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Huong</title> <meta name="description" content="Search results for: Pham-Thi Huong"> <meta name="keywords" content="Pham-Thi Huong"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Pham-Thi Huong"> <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> 35</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Pham-Thi Huong</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> Effect of Initial pH and Fermentation Duration on Total Phenolic Content and Antioxidant Activity of Carob Kibble Fermented with Saccharomyces cerevisiae</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thi%20Huong%20Vu">Thi Huong Vu</a>, <a href="https://publications.waset.org/abstracts/search?q=Haelee%20Fenton"> Haelee Fenton</a>, <a href="https://publications.waset.org/abstracts/search?q=Thi%20Huong%20Tra%20Nguyen"> Thi Huong Tra Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Gary%20Dykes"> Gary Dykes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study, a submerged fermentation of carob kibble with Saccharomyces cerevisiae (S. cerevisiae) was performed. The total phenolic content and antioxidant activity in fermented carob kibble were determined by Folin–Ciocalteu method and scavenging capacity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS). The study showed that S. cerevisiae improved total phenolic content by 45 % and 50 % in acetone and water extracts respectively. Similarly, the antioxidant capacity of water extracts increased by 25 % and 41%, while acetone extracts indicated by 70% and 80% in DPPH and ABTS respectively. It is also found that initial pH 7.0 was more effective in improvement of total phenolic content and antioxidant activity. The efficiency of treatment was recorded at 15 h. This report suggested that submerged fermentation with S. cerevisiae is a potential and cost effective manner to further increase bioactive compounds in carob kibble, which are in use for food, cosmetic and pharmaceutical industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title="antioxidant activity">antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=carob%20kibble" title=" carob kibble"> carob kibble</a>, <a href="https://publications.waset.org/abstracts/search?q=saccharomyces%20cerevisiae" title=" saccharomyces cerevisiae"> saccharomyces cerevisiae</a>, <a href="https://publications.waset.org/abstracts/search?q=submerged%20fermentation" title=" submerged fermentation"> submerged fermentation</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20phenolics" title=" total phenolics"> total phenolics</a> </p> <a href="https://publications.waset.org/abstracts/54669/effect-of-initial-ph-and-fermentation-duration-on-total-phenolic-content-and-antioxidant-activity-of-carob-kibble-fermented-with-saccharomyces-cerevisiae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54669.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">306</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">34</span> Trions in Semiconductor Quantum Dot System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jayden%20Leonard">Jayden Leonard</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Que%20Huong"> Nguyen Que Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we study the Trion state in a spherical quantum dot of a direct band gap semiconductor with a shell of organic material. The electronic structure of the Trion due to degenerate valence band will be considered. The coupling between the wannier exciton inside the dot and the Frenkel exciton in the shell will make the Trion state become hybrid. The competition between “semiconductor” and “organic” phases of the Trion and the transitions between them depend on Parameters of the system such as the materials, the size of the dot and the thickness of the shell, etc… and could be manipulated using those parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=trion" title="trion">trion</a>, <a href="https://publications.waset.org/abstracts/search?q=exciton" title=" exciton"> exciton</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20dot" title=" quantum dot"> quantum dot</a>, <a href="https://publications.waset.org/abstracts/search?q=heterostructure" title=" heterostructure"> heterostructure</a> </p> <a href="https://publications.waset.org/abstracts/143644/trions-in-semiconductor-quantum-dot-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143644.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">176</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">33</span> Removal of P-Nitrophenol in Wastewater by Using Fe-Nano Zeolite Synthesized</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pham-Thi%20Huong">Pham-Thi Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Byeong-Kyu%20Lee"> Byeong-Kyu Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi-Hyeon%20Lee"> Chi-Hyeon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=JiTae%20Kim"> JiTae Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study analyzed the removal of p-nitrophenol from wastewater using Fe-nano zeolite synthesized. The basic physical-chemical properties of Fe-nano zeolite was determined by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy. We focus on finding out the optimum conditions in adsorption and desorption processes for removal of p-nitrophenol by using Fe-nano zeolite in wastewater. The optimum pH for p-nitrophenol removal in wastewater was 5.0. Adsorption isotherms were better fitted with the Langmuir isotherm than with the Freundlich with 165.58 mg/g adsorption capacity of p-nitrophenol. These findings support potential of Fe-nano zeolite as an effective adsorbent for p-nitrophenol removal from wastewater. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fe-nano%20zeolite" title="Fe-nano zeolite">Fe-nano zeolite</a>, <a href="https://publications.waset.org/abstracts/search?q=adsorption" title=" adsorption"> adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater" title=" wastewater"> wastewater</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration" title=" regeneration"> regeneration</a> </p> <a href="https://publications.waset.org/abstracts/44511/removal-of-p-nitrophenol-in-wastewater-by-using-fe-nano-zeolite-synthesized" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44511.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">311</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Enhancement of CO2 Capture by Using Cu-Nano-Zeolite Synthesized</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pham-Thi%20Huong">Pham-Thi Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Byeong-Kyu%20Lee"> Byeong-Kyu Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi-Hyeon%20Lee"> Chi-Hyeon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Jitae%20Kim"> Jitae Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study synthesized Cu-nano-zeolite was evaluated for its potential use in CO2 capture. The specific surface area of Cu-nano zeolite was measured as 869.32 m2/g with a pore size of 3.86 nm. The adsorption capacity of CO2 by Cu-nano zeolite was decreased with increasing temperature. The identified adsorption capacity of CO2 by Cu-nano zeolite was 7.16 mmol/g at a temperature of 20 oC and at pressure of 1 atm. The adoption selectivity of CO2 over N2 strongly depend on the temperature and the highest selectivity by Cu-nano zeolite was 50.71 at 20 oC. From analysis of regeneration characteristics of CO2 loaded adsorbent, the percentage removal of CO2 was maintained at more than 78.2 % even after 10 cycles of adsorption-desorption. Based on these result, the Cu-nano zeolite can be used as an effective and economical adsorbent for CO2 capture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO2%20capture" title="CO2 capture">CO2 capture</a>, <a href="https://publications.waset.org/abstracts/search?q=selectivity" title=" selectivity"> selectivity</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu-nano%20zeolite" title=" Cu-nano zeolite"> Cu-nano zeolite</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration." title=" regeneration. "> regeneration. </a> </p> <a href="https://publications.waset.org/abstracts/44457/enhancement-of-co2-capture-by-using-cu-nano-zeolite-synthesized" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44457.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">320</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">31</span> A Reflection of the Contemporary Life of Urban People Through Mixed Media Art</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Van%20Huong%20Mai">Van Huong Mai</a>, <a href="https://publications.waset.org/abstracts/search?q=Kanokwan%20Nithiratphat"> Kanokwan Nithiratphat</a>, <a href="https://publications.waset.org/abstracts/search?q=Adool%20Booncham"> Adool Booncham</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Movement of Contemporary Life consisted of two purposes, which were to study the movement and development of the modern life and to create the visual arts, which were paintings expressed via the form of apartment buildings was used from mixed media (digital printing and acrylic painting on canvas) which conveyed the rapid pace of modern life leading to diverse movements in viewer’s feeling. The operation of this creation was collected field data, documentary data, and influence from creative work. The data analysis was analyzed in order to theme, form, technique, and process to satisfy of concept and special character of the pieces. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=movement" title="movement">movement</a>, <a href="https://publications.waset.org/abstracts/search?q=contemporary%20life" title=" contemporary life"> contemporary life</a>, <a href="https://publications.waset.org/abstracts/search?q=visual%20art" title=" visual art"> visual art</a>, <a href="https://publications.waset.org/abstracts/search?q=acrylic%20painting" title=" acrylic painting"> acrylic painting</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20art" title=" digital art"> digital art</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20space" title=" urban space"> urban space</a> </p> <a href="https://publications.waset.org/abstracts/151895/a-reflection-of-the-contemporary-life-of-urban-people-through-mixed-media-art" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151895.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">98</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">30</span> Concentration of D-Pinitol from Carob Kibble Using Submerged Fermentation by Saccharomyces cerevisiae </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thi%20Huong%20Vu">Thi Huong Vu</a>, <a href="https://publications.waset.org/abstracts/search?q=Vijay%20Jayasena"> Vijay Jayasena</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhongxiang%20Fang"> Zhongxiang Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Gary%20Dykes"> Gary Dykes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> D-pinitol (3-O-methyl ether of D-chiro-inosito) has been known to have health benefits for diabetic patients. Carob kibble has received attention due to the presence of high value D-pinitol and polyphenol antioxidants. D-pinitol was concentrated from carob kibble using submerged fermentation with Saccharomyces cerevisiae. Total carbohydrates and D-pinitol were determined by the phenol-sulphuric acid method and HPLC, respectively. The content of D-pinitol increased from approximately 43 to 70 mg/g dry weight after fermentation. The yeast consumed over 70% of total carbohydrates in carob kibble without any negative effect on D-pinitol content. A range of substrate medium pH’s from 5.0 – 7.0 had no significant effect on the removal of carbohydrates and D-pinitol. This method may provide a practical solution for production of D-pinitol from carob in a cost effective manner. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carob%20kibble" title="carob kibble">carob kibble</a>, <a href="https://publications.waset.org/abstracts/search?q=d-pinitol" title=" d-pinitol"> d-pinitol</a>, <a href="https://publications.waset.org/abstracts/search?q=saccharomyces%20cerevisiae" title=" saccharomyces cerevisiae"> saccharomyces cerevisiae</a>, <a href="https://publications.waset.org/abstracts/search?q=submerged%20fermentation" title=" submerged fermentation"> submerged fermentation</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20carbohydrates" title=" total carbohydrates"> total carbohydrates</a> </p> <a href="https://publications.waset.org/abstracts/54361/concentration-of-d-pinitol-from-carob-kibble-using-submerged-fermentation-by-saccharomyces-cerevisiae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54361.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">321</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">29</span> Improvement in Ni (II) Adsorption Capacity by Using Fe-Nano Zeolite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pham-Thi%20Huong">Pham-Thi Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Byeong-Kyu%20Lee"> Byeong-Kyu Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Jitae%20Kim"> Jitae Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi-Hyeon%20Lee"> Chi-Hyeon Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fe-nano zeolite adsorbent was used for removal of Ni (II) ions from aqueous solution. The adsorbent was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and the surface area Brunauer–Emmett–Teller (BET) using for analysis of functional groups, morphology and surface area. Bath adsorption experiments were analyzed on the effect of pH, time, adsorbent doses and initial Ni (II) concentration. The optimum pH for Ni (II) removal using Fe-nano zeolite was found at 5.0 and 90 min of reaction time. The maximum adsorption capacity of Ni (II) was 231.68 mg/g based on the Langmuir isotherm. The kinetics data for the adsorption process was fitted with the pseudo-second-order model. The desorption of Ni (II) from Ni-loaded Fe-nano zeolite was analyzed and even after 10 cycles 72 % desorption was achieved. These finding supported that Fe-nano zeolite with high adsorption capacity, high reuse ability would be utilized for Ni (II) removal from water. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fe-nano%20zeolite" title="Fe-nano zeolite">Fe-nano zeolite</a>, <a href="https://publications.waset.org/abstracts/search?q=adsorption" title=" adsorption"> adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni%20%28II%29%20removal" title=" Ni (II) removal"> Ni (II) removal</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration" title=" regeneration"> regeneration</a> </p> <a href="https://publications.waset.org/abstracts/44506/improvement-in-ni-ii-adsorption-capacity-by-using-fe-nano-zeolite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44506.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">232</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">28</span> Challenges in Learning Legal English from the Students’ Perspective at Hanoi Law University</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nhac%20Thanh%20Huong">Nhac Thanh Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Legal English, also known as Language of the Law (Mellinkoff, David. 2004), is an indispensable factor contributing to the development of legal field. At Hanoi Law University, legal English is a compulsory subject in the syllabus of legal English major; International Trade law and Fast-track law training program. The question that what obstacles students face with when dealing with legal English, however, has not been answered at that institution. Therefore, this present research, which makes use of survey questionnaires as the main method, aims to study the challenges of learning legal English from the students’ perspective, from which some useful solutions are drawn up to overcome these difficulties and improve the effectiveness of learning legal English. The results indicate notable difficulties arising from the level of general English skills, the characteristics of legal English and legal background knowledge. These findings lay a scientific foundation for suggesting some solutions for practical applications in teaching as well as learning legal English among both teachers and students. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=challenges" title="challenges">challenges</a>, <a href="https://publications.waset.org/abstracts/search?q=HLU" title=" HLU"> HLU</a>, <a href="https://publications.waset.org/abstracts/search?q=Legal%20English" title=" Legal English"> Legal English</a>, <a href="https://publications.waset.org/abstracts/search?q=students%27%20perspective" title=" students' perspective"> students' perspective</a> </p> <a href="https://publications.waset.org/abstracts/95596/challenges-in-learning-legal-english-from-the-students-perspective-at-hanoi-law-university" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95596.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">27</span> Heavy Metal of Soil in Wastewater, Irrigated Agricultural Soil in a Surrounding Area of the Nhue River, Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thi%20Lan%20Huong%20Nguyen">Thi Lan Huong Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Motohei%20Kanayama"> Motohei Kanayama</a>, <a href="https://publications.waset.org/abstracts/search?q=Takahiro%20Higashi"> Takahiro Higashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Van%20Chinh%20Le"> Van Chinh Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Thu%20Ha%20Doan"> Thu Ha Doan</a>, <a href="https://publications.waset.org/abstracts/search?q=Anh%20Daochu"> Anh Daochu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Waste from industrial sources, serves as sources of water for irrigating farms. The purpose of this study is to identify the impact of waste-water irrigation on the level of heavy metals in the soils. Soil samples were collected from the different locations from upstream to downstream of the Nhue River to evaluate heavy metal pollution. The results showed that the concentrations of all heavy metals in the soil samples in the farmland area were much higher than the background level in that area (1.2-2.6 mg/kg for Cd, 42-60 mg/kg for Cr, 22-62mg/kg for Cu, 30-86 mg/kg for Pb, 119-245 mg/kg for Zn, and 26-57 mg/kg for Ni), and exceeded the level of Vietnamese standard for agricultural soil for all heavy metals Cd, Cu, Pb, and Zn except soil samples at upstream and downstream of the Nhue River. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heavy%20metal" title="heavy metal">heavy metal</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=Nhue%20River" title=" Nhue River"> Nhue River</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater%20irrigation" title=" wastewater irrigation"> wastewater irrigation</a> </p> <a href="https://publications.waset.org/abstracts/3345/heavy-metal-of-soil-in-wastewater-irrigated-agricultural-soil-in-a-surrounding-area-of-the-nhue-river-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3345.