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Paraskevas</title> <meta name="description" content="Search results for: Antonios Paraskevas"> <meta name="keywords" content="Antonios Paraskevas"> <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 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action="https://publications.waset.org/abstracts/search"> <div 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="Antonios Paraskevas"> <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> 9</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Antonios Paraskevas</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> A Multi-Criteria Decision Method for the Recruitment of Academic Personnel Based on the Analytical Hierarchy Process and the Delphi Method in a Neutrosophic Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Paraskevas">Antonios Paraskevas</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Madas"> Michael Madas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For a university to maintain its international competitiveness in education, it is essential to recruit qualitative academic staff as it constitutes its most valuable asset. This selection demonstrates a significant role in achieving strategic objectives, particularly by emphasizing a firm commitment to the exceptional student experience and innovative teaching and learning practices of high quality. In this vein, the appropriate selection of academic staff establishes a very important factor of competitiveness, efficiency and reputation of an academic institute. Within this framework, our work demonstrates a comprehensive methodological concept that emphasizes the multi-criteria nature of the problem and how decision-makers could utilize our approach in order to proceed to the appropriate judgment. The conceptual framework introduced in this paper is built upon a hybrid neutrosophic method based on the Neutrosophic Analytical Hierarchy Process (N-AHP), which uses the theory of neutrosophy sets and is considered suitable in terms of a significant degree of ambiguity and indeterminacy observed in the decision-making process. To this end, our framework extends the N-AHP by incorporating the Neutrosophic Delphi Method (N-DM). By applying the N-DM, we can take into consideration the importance of each decision-maker and their preferences per evaluation criterion. To the best of our knowledge, the proposed model is the first which applies the Neutrosophic Delphi Method in the selection of academic staff. As a case study, it was decided to use our method for a real problem of academic personnel selection, having as the main goal to enhance the algorithm proposed in previous scholars’ work, and thus taking care of the inherent ineffectiveness which becomes apparent in traditional multi-criteria decision-making methods when dealing with situations alike. As a further result, we prove that our method demonstrates greater applicability and reliability when compared to other decision models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multi-criteria%20decision%20making%20methods" title="multi-criteria decision making methods">multi-criteria decision making methods</a>, <a href="https://publications.waset.org/abstracts/search?q=analytical%20hierarchy%20process" title=" analytical hierarchy process"> analytical hierarchy process</a>, <a href="https://publications.waset.org/abstracts/search?q=delphi%20method" title=" delphi method"> delphi method</a>, <a href="https://publications.waset.org/abstracts/search?q=personnel%20recruitment" title=" personnel recruitment"> personnel recruitment</a>, <a href="https://publications.waset.org/abstracts/search?q=neutrosophic%20set%20theory" title=" neutrosophic set theory"> neutrosophic set theory</a> </p> <a href="https://publications.waset.org/abstracts/163678/a-multi-criteria-decision-method-for-the-recruitment-of-academic-personnel-based-on-the-analytical-hierarchy-process-and-the-delphi-method-in-a-neutrosophic-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163678.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">117</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">8</span> A Multi-criteria Decision Method For The Recruitment Of Academic Personnel Based On The Analytical Hierarchy Process And The Delphi Method In A Neutrosophic Environment (Full Text)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Paraskevas">Antonios Paraskevas</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Madas"> Michael Madas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For a university to maintain its international competitiveness in education, it is essential to recruit qualitative academic staff as it constitutes its most valuable asset. This selection demonstrates a significant role in achieving strategic objectives, particularly by emphasizing a firm commitment to exceptional student experience and innovative teaching and learning practices of high quality. In this vein, the appropriate selection of academic staff establishes a very important factor of competitiveness, efficiency and reputation of an academic institute. Within this framework, our work demonstrates a