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Müller</title> <meta name="description" content="Search results for: Johannes Müller"> <meta name="keywords" content="Johannes Müller"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Johannes Müller" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Johannes Müller"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 135</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Johannes Müller</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">75</span> Genomic Sequence Representation Learning: An Analysis of K-Mer Vector Embedding Dimensionality</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=James%20Jr.%20Mashiyane">James Jr. Mashiyane</a>, <a href="https://publications.waset.org/abstracts/search?q=Risuna%20Nkolele"> Risuna Nkolele</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephanie%20J.%20M%C3%BCller"> Stephanie J. Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=Gciniwe%20S.%20Dlamini"> Gciniwe S. Dlamini</a>, <a href="https://publications.waset.org/abstracts/search?q=Rebone%20L.%20Meraba"> Rebone L. Meraba</a>, <a href="https://publications.waset.org/abstracts/search?q=Darlington%20S.%20Mapiye"> Darlington S. Mapiye</a> </p> <p class="card-text"><strong>Abstract:</strong></p> When performing language tasks in natural language processing (NLP), the dimensionality of word embeddings is chosen either ad-hoc or is calculated by optimizing the Pairwise Inner Product (PIP) loss. The PIP loss is a metric that measures the dissimilarity between word embeddings, and it is obtained through matrix perturbation theory by utilizing the unitary invariance of word embeddings. Unlike in natural language, in genomics, especially in genome sequence processing, unlike in natural language processing, there is no notion of a “word,” but rather, there are sequence substrings of length k called k-mers. K-mers sizes matter, and they vary depending on the goal of the task at hand. The dimensionality of word embeddings in NLP has been studied using the matrix perturbation theory and the PIP loss. In this paper, the sufficiency and reliability of applying word-embedding algorithms to various genomic sequence datasets are investigated to understand the relationship between the k-mer size and their embedding dimension. This is completed by studying the scaling capability of three embedding algorithms, namely Latent Semantic analysis (LSA), Word2Vec, and Global Vectors (GloVe), with respect to the k-mer size. Utilising the PIP loss as a metric to train embeddings on different datasets, we also show that Word2Vec outperforms LSA and GloVe in accurate computing embeddings as both the k-mer size and vocabulary increase. Finally, the shortcomings of natural language processing embedding algorithms in performing genomic tasks are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=word%20embeddings" title="word embeddings">word embeddings</a>, <a href="https://publications.waset.org/abstracts/search?q=k-mer%20embedding" title=" k-mer embedding"> k-mer embedding</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensionality%0D%0Areduction" title=" dimensionality reduction"> dimensionality reduction</a> </p> <a href="https://publications.waset.org/abstracts/151370/genomic-sequence-representation-learning-an-analysis-of-k-mer-vector-embedding-dimensionality" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151370.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">138</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">74</span> Mapping Thermal Properties Using Resistivity, Lithology and Thermal Conductivity Measurements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Riccardo%20Pasquali">Riccardo Pasquali</a>, <a href="https://publications.waset.org/abstracts/search?q=Keith%20Harlin"> Keith Harlin</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20Muller"> Mark Muller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ShallowTherm project is focussed on developing and applying a methodology for extrapolating relatively sparsely sampled thermal conductivity measurements across Ireland using mapped Litho-Electrical (LE) units. The primary data used consist of electrical resistivities derived from the Geological Survey Ireland Tellus airborne electromagnetic dataset, GIS-based maps of Irish geology, and rock thermal conductivities derived from both the current Irish Ground Thermal Properties (IGTP) database and a new programme of sampling and laboratory measurement. The workflow has been developed across three case-study areas that sample a range of different calcareous, arenaceous, argillaceous, and volcanic lithologies. Statistical analysis of resistivity data from individual geological formations has been assessed and integrated with detailed lithological descriptions to define distinct LE units. Thermal conductivity measurements from core and hand samples have been acquired for every geological formation within each study area. The variability and consistency of thermal conductivity measurements within each LE unit is examined with the aim of defining a characteristic thermal conductivity (or range of thermal conductivities) for each LE unit. Mapping of LE units, coupled with characteristic thermal conductivities, provides a method of defining thermal conductivity properties at a regional scale and facilitating the design of ground source heat pump closed-loop collectors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermal%20conductivity" title="thermal conductivity">thermal conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=ground%20source%20heat%20pumps" title=" ground source heat pumps"> ground source heat pumps</a>, <a href="https://publications.waset.org/abstracts/search?q=resistivity" title=" resistivity"> resistivity</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20exchange" title=" heat exchange"> heat exchange</a>, <a href="https://publications.waset.org/abstracts/search?q=shallow%20geothermal" title=" shallow geothermal"> shallow geothermal</a>, <a href="https://publications.waset.org/abstracts/search?q=Ireland" title=" Ireland"> Ireland</a> </p> <a href="https://publications.waset.org/abstracts/130116/mapping-thermal-properties-using-resistivity-lithology-and-thermal-conductivity-measurements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130116.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">182</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">73</span> Work in the Industry of the Future-Investigations of Human-Machine Interactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Schr%C3%B6der">S. Schröder</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Ennen"> P. Ennen</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Langer"> T. Langer</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20M%C3%BCller"> S. Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Shehadeh"> M. Shehadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Haberstroh"> M. Haberstroh</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hees"> F. Hees</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since a bit over a year ago, Festo AG and Co. KG, Festo Didactic SE, robomotion GmbH, the researchers of the Cybernetics-Lab IMA/ZLW and IfU, as well as the Human-Computer Interaction Center at the RWTH Aachen University, have been working together in the focal point of assembly competences to realize different scenarios in the field of human-machine interaction (HMI). In the framework of project ARIZ, questions concerning the future of production within the fourth industrial revolution are dealt with. There are many perspectives of human-robot collaboration that consist Industry 4.0 on an individual, organization and enterprise level, and these will be addressed in ARIZ. The aim of the ARIZ projects is to link AI-Approaches to assembly problems and to implement them as prototypes in demonstrators. To do so, island and flow based production scenarios will be simulated and realized as prototypes. These prototypes will serve as applications of flexible robotics as well as AI-based planning and control of production process. Using the demonstrators, human interaction strategies will be examined with an information system on one hand, and a robotic system on the other. During the tests, prototypes of workspaces that illustrate prospective production work forms will be represented. The human being will remain a central element in future productions and will increasingly be in charge of managerial tasks. Questions thus arise within the overall perspective, primarily concerning the role of humans within these technological revolutions, as well as their ability to act and design respectively to the acceptance of such systems. Roles, such as the 'Trainer' of intelligent systems may become a possibility in such assembly scenarios. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=human-machine%20interaction" title="human-machine interaction">human-machine interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20technology" title=" information technology"> information technology</a>, <a href="https://publications.waset.org/abstracts/search?q=island%20based%20production" title=" island based production"> island based production</a>, <a href="https://publications.waset.org/abstracts/search?q=assembly%20competences" title=" assembly competences"> assembly competences</a> </p> <a href="https://publications.waset.org/abstracts/86239/work-in-the-industry-of-the-future-investigations-of-human-machine-interactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86239.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">206</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">72</span> Influence of Low and Extreme Heat Fluxes on Thermal Degradation of Carbon Fibre-Reinforced Polymers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Bibinger">Johannes Bibinger</a>, <a href="https://publications.waset.org/abstracts/search?q=Sebastian%20Eibl"> Sebastian Eibl</a>, <a href="https://publications.waset.org/abstracts/search?q=Hans-Joachim%20Gudladt"> Hans-Joachim Gudladt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study considers the influence of different irradiation scenarios on the thermal degradation of carbon fiber-reinforced polymers (CFRP). Real threats are simulated, such as fires with long-lasting low heat fluxes and nuclear heat flashes with short-lasting high heat fluxes. For this purpose, coated and uncoated quasi-isotropic samples of the commercially available CFRP HexPly® 8552/IM7 are thermally irradiated from one side by a cone calorimeter and a xenon short-arc lamp with heat fluxes between 5 and 175 W/cm² at varying time intervals. The specimen temperature is recorded on the front and backside as well as at different laminate depths. The CFRP is non-destructively tested with ultrasonic testing, infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), and micro-focused computed X-Ray tomography (μCT). Destructive tests are performed to evaluate the mechanical properties in terms of interlaminar shear strength (ILSS), compressive and tensile strength. The irradiation scenarios vary significantly in heat flux and exposure time. Thus, different heating rates, radiation effects, and temperature distributions occur. This leads to unequal decomposition processes, which affect the sensitivity of the strength type and damage behaviour of the specimens. However, with the use of surface coatings, thermal degradation of composite materials can be delayed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFRP" title="CFRP">CFRP</a>, <a href="https://publications.waset.org/abstracts/search?q=one-sided%20thermal%20damage" title=" one-sided thermal damage"> one-sided thermal damage</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20heat%20flux" title=" high heat flux"> high heat flux</a>, <a href="https://publications.waset.org/abstracts/search?q=heating%20rate" title=" heating rate"> heating rate</a>, <a href="https://publications.waset.org/abstracts/search?q=non-destructive%20and%20destructive%20testing" title=" non-destructive and destructive testing"> non-destructive and destructive testing</a> </p> <a href="https://publications.waset.org/abstracts/134738/influence-of-low-and-extreme-heat-fluxes-on-thermal-degradation-of-carbon-fibre-reinforced-polymers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134738.