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fixation tests</title> <meta name="description" content="Search results for: latex fixation tests"> <meta name="keywords" content="latex fixation tests"> <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 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="latex fixation tests"> <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> 4706</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: latex fixation tests</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4706</span> Computational Fluid Dynamics (CFD) Simulations for Studying Flow Behaviors in Dipping Tank in Continuous Latex Gloves Production Lines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Worrapol%20Koranuntachai">Worrapol Koranuntachai</a>, <a href="https://publications.waset.org/abstracts/search?q=Tonkid%20Chantrasmi"> Tonkid Chantrasmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Udomkiat%20Nontakaew"> Udomkiat Nontakaew</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Medical latex gloves are made from the latex compound in production lines. Latex dipping is considered one of the most important processes that directly affect the final product quality. In a continuous production line, a chain conveyor carries the formers through the process and partially submerges them into an open channel flow in a latex dipping tank. In general, the conveyor speed is determined by the desired production capacity, and the latex-dipping tank can then be designed accordingly. It is important to understand the flow behavior in the dipping tank in order to achieve high quality in the process. In this work, Computational Fluid Dynamics (CFD) was used to simulate the flow past an array of formers in a simplified latex dipping process. The computational results showed both the flow structure and the vortex generation between two formers. The maximum shear stress over the surface of the formers was used as the quality metric of the latex-dipping process when adjusting operation parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medical%20latex%20gloves" title="medical latex gloves">medical latex gloves</a>, <a href="https://publications.waset.org/abstracts/search?q=latex%20dipping" title=" latex dipping"> latex dipping</a>, <a href="https://publications.waset.org/abstracts/search?q=dipping%20tank" title=" dipping tank"> dipping tank</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a> </p> <a href="https://publications.waset.org/abstracts/140902/computational-fluid-dynamics-cfd-simulations-for-studying-flow-behaviors-in-dipping-tank-in-continuous-latex-gloves-production-lines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140902.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">132</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">4705</span> Durability Assessment of Nanocomposite-Based Bone Fixation Device Consisting of Bioabsorbable Polymer and Ceramic Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jisoo%20Kim">Jisoo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Young%20Choi"> Jin-Young Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=MinSu%20Lee"> MinSu Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunmook%20Lee"> Sunmook Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Effects of ceramic nanoparticles on the improvement of durability of bone fixation devices have been investigated by assessing the durability of nanocomposite materials consisting of bioabsorbable polymer and ceramic nanoparticles, which could be applied for bone fixation devices such as plates and screws. Various composite ratios were used for the synthesis of nanocomposite materials by blending polylactic acid (PLA) and polyglycolic acid (PGA) as bioabsorbable polymer, and hydroxyapatite (HA) and tri-calcium phosphate (TCP) as ceramic nanoparticles. It was found that the addition of ceramic nanoparticles significantly enhanced the mechanical properties of the bone fixation devices compared to those fabricated with pure biopolymers. Particularly, the layer-by-layer approach for the fabrication of nanocomposites also had an effect on the improvement of bending strength. Durability tests were performed by measuring the changes in the bending strength of nanocomposite samples under varied temperature conditions for the accelerated degradation tests. It was found that Weibull distribution was the most proper one for describing the life distribution of devices in the present study. The mean lifetime was predicted by adopting Arrhenius Eq. Model for Stress-Life relationship. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioabsorbable" title="bioabsorbable">bioabsorbable</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20fixation%20device" title=" bone fixation device"> bone fixation device</a>, <a href="https://publications.waset.org/abstracts/search?q=ceramic%20nanoparticles" title=" ceramic nanoparticles"> ceramic nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=durability%20assessment" title=" durability assessment"> durability assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=nanocomposite" title=" nanocomposite"> nanocomposite</a> </p> <a href="https://publications.waset.org/abstracts/53095/durability-assessment-of-nanocomposite-based-bone-fixation-device-consisting-of-bioabsorbable-polymer-and-ceramic-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53095.