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Lee</title> <meta name="description" content="Search results for: Alpha Lee"> <meta name="keywords" content="Alpha Lee"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" 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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="Alpha Lee"> <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> 745</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Alpha Lee</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">745</span> Development of Alpha Spectroscopy Method with Solid State Nuclear Track Detector Using Aluminium Thin Films</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nidal%20Dwaikat">Nidal Dwaikat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents the development of alpha spectroscopy method with Solid-state nuclear track detectors using aluminum thin films. The resolution of this method is high, and it is able to discriminate between alpha particles at different incident energy. It can measure the exact number of alpha particles at specific energy without needing a calibration of alpha track diameter versus alpha energy. This method was tested by using Cf-252 alpha standard source at energies 5.11 Mev, 3.86 MeV and 2.7 MeV, which produced by the variation of detector -standard source distance. On front side, two detectors were covered with two Aluminum thin films and the third detector was kept uncovered. The thickness of Aluminum thin films was selected carefully (using SRIM 2013) such that one of the films will block the lower two alpha particles (3.86 MeV and 2.7 MeV) and the alpha particles at higher energy (5.11 Mev) can penetrate the film and reach the detector’s surface. The second thin film will block alpha particles at lower energy of 2.7 MeV and allow alpha particles at higher two energies (5.11 Mev and 3.86 MeV) to penetrate and produce tracks. For uncovered detector, alpha particles at three different energies can produce tracks on it. For quality assurance and accuracy, the detectors were mounted on thick enough copper substrates to block exposure from the backside. The tracks on the first detector are due to alpha particles at energy of 5.11 MeV. The difference between the tracks number on the first detector and the tracks number on the second detector is due to alpha particles at energy of 3.8 MeV. Finally, by subtracting the tracks number on the second detector from the tracks number on the third detector (uncovered), we can find the tracks number due to alpha particles at energy 2.7 MeV. After knowing the efficiency calibration factor, we can exactly calculate the activity of standard source. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminium%20thin%20film" title="aluminium thin film">aluminium thin film</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha%20particles" title=" alpha particles"> alpha particles</a>, <a href="https://publications.waset.org/abstracts/search?q=copper%20substrate" title=" copper substrate"> copper substrate</a>, <a href="https://publications.waset.org/abstracts/search?q=CR-39%20detector" title=" CR-39 detector"> CR-39 detector</a> </p> <a href="https://publications.waset.org/abstracts/41596/development-of-alpha-spectroscopy-method-with-solid-state-nuclear-track-detector-using-aluminium-thin-films" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41596.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">365</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">744</span> Design Manufacture and Testing of a Combined Alpha-Beta Double Piston Stirling Engine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Calvin%20Antony">A. Calvin Antony</a>, <a href="https://publications.waset.org/abstracts/search?q=Sakthi%20Kumar%20Arul%20Prakash"> Sakthi Kumar Arul Prakash</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20R.%20Sanal%20Kumar"> V. R. Sanal Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper a unique alpha-beta double piston 'stirling engine' is designed, manufactured and conducted laboratory test to ameliorate the efficiency of the stirling engine. The paper focuses on alpha and beta type engines, capturing their benefits and eradicating their short comings; along with the output observed from the flywheel. In this model alpha engine is kinematically with a piston cylinder arrangement which works quite like a beta engine. The piston of the new cylinder is so designed that it replicates a glued displacer and power piston as similar to that of beta engine. The bigger part of the piston is the power piston, which has a gap around it, while the smaller part of the piston is tightly fit in the cylinder and acts like the displacer piston. We observed that the alpha-beta double piston stirling engine produces 25% increase in power compare to a conventional alpha stirling engine. This working model is a pointer towards for the design and development of an alpha-beta double piston Stirling engine for industrial applications for producing electricity from the heat producing exhaust gases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha-beta%20double%20piston%20stirling%20engine" title="alpha-beta double piston stirling engine ">alpha-beta double piston stirling engine </a>, <a href="https://publications.waset.org/abstracts/search?q=alpha%20stirling%20engine" title=" alpha stirling engine "> alpha stirling engine </a>, <a href="https://publications.waset.org/abstracts/search?q=beta%20double%20piston%20stirling%20engine" title=" beta double piston stirling engine "> beta double piston stirling engine </a>, <a href="https://publications.waset.org/abstracts/search?q=electricity%20from%20stirling%20engine" title=" electricity from stirling engine"> electricity from stirling engine</a> </p> <a href="https://publications.waset.org/abstracts/35104/design-manufacture-and-testing-of-a-combined-alpha-beta-double-piston-stirling-engine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35104.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">533</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">743</span> In Silico Study of Alpha glucosidase Inhibitors by Flavonoids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Boukli%20Hacene%20Faiza">Boukli Hacene Faiza</a>, <a href="https://publications.waset.org/abstracts/search?q=Soufi%20Wassila"> Soufi Wassila</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghalem%20Said"> Ghalem Said</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The oral antidiabetics drugs such as alpha glucosidase inhibitors present undesirable effects like acarbose. Flavonoids are class of molecules widely distributed in plants, for this reason we are interested in our work to study the inhibition in silico of alpha glucosidase by natural ligands ( flavonoids analogues) using molecular modeling methods using MOE (Molecular Operating Environment) software to predict their interaction with this enzyme with score energy, ADME /T tests and druglikeness properties experiments. Two flavonoids Beicalein and Apigenin have high binding affinity with alpha glucosidase with lower IC50 supposed potent inhibitors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20glucosidase" title="alpha glucosidase">alpha glucosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=flavonoides%20analogues" title=" flavonoides analogues"> flavonoides analogues</a>, <a href="https://publications.waset.org/abstracts/search?q=drug%20research" title=" drug research"> drug research</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20modeling" title=" molecular modeling"> molecular modeling</a> </p> <a href="https://publications.waset.org/abstracts/156715/in-silico-study-of-alpha-glucosidase-inhibitors-by-flavonoids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156715.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">107</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">742</span> Mathematical Modelling of the Effect of Glucose on Pancreatic Alpha-Cell Activity </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Karen%20K.%20Perez-Ramirez">Karen K. Perez-Ramirez</a>, <a href="https://publications.waset.org/abstracts/search?q=Genevieve%20Dupont"> Genevieve Dupont</a>, <a href="https://publications.waset.org/abstracts/search?q=Virginia%20Gonzalez-Velez"> Virginia Gonzalez-Velez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pancreatic alpha-cells participate on glucose regulation together with beta cells. They release glucagon hormone when glucose level is low to stimulate gluconeogenesis from the liver. As other excitable cells, alpha cells generate Ca2+ and metabolic oscillations when they are stimulated. It is known that the glucose level can trigger or silence this activity although it is not clear how this occurs in normal and diabetic people. In this work, we propose an electric-metabolic mathematical model implemented in Matlab to study the effect of different glucose levels on the electrical response and Ca2+ oscillations of an alpha cell. Our results show that Ca2+ oscillations appear in opposite phase with metabolic oscillations in a window of glucose values. The model also predicts a direct relationship between the level of glucose and the intracellular adenine nucleotides showing a self-regulating pathway for the alpha cell. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ca2%2B%20oscillations" title="Ca2+ oscillations">Ca2+ oscillations</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model"> mathematical model</a>, <a href="https://publications.waset.org/abstracts/search?q=metabolic%20oscillations" title=" metabolic oscillations"> metabolic oscillations</a>, <a href="https://publications.waset.org/abstracts/search?q=pancreatic%20alpha%20cell" title=" pancreatic alpha cell"> pancreatic alpha cell</a> </p> <a href="https://publications.waset.org/abstracts/96002/mathematical-modelling-of-the-effect-of-glucose-on-pancreatic-alpha-cell-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96002.