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">468</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">26</span> Efficient Heuristic Algorithm to Speed Up Graphcut in Gpu for Image Stitching</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tai%20Nguyen">Tai Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Minh%20Bui"> Minh Bui</a>, <a href="https://publications.waset.org/abstracts/search?q=Huong%20Ninh"> Huong Ninh</a>, <a href="https://publications.waset.org/abstracts/search?q=Tu%20Nguyen"> Tu Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai%20Tran"> Hai Tran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> GraphCut algorithm has been widely utilized to solve various types of computer vision problems. Its expensive computational cost encouraged many researchers to improve the speed of the algorithm. Recent works proposed schemes that work on parallel computing platforms such as CUDA. However, the problem of low convergence speed prevents the usage of GraphCut for real time applications. In this paper, we propose global suppression heuristic to boost the conver-gence process of the algorithm. A parallel implementation of GraphCut algorithm on CUDA designed for the image stitching problem is introduced. Our method achieves up to 3× time boost on the graph of size 80 × 480 compared to the best sequential GraphCut algorithm while achieving satisfactory stitched images, suitable for panorama applications. Our source code will be soon available for further research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CUDA" title="CUDA">CUDA</a>, <a href="https://publications.waset.org/abstracts/search?q=graph%20cut" title=" graph cut"> graph cut</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20stitching" title=" image stitching"> image stitching</a>, <a href="https://publications.waset.org/abstracts/search?q=texture%20synthesis" title=" texture synthesis"> texture synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=maxflow%2Fmincut%20algorithm" title=" maxflow/mincut algorithm"> maxflow/mincut algorithm</a> </p> <a href="https://publications.waset.org/abstracts/154120/efficient-heuristic-algorithm-to-speed-up-graphcut-in-gpu-for-image-stitching" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154120.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">131</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">25</span> Robust Model Predictive Controller for Uncertain Nonlinear Wheeled Inverted Pendulum Systems: A Tube-Based Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tran%20Gia%20Khanh">Tran Gia Khanh</a>, <a href="https://publications.waset.org/abstracts/search?q=Dao%20Phuong%20Nam"> Dao Phuong Nam</a>, <a href="https://publications.waset.org/abstracts/search?q=Do%20Trong%20Tan"> Do Trong Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Van%20Huong"> Nguyen Van Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20Xuan%20Sinh"> Mai Xuan Sinh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents the problem of tube-based robust model predictive controller for a class of continuous-time systems in the presence of input disturbances. The main objective is to point out the state trajectory of closed system being maintained inside a sequence of tubes. An estimation of attraction region of the closed system is pointed out based on input state stability (ISS) theory and linearized model in each time interval. The theoretical analysis and simulation results demonstrate the performance of the proposed algorithm for a wheeled inverted pendulum system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=input%20state%20stability%20%28ISS%29" title="input state stability (ISS)">input state stability (ISS)</a>, <a href="https://publications.waset.org/abstracts/search?q=tube-based%20robust%20MPC" title=" tube-based robust MPC"> tube-based robust MPC</a>, <a href="https://publications.waset.org/abstracts/search?q=continuous-time%20nonlinear%20systems" title=" continuous-time nonlinear systems"> continuous-time nonlinear systems</a>, <a href="https://publications.waset.org/abstracts/search?q=wheeled%20inverted%20pendulum" title=" wheeled inverted pendulum"> wheeled inverted pendulum</a> </p> <a href="https://publications.waset.org/abstracts/80455/robust-model-predictive-controller-for-uncertain-nonlinear-wheeled-inverted-pendulum-systems-a-tube-based-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80455.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">220</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">24</span> Assessment of the Water Quality of the Nhue River in Vietnam and its Suitability for Irrigation Water</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thi%20Lan%20Huong%20Nguyen">Thi Lan Huong Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Motohei%20Kanayama"> Motohei Kanayama</a>, <a href="https://publications.waset.org/abstracts/search?q=Takahiro%20Higashi"> Takahiro Higashi</a>, <a href="https://publications.waset.org/abstracts/search?q=Van%20Chinh%20Le"> Van Chinh Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Thu%20Ha%20Doan"> Thu Ha Doan</a>, <a href="https://publications.waset.org/abstracts/search?q=Anh%20Dao%20Chu"> Anh Dao Chu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Nhue River in Vietnam is the main source of irrigation water for suburban agricultural land and fish farm. Wastewater from the industrial plants located along these rivers has been discharged, which has degraded the water quality of the rivers. The present paper describes the chemical properties of water from the river focusing on heavy metal pollution and the suitability of water quality for irrigation. Water from the river was heavily polluted with heavy metals such as Pb, Cu, Zn, Cr, Cd, and Ni. Dissolved oxygen, COD, and total suspended solids, and the concentrations of all heavy metals exceeded the Vietnamese standard for surface water quality in all investigated sites. The concentrations of some heavy metals such as Cu, Cd, Cr and Ni were over the internationally recommended WHO maximum limits for irrigation water. A wide variation in heavy metal concentration of water due to metal types is the result of wastewater discharged from different industrial sources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heavy%20metals" title="heavy metals">heavy metals</a>, <a href="https://publications.waset.org/abstracts/search?q=stream%20water" title=" stream water"> stream water</a>, <a href="https://publications.waset.org/abstracts/search?q=irrigation" title=" irrigation"> irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=industry" title=" industry"> industry</a> </p> <a href="https://publications.waset.org/abstracts/3344/assessment-of-the-water-quality-of-the-nhue-river-in-vietnam-and-its-suitability-for-irrigation-water" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3344.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">402</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">23</span> The Photon-Drag Effect in Cylindrical Quantum Wire with a Parabolic Potential </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hoang%20Van%20Ngoc">Hoang Van Ngoc</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thu%20Huong"> Nguyen Thu Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Quang%20Bau"> Nguyen Quang Bau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Using the quantum kinetic equation for electrons interacting with acoustic phonon, the density of the constant current associated with the drag of charge carriers in cylindrical quantum wire by a linearly polarized electromagnetic wave, a DC electric field and a laser radiation field is calculated. The density of the constant current is studied as a function of the frequency of electromagnetic wave, as well as the frequency of laser field and the basic elements of quantum wire with a parabolic potential. The analytic expression of the constant current density is numerically evaluated and plotted for a specific quantum wires GaAs/AlGaAs to show the dependence of the constant current density on above parameters. All these results of quantum wire compared with bulk semiconductors and superlattices to show the difference. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=The%20photon-drag%20effect" title="The photon-drag effect">The photon-drag effect</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20constant%20current%20density" title=" the constant current density"> the constant current density</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20wire" title=" quantum wire"> quantum wire</a>, <a href="https://publications.waset.org/abstracts/search?q=parabolic%20potential" title=" parabolic potential"> parabolic potential</a> </p> <a href="https://publications.waset.org/abstracts/53802/the-photon-drag-effect-in-cylindrical-quantum-wire-with-a-parabolic-potential" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53802.