comprehensive methodological concept that emphasizes on the multi-criteria nature of the problem and on how decision makers could utilize our approach in order to proceed to the appropriate judgment. The conceptual framework introduced in this paper is built upon a hybrid neutrosophic method based on the Neutrosophic Analytical Hierarchy Process (N-AHP), which uses the theory of neutrosophy sets and is considered suitable in terms of significant degree of ambiguity and indeterminacy observed in decision-making process. To this end, our framework extends the N-AHP by incorporating the Neutrosophic Delphi Method (N-DM). By applying the N-DM, we can take into consideration the importance of each decision-maker and their preferences per evaluation criterion. To the best of our knowledge, the proposed model is the first which applies Neutrosophic Delphi Method in the selection of academic staff. As a case study, it was decided to use our method to a real problem of academic personnel selection, having as main goal to enhance the algorithm proposed in previous scholars’ work, and thus taking care of the inherit ineffectiveness which becomes apparent in traditional multi-criteria decision-making methods when dealing with situations alike. As a further result, we prove that our method demonstrates greater applicability and reliability when compared to other decision models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=analytical%20hierarchy%20process" title="analytical hierarchy process">analytical hierarchy process</a>, <a href="https://publications.waset.org/abstracts/search?q=delphi%20method" title=" delphi method"> delphi method</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-criteria%20decision%20maiking%20method" title=" multi-criteria decision maiking method"> multi-criteria decision maiking method</a>, <a href="https://publications.waset.org/abstracts/search?q=neutrosophic%20set%20theory" title=" neutrosophic set theory"> neutrosophic set theory</a>, <a href="https://publications.waset.org/abstracts/search?q=personnel%20recruitment" title=" personnel recruitment"> personnel recruitment</a> </p> <a href="https://publications.waset.org/abstracts/169367/a-multi-criteria-decision-method-for-the-recruitment-of-academic-personnel-based-on-the-analytical-hierarchy-process-and-the-delphi-method-in-a-neutrosophic-environment-full-text" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169367.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">200</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">7</span> Conceptual Design of an Automated Biomethane Test Using Interacting Criteria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vassilis%20C.%20Moulianitis">Vassilis C. Moulianitis</a>, <a href="https://publications.waset.org/abstracts/search?q=Evgenios%20Scourboutis"> Evgenios Scourboutis</a>, <a href="https://publications.waset.org/abstracts/search?q=Ilias%20Katsanis"> Ilias Katsanis</a>, <a href="https://publications.waset.org/abstracts/search?q=Paraskevas%20Papanikos"> Paraskevas Papanikos</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolas%20Zacharopoulos"> Nikolas Zacharopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the conceptual design of an automated biomethane potential measurement system. First, the design specifications for the BMP system and the basic components of the system will be presented. Three concepts that meet the design specifications will be presented. The basic characteristics of each concept will be analyzed in detail. The concepts will be evaluated using a set of design criteria that includes flexibility, cost, size, complexity, aesthetics, and accessibility in order to determine the best solution. The evaluation will be based on the discrete Choquet integral. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automated%20biomethane%20test" title="automated biomethane test">automated biomethane test</a>, <a href="https://publications.waset.org/abstracts/search?q=conceptual%20mechatronics%20design" title=" conceptual mechatronics design"> conceptual mechatronics design</a>, <a href="https://publications.waset.org/abstracts/search?q=concept%20evaluation" title=" concept evaluation"> concept evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=Choquet%20integral" title=" Choquet integral"> Choquet integral</a> </p> <a href="https://publications.waset.org/abstracts/160417/conceptual-design-of-an-automated-biomethane-test-using-interacting-criteria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160417.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">94</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">6</span> Aspects of the Detail Design of an Automated Biomethane Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ilias%20Katsanis">Ilias Katsanis</a>, <a href="https://publications.waset.org/abstracts/search?q=Paraskevas%20Papanikos"> Paraskevas Papanikos</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolas%20Zacharopoulos"> Nikolas Zacharopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Vassilis%20C.%20Moulianitis"> Vassilis C. Moulianitis</a>, <a href="https://publications.waset.org/abstracts/search?q=Evgenios%20Scourboutis"> Evgenios Scourboutis</a>, <a href="https://publications.waset.org/abstracts/search?q=Diamantis%20T.