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">178</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">741</span> Application of EEG Wavelet Power to Prediction of Antidepressant Treatment Response</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dorota%20Witkowska">Dorota Witkowska</a>, <a href="https://publications.waset.org/abstracts/search?q=Pawe%C5%82%20Gosek"> Paweł Gosek</a>, <a href="https://publications.waset.org/abstracts/search?q=Lukasz%20Swiecicki"> Lukasz Swiecicki</a>, <a href="https://publications.waset.org/abstracts/search?q=Wojciech%20Jernajczyk"> Wojciech Jernajczyk</a>, <a href="https://publications.waset.org/abstracts/search?q=Bruce%20J.%20West"> Bruce J. West</a>, <a href="https://publications.waset.org/abstracts/search?q=Miroslaw%20Latka"> Miroslaw Latka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In clinical practice, the selection of an antidepressant often degrades to lengthy trial-and-error. In this work we employ a normalized wavelet power of alpha waves as a biomarker of antidepressant treatment response. This novel EEG metric takes into account both non-stationarity and intersubject variability of alpha waves. We recorded resting, 19-channel EEG (closed eyes) in 22 inpatients suffering from unipolar (UD, n=10) or bipolar (BD, n=12) depression. The EEG measurement was done at the end of the short washout period which followed previously unsuccessful pharmacotherapy. The normalized alpha wavelet power of 11 responders was markedly different than that of 11 nonresponders at several, mostly temporoparietal sites. Using the prediction of treatment response based on the normalized alpha wavelet power, we achieved 81.8% sensitivity and 81.8% specificity for channel T4. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20waves" title="alpha waves">alpha waves</a>, <a href="https://publications.waset.org/abstracts/search?q=antidepressant" title=" antidepressant"> antidepressant</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment%20outcome" title=" treatment outcome"> treatment outcome</a>, <a href="https://publications.waset.org/abstracts/search?q=wavelet" title=" wavelet"> wavelet</a> </p> <a href="https://publications.waset.org/abstracts/2686/application-of-eeg-wavelet-power-to-prediction-of-antidepressant-treatment-response" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2686.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">315</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">740</span> Cloning, Expression and N-Terminal Pegylation of Human Interferon Alpha-2b Analogs and Their Cytotoxic Evaluation against Cancer Cell Lines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syeda%20Kiran%20Shahzadi">Syeda Kiran Shahzadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nasir%20Mahmood"> Nasir Mahmood</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Abdul%20Qadir"> Muhammad Abdul Qadir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the current research, three recombinant human interferon alpha-2b proteins (two modified and one normal form) were produced and Pegylated with an aim to produce more effective drugs against viral infections and cancers. The modified recombinant human interferon alpha-2b proteins were produced by site-directed modifications of interferon alpha 2b gene, targeting the amino acids at positions ‘R23’ and ‘H34’. The resulting chemically modified and unmodified forms of human interferon alpha 2b were conjugated with methoxy-polyethylene glycol propanealdehyde (400 KDa) and methoxy-polyethylene glycol succinimidyl succinate (400 KDa). Pegylation of normal and modified forms of Interferon alpha-2b prolong their release time and enhance their efficacy. The conjugation of PEG with modified and unmodified human interferon alpha 2b protein drugs was also characterized with 1H-NMR, HPLC, and SDS-PAGE. Antiproliferative assays of modified and unmodified forms of drugs were performed in cell based bioassays using MDBK cell lines. The results indicated that experimentally produced recombinant human interferon alpha-2b proteins were biologically active and resulted in significant inhibition of cell growth. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=protein%20refolding" title="protein refolding">protein refolding</a>, <a href="https://publications.waset.org/abstracts/search?q=antiproliferative%20activities" title=" antiproliferative activities"> antiproliferative activities</a>, <a href="https://publications.waset.org/abstracts/search?q=biomedical%20applications" title=" biomedical applications"> biomedical applications</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20interferon%20alpha-2b" title=" human interferon alpha-2b"> human interferon alpha-2b</a>, <a href="https://publications.waset.org/abstracts/search?q=pegylation" title=" pegylation"> pegylation</a>, <a href="https://publications.waset.org/abstracts/search?q=mPEG-propionaldehyde" title=" mPEG-propionaldehyde"> mPEG-propionaldehyde</a>, <a href="https://publications.waset.org/abstracts/search?q=site%20directed%20mutagenesis" title=" site directed mutagenesis"> site directed mutagenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20coli%20expression" title=" E. coli expression"> E. coli expression</a> </p> <a href="https://publications.waset.org/abstracts/83956/cloning-expression-and-n-terminal-pegylation-of-human-interferon-alpha-2b-analogs-and-their-cytotoxic-evaluation-against-cancer-cell-lines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83956.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">177</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">739</span> Box Counting Dimension of the Union L of Trinomial Curves When α ≥ 1</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kaoutar%20Lamrini%20Uahabi">Kaoutar Lamrini Uahabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Atounti"> Mohamed Atounti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, we consider one category of curves denoted by L(p, k, r, n). These curves are continuous arcs which are trajectories of roots of the trinomial equation zn = αzk + (1 − α), where z is a complex number, n and k are two integers such that 1 ≤ k ≤ n − 1 and α is a real parameter greater than 1. Denoting by L the union of all trinomial curves L(p, k, r, n) and using the box counting dimension as fractal dimension, we will prove that the dimension of L is equal to 3/2. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=feasible%20angles" title="feasible angles">feasible angles</a>, <a href="https://publications.waset.org/abstracts/search?q=fractal%20dimension" title=" fractal dimension"> fractal dimension</a>, <a href="https://publications.waset.org/abstracts/search?q=Minkowski%20sausage" title=" Minkowski sausage"> Minkowski sausage</a>, <a href="https://publications.waset.org/abstracts/search?q=trinomial%20curves" title=" trinomial curves"> trinomial curves</a>, <a href="https://publications.waset.org/abstracts/search?q=trinomial%20equation" title=" trinomial equation"> trinomial equation</a> </p> <a href="https://publications.waset.org/abstracts/87207/box-counting-dimension-of-the-union-l-of-trinomial-curves-when-a-1" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87207.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">189</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">738</span> Effect of Oxytocin on Cytosolic Calcium Concentration of Alpha and Beta Cells in Pancreas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rauza%20Sukma%20Rita">Rauza Sukma Rita</a>, <a href="https://publications.waset.org/abstracts/search?q=Katsuya%20Dezaki"> Katsuya Dezaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuko%20Maejima"> Yuko Maejima</a>, <a href="https://publications.waset.org/abstracts/search?q=Toshihiko%20Yada"> Toshihiko Yada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oxytocin is a nine-amino acid peptide synthesized in the paraventricular nucleus (PVN) and supraoptic nucleus (SON) of the hypothalamus. Oxytocin promotes contraction of the uterus during birth and milk ejection during breast feeding. Although oxytocin receptors are found predominantly in the breasts and uterus of females, many tissues and organs express oxytocin receptors, including the pituitary, heart, kidney, thymus, vascular endothelium, adipocytes, osteoblasts, adrenal gland, pancreatic islets, and many cell lines. On the other hand, in pancreatic islets, oxytocin receptors are expressed in both α-cells and β-cells with stronger expression in α- cells. However, to our knowledge there are no reports yet about the effect of oxytocin on cytosolic calcium reaction on α and β-cell. This study aims to investigate the effect of oxytocin on α-cells and β-cells and its oscillation pattern. Islet of Langerhans from wild type mice were isolated by collagenase digestion. Isolated and dissociated single cells either α-cells or β-cells on coverslips were mounted in an open chamber and superfused in HKRB. Cytosolic concentration ([Ca2+]i) in single cells were measured by fura-2 microfluorimetry. After measurement of [Ca2+]i, α-cells were identified by subsequent immunocytochemical staining using an anti-glucagon antiserum. In β-cells, the [Ca2+]i increase in response to oxytocin was observed only under 8.3 mM glucose condition, whereas in α-cells, [Ca2+]i an increase induced by oxytocin was observed in both 2.8 mM and 8.3 mM glucose. The oscillation incidence was induced more frequently in β-cells compared to α-cells. In conclusion, the present study demonstrated that oxytocin directly interacts with both α-cells and β-cells and induces increase of [Ca2+]i and its specific patterns. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-cells" title="α-cells">α-cells</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B2-cells" title=" β-cells"> β-cells</a>, <a href="https://publications.waset.org/abstracts/search?q=cytosolic%20calcium%20concentration" title=" cytosolic calcium concentration"> cytosolic calcium concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=oscillation" title=" oscillation"> oscillation</a>, <a href="https://publications.waset.org/abstracts/search?q=oxytocin" title=" oxytocin"> oxytocin</a> </p> <a href="https://publications.waset.org/abstracts/58454/effect-of-oxytocin-on-cytosolic-calcium-concentration-of-alpha-and-beta-cells-in-pancreas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58454.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">193</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">737</span> Titanium Alloys for Cryogenic Gas Bottle Applications: A Comparative Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bhanu%20Pant">Bhanu Pant</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20H.%20Upadhyay"> Sanjay H. Upadhyay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Titanium alloys, owing to their high specific strength coupled with excellent resistance to corrosion in many severe environments, find extensive usage in the aerospace sector. Alpha and beta lean Titanium alloys have an additional characteristic of exhibiting high toughness with an NTS/ UTS ratio greater than one down to liquid oxygen and liquid helium temperatures. The cryogenic stage of high-performance rockets utilizes cryo-fluid submerged pressurizing tanks to improve volume to mass performance factor. A superior volume-to-mass ratio is achieved for LH2-submerged pressurizing tanks as compared to those submerged in LOX. Such high-efficiency tanks for LH2 submerged application necessitate the use of difficult to process alpha type Ti5Al2.5Sn-ELI alloy, which requires close control of process parameters to develop the tanks. In the present paper, a comparison of this alpha-type cryogenic Titanium alloy has been brought out with conventional alpha-beta Ti6Al4V-ELI alloy, which is usable up to LOX temperatures. Specific challenges faced during the development of these cryogenic pressurizing tanks for a launch vehicle based on the author's experience are included in the paper on the comparatively lesser-studied alpha Ti5Al2.5Sn-ELI alloy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cryogenic%20tanks" title="cryogenic tanks">cryogenic tanks</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20Alloys" title=" titanium Alloys"> titanium Alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=NTS%2FUTS%20ratio" title=" NTS/UTS ratio"> NTS/UTS ratio</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha%20and%20alpha-beta%20ELI%20alloys" title=" alpha and alpha-beta ELI alloys"> alpha and alpha-beta ELI alloys</a> </p> <a href="https://publications.waset.org/abstracts/184964/titanium-alloys-for-cryogenic-gas-bottle-applications-a-comparative-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184964.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">62</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">736</span> Mechanism of in Vitro Inhibition of Alpha-Amylase, Alpha-Glucosidase by Ethanolic Extracts of Polyalthia Longifolia, Its in Vitro Cytotoxicity on L6, Vero Cell-Lines and Influence of Glucose Uptake by Rat Hemi-Diaphragm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Gayathri">P. Gayathri</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20P.%20Jeyanthi"> G. P. Jeyanthi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The bark of Polyalthia longifolia is used in ayurvedic system of medicine for the manangement of various ailments including diabetes mellitus. The bark of P. longifolia extracts was extracted using various polar and non-polar solvents and tested for inhibition of alpha-amylase and alpha-glucosidase among which the ethanolic extracts were found to be more potent. The ethanolic extracts of the bark were tested for the in vitro inhibition of alpha-amylase using starch as substrate and alpha-glucosidase using p-nitro phenyl alpha-D-gluco pyranoside as substrate to establish its in vitro antidiabetic effect. The mechanism of inhibition was determined by Dixon plot and Cornish-Bowden plot. The cytotoxic effect of the extract was tested on L6 and Vero cell-lines. The extract was partially purified by TLC. The individual effect of the ethanolic extract, TLC fractions and its combinatorial effect with insulin and glibenclamide on glucose uptake by rat hemi-diaphragm were studied.Results revealed that the ethanolic extracts of Polyalthia longifolia bark exhibited competitive inhibition of alpha-amylase and alpha-glucosidase. The extracts were also found not to be cytotoxic at the highest dose of 1 mg/mL. Glucose uptake study revealed that the extract alone and when combined with insulin, decreased the glucose uptake when compared to insulin control, however the purified TLC fractions exhibited significantly higher (p<0.05) glucose uptake by the rat hemi-diaphragm when compared to insulin. The study shows various possible mechanism of in vitro antidiabetic effect of the P. longifolia bark. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha-amylase" title="alpha-amylase">alpha-amylase</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha-glucosidase" title=" alpha-glucosidase"> alpha-glucosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=dixon" title=" dixon"> dixon</a>, <a href="https://publications.waset.org/abstracts/search?q=cornish-bowden" title=" cornish-bowden"> cornish-bowden</a>, <a href="https://publications.waset.org/abstracts/search?q=L6" title=" L6 "> L6 </a>, <a href="https://publications.waset.org/abstracts/search?q=Vero%20cell-lines" title=" Vero cell-lines"> Vero cell-lines</a>, <a href="https://publications.waset.org/abstracts/search?q=glucose%20uptake" title=" glucose uptake"> glucose uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=polyalthia%20longifolia%20bark" title=" polyalthia longifolia bark"> polyalthia longifolia bark</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanolic%20extract" title=" ethanolic extract"> ethanolic extract</a>, <a href="https://publications.waset.org/abstracts/search?q=TLC%20fractions" title=" TLC fractions"> TLC fractions</a> </p> <a href="https://publications.waset.org/abstracts/34899/mechanism-of-in-vitro-inhibition-of-alpha-amylase-alpha-glucosidase-by-ethanolic-extracts-of-polyalthia-longifolia-its-in-vitro-cytotoxicity-on-l6-vero-cell-lines-and-influence-of-glucose-uptake-by-rat-hemi-diaphragm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34899.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">469</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">735</span> A New Alpha-Amylase Inhibitor Isolated from the Stem Bark of Anthocleista Djalonensis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oseyemi%20O.%20Olubomehin">Oseyemi O. Olubomehin</a>, <a href="https://publications.waset.org/abstracts/search?q=Edith%20O.%20Ajaiyeoba"> Edith O. Ajaiyeoba</a>, <a href="https://publications.waset.org/abstracts/search?q=Kio%20A.%20Abo"> Kio A. Abo</a>, <a href="https://publications.waset.org/abstracts/search?q=Eleonora%20D.%20Goosen"> Eleonora D. Goosen </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diabetes is a major degenerative disease of global concern and it is the third most lethal disease of mankind, accounting for about 3.2 million deaths annually. Lowering postprandial hyperglycemia by inhibition of carbohydrate hydrolyzing enzyme such as alpha-amylase is one of the therapeutic approaches to treat Type 2 Diabetes. Alpha-amylase inhibitors from plants have been found to be effective in managing postprandial hyperglycemia. In continuation of our anti-diabetic activities of this plant, bioassay-guided fractionation and isolation using 0.1-1.0 mg/mL furnished djalonenol, a monoterpene diol with a significant 53.7% α-amylase inhibition (p<0.001) from the stem bark which was comparable to acarbose which gave a 54.9% inhibition. Spectral characterization using Infra-red, Gas Chromatogrphy-Mass spectrometry, 1D and 2D NMR of the isolated compound was done to elucidate the structure of the compound. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha-amylase%20inhibitor" title="alpha-amylase inhibitor">alpha-amylase inhibitor</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperglycemia" title=" hyperglycemia"> hyperglycemia</a>, <a href="https://publications.waset.org/abstracts/search?q=postprandial" title=" postprandial"> postprandial</a>, <a href="https://publications.waset.org/abstracts/search?q=diabetes" title=" diabetes"> diabetes</a> </p> <a href="https://publications.waset.org/abstracts/19227/a-new-alpha-amylase-inhibitor-isolated-from-the-stem-bark-of-anthocleista-djalonensis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19227.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">458</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">734</span> Anisotropic Shear Strength of Sand Containing Plastic Fine Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alaa%20H.%20J.%20Al-Rkaby">Alaa H. J. Al-Rkaby</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chegenizadeh"> A. Chegenizadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20R.