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">422</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">22</span> Adaptive Optimal Controller for Uncertain Inverted Pendulum System: A Dynamic Programming Approach for Continuous Time System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dao%20Phuong%20Nam">Dao Phuong Nam</a>, <a href="https://publications.waset.org/abstracts/search?q=Tran%20Van%20Tuyen"> Tran Van Tuyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Do%20Trong%20Tan"> Do Trong Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Bui%20Minh%20Dinh"> Bui Minh Dinh</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Van%20Huong"> Nguyen Van Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we investigate the adaptive optimal control law for continuous-time systems with input disturbances and unknown parameters. This paper extends previous works to obtain the robust control law of uncertain systems. Through theoretical analysis, an adaptive dynamic programming (ADP) based optimal control is proposed to stabilize the closed-loop system and ensure the convergence properties of proposed iterative algorithm. Moreover, the global asymptotic stability (GAS) for closed system is also analyzed. The theoretical analysis for continuous-time systems and simulation results demonstrate the performance of the proposed algorithm for an inverted pendulum system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=approximate%2Fadaptive%20dynamic%20programming" title="approximate/adaptive dynamic programming">approximate/adaptive dynamic programming</a>, <a href="https://publications.waset.org/abstracts/search?q=ADP" title=" ADP"> ADP</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20optimal%20control%20law" title=" adaptive optimal control law"> adaptive optimal control law</a>, <a href="https://publications.waset.org/abstracts/search?q=input%20state%20stability" title=" input state stability"> input state stability</a>, <a href="https://publications.waset.org/abstracts/search?q=ISS" title=" ISS"> ISS</a>, <a href="https://publications.waset.org/abstracts/search?q=inverted%20pendulum" title=" inverted pendulum"> inverted pendulum</a> </p> <a href="https://publications.waset.org/abstracts/80356/adaptive-optimal-controller-for-uncertain-inverted-pendulum-system-a-dynamic-programming-approach-for-continuous-time-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80356.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">194</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Intrinsic and Extrinsic Motivations in Organic Farming Practices and Farmers’ Subjective Well-Being: The Case of French Organic Farmers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thi%20Huong%20Nhai">Nguyen Thi Huong Nhai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper examines how different motivations to engage in organic farming may impact the farmers’ subjective well-being using a survey database from the French Agence Bio. Three measures representing the subjective well-being of farmers brought by their involvement in organic farming are used in this study: feelings of pride, satisfaction, and feeling of happiness. We focus on the effects of two different types of motivations: intrinsic motivations, such as preservation of human health and public health, concern about the environment, and autonomy in farming decisions; extrinsic motivations, such as fair price, income, and demand incentives. Results show that not all intrinsic motivations can increase farmers’s well-being. The intrinsic motivation relating to environment concern and aspiration seems to have the highest positive impact on the three proxies of SWB in our study. It is interesting to find out that the two extrinsic motivations (profitable price, satisfying the incentive of consumer and cooperative) are proven to have a negative influence. Some comparisons, explanations, and practical implications are also indicated in this research. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intrinsic%20otivation" title="intrinsic otivation">intrinsic otivation</a>, <a href="https://publications.waset.org/abstracts/search?q=extrinsic%20motivation" title=" extrinsic motivation"> extrinsic motivation</a>, <a href="https://publications.waset.org/abstracts/search?q=subjective%20wellbeing" title=" subjective wellbeing"> subjective wellbeing</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20farmers" title=" organic farmers"> organic farmers</a> </p> <a href="https://publications.waset.org/abstracts/186878/intrinsic-and-extrinsic-motivations-in-organic-farming-practices-and-farmers-subjective-well-being-the-case-of-french-organic-farmers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186878.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">41</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">20</span> Factors Influencing the Voluntary Disclosure of Vietnamese Listed Companies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pham%20Duc%20Hieu">Pham Duc Hieu</a>, <a href="https://publications.waset.org/abstracts/search?q=Do%20Thi%20Huong%20Lan"> Do Thi Huong Lan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this paper is to investigate the factors affecting the extent of voluntary disclosure by examining the annual reports of 205 industrial and manufacturing companies listing on Ho Chi Minh Stock Exchange (HSX) and Hanoi Stock Exchange (HNX) for the year end of 2012. Those factors include company size, profitability, leverage, state ownership, managerial ownership, and foreign ownership, board independence, role duality and type of external auditors. Evidence from this study suggests two main findings. (1) Companies with high foreign ownership have a high level of voluntary disclosure. (2) The company size is an important factor related to the increased level of voluntary disclosure in annual reports made by Vietnamese listed companies. The larger the company, the higher the information is disclosed. However, no significant associations are found between profitability, leverage, state ownership, managerial ownership, board independence, role duality and type of external auditors as hypothesized in this study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=voluntary%20disclosure" title="voluntary disclosure">voluntary disclosure</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnamese%20listed%20companies" title=" Vietnamese listed companies"> Vietnamese listed companies</a>, <a href="https://publications.waset.org/abstracts/search?q=voluntary" title=" voluntary"> voluntary</a>, <a href="https://publications.waset.org/abstracts/search?q=duality" title=" duality"> duality</a> </p> <a href="https://publications.waset.org/abstracts/25265/factors-influencing-the-voluntary-disclosure-of-vietnamese-listed-companies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25265.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">410</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">19</span> Sexual Behaviors and Condom Attitude among Injecting Drug Users in Hai Phong, Vietnam: Qualitative Findings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tanvir%20Ahmed">Tanvir Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Thanh%20N.%20Long"> Thanh N. Long</a>, <a href="https://publications.waset.org/abstracts/search?q=Phan%20T.%20Huong"> Phan T. Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Donald%20E.%20Stewart"> Donald E. Stewart</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents views on condom use and the contexts of safe and unsafe sexual practices with different sexual partners and their relationships among Injecting Drug Users (IDUs) in Hai Phong, Vietnam. Fifteen IDUs participated and two local interviewers conducted qualitative semi-structured face-to-face interviews in September-October, 2012 in Vietnamese language. Data were analyzed thematically. Non-protective condom attitudes include negotiate or convince Female Sex Workers (FSW); not realizing risk, importance or necessity; partner doesn’t like, and having extra money/drug from clients. On the other hand, self-awareness, family-consciousness, suspicion of STI presence, fear of getting HIV, and client negotiation sometimes resulted in a safe-sex practice. A thematic diagram was developed to present the relationship (strong/weak) between condom attitude and sexual practice (safe/unsafe) by partner types. The experiences and views reflected in the qualitative information emphasize the heightened need for safe-sex education especially among young IDUs (male/female) highlighting sexual transmission risk. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AIDS" title="AIDS">AIDS</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV" title=" HIV"> HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=injecting%20drug%20user" title=" injecting drug user"> injecting drug user</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20behaviors" title=" risk behaviors"> risk behaviors</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam" title=" Vietnam "> Vietnam </a> </p> <a href="https://publications.waset.org/abstracts/4419/sexual-behaviors-and-condom-attitude-among-injecting-drug-users-in-hai-phong-vietnam-qualitative-findings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4419.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">857</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">18</span> Impact of Burning Incense/Joss Paper on Outdoor Air Pollution: An Interrupted Time Series Analysis Using Hanoi Air Quality Data in 2020</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chi%20T.%20L.%20Pham">Chi T. L. Pham</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Vu"> L. Vu</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoang%20T.%20Le"> Hoang T. Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Huong%20T.%20T.%20Le"> Huong T. T. Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Quyen%20T.%20T.