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">112</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">71</span> Quantification Model for Capability Evaluation of Optical-Based in-Situ Monitoring System for Laser Powder Bed Fusion (LPBF) Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Song%20Zhang">Song Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hui%20Wang"> Hui Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Henrich%20Schleifenbaum"> Johannes Henrich Schleifenbaum</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Due to the increasing demand for quality assurance and reliability for additive manufacturing, the development of an advanced in-situ monitoring system is required to monitor the process anomalies as input for further process control. Optical-based monitoring systems, such as CMOS cameras and NIR cameras, are proved as effective ways to monitor the geometrical distortion and exceptional thermal distribution. Therefore, many studies and applications are focusing on the availability of the optical-based monitoring system for detecting varied types of defects. However, the capability of the monitoring setup is not quantified. In this study, a quantification model to evaluate the capability of the monitoring setups for the LPBF machine based on acquired monitoring data of a designed test artifact is presented, while the design of the relevant test artifacts is discussed. The monitoring setup is evaluated based on its hardware properties, location of the integration, and light condition. Methodology of data processing to quantify the capacity for each aspect is discussed. The minimal capability of the detectable size of the monitoring set up in the application is estimated by quantifying its resolution and accuracy. The quantification model is validated using a CCD camera-based monitoring system for LPBF machines in the laboratory with different setups. The result shows the model to quantify the monitoring system's performance, which makes the evaluation of monitoring systems with the same concept but different setups possible for the LPBF process and provides the direction to improve the setups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=data%20processing" title="data processing">data processing</a>, <a href="https://publications.waset.org/abstracts/search?q=in-situ%20monitoring" title=" in-situ monitoring"> in-situ monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=LPBF%20process" title=" LPBF process"> LPBF process</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20system" title=" optical system"> optical system</a>, <a href="https://publications.waset.org/abstracts/search?q=quantization%20model" title=" quantization model"> quantization model</a>, <a href="https://publications.waset.org/abstracts/search?q=test%20artifact" title=" test artifact"> test artifact</a> </p> <a href="https://publications.waset.org/abstracts/139140/quantification-model-for-capability-evaluation-of-optical-based-in-situ-monitoring-system-for-laser-powder-bed-fusion-lpbf-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/139140.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">197</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">70</span> Immobilized Iron Oxide Nanoparticles for Stem Cell Reconstruction in Magnetic Particle Imaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kolja%20Them">Kolja Them</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Salamon"> Johannes Salamon</a>, <a href="https://publications.waset.org/abstracts/search?q=Harald%20Ittrich"> Harald Ittrich</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Kaul"> Michael Kaul</a>, <a href="https://publications.waset.org/abstracts/search?q=Tobias%20Knopp"> Tobias Knopp</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Superparamagnetic iron oxide nanoparticles (SPIONs) are nanoscale magnets which can be biologically functionalized for biomedical applications. Stem cell therapies to repair damaged tissue, magnetic fluid hyperthermia for cancer therapy and targeted drug delivery based on SPIONs are prominent examples where the visualization of a preferably low concentrated SPION distribution is essential. In 2005 a new method for tomographic SPION imaging has been introduced. The method named magnetic particle imaging (MPI) takes advantage of the nanoparticles magnetization change caused by an oscillating, external magnetic field and allows to directly image the time-dependent nanoparticle distribution. The SPION magnetization can be changed by the electron spin dynamics as well as by a mechanical rotation of the nanoparticle. In this work different calibration methods in MPI are investigated for image reconstruction of magnetically labeled stem cells. It is shown that a calibration using rotationally immobilized SPIONs provides a higher quality of stem cell images with fewer artifacts than a calibration using mobile SPIONs. The enhancement of the image quality and the reduction of artifacts enables the localization and identification of a smaller number of magnetically labeled stem cells. This is important for future medical applications where low concentrations of functionalized SPIONs interacting with biological matter have to be localized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomedical%20imaging" title="biomedical imaging">biomedical imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=iron%20oxide%20nanoparticles" title=" iron oxide nanoparticles"> iron oxide nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20particle%20imaging" title=" magnetic particle imaging"> magnetic particle imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=stem%20cell%20imaging" title=" stem cell imaging"> stem cell imaging</a> </p> <a href="https://publications.waset.org/abstracts/35704/immobilized-iron-oxide-nanoparticles-for-stem-cell-reconstruction-in-magnetic-particle-imaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35704.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">464</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">69</span> Endangered Languages in Arabia: Documentation Challenges</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Munira%20Al-Azraqi">Munira Al-Azraqi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modern South Arabian Languages (MSAL) belong to the Semitic language family and are believed to be either a southern member of the west Semitic branch (Rubin 2010; Moscati et al 1969) or an eastern member of the south Semitic branch (Faber 1997), (Watson 2012). They are six languages which are still spoken in southern Arabia. They are used in Oman, Yemen, Saudi Arabia and in some of the Gulf states. Mehri is one of them however it has the highest number of speakers comparing to the other members of MSAL. It is used in Yemen, Oman, in parts of southern and eastern Saudi Arabia and in some of the Gulf states. The number of Mehri speakers is estimated at between 100,000 and 180,000. The problem that this language might face is that its speakers live in different places which are belonging to different countries. This might cause the language to change rapidly due to education and communication. There are some studies on Omani and Yemeni Mehri but not in Saudi Mehri. In the nineteenth century, travelers, western scholars and explorers played their parts in the discovery of these peoples and their languages. The historical turning point for the knowledge of the MSAL is 1898, when the Südarabische Expedition of the Imperial Academy of Vienna started. The three scholars, Müller, Jahn and Hein began their systematic collection of texts, which were later studied grammatically and lexically by Bittner (1908-1917), Jahn (1915), Leslau (1938) and Wagner (1953). Saudi Mehri has not been studied. This might be caused by the lack of information or the difficulty in collecting the data which this paper aims to shed light on. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Modern%20South%20Arabian" title="Modern South Arabian">Modern South Arabian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehri" title=" Mehri"> Mehri</a>, <a href="https://publications.waset.org/abstracts/search?q=Saudi%20Arabia" title=" Saudi Arabia"> Saudi Arabia</a>, <a href="https://publications.waset.org/abstracts/search?q=endangered%20languages" title=" endangered languages "> endangered languages </a> </p> <a href="https://publications.waset.org/abstracts/16652/endangered-languages-in-arabia-documentation-challenges" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16652.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">522</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">68</span> Scientific Production on Lean Supply Chains Published in Journals Indexed by SCOPUS and Web of Science Databases: A Bibliometric Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Botelho%20de%20Sousa">T. Botelho de Sousa</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Raphael%20Cabral%20Furtado"> F. Raphael Cabral Furtado</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Eduardo%20da%20Silva%20Ferri"> O. Eduardo da Silva Ferri</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Batista"> A. Batista</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Augusto%20Varella"> W. Augusto Varella</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Eduardo%20Pinto"> C. Eduardo Pinto</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Mimar%20Santa%20Cruz%20Yabarrena"> J. Mimar Santa Cruz Yabarrena</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Gibran%20Ruwer"> S. Gibran Ruwer</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20M%C3%BCller%20Guerrini"> F. Müller Guerrini</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Adalberto%20Philippsen%20J%C3%BAnior"> L. Adalberto Philippsen Júnior</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lean Supply Chain Management (LSCM) is an emerging research field in Operations Management (OM). As a strategic model that focuses on reduced cost and waste with fulfilling the needs of customers, LSCM attracts great interest among researchers and practitioners. The purpose of this paper is to present an overview of Lean Supply Chains literature, based on bibliometric analysis through 57 papers published in indexed journals by SCOPUS and/or Web of Science databases. The results indicate that the last three years (2015, 2016, and 2017) were the most productive on LSCM discussion, especially in Supply Chain Management and International Journal of Lean Six Sigma journals. India, USA, and UK are the most productive countries; nevertheless, cross-country studies by collaboration among researchers were detected, by social network analysis, as a research practice, appearing to play a more important role on LSCM studies. Despite existing limitation, such as limited indexed journal database, bibliometric analysis helps to enlighten ongoing efforts on LSCM researches, including most used technical procedures and collaboration network, showing important research gaps, especially, for development countries researchers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lean%20Supply%20Chains" title="Lean Supply Chains">Lean Supply Chains</a>, <a href="https://publications.waset.org/abstracts/search?q=Bibliometric%20Study" title=" Bibliometric Study"> Bibliometric Study</a>, <a href="https://publications.waset.org/abstracts/search?q=SCOPUS" title=" SCOPUS"> SCOPUS</a>, <a href="https://publications.waset.org/abstracts/search?q=Web%20of%20Science" title=" Web of Science"> Web of Science</a> </p> <a href="https://publications.waset.org/abstracts/94811/scientific-production-on-lean-supply-chains-published-in-journals-indexed-by-scopus-and-web-of-science-databases-a-bibliometric-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94811.