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">326</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">4704</span> Cationic Surfactants Influence on the Fouling Phenomenon Control in Ultrafiltration of Latex Contaminated Water and Wastewater</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amira%20Abdelrasoul">Amira Abdelrasoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Huu%20Doan"> Huu Doan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Lohi"> Ali Lohi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The goal of the present study was to minimize the ultrafiltration fouling of latex effluent using Cetyltrimethyl ammonium bromide (CTAB) as a cationic surfactant. Hydrophilic Polysulfone and Ultrafilic flat heterogeneous membranes, with MWCO of 60,000 and 100,000, respectively, as well as hydrophobic Polyvinylidene Difluoride with MWCO of 100,000, were used under a constant flow rate and cross-flow mode in ultrafiltration of latex solution. In addition, a Polycarbonate flat membrane with uniform pore size of 0.05 µm was also used. The effect of CTAB on the latex particle size distribution was investigated at different concentrations, various treatment times, and diverse agitation duration. The effects of CTAB on the zeta potential of latex particles and membrane surfaces were also investigated. The results obtained indicated that the particle size distribution of treated latex effluent showed noticeable shifts in the peaks toward a larger size range due to the aggregation of particles. As a consequence, the mass of fouling contributing to pore blocking and the irreversible fouling were significantly reduced. The optimum results occurred with the addition of CTAB at the critical micelle concentration of 0.36 g/L for 10 minutes with minimal agitation. Higher stirring rate had a negative effect on membrane fouling minimization. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cationic%20surfactant" title="cationic surfactant">cationic surfactant</a>, <a href="https://publications.waset.org/abstracts/search?q=latex%20particles" title=" latex particles"> latex particles</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane%20fouling" title=" membrane fouling"> membrane fouling</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrafiltration" title=" ultrafiltration"> ultrafiltration</a>, <a href="https://publications.waset.org/abstracts/search?q=zeta%20potential" title=" zeta potential"> zeta potential</a> </p> <a href="https://publications.waset.org/abstracts/16538/cationic-surfactants-influence-on-the-fouling-phenomenon-control-in-ultrafiltration-of-latex-contaminated-water-and-wastewater" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16538.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">528</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">4703</span> Amblyopia and Eccentric Fixation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kristine%20Kalnica-Dorosenko">Kristine Kalnica-Dorosenko</a>, <a href="https://publications.waset.org/abstracts/search?q=Aiga%20Svede"> Aiga Svede</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Amblyopia or 'lazy eye' is impaired or dim vision without obvious defect or change in the eye. It is often associated with abnormal visual experience, most commonly strabismus, anisometropia or both, and form deprivation. The main task of amblyopia treatment is to ameliorate etiological factors to create a clear retinal image and, to ensure the participation of the amblyopic eye in the visual process. The treatment of amblyopia and eccentric fixation is usually associated with problems in the therapy. Eccentric fixation is present in around 44% of all patients with amblyopia and in 30% of patients with strabismic amblyopia. In Latvia, amblyopia is carefully treated in various clinics, but eccentricity diagnosis is relatively rare. Conflict which has developed relating to the relationship between the visual disorder and the degree of eccentric fixation in amblyopia should to be rethoughted, because it has an important bearing on the cause and treatment of amblyopia, and the role of the eccentric fixation in this case. Visuoscopy is the most frequently used method for determination of eccentric fixation. With traditional visuoscopy, a fixation target is projected onto the patient retina, and the examiner asks to look straight directly at the center of the target. An optometrist then observes the point on the macula used for fixation. This objective test provides clinicians with direct observation of the fixation point of the eye. It requires patients to voluntarily fixate the target and assumes the foveal reflex accurately demarcates the center of the foveal pit. In the end, by having a very simple method to evaluate fixation, it is possible to indirectly evaluate treatment improvement, as eccentric fixation is always associated with reduced visual acuity. So, one may expect that if eccentric fixation in amlyopic eye is found with visuoscopy, then visual acuity should be less than 1.0 (in decimal units). With occlusion or another amblyopia therapy, one would expect both visual acuity and fixation to improve simultaneously, that is fixation would become more central. Consequently, improvement in fixation pattern by treatment is an indirect measurement of improvement of visual acuity. Evaluation of eccentric fixation in the child may be helpful in identifying amblyopia in children prior to measurement of visual acuity. This is very important because the earlier amblyopia is diagnosed – the better the chance of improving visual acuity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amblyopia" title="amblyopia">amblyopia</a>, <a href="https://publications.waset.org/abstracts/search?q=eccentric%20fixation" title=" eccentric fixation"> eccentric fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=visual%20acuity" title=" visual acuity"> visual acuity</a>, <a href="https://publications.waset.org/abstracts/search?q=visuoscopy" title=" visuoscopy"> visuoscopy</a> </p> <a href="https://publications.waset.org/abstracts/129550/amblyopia-and-eccentric-fixation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129550.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">158</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">4702</span> New Ethanol Method for Soft Tissue Imaging in Micro-CT</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matej%20Patzelt">Matej Patzelt</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Dudak"> Jan Dudak</a>, <a href="https://publications.waset.org/abstracts/search?q=Frantisek%20Krejci"> Frantisek Krejci</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20Zemlicka"> Jan Zemlicka</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Musil"> Vladimir Musil</a>, <a href="https://publications.waset.org/abstracts/search?q=Jitka%20Riedlova"> Jitka Riedlova</a>, <a href="https://publications.waset.org/abstracts/search?q=Viktor%20Sykora"> Viktor Sykora</a>, <a href="https://publications.waset.org/abstracts/search?q=Jana%20Mrzilkova"> Jana Mrzilkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Petr%20Zach"> Petr