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fluorescent</title> <meta name="description" content="Search results for: fluorescent"> <meta name="keywords" content="fluorescent"> <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 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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="fluorescent"> <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> 255</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: fluorescent</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">255</span> Reflector Arrangement Effect on Ultraviolet Lamp Performance by CFX Simulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=William%20Sidharta">William Sidharta</a>, <a href="https://publications.waset.org/abstracts/search?q=Chin-Tu%20Lu"> Chin-Tu Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorescent ultraviolet lamp generates ultraviolet light which is commonly used in industrial field with certain purposes especially for curing process. Due to the value of inefficiency, there are changes in energy from electrical energy to the heat energy and this would make a defect on the industrial product caused by high temperature of lamp tube during ultraviolet light emission. The condition of industrial scale is further worsening, since commonly using dozens of fluorescent ultraviolet lamps to support huge production process and then it will generates much more heat energy. The maximum temperature of fluorescent ultraviolet lamp will get affected by arranging the lamp tube reflector and this study presents CFX simulation results of the maximum lamp tube temperature with some different reflector arrangements on purely natural convection phenomena. There exists certain spaces value of the reflector and the lamp tube to obtaining lower maximum temperature of the fluorescent ultraviolet lamp. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFX%20simulation" title="CFX simulation">CFX simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20UV%20lamp" title=" fluorescent UV lamp"> fluorescent UV lamp</a>, <a href="https://publications.waset.org/abstracts/search?q=lamp%20tube%20reflector" title=" lamp tube reflector"> lamp tube reflector</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%20light" title=" UV light "> UV light </a> </p> <a href="https://publications.waset.org/abstracts/25442/reflector-arrangement-effect-on-ultraviolet-lamp-performance-by-cfx-simulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25442.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">465</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">254</span> Using Artificial Neural Networks for Optical Imaging of Fluorescent Biomarkers </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20A.%20Laptinskiy">K. A. Laptinskiy</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Burikov"> S. A. Burikov</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Vervald"> A. M. Vervald</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Dolenko"> S. A. Dolenko</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20A.%20Dolenko"> T. A. Dolenko</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The article presents the results of the application of artificial neural networks to separate the fluorescent contribution of nanodiamonds used as biomarkers, adsorbents and carriers of drugs in biomedicine, from a fluorescent background of own biological fluorophores. The principal possibility of solving this problem is shown. Use of neural network architecture let to detect fluorescence of nanodiamonds against the background autofluorescence of egg white with high accuracy - better than 3 ug/ml. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20networks" title="artificial neural networks">artificial neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title=" fluorescence"> fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20aggregation" title=" data aggregation"> data aggregation</a>, <a href="https://publications.waset.org/abstracts/search?q=biomarkers" title=" biomarkers"> biomarkers</a> </p> <a href="https://publications.waset.org/abstracts/14494/using-artificial-neural-networks-for-optical-imaging-of-fluorescent-biomarkers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14494.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">710</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">253</span> Detection of Latent Fingerprints Recovered from Arson Simulation by a Novel Fluorescent Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Somayeh%20Khanjani">Somayeh Khanjani</a>, <a href="https://publications.waset.org/abstracts/search?q=Samaneh%20Nabavi"> Samaneh Nabavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shirin%20Jalili"> Shirin Jalili</a>, <a href="https://publications.waset.org/abstracts/search?q=Afshin%20Khara"> Afshin Khara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fingerprints are area source of ubiquitous evidence and consequential for establishing identity. The detection and subsequent development of fingerprints are thus inevitable in criminal investigations. This becomes a difficult task in the case of certain extreme conditions like fire. A fire scene may be accidental or arson. The evidence subjected to fire is generally overlooked as there is a misconception that they are damaged. There are several scientific approaches to determine whether the fire was deliberate or not. In such as scenario, fingerprints may be most critical to link the perpetrator to the crime. The reason for this may be the destructive nature of fire. Fingerprints subjected to fire are exposed to high temperatures, soot deposition, electromagnetic radiation, and subsequent water force. It is believed that these phenomena damage the fingerprint. A novel fluorescent and a pre existing small particle reagent were investigated for the same. Zinc carbonates based fluorescent small particle reagent was capable of developing latent fingerprints exposed to a maximum temperature of 800 ̊C. Fluorescent SPR may prove very useful in such cases. Fluorescent SPR reagent based on zinc carbonate is a potential method for developing fingerprints from arson sites. The method is cost effective and non hazardous. This formulation is suitable for developing fingerprints exposed to fire/ arson. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fingerprint" title="fingerprint">fingerprint</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20particle%20reagent%20%28SPR%29" title=" small particle reagent (SPR)"> small particle reagent (SPR)</a>, <a href="https://publications.waset.org/abstracts/search?q=arson" title=" arson"> arson</a>, <a href="https://publications.waset.org/abstracts/search?q=novel%20fluorescent" title=" novel fluorescent "> novel fluorescent </a> </p> <a href="https://publications.waset.org/abstracts/28086/detection-of-latent-fingerprints-recovered-from-arson-simulation-by-a-novel-fluorescent-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28086.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">472</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">252</span> The Response of Adaptive Mechanism of Fluorescent Proteins from Coral Species and Target Cell Properties on Signalling Capacity as Biosensor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elif%20Tugce%20Aksun%20Tumerkan">Elif Tugce Aksun Tumerkan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorescent proteins (FPs) have become very popular since green fluorescent protein discovered from crystal jellyfish. It is known that Anthozoa species have a wide range of chromophore organisms, and the initial crystal structure for non-fluorescent chromophores obtained from the reef-building coral has been determined. There are also differently coloured pigments in non-bioluminescent Anthozoa zooxanthellate and azooxanthellate which are frequently members of the GFP-like protein family. The development of fluorescent proteins (FPs) and their applications is an outstanding example of basic science leading to practical biotechnological and medical applications. Fluorescent proteins have several applications in science and are used as important indicators in molecular biology and cell-based research. With rising interest in cell biology, FPs have used as biosensor indicators and probes in pharmacology and cell biology. Using fluorescent proteins in genetically encoded metabolite sensors has many advantages than chemical probes for metabolites such as easily introduced into any cell or organism in any sub-cellular localization and giving chance to fixing to fluoresce of different colours or characteristics. There are different factors effects to signalling mechanism when they used as a biosensor. While there are wide ranges of research have been done on the significance and applications of fluorescent proteins, the cell signalling response of FPs and target cell are less well understood. In this study, it was aimed to clarify the response of adaptive mechanisms of coral species such as pH, temperature and symbiotic relationship and target cells properties on the signalling capacity. Corals are a rich natural source of fluorescent proteins that change with environmental conditions such as light, heat stress and injury. Adaptation mechanism of coral species to these types of environmental variations is important factor due to FPs properties have affected by this mechanism. Since fluorescent proteins obtained from nature, their own ecological property like the symbiotic relationship is observed very commonly in coral species and living conditions have the impact on FPs efficiency. Target cell properties also have an effect on signalling and visualization. The dynamicity of detector that used for reading fluorescence and the level of background fluorescence are key parameters for the quality of the fluorescent signal. Among the factors, it can be concluded that coral species adaptive characteristics have the strongest effect on FPs signalling capacity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosensor" title="biosensor">biosensor</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20biology" title=" cell biology"> cell biology</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20conditions" title=" environmental conditions"> environmental conditions</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20protein" title=" fluorescent protein"> fluorescent protein</a>, <a href="https://publications.waset.org/abstracts/search?q=sea%20anemone" title=" sea anemone"> sea anemone</a> </p> <a href="https://publications.waset.org/abstracts/94010/the-response-of-adaptive-mechanism-of-fluorescent-proteins-from-coral-species-and-target-cell-properties-on-signalling-capacity-as-biosensor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94010.