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">347</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">67</span> Comparison of the Curvizigzag Incision with Transverse Stewart Incision in Women Undergoing Modified Radical Mastectomy for Carcinoma Breast</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John%20Joseph%20S.%20Martis">John Joseph S. Martis</a>, <a href="https://publications.waset.org/abstracts/search?q=Rohanchandra%20R.%20Gatty"> Rohanchandra R. Gatty</a>, <a href="https://publications.waset.org/abstracts/search?q=Aaron%20Jose%20Fernandes"> Aaron Jose Fernandes</a>, <a href="https://publications.waset.org/abstracts/search?q=Rahul%20P.%20Nambiar"> Rahul P. Nambiar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Surgery for breast cancer is either mastectomy or breast conservation surgery. The most commonly used incision for modified radical mastectomy is the transverse Stewart incision. But this incision may have the disadvantage of causing disparity between the closure lines of superior and inferior skin flaps in mastectomy and can cause overhanging of soft tissue below and behind the axilla. The curvizigzag incision, on principle, may help in this regard and can prevent scar migration beyond the anterior axillary line. This study aims to compare the two incisions in this regard. Methods: 100 patients with cancer of breast were included in the study after satisfying inclusion and exclusion criteria. They underwent surgery at Father Muller Medical College, Mangalore, India, between November 2019 to September 2021. The patients were divided into two groups. Group A patients were subjected to modified radical mastectomy with curvizigzag incision and group B patients with transverse Stewart incision. Results: Seroma on postoperative day1, day 2 was 0% in both the groups. Seroma on postoperative day 30 was present in 14% of patients in group B. 60% of patients in group B had sag of soft tissue below and behind the axilla, and none of the patients in group A had this problem. In 64% of the patients in group B, the incision crossed the anterior axillary fold, 64% of the patients in group B had tension in the incision site while approximation of the skin flaps. Conclusion: Curvizigzag incision is statistically better with lesser complications when compared to the transverse Stewart incision for modified radical mastectomy for carcinoma breast. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title="breast cancer">breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=curvizigzag%20incision" title=" curvizigzag incision"> curvizigzag incision</a>, <a href="https://publications.waset.org/abstracts/search?q=transverse%20Stewart%20incision" title=" transverse Stewart incision"> transverse Stewart incision</a>, <a href="https://publications.waset.org/abstracts/search?q=seroma" title=" seroma"> seroma</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20radical%20mastectomy" title=" modified radical mastectomy"> modified radical mastectomy</a> </p> <a href="https://publications.waset.org/abstracts/153834/comparison-of-the-curvizigzag-incision-with-transverse-stewart-incision-in-women-undergoing-modified-radical-mastectomy-for-carcinoma-breast" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153834.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">66</span> Social Media Idea Ontology: A Concept for Semantic Search of Product Ideas in Customer Knowledge through User-Centered Metrics and Natural Language Processing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Martin%20H%C2%A8ausl">Martin H¨ausl</a>, <a href="https://publications.waset.org/abstracts/search?q=Maximilian%20Auch"> Maximilian Auch</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Forster"> Johannes Forster</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Mandl"> Peter Mandl</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Schill"> Alexander Schill</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to survive on the market, companies must constantly develop improved and new products. These products are designed to serve the needs of their customers in the best possible way. The creation of new products is also called innovation and is primarily driven by a company’s internal research and development department. However, a new approach has been taking place for some years now, involving external knowledge in the innovation process. This approach is called open innovation and identifies customer knowledge as the most important source in the innovation process. This paper presents a concept of using social media posts as an external source to support the open innovation approach in its initial phase, the Ideation phase. For this purpose, the social media posts are semantically structured with the help of an ontology and the authors are evaluated using graph-theoretical metrics such as density. For the structuring and evaluation of relevant social media posts, we also use the findings of Natural Language Processing, e. g. Named Entity Recognition, specific dictionaries, Triple Tagger and Part-of-Speech-Tagger. The selection and evaluation of the tools used are discussed in this paper. Using our ontology and metrics to structure social media posts enables users to semantically search these posts for new product ideas and thus gain an improved insight into the external sources such as customer needs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=idea%20ontology" title="idea ontology">idea ontology</a>, <a href="https://publications.waset.org/abstracts/search?q=innovation%20management" title=" innovation management"> innovation management</a>, <a href="https://publications.waset.org/abstracts/search?q=semantic%20search" title=" semantic search"> semantic search</a>, <a href="https://publications.waset.org/abstracts/search?q=open%20information%20extraction" title=" open information extraction"> open information extraction</a> </p> <a href="https://publications.waset.org/abstracts/71424/social-media-idea-ontology-a-concept-for-semantic-search-of-product-ideas-in-customer-knowledge-through-user-centered-metrics-and-natural-language-processing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71424.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">188</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">65</span> Approach to Establish Logistics as a Central Scientific Discipline of Tomorrow's Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Dregger">Johannes Dregger</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Schmidt"> Michael Schmidt</a>, <a href="https://publications.waset.org/abstracts/search?q=Christian%20Prasse"> Christian Prasse</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20ten%20Hompel"> Michael ten Hompel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most of the today’s companies face increasing need to operate efficiently. Driven by global trends like shorter product cycles, mass customization and the rising speed of delivery, manufacturing value chains are becoming more and more distributed. Manufacturing processes are becoming highly integrated, e.g. 3D printing. All these changes are affecting companies´ organization. They are leading towards individual, small scale, and ad-hoc logistics processes and structures, and finally, towards a significant increase in the importance of logistics itself since traditional value chains transform into agile value networks. In the past logistics has been following manufacturing but in the future industry, this role allocation might change. With this increase in the logistics practice of companies and businesses, the relevance of logistics research as the methodological foundation of logistics networks and processes is gaining importance. Logistics research is evolving into a central and highly interdisciplinary science for the future industry. Using the example of Germany, this paper discusses ways to establish logistics as a central scientific discipline of the future industry. About three million people work in the logistics sector in Germany. Only automotive and retail industry have more employees. Even though there is a bunch of logistics degree programs at more than 100 institutions of higher education, a common understanding of logistics as a research discipline is missing. In this paper an innovative approach will be presented, including; identified perspectives on logistics, such as process orientation, IT orientation or employees orientation, relevant scientific disciplines for logistics science, a concept for interdisciplinary research approaches to unify the perspectives of the different scientific disciplines on logistics and the methodological base of logistics science. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=logistics" title="logistics">logistics</a>, <a href="https://publications.waset.org/abstracts/search?q=logistics%20science" title=" logistics science"> logistics science</a>, <a href="https://publications.waset.org/abstracts/search?q=logistics%20management" title=" logistics management"> logistics management</a>, <a href="https://publications.waset.org/abstracts/search?q=future%20challenges" title=" future challenges"> future challenges</a> </p> <a href="https://publications.waset.org/abstracts/76058/approach-to-establish-logistics-as-a-central-scientific-discipline-of-tomorrows-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76058.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">314</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">64</span> Using Songs as Direct and Indirect Vehicles of Peace</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Van%20Der%20Sandt">Johannes Van Der Sandt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper explores and reflects on the power of music, and more specific singing as an instrument for integration, inclusion, group cohesion, collective cooperation, repairing social relationships and facilitating dialogue between groups in conflict. The General Assembly of the United Nations has declared the 21st of September as International Day of Peace. This day is dedicated to advocate and strengthen among all people, an annual day to strive for no violence and cease-fire. What role does music play in strengthening ideals of peace? The findings of this paper is a result of field and online research as well as a literature survey to identify the most important examples of institutions, instruments or initiatives where music serves as a vehicle for the transmission and promoting of peace ideals and acting to assist movements for social change. Important examples where singing and music were used as tools for peace activism are the 1987 Estonian Singing Revolution and the more recent peace engagement in the Afghan Conflict, both very good examples of the cultural capital of the local population used as catalyst for promoting peace. The author offers a concise and relevant overview of such initiatives with the aim to validate the power of music and song as tools to support the United Nation’s Declaration on the Promotion Among Youth of the Ideals of Peace, Mutual Respect and Understanding Between Peoples: Young people should be educated and made aware of the ideals of peace. They should be educated in a spirit of mutual understanding and respect for one another in order to develop an attitude of striving for equal rights for all human beings, believing in economic and social growth for all, together with a belief in disarmament and working towards the maintenance of peace and security worldwide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conflict" title="conflict">conflict</a>, <a href="https://publications.waset.org/abstracts/search?q=music" title=" music"> music</a>, <a href="https://publications.waset.org/abstracts/search?q=peace" title=" peace"> peace</a>, <a href="https://publications.waset.org/abstracts/search?q=singing" title=" singing"> singing</a> </p> <a href="https://publications.waset.org/abstracts/60291/using-songs-as-direct-and-indirect-vehicles-of-peace" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60291.