Zach</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Micro-CT is well used for examination of bone structures and teeth. On the other hand visualization of the soft tissues is still limited. The goal of our study was to create a new fixation method for soft tissue imaging in micro-CT. Methodology: We used organs of 18 mice - heart, lungs, kidneys, liver and brain, which we fixated in ethanol after meticulous preparation. We fixated organs in different concentrations of ethanol and for different period of time. We used three types of ethanol concentration - 97%, 50% and ascending ethanol concentration (25%, 50%, 75%, 97% each for 12 hours). Fixated organs were scanned after 72 hours, 168 hours and 336 hours period of fixation. We scanned all specimens in micro-CT MARS (Medipix All Resolution System). Results: Ethanol method provided contrast enhancement in all studied organs in all used types of fixation. Fixation in 97% ethanol provided very fast fixation and the contrast among the tissues was visible already after 72 hours of fixation. Fixation for the period of 168 and 336 hours gave better details, especially in lung tissue, where alveoli were visualized. On the other hand, this type of fixation caused organs to petrify. Fixation in 50% ethanol provided best results in 336 hours fixation, details were visualized better than in 97% ethanol and samples were not as hard as in fixation in 97% ethanol. Best results were obtained in fixation in ascending ethanol concentration. All organs were visualized in great details, best-visualized organ was heart, where trabeculae and valves were visible. In this type of fixation, organs stayed soft for whole time. Conclusion: New ethanol method is a great option for soft tissue fixation as well as the method for enhancing contrast among tissues in organs. The best results were obtained with fixation of the organs in ascending ethanol concentration, the best visualized organ was the heart. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=x-ray%20imaging" title="x-ray imaging">x-ray imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20animals" title=" small animals"> small animals</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanol" title=" ethanol"> ethanol</a>, <a href="https://publications.waset.org/abstracts/search?q=ex-vivo" title=" ex-vivo"> ex-vivo</a> </p> <a href="https://publications.waset.org/abstracts/47376/new-ethanol-method-for-soft-tissue-imaging-in-micro-ct" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47376.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">4701</span> Thermal Analysis of a Composite of Coco Fiber and Látex</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elmo%20Thiago%20Lins%20C%C3%B6uras%20Ford">Elmo Thiago Lins Cöuras Ford</a>, <a href="https://publications.waset.org/abstracts/search?q=Valentina%20Alessandra%20Carvalho%20do%20Vale"> Valentina Alessandra Carvalho do Vale</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Given the unquestionable need of environmental preservation, the natural fibers have been seen as a salutary alternative for production of composites in substitution to the synthetic fibers, vitreous and metallic. In this work, the behavior of a composite was analyzed done with fiber of the peel of the coconut as reinforcement and latex as head office, when submitted the source of heat. The temperature profiles were verified in the internal surfaces and it expresses of the composite as well as the temperature gradient in the same. It was also analyzed the behavior of this composite when submitted to a cold source. As consequence, in function of the answers of the system, conclusions were reached. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=natural%20fiber" title="natural fiber">natural fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=latex" title=" latex"> latex</a>, <a href="https://publications.waset.org/abstracts/search?q=gradient" title=" gradient"> gradient</a> </p> <a href="https://publications.waset.org/abstracts/18373/thermal-analysis-of-a-composite-of-coco-fiber-and-latex" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18373.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">817</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">4700</span> Analyze and Visualize Eye-Tracking Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aymen%20Sekhri">Aymen Sekhri</a>, <a href="https://publications.waset.org/abstracts/search?q=Emmanuel%20Kwabena%20Frimpong"> Emmanuel Kwabena Frimpong</a>, <a href="https://publications.waset.org/abstracts/search?q=Bolaji%20Mubarak%20Ayeyemi"> Bolaji Mubarak Ayeyemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Aleksi%20Hirvonen"> Aleksi Hirvonen</a>, <a href="https://publications.waset.org/abstracts/search?q=Matias%20Hirvonen"> Matias Hirvonen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tedros%20Tesfay%20Andemichael"> Tedros Tesfay Andemichael</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fixation identification, which involves isolating and identifying fixations and saccades in eye-tracking protocols, is an important aspect of eye-movement data processing that can have a big impact on higher-level analyses. However, fixation identification techniques are frequently discussed informally and rarely compared in any meaningful way. With two state-of-the-art algorithms, we will implement fixation detection and analysis in this work. The velocity threshold fixation algorithm is the first algorithm, and it identifies fixation based on a threshold value. For eye movement detection, the second approach is U'n' Eye, a deep neural network algorithm. The goal of this project is to analyze and visualize eye-tracking data from an eye gaze dataset that has been provided. The data was collected in a scenario in which individuals were shown photos and asked whether or not they recognized them. The results of the two-fixation detection approach are contrasted and visualized in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=human-computer%20interaction" title="human-computer interaction">human-computer interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=eye-tracking" title=" eye-tracking"> eye-tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=CNN" title=" CNN"> CNN</a>, <a href="https://publications.waset.org/abstracts/search?q=fixations" title=" fixations"> fixations</a>, <a href="https://publications.waset.org/abstracts/search?q=saccades" title=" saccades"> saccades</a> </p> <a href="https://publications.waset.org/abstracts/149628/analyze-and-visualize-eye-tracking-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149628.