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">170</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">251</span> Plasma Properties Effect on Fluorescent Tube Plasma Antenna Performance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20N.%20Dagang">A. N. Dagang</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20I.%20Ismail"> E. I. Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Zakaria"> Z. Zakaria</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the analysis on the performance of monopole antenna with fluorescent tubes. In this research, the simulation and experimental approach is conducted. The fluorescent tube with different length and size is designed using Computer Simulation Technology (CST) software and the characteristics of antenna parameter are simulated throughout the software. CST was used to simulate antenna parameters such as return loss, resonant frequency, gain and directivity. Vector Network Analyzer (VNA) was used to measure the return loss of plasma antenna in order to validate the simulation results. In the simulation and experiment, the supply frequency is set starting from 1 GHz to 10 GHz. The results show that the return loss of plasma antenna changes when size of fluorescent tubes is varied, correspond to the different plasma properties. It shows that different values of plasma properties such as plasma frequency and collision frequency gives difference result of return loss, gain and directivity. For the gain, the values range from 2.14 dB to 2.36 dB. The return loss of plasma antenna offers higher value range from -22.187 dB to -32.903 dB. The higher the values of plasma frequency and collision frequency, the higher return loss can be obtained. The values obtained are comparative to the conventional type of metal antenna. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plasma%20antenna" title="plasma antenna">plasma antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20tube" title=" fluorescent tube"> fluorescent tube</a>, <a href="https://publications.waset.org/abstracts/search?q=CST" title=" CST"> CST</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20parameters" title=" plasma parameters"> plasma parameters</a> </p> <a href="https://publications.waset.org/abstracts/52421/plasma-properties-effect-on-fluorescent-tube-plasma-antenna-performance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52421.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">387</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">250</span> Advanced Real-Time Fluorescence Imaging System for Rat's Femoral Vein Thrombosis Monitoring</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sang%20Hun%20Park">Sang Hun Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Chul%20Gyu%20Song"> Chul Gyu Song</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Artery and vein occlusion changes observed in patients and experimental animals are unexplainable symptoms. As the fat accumulated in cardiovascular ruptures, it causes vascular blocking. Likewise, early detection of cardiovascular disease can be useful for treatment. In this study, we used the mouse femoral occlusion model to observe the arterial and venous occlusion changes without darkroom. We observed the femoral arterial flow pattern changes by proposed fluorescent imaging system using an animal model of thrombosis. We adjusted the near-infrared light source current in order to control the intensity of the fluorescent substance light. We got the clear fluorescent images and femoral artery flow pattern were measured by a 5-minute interval. The result showed that the fluorescent substance flowing in the femoral arteries were accumulated in thrombus as time passed, and the fluorescence of other vessels gradually decreased. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thrombus" title="thrombus">thrombus</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title=" fluorescence"> fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=femoral" title=" femoral"> femoral</a>, <a href="https://publications.waset.org/abstracts/search?q=arteries" title=" arteries"> arteries</a> </p> <a href="https://publications.waset.org/abstracts/40585/advanced-real-time-fluorescence-imaging-system-for-rats-femoral-vein-thrombosis-monitoring" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40585.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">344</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">249</span> Developing A Novel Fluorescent Sensor For Detecting Analytes In An Aqueous Medium</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Varshith%20Kotagiri">Varshith Kotagiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Li"> Lei Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorescent sensors are organic fluorophores that detect specific analytes with quantitative fluorescence intensity changes. They have offered impressive benefits compared with instrumental techniques, such as low cost, high selectivity, and rapid responses. One issue that limits the fluorescent sensors for further application is their poor solubility in the aqueous medium, where most targeted analytes, including metal ions, inorganic anions, and neutral biomolecules, are readily soluble. When fluorescent sensors are utilized to detect these analytes, a heterogeneous phase is formed. In most cases, an extra water-miscible organic solvent is needed as an additive to facilitate the sensing process, which complicates the measurement operations and produces more organic waste. We aim to resolve this issue by skillful molecular design to introduce a hydrophilic side chain to the fluorescent sensor, increasing its water solubility and facilitating its sensing process to analytes, like various protons, fluoride ions, and copper ions, in an aqueous medium. Simultaneously, its sensitivity and selectivity will be retained. This work will simplify the sensing operations and reduce the amount of organic waste produced during the measurement. This strategy will additionally be of broad interest to the chemistry community, as it introduces the idea of modifying the molecular structure to apply an initial hydrophobic compound under hydrophilic conditions in a feasible way. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20fluorescent%20sensor" title="organic fluorescent sensor">organic fluorescent sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=analytes" title=" analytes"> analytes</a>, <a href="https://publications.waset.org/abstracts/search?q=sensing" title=" sensing"> sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=aqueous%20medium" title=" aqueous medium"> aqueous medium</a>, <a href="https://publications.waset.org/abstracts/search?q=phenanthroimidazole" title=" phenanthroimidazole"> phenanthroimidazole</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrophilic%20side%20chain" title=" hydrophilic side chain"> hydrophilic side chain</a> </p> <a href="https://publications.waset.org/abstracts/195039/developing-a-novel-fluorescent-sensor-for-detecting-analytes-in-an-aqueous-medium" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/195039.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">2</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">248</span> Fluorescent Imaging with Hoechst 34580 and Propidium Iodide in Determination of Toxic Changes of Cyanobacterial Oligopeptides in Rotifers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adam%20Bownik">Adam Bownik</a>, <a href="https://publications.waset.org/abstracts/search?q=Ma%C5%82gorzata%20Adamczuk"> Małgorzata Adamczuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Barbara%20Pawlik-Skowro%C5%84ska"> Barbara Pawlik-Skowrońska</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Certain strains of cyanobacteria, microorganisms forming water blooms, produce toxic secondary metabolites. Although various effects of cyanotoxins in aquatic animals are known, little data can be found on the influence of some cyanobacterial oligopeptides beyond microcystins. The aim of the present study was to determine the toxicity of novel pure cyanobacterial oligopeptides: microginin FR-1 (MGFR1) and anabaenopeptin-A (ANA-A) on a transparent model rotifer Brachionus calyciflorus with the use of fluorescent double staining with Hoechst 34580 and propidium iodide. The obtained results showed that both studied oligopeptides decreased the fluorescence intensity of animals stained with Hoechst 34580 in a concentration-dependent manner. On the other hand, a concentration-dependent increase of propidium iodide fluorescence was noted in the exposed rotifers. The results suggest that MGFR-1 and ANA-A should be considered as a potent toxic agent to freshwater rotifers, and fluorescent staining with Hoechst and propidium iodide may be a valuable tool for determination of toxicity of cyanobacterial oligopeptides in rotifers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyanobacteria" title="cyanobacteria">cyanobacteria</a>, <a href="https://publications.waset.org/abstracts/search?q=brachionus" title=" brachionus"> brachionus</a>, <a href="https://publications.waset.org/abstracts/search?q=oligopeptides" title=" oligopeptides"> oligopeptides</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20staining" title=" fluorescent staining"> fluorescent staining</a>, <a href="https://publications.waset.org/abstracts/search?q=hoechst" title=" hoechst"> hoechst</a>, <a href="https://publications.waset.org/abstracts/search?q=propidium%20iodide" title=" propidium iodide"> propidium iodide</a> </p> <a href="https://publications.waset.org/abstracts/146637/fluorescent-imaging-with-hoechst-34580-and-propidium-iodide-in-determination-of-toxic-changes-of-cyanobacterial-oligopeptides-in-rotifers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146637.