%20Bui"> Quyen T. T. Bui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Burning joss paper and incense during religious and cultural ceremonies is common in Vietnam. This study aims to measure the impact of burning joss paper and incense during Vu Lai festival (full moon of July) in Vietnam. Data of Hanoi air quality in year 2020 was used. Interrupted time series analysis was employed to examine the changes in pattern of various air quality indicators before and after the festival period. The results revealed that burning joss paper and incense led to an immediate increase of 15.94 units in the air quality index on the first day, which gradually rose to 47.4 units by the end of the full moon period. Regarding NO2, PM10, and PM25, there was no significant immediate change at the start of the intervention period (August 29th, 2020). However, significant increases in levels and an upward trend were observed during the intervention time, followed by substantial decreases after the intervention period ended (September 3rd, 2020). This analysis did not find a significant impact on CO, SO2, and O3 due to burning joss paper and incense. These findings provide valuable insights for policymakers and stakeholders involved in managing and enhancing air quality in regions where such practices are prevalent. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20pollution" title="air pollution">air pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=incense" title=" incense"> incense</a>, <a href="https://publications.waset.org/abstracts/search?q=ITSA" title=" ITSA"> ITSA</a>, <a href="https://publications.waset.org/abstracts/search?q=joss%20paper" title=" joss paper"> joss paper</a>, <a href="https://publications.waset.org/abstracts/search?q=religious%20activities" title=" religious activities"> religious activities</a> </p> <a href="https://publications.waset.org/abstracts/185265/impact-of-burning-incensejoss-paper-on-outdoor-air-pollution-an-interrupted-time-series-analysis-using-hanoi-air-quality-data-in-2020" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185265.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">49</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">17</span> The Hall Coefficient and Magnetoresistance in Rectangular Quantum Wires with Infinitely High Potential under the Influence of a Laser Radiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thu%20Huong">Nguyen Thu Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Quang%20Bau"> Nguyen Quang Bau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Hall Coefficient (HC) and the Magnetoresistance (MR) have been studied in two-dimensional systems. The HC and the MR in Rectangular Quantum Wire (RQW) subjected to a crossed DC electric field and magnetic field in the presence of a Strong Electromagnetic Wave (EMW) characterized by electric field are studied in this work. Using the quantum kinetic equation for electrons interacting with optical phonons, we obtain the analytic expressions for the HC and the MR with a dependence on magnetic field, EMW frequency, temperatures of systems and the length characteristic parameters of RQW. These expressions are different from those obtained for bulk semiconductors and cylindrical quantum wires. The analytical results are applied to GaAs/GaAs/Al. For this material, MR depends on the ratio of the EMW frequency to the cyclotron frequency. Indeed, MR reaches a minimum at the ratio 5/4, and when this ratio increases, it tends towards a saturation value. The HC can take negative or positive values. Each curve has one maximum and one minimum. When magnetic field increases, the HC is negative, achieves a minimum value and then increases suddenly to a maximum with a positive value. This phenomenon differs from the one observed in cylindrical quantum wire, which does not have maximum and minimum values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hall%20coefficient" title="hall coefficient">hall coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=rectangular%20quantum%20wires" title=" rectangular quantum wires"> rectangular quantum wires</a>, <a href="https://publications.waset.org/abstracts/search?q=electron-optical%20phonon%20interaction" title=" electron-optical phonon interaction"> electron-optical phonon interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20kinetic%20equation" title=" quantum kinetic equation"> quantum kinetic equation</a> </p> <a href="https://publications.waset.org/abstracts/41442/the-hall-coefficient-and-magnetoresistance-in-rectangular-quantum-wires-with-infinitely-high-potential-under-the-influence-of-a-laser-radiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41442.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">488</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">16</span> Application of ATP7B Gene Mutation Analysis in Prenatal Diagnosis of Wilson’s Disease</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huong%20M.%20T.%20Nguyen">Huong M. T. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoa%20A.%20P.%20Nguyen"> Hoa A. P. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi%20V.%20Phan"> Chi V. Phan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20P.%20T.%20Nguyen"> Mai P. T. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ngoc%20D.%20Ngo"> Ngoc D. Ngo</a>, <a href="https://publications.waset.org/abstracts/search?q=Van%20T.%20Ta"> Van T. Ta</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai%20T.%20Le"> Hai T. Le</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wilson’s disease is an autosomal recessive disorder of copper metabolism, which is caused by mutation in copper- transporting P-type ATPase (ATP7B). The mechanism of this disease is a failure of hepatic excretion of copper to the bile, and it leads to copper deposits in the liver and other organs. Most clinical symptoms of Wilson’s disease can present as liver disease and/or neurologic disease. Objective: The goal of the study is prenatal diagnosis for pregnant women at high risk of Wilson’s disease in Northern Vietnam. Material and method: Three probands with clinically diagnosed liver disease were detected in the mutations of 21 exons and exon-intron boundaries of the ATP7B gene by direct Sanger-sequencing. Prenatal diagnoses were performed by amniotic fluid sampling from pregnant women in the 16th-18th weeks of pregnancy after the genotypes of parents with the probands were identified. Result: A total of three different mutations of the probands, including of S105*, P1052L, P1273G, were detected. Among three fetuses which underwent prenatal genetic testing, one fetus was homozygote; two fetuses were carriers. Conclusion: Genetic testing provided a useful method for prenatal diagnosis, and is a basis for genetic counseling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ATP7B%20gene" title="ATP7B gene">ATP7B gene</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20testing" title=" genetic testing"> genetic testing</a>, <a href="https://publications.waset.org/abstracts/search?q=prenatal%20diagnosis" title=" prenatal diagnosis"> prenatal diagnosis</a>, <a href="https://publications.waset.org/abstracts/search?q=pedigree" title=" pedigree"> pedigree</a>, <a href="https://publications.waset.org/abstracts/search?q=Wilson%20disease" title=" Wilson disease"> Wilson disease</a> </p> <a href="https://publications.waset.org/abstracts/58248/application-of-atp7b-gene-mutation-analysis-in-prenatal-diagnosis-of-wilsons-disease" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58248.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">455</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">15</span> Hall Coefficient in the Presence of Strong Electromagnetic Waves Caused by Confined Electrons and Phonons in a Rectangular Quantum Wire</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Quang%20Bau">Nguyen Quang Bau</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thu%20Huong"> Nguyen Thu Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Dang%20Thi%20Thanh%20Thuy"> Dang Thi Thanh Thuy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The analytic expression for the Hall Coefficient (HC) caused by the confined electrons in the presence of a strong electromagnetic wave (EMW) including the effect of phonon confinement in rectangular quantum wires (RQWs) is calculated by using the quantum kinetic equation for electrons in the case of electron - optical phonon scattering. It is because the expression of the HC for the confined phonon case contains indexes m, m’ which are specific to the phonon confinement. The expression in a RQW is different from that for the case of unconfined phonons in a RQW or in 2D. The results are numerically calculated and discussed for a GaAs/GaAsAl RQW. The numerical results show that HC in a RQW can have both negative and positive values. This is different from the case of the absence of EMW and the case presence of EMW including the effect of phonon unconfinement in a RQW. These results are also compared with those in the case of unconfined phonons in a RQW and confined phonons in a quantum well. The conductivity in the case of confined phonon has more resonance peaks compared with that in case of unconfined phonons in a RQW. This new property is the same in quantum well. All results are compared with the case of unconfined phonons to see differences. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hall%20coefficient" title="Hall coefficient">Hall coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=rectangular%20quantum%20wires" title=" rectangular quantum wires"> rectangular quantum wires</a>, <a href="https://publications.waset.org/abstracts/search?q=electron-optical%20phonon%20interaction" title=" electron-optical phonon interaction"> electron-optical phonon interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20kinetic%20equation" title=" quantum kinetic equation"> quantum kinetic equation</a>, <a href="https://publications.waset.org/abstracts/search?q=confined%20phonons" title=" confined phonons"> confined phonons</a> </p> <a href="https://publications.waset.org/abstracts/53789/hall-coefficient-in-the-presence-of-strong-electromagnetic-waves-caused-by-confined-electrons-and-phonons-in-a-rectangular-quantum-wire" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53789.