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">135</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">4699</span> Diagnosis of Rotavirus Infection among Egyptian Children by Using Different Laboratory Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Alhammad">Mohamed A. Alhammad</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadia%20A.%20Abou-Donia"> Hadia A. Abou-Donia</a>, <a href="https://publications.waset.org/abstracts/search?q=Mona%20H.%20Hashish"> Mona H. Hashish</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20N.%20Massoud"> Mohamed N. Massoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Rotavirus is the leading etiologic agent of severe diarrheal disease in infants and young children worldwide. The present study was aimed 1) to detect rotavirus infection as a cause of diarrhoea among children under 5 years of age using the two serological methods (ELISA and LA) and the PCR technique (2) to evaluate the three methodologies used for human RV detection in stool samples. Materials and Methods: This study was carried out on 247 children less than 5 years old, diagnosed clinically as acute gastroenteritis and attending Alexandria University Children Hospital at EL-Shatby. Rotavirus antigen was screened by ELISA and LA tests in all stool samples, whereas only 100 samples were subjected to RT-PCR method for detection of rotavirus RNA. Results: Out of the 247 studied cases with diarrhoea, rotavirus antigen was detected in 83 (33.6%) by ELISA and 73 (29.6%) by LA, while the 100 cases tested by RT-PCR showed that 44% of them had rotavirus RNA. Rotavirus diarrhoea was significantly presented with a marked seasonal peak during autumn and winter (61.4%). Conclusion: The present study confirms the huge burden of rotavirus as a major cause of acute diarrhoea in Egyptian infants and young children. It was concluded that; LA is equal in sensitivity to ELISA, ELISA is more specific than LA, and RT-PCR is more specific than ELISA and LA in diagnosis of rotavirus infection. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rotavirus" title="rotavirus">rotavirus</a>, <a href="https://publications.waset.org/abstracts/search?q=diarrhea" title=" diarrhea"> diarrhea</a>, <a href="https://publications.waset.org/abstracts/search?q=immunoenzyme%20techniques" title=" immunoenzyme techniques"> immunoenzyme techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=latex%20fixation%20tests" title=" latex fixation tests"> latex fixation tests</a>, <a href="https://publications.waset.org/abstracts/search?q=RT-PCR" title=" RT-PCR"> RT-PCR</a> </p> <a href="https://publications.waset.org/abstracts/21006/diagnosis-of-rotavirus-infection-among-egyptian-children-by-using-different-laboratory-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21006.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">370</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">4698</span> Eye Tracking: Biometric Evaluations of Instructional Materials for Improved Learning </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Janet%20Holland">Janet Holland</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Eye tracking is a great way to triangulate multiple data sources for deeper, more complete knowledge of how instructional materials are really being used and emotional connections made. Using sensor based biometrics provides a detailed local analysis in real time expanding our ability to collect science based data for a more comprehensive level of understanding, not previously possible, for teaching and learning. The knowledge gained will be used to make future improvements to instructional materials, tools, and interactions. The literature has been examined and a preliminary pilot test was implemented to develop a methodology for research in Instructional Design and Technology. Eye tracking now offers the addition of objective metrics obtained from eye tracking and other biometric data collection with analysis for a fresh perspective. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=area%20of%20interest" title="area of interest">area of interest</a>, <a href="https://publications.waset.org/abstracts/search?q=eye%20tracking" title=" eye tracking"> eye tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=biometrics" title=" biometrics"> biometrics</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation" title=" fixation"> fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation%20count" title=" fixation count"> fixation count</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation%20sequence" title=" fixation sequence"> fixation sequence</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation%20time" title=" fixation time"> fixation time</a>, <a href="https://publications.waset.org/abstracts/search?q=gaze%20points" title=" gaze points"> gaze points</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20map" title=" heat map"> heat map</a>, <a href="https://publications.waset.org/abstracts/search?q=saccades" title=" saccades"> saccades</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20to%20first%20fixation" title=" time to first fixation"> time to first fixation</a> </p> <a href="https://publications.waset.org/abstracts/104914/eye-tracking-biometric-evaluations-of-instructional-materials-for-improved-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104914.