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">129</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">247</span> CdS Quantum Dots as Fluorescent Probes for Detection of Naphthalene</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhengyu%20Yan">Zhengyu Yan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yan%20Yu"> Yan Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Jianqiu%20Chen"> Jianqiu Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A novel sensing system has been designed for naphthalene detection based on the quenched fluorescence signal of CdS quantum dots. The fluorescence intensity of the system reduced significantly after adding CdS quantum dots to the water pollution model because of the fluorescent static quenching f mechanism. Herein, we have demonstrated the facile methodology can offer a convenient and low analysis cost with the recovery rate as 97.43%-103.2%, which has potential application prospect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CdS%20quantum%20dots" title="CdS quantum dots">CdS quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=modification" title=" modification"> modification</a>, <a href="https://publications.waset.org/abstracts/search?q=detection" title=" detection"> detection</a>, <a href="https://publications.waset.org/abstracts/search?q=naphthalene" title=" naphthalene"> naphthalene</a> </p> <a href="https://publications.waset.org/abstracts/10172/cds-quantum-dots-as-fluorescent-probes-for-detection-of-naphthalene" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10172.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">493</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">246</span> Selection of Green Fluorescent Protein and mCherry Nanobodies Using the Yeast Surface Display Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lavinia%20Ruta">Lavinia Ruta</a>, <a href="https://publications.waset.org/abstracts/search?q=Ileana%20Farcasanu"> Ileana Farcasanu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The yeast surface display (YSD) technique enables the expression of proteins on yeast cell surfaces, facilitating the identification and isolation of proteins with targeted binding properties, such as nanobodies. Nanobodies, derived from camelid species, are single-domain antibody fragments renowned for their high affinity and specificity towards target proteins, making them valuable in research and potentially in therapeutics. Their advantages include a compact size (~15 kDa), robust stability, and the ability to target challenging epitopes. The project endeavors to establish and validate a platform for producing Green Fluorescent Protein (GFP) and mCherry nanobodies using the yeast surface display method. mCherry, a prevalent red fluorescent protein sourced from coral species, is commonly utilized as a genetic marker in biological studies due to its vibrant red fluorescence. The GFP-nanobody, a single variable domain of heavy-chain antibodies (VHH), exhibits specific binding to GFP, offering a potent means for isolating and engineering fluorescent protein fusions across various biological research domains. Both GFP and mCherry nanobodies find specific utility in cellular imaging and protein analysis applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=YSD" title="YSD">YSD</a>, <a href="https://publications.waset.org/abstracts/search?q=nanobodies" title=" nanobodies"> nanobodies</a>, <a href="https://publications.waset.org/abstracts/search?q=GFP" title=" GFP"> GFP</a>, <a href="https://publications.waset.org/abstracts/search?q=Saccharomyces%20cerevisiae" title=" Saccharomyces cerevisiae"> Saccharomyces cerevisiae</a> </p> <a href="https://publications.waset.org/abstracts/184472/selection-of-green-fluorescent-protein-and-mcherry-nanobodies-using-the-yeast-surface-display-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184472.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">61</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">245</span> Study of Aerosol Deposition and Shielding Effects on Fluorescent Imaging Quantitative Evaluation in Protective Equipment Validation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shinhao%20Yang">Shinhao Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsiao-Chien%20Huang"> Hsiao-Chien Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chin-Hsiang%20Luo"> Chin-Hsiang Luo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The leakage of protective clothing is an important issue in the occupational health field. There is no quantitative method for measuring the leakage of personal protective equipment. This work aims to measure the quantitative leakage of the personal protective equipment by using the fluorochrome aerosol tracer. The fluorescent aerosols were employed as airborne particulates in a controlled chamber with ultraviolet (UV) light-detectable stickers. After an exposure-and-leakage test, the protective equipment was removed and photographed with UV-scanning to evaluate areas, color depth ratio, and aerosol deposition and shielding effects of the areas where fluorescent aerosols had adhered to the body through the protective equipment. Thus, this work built a calculation software for quantitative leakage ratio of protective clothing based on fluorescent illumination depth/aerosol concentration ratio, illumination/Fa ratio, aerosol deposition and shielding effects, and the leakage area ratio on the segmentation. The results indicated that the two-repetition total leakage rate of the X, Y, and Z type protective clothing for subject T were about 3.05, 4.21, and 3.52 (mg/m2). For five-repetition, the leakage rate of T were about 4.12, 4.52, and 5.11 (mg/m2). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluorochrome" title="fluorochrome">fluorochrome</a>, <a href="https://publications.waset.org/abstracts/search?q=deposition" title=" deposition"> deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=shielding%20effects" title=" shielding effects"> shielding effects</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20image%20processing" title=" digital image processing"> digital image processing</a>, <a href="https://publications.waset.org/abstracts/search?q=leakage%20ratio" title=" leakage ratio"> leakage ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=personal%20protective%20equipment" title=" personal protective equipment"> personal protective equipment</a> </p> <a href="https://publications.waset.org/abstracts/43218/study-of-aerosol-deposition-and-shielding-effects-on-fluorescent-imaging-quantitative-evaluation-in-protective-equipment-validation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43218.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">322</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">244</span> Novel Fluorescent High Density Polyethylene Composites for Fused Deposition Modeling 3D Printing in Packaging Security Features</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Youssef%20R.%20Hassan">Youssef R. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20S.%20Hasanin"> Mohamed S. Hasanin</a>, <a href="https://publications.waset.org/abstracts/search?q=Reda%20M.%20Abdelhameed"> Reda M. Abdelhameed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, innovations in packaging security features become more important to see the originality of packaging in industrial application. Luminescent 3d printing materials have been a promising property which can provides a unique opportunity for the design and application of 3D printing. Lack emission of terbium ions, as a source of green emission, in salt form prevent its uses in industrial applications, so searching about stable and highly emitter material become essential. Nowadays, metal organic frameworks (MOFs) play an important role in designing light emitter material. In this work, fluorescent high density polyethylene (FHDPE) composite filament with Tb-benzene 1,3,5-tricarboxylate (Tb-BTC) MOFs for 3D printing have been successfully developed.HDPE pellets were mixed with Tb-BTC and melting extrustion with single screw extruders. It was found that Tb-BTCuniformly dispersed in the HDPE matrix and significantly increased the crystallinity of PE, which not only maintained the good thermal property but also improved the mechanical properties of Tb-BTC@HDPE composites. Notably, the composite filaments emitted ultra-bright green light under UV lamp, and the fluorescence intensity increased as the content of Tb-BTC increased. Finally, several brightly luminescent exquisite articles could be manufactured by fused deposition modeling (FDM) 3D printer with these new fluorescent filaments. In this context, the development of novel fluorescent Tb-BTC@HDPE composites was combined with 3D printing technology to amplified the packaging Security Features. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=3D%20printing" title="3D printing">3D printing</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent" title=" fluorescent"> fluorescent</a>, <a href="https://publications.waset.org/abstracts/search?q=packaging" title=" packaging"> packaging</a>, <a href="https://publications.waset.org/abstracts/search?q=security" title=" security"> security</a> </p> <a href="https://publications.waset.org/abstracts/158294/novel-fluorescent-high-density-polyethylene-composites-for-fused-deposition-modeling-3d-printing-in-packaging-security-features" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158294.