%20Nikraz"> H. R. Nikraz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Anisotropy is one of the major aspects that affect soil behavior, and extensive efforts have investigated its effect on the mechanical properties of soil. However, very little attention has been given to the combined effect of anisotropy and fine contents. Therefore, in this paper, the anisotropic strength of sand containing different fine content (F) of 5%, 10%, 15%, and 20%, was investigated using hollow cylinder tests under different principal stress directions of α = 0° and α = 90°. For a given principal stress direction (α), it was found that increasing fine content resulted in decreasing deviator stress (q). Moreover, results revealed that all fine contents showed anisotropic strength where there is a clear difference between the strength under 0° and the strength under 90°. This anisotropy was greatest under F = 5% while it decreased with increasing fine contents, particularly at F = 10%. Mixtures with low fine content show low contractive behavior and tended to show more dilation. Moreover, all sand-clay mixtures exhibited less dilation and more compression at α = 90° compared with that at α = 0°. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anisotropy" title="anisotropy">anisotropy</a>, <a href="https://publications.waset.org/abstracts/search?q=principal%20stress%20direction" title=" principal stress direction"> principal stress direction</a>, <a href="https://publications.waset.org/abstracts/search?q=fine%20content" title=" fine content"> fine content</a>, <a href="https://publications.waset.org/abstracts/search?q=hollow%20cylinder%20sample" title=" hollow cylinder sample"> hollow cylinder sample</a> </p> <a href="https://publications.waset.org/abstracts/65471/anisotropic-shear-strength-of-sand-containing-plastic-fine-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65471.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">312</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">733</span> Smokeless Tobacco Oral Manifestation and Inflammatory Biomarkers in Saliva</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sintija%20Mi%C4%BCuna">Sintija Miļuna</a>, <a href="https://publications.waset.org/abstracts/search?q=Ri%C4%8Dards%20Melderis"> Ričards Melderis</a>, <a href="https://publications.waset.org/abstracts/search?q=Loreta%20Briuka"> Loreta Briuka</a>, <a href="https://publications.waset.org/abstracts/search?q=Dagnija%20Rostoka"> Dagnija Rostoka</a>, <a href="https://publications.waset.org/abstracts/search?q=Ingus%20Skadi%C5%86%C5%A1"> Ingus Skadiņš</a>, <a href="https://publications.waset.org/abstracts/search?q=Juta%20Kroi%C4%8Da"> Juta Kroiča</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives Smokeless tobacco products in Latvia become more available and favorable to young adults, especially students and athletes like hockey and floorball players. The aim of the research was to detect visual mucosal changes in the oral cavity in smokeless tobacco users and to evaluate pro - inflammatory and anti - inflammatory cytokine (IL-6, IL-1, IL-8, TNF Alpha) levels in saliva from smokeless tobacco users. Methods A smokeless tobacco group (n=10) and a control group (non-tobacco users) (n=10) were intraorally examined for oral lesions and 5 ml of saliva were collected. Saliva was analysed for Il-6, IL-1, Il-8, TNF Alpha using ELISA Sigma-Aldrich. For statistical analysis IBM Statistics 27 was used (Mann - Whitney U test, Spearman’s Rank Correlation coefficient). This research was approved by the Ethics Committee of Rīga Stradiņš University No.22/28.01.2016. This research has been developed with financing from the European Social Fund and Latvian state budget within the project no. 8.2.2.0/20/I/004 “Support for involving doctoral students in scientific research and studies” at Rīga Stradiņš University. Results IL-1, IL-6, IL-8, TNF Alpha levels were higher in the smokeless tobacco group (IL-1 83.34 pg/ml vs. 74.26 pg/ml; IL-6 195.10 pg/ml vs. 6.16 pg/ml; IL-8 736.34 pg/ml vs. 285.26 pg/ml; TNF Alpha 489.27 pg/ml vs. 200.9 pg/ml), but statistically there is no difference between control group and smokeless tobacco group (IL1 p=0.190, IL6 p=0.052, IL8 p=0.165, TNF alpha p=0.089). There was statistical correlation between IL1 and IL6 (p=0.023), IL6 and TNF alpha (p=0.028), IL8 and IL6 (p=0.005). Conclusions White localized lesions were detected in places where smokeless tobacco users placed sachets. There is a statistical correlation between IL6 and IL1 levels, IL6 and TNF alpha levels, IL8 and IL6 levels in saliva. There are no differences in the inflammatory cytokine levels between control group and smokeless tobacco group. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smokeless%20tobacco" title="smokeless tobacco">smokeless tobacco</a>, <a href="https://publications.waset.org/abstracts/search?q=Snus" title=" Snus"> Snus</a>, <a href="https://publications.waset.org/abstracts/search?q=inflammatory%20biomarkers" title=" inflammatory biomarkers"> inflammatory biomarkers</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20lesions" title=" oral lesions"> oral lesions</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20pathology" title=" oral pathology"> oral pathology</a> </p> <a href="https://publications.waset.org/abstracts/145963/smokeless-tobacco-oral-manifestation-and-inflammatory-biomarkers-in-saliva" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145963.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">139</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">732</span> Effect of Thermal Treatment on Phenolic Content, Antioxidant, and Alpha-Amylase Inhibition Activities of Moringa stenopetala Leaves</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Assefa">Daniel Assefa</a>, <a href="https://publications.waset.org/abstracts/search?q=Engeda%20Dessalegn"> Engeda Dessalegn</a>, <a href="https://publications.waset.org/abstracts/search?q=Chetan%20Chauhan"> Chetan Chauhan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Moringa stenopetala is a socioeconomic valued tree that is widely available and cultivated in the Southern part of Ethiopia. The leaves have been traditionally used as a food source with high nutritional and medicinal values. The present work was carried out to evaluate the effect of thermal treatment on the total phenolic content, antioxidant and alpha-amylase inhibition activities of aqueous leaf extracts during maceration and different decoction time interval (5, 10 and 15 min). The total phenolic content was determined by the Folin-ciocalteu methods whereas antioxidant activities were determined by 2,2-diphenyl-1-picryl-hydrazyl(DPPH) radical scavenging, reducing power and ferrous ion chelating assays and alpha-amylase inhibition activity was determined using 3,5-dinitrosalicylic acid method. Total phenolic content ranged from 34.35 to 39.47 mgGAE/g. Decoction for 10 min extract showed ferrous ion chelating (92.52), DPPH radical scavenging (91.52%), alpha-amylase inhibition (69.06%) and ferric reducing power (0.765), respectively. DPPH, reducing power and alpha-amylase inhibition activities showed positive linear correlation (R2=0.853, R2= 0.857 and R2=0.930), respectively with total phenolic content but ferrous ion chelating activity was found to be weakly correlated (R2=0.481). Based on the present investigation, it could be concluded that major loss of total phenolic content, antioxidant and alpha-amylase inhibition activities of the crude leaf extracts of Moringa stenopetala leaves were observed at decoction time for 15 min. Therefore, to maintain the total phenolic content, antioxidant, and alpha-amylase inhibition activities of leaves, cooking practice should be at the optimum decoction time (5-10 min). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha-amylase%20inhibition" title="alpha-amylase inhibition">alpha-amylase inhibition</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title=" antioxidant"> antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=Moringa%20stenopetala" title=" Moringa stenopetala"> Moringa stenopetala</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20phenolic%20content" title=" total phenolic content"> total phenolic content</a> </p> <a href="https://publications.waset.org/abstracts/51567/effect-of-thermal-treatment-on-phenolic-content-antioxidant-and-alpha-amylase-inhibition-activities-of-moringa-stenopetala-leaves" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51567.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">361</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">731</span> Selective Effect of Occipital Alpha Transcranial Alternating Current Stimulation in Perception and Working Memory</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andreina%20Giustiniani">Andreina Giustiniani</a>, <a href="https://publications.waset.org/abstracts/search?q=Massimiliano%20Oliveri"> Massimiliano Oliveri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Rhythmic activity in different frequencies could subserve distinct functional roles during visual perception and visual mental imagery. In particular, alpha band activity is thought to play a role in active inhibition of both task-irrelevant regions and processing of non-relevant information. In the present blind placebo-controlled study we applied alpha transcranial alternating current stimulation (tACS) in the occipital cortex both during a basic visual perception and a visual working memory task. To understand if the role of alpha is more related to a general inhibition of distractors or to an inhibition of task-irrelevant regions, we added a non visual distraction to both the tasks.Sixteen adult volunteers performed both a simple perception and a working memory task during 10 Hz tACS. The electrodes were placed over the left and right occipital cortex, the current intensity was 1 mA peak-to-baseline. Sham stimulation was chosen as control condition and in order to elicit the skin sensation similar to the real stimulation, electrical stimulation was applied for short periods (30 s) at the beginning of the session and then turned off. The tasks were split in two sets, in one set distracters were included and in the other set, there were no distracters. Motor interference was added by changing the answer key after subjects completed the first set of trials.The results show that alpha tACS improves working memory only when no motor distracters are added, suggesting a role of alpha tACS in inhibiting non-relevant regions rather than in a general inhibition of distractors. Additionally, we found that alpha tACS does not affect accuracy and hit rates during the visual perception task. These results suggest that alpha activity in the occipital cortex plays a different role in perception and working memory and it could optimize performance in tasks in which attention is internally directed, as in this working memory paradigm, but only when there is not motor distraction. Moreover, alpha tACS improves working memory performance by means of inhibition of task-irrelevant regions while it does not affect perception. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20activity" title="alpha activity">alpha activity</a>, <a href="https://publications.waset.org/abstracts/search?q=interference" title=" interference"> interference</a>, <a href="https://publications.waset.org/abstracts/search?q=perception" title=" perception"> perception</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20memory" title=" working memory"> working memory</a> </p> <a href="https://publications.waset.org/abstracts/76939/selective-effect-of-occipital-alpha-transcranial-alternating-current-stimulation-in-perception-and-working-memory" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76939.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">730</span> Diagnostics via Biophysical Resistotrons</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matt%20Vellkorn">Matt Vellkorn</a>, <a href="https://publications.waset.org/abstracts/search?q=Mara%20Sarinski"> Mara Sarinski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The field of advanced diagnostics is a very rapidly changing one. A new technology that has not been fully used yet are resistotrons. A resistotron is a physical device thatis used to detect the presence of low energy alpha particles. It has been used for many years in nuclear physics as an alpha particle detector. Since they are used in nuclear physics, they have to be accurate. They have to be able to differentiate between alpha particles and other types of radiation. The resistotrons are primarily used for safety. They are used in areas where people or animals can get exposed to radiation. A typical example is in the treatment of nuclear waste. As it is with any nuclear physics instrument, a resistotron has to be very accurate and reliable. In the past, the instrument was very expensive because they were made out of copper. Today, they are made out of brass. The main difference is that brass is much less expensive than copper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosensors" title="biosensors">biosensors</a>, <a href="https://publications.waset.org/abstracts/search?q=resistotrons" title=" resistotrons"> resistotrons</a>, <a href="https://publications.waset.org/abstracts/search?q=biophysics" title=" biophysics"> biophysics</a>, <a href="https://publications.waset.org/abstracts/search?q=diagnostics" title=" diagnostics"> diagnostics</a> </p> <a href="https://publications.waset.org/abstracts/148720/diagnostics-via-biophysical-resistotrons" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148720.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">122</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">729</span> Alpha: A Groundbreaking Avatar Merging User Dialogue with OpenAI's GPT-3.5 for Enhanced Reflective Thinking</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jonas%20Colin">Jonas Colin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Standing at the vanguard of AI development, Alpha represents an unprecedented synthesis of logical rigor and human abstraction, meticulously crafted to mirror the user's unique persona and personality, a feat previously unattainable in AI development. Alpha, an avant-garde artefact in the realm of artificial intelligence, epitomizes a paradigmatic shift in personalized digital interaction, amalgamating user-specific dialogic patterns with the sophisticated algorithmic prowess of OpenAI's GPT-3.5 to engender a platform for enhanced metacognitive engagement and individualized user experience. Underpinned by a sophisticated algorithmic framework, Alpha integrates vast datasets through a complex interplay of neural network models and symbolic AI, facilitating a dynamic, adaptive learning process. This integration enables the system to construct a detailed user profile, encompassing linguistic preferences, emotional tendencies, and cognitive styles, tailoring interactions to align with individual characteristics and conversational contexts. Furthermore, Alpha incorporates advanced metacognitive elements, enabling real-time reflection and adaptation in communication strategies. This self-reflective capability ensures continuous refinement of its interaction model, positioning Alpha not just as a technological marvel but as a harbinger of a new era in human-computer interaction, where machines engage with us on a deeply personal and cognitive level, transforming our interaction with the digital world. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chatbot" title="chatbot">chatbot</a>, <a href="https://publications.waset.org/abstracts/search?q=GPT%203.5" title=" GPT 3.5"> GPT 3.5</a>, <a href="https://publications.waset.org/abstracts/search?q=metacognition" title=" metacognition"> metacognition</a>, <a href="https://publications.waset.org/abstracts/search?q=symbiose" title=" symbiose"> symbiose</a> </p> <a href="https://publications.waset.org/abstracts/181232/alpha-a-groundbreaking-avatar-merging-user-dialogue-with-openais-gpt-35-for-enhanced-reflective-thinking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181232.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">70</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">728</span> Study of the Kinetic of the Reduction of Alpha and Beta PbO2 in H2SO4 on the Microcavity Electrode </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Chahmana">N. Chahmana</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Zerroual"> I. Zerroual</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of our work is the contribution to the improvement of the performances of the positive plate of the lead acid battery. For that, we synthesized two varieties of PbO2 used in industry, alpha and beta PbO2 by electrochemical way starting from the not formed industrial plates. We studied the kinetics of reduction of the alpha varieties and PbO2 beta on electrode with microcavity in sulphuric medium. The electrochemical study of the powders of α and β-PbO2 was made by cyclic voltamperometry with sweeping of potential by using a traditional assembly with three electrodes. Values of the coefficient of diffusion of the proton in α and β-PbO2 are respectively equal to 0.498*10-8cm2 /s and 0.793*10-8 cm2 /s. During the cycling of the two varieties of PbO2, we obtain a clear increase in the capacity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lead%20accumulator" title="lead accumulator">lead accumulator</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B1%20and%20%CE%B2%20-%20PbO2" title=" α and β - PbO2"> α and β - PbO2</a>, <a href="https://publications.waset.org/abstracts/search?q=synthesis" title=" synthesis"> synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=kinetics" title=" kinetics"> kinetics</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic%20voltametry" title=" cyclic voltametry"> cyclic voltametry</a>, <a href="https://publications.waset.org/abstracts/search?q=coefficient%20of%20diffusion" title=" coefficient of diffusion"> coefficient of diffusion</a> </p> <a href="https://publications.waset.org/abstracts/22434/study-of-the-kinetic-of-the-reduction-of-alpha-and-beta-pbo2-in-h2so4-on-the-microcavity-electrode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22434.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">577</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">727</span> Processing Studies and Challenges Faced in Development of High-Pressure Titanium Alloy Cryogenic Gas Bottles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bhanu%20Pant">Bhanu Pant</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20H.