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">4697</span> Study on Errors in Estimating the 3D Gaze Point for Different Pupil Sizes Using Eye Vergences</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Pomianek">M. Pomianek</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Piszczek"> M. Piszczek</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Maciejewski"> M. Maciejewski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The binocular eye tracking technology is increasingly being used in industry, entertainment and marketing analysis. In the case of virtual reality, eye tracking systems are already the basis for user interaction with the environment. In such systems, the high accuracy of determining the user's eye fixation point is very important due to the specificity of the virtual reality head-mounted display (HMD). Often, however, there are unknown errors occurring in the used eye tracking technology, as well as those resulting from the positioning of the devices in relation to the user's eyes. However, can the virtual environment itself influence estimation errors? The paper presents mathematical analyses and empirical studies of the determination of the fixation point and errors resulting from the change in the size of the pupil in response to the intensity of the displayed scene. The article contains both static laboratory tests as well as on the real user. Based on the research results, optimization solutions were proposed that would reduce the errors of gaze estimation errors. Studies show that errors in estimating the fixation point of vision can be minimized both by improving the pupil positioning algorithm in the video image and by using more precise methods to calibrate the eye tracking system in three-dimensional space. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eye%20tracking" title="eye tracking">eye tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation%20point" title=" fixation point"> fixation point</a>, <a href="https://publications.waset.org/abstracts/search?q=pupil%20size" title=" pupil size"> pupil size</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20reality" title=" virtual reality"> virtual reality</a> </p> <a href="https://publications.waset.org/abstracts/107901/study-on-errors-in-estimating-the-3d-gaze-point-for-different-pupil-sizes-using-eye-vergences" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107901.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">132</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">4696</span> Cytotoxic Activity against Hepatocarcinoma and Cholangiocarcinoma Cells of Four Cathartic Herbal Medicines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pranporn%20Kuropakornpong">Pranporn Kuropakornpong</a>, <a href="https://publications.waset.org/abstracts/search?q=Srisopa%20Ruangnoo"> Srisopa Ruangnoo</a>, <a href="https://publications.waset.org/abstracts/search?q=Arunporn%20Itharat"> Arunporn Itharat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Liver cancer has the highest prevalence rate in the North and Northeast of Thailand. Four Thai medicinal plants such as resin of Ferula asafoetida Regel, latex of Aloe barbadensis Miller leaves, roots of Baliospermum manotanum, and latex of Garcinia hanburyi Hook are used in Thai traditional medicine as cathartic drug and detoxification in liver cancer patients. Thus, this research aimed to evaluate the cytotoxic activity of these plants against hepatocarcinoma (HepG2) and cholangiocarcinoma (KKU-M156) cells by SRB assay. These plants were macerated in 95% ethanol. The results showed that roots of Baliospermum manotanum and latex of Garcinia hanburyi Hook showed the strongest cytotoxicity against HepG2 (IC50 = 3.03+0.91 and 0.62+0.01µg/ml, respectively) and KKU-M156 (IC50 = 0.978+0.663 and 0.006+0.005 µg/ml, respectively). Latex of Garcinia hanburyi Hook also showed high cytotoxicity against normal cell line (IC50=8.86+0.31 µg/ml), and even though its selective values are high, dose of this herb should be limited. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cholangiocarcinoma" title="cholangiocarcinoma">cholangiocarcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxic%20activity" title=" cytotoxic activity"> cytotoxic activity</a>, <a href="https://publications.waset.org/abstracts/search?q=Garcinia%20hanburyi%20Hook" title=" Garcinia hanburyi Hook"> Garcinia hanburyi Hook</a>, <a href="https://publications.waset.org/abstracts/search?q=hepatocarcinoma" title=" hepatocarcinoma "> hepatocarcinoma </a> </p> <a href="https://publications.waset.org/abstracts/25232/cytotoxic-activity-against-hepatocarcinoma-and-cholangiocarcinoma-cells-of-four-cathartic-herbal-medicines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25232.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">451</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">4695</span> Hybrid Fixation in Management of Proximal Diaphyseal Forearm Bone Fractures in Children</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Aly">Tarek Aly</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Maintenance of the length, providing rotational stability, and preserving functional range of forearm motion is the mainstay of both bone forearm fractures treatment. Conservative treatment in older children may lead to malunion with poor remodeling capacity. Recent studies emphasized that the rate of complications with IM nailing was obviously increased in old children. Open reduction and internal fixation have been criticized for the amount of soft tissue dissection and periosteal stripping needed for fixation and excessive scar formation. The aim of this study was to evaluate the anatomical and functional outcomes of hybrid fixation in the treatment of closed proximal radius and ulna fractures in adolescents between 12 and 17 years of age. Patients and Methods: 30 cases of diaphyseal both bone forearm fractures treated with hybrid fixation (Nail radius – Plate ulna) and were available for a follow-up period of fewer than 24 months. Results: Clinically, 72% of cases had an excellent function, 22% had a good function, 4% had a fair function, and 2% had a poor function. Radiologically, signs of the union had appeared in the radius 2weeks earlier than in the ulna in 55% of cases. Conclusion: A hybrid fixation technique in adolescent proximal both-bones forearm fractures could be a viable option in managing these injuries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hyprid%20fixation" title="hyprid fixation">hyprid fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=both%20bones" title=" both bones"> both bones</a>, <a href="https://publications.waset.org/abstracts/search?q=forearm" title=" forearm"> forearm</a>, <a href="https://publications.waset.org/abstracts/search?q=fractures" title=" fractures"> fractures</a> </p> <a href="https://publications.waset.org/abstracts/149793/hybrid-fixation-in-management-of-proximal-diaphyseal-forearm-bone-fractures-in-children" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149793.