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">280</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Genetic Characteristics of Chicken Anemia Virus Circulating in Northern Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hieu%20Van%20Dong">Hieu Van Dong</a>, <a href="https://publications.waset.org/abstracts/search?q=Giang%20Thi%20Huong%20Tran"> Giang Thi Huong Tran</a>, <a href="https://publications.waset.org/abstracts/search?q=Giap%20Van%20Nguyen"> Giap Van Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tung%20Duy%20Dao"> Tung Duy Dao</a>, <a href="https://publications.waset.org/abstracts/search?q=Vuong%20Nghia%20Bui"> Vuong Nghia Bui</a>, <a href="https://publications.waset.org/abstracts/search?q=Le%20Thi%20My%20Huynh"> Le Thi My Huynh</a>, <a href="https://publications.waset.org/abstracts/search?q=Yohei%20Takeda"> Yohei Takeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Haruko%20Ogawa"> Haruko Ogawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Kunitoshi%20Imai"> Kunitoshi Imai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chicken anemia virus (CAV) has a ubiquitous and worldwide distribution in chicken production. Our group previously reported high seroprevalence of CAV in chickens in northern Vietnam. In the present study, 330 tissue samples collected from commercial and breeder chicken farms in eleven provinces in northern Vietnam were tested for the CAV infection. We found that 157 out of 330 (47.58%) chickens were positive with CAV genes by real-time PCR method. Nine CAV strains obtained from the different location and time were forwarded to the full-length sequence of CAV VP1 gene. Phylogenetic analysis of the Vietnamese CAV vp1 gene indicated that the CAVs circulating in northern Vietnam were divided into three distinct genotypes, II, III, and V, but not clustered with the vaccine strains. Among the three genotypes, genotype III was the major one widely spread in Vietnam, and that included three sub-genotypes, IIIa, IIIb, and IIIc. The Vietnamese CAV strains were closely related to the Chinese, Taiwanese, and USA strains. All the CAV isolates had glutamine at amino acid position 394 in the VP1 gene, suggesting that they might be highly pathogenic strains. One strain was defined to be genotype V, which had not been reported for Vietnamese CAVs. Additional studies are required to further evaluate the pathogenicity of CAV strains circulating in Vietnam. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chicken%20anemia%20virus" title="chicken anemia virus">chicken anemia virus</a>, <a href="https://publications.waset.org/abstracts/search?q=genotype" title=" genotype"> genotype</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20characteristics" title=" genetic characteristics"> genetic characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam" title=" Vietnam"> Vietnam</a> </p> <a href="https://publications.waset.org/abstracts/105191/genetic-characteristics-of-chicken-anemia-virus-circulating-in-northern-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105191.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">167</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">13</span> Phylogenetic Analyses of Newcastle Disease Virus Isolated from Unvaccinated Chicken Flocks in Kyrgyzstan from 2015 to 2016</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Giang%20Tran%20Thi%20Huong">Giang Tran Thi Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Hieu%20Dong%20Van"> Hieu Dong Van</a>, <a href="https://publications.waset.org/abstracts/search?q=Tung%20Dao%20Duy"> Tung Dao Duy</a>, <a href="https://publications.waset.org/abstracts/search?q=Saadanov%20Iskender"> Saadanov Iskender</a>, <a href="https://publications.waset.org/abstracts/search?q=Isakeev%20Mairambek"> Isakeev Mairambek</a>, <a href="https://publications.waset.org/abstracts/search?q=Tsutomu%20Omatsu"> Tsutomu Omatsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yukie%20Katayama"> Yukie Katayama</a>, <a href="https://publications.waset.org/abstracts/search?q=Tetsuya%20Mizutani"> Tetsuya Mizutani</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuki%20Ozeki"> Yuki Ozeki</a>, <a href="https://publications.waset.org/abstracts/search?q=Yohei%20Takeda"> Yohei Takeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Haruko%20Ogawa"> Haruko Ogawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Kunitoshi%20Imai"> Kunitoshi Imai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Newcastle disease virus (NDV) is a contagious viral disease of the poultry industry and other birds throughout the world. At present, very little is known about molecular epidemiological data regarding the causes of ND outbreak in commercial poultry farms in Kyrgyzstan. In the current study, the NDV isolated from the one out of three samples from the unvaccinated flock was confirmed as NDV. Phylogenetic analysis indicated that this NDV strain is clustered in the Class II subgenotype VIId, and closely related to the Chinese NDV isolate. Phylogenetic analyses revealed that the isolated NDV strain has an origin different from the 4 NDV strains previously identified in Kyrgyzstan. According to the mean death time (MDT: 61.1 h) and a multibasic amino acid (aa) sequence at the F0 proteolytic cleavage site (¹¹²R-R-Q-K-R-F¹¹⁷), the NDV isolate was determined as mesogenic strain. Several mutations in the neutralizing epitopes (notably, ³⁴⁷E→K) and the global head were observed in the hemagglutinin-neuraminidase (HN) protein of the current isolate. The present study represents the molecular characterization of the coding gene region of NDV in Kyrgyzstan. Additionally, further study will be investigated on the antigenic characterization using monoclonal antibody. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kyrgyzstan" title="Kyrgyzstan">Kyrgyzstan</a>, <a href="https://publications.waset.org/abstracts/search?q=Newcastle%20disease" title=" Newcastle disease"> Newcastle disease</a>, <a href="https://publications.waset.org/abstracts/search?q=genotype" title=" genotype"> genotype</a>, <a href="https://publications.waset.org/abstracts/search?q=genome%20characterization" title=" genome characterization"> genome characterization</a> </p> <a href="https://publications.waset.org/abstracts/105195/phylogenetic-analyses-of-newcastle-disease-virus-isolated-from-unvaccinated-chicken-flocks-in-kyrgyzstan-from-2015-to-2016" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/105195.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Measuring Greenhouse Gas Exchange from Paddy Field Using Eddy Covariance Method in Mekong Delta, Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vu%20H.%20N.%20Khue">Vu H. N. Khue</a>, <a href="https://publications.waset.org/abstracts/search?q=Marian%20Pavelka"> Marian Pavelka</a>, <a href="https://publications.waset.org/abstracts/search?q=Georg%20Jocher"> Georg Jocher</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji%C5%99%C3%AD%20Du%C5%A1ek"> Jiří Dušek</a>, <a href="https://publications.waset.org/abstracts/search?q=Le%20T.%20Son"> Le T. Son</a>, <a href="https://publications.waset.org/abstracts/search?q=Bui%20T.%20An"> Bui T. An</a>, <a href="https://publications.waset.org/abstracts/search?q=Ho%20Q.%20Bang"> Ho Q. Bang</a>, <a href="https://publications.waset.org/abstracts/search?q=Pham%20Q.%20Huong"> Pham Q. Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Agriculture is an important economic sector of Vietnam, the most popular of which is wet rice cultivation. These activities are also known as the main contributor to the national greenhouse gas. In order to understand more about greenhouse gas exchange in these activities and to investigate the factors influencing carbon cycling and sequestration in these types of ecosystems, since 2019, the first eddy covariance station has been installed in a paddy field in Long An province, Mekong Delta. The station was equipped with state-of-the-art equipment for CO₂ and CH₄ gas exchange and micrometeorology measurements. In this study, data from the station was processed following the ICOS recommendations (Integrated Carbon Observation System) standards for CO₂, while CH₄ was manually processed and gap-filled using a random forest model from methane-gapfill-ml, a machine learning package, as there is no standard method for CH₄ flux gap-filling yet. Finally, the carbon equivalent (Ce) balance based on CO₂ and CH₄ fluxes was estimated. The results show that in 2020, even though a new water management practice - alternate wetting and drying - was applied to reduce methane emissions, the paddy field released 928 g Cₑ.m⁻².yr⁻¹, and in 2021, it was reduced to 707 g Cₑ.m⁻².yr⁻¹. On a provincial level, rice cultivation activities in Long An, with a total area of 498,293 ha, released 4.6 million tons of Cₑ in 2020 and 3.5 million tons of Cₑ in 2021. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eddy%20covariance" title="eddy covariance">eddy covariance</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20gas" title=" greenhouse gas"> greenhouse gas</a>, <a href="https://publications.waset.org/abstracts/search?q=methane" title=" methane"> methane</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20cultivation" title=" rice cultivation"> rice cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=Mekong%20Delta" title=" Mekong Delta"> Mekong Delta</a> </p> <a href="https://publications.waset.org/abstracts/175768/measuring-greenhouse-gas-exchange-from-paddy-field-using-eddy-covariance-method-in-mekong-delta-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175768.