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">280</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Development and Characterization of Ceramic-Filled Composite Filaments and Functional Structures for Fused Deposition Modeling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Khatri">B. Khatri</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Lappe"> K. Lappe</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Habedank"> M. Habedank</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20M%C3%BCller"> T. Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Megnin"> C. Megnin</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Hanemann"> T. Hanemann</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present a process flow for the development of ceramic-filled polymer composite filaments compatible with the fused deposition modeling (FDM) 3D printing process. Thermoplastic-ceramic composites were developed using acrylonitrile butadiene styrene (ABS) and 10- and 20 vol.% barium titanate (BaTiO3) powder (corresponding to 39.47- and 58.23 wt.% respectively) and characterized for their flow properties. To make them compatible with the existing FDM process, the composites were extruded into filaments. These composite filaments were subsequently structured into tensile stress specimens using a commercially available FDM 3D printer and characterized for their mechanical properties. Rheometric characterization of the material composites revealed non-Newtonian behavior with the viscosity logarithmically decreasing over increasing shear rates, as well as higher viscosities for samples with higher BaTiO3 filler content for a given shear rate (with the ABS+20vol.% BaTiO3 composite being over 50% more viscous compared to pure ABS at a shear rate of 1x〖10〗^3 s^(-1)). Mechanical characterization of the tensile stress specimens exhibited increasingly brittle behavior as well as a linearly decreasing ultimate tensile strength of the material composites with increasing volumetric ratio of BaTiO3 (from σ_max=32.4MPa for pure ABS to σ_max=21.3MPa for ABS+20vol.% BaTiO3). Further studies being undertaken include the development of composites with higher filler concentrations, sintering of the printed composites to yield pure dielectric structures and the determination of the dielectric characteristics of the composites. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ceramic%20composites" title="ceramic composites">ceramic composites</a>, <a href="https://publications.waset.org/abstracts/search?q=fused%20deposition%20modeling" title=" fused deposition modeling"> fused deposition modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20characterization" title=" material characterization"> material characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=rapid%20prototyping" title=" rapid prototyping"> rapid prototyping</a> </p> <a href="https://publications.waset.org/abstracts/41082/development-and-characterization-of-ceramic-filled-composite-filaments-and-functional-structures-for-fused-deposition-modeling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41082.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">331</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">62</span> Molecular Insights into the Genetic Integrity of Long-Term Micropropagated Clones Using Start Codon Targeted (SCoT) Markers: A Case Study with Ansellia africana, an Endangered, Medicinal Orchid</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Paromik%20Bhattacharyya">Paromik Bhattacharyya</a>, <a href="https://publications.waset.org/abstracts/search?q=Vijay%20Kumar"> Vijay Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Van%20Staden"> Johannes Van Staden</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Micropropagation is an important tool for the conservation of threatened and commercially important plant species of which orchids deserve special attention. Ansellia africana is one such medicinally important orchid species having much commercial significance. Thus, development of regeneration protocols for producing clonally stable regenerates using axillary buds is of much importance. However, for large-scale micropropagation to become not only successful but also acceptable by end-users, somaclonal variations occurring in the plantlets need to be eliminated. In the light of the various factors (genotype, ploidy level, in vitro culture age, explant and culture type, etc.) that may account for the somaclonal variations of divergent genetic changes at the cellular and molecular levels, genetic analysis of micropropagated plants using a multidisciplinary approach is of utmost importance. In the present study, the clonal integrity of the long term micropropagated A. africana plants were assessed using advanced molecular marker system i.e. Start Codon Targeted Polymorphism (SCoT). Our studies recorded a clonally stable regeneration protocol for A. africana with a very high degree of clonal fidelity amongst the regenerates. The results obtained from these molecular analyses could help in modifying the regeneration protocols for obtaining clonally stable true to type plantlets for sustainable commercial use. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medicinal%20orchid%20micropropagation" title="medicinal orchid micropropagation">medicinal orchid micropropagation</a>, <a href="https://publications.waset.org/abstracts/search?q=start%20codon%20targeted%20polymorphism%20%28SCoT%29" title=" start codon targeted polymorphism (SCoT)"> start codon targeted polymorphism (SCoT)</a>, <a href="https://publications.waset.org/abstracts/search?q=RAP%29" title="RAP)">RAP)</a>, <a href="https://publications.waset.org/abstracts/search?q=traditional%20African%20pharmacopoeia" title=" traditional African pharmacopoeia"> traditional African pharmacopoeia</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20%20fidelity" title=" genetic fidelity"> genetic fidelity</a> </p> <a href="https://publications.waset.org/abstracts/53547/molecular-insights-into-the-genetic-integrity-of-long-term-micropropagated-clones-using-start-codon-targeted-scot-markers-a-case-study-with-ansellia-africana-an-endangered-medicinal-orchid" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53547.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">426</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">61</span> Retrospective Evaluation of Vector-borne Infections in Cats Living in Germany (2012-2019)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Sch%C3%A4fer">I. Schäfer</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Kohn"> B. Kohn</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Volkmann"> M. Volkmann</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20M%C3%BCller"> E. Müller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Blood-feeding arthropods transmit parasitic, bacterial, or viral pathogens to domestic animals and wildlife. Vector-borne infections are gaining significance due to the increase of travel, import of domestic animals from abroad, and the changing climate in Europe. Aims of the study: The main objective of this retrospective study was to assess the prevalence of vector-borne infections in cats in which a ‘Feline Travel Profile’ had been conducted. Material and Methods: This retrospective study included test results from cats for which a ‘Feline Travel Profile’ established by LABOKLIN had been requested by veterinarians between April 2012 and December 2019. This profile contains direct detection methods via polymerase chain reaction (PCR) for Hepatozoon spp. and Dirofilaria spp. as well as indirect detection methods via immunofluorescence antibody test (IFAT) for Ehrlichia spp. and Leishmania spp. This profile was expanded to include an IFAT for Rickettsia spp. from July 2015 onwards. The prevalence of the different vector-borne infectious agents was calculated. Results: A total of 602 cats were tested using the ‘Feline Travel Profile’. Positive test results were as follows: Rickettsia spp. IFAT 54/442 (12.2%), Ehrlichia spp. IFAT 68/602 (11.3%), Leishmania spp. IFAT 21/602 (3.5%), Hepatozoon spp. PCR 51/595 (8.6%), and Dirofilaria spp. PCR 1/595 cats (0.2%). Co-infections with more than one pathogen could be detected in 22/602 cats. Conclusions: 170/602 cats (28.2%) were tested positive for at least one vector-borne pathogen. Infections with multiple pathogens could be detected in 3.7% of the cats. The data emphasizes the importance of considering vector-borne infections as potential differential diagnoses in cats. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=arthopod-transmitted%20infections" title="arthopod-transmitted infections">arthopod-transmitted infections</a>, <a href="https://publications.waset.org/abstracts/search?q=feline%20vector-borne%20infections" title=" feline vector-borne infections"> feline vector-borne infections</a>, <a href="https://publications.waset.org/abstracts/search?q=Germany" title=" Germany"> Germany</a>, <a href="https://publications.waset.org/abstracts/search?q=laboratory%20diagnostics" title=" laboratory diagnostics"> laboratory diagnostics</a> </p> <a href="https://publications.waset.org/abstracts/126367/retrospective-evaluation-of-vector-borne-infections-in-cats-living-in-germany-2012-2019" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/126367.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">166</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">60</span> Numerical Investigation of the Needle Opening Process in a High Pressure Gas Injector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matthias%20Banholzer">Matthias Banholzer</a>, <a href="https://publications.waset.org/abstracts/search?q=Hagen%20M%C3%BCller"> Hagen Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Pfitzner"> Michael Pfitzner</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gas internal combustion engines are widely used as propulsion systems or in power plants to generate heat and electricity. While there are different types of injection methods including the manifold port fuel injection and the direct injection, the latter has more potential to increase the specific power by avoiding air displacement in the intake and to reduce combustion anomalies such as backfire or pre-ignition. During the opening process of the injector, multiple flow regimes occur: subsonic, transonic and supersonic. To cover the wide range of Mach numbers a compressible pressure-based solver is used. While the standard Pressure Implicit with Splitting of Operators (PISO) method is used for the coupling between velocity and pressure, a high-resolution non-oscillatory central scheme established by Kurganov and Tadmor calculates the convective fluxes. A blending function based on the local Mach- and CFL-number switches between the compressible and incompressible regimes of the developed model. As the considered operating points are well above the critical state of the used fluids, the ideal gas assumption is not valid anymore. For the real gas thermodynamics, the models based on the Soave-Redlich-Kwong equation of state were implemented. The caloric properties are corrected using a departure formalism, for the viscosity and the thermal conductivity the empirical correlation of Chung is used. For the injector geometry, the dimensions of a diesel injector were adapted. Simulations were performed using different nozzle and needle geometries and opening curves. It can be clearly seen that there is a significant influence of all three parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high%20pressure%20gas%20injection" title="high pressure gas injection">high pressure gas injection</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20solver" title=" hybrid solver"> hybrid solver</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20injection" title=" hydrogen injection"> hydrogen injection</a>, <a href="https://publications.waset.org/abstracts/search?q=needle%20opening%20process" title=" needle opening process"> needle opening process</a>, <a href="https://publications.waset.org/abstracts/search?q=real-gas%20thermodynamics" title=" real-gas thermodynamics"> real-gas thermodynamics</a> </p> <a href="https://publications.waset.org/abstracts/70970/numerical-investigation-of-the-needle-opening-process-in-a-high-pressure-gas-injector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70970.