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">4694</span> Polymer Modification of Fine Grained Concretes Used in Textile Reinforced Cementitious Composites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Esma%20Gizem%20Daskiran">Esma Gizem Daskiran</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehmet%20Mustafa%20Daskiran"> Mehmet Mustafa Daskiran</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Gencoglu"> Mustafa Gencoglu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Textile reinforced cementitious composite (TRCC) is a development of a composite material where textile and fine-grained concrete (matrix) materials are used in combination. These matrices offer high performance properties in many aspects. To achieve high performance, polymer modified fine-grained concretes were used as matrix material which have high flexural strength. In this study, ten latex polymers and ten powder polymers were added to fine-grained concrete mixtures. These latex and powder polymers were added to the mixtures at different rates related to binder weight. Mechanical properties such as compressive and flexural strength were studied. Results showed that latex polymer and redispersible polymer modified fine-grained concretes showed different mechanical performance. A wide range of both latex and redispersible powder polymers were studied. As the addition rate increased compressive strength decreased for all mixtures. Flexural strength increased as the addition rate increased but significant enhancement was not observed through all mixtures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=textile%20reinforced%20composite" title="textile reinforced composite">textile reinforced composite</a>, <a href="https://publications.waset.org/abstracts/search?q=cement" title=" cement"> cement</a>, <a href="https://publications.waset.org/abstracts/search?q=fine%20grained%20concrete" title=" fine grained concrete"> fine grained concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=latex" title=" latex"> latex</a>, <a href="https://publications.waset.org/abstracts/search?q=redispersible%20powder" title=" redispersible powder"> redispersible powder</a> </p> <a href="https://publications.waset.org/abstracts/80870/polymer-modification-of-fine-grained-concretes-used-in-textile-reinforced-cementitious-composites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80870.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">256</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4693</span> Analysis of the Reaction to the Fire of a Composite Material the Base of Scrapes of Tires and Latex for Thermal Isolation in Vehicles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elmo%20Thiao%20Lins%20C%C3%B6uras%20Ford">Elmo Thiao Lins Cöuras Ford</a>, <a href="https://publications.waset.org/abstracts/search?q=Valentina%20Alessandra%20Carvalho%20do%20Vale"> Valentina Alessandra Carvalho do Vale</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20M.%20Nascimento"> R. M. Nascimento</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20U.%20L.%20Mendes"> J. U. L. Mendes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Now the great majority of the applications of thermal isolation in the strip of drops and averages temperatures (up to 200ºC), it is made being used from aggressive materials to the nature such an as: glass wool, rock wool, polystyrene, EPS among others. Such materials, in spite of the effectiveness in the retention of the flow of heat, possess considerable cost and when discarded they are long years to be to decompose. In that context, trying to adapt the world politics the about of the preservation of the environment, a study began with intention of developing a material composite, with properties of thermal, originating from insulating industrial residues. In this research, the behavior of the composite was analyzed, as submitted the fire. For this, the reaction rehearsals were accomplished to the fire for the composites 2:1; 1:1; 1:2 and for the latex, based in the "con" experiment in agreement with the norm ASTM–E 1334-90. As consequence, in function of the answers of the system, was possible to observe to the acting of each mixture proportion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite" title="composite">composite</a>, <a href="https://publications.waset.org/abstracts/search?q=Latex" title=" Latex"> Latex</a>, <a href="https://publications.waset.org/abstracts/search?q=reacion%20to%20the%20fire" title=" reacion to the fire"> reacion to the fire</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20isolation" title=" thermal isolation"> thermal isolation</a> </p> <a href="https://publications.waset.org/abstracts/18376/analysis-of-the-reaction-to-the-fire-of-a-composite-material-the-base-of-scrapes-of-tires-and-latex-for-thermal-isolation-in-vehicles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18376.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">435</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">4692</span> Fast-Modulated Surface-Confined Plasma for Catalytic Nitrogen Fixation and Energy Intensification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pradeep%20Lamichhane">Pradeep Lamichhane</a>, <a href="https://publications.waset.org/abstracts/search?q=Nima%20Pourali"> Nima Pourali</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20V.