%20Panagiotarakos"> Diamantis T. Panagiotarakos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents aspects of the detailed design of an automated biomethane potential measurement system using CAD techniques. First, the design specifications grouped in eight sets that are used to design the design alternatives are briefly presented. Then, the major components of the final concept, as well as the design of the test, are presented. The material selection process is made using ANSYS EduPack database software. The mechanical behavior of one component developed in Creo v.5 is evaluated using finite element analysis. Finally, aspects of software development that integrate the BMP test is finally presented. This paper shows the advantages of CAD techniques in product design applied in the design of a mechatronic product. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=automated%20biomethane%20test" title="automated biomethane test">automated biomethane test</a>, <a href="https://publications.waset.org/abstracts/search?q=detail%20mechatronics%20design" title=" detail mechatronics design"> detail mechatronics design</a>, <a href="https://publications.waset.org/abstracts/search?q=materials%20selection" title=" materials selection"> materials selection</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20analysis" title=" mechanical analysis"> mechanical analysis</a> </p> <a href="https://publications.waset.org/abstracts/160418/aspects-of-the-detail-design-of-an-automated-biomethane-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160418.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">88</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">5</span> The Evolution of the Simulated and Observed Star Formation Rates of Galaxies for the Past 13 Billion Years</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Katsianis">Antonios Katsianis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> I present the evolution of the galaxy Star Formation Rate Function (SFRF), star formation rate-stellar mass relation (SFR-M*) and Cosmic Star Formation Rate Density (CSFRD) of z = 0-8 galaxies employing both the Evolution and Assembly of GaLaxies and their Environments (EAGLE) simulations and a compilation of UV, Ha, radio and IR data. While I present comparisons between the above, I evaluate the effect and importance of supernovae/active galactic nuclei feedback. The relation between the star formation rate and stellar mass of galaxies represents a fundamental constraint on galaxy formation, and has been studied extensively both in observations and cosmological hydrodynamic simulations. However, a tension between the above is reported in the literature. I present the evolution of the SFR-M* relation and demonstrate the inconsistencies between observations that are retrieved using different methods. I employ cosmological hydrodynamic simulations combined with radiative transfer methods and compare these with a range of observed data in order to investigate further the root of this tension. Last, I present insights about the scatter of the SFR-M* relation and investigate which mechanisms (e.g. feedback) drive its shape and evolution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cosmological%20simulations" title="cosmological simulations">cosmological simulations</a>, <a href="https://publications.waset.org/abstracts/search?q=galaxy%20formation%20and%20evolution" title=" galaxy formation and evolution"> galaxy formation and evolution</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20formation%20rate" title=" star formation rate"> star formation rate</a>, <a href="https://publications.waset.org/abstracts/search?q=stellar%20masses" title=" stellar masses"> stellar masses</a> </p> <a href="https://publications.waset.org/abstracts/118594/the-evolution-of-the-simulated-and-observed-star-formation-rates-of-galaxies-for-the-past-13-billion-years" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118594.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">148</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">4</span> A Web Application for Screening Dyslexia in Greek Students</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Panagopoulos">Antonios Panagopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Stamoulis%20Georgios"> Stamoulis Georgios</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dyslexia's diagnosis is made taking into account reading and writing skills and is carried out by qualified scientific staff. In addition, there are screening tests that are designed to give an indication of possible dyslexic difficulties. Their main advantage is that they create a pleasant environment for the user and reduce the stress that can lead to false results. An online application was created for the first time, as far as authors' knowledge, for screening Dyslexia in Greek high school students named «DyScreTe». Thus, a sample of 240 students between 16 and 18 years old in Greece was taken, of which 120 were diagnosed with dyslexia by an official authority in Greece, and 120 were typically