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">461</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Subjective Mapping Methodologies: Mapping Local Perceptions with Geographic Information Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Llopis%20Alvarez">A. Llopis Alvarez</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Muller-Eie"> D. Muller-Eie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Participatory GIS (geographic information systems) are designed for community mapping exercises in order to produce spatial representations of local knowledge. Ideally, participatory GIS caters to public participation through the use of spatial data in order to increase community-led policy-and decision-making. Having defined a spatial object, such as a neighborhood, subjective mapping involves attaining a description of the spatial, physical, social and psychological characteristics of that spatial object. This paper highlights an emerging appreciation of the subjective component, particularly in spatial analyses. The beliefs, feelings, and behaviors associated with an urban area reflect its sense of place for an individual or a group. It is important therefore to understand what types of beliefs, emotions, and behavioral patterns are relevant to particular resident, groups and urban scales. In this sense, resident’s emotional attachment to their urban areas motivates civic engagement and facilitates awareness of its strengths and its problems. Similarly, subjective perceptions act in complex ways to influence the formation and maintenance of social identity and quality of life. This paper reports on findings from a case study of immigrant population in Norwegian cities, their residential conditions and their relationship to quality of urban life. Cognitive mapping methodologies are used in this study to understand local perceptions of urban qualities. Thus, measures to alleviate disadvantages and improve quality of urban life are more likely to be effective when they are informed by an understanding of a place as constructed by those who live in it, meaning their subjective perceptions about it. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mapping%20methodologies" title="mapping methodologies">mapping methodologies</a>, <a href="https://publications.waset.org/abstracts/search?q=participatory%20GIS" title=" participatory GIS"> participatory GIS</a>, <a href="https://publications.waset.org/abstracts/search?q=perceptual%20maps" title=" perceptual maps"> perceptual maps</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20participation" title=" public participation"> public participation</a>, <a href="https://publications.waset.org/abstracts/search?q=spatial%20analysis" title=" spatial analysis"> spatial analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=subjective%20perceptions" title=" subjective perceptions"> subjective perceptions</a> </p> <a href="https://publications.waset.org/abstracts/90939/subjective-mapping-methodologies-mapping-local-perceptions-with-geographic-information-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90939.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Transport Medium That Prevents the Conversion of Helicobacter Pylori to the Coccoid Form</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eldar%20Mammadov">Eldar Mammadov</a>, <a href="https://publications.waset.org/abstracts/search?q=Konul%20Mammadova"> Konul Mammadova</a>, <a href="https://publications.waset.org/abstracts/search?q=Aytaj%20Ilyaszada"> Aytaj Ilyaszada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: According to many studies, it is known that H. pylori transform into the coccoid form, which cannot be cultured and has poor metabolic activity.In this study, we succeeded in preserving the spiral shape of H.pylori for a long time by preparing a biphase transport medium with a hard bottom (Muller Hinton with 7% HRBC (horse red blood cells) agar 5ml) and liquid top part (BH (brain heart) broth + HS (horse serum)+7% HRBC+antibiotics (Vancomycin 5 mg, Trimethoprim lactate 25 mg, Polymyxin B 1250 I.U.)) in cell culture flasks with filter caps. For comparison, we also used a BH broth medium with 7% HRBC used for the transport of H.pylori. Methods: Rapid urease test positive 7 biopsy specimens were also inoculated into biphasic and BH broth medium with 7% HRBC, then put in CO2 Gaspak packages and sent to the laboratory. Then both mediums were kept in the thermostat at 37 °C for 1 day. After microscopic, PCR and urease test diagnosis, they were transferred to Columbia Agar with 7% HRBC. Incubated at 37°C for 5-7 days, cultures were examined for colony characteristics and bacterial morphology. E-test antimicrobial susceptibility test was performed. Results: There were 3 growths from biphasic transport medium passed to Columbia agar with 7% HRBC and only 1 growth from BH broth medium with 7% HRBC. It was also observed that after the first 3 days in BH broth medium with 7%, H.pylori passed into coccoid form and its biochemical activity weakened, while its spiral shape did not change for 2-3 weeks in the biphase transport medium. Conclusions: By using the biphase transport medium we have prepared; we can culture the bacterium by preventing H.pylori from spiraling into the coccoid form. In our opinion, this may result in the wide use of culture method for diagnosis of H.pylori, study of antibiotic susceptibility and molecular genetic analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clinical%20trial" title="clinical trial">clinical trial</a>, <a href="https://publications.waset.org/abstracts/search?q=H.pylori" title=" H.pylori"> H.pylori</a>, <a href="https://publications.waset.org/abstracts/search?q=coccoid%20form" title=" coccoid form"> coccoid form</a>, <a href="https://publications.waset.org/abstracts/search?q=transport%20medium" title=" transport medium"> transport medium</a> </p> <a href="https://publications.waset.org/abstracts/164277/transport-medium-that-prevents-the-conversion-of-helicobacter-pylori-to-the-coccoid-form" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164277.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> Inhibitory Attributes of Saudi Honey Against Hospital Acquired Methicillin Resistant Staph. aureus (MRSA) and Acinetobacter baumannii</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Al-Hindi%20Rashad">Al-Hindi Rashad</a>, <a href="https://publications.waset.org/abstracts/search?q=Alotibi%20Ibrahim"> Alotibi Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study was to examine the antibacterial activity of the peroxide components of some locally produced honeys: Toran, Zaitoon (Olive), Shaflah, Saha, Jizan, Rabea Aja, Fakhira, Sedr Aljanoob, Tenhat, Karath and Bareq against two of the drug resistant bacteria; i.e., methicillin resistant Staph. aureus (MRSA, ATCC 43330) and Acinetobacter baumannii. Measurement of the antibacterial activity of honey samples by using the agar well diffusion method was adopted as follows: by using turbidity standard McFaraland 0.5, suspensions of bacterial strains MRSA ATCC 43330 and Acinetobacter baumannii were prepared. By the spreading plate method, 100 µl of the suspension was inoculated onto Muller-Hinton agar medium. On the inoculated agar medium, five wells were made using a sterile cork borer (diameter 5 mm).100 µl of honey dilutions (10%, 30%, 50%, 70% and 100%) were used. The study indicated that the highly effective activity was in some local honey samples such as Toran honey against MRSA, and Shafalah honey against MRSA and Acinetobacter baumannii which showed bactericidal effects at concentrations 70 % to 100 % as well. The majority of local honey samples recorded bacteriostatic effects on MRSA and Acinetobacter baumannii at consternations 50 % and above. In conclusion this investigation indicated that in regard to the majority inhibitory effect on microorganisms, the existing of H2O2 in honey samples together with phenolic content greatly provide a strong antibacterial activities among different types of honey, because in some previous studies the H2O2 content of honey interacts with phenolic content and showed better inhibitory effect than in absent of H2O2. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antibacterial%20activity" title="antibacterial activity">antibacterial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=honey" title=" honey"> honey</a>, <a href="https://publications.waset.org/abstracts/search?q=hospital%20acquired" title=" hospital acquired"> hospital acquired</a>, <a href="https://publications.waset.org/abstracts/search?q=Saudi%20Arabia" title=" Saudi Arabia"> Saudi Arabia</a> </p> <a href="https://publications.waset.org/abstracts/30900/inhibitory-attributes-of-saudi-honey-against-hospital-acquired-methicillin-resistant-staph-aureus-mrsa-and-acinetobacter-baumannii" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30900.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">492</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> Staying Cool in the Heat: How Tropical Finches Behaviorally Adjust to Extreme Heat in the Wild</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mara%20F.%20M%C3%BCller">Mara F. Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=Simon%20C.%20Griffith"> Simon C. Griffith</a>, <a href="https://publications.waset.org/abstracts/search?q=Tara%20L.%20Crewe"> Tara L. Crewe</a>, <a href="https://publications.waset.org/abstracts/search?q=Mirjam%20Kaestli"> Mirjam Kaestli</a>, <a href="https://publications.waset.org/abstracts/search?q=Sydney%20J.%20%20Collett"> Sydney J. Collett</a>, <a href="https://publications.waset.org/abstracts/search?q=Ian%20J.%20Radford"> Ian J. Radford</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamish%20A.