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">101</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">243</span> A Turn-on Fluorescent Sensor for Pb(II)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ece%20K%C3%B6k%20Yetimo%C4%9Flu">Ece Kök Yetimoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=Soner%20%C3%87ubuk"> Soner Çubuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Ne%C5%9Fe%20Ta%C5%9Fci"> Neşe Taşci</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Vezir%20Kahraman"> M. Vezir Kahraman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lead(II) is one of the most toxic environmental pollutants in the world, due to its high toxicity and non-biodegradability. Lead exposure causes severe risks to human health such as central brain damages, convulsions, kidney damages, and even death. To determine lead(II) in environmental or biological samples, scientists use atomic absorption spectrometry (AAS), inductively coupled plasma mass spectrometry (ICPMS), fluorescence spectrometry and electrochemical techniques. Among these systems the fluorescence spectrometry and fluorescent chemical sensors have attracted considerable attention because of their good selectivity and high sensitivity. The fluorescent polymers usually contain covalently bonded fluorophores. In this study imidazole based UV cured polymeric film was prepared and designed to act as a fluorescence chemo sensor for lead (II) analysis. The optimum conditions such as influence of pH value and time on the fluorescence intensity of the sensor have also been investigated. The sensor was highly sensitive with a detection limit as low as 1.87 × 10−8 mol L-1 and it was successful in the determination of Pb(II) in water samples. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title="fluorescence">fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=lead%28II%29" title=" lead(II)"> lead(II)</a>, <a href="https://publications.waset.org/abstracts/search?q=photopolymerization" title=" photopolymerization"> photopolymerization</a>, <a href="https://publications.waset.org/abstracts/search?q=polymeric%20sensor" title=" polymeric sensor"> polymeric sensor</a> </p> <a href="https://publications.waset.org/abstracts/46887/a-turn-on-fluorescent-sensor-for-pbii" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46887.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">671</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">242</span> Functionalization of Carbon-Coated Iron Nanoparticles with Fluorescent Protein</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20G.%20Pershina">A. G. Pershina</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20S.%20Postnikov"> P. S. Postnikov</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20E.%20Trusova"> M. E. Trusova</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20O.%20Burlakova"> D. O. Burlakova</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20E.%20Sazonov"> A. E. Sazonov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Invention of magnetic-fluorescent nanocomposites is a rapidly developing area of research. The magnetic-fluorescent nanocomposite attractiveness is connected with the ability of simultaneous management and control of such nanocomposites by two independent methods based on different physical principles. These nanocomposites are applied for the solution of various essential scientific and experimental biomedical problems. The aim of this research is development of principle approach to nanobiohybrid structures with magnetic and fluorescent properties design. The surface of carbon-coated iron nanoparticles (Fe@C) were covalently modified by 4-carboxy benzenediazonium tosylate. Recombinant fluorescent protein TagGFP2 (Eurogen) was obtained in E. coli (Rosetta DE3) by standard laboratory techniques. Immobilization of TagGFP2 on the nanoparticles surface was provided by the carbodiimide activation. The amount of COOH-groups on the nanoparticle surface was estimated by elemental analysis (Elementar Vario Macro) and TGA-analysis (SDT Q600, TA Instruments. Obtained nanocomposites were analyzed by FTIR spectroscopy (Nicolet Thermo 5700) and fluorescence microscopy (AxioImager M1, Carl Zeiss). Amount of the protein immobilized on the modified nanoparticle surface was determined by fluorimetry (Cary Eclipse) and spectrophotometry (Unico 2800) with the help of preliminary obtained calibration plots. In the FTIR spectra of modified nanoparticles the adsorption band of –COOH group around 1700 cm-1 and bands in the region of 450-850 cm-1 caused by bending vibrations of benzene ring were observed. The calculated quantity of active groups on the surface was equal to 0,1 mmol/g of material. The carbodiimide activation of COOH-groups on nanoparticles surface results to covalent immobilization of TagGFP2 fluorescent protein (0.2 nmol/mg). The success of immobilization was proved by FTIR spectroscopy. Protein characteristic adsorption bands in the region of 1500-1600 cm-1 (amide I) were presented in the FTIR spectrum of nanocomposite. The fluorescence microscopy analysis shows that Fe@C-TagGFP2 nanocomposite possesses fluorescence properties. This fact confirms that TagGFP2 protein retains its conformation due to immobilization on nanoparticles surface. Magnetic-fluorescent nanocomposite was obtained as a result of unique design solution implementation – the fluorescent protein molecules were fixed to the surface of superparamagnetic carbon-coated iron nanoparticles using original diazonium salts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon-coated%20iron%20nanoparticles" title="carbon-coated iron nanoparticles">carbon-coated iron nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=diazonium%20salts" title=" diazonium salts"> diazonium salts</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20protein" title=" fluorescent protein"> fluorescent protein</a>, <a href="https://publications.waset.org/abstracts/search?q=immobilization" title=" immobilization"> immobilization</a> </p> <a href="https://publications.waset.org/abstracts/7691/functionalization-of-carbon-coated-iron-nanoparticles-with-fluorescent-protein" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7691.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">342</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">241</span> Development of Micelle-Mediated Sr(II) Fluorescent Analysis System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Akutsu">K. Akutsu</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Mori"> S. Mori</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Hanashima"> T. Hanashima</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorescent probes are useful for the selective detection of trace amount of ions and biomolecular imaging in living cells. Various kinds of metal ion-selective fluorescent compounds have been developed, and some compounds have been applied as effective metal ion-selective fluorescent probes. However, because competition between the ligand and water molecules for the metal ion constitutes a major contribution to the stability of a complex in aqueous solution, it is difficult to develop a highly sensitive, selective, and stable fluorescent probe in aqueous solution. The micelles, these are formed in the surfactant aqueous solution, provides a unique hydrophobic nano-environment for stabilizing metal-organic complexes in aqueous solution. Therefore, we focused on the unique properties of micelles to develop a new fluorescence analysis system. We have been developed a fluorescence analysis system for Sr(II) by using a Sr(II) fluorescent sensor, N-(2-hydroxy-3-(1H-benzimidazol-2-yl)-phenyl)-1-aza-18-crown-6-ether (BIC), and studied its complexation behavior with Sr(II) in micellar solution. We revealed that the stability constant of Sr(II)-BIC complex was 10 times higher than that in aqueous solution. In addition, its detection limit value was also improved up to 300 times by this system. However, the mechanisms of these phenomena have remained obscure. In this study, we investigated the structure of Sr(II)-BIC complex in aqueous micellar solution by combining use the extended X-ray absorption fine structure (EXAFS) and neutron reflectivity (NR) method to understand the unique properties of the fluorescence analysis system from the view point of structural chemistry. EXAFS and NR experiments were performed on BL-27B at KEK-PF and on BL17 SHARAKU at J-PARC MLF, respectively. The obtained EXAFS spectra and their fitting results indicated that Sr(II) and BIC formed a Sr(18-crown-6-ether)-like complex in aqueous micellar solution. The EXAFS results also indicated that the hydrophilic head group of surfactant molecule was directly coordinated with Sr(II). In addition, the NR results also indicated that Sr(II)-BIC complex would interact with the surface of micelle molecules. Therefore, we concluded that Sr(II), BIC, and surfactant molecule formed a ternary complexes in aqueous micellar solution, and at least, it is clear that the improvement of the stability constant in micellar solution is attributed to the result of the formation of Sr(BIC)(surfactant) complex. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=micell" title="micell">micell</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20probe" title=" fluorescent probe"> fluorescent probe</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20reflectivity" title=" neutron reflectivity"> neutron reflectivity</a>, <a href="https://publications.waset.org/abstracts/search?q=EXAFS" title=" EXAFS"> EXAFS</a> </p> <a href="https://publications.waset.org/abstracts/79352/development-of-micelle-mediated-srii-fluorescent-analysis-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79352.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">183</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">240</span> Applications of Copper Sensitive Fluorescent Dye to the Studies of the Role of Copper in Cisplatin Resistance in Human Cancer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sumayah%20Mohammed%20Asiri%20A.">Sumayah Mohammed Asiri A.</a>, <a href="https://publications.waset.org/abstracts/search?q=Aviva%20Levina%20B."> Aviva Levina B.</a>, <a href="https://publications.waset.org/abstracts/search?q=Elizabeth%20New%20C."> Elizabeth New C.</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Lay%20D."> Peter Lay D.