developed. The main hypothesis that was examined is that students who were diagnosed with dyslexia by official authorities in Greece had significantly lower performance in the respective software tests. The results verified the hypothesis we made those children with dyslexia in each test had a lower performance com-pared to the type developed in successful responses, except for the intelligence test. After random sampling, it was shown that the new online application was a useful tool for screening dyslexia. However, computer evaluation cannot replace the diagnosis by a professional expert, but with the results of this application, the interdisciplinary team that deals with the differential diagnosis will create and evaluate, at a later time, the appropriate intervention program. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dyslexia" title="dyslexia">dyslexia</a>, <a href="https://publications.waset.org/abstracts/search?q=screening%20tests" title=" screening tests"> screening tests</a>, <a href="https://publications.waset.org/abstracts/search?q=deficits" title=" deficits"> deficits</a>, <a href="https://publications.waset.org/abstracts/search?q=application" title=" application"> application</a> </p> <a href="https://publications.waset.org/abstracts/163596/a-web-application-for-screening-dyslexia-in-greek-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163596.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">85</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">3</span> BiLex-Kids: A Bilingual Word Database for Children 5-13 Years Old</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aris%20R.%20Terzopoulos">Aris R. Terzopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgia%20Z.%20Niolaki"> Georgia Z. Niolaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Lynne%20G.%20Duncan"> Lynne G. Duncan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20A.%20J.%20Wilson"> Mark A. J. Wilson</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Kyparissiadis"> Antonios Kyparissiadis</a>, <a href="https://publications.waset.org/abstracts/search?q=Jackie%20Masterson"> Jackie Masterson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As word databases for bilingual children are not available, researchers, educators and textbook writers must rely on monolingual databases. The aim of this study is thus to develop a bilingual word database, BiLex-kids, an online open access developmental word database for 5-13 year old bilingual children who learn Greek as a second language and have English as their dominant one. BiLex-kids is compiled from 120 Greek textbooks used in Greek-English bilingual education in the UK, USA and Australia, and provides word translations in the two languages, pronunciations in Greek, and psycholinguistic variables (e.g. Zipf, Frequency per million, Dispersion, Contextual Diversity, Neighbourhood size). After clearing the textbooks of non-relevant items (e.g. punctuation), algorithms were applied to extract the psycholinguistic indices for all words. As well as one total lexicon, the database produces values for all ages (one lexicon for each age) and for three age bands (one lexicon per age band: 5-8, 9-11, 12-13 years). BiLex-kids provides researchers with accurate figures for a wide range of psycholinguistic variables, making it a useful and reliable research tool for selecting stimuli to examine lexical processing among bilingual children. In addition, it offers children the opportunity to study word spelling, learn translations and listen to pronunciations in their second language. It further benefits educators in selecting age-appropriate words for teaching reading and spelling, while special educational needs teachers will have a resource to control the content of word lists when designing interventions for bilinguals with literacy difficulties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilingual%20children" title="bilingual children">bilingual children</a>, <a href="https://publications.waset.org/abstracts/search?q=psycholinguistics" title=" psycholinguistics"> psycholinguistics</a>, <a href="https://publications.waset.org/abstracts/search?q=vocabulary%20development" title=" vocabulary development"> vocabulary development</a>, <a href="https://publications.waset.org/abstracts/search?q=word%20databases" title=" word databases"> word databases</a> </p> <a href="https://publications.waset.org/abstracts/70529/bilex-kids-a-bilingual-word-database-for-children-5-13-years-old" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70529.