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Corrective Feedback and Uptake Patterns in English Speaking Lessons at Hanoi Law University</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nhac%20Thanh%20Huong">Nhac Thanh Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> New teaching methods have led to the changes in the teachers’ roles in an English class, in which teachers’ error correction is an integral part. Language error and corrective feedback have been the interest of many researchers in foreign language teaching. However, the techniques and the effectiveness of teachers’ feedback have been a question of much controversy. This present case study has been carried out with a view to finding out the patterns of teachers’ corrective feedback and their impact on students’ uptake in English speaking lessons of legal English major students at Hanoi Law University. In order to achieve those aims, the study makes use of classroom observations as the main method of data collection to seeks answers to the two following questions: 1. What patterns of corrective feedback occur in English speaking lessons for second- year legal English major students in Hanoi Law University?; 2. To what extent does that corrective feedback lead to students’ uptake? The study provided some important findings, among which was a close relationship between corrective feedback and uptake. In particular, recast was the most commonly used feedback type, yet it was the least effective in terms of students’ uptake and repair, while the most successful feedback, namely meta-linguistic feedback, clarification requests and elicitation, which led to students’ generated repair, was used at a much lower rate by teachers. Furthermore, it revealed that different types of errors needed different types of feedback. Also, the use of feedback depended on the students’ English proficiency level. In the light of findings, a number of pedagogical implications have been drawn in the hope of enhancing the effectiveness of teachers’ corrective feedback to students’ uptake in foreign language acquisition process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corrective%20feedback" title="corrective feedback">corrective feedback</a>, <a href="https://publications.waset.org/abstracts/search?q=error" title=" error"> error</a>, <a href="https://publications.waset.org/abstracts/search?q=uptake" title=" uptake"> uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=speaking%20English%20lesson" title=" speaking English lesson"> speaking English lesson</a> </p> <a href="https://publications.waset.org/abstracts/95225/corrective-feedback-and-uptake-patterns-in-english-speaking-lessons-at-hanoi-law-university" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95225.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">262</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">10</span> Payments for Forest Environmental Services: Advantages and Disadvantages in the Different Mechanisms in Vietnam North Central Area</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huong%20Nguyen%20Thi%20Thanh">Huong Nguyen Thi Thanh</a>, <a href="https://publications.waset.org/abstracts/search?q=Van%20Mai%20Thi%20Khanh"> Van Mai Thi Khanh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For around the world, payments for environmental services have been implemented since the late 1970s in Europe and North America; then, it was spread to Latin America, Asia, Africa, and finally Oceania in 2008. In Vietnam, payments for environmental services are an interesting issue recently with the forest as the main focus and therefore known as the program on payment for forest environmental services (PFES). PFES was piloted in Lam Dong and Son La in 2008 and has been widely applied in many provinces after 2010. PFES is in the orientation for the socialization of national forest protection in Vietnam and has made great strides in the last decade. By using the primary data and secondary data simultaneously, the paper clarifies two cases of implementing PFES in the Vietnam North Central area with the different mechanisms of payment. In the first case at Phu Loc district (Thua Thien Hue province), PFES is an indirect method by a water supply company via the Forest Protection and Development Fund. In the second one at Phong Nha – Ke Bang National Park (Quang Binh Province), tourism companies are the direct payers to forest owners. The paper describes the PFES implementation process at each site, clarifies the payment mechanism, and models the relationship between stakeholders in PFES implementation. Based on the current status of PFES sites, the paper compares and analyzes the advantages and disadvantages of the two payment methods. Finally, the paper proposes recommendations to improve the existing shortcomings in each payment mechanism. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advantages%20and%20disadvantages" title="advantages and disadvantages">advantages and disadvantages</a>, <a href="https://publications.waset.org/abstracts/search?q=forest%20environmental%20services" title=" forest environmental services"> forest environmental services</a>, <a href="https://publications.waset.org/abstracts/search?q=forest%20protection" title=" forest protection"> forest protection</a>, <a href="https://publications.waset.org/abstracts/search?q=payment%20mechanism" title=" payment mechanism"> payment mechanism</a> </p> <a href="https://publications.waset.org/abstracts/120285/payments-for-forest-environmental-services-advantages-and-disadvantages-in-the-different-mechanisms-in-vietnam-north-central-area" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120285.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">129</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Factors Associated with Depression: Insights from a Cross-Sectional Study among University Students in Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Diep%20The%20Tai">Diep The Tai</a>, <a href="https://publications.waset.org/abstracts/search?q=Huynh%20Phuong%20Thao"> Huynh Phuong Thao</a>, <a href="https://publications.waset.org/abstracts/search?q=Tran%20Cong%20Luan"> Tran Cong Luan</a>, <a href="https://publications.waset.org/abstracts/search?q=Nguyen%20Thi%20Hong%20Huong"> Nguyen Thi Hong Huong</a>, <a href="https://publications.waset.org/abstracts/search?q=Truong%20Thi%20Xuan%20Lien"> Truong Thi Xuan Lien</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Backgrounds: Depression is a prevalent mental health concern among university students. This cross-sectional study explores the factors associated with depression among university students in Vietnam. Methods: In 2022, a web-based survey was conducted among 2,304 students from different universities across North, Central, and South Vietnam. The Pearson chi-squared test was used to analyze the statistical associations between socio-demographic factors, depression levels, and social media addiction. Results: The results showed that 33,9% of freshmen experienced severe depression, with higher rates among females (69,8%) than males (30,2%). Health field students had the highest proportion of severe depression (52%). Social media addiction was prevalent among freshmen (29%) and health students (54,4%). Factors such as family infections, study pressure, hometown, studying in public places, and social media addiction were strongly linked to higher depression levels. However, spending more time communicating with friends and studying at home had a protective effect against depression. Notably, social media addiction was significantly associated with increased depression levels. Conclusion: The study highlights the influence of family COVID-19 infections, academic pressures, studying in public places, hometown, social media addiction, and lack of social interactions on depression levels. It underscores the importance of comprehensive approaches to address depression, promote resilience, and provide support to students during future outbreaks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Depression" title="Depression">Depression</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20media%20addiction" title=" social media addiction"> social media addiction</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20health" title=" mental health"> mental health</a>, <a href="https://publications.waset.org/abstracts/search?q=university%20students" title=" university students"> university students</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam" title=" Vietnam"> Vietnam</a> </p> <a href="https://publications.waset.org/abstracts/171006/factors-associated-with-depression-insights-from-a-cross-sectional-study-among-university-students-in-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171006.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">85</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Mutation Analysis of the ATP7B Gene in 43 Vietnamese Wilson’s Disease Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Huong%20M.%20T.%20Nguyen">Huong M. T. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoa%20A.%20P.%20Nguyen"> Hoa A. P. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20P.%20T.%20Nguyen"> Mai P. T. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ngoc%20D.%20Ngo"> Ngoc D. Ngo</a>, <a href="https://publications.waset.org/abstracts/search?q=Van%20T.%20Ta"> Van T. Ta</a>, <a href="https://publications.waset.org/abstracts/search?q=Hai%20T.