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pt compounds have been among the most successful anticancer drugs in the last 40 years, but the development of resistance to them is an increasing problem. Cellular homeostasis of an essential metal, Cu, is known to be involved in Pt resistance, but mechanisms of this process are poorly understood. We used a novel ratiometric Cu(I)-sensitive fluorescent probeInCCu1 dye to detect Cu(I) in the mitochondria. Total Cu and labile Cu pool measured using AAS and InCCu1 dye in A2780 cells and their corresponding resistant cells A2780-cis.R cells treated with Cu and cisplatin. The main difference between both cell lines in the presence and absence of Cu(II) is that resistant cells have lower total Cu content but higher labile Cu levels than cisplatin-sensitive cells. This means that resistant cells can metabolize and export excess Cu more efficiently. Furthermore, InCCu1 has emerged not only as an indicator of labile cellular Cu levels in the mitochondria but as a potentially versatile multi-organelle probe. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AAS%20and%20ICPMS" title="AAS and ICPMS">AAS and ICPMS</a>, <a href="https://publications.waset.org/abstracts/search?q=A2780%20and%20its%20resistant%20cells" title=" A2780 and its resistant cells"> A2780 and its resistant cells</a>, <a href="https://publications.waset.org/abstracts/search?q=ratiometric%20fluorescent%20sensors" title=" ratiometric fluorescent sensors"> ratiometric fluorescent sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=inCCu1" title=" inCCu1"> inCCu1</a>, <a href="https://publications.waset.org/abstracts/search?q=and%20total%20and%20labile%20Cu" title=" and total and labile Cu"> and total and labile Cu</a> </p> <a href="https://publications.waset.org/abstracts/144346/applications-of-copper-sensitive-fluorescent-dye-to-the-studies-of-the-role-of-copper-in-cisplatin-resistance-in-human-cancer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144346.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">213</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">239</span> One-Step Synthesis of Fluorescent Carbon Dots in a Green Way as Effective Fluorescent Probes for Detection of Iron Ions and pH Value</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Ghasemi">Mostafa Ghasemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20Urquhart"> Andrew Urquhart</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, fluorescent carbon dots (CDs) were synthesized in a green way using a one-step hydrothermal method. Carbon dots are carbon-based nanomaterials with a size of less than 10 nm, unique structure, and excellent properties such as low toxicity, good biocompatibility, tunable fluorescence, excellent photostability, and easy functionalization. These properties make them a good candidate to use in different fields such as biological sensing, photocatalysis, photodynamic, and drug delivery. Fourier transformed infrared (FTIR) spectra approved OH/NH groups on the surface of the as-synthesized CDs, and UV-vis spectra showed excellent fluorescence quenching effect of Fe (III) ion on the as-synthesized CDs with high selectivity detection compared with other metal ions. The probe showed a linear response concentration range (0–2.0 mM) to Fe (III) ion, and the limit of detection was calculated to be about 0.50 μM. In addition, CDs also showed good sensitivity to the pH value in the range from 2 to 14, indicating great potential as a pH sensor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20dots" title="carbon dots">carbon dots</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title=" fluorescence"> fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=pH%20sensing" title=" pH sensing"> pH sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20ions%20sensor" title=" metal ions sensor"> metal ions sensor</a> </p> <a href="https://publications.waset.org/abstracts/176075/one-step-synthesis-of-fluorescent-carbon-dots-in-a-green-way-as-effective-fluorescent-probes-for-detection-of-iron-ions-and-ph-value" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176075.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">75</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">238</span> Gene Expression and Staining Agents: Exploring the Factors That Influence the Electrophoretic Properties of Fluorescent Proteins</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elif%20Tugce%20Aksun%20Tumerkan">Elif Tugce Aksun Tumerkan</a>, <a href="https://publications.waset.org/abstracts/search?q=Chris%20Lowe"> Chris Lowe</a>, <a href="https://publications.waset.org/abstracts/search?q=Hannah%20Krupa"> Hannah Krupa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorescent proteins are self-sufficient in forming chromophores with a visible wavelength from 3 amino acids sequence within their own polypeptide structure. This chromophore – a molecule that absorbs a photon of light and exhibits an energy transition equal to the energy of the absorbed photon. Fluorescent proteins (FPs) consisted of a chain of 238 amino acid residues and composed of 11 beta strands shaped in a cylinder surrounding an alpha helix structure. A better understanding of the system of the chromospheres and the increasing advance in protein engineering in recent years, the properties of FPs offers the potential for new applications. They have used sensors and probes in molecular biology and cell-based research that giving a chance to observe these FPs tagged cell localization, structural variation and movement. For clarifying functional uses of fluorescent proteins, electrophoretic properties of these proteins are one of the most important parameters. Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis is used for determining electrophoretic properties commonly. While there are many techniques are used for determining the functionality of protein-based research, SDS-PAGE analysis can only provide a molecular level assessment of the proteolytic fragments. Before SDS-PAGE analysis, fluorescent proteins need to successfully purified. Due to directly purification of the target, FPs is difficult from the animal, gene expression is commonly used which must be done by transformation with the plasmid. Furthermore, used gel within electrophoresis and staining agents properties have a key role. In this review, the different factors that have the impact on the electrophoretic properties of fluorescent proteins explored. Fluorescent protein separation and purification are the essential steps before electrophoresis that should be done very carefully. For protein purification, gene expression process and following steps have a significant function. For successful gene expression, the properties of selected bacteria for expression, used plasmid are essential. Each bacteria has own characteristics which are very sensitive to gene expression, also used procedure is the important factor for fluorescent protein expression. Another important factors are gel formula and used staining agents. Gel formula has an effect on the specific proteins mobilization and staining with correct agents is a key step for visualization of electrophoretic bands of protein. Visuality of proteins can be changed depending on staining reagents. Apparently, this review has emphasized that gene expression and purification have a stronger effect than electrophoresis protocol and staining agents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cell%20biology" title="cell biology">cell biology</a>, <a href="https://publications.waset.org/abstracts/search?q=gene%20expression" title=" gene expression"> gene expression</a>, <a href="https://publications.waset.org/abstracts/search?q=staining%20agents" title=" staining agents"> staining agents</a>, <a href="https://publications.waset.org/abstracts/search?q=SDS-page" title=" SDS-page"> SDS-page</a> </p> <a href="https://publications.waset.org/abstracts/94082/gene-expression-and-staining-agents-exploring-the-factors-that-influence-the-electrophoretic-properties-of-fluorescent-proteins" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94082.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">194</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">237</span> Assessment of Green Fluorescent Protein Signal for Effective Monitoring of Recombinant Fermentation Processes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Sani">I. Sani</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Abdulhamid"> A. Abdulhamid</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Bello"> F. Bello</a>, <a href="https://publications.waset.org/abstracts/search?q=Isah%20M.%20Fakai"> Isah M. Fakai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research has focused on the application of green fluorescent protein (GFP) as a new technique for direct monitoring of fermentation processes involving cultured bacteria. To use GFP as a sensor for pH and oxygen, percentage ratio of red fluorescence to green (% R/G) was evaluated. Assessing the magnitude of the % R/G ratio in relation to low or high pH and oxygen concentration, the bacterial strains were cultivated under aerobic and anaerobic conditions. SCC1 strains of E. coli were grown in a 5 L laboratory fermenter, and during the fermentation, the pH and temperature were controlled at 7.0 and 370C respectively. Dissolved oxygen tension (DOT) was controlled between 15-100% by changing the agitation speed between 20-500 rpm respectively. Effect of reducing the DOT level from 100% to 15% was observed after 4.5 h fermentation. There was a growth arrest as indicated by the decrease in the OD650 at this time (4.5-5 h). The relative fluorescence (green) intensity was decreased from about 460 to 420 RFU. However, %R/G ratio was significantly increased from about 0.1% to about 0.25% when the DOT level was decreased to 15%. But when the DOT was changed to 100%, a little increase in the RF and decrease in the %R/G ratio were observed. Therefore, GFP can effectively detect and indicate any change in pH and oxygen level during fermentation processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Escherichia%20coli%20SCC1" title="Escherichia coli SCC1">Escherichia coli SCC1</a>, <a href="https://publications.waset.org/abstracts/search?q=fermentation%20process" title=" fermentation process"> fermentation process</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20fluorescent%20protein" title=" green fluorescent protein"> green fluorescent protein</a>, <a href="https://publications.waset.org/abstracts/search?q=red%20fluorescence" title=" red fluorescence"> red fluorescence</a> </p> <a href="https://publications.waset.org/abstracts/17962/assessment-of-green-fluorescent-protein-signal-for-effective-monitoring-of-recombinant-fermentation-processes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17962.