%20Upadhyay"> Sanjay H. Upadhyay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Frequently, the upper stage of high-performance launch vehicles utilizes cryogenic tank-submerged pressurization gas bottles with high volume-to-weight efficiency to achieve a direct gain in the satellite payload. Titanium alloys, owing to their high specific strength coupled with excellent compatibility with various fluids, are the materials of choice for these applications. Amongst the Titanium alloys, there are two alloys suitable for cryogenic applications, namely Ti6Al4V-ELI and Ti5Al2.5Sn-ELI. The two-phase alpha-beta alloy Ti6Al4V-ELI is usable up to LOX temperature of 90K, while the single-phase alpha alloy Ti5Al2.5Sn-ELI can be used down to LHe temperature of 4 K. The high-pressure gas bottles submerged in the LH2 (20K) can store more amount of gas in as compared to those submerged in LOX (90K) bottles the same volume. Thus, the use of these alpha alloy gas bottles stored at 20K gives a distinct advantage with respect to the need for a lesser number of gas bottles to store the same amount of high-pressure gas, which in turn leads to a one-to-one advantage in the payload in the satellite. The cost advantage to the tune of 15000$/ kg of weight is saved in the upper stages, and, thereby, the satellite payload gain is expected by this change. However, the processing of alpha Ti5Al2.5Sn-ELI alloy gas bottles poses challenges due to the lower forgeability of the alloy and mode of qualification for the critical severe application environment. The present paper describes the processing and challenges/ solutions during the development of these advanced gas bottles for LH2 (20K) applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=titanium%20alloys" title="titanium alloys">titanium alloys</a>, <a href="https://publications.waset.org/abstracts/search?q=cryogenic%20gas%20bottles" title=" cryogenic gas bottles"> cryogenic gas bottles</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha%20titanium%20alloy" title=" alpha titanium alloy"> alpha titanium alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha-beta%20titanium%20alloy" title=" alpha-beta titanium alloy"> alpha-beta titanium alloy</a> </p> <a href="https://publications.waset.org/abstracts/185204/processing-studies-and-challenges-faced-in-development-of-high-pressure-titanium-alloy-cryogenic-gas-bottles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185204.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">57</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">726</span> Effects of Alpha Lipoic Acid on Limb Lengths in Neonatal Rats Exposed to Maternal Tobacco Smoke</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ramazan%20F.%20Akkoc">Ramazan F. Akkoc</a>, <a href="https://publications.waset.org/abstracts/search?q=Elif%20Erdem"> Elif Erdem</a>, <a href="https://publications.waset.org/abstracts/search?q=Nalan%20Kaya"> Nalan Kaya</a>, <a href="https://publications.waset.org/abstracts/search?q=Gonca%20Ozan"> Gonca Ozan</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20%C3%96zlem%20Dabak"> D. Özlem Dabak</a>, <a href="https://publications.waset.org/abstracts/search?q=Enver%20Ozan"> Enver Ozan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Maternal tobacco smoke exposure is known to cause growth retardation in the neonatal skeletal system. Alpha lipoic acid, a natural antioxidant found in some foods, limits the activities of osteoclasts and supports the osteoblast's bone formation mechanism. In this study, it was aimed to investigate the effects of alpha lipoic acid (ALA) on the height, long bones and tail lengths of pups exposed to maternal tobacco smoke. The rats were divided into four groups: 1) control group, 2) tobacco smoke group, 3) tobacco smoke + ALA group, and 4) ALA group. Rats in the group 2 (tobacco smoke), group 3 (tobacco smoke + ALA) were exposed to tobacco smoke twice a day for one hour starting from eight weeks before mating and during pregnancy. In addition to tobacco smoke, 20 mg/kg of alpha lipoic acid was administered via oral gavage to the rats in the group 3 (tobacco smoke + ALA). Only alpha lipoic acid was administered to the rats in the group 4. On day 21 postpartum, the height and tail lengths of the pups in all groups were measured, and the length of the extremity long bones was measured after decapitation. All morphometric measurements performed in group 2 (tobacco smoke) showed a significant decrease compared to group 1 (control), while all measurements in group 3 (tobacco smoke + ALA) showed a significant increase compared to group 2 (tobacco smoke). It has been shown that ALA has a protective effect against the regression of height, long bones and tail lengths of pups exposed to maternal tobacco smoke. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20lipoic%20acid" title="alpha lipoic acid">alpha lipoic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=bone" title=" bone"> bone</a>, <a href="https://publications.waset.org/abstracts/search?q=morphometry" title=" morphometry"> morphometry</a>, <a href="https://publications.waset.org/abstracts/search?q=rat" title=" rat"> rat</a>, <a href="https://publications.waset.org/abstracts/search?q=tobacco%20smoke" title=" tobacco smoke"> tobacco smoke</a> </p> <a href="https://publications.waset.org/abstracts/74245/effects-of-alpha-lipoic-acid-on-limb-lengths-in-neonatal-rats-exposed-to-maternal-tobacco-smoke" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74245.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">366</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">725</span> Modeling of Oligomerization of Ethylene in a Falling film Reactor for the Production of Linear Alpha Olefins</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adil%20A.%20Mohammed">Adil A. Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=Seif-Eddeen%20K.%20Fateen"> Seif-Eddeen K. Fateen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamer%20S.%20Ahmed"> Tamer S. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20M.%20Moustafa"> Tarek M. Moustafa </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Falling film were widely used for gas-liquid absorption and reaction process. Modeling of falling film for oligomerization of ethylene reaction to linear alpha olefins is developed. Although there are many researchers discuss modeling of falling film in many processes, there has been no publish study the simulation of falling film for the oligomerization of ethylene reaction to produce linear alpha olefins. The Comsol multiphysics software was used to simulate the mass transfer with chemical reaction in falling film absorption process. The effect of concentration profile absorption of the products through falling thickness is discussed. The effect of catalyst concentration, catalyst/co-catalyst ratio, and temperature is also studied. For the effect of the temperature, as it increase the concentration of C4 increase. For catalyst concentration and catalyst/co-catalyst ratio as they increases the concentration of C4 increases, till it reached almost constant value. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=falling%20film" title="falling film">falling film</a>, <a href="https://publications.waset.org/abstracts/search?q=oligomerization" title=" oligomerization"> oligomerization</a>, <a href="https://publications.waset.org/abstracts/search?q=comsol%20mutiphysics" title=" comsol mutiphysics"> comsol mutiphysics</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20alpha%20olefins" title=" linear alpha olefins"> linear alpha olefins</a> </p> <a href="https://publications.waset.org/abstracts/23890/modeling-of-oligomerization-of-ethylene-in-a-falling-film-reactor-for-the-production-of-linear-alpha-olefins" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23890.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">470</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">724</span> The Effect of Mental Workload Towards Mental Fatigue on Customer Care Agent Using Electroencephalogram</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maya%20Arlini%20Puspasari">Maya Arlini Puspasari</a>, <a href="https://publications.waset.org/abstracts/search?q=Shafira%20Karamina%20Alifah"> Shafira Karamina Alifah</a>, <a href="https://publications.waset.org/abstracts/search?q=Hardianto%20Iridiastadi"> Hardianto Iridiastadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High mental workload can lead to fatigue and further result in decreased concentration and work performance. This study is conducted to see the effects of mental workload towards mental fatigue. Mental fatigue measurement was conducted at the first and the last 10 minutes of the working time using electroencephalogram, while mental workload measurement was conducted after the work is completed using the NASA-TLX questionnaire. The result shows that there is an increase in alpha band which indicates an increase in mental fatigue. This study also shows absolute alpha is more sensitive compared to the relative alpha. This study proves that there is a relationship between mental workload and mental fatigue although not relatively strong. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mental%20workload" title="mental workload">mental workload</a>, <a href="https://publications.waset.org/abstracts/search?q=electroencephalogram" title=" electroencephalogram"> electroencephalogram</a>, <a href="https://publications.waset.org/abstracts/search?q=customer%20care%20agents" title=" customer care agents"> customer care agents</a>, <a href="https://publications.waset.org/abstracts/search?q=NASA-TLX" title=" NASA-TLX"> NASA-TLX</a> </p> <a href="https://publications.waset.org/abstracts/55448/the-effect-of-mental-workload-towards-mental-fatigue-on-customer-care-agent-using-electroencephalogram" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55448.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">223</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">723</span> Reliability Evidence of the Child Behavior Checklist (CBCL) Based on a Chinese Sample</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhidong%20Zhang">Zhidong Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhi-Chao%20Zhang"> Zhi-Chao Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgiana%20Duarte"> Georgiana Duarte</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Chinese version of the Child Behavior Checklist (CBCL) is the one of the Achenbach systems of empirically based assessment (ASEBA) scales, by which behavioral and emotional problems of early adolescents were examined. In order to further understand the robustness of the scale, its reliability has been examined. CBCL consists of 8 problems to measure internalizing, externalizing and social problems. In internalizing problem, there are Anxious, Withdrawn and Somatic Complaints. In this study, as an example, we only examined the anxious aspect which consisted of 13 questions. Cronbach alpha and factor analysis methods were used to examine the reliability of the scale. The result indicated that Cronbach alpha value was above 0.80. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anxious%2Fdepressed%20problems" title="anxious/depressed problems">anxious/depressed problems</a>, <a href="https://publications.waset.org/abstracts/search?q=ASEBA" title=" ASEBA"> ASEBA</a>, <a href="https://publications.waset.org/abstracts/search?q=CBCL" title=" CBCL"> CBCL</a>, <a href="https://publications.waset.org/abstracts/search?q=Cronbach%20Alpha" title=" Cronbach Alpha"> Cronbach Alpha</a>, <a href="https://publications.waset.org/abstracts/search?q=reliability" title=" reliability"> reliability</a> </p> <a href="https://publications.waset.org/abstracts/58362/reliability-evidence-of-the-child-behavior-checklist-cbcl-based-on-a-chinese-sample" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58362.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">463</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">722</span> Investigation of Possible Behavioural and Molecular Effects of Mobile Phone Exposure on Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=%C3%87.%20G%C3%B6k%C3%A7ek-Sara%C3%A7">Ç. Gökçek-Saraç</a>, <a href="https://publications.waset.org/abstracts/search?q=%C5%9E.%20%C3%96zen"> Ş. Özen</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Derin"> N. Derin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The N-methyl-D-aspartate (NMDA)-dependent pathway is the major intracellular signaling pathway implemented in both short- and long-term memory formation in the hippocampus which is the most studied brain structure because of its well documented role in learning and memory. However, little is known about the effects of RF-EMR exposure on NMDA receptor signaling pathway including activation of protein kinases, notably Ca<sup>2+</sup>/calmodulin-dependent protein kinase II alpha (CaMKIIα). The aim of the present study was to investigate the effects of acute and chronic 900 MHz RF-EMR exposure on both passive avoidance behaviour and hippocampal levels of CaMKIIα and its phosphorylated form (pCaMKIIα). Rats were divided into the following groups: Sham rats, and rats exposed to 900 MHz RF-EMR for 2 h/day for 1 week (acute group) or 10 weeks (chronic group), respectively. Passive avoidance task was used as a behavioural method. The hippocampal levels of selected kinases were measured using Western Blotting technique. The results of passive avoidance task showed that both acute and chronic exposure to 900 MHz RF-EMR can impair passive avoidance behaviour with minor effects on chronic group of rats. The analysis of western blot data of selected protein kinases demonstrated that hippocampal levels of CaMKIIα and pCaMKIIα were significantly higher in chronic group of rats as compared to acute groups. Taken together, these findings demonstrated that different duration times (1 week vs 10 weeks) of 900 MHz RF-EMR exposure have different effects on both passive avoidance behaviour of rats and hippocampal levels of selected protein kinases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hippocampus" title="hippocampus">hippocampus</a>, <a href="https://publications.waset.org/abstracts/search?q=protein%20kinase" title=" protein kinase"> protein kinase</a>, <a href="https://publications.waset.org/abstracts/search?q=rat" title=" rat"> rat</a>, <a href="https://publications.waset.org/abstracts/search?q=RF-EMR" title=" RF-EMR"> RF-EMR</a> </p> <a href="https://publications.waset.org/abstracts/68567/investigation-of-possible-behavioural-and-molecular-effects-of-mobile-phone-exposure-on-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68567.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">255</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">721</span> Electroencephalogram during Natural Reading: Theta and Alpha Rhythms as Analytical Tools for Assessing a Reader’s Cognitive State</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Zhigulskaya">D. Zhigulskaya</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Anisimov"> V. Anisimov</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Pikunov"> A. Pikunov</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Babanova"> K. Babanova</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Zuev"> S. Zuev</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Latyshkova"> A. Latyshkova</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20%D0%A1hernozatonskiy"> K. Сhernozatonskiy</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Revazov"> A. Revazov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electrophysiology of information processing in reading is certainly a popular research topic. Natural reading, however, has been relatively poorly studied, despite having broad potential applications for learning and education. In the current study, we explore the relationship between text categories and spontaneous electroencephalogram (EEG) while reading. Thirty healthy volunteers (mean age 26,68 ± 1,84) participated in this study. 15 Russian-language texts were used as stimuli. The first text was used for practice and was excluded from the final analysis. The remaining 14 were opposite pairs of texts in one of 7 categories, the most important of which were: interesting/boring, fiction/non-fiction, free reading/reading with an instruction, reading a text/reading a pseudo text (consisting of strings of letters that formed meaningless words). Participants had to read the texts sequentially on an Apple iPad Pro. EEG was recorded from 12 electrodes simultaneously with eye movement data via ARKit Technology by Apple. EEG spectral amplitude was analyzed in Fz for theta-band (4-8 Hz) and in C3, C4, P3, and P4 for alpha-band (8-14 Hz) using the Friedman test. We found that reading an interesting text was accompanied by an increase in theta spectral amplitude in Fz compared to reading a boring text (3,87 µV ± 0,12 and 3,67 µV ± 0,11, respectively). When instructions are given for reading, we see less alpha activity than during free reading of the same text (3,34 µV ± 0,20 and 3,73 µV ± 0,28, respectively, for C4 as the most representative channel). The non-fiction text elicited less activity in the alpha band (C4: 3,60 µV ± 0,25) than the fiction text (C4: 3,66 µV ± 0,26). A significant difference in alpha spectral amplitude was also observed between the regular text (C4: 3,64 µV ± 0,29) and the pseudo text (C4: 3,38 µV ± 0,22). These results suggest that some brain activity we see on EEG is sensitive to particular features of the text. We propose that changes in theta and alpha bands during reading may serve as electrophysiological tools for assessing the reader’s cognitive state as well as his or her attitude to the text and the perceived information. These physiological markers have prospective practical value for developing technological solutions and biofeedback systems for reading in particular and for education in general. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EEG" title="EEG">EEG</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20reading" title=" natural reading"> natural reading</a>, <a href="https://publications.waset.org/abstracts/search?q=reader%27s%20cognitive%20state" title=" reader's cognitive state"> reader's cognitive state</a>, <a href="https://publications.waset.org/abstracts/search?q=theta-rhythm" title=" theta-rhythm"> theta-rhythm</a>, <a href="https://publications.waset.org/abstracts/search?q=alpha-rhythm" title=" alpha-rhythm"> alpha-rhythm</a> </p> <a href="https://publications.waset.org/abstracts/154843/electroencephalogram-during-natural-reading-theta-and-alpha-rhythms-as-analytical-tools-for-assessing-a-readers-cognitive-state" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154843.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">80</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">720</span> Comparison of Particle Size for ɑ(Alpha) Fe2O3 and ɤ(Gamma)Fe2O3 on Heat Transfer Performance in an Copper Oscillating Heat Pipe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamid%20Reza%20Goshayeshi">Hamid Reza Goshayeshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of ɑ(alpha) Fe2O3 and ɤ(gamma)Fe2O3 particles on the heat transfer performance of an oscillating heat pipe was investigated experimentally. Kerosene was used as the base ﬂuid for the OHP. Six size particles with average diameters of 10 nm, 20 nm, and 30 nm ɑFe2O3 and ɤFe2O3 were investigated, respectively. Experimental results show that the ɤFe2O3 particles added in the OHP signiﬁcantly affect the heat transfer performance. When the OHP was charged with kerosene and 20 nm ɤ Fe2O3 particles, the OHP can achieve the best heat transfer performance among six particles investigated in this research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=copper%20oscillating%20heat%20pipe" title="copper oscillating heat pipe">copper oscillating heat pipe</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=flow" title=" flow"> flow</a>, <a href="https://publications.waset.org/abstracts/search?q=comparison%20of%20%C9%91%28alpha%29Fe2O3%20and%20%C9%A4%28gamma%29Fe2O3" title=" comparison of ɑ(alpha)Fe2O3 and ɤ(gamma)Fe2O3"> comparison of ɑ(alpha)Fe2O3 and ɤ(gamma)Fe2O3</a>, <a href="https://publications.waset.org/abstracts/search?q=increase%20heat%20transfer" title=" increase heat transfer"> increase heat transfer</a> </p> <a href="https://publications.waset.org/abstracts/41818/comparison-of-particle-size-for-alpha-fe2o3-and-gammafe2o3-on-heat-transfer-performance-in-an-copper-oscillating-heat-pipe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41818.