%20Le"> Hai T. Le</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi%20V.%20Phan"> Chi V. Phan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wilson’s disease (WD) is an autosomal recessive disorder of the copper metabolism, which is caused by a mutation in the copper-transporting P-type ATPase (<em>ATP7B</em>). The mechanism of this disease is the failure of hepatic excretion of copper to bile, and leads to copper deposits in the liver and other organs. The <em>ATP7B</em> gene is located on the long arm of chromosome 13 (13q14.3). This study aimed to investigate the gene mutation in the Vietnamese patients with WD, and make a presymptomatic diagnosis for their familial members. Forty-three WD patients and their 65 siblings were identified as having <em>ATP7B</em> gene mutations. Genomic DNA was extracted from peripheral blood samples; 21 exons and exon-intron boundaries of the <em>ATP7B</em> gene were analyzed by direct sequencing. We recognized four mutations ([R723=; H724Tfs*34], V1042Cfs*79, D1027H, and IVS6+3A>G) in the sum of 20 detectable mutations, accounting for 87.2% of the total. Mutation S105* was determined to have a high rate (32.6%) in this study. The hotspot regions of <em>ATP7B</em> were found at exons 2, 16, and 8, and intron 14, in 39.6 %, 11.6 %, 9.3%, and 7 % of patients, respectively. Among nine homozygote/compound heterozygote siblings of the patients with WD, three individuals were determined as asymptomatic by screening mutations of the probands. They would begin treatment after diagnosis. In conclusion, 20 different mutations were detected in 43 WD patients. Of this number, four novel mutations were explored, including [R723=; H724Tfs*34], V1042Cfs*79, D1027H, and IVS6+3A>G. The mutation S105* is the most prevalent and has been considered as a biomarker that can be used in a rapid detection assay for diagnosis of WD patients. Exons 2, 8, and 16, and intron 14 should be screened initially for WD patients in Vietnam. Based on risk profile for WD, genetic testing for presymptomatic patients is also useful in diagnosis and treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ATP7B%20gene" title="ATP7B gene">ATP7B gene</a>, <a href="https://publications.waset.org/abstracts/search?q=mutation%20detection" title=" mutation detection"> mutation detection</a>, <a href="https://publications.waset.org/abstracts/search?q=presymptomatic%20diagnosis" title=" presymptomatic diagnosis"> presymptomatic diagnosis</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnamese%20Wilson%E2%80%99s%20disease" title=" Vietnamese Wilson’s disease"> Vietnamese Wilson’s disease</a> </p> <a href="https://publications.waset.org/abstracts/58250/mutation-analysis-of-the-atp7b-gene-in-43-vietnamese-wilsons-disease-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58250.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">380</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Development of Sustainability Indicators for Marine Ecosystem Management: Initial Research Results in Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tran%20Dinh%20Lan">Tran Dinh Lan</a>, <a href="https://publications.waset.org/abstracts/search?q=Do%20Thi%20Thu%20Huong"> Do Thi Thu Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among the 17 goals of the United Nations, 2030 Agenda for Sustainable Development, SDG 14.2 and SDG 14.4 under SDG 14 directly address the sustainable management, exploitation, and use of marine ecosystems. To achieve these goals, it is necessary to quantify the level of sustainable use of marine ecosystems, which have been paid attention for more than two decades in the direction of a quantitative approach by indicator and index development using methods of building and analyzing indicators and indices. With the employment of the above methods, over the past two decades, a number of marine ecosystems in Vietnam have been quantitatively evaluated for sustainable use for integrated coastal and marine management. Thirty indicators for sustainable use of marine ecosystems in the Northeast of Vietnam, together with indices, have been developed to assess mangrove, coral, and beach ecosystems. An assessment shows the following results. The mangrove ecosystem declined from sustainable to unsustainable uses in the period 1989-2007. The coral ecosystem in 2003 was at a sensitive point between sustainable and unsustainable uses. The beach ecosystem was evaluated with ten selected beaches in the period 2013-2018, showing that nine beaches are at a sustainable level, and one beach is at an unsustainable level. The Thua Thien-Hue coastal lagoon ecosystem assessed by 21 indicators of environmental vulnerability in 2014 showed less sustainability. The marine ecosystems around the offshore islands of Bach Long Vi, Con Co, and Tho Chu were tested to assess the level of sustainable use by the index of total economic value. The results show that these ecosystems are being used sustainably but are also at risk of falling to an unsustainable level (Tho Chu). The use of the environmental vulnerability index or economic value index to evaluate ecosystem sustainability only reflects parts of the function or value of the system but does not fully reflect the sustainability of the system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=index" title="index">index</a>, <a href="https://publications.waset.org/abstracts/search?q=indicators" title=" indicators"> indicators</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability%20evaluation" title=" sustainability evaluation"> sustainability evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=Vietnam%20marine%20ecosystems" title=" Vietnam marine ecosystems"> Vietnam marine ecosystems</a> </p> <a href="https://publications.waset.org/abstracts/152831/development-of-sustainability-indicators-for-marine-ecosystem-management-initial-research-results-in-vietnam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152831.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">108</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Evaluation of the Capabilities of Saccharomyces cerevisiae and Lactobacillus plantarum in Improvement of Total Phenolic Content and Antioxidant Activity in Carob Kibble</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thi%20Huong%20Vu">Thi Huong Vu</a>, <a href="https://publications.waset.org/abstracts/search?q=Vijay%20Jayasena"> Vijay Jayasena</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhongxiang%20Fang"> Zhongxiang Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Gary%20Dykes"> Gary Dykes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carob kibble has recently received attention due to the presence of high level of polyphenol antioxidants. The capacity of microorganisms to improve antioxidant activities and total phenolics in carob kibble was investigated in the study. Two types of microorganisms including lactic acid bacteria Lactobacillus plantarum (L. plantarum) and yeast Saccharomyces cerevisiae (S. cerevisiae) were used in single and in their combination as starters. The total phenolic content was determined by the Folin–Ciocalteu method. Antioxidant activities were assessed scavenging capacity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS). The study found that S. cerevisiae alone considerably improved 55% total phenolics content at 15 h, while L. plantarum caused in a loss of 20% through the process. Antioxidant capacity of the yeast-fermented samples significantly increased by 43 % and 10 % in ABTS and DPPH assays, respectively. However, reduction of 13 % and 32 % inhibition were recorded in the carob treated with L. plantarum. In the combination of S. cerevisiae and L. plantarum (1:1), both total phenolic content and antioxidant activity of carob kibble were a similar trend as these of S. cerevisiae single, but a lower improvement. The antioxidant power of the extracts was linearly correlated to their total phenolic contents (R=0.75). The results suggested that S. cerevisiae alone was the better for enhancement of both total phenolic content and antioxidant activity in carob kibble using submerged fermentation. The efficiency of fermentation reached the highest at 15h. Thus submerged fermentation with S. cerevisiae offers a tool with simple and cost effective to further increase the bioactive potential of carob kibble, which is in use for food, cosmetic and pharmaceutical industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title="antioxidant activity">antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=carob%20kibble" title=" carob kibble"> carob kibble</a>, <a href="https://publications.waset.org/abstracts/search?q=lactobacillus%20plantarum" title=" lactobacillus plantarum"> lactobacillus plantarum</a>, <a href="https://publications.waset.org/abstracts/search?q=saccharomyces%20cerevisiae" title=" saccharomyces cerevisiae"> saccharomyces cerevisiae</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20phenolics" title=" total phenolics"> total phenolics</a> </p> <a href="https://publications.waset.org/abstracts/54352/evaluation-of-the-capabilities-of-saccharomyces-cerevisiae-and-lactobacillus-plantarum-in-improvement-of-total-phenolic-content-and-antioxidant-activity-in-carob-kibble" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54352.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">290</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Pham-Thi%20Huong&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Pham-Thi%20Huong&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> 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