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">311</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">2</span> Stable Isotope Ratios Data for Tracing the Origin of Greek Olive Oils and Table Olives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Efthimios%20Kokkotos">Efthimios Kokkotos</a>, <a href="https://publications.waset.org/abstracts/search?q=Kostakis%20Marios"> Kostakis Marios</a>, <a href="https://publications.waset.org/abstracts/search?q=Beis%20Alexandros"> Beis Alexandros</a>, <a href="https://publications.waset.org/abstracts/search?q=Angelos%20Patakas"> Angelos Patakas</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Avgeris"> Antonios Avgeris</a>, <a href="https://publications.waset.org/abstracts/search?q=Vassilios%20Triantafyllidis"> Vassilios Triantafyllidis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> H, C, and O stable isotope ratios were measured in different olive oils and table olives originating from different regions of Greece. In particular, the stable isotope ratios of different olive oils produced in the Lakonia region (Peloponesse – South Greece) from different varieties, i.e., cvs ‘Athinolia’ and ‘koroneiki’, were determined. Additionally, stable isotope ratios were also measured in different table olives (cvs ‘koroneiki’ and ‘kalamon’) produced in the same region (Messinia). The aim of this study was to provide sufficient isotope ratio data regarding each variety and region of origin that could be used in discriminative studies of oil olives and table olives produced by different varieties in other regions. In total, 97 samples of olive oil (cv ‘Athinolia’ and ‘koroneiki’) and 67 samples of table olives (cvs ‘kalmon’ and ‘koroneiki’) collected during two consecutive sampling periods (2021-2022 and 2022-2023) were measured. The C, H, and O isotope ratios were measured using Isotope Ratio Mass Spectrometry (IRMS), and the results obtained were analyzed using chemometric techniques. The measurements of the isotope ratio analyses were expressed in permille (‰) using the delta δ notation (δ=Rsample/Rstandard-1, where Rsample and Rstandardis represent the isotope ratio of sample and standard). Results indicate that stable isotope ratios of C, H, and O ranged between -28,5+0,45‰, -142,83+2,82‰, 25,86+0,56‰ and -29,78+0,71‰, -143,62+1,4‰, 26,32+0,55‰ in olive oils produced in Lakonia region from ‘Athinolia’ and ‘koroneiki ‘varieties, respectively. The C, H, and O values from table olives originated from Messinia region were -28,58+0,63‰, -138,09+3,27‰, 25,45+0,62‰ and -29,41+0,59‰,-137,67+1,15‰, 24,37+0,6‰ for ‘Kalamon’ and ‘koroneiki’ olives respectively. Acknowledgments: This research has been co-financed by the European Regional Development Fund of the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH—CREATE—INNOVATE (Project code: T2EDK-02637; MIS 5075094, Title: ‘Innovative Methodological Tools for Traceability, Certification and Authenticity Assessment of Olive Oil and Olives’). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=olive%20oil" title="olive oil">olive oil</a>, <a href="https://publications.waset.org/abstracts/search?q=table%20olives" title=" table olives"> table olives</a>, <a href="https://publications.waset.org/abstracts/search?q=Isotope%20ratio" title=" Isotope ratio"> Isotope ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=IRMS" title=" IRMS"> IRMS</a>, <a href="https://publications.waset.org/abstracts/search?q=geographical%20origin" title=" geographical origin"> geographical origin</a> </p> <a href="https://publications.waset.org/abstracts/181714/stable-isotope-ratios-data-for-tracing-the-origin-of-greek-olive-oils-and-table-olives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181714.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">57</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">1</span> HyDUS Project; Seeking a Wonder Material for Hydrogen Storage</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Monica%20Jong">Monica Jong</a>, <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Banos"> Antonios Banos</a>, <a href="https://publications.waset.org/abstracts/search?q=Tom%20Scott"> Tom Scott</a>, <a href="https://publications.waset.org/abstracts/search?q=Chris%20Webster"> Chris Webster</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Fletcher"> David Fletcher</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogen, as a clean alternative to methane, is relatively easy to make, either from water using electrolysis or from methane using steam reformation. However, hydrogen is much trickier to store than methane, and without effective storage, it simply won’t pass muster as a suitable methane substitute. Physical storage of hydrogen is quite inefficient. Storing hydrogen as a compressed gas at pressures up to 900 times atmospheric is volumetrically inefficient and carries safety implications, whilst storing it as a liquid requires costly and constant cryogenic cooling to minus 253°C. This is where DU steps in as a possible solution. Across the periodic table, there are many different metallic elements that will react with hydrogen to form a chemical compound known as a hydride (or metal hydride). From a chemical perspective, the ‘king’ of the hydride forming metals is palladium because it offers the highest hydrogen storage volumetric capacity. However, this material is simply too expensive and scarce to be used in a scaled-up bulk hydrogen storage solution. Depleted Uranium is the second most volumetrically efficient hydride-forming metal after palladium. The UK has accrued a significant amount of DU because of manufacturing nuclear fuel for many decades, and that is currently without real commercial use. Uranium trihydride (UH3) contains three hydrogen atoms for every uranium atom and can chemically store hydrogen