%20%20Campbell"> Hamish A. Campbell</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The intensity and frequency of heat waves have been progressively increasing because of climate change. Passerines that inhabit very hot regions are already close to their physiological thermal limit and are thus considered highly susceptible to increased ambient temperatures. However, the extent by which passerines behaviorally compensate for extreme heat in their natural habitat has rarely been assessed due to monitoring challenges. To address this knowledge gap, coded VHF-nano transmitters were attached to a tropical passerine (Gouldian finch, Chloebia gouldiae). Fine-scale activity and movement were monitored throughout the hottest and driest period of the year using an array of static VHF-receivers. The finches were found to typically show a peak activity for a few hours at sunrise and remained relatively quiescent for the rest of the day. However, on extremely hot days (max temperature >38ºC), finches showed higher activity levels earlier in the morning and presented a second peak in the afternoon. Gouldian finches are physiologically challenged when ambient temperatures exceed 38ºC, suggesting the shift in movement activity reflects a behavioral mitigation strategy to extreme heat. These tropical finches already exist on an energetic knife-edge during this time of the year due to resource scarcity. Hence, the increased energetic expenditure to mitigate thermal stress may be detrimental. The study demonstrates the value of VHF-telemetry technology in monitoring the impact of global change on the biology of small-bodied mobile species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=animal%20tracking" title="animal tracking">animal tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=biotelemetry" title=" biotelemetry"> biotelemetry</a>, <a href="https://publications.waset.org/abstracts/search?q=climate%20change" title=" climate change"> climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=extreme%20heat" title=" extreme heat"> extreme heat</a>, <a href="https://publications.waset.org/abstracts/search?q=movement%20activity" title=" movement activity"> movement activity</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotelemetry" title=" radiotelemetry"> radiotelemetry</a>, <a href="https://publications.waset.org/abstracts/search?q=VHF-telemetry" title=" VHF-telemetry"> VHF-telemetry</a> </p> <a href="https://publications.waset.org/abstracts/169551/staying-cool-in-the-heat-how-tropical-finches-behaviorally-adjust-to-extreme-heat-in-the-wild" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169551.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">92</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> A Modular Reactor for Thermochemical Energy Storage Examination of Ettringite-Based Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Chen">B. Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Kuznik"> F. Kuznik</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Horgnies"> M. Horgnies</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Johannes"> K. Johannes</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Morin"> V. Morin</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Gengembre"> E. Gengembre</a> </p> <p class="card-text"><strong>Abstract:</strong></p> More attention on renewable energy has been done after the achievement of Paris Agreement against climate change. Solar-based technology is supposed to be one of the most promising green energy technologies for residential buildings since its widely thermal usage for hot water and heating. However, the seasonal mismatch between its production and consumption makes buildings need an energy storage system to improve the efficiency of renewable energy use. Indeed, there exist already different kinds of energy storage systems using sensible or latent heat. With the consideration of energy dissipation during storage and low energy density for above two methods, thermochemical energy storage is then recommended. Recently, ettringite (3CaO∙Al₂O₃∙3CaSO₄∙32H₂O) based materials have been reported as potential thermochemical storage materials because of high energy density (~500 kWh/m³), low material cost (700 €/m³) and low storage temperature (~60-70°C), compared to reported salt hydrates like SrBr₂·6H₂O (42 k€/m³, ~80°C), LaCl₃·7H₂O (38 k€/m³, ~100°C) and MgSO₄·7H₂O (5 k€/m³, ~150°C). Therefore, they have the possibility to be largely used in building sector with being coupled to normal solar panel systems. On the other side, the lack in terms of extensive examination leads to poor knowledge on their thermal properties and limit maturity of this technology. The aim of this work is to develop a modular reactor adapting to thermal characterizations of ettringite-based material particles of different sizes. The filled materials in the reactor can be self-compacted vertically to ensure hot air or humid air goes through homogenously. Additionally, quick assembly and modification of reactor, like LEGO™ plastic blocks, make it suitable to distinct thermochemical energy storage material samples with different weights (from some grams to several kilograms). In our case, quantity of stored and released energy, best work conditions and even chemical durability of ettringite-based materials have been investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dehydration" title="dehydration">dehydration</a>, <a href="https://publications.waset.org/abstracts/search?q=ettringite" title=" ettringite"> ettringite</a>, <a href="https://publications.waset.org/abstracts/search?q=hydration" title=" hydration"> hydration</a>, <a href="https://publications.waset.org/abstracts/search?q=modular%20reactor" title=" modular reactor"> modular reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=thermochemical%20energy%20storage" title=" thermochemical energy storage"> thermochemical energy storage</a> </p> <a href="https://publications.waset.org/abstracts/98860/a-modular-reactor-for-thermochemical-energy-storage-examination-of-ettringite-based-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98860.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">138</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Selection of Social and Sustainability Criteria for Public Investment Project Evaluation in Developing Countries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pintip%20Vajarothai">Pintip Vajarothai</a>, <a href="https://publications.waset.org/abstracts/search?q=Saad%20Al-Jibouri"> Saad Al-Jibouri</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20I.%20M.%20Halman"> Johannes I. M. Halman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Public investment projects are primarily aimed at achieving development strategies to increase national economies of scale and overall improvement in a country. However, experience shows that public projects, particularly in developing countries, struggle or fail to fulfill the immediate needs of local communities. In many cases, the reason for that is that projects are selected in a subjective manner and that a major part of the problem is related to the evaluation criteria and techniques used. The evaluation process is often based on a broad strategic economic effects rather than real benefits of projects to society or on the various needs from different levels (e.g. national, regional, local) and conditions (e.g. long-term and short-term requirements). In this paper, an extensive literature review of the types of criteria used in the past by various researchers in project evaluation and selection process is carried out and the effectiveness of such criteria and techniques is discussed. The paper proposes substitute social and project sustainability criteria to improve the conditions of local people and in particular the disadvantaged groups of the communities. Furthermore, it puts forward a way for modelling the interaction between the selected criteria and the achievement of the social goals of the affected community groups. The described work is part of developing a broader decision model for public investment project selection by integrating various aspects and techniques into a practical methodology. The paper uses Thailand as a case to review what and how the various evaluation techniques are currently used and how to improve the project evaluation and selection process related to social and sustainability issues in the country. The paper also uses an example to demonstrates how to test the feasibility of various criteria and how to model the interaction between projects and communities. The proposed model could be applied to other developing and developed countries in the project evaluation and selection process to improve its effectiveness in the long run. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=evaluation%20criteria" title="evaluation criteria">evaluation criteria</a>, <a href="https://publications.waset.org/abstracts/search?q=developing%20countries" title=" developing countries"> developing countries</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20investment" title=" public investment"> public investment</a>, <a href="https://publications.waset.org/abstracts/search?q=project%20selection%20methodology" title=" project selection methodology"> project selection methodology</a> </p> <a href="https://publications.waset.org/abstracts/60106/selection-of-social-and-sustainability-criteria-for-public-investment-project-evaluation-in-developing-countries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60106.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">276</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Operative versus Non-Operative Treatment of Scaphoid Non-Union in Children: A Case Presentation and Review of the Literature</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ilja%20K%C3%A4ch">Ilja Käch</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdul%20R.%20Jandali"> Abdul R. Jandali</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadja%20Zechmann-M%C3%BCller"> Nadja Zechmann-Müller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: We discuss the treatment of two young male patients suffering from scaphoid non-union after a traumatic scaphoid fracture. The currently propagated techniques for treating a scaphoid non-union in children are either the operative reconstruction of the scaphoid or the conservative treatment with splinting in a scaphoid cast. Cases: In the first case, we operated on a 13 years old male patient with a posttraumatic scaphoid non-union in the middle third with a humpback deformity. We resected the middle third of the scaphoid and grafted the defect with an iliac crest bone, and the DISI-Deformity was reduced. Fixation was performed with K-Wires and immobilisation in a scaphoid cast. In the second case a 13 years old male patient also with a posttraumatic scaphoid non-union in the middle third and humpback deformity, DISI-deformity, was treated conservatively. Immobilisation in a scaphoid cast for four months was performed. Results: Operative: One year postoperatively the patient achieved a painless free arc of motion. Flexion/Extension 70/0/60°, Radial-/Ulnarduction 30/0/30° and Pro-/Supination 90/0/90°. The computer tomogram showed complete consolidation and bony fusion of the iliac crest bone. Conservative: Six to eight months after conservative treatment the patient demonstrated painless motion and AROM Flexion/Extension 80/0/80°, Radial-/Ulnarduction and Pro-/Supination in maximum range. Complete consolidation in the computer tomogram with persistent humpback- and DISI deformity. Conclusion: In the literature, both techniques are described, either the operative scaphoid reconstruction or the conservative treatment with splinting. In our cases, both the operative and conservative treatments showed comparable good results. However, the humpback- and DISI deformity can only be addressed with a surgical approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=scaphoid" title="scaphoid">scaphoid</a>, <a href="https://publications.waset.org/abstracts/search?q=non-union" title=" non-union"> non-union</a>, <a href="https://publications.waset.org/abstracts/search?q=trauma" title=" trauma"> trauma</a>, <a href="https://publications.waset.org/abstracts/search?q=operative%20vs.%20non%20operative" title=" operative vs. non operative"> operative vs. non operative</a> </p> <a href="https://publications.waset.org/abstracts/161069/operative-versus-non-operative-treatment-of-scaphoid-non-union-in-children-a-case-presentation-and-review-of-the-literature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161069.