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">505</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">236</span> Fluorescence Gold Nanoparticles: Sensing Properties and Cytotoxicity Studies in MCF-7 Human Breast Cancer Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cristina%20N%C3%BA%C3%B1ez">Cristina Núñez</a>, <a href="https://publications.waset.org/abstracts/search?q=Rufina%20Bastida"> Rufina Bastida</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20Labisbal"> Elena Labisbal</a>, <a href="https://publications.waset.org/abstracts/search?q=Alejandro%20Mac%C3%ADas"> Alejandro Macías</a>, <a href="https://publications.waset.org/abstracts/search?q=Mar%C3%ADa%20T.%20Pereira"> María T. Pereira</a>, <a href="https://publications.waset.org/abstracts/search?q=Jos%C3%A9%20M.%20Vila"> José M. Vila</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A highly selective quinoline-based fluorescent sensor L was designed in order to functionalize gold nanoparticles (GNPs@L). The cytotoxicity of compound L and GNPs@L on the MCF-7 breast cancer cells was explored and it was observed that L and GNPs@L compounds induced apoptosis in MCF-7 cancer cells. The cellular uptake of the hybrid system GNPs@L was studied using confocal laser scanning microscopy (CLSM). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title="cytotoxicity">cytotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20probes" title=" fluorescent probes"> fluorescent probes</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=quinoline" title=" quinoline"> quinoline</a> </p> <a href="https://publications.waset.org/abstracts/56138/fluorescence-gold-nanoparticles-sensing-properties-and-cytotoxicity-studies-in-mcf-7-human-breast-cancer-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56138.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">382</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">235</span> Fluorescent Analysis of Gold Nanoclusters-Wool Keratin Addition to Copper Ions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yao%20Xing">Yao Xing</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong%20Ling%20Liu"> Hong Ling Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Dong%20Yu"> Wei Dong Yu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the increase of global population, it is of importance for the safe water supply, while, the water-monitoring method with the capability of rapidness, low-cost, green and robustness remains unsolved. In this paper, gold nanoclusters-wool keratin is added into copper ions measured by fluorescent method in order to probe copper ions in aqueous solution. The fluorescent results show that gold nanoclusters-wool keratin exhibits high stability of pHs, while it is sensitive to temperature and time. Based on Gauss fitting method, the results exhibit that the slope of gold nanoclusters-wool keratin with pH resolution under acidic condition is higher compared to it under alkaline solutions. Besides, gold nanoclusters-wool keratin added into copper ions shows a fluorescence turn-off response transferring from red to blue under UV light, leading to the dramatically decreased fluorescent intensity of gold nanoclusters-wool keratin solution located at 690 nm. Moreover, the limited concentration of copper ions tested by gold nanoclusters-wool keratin system is around 1 µmol/L, which meets the need of detection standards. The fitting slope of Stern-Volmer plot at low concentration of copper ions is larger than it at high concentrations, which indicates that aggregated gold nanoclusters are from small amounts to large numbers with the increasing concentration of copper ions. It is expected to provide novel method and materials for copper ions testing with low cost, high efficiency, and easy operability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gold%20nanoclusters" title="gold nanoclusters">gold nanoclusters</a>, <a href="https://publications.waset.org/abstracts/search?q=copper%20ions" title=" copper ions"> copper ions</a>, <a href="https://publications.waset.org/abstracts/search?q=wool%20keratin" title=" wool keratin"> wool keratin</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title=" fluorescence"> fluorescence</a> </p> <a href="https://publications.waset.org/abstracts/87828/fluorescent-analysis-of-gold-nanoclusters-wool-keratin-addition-to-copper-ions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87828.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">252</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">234</span> Evaluation of Real Time PCR Methods for Food Safety</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ergun%20Sakalar">Ergun Sakalar</a>, <a href="https://publications.waset.org/abstracts/search?q=Kubra%20Bilgic"> Kubra Bilgic</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the last decades, real-time PCR has become a reliable tool preferred to use in many laboratories for pathogen detection. This technique allows for monitoring target amplification via fluorescent molecules besides admit of quantitative analysis by enabling of convert outcomes of thermal cycling to digital data. Sensitivity and traceability of real-time PCR are based on measuring of fluorescence that appears only when fluorescent reporter dye bound to specific target DNA.The fluorescent reporter systems developed for this purpose are divided into two groups. The first group consists of intercalator fluorescence dyes such as SYBR Green, EvaGreen which binds to double-stranded DNA. On the other hand, the second group includes fluorophore-labeled oligonucleotide probes that are separated into three subgroups due to differences in mechanism of action; initial primer-probes such as Cyclicons, Angler®, Amplifluor®, LUX™, Scorpions, and the second one hydrolysis probes like TaqMan, Snake assay, finally hybridization probes, for instance, Molecular Beacons, Hybprobe/FRET, HyBeacon™, MGB-Eclipse, ResonSense®, Yin-Yang, MGB-Pleiades. In addition nucleic acid analogues, an increase of probe affinity to target site is also employed with fluorescence-labeled probes. Consequently, abundant real-time PCR detection chemistries are chosen by researcher according to the field of application, mechanism of action, advantages, and proper structures of primer/probes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20dye" title="fluorescent dye">fluorescent dye</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20safety" title=" food safety"> food safety</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20probes" title=" molecular probes"> molecular probes</a>, <a href="https://publications.waset.org/abstracts/search?q=nucleic%20acid%20analogues" title=" nucleic acid analogues"> nucleic acid analogues</a> </p> <a href="https://publications.waset.org/abstracts/53082/evaluation-of-real-time-pcr-methods-for-food-safety" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53082.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">256</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">233</span> Preparation of Metal Containing Epoxy Polymer and Investigation of Their Properties as Fluorescent Probe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ertu%C4%9F%20Y%C4%B1ld%C4%B1r%C4%B1m">Ertuğ Yıldırım</a>, <a href="https://publications.waset.org/abstracts/search?q=Dile%20Kara"> Dile Kara</a>, <a href="https://publications.waset.org/abstracts/search?q=Salih%20Zeki%20Y%C4%B1ld%C4%B1z"> Salih Zeki Yıldız </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Metal containing polymers (MCPs) are macro molecules usually containing metal-ligand coordination units and are a multidisciplinary research field mainly based at the interface between coordination chemistry and polymer science. The progress of this area has also been reinforced by the growth of several other closely related disciplines including macro molecular engineering, crystal engineering, organic synthesis, supra molecular chemistry and colloidal and material science. Schiff base ligands are very effective in constructing supra molecular architectures such as coordination polymers, double helical and triple helical complexes. In addition, Schiff base derivatives incorporating a fluorescent moiety are appealing tools for optical sensing of metal ions. MCPs are well-known systems in which the combinations of local parameters are possible by means of fluoro metric techniques. Generally, without incorporation of the fluorescent groups with polymers is unspecific, and it is not useful to analyze their fluorescent properties. Therefore, it is necessary to prepare a new type epoxy polymers with fluorescent groups in terms of metal sensing prop and the other photo chemical applications. In the present study metal containing polymers were prepared via poly functional monomeric Schiff base metal chelate complexes in the presence of dis functional monomers such as diglycidyl ether Bisphenol A (DGEBA). The synthesized complexes and polymers were characterized by FTIR, UV-VIS and mass spectroscopies. The preparations of epoxy polymers have been carried out at 185 °C. The prepared composites having sharp and narrow excitation/emission properties are expected to be applicable in various systems such as heat-resistant polymers and photo voltaic devices. The prepared composite is also ideal for various applications, easily prepared, safe, and maintain good fluorescence properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Schiff%20base%20ligands" title="Schiff base ligands">Schiff base ligands</a>, <a href="https://publications.waset.org/abstracts/search?q=crystal%20engineering" title=" crystal engineering"> crystal engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescence%20properties" title=" fluorescence properties"> fluorescence properties</a>, <a href="https://publications.waset.org/abstracts/search?q=Metal%20Containing%20Polymers%20%28MCPs%29" title=" Metal Containing Polymers (MCPs)"> Metal Containing Polymers (MCPs)</a> </p> <a href="https://publications.waset.org/abstracts/17655/preparation-of-metal-containing-epoxy-polymer-and-investigation-of-their-properties-as-fluorescent-probe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17655.