%20Rebrov"> E. V. Rebrov</a>, <a href="https://publications.waset.org/abstracts/search?q=Volker%20Hessel"> Volker Hessel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nitrogen fixation is critical for plants for the biosynthesis of protein and nucleic acid. Most of our atmosphere is nitrogen, yet plants cannot directly absorb it from the air, and natural nitrogen fixation is insufficient to meet the demands. This experiment used a fast-modulated surface-confined atmospheric pressure plasma created by a 6 kV (peak-peak) sinusoidal power source with a repetition frequency of 68 kHz to fix nitrogen. Plasmas have been proposed for excitation of nitrogen gas, which quickly oxidised to NOX. With different N2/O2 input ratios, the rate of NOX generation was investigated. The rate of NOX production was shown to be optimal for mixtures of 60–70% O2 with N2. To boost NOX production in plasma, metal oxide catalysts based on TiO2 were coated over the dielectric layer of a reactor. These results demonstrate that nitrogen activation was more advantageous in surface-confined plasma sources because micro-discharges formed on the sharp edges of the electrodes, which is a primary function attributed to NOX synthesis and is further enhanced by metal oxide catalysts. The energy-efficient and sustainable NOX synthesis described in this study will offer a fresh perspective for ongoing research on green nitrogen fixation techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nitrogen%20fixation" title="nitrogen fixation">nitrogen fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=fast-modulated" title=" fast-modulated"> fast-modulated</a>, <a href="https://publications.waset.org/abstracts/search?q=surface-confined" title=" surface-confined"> surface-confined</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable" title=" sustainable"> sustainable</a> </p> <a href="https://publications.waset.org/abstracts/154873/fast-modulated-surface-confined-plasma-for-catalytic-nitrogen-fixation-and-energy-intensification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154873.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">107</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4691</span> Design and Optimization of a Customized External Fixation Device for Lower Limb Injuries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20S.%20Alqahtani">Mohammed S. Alqahtani</a>, <a href="https://publications.waset.org/abstracts/search?q=Paulo%20J.%20Bartolo"> Paulo J. Bartolo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> External fixation is a common technique for the treatment and stabilization of bone fractures. Different designs have been proposed by companies and research groups, but all of them present limitations such as high weight, not comfortable to use, and not customized to individual patients. This paper proposes a lightweight customized external fixator, overcoming some of these limitations. External fixators are designed using a set of techniques such as medical imaging, CAD modelling, finite element analysis, and full factorial design of experiments. Key design parameters are discussed, and the optimal set of parameters is used to design the final external fixator. Numerical simulations are used to validate design concepts. Results present an optimal external fixation design with weight reduction of 13% without compromising its stiffness and structural integrity. External fixators are also designed to be additively manufactured, allowing to develop a strategy for personalization. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computer-aided%20design%20modelling" title="computer-aided design modelling">computer-aided design modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=external%20fixation" title=" external fixation"> external fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis"> finite element analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=full%20factorial" title=" full factorial"> full factorial</a>, <a href="https://publications.waset.org/abstracts/search?q=personalization" title=" personalization"> personalization</a> </p> <a href="https://publications.waset.org/abstracts/132633/design-and-optimization-of-a-customized-external-fixation-device-for-lower-limb-injuries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132633.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">159</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">4690</span> Nitrogen Fixation, Cytokinin and Exopolysachharide Production by indigenous Azotobacter spp. from East Nusa Tenggara </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reginawanti%20Hindersah">Reginawanti Hindersah</a>, <a href="https://publications.waset.org/abstracts/search?q=Widiya%20Septiani%20Perdanawati"> Widiya Septiani Perdanawati</a>, <a href="https://publications.waset.org/abstracts/search?q=Dewi%20Azizah%20Sulaksana"> Dewi Azizah Sulaksana</a>, <a href="https://publications.waset.org/abstracts/search?q=Hidiyah%20Ayu%20Ma%E2%80%99rufah"> Hidiyah Ayu Ma’rufah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Maize in some region in East Nusa Tenggara Indonesia bordering Republic Democratic of Timor Leste is important local food crop and commonly cultivated using conventional method without appropriate plant nutrition system so that productivity is still low. A way to enhance local corn yield is adding biofertilizer containing nitrogen (N2) fixing bacteria such as Azotobacter. The purpose of this research was to determine N2 fixation, cytokinin as well as exopolysachharide production capacity of six indigenous Azotobacter strains in pure culture. The N2 fixation capacities of native 3 day old Azotobacter strains added to Ashby Media varied from 0.01 to 0.39 µM/g/hour. Cytokinin production of these strain in liquid culture of N-free Media was 0.11 to 40.04 ppm while exopolysachharide content in liquid culture of Vermani Media varied from 0.4 to 27.3 g/L. This results demonstrate that some local Azotobacter strains might be used as biofertilizer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=azotobacter" title="azotobacter">azotobacter</a>, <a href="https://publications.waset.org/abstracts/search?q=local%20isolate" title=" local isolate"> local isolate</a>, <a href="https://publications.waset.org/abstracts/search?q=N%20fixation" title=" N fixation"> N fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=phythohormone" title=" phythohormone"> phythohormone</a>, <a href="https://publications.waset.org/abstracts/search?q=exopolysaccaride" title=" exopolysaccaride"> exopolysaccaride</a> </p> <a href="https://publications.waset.org/abstracts/24247/nitrogen-fixation-cytokinin-and-exopolysachharide-production-by-indigenous-azotobacter-spp-from-east-nusa-tenggara" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24247.