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">76</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Linearly Polarized Single Photon Emission from Nonpolar, Semipolar and Polar Quantum Dots in GaN/InGaN Nanowires </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Snezana%20Lazic">Snezana Lazic</a>, <a href="https://publications.waset.org/abstracts/search?q=Zarko%20Gacevic"> Zarko Gacevic</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20Holmes"> Mark Holmes</a>, <a href="https://publications.waset.org/abstracts/search?q=Ekaterina%20Chernysheva"> Ekaterina Chernysheva</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcus%20M%C3%BCller"> Marcus Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Veit"> Peter Veit</a>, <a href="https://publications.waset.org/abstracts/search?q=Frank%20Bertram"> Frank Bertram</a>, <a href="https://publications.waset.org/abstracts/search?q=Juergen%20Christen"> Juergen Christen</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasuhiko%20Arakawa"> Yasuhiko Arakawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Enrique%20Calleja"> Enrique Calleja</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study reports how the pencil-like morphology of a homoepitaxially grown GaN nanowire can be exploited for the fabrication of a thin conformal InGaN nanoshell, hosting nonpolar, semipolar and polar single photon sources (SPSs). All three SPS types exhibit narrow emission lines (FWHM~0.35 - 2 meV) and high degrees of linear optical polarization (P > 70%) in the low-temperature micro-photoluminescence (µ-PL) experiments and are characterized by a pronounced antibunching in the photon correlation measurements (gcorrected(2)(0) < 0.3). The quantum-dot-like exciton localization centers induced by compositional fluctuations within the InGaN nanoshell are identified as the driving mechanism for the single photon emission. As confirmed by the low-temperature transmission electron microscopy combined with cathodoluminescence (TEM-CL) study, the crystal region (i.e. non-polar m-, semi-polar r- and polar c-facets) hosting the single photon emitters strongly affects their emission wavelength, which ranges from ultra-violet for the non-polar to visible for the polar SPSs. The photon emission lifetime is also found to be facet-dependent and varies from sub-nanosecond time scales for the non- and semi-polar SPSs to a few nanoseconds for the polar ones. These differences are mainly attributed to facet-dependent indium content and electric field distribution across the hosting InGaN nanoshell. The hereby reported pencil-like InGaN nanoshell is the first single nanostructure able to host all three types of single photon emitters and is thus a promising building block for tunable quantum light devices integrated into future photonic and optoelectronic circuits. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GaN%20nanowire" title="GaN nanowire">GaN nanowire</a>, <a href="https://publications.waset.org/abstracts/search?q=InGaN%20nanoshell" title=" InGaN nanoshell"> InGaN nanoshell</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20polarization" title=" linear polarization"> linear polarization</a>, <a href="https://publications.waset.org/abstracts/search?q=nonpolar" title=" nonpolar"> nonpolar</a>, <a href="https://publications.waset.org/abstracts/search?q=semipolar" title=" semipolar"> semipolar</a>, <a href="https://publications.waset.org/abstracts/search?q=polar%20quantum%20dots" title=" polar quantum dots"> polar quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=single-photon%20sources" title=" single-photon sources"> single-photon sources</a> </p> <a href="https://publications.waset.org/abstracts/69652/linearly-polarized-single-photon-emission-from-nonpolar-semipolar-and-polar-quantum-dots-in-ganingan-nanowires" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69652.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">392</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> Antagonistic Activity of Streptococcus Salivarius K12 Against Pathogenic and Opportunistic Microorganisms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andreev%20V.%20A.">Andreev V. A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Kovalenko%20T.%20N."> Kovalenko T. N.</a>, <a href="https://publications.waset.org/abstracts/search?q=Privolnev%20V.%20V."> Privolnev V. V.</a>, <a href="https://publications.waset.org/abstracts/search?q=Chernavin%20A.%20V."> Chernavin A. V.</a>, <a href="https://publications.waset.org/abstracts/search?q=Knyazeva%20E.%20R."> Knyazeva E. R.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aim: To evaluate the antagonistic activity of Streptococcus salivarius K12 (SsK12) against ENT and oral cavity infection pathogens (S. pneumoniae, S. pyogenes, S. aureus), gram-negative bacteria (E. coli, P. aeruginosa) and C. albicans. Materials and methods: The probiotic strain SsK12 was isolated from the dietary supplement containing at least 1 × 109 CFU per tablet. The tablet was dissolved in the enrichment broth. The resulting suspension was seeded on 5% blood agar and incubated at 35°C in 4-6% CO2 for 48 hours. The raised culture was identified as Streptococcus salivarius with MALDI-TOF mass spectrometry method. The evaluation of SsK12 antagonistic activity was carried out using a perpendicular streak technique. The daily SsK12 culture was inoculated as heavy streaks with a loop at one side of Petri dish with the Muller-Hinton agar (MHA) and incubated for 24 hours at 350 C in anaerobic conditions. It was supposed that bacteriocins would diffuse over the whole area of the agar media. On the next day S. pneumoniae, S. pyogenes, S. aureus, E. coli, P. aeruginosa and C. albicans clinical isolates were streaked at the clear side of MHA Petri dish. MHA Petri dish inoculated with SsK12 (one part) and with the respective clinical isolates (another part) streaked perpendicularly on the same day was used as the control. Results: There was no growth of S. pyogenes on the Petri dish with SsK12 daily culture; the growth of a few colonies of S. pneumonia was noted. The growth of S. aureus, E. coli, P. aeruginosa and C. albicans was noted along the inoculated streak. On the control Petri dish with simultaneous inoculating of the SsK12 strain and the test cultures, the growth of all the testes isolates was noted. Conclusions: (1) SsK12 possesses perfect antagonistic activity against S. pyogenes and good activity against S. pneumoniae. (2) There was no antagonistic activity of SsK12 against S. aureus, E. coli, P. aeruginosa and C. albicans. (3) SsK12 antagonistic properties make it possible to use this probiotic strain for prophylaxis of recurrent ENT infections. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=probiotics" title="probiotics">probiotics</a>, <a href="https://publications.waset.org/abstracts/search?q=SsK12" title=" SsK12"> SsK12</a>, <a href="https://publications.waset.org/abstracts/search?q=streptococcus%20salivarius%20K12" title=" streptococcus salivarius K12"> streptococcus salivarius K12</a>, <a href="https://publications.waset.org/abstracts/search?q=antagonistic%20activity" title=" antagonistic activity"> antagonistic activity</a> </p> <a href="https://publications.waset.org/abstracts/182956/antagonistic-activity-of-streptococcus-salivarius-k12-against-pathogenic-and-opportunistic-microorganisms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182956.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">59</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Process Evaluation for a Trienzymatic System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20M%C3%BCller">C. Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Ortmann"> T. Ortmann</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Scholl"> S. Scholl</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20J.%20J%C3%B6rdening"> H. J. Jördening</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multienzymatic catalysis can be used as an alternative to chemical synthesis or hydrolysis of polysaccharides for the production of high value oligosaccharides from cheap resources such as sucrose. However, development of multienzymatic processes is complex, especially with respect to suitable conditions for enzymes originating from different organisms. Furthermore, an optimal configuration of the catalysts in a reaction cascade has to be found. These challenges can be approached by design of experiments. The system investigated in this study is a trienzymatic catalyzed reaction which results in laminaribiose production from sucrose and comprises covalently immobilized sucrose phosphorylase (SP), glucose isomerase (GI) and laminaribiose phosphorylase (LP). Operational windows determined with design of experiments and kinetic data of the enzymes were used to optimize the enzyme ratio for maximum product formation and minimal production of byproducts. After adjustment of the enzyme activity ratio to 1: 1.74: 2.23 (SP: LP: GI), different process options were investigated in silico. The considered options included substrate dependency, the use of glucose as co-substrate and substitution of glucose isomerase by glucose addition. Modeling of batch operation in a stirred tank reactor led to yields of 44.4% whereas operation in a continuous stirred tank reactor resulted in product yields of 22.5%. The maximum yield in a bienzymatic system comprised of sucrose phosphorylase and laminaribiose phosphorylase was 67.7% with sucrose and different amounts of glucose as substrate. The experimental data was in good compliance with the process model for batch operation. The continuous operation will be investigated in further studies. Simulation of operational process possibilities enabled us to compare various operational modes regarding different aspects such as cost efficiency, with the minimum amount of expensive and time-consuming practical experiments. This gives us more flexibility in process implementation and allows us, for example, to change the production goal from laminaribiose to higher oligosaccharides. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=design%20of%20experiments" title="design of experiments">design of experiments</a>, <a href="https://publications.waset.org/abstracts/search?q=enzyme%20kinetics" title=" enzyme kinetics"> enzyme kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-enzymatic%20system" title=" multi-enzymatic system"> multi-enzymatic system</a>, <a href="https://publications.waset.org/abstracts/search?q=in%20silico%20process%20development" title=" in silico process development "> in silico process development </a> </p> <a href="https://publications.waset.org/abstracts/36621/process-evaluation-for-a-trienzymatic-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36621.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">338</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Influence of an Octenidine Based Wound Gel on Postoperative Wound Healing and Scarring after Abdominoplasty</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Matiasek">Johannes Matiasek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction and Aims: Octenidine is a common antiseptic agent in the area of surgical interventions because of its antimicrobial efficacy and outstanding biocompatibility index. We investigate the direct postoperative application of octenilin® on typical procedures in the field of plastic surgery in a prospective, randomized controlled intervention study. The aim of this study is to determine the influence of a direct postoperative application of an octenidine-containing wound gel on wound healing and scarring after abdominoplasty. Material and Methods: In this study, we enrolled 33 patients who underwent abdominoplasty because of medical indications (e.g. Cutis laxa abdominis). To ensure an intraindividual comparison, each patient received both dressings (study-group: octenilin® wound gel; control-group: Omnistrip® dry plaster) immediately after surgery. We evaluate wound-healing tendency, pain during dressing changes and scar formation after two weeks, three, six and twelve months. Regarding scar-evaluation skin-elasticity, sebum on the skin, transepidermal waterloss, skin hydration, melanin content and erythema level were determined with special probes. Furthermore the Vancouver Scar Scale (VSS) and pain level during dressing change are determined. Results: At the time of surgery the mean patient’s age was 44.1 years. On average 5.6 dressing changes were necessary. Wound healing disorders occurred more often in the control-group. In the control-group (dry plaster Omnistrip®) patients reported significantly more pain and superficial skin injuries during dressing changes occurred. Objective scar-evaluation after 3, 6 and 12 months resulted in a significant higher skin-elasticity and significant lower transepidermal water loss in the octenilin® group which is confirmed in the VSS. Conclusion: The immediate postoperative application of the octenidine-containing hydrogel octenilin® after abdominoplasty results in favoured scar formation compared to our actual standard therapy. Less hypertrophic scar formation was observed in the study-group. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=abdominoplasty" title="abdominoplasty">abdominoplasty</a>, <a href="https://publications.waset.org/abstracts/search?q=octenidine" title=" octenidine"> octenidine</a>, <a href="https://publications.waset.org/abstracts/search?q=scarring" title=" scarring"> scarring</a>, <a href="https://publications.waset.org/abstracts/search?q=wound%20healing" title=" wound healing"> wound healing</a> </p> <a href="https://publications.waset.org/abstracts/56444/influence-of-an-octenidine-based-wound-gel-on-postoperative-wound-healing-and-scarring-after-abdominoplasty" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56444.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">202</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> Dido: An Automatic Code Generation and Optimization Framework for Stencil Computations on Distributed Memory Architectures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mariem%20Saied">Mariem Saied</a>, <a href="https://publications.waset.org/abstracts/search?q=Jens%20Gustedt"> Jens Gustedt</a>, <a href="https://publications.waset.org/abstracts/search?q=Gilles%20Muller"> Gilles Muller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present Dido, a source-to-source auto-generation and optimization framework for multi-dimensional stencil computations. It enables a large programmer community to easily and safely implement stencil codes on distributed-memory parallel architectures with Ordered Read-Write Locks (ORWL) as an execution and communication back-end. ORWL provides inter-task synchronization for data-oriented parallel and distributed computations. It has been proven to guarantee equity, liveness, and efficiency for a wide range of applications, particularly for iterative computations. Dido consists mainly of an implicitly parallel domain-specific language (DSL) implemented as a source-level transformer. It captures domain semantics at a high level of abstraction and generates parallel stencil code that leverages all ORWL features. The generated code is well-structured and lends itself to different possible optimizations. In this paper, we enhance Dido to handle both Jacobi and Gauss-Seidel grid traversals. We integrate temporal blocking to the Dido code generator in order to reduce the communication overhead and minimize data transfers. To increase data locality and improve intra-node data reuse, we coupled the code generation technique with the polyhedral parallelizer Pluto. The accuracy and portability of the generated code are guaranteed thanks to a parametrized solution. The combination of ORWL features, the code generation pattern and the suggested optimizations, make of Dido a powerful code generation framework for stencil computations in general, and for distributed-memory architectures in particular. We present a wide range of experiments over a number of stencil benchmarks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stencil%20computations" title="stencil computations">stencil computations</a>, <a href="https://publications.waset.org/abstracts/search?q=ordered%20read-write%20locks" title=" ordered read-write locks"> ordered read-write locks</a>, <a href="https://publications.waset.org/abstracts/search?q=domain-specific%20language" title=" domain-specific language"> domain-specific language</a>, <a href="https://publications.waset.org/abstracts/search?q=polyhedral%20model" title=" polyhedral model"> polyhedral model</a>, <a href="https://publications.waset.org/abstracts/search?q=experiments" title=" experiments"> experiments</a> </p> <a href="https://publications.waset.org/abstracts/105064/dido-an-automatic-code-generation-and-optimization-framework-for-stencil-computations-on-distributed-memory-architectures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105064.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">127</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Comparison between Open and Closed System for Dewatering with Geotextile: Field and Comparative Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matheus%20M%C3%BCller">Matheus Müller</a>, <a href="https://publications.waset.org/abstracts/search?q=Delma%20Vidal"> Delma Vidal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper aims to expose two techniques of dewatering for sludge, analyzing its operations and dewatering processes, aiming at improving the conditions of disposal of residues with high liquid content. It describes the field tests performed on two geotextile systems, a closed geotextile tube and an open geotextile drying bed, both of which are submitted to two filling cycles. The sludge used in the filling cycles for the field trials is from the water treatment plant of the Technological Center of Aeronautics – CTA, in São José dos Campos, Brazil. Data about volume and height abatement due to the dewatering and consolidation were collected per time, until it was observed constancy. With the laboratory analysis of the sludge allied to the data collected in the field, it was possible to perform a critical comparative study between the observed and the scientific literature, in this way, this paper expresses the data obtained and compares them with the bibliography. The tests were carried out on three fronts: field tests, including the filling cycles of the systems with the sludge from CTA, taking measurements of filling time per cycle and maximum filling height per cycle, heights against the abatement by dewatering of the systems over time; tests carried out in the laboratory, including the characterization of the sludge and removal of material samples from the systems to ascertain the solids content within the systems per time and; comparing the data obtained in the field and laboratory tests with the scientific literature. Through the study, it was possible to perceive that the process of densification of the material inside a closed system, such as the geotextile tube, occurs faster than the observed in the drying bed system. This process of accelerated densification can be brought about by the pumping pressure of the sludge in its filling and by the confinement of the residue through the permeable geotextile membrane (allowing water to pass through), accelerating the process of densification and dewatering by its own weight after the filling with sludge. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=consolidation" title="consolidation">consolidation</a>, <a href="https://publications.waset.org/abstracts/search?q=dewatering" title=" dewatering"> dewatering</a>, <a href="https://publications.waset.org/abstracts/search?q=geotextile%20drying%20bed" title=" geotextile drying bed"> geotextile drying bed</a>, <a href="https://publications.waset.org/abstracts/search?q=geotextile%20tube" title=" geotextile tube"> geotextile tube</a> </p> <a href="https://publications.waset.org/abstracts/104393/comparison-between-open-and-closed-system-for-dewatering-with-geotextile-field-and-comparative-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104393.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">127</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Lignin Phenol Formaldehyde Resole Resin: Synthesis and Characteristics </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Masoumeh%20Ghorbania">Masoumeh Ghorbania</a>, <a href="https://publications.waset.org/abstracts/search?q=Falk%20Liebnerb"> Falk Liebnerb</a>, <a href="https://publications.waset.org/abstracts/search?q=Hendrikus%20W.G.%20van%20Herwijnenc"> Hendrikus W.G. van Herwijnenc</a>, <a href="https://publications.waset.org/abstracts/search?q=Johannes%20Konnertha"> Johannes Konnertha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phenol formaldehyde (PF) resins are widely used as wood adhesives for variety of industrial products such as plywood, laminated veneer lumber and others. Lignin as a main constituent of wood has become well-known as a potential substitute for phenol in PF adhesives because of their structural similarity. During the last decades numerous research approaches have been carried out to substitute phenol with pulping-derived lignin, whereby the lower reactivity of resins synthesized with shares of lignin seem to be one of the major challenges. This work reports about a systematic screening of different types of lignin (plant origin and pulping process) for their suitability to replace phenol in phenolic resins. Lignin from different plant sources (softwood, hardwood and grass) were used, as these should differ significantly in their reactivity towards formaldehyde of their reactive phenolic core units. Additionally a possible influence of the pulping process was addressed by using the different types of lignin from soda, kraft, and organosolv process and various lignosulfonates (sodium, ammonium, calcium, magnesium). To determine the influence of lignin on the adhesive performance beside others the rate of viscosity development, bond strength development of varying hot pressing time and other thermal properties were investigated. To evaluate the performance of the cured end product, a few selected properties were studied at the example of solid wood-adhesive bond joints, compact panels and plywood. As main results it was found that lignin significantly accelerates the viscosity development in adhesive synthesis. Bonding strength development during curing of adhesives decelerated for all lignin types, while this trend was least for pine kraft lignin and spruce sodium lignosulfonate. However, the overall performance of the products prepared with the latter adhesives was able to fulfill main standard requirements, even after exposing the products to harsh environmental conditions. Thus, a potential application can be considered for processes where reactivity is less critical but adhesive cost and product performance is essential. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phenol%20formaldehyde%20resin" title="phenol formaldehyde resin">phenol formaldehyde resin</a>, <a href="https://publications.waset.org/abstracts/search?q=lignin%20phenol%20formaldehyde%20resin" title=" lignin phenol formaldehyde resin"> lignin phenol formaldehyde resin</a>, <a href="https://publications.waset.org/abstracts/search?q=ABES" title=" ABES"> ABES</a>, <a href="https://publications.waset.org/abstracts/search?q=DSC" title=" DSC"> DSC</a> </p> <a href="https://publications.waset.org/abstracts/50817/lignin-phenol-formaldehyde-resole-resin-synthesis-and-characteristics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50817.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">237</span> </span> </div> </div> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Johannes%20M%C3%BCller&page=2" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Johannes%20M%C3%BCller&page=1">1</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Johannes%20M%C3%BCller&page=2">2</a></li> <li class="page-item active"><span class="page-link">3</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Johannes%20M%C3%BCller&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Johannes%20M%C3%BCller&page=5">5</a></li> <li class="page-item"><a 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