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">232</span> Thresholding Approach for Automatic Detection of Pseudomonas aeruginosa Biofilms from Fluorescence in situ Hybridization Images</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zonglin%20Yang">Zonglin Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tatsuya%20Akiyama"> Tatsuya Akiyama</a>, <a href="https://publications.waset.org/abstracts/search?q=Kerry%20S.%20Williamson"> Kerry S. Williamson</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20J.%20Franklin"> Michael J. Franklin</a>, <a href="https://publications.waset.org/abstracts/search?q=Thiruvarangan%20Ramaraj"> Thiruvarangan Ramaraj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <em>Pseudomonas aeruginosa</em> is an opportunistic pathogen that forms surface-associated microbial communities (biofilms) on artificial implant devices and on human tissue. Biofilm infections are difficult to treat with antibiotics, in part, because the bacteria in biofilms are physiologically heterogeneous. One measure of biological heterogeneity in a population of cells is to quantify the cellular concentrations of ribosomes, which can be probed with fluorescently labeled nucleic acids. The fluorescent signal intensity following fluorescence in situ hybridization (FISH) analysis correlates to the cellular level of ribosomes. The goals here are to provide computationally and statistically robust approaches to automatically quantify cellular heterogeneity in biofilms from a large library of epifluorescent microscopy FISH images. In this work, the initial steps were developed toward these goals by developing an automated biofilm detection approach for use with FISH images. The approach allows rapid identification of biofilm regions from FISH images that are counterstained with fluorescent dyes. This methodology provides advances over other computational methods, allowing subtraction of spurious signals and non-biological fluorescent substrata. This method will be a robust and user-friendly approach which will enable users to semi-automatically detect biofilm boundaries and extract intensity values from fluorescent images for quantitative analysis of biofilm heterogeneity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=image%20informatics" title="image informatics">image informatics</a>, <a href="https://publications.waset.org/abstracts/search?q=Pseudomonas%20aeruginosa" title=" Pseudomonas aeruginosa"> Pseudomonas aeruginosa</a>, <a href="https://publications.waset.org/abstracts/search?q=biofilm" title=" biofilm"> biofilm</a>, <a href="https://publications.waset.org/abstracts/search?q=FISH" title=" FISH"> FISH</a>, <a href="https://publications.waset.org/abstracts/search?q=computer%20vision" title=" computer vision"> computer vision</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20visualization" title=" data visualization"> data visualization</a> </p> <a href="https://publications.waset.org/abstracts/133177/thresholding-approach-for-automatic-detection-of-pseudomonas-aeruginosa-biofilms-from-fluorescence-in-situ-hybridization-images" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/133177.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">133</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">231</span> Effects of Stokes Shift and Purcell Enhancement in Fluorescence Assisted Radiative Cooling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xue%20Ma">Xue Ma</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Fu"> Yang Fu</a>, <a href="https://publications.waset.org/abstracts/search?q=Dangyuan%20Lei"> Dangyuan Lei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Passive daytime radiative cooling is an emerging technology which has attracted worldwide attention in recent years due to its huge potential in cooling buildings without the use of electricity. Various coating materials with different optical properties have been developed to improve the daytime radiative cooling performance. However, commercial cooling coatings comprising functional fillers with optical bandgaps within the solar spectral range suffers from severe intrinsic absorption, limiting their cooling performance. Fortunately, it has recently been demonstrated that introducing fluorescent materials into polymeric coatings can covert the absorbed sunlight to fluorescent emissions and hence increase the effective solar reflectance and cooling performance. In this paper, we experimentally investigate the key factors for fluorescence-assisted radiative cooling with TiO2-based white coatings. The surrounding TiO2 nanoparticles, which enable spatial and temporal light confinement through multiple Mie scattering, lead to Purcell enhancement of phosphors in the coating. Photoluminescence lifetimes of two phosphors (BaMgAl10O17:Eu2+ and (Sr, Ba)SiO4:Eu2+) exhibit significant reduction of ~61% and ~23%, indicating Purcell factors of 2.6 and 1.3, respectively. Moreover, smaller Stokes shifts of the phosphors are preferred to further diminish solar absorption. Field test of fluorescent cooling coatings demonstrate an improvement of ~4% solar reflectance for the BaMgAl10O17:Eu2+-based fluorescent cooling coating. However, to maximize solar reflectance, a white appearance is introduced based on multiple Mie scattering by the broad size distribution of fillers, which is visually pressurized and aesthetically bored. Besides, most colored pigments absorb visible light significantly and convert it to non-radiative thermal energy, offsetting the cooling effect. Therefore, current colored cooling coatings are facing the compromise between color saturation and cooling effect. To solve this problem, we introduced colored fluorescent materials into white coating based on SiO2 microspheres as a top layer, covering a white cooling coating based on TiO2. Compared with the colored pigments, fluorescent materials could re-emit the absorbed light, reducing the solar absorption introduced by coloration. Our work investigated the scattering properties of SiO2 dielectric spheres with different diameters and detailly discussed their impact on the PL properties of phosphors, paving the way for colored fluorescent-assisted cooling coting to application and industrialization. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20reflection" title="solar reflection">solar reflection</a>, <a href="https://publications.waset.org/abstracts/search?q=infrared%20emissivity" title=" infrared emissivity"> infrared emissivity</a>, <a href="https://publications.waset.org/abstracts/search?q=mie%20scattering" title=" mie scattering"> mie scattering</a>, <a href="https://publications.waset.org/abstracts/search?q=photoluminescent%20emission" title=" photoluminescent emission"> photoluminescent emission</a>, <a href="https://publications.waset.org/abstracts/search?q=radiative%20cooling" title=" radiative cooling"> radiative cooling</a> </p> <a href="https://publications.waset.org/abstracts/167284/effects-of-stokes-shift-and-purcell-enhancement-in-fluorescence-assisted-radiative-cooling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167284.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">86</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">230</span> Albumin-Induced Turn-on Fluorescence in Molecular Engineered Fluorescent Probe for Biomedical Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raja%20Chinnappan">Raja Chinnappan</a>, <a href="https://publications.waset.org/abstracts/search?q=Huda%20Alanazi"> Huda Alanazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shanmugam%20Easwaramoorthi"> Shanmugam Easwaramoorthi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanveer%20Mir"> Tanveer Mir</a>, <a href="https://publications.waset.org/abstracts/search?q=Balamurugan%20Kanagasabai"> Balamurugan Kanagasabai</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Yaqinuddin"> Ahmed Yaqinuddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandhanasamy%20Devanesan"> Sandhanasamy Devanesan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamad%20S.%20AlSalhi"> Mohamad S. AlSalhi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Serum albumin (SA) is a highly rich water-soluble protein in plasma. It is known to maintain the living organisms' health and help to maintain the proper liver function, kidney function, and plasma osmolality in the body. Low levels of serum albumin are an indication of liver failure and chronic hepatitis. Therefore, it is important to have a low-cost, accurate and rapid method. In this study, we designed a fluorescent probe, triphenylamine rhodanine-3-acetic acid (mRA), which triggers the fluorescence signal upon binding with serum albumin (SA). mRA is a bifunctional molecule with twisted intramolecular charge transfer (TICT)-induced emission characteristics. An aqueous solution of mRA has an insignificant fluorescence signal; however, when mRA binds to SA, it undergoes TICT and turns on the fluorescence emission. A SA dose-dependent fluorescence signal was performed, and the limit of detection was found to be less than ng/mL. The specific binding of SA was tested from the cross-reactivity study using similar structural or functional proteins. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=serum%20albumin" title="serum albumin">serum albumin</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20sensing%20probe" title=" fluorescent sensing probe"> fluorescent sensing probe</a>, <a href="https://publications.waset.org/abstracts/search?q=liver%20diseases" title=" liver diseases"> liver diseases</a>, <a href="https://publications.waset.org/abstracts/search?q=twisted%20intramolecular%20charge%20transfer" title=" twisted intramolecular charge transfer"> twisted intramolecular charge transfer</a> </p> <a href="https://publications.waset.org/abstracts/193364/albumin-induced-turn-on-fluorescence-in-molecular-engineered-fluorescent-probe-for-biomedical-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193364.