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">318</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">719</span> On Quasi Conformally Flat LP-Sasakian Manifolds with a Coefficient α</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jay%20Prakash%20Singh">Jay Prakash Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present paper is to study properties of Quasi conformally flat LP-Sasakian manifolds with a coefficient α. In this paper, we prove that a Quasi conformally flat LP-Sasakian manifold M (n > 3) with a constant coefficient α is an η−Einstein and in a quasi conformally flat LP-Sasakian manifold M (n > 3) with a constant coefficient α if the scalar curvature tensor is constant then M is of constant curvature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LP-Sasakian%20manifolds" title="LP-Sasakian manifolds">LP-Sasakian manifolds</a>, <a href="https://publications.waset.org/abstracts/search?q=quasi-conformal%20curvature%20tensor" title=" quasi-conformal curvature tensor"> quasi-conformal curvature tensor</a>, <a href="https://publications.waset.org/abstracts/search?q=concircular%20vector%20%0Cfield" title=" concircular vector field"> concircular vector field</a>, <a href="https://publications.waset.org/abstracts/search?q=torse%20forming%20vector%20%0Cfield" title=" torse forming vector field"> torse forming vector field</a>, <a href="https://publications.waset.org/abstracts/search?q=Einstein%20manifold" title=" Einstein manifold"> Einstein manifold</a> </p> <a href="https://publications.waset.org/abstracts/50415/on-quasi-conformally-flat-lp-sasakian-manifolds-with-a-coefficient-a" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50415.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">792</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">718</span> Degree of Approximation of Functions by Product Means</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hare%20Krishna%20Nigam">Hare Krishna Nigam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, for the first time, (E,q)(C,2) product summability method is introduced and two quite new results on degree of approximation of the function f belonging to Lip (alpha,r)class and W(L(r), xi(t)) class by (E,q)(C,2) product means of Fourier series, has been obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Degree%20of%20approximation" title="Degree of approximation">Degree of approximation</a>, <a href="https://publications.waset.org/abstracts/search?q=%28E" title=" (E"> (E</a>, <a href="https://publications.waset.org/abstracts/search?q=q%29%28C" title="q)(C">q)(C</a>, <a href="https://publications.waset.org/abstracts/search?q=2%29%20means" title="2) means">2) means</a>, <a href="https://publications.waset.org/abstracts/search?q=Fourier%20series" title=" Fourier series"> Fourier series</a>, <a href="https://publications.waset.org/abstracts/search?q=Lebesgue%20integral" title=" Lebesgue integral"> Lebesgue integral</a>, <a href="https://publications.waset.org/abstracts/search?q=Lip%20%28alpha" title=" Lip (alpha"> Lip (alpha</a>, <a href="https://publications.waset.org/abstracts/search?q=r%29class" title="r)class">r)class</a>, <a href="https://publications.waset.org/abstracts/search?q=W%28L%28r%29" title=" W(L(r)"> W(L(r)</a>, <a href="https://publications.waset.org/abstracts/search?q=xi%28t%29%29class%20of%20%20functions" title="xi(t))class of functions">xi(t))class of functions</a> </p> <a href="https://publications.waset.org/abstracts/32235/degree-of-approximation-of-functions-by-product-means" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32235.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">517</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">717</span> An Introduction to the Radiation-Thrust Based on Alpha Decay and Spontaneous Fission</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shiyi%20He">Shiyi He</a>, <a href="https://publications.waset.org/abstracts/search?q=Yan%20Xia"> Yan Xia</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaoping%20Ouyang"> Xiaoping Ouyang</a>, <a href="https://publications.waset.org/abstracts/search?q=Liang%20Chen"> Liang Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhongbing%20Zhang"> Zhongbing Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinlu%20Ruan"> Jinlu Ruan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As the key system of the spacecraft, various propelling system have been developing rapidly, including ion thrust, laser thrust, solar sail and other micro-thrusters. However, there still are some shortages in these systems. The ion thruster requires the high-voltage or magnetic field to accelerate, resulting in extra system, heavy quantity and large volume. The laser thrust now is mostly ground-based and providing pulse thrust, restraint by the station distribution and the capacity of laser. The thrust direction of solar sail is limited to its relative position with the Sun, so it is hard to propel toward the Sun or adjust in the shadow.In this paper, a novel nuclear thruster based on alpha decay and spontaneous fission is proposed and the principle of this radiation-thrust with alpha particle has been expounded. Radioactive materials with different released energy, such as 210Po with 5.4MeV and 238Pu with 5.29MeV, attached to a metal film will provides various thrust among 0.02-5uN/cm2. With this repulsive force, radiation is able to be a power source. With the advantages of low system quantity, high accuracy and long active time, the radiation thrust is promising in the field of space debris removal, orbit control of nano-satellite array and deep space exploration. To do further study, a formula lead to the amplitude and direction of thrust by the released energy and decay coefficient is set up. With the initial formula, the alpha radiation elements with the half life period longer than a hundred days are calculated and listed. As the alpha particles emit continuously, the residual charge in metal film grows and affects the emitting energy distribution of alpha particles. With the residual charge or extra electromagnetic field, the emitting of alpha particles performs differently and is analyzed in this paper. Furthermore, three more complex situations are discussed. Radiation element generating alpha particles with several energies in different intensity, mixture of various radiation elements, and cascaded alpha decay are studied respectively. In combined way, it is more efficient and flexible to adjust the thrust amplitude. The propelling model of the spontaneous fission is similar with the one of alpha decay, which has a more complex angular distribution. A new quasi-sphere space propelling system based on the radiation-thrust has been introduced, as well as the collecting and processing system of excess charge and reaction heat. The energy and spatial angular distribution of emitting alpha particles on unit area and certain propelling system have been studied. As the alpha particles are easily losing energy and self-absorb, the distribution is not the simple stacking of each nuclide. With the change of the amplitude and angel of radiation-thrust, orbital variation strategy on space debris removal is shown and optimized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alpha%20decay" title="alpha decay">alpha decay</a>, <a href="https://publications.waset.org/abstracts/search?q=angular%20distribution" title=" angular distribution"> angular distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=emitting%20energy" title=" emitting energy"> emitting energy</a>, <a href="https://publications.waset.org/abstracts/search?q=orbital%20variation" title=" orbital variation"> orbital variation</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation-thruster" title=" radiation-thruster"> radiation-thruster</a> </p> <a href="https://publications.waset.org/abstracts/86729/an-introduction-to-the-radiation-thrust-based-on-alpha-decay-and-spontaneous-fission" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86729.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">208</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">716</span> Evaluation of Three Potato Cultivars for Processing (Crisp French Fries)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hatim%20Bastawi">Hatim Bastawi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Three varieties of potatoes, namely Agria, Alpha and Diamant were evaluated for their suitability for industrial production of French fries. The evaluation was under taken after testing quality parameters of specific gravity, dry matter, peeling ratio, and defect after frying and panel test. The variety Agria ranked the best followed by Alpha with regard to the parameters tested. On the other hand, Diamant showed significantly higher defect percentage than the other cultivars. Also, it was significantly judged of low acceptance by panelists. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cultivars" title="cultivars">cultivars</a>, <a href="https://publications.waset.org/abstracts/search?q=crisps" title=" crisps"> crisps</a>, <a href="https://publications.waset.org/abstracts/search?q=French%20fries" title=" French fries"> French fries</a> </p> <a href="https://publications.waset.org/abstracts/40023/evaluation-of-three-potato-cultivars-for-processing-crisp-french-fries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40023.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">261</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 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