at ambient pressure and temperature at more than twice the density of pure liquid hydrogen for the same volume. To release the hydrogen from the hydride, all you do is heat it up. At temperatures above 250°C, the hydride starts to thermally decompose, releasing hydrogen as a gas and leaving the Uranium as a metal again. The reversible nature of this reaction allows the hydride to be formed and unformed again and again, enabling its use as a high-density hydrogen storage material which is already available in large quantities because of its stockpiling as a ‘waste’ by-product. Whilst the tritium storage credentials of Uranium have been rigorously proven at the laboratory scale and at the fusion demonstrator JET for over 30 years, there is a need to prove the concept for depleted uranium hydrogen storage (HyDUS) at scales towards that which is needed to flexibly supply our national power grid with energy. This is exactly the purpose of the HyDUS project, a collaborative venture involving EDF as the interested energy vendor, Urenco as the owner of the waste DU, and the University of Bristol with the UKAEA as the architects of the technology. The team will embark on building and proving the world’s first pilot scale demonstrator of bulk chemical hydrogen storage using depleted Uranium. Within 24 months, the team will attempt to prove both the technical and commercial viability of this technology as a longer duration energy storage solution for the UK. The HyDUS project seeks to enable a true by-product to wonder material story for depleted Uranium, demonstrating that we can think sustainably about unlocking the potential value trapped inside nuclear waste materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogen" title="hydrogen">hydrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=long%20duration%20storage" title=" long duration storage"> long duration storage</a>, <a href="https://publications.waset.org/abstracts/search?q=storage" title=" storage"> storage</a>, <a href="https://publications.waset.org/abstracts/search?q=depleted%20uranium" title=" depleted uranium"> depleted uranium</a>, <a href="https://publications.waset.org/abstracts/search?q=HyDUS" title=" HyDUS"> HyDUS</a> </p> <a href="https://publications.waset.org/abstracts/163475/hydus-project-seeking-a-wonder-material-for-hydrogen-storage" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163475.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">157</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Explore <li><a href="https://waset.org/disciplines">Disciplines</a></li> <li><a href="https://waset.org/conferences">Conferences</a></li> <li><a href="https://waset.org/conference-programs">Conference Program</a></li> <li><a href="https://waset.org/committees">Committees</a></li> <li><a href="https://publications.waset.org">Publications</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Research <li><a href="https://publications.waset.org/abstracts">Abstracts</a></li> <li><a href="https://publications.waset.org">Periodicals</a></li> <li><a href="https://publications.waset.org/archive">Archive</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Open Science <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Philosophy.pdf">Open Science Philosophy</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Science-Award.pdf">Open Science Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Open-Society-Open-Science-and-Open-Innovation.pdf">Open Innovation</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Postdoctoral-Fellowship-Award.pdf">Postdoctoral Fellowship Award</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/Scholarly-Research-Review.pdf">Scholarly Research Review</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Support <li><a href="https://waset.org/page/support">Support</a></li> <li><a href="https://waset.org/profile/messages/create">Contact Us</a></li> <li><a href="https://waset.org/profile/messages/create">Report Abuse</a></li> </ul> </div> </div> </div> </div> </div> <div class="container text-center"> <hr style="margin-top:0;margin-bottom:.3rem;"> <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" class="text-muted small">Creative Commons Attribution 4.0 International License</a> <div id="copy" class="mt-2">© 2024 World Academy of Science, Engineering and Technology</div> </div> </footer> <a href="javascript:" id="return-to-top"><i class="fas fa-arrow-up"></i></a> <div class="modal" id="modal-template"> <div class="modal-dialog"> <div class="modal-content"> <div class="row m-0 mt-1"> <div class="col-md-12"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> </div> </div> <div class="modal-body"></div> </div> </div> </div> <script src="https://cdn.waset.org/static/plugins/jquery-3.3.1.min.js"></script> <script src="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/js/bootstrap.bundle.min.js"></script> <script src="https://cdn.waset.org/static/js/site.js?v=150220211556"></script> <script> jQuery(document).ready(function() { /*jQuery.get("https://publications.waset.org/xhr/user-menu", function (response) { jQuery('#mainNavMenu').append(response); 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