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">17</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">229</span> Evaluating Gallein Dye as a Beryllium Indicator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elise%20M.%20Shauf">Elise M. Shauf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Beryllium can be found naturally in some fruits and vegetables (carrots, garden peas, kidney beans, pears) at very low concentrations, but is typically not clinically significant due to the low-level exposure and limited absorption of beryllium by the stomach and intestines. However, acute or chronic beryllium exposure can result in harmful toxic and carcinogenic biological effects. Beryllium can be both a workplace hazard and an environmental pollutant, therefore determining the presence of beryllium at trace levels can be essential to protect workers as well as the environment. Analysis of gallein, C₂₀H₁₂O₇, to determine if it is usable as a fluorescent dye for beryllium detection. The primary detection method currently in use includes hydroxybenzoquinoline sulfonates (HBQS), for which alternative indicators are desired. Unfortunately, gallein does not have the desired aspects needed as a dye for beryllium detection due to the peak shift properties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beryllium%20detection" title="beryllium detection">beryllium detection</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent" title=" fluorescent"> fluorescent</a>, <a href="https://publications.waset.org/abstracts/search?q=gallein%20dye" title=" gallein dye"> gallein dye</a>, <a href="https://publications.waset.org/abstracts/search?q=indicator" title=" indicator"> indicator</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopy" title=" spectroscopy"> spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/147456/evaluating-gallein-dye-as-a-beryllium-indicator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147456.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">142</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">228</span> A Dihydropyridine Derivative as a Highly Selective Fluorometric Probe for Quantification of Au3+ Residue in Gold Nanoparticle Solution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Waroton%20Paisuwan">Waroton Paisuwan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mongkol%20Sukwattanasinitt"> Mongkol Sukwattanasinitt</a>, <a href="https://publications.waset.org/abstracts/search?q=Mamoru%20Tobisu"> Mamoru Tobisu</a>, <a href="https://publications.waset.org/abstracts/search?q=Anawat%20Ajavakom"> Anawat Ajavakom</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Novel dihydroquinoline derivatives (DHP and DHP-OH) were synthesized in one pot via a tandem trimerization-cyclization of methylpropiolate. DHP and DHP-OH possess strong blue fluorescence with high quantum efficiencies over 0.70 in aqueous media. DHP-OH displays a remarkable fluorescence quenching selectively to the presence of Au3+ through the oxidation of dihydropyridine to pyridinium ion as confirmed by NMR and HRMS. DHP-OH was used to demonstrate the quantitative analysis of Au3+ in water samples with the limit of detection of 33 ppb and excellent recovery (>95%). This fluorescent probe was also applied for the determination of Au3+ residue in the gold nanoparticle solution and a paper-based sensing strip for the on-site detection of Au3+. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gold%28III%29%20ion%20detection" title="Gold(III) ion detection">Gold(III) ion detection</a>, <a href="https://publications.waset.org/abstracts/search?q=Fluorescent%20sensor" title=" Fluorescent sensor"> Fluorescent sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=Fluorescence%20quenching" title=" Fluorescence quenching"> Fluorescence quenching</a>, <a href="https://publications.waset.org/abstracts/search?q=Dihydropyridine" title=" Dihydropyridine"> Dihydropyridine</a>, <a href="https://publications.waset.org/abstracts/search?q=Gold%20nanoparticles%20%28AuNPs%29" title=" Gold nanoparticles (AuNPs)"> Gold nanoparticles (AuNPs)</a> </p> <a href="https://publications.waset.org/abstracts/165620/a-dihydropyridine-derivative-as-a-highly-selective-fluorometric-probe-for-quantification-of-au3-residue-in-gold-nanoparticle-solution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165620.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">86</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">227</span> Synthesis, Characterization and Bioactivity of Methotrexate Conjugated Fluorescent Carbon Nanoparticles in vitro Model System Using Human Lung Carcinoma Cell Lines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Matin">Abdul Matin</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Ajmal"> Muhammad Ajmal</a>, <a href="https://publications.waset.org/abstracts/search?q=Uzma%20Yunus"> Uzma Yunus</a>, <a href="https://publications.waset.org/abstracts/search?q=Noaman-ul%20Haq"> Noaman-ul Haq</a>, <a href="https://publications.waset.org/abstracts/search?q=Hafiz%20M.%20Shohaib"> Hafiz M. Shohaib</a>, <a href="https://publications.waset.org/abstracts/search?q=Ambreen%20G.%20Muazzam"> Ambreen G. Muazzam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbon nanoparticles (CNPs) have unique properties that are useful for the diagnosis and treatment of cancer due to their precise properties like small size (ideal for delivery within the body) stability in solvent and tunable surface chemistry for targeted delivery. Here, highly fluorescent, monodispersed and water-soluble CNPs were synthesized directly from a suitable carbohydrate source (glucose and sucrose) by one-step acid assisted ultrasonic treatment at 35 KHz for 4 hours. This method is green, simple, rapid and economical and can be used for large scale production and applications. The average particle sizes of CNPs are less than 10nm and they emit bright and colorful green-blue fluorescence under the irradiation of UV-light at 365nm. The CNPs were characterized by scanning electron microscopy, fluorescent spectrophotometry, Fourier transform infrared spectrophotometry, ultraviolet-visible spectrophotometry and TGA analysis. Fluorescent CNPs were used as fluorescent probe and nano-carriers for anticancer drug. Functionalized CNPs (with ethylene diamine) were attached with anticancer drug-Methotrexate. In vitro bioactivity and biocompatibility of CNPs-drug conjugates was evaluated by LDH assay and Sulforhodamine B assay using human lung carcinoma cell lines (H157). Our results reveled that CNPs showed biocompatibility and CNPs-anticancer drug conjugates have shown potent cytotoxic effects and high antitumor activities in lung cancer cell lines. CNPs are proved to be excellent substitute for conventional drug delivery cargo systems and anticancer therapeutics in vitro. Our future studies will be more focused on using the same nanoparticles in vivo model system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20nanoparticles" title="carbon nanoparticles">carbon nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20nanoparticles-methotrexate%20conjugates" title=" carbon nanoparticles-methotrexate conjugates"> carbon nanoparticles-methotrexate conjugates</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20lung%20carcinoma%20cell%20lines" title=" human lung carcinoma cell lines"> human lung carcinoma cell lines</a>, <a href="https://publications.waset.org/abstracts/search?q=lactate%20dehydrogenase" title=" lactate dehydrogenase"> lactate dehydrogenase</a>, <a href="https://publications.waset.org/abstracts/search?q=methotrexate" title=" methotrexate"> methotrexate</a> </p> <a href="https://publications.waset.org/abstracts/42526/synthesis-characterization-and-bioactivity-of-methotrexate-conjugated-fluorescent-carbon-nanoparticles-in-vitro-model-system-using-human-lung-carcinoma-cell-lines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42526.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">305</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">226</span> Rapid Detection System of Airborne Pathogens</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shigenori%20Togashi">Shigenori Togashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kei%20Takenaka"> Kei Takenaka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We developed new processes which can collect and detect rapidly airborne pathogens such as the avian flu virus for the pandemic prevention. The fluorescence antibody technique is known as one of high-sensitive detection methods for viruses, but this needs up to a few hours to bind sufficient fluorescence dyes to viruses for detection. In this paper, we developed a mist-labeling can detect substitution viruses in a short time to improve the binding rate of fluorescent dyes and substitution viruses by the micro reaction process. Moreover, we developed the rapid detection system with the above 'mist labeling'. The detection system set with a sampling bag collecting patient’s breath and a cartridge can detect automatically pathogens within 10 minutes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=viruses" title="viruses">viruses</a>, <a href="https://publications.waset.org/abstracts/search?q=sampler" title=" sampler"> sampler</a>, <a href="https://publications.waset.org/abstracts/search?q=mist" title=" mist"> mist</a>, <a href="https://publications.waset.org/abstracts/search?q=detection" title=" detection"> detection</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20dyes" title=" fluorescent dyes"> fluorescent dyes</a>, <a href="https://publications.waset.org/abstracts/search?q=microreaction" title=" microreaction"> microreaction</a> </p> <a href="https://publications.waset.org/abstracts/2700/rapid-detection-system-of-airborne-pathogens" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2700.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">475</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fluorescent&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fluorescent&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fluorescent&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fluorescent&page=5">5</a></li> <li class="page-item"><a class="page-link" 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