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">432</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">4689</span> Comparative Study of Outcomes of Nonfixation of Mesh versus Fixation in Laparoscopic Total Extra Peritoneal (TEP) Repair of Inguinal Hernia: A Prospective Randomized Controlled Trial</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raman%20Sharma">Raman Sharma</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20K.%20Jain"> S. K. Jain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aims and Objectives: Fixation of the mesh during laparoscopic total extraperitoneal (TEP) repair of inguinal hernia is thought to be necessary to prevent recurrence. However, mesh ﬁxation may increase surgical complications and postoperative pain. Our objective was to compare the outcomes of nonﬁxation with ﬁxation of polypropylene mesh by metal tacks during TEP repair of inguinal hernia. Methods: Forty patients aged 18 to72 years with inguinal hernia were included who underwent laparoscopic TEP repair of inguinal hernia with (n=20) or without (n=20) fixation of the mesh. The outcomes were operative duration, postoperative pain score, cost, in-hospital stay, time to return to normal activity, and complications. Results: Patients in whom the mesh was not fixed had shorter mean operating time (p < 0.05). We found no difference between groups in the postoperative pain score, incidence of recurrence, in-hospital stay, time to return to normal activity and complications (P > 0.05). Moreover, a net cost savings was realized for each hernia repair performed without stapled mesh. Conclusions: TEP repair without mesh fixation resulted in the shorter operating time and lower operative cost with no difference between groups in the postoperative pain score, incidence of recurrence, in-hospital stay, time to return to normal activity and complications. All this contribute to make TEP repair without mesh fixation a better choice for repair of uncomplicated inguinal hernia, especially in developing nations with scarce resources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=postoperative%20pain%20score" title="postoperative pain score">postoperative pain score</a>, <a href="https://publications.waset.org/abstracts/search?q=inguinal%20hernia" title=" inguinal hernia"> inguinal hernia</a>, <a href="https://publications.waset.org/abstracts/search?q=nonfixation%20of%20mesh" title=" nonfixation of mesh"> nonfixation of mesh</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20extra%20peritoneal%20%28TEP%29" title=" total extra peritoneal (TEP)"> total extra peritoneal (TEP)</a> </p> <a href="https://publications.waset.org/abstracts/36490/comparative-study-of-outcomes-of-nonfixation-of-mesh-versus-fixation-in-laparoscopic-total-extra-peritoneal-tep-repair-of-inguinal-hernia-a-prospective-randomized-controlled-trial" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36490.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">343</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">4688</span> Impact of Heavy Metal Toxicity on Metabolic Changes in the Diazotrophic Cyanobacterium Anabaena PCC 7120 </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rishi%20Saxena">Rishi Saxena</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cyanobacteria is a photosynthetic prokaryote, and these obtain their energy through photosynthesis. In this paper, we studied the effect of iron on metabolic changes in the diazotrophic cyanobacterium Anabaena PCC 7120. Nowadays, metal contamination due to natural and anthropogenic sources is a global environment concern. Iron induced changes in growth, N2-fixation, CO2 fixation and photosynthetic activity were studied in a diazotrophic cyanobacterium Anabaena PCC 7120. Iron at 50 uM concentration supported the maximum growth, heterocyst frequency, CO2 fixation, photosystem I (PS I), photosystem II (PS II) and nitrogenase activities in the organism. Higher concentration of iron inhibited these processes. Chl a and PS II activities were more sensitive to iron than the protein and PS I activity. Here, it is also mentioned that heavy metal induced altered macromolecules metabolism and changes in the central dogma of life (DNA→ mRNA → Protein). And also recent advances have been made in understanding heavy metal-cyanobacteria interaction and their application for metal detoxification. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyanobacterium%20anabaena%207120" title="cyanobacterium anabaena 7120">cyanobacterium anabaena 7120</a>, <a href="https://publications.waset.org/abstracts/search?q=nitrogen%20fixation" title=" nitrogen fixation"> nitrogen fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=photosystem%20I%20%28PS%20I%29" title=" photosystem I (PS I)"> photosystem I (PS I)</a>, <a href="https://publications.waset.org/abstracts/search?q=photosystem%20II%20%28PS%20II%29" title=" photosystem II (PS II)"> photosystem II (PS II)</a> </p> <a href="https://publications.waset.org/abstracts/120954/impact-of-heavy-metal-toxicity-on-metabolic-changes-in-the-diazotrophic-cyanobacterium-anabaena-pcc-7120" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120954.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">135</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">4687</span> Plasma-Assisted Nitrogen Fixation for the Elevation of Seed Germination and Plant Growth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pradeep%20Lamichhane">Pradeep Lamichhane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Plasma-assisted nitrogen fixation is a process by which atomic nitrogen generated by plasma is converted into ammonia (NH₃) or related nitrogenous compounds. Nitrogen fixation is essential to plant because fixed inorganic nitrogen compounds are required to them for the biosynthesis of all nitrogen-containing organic compounds, such as amino acids and proteins, nucleoside triphosphates and nucleic acid. Most of our atmosphere is composed of nitrogen; however, the plant cannot absorb it directly from the air ambient. As a portion of the nitrogen cycle, nitrogen fixation fundamental for agriculture and the manufacture of fertilizer. In this study, plasma-assisted nitrogen fixation was performed by exposing a non-thermal atmospheric pressure nitrogen plasma generated a sinusoidal power supply (with an applied voltage of 10 kV and frequency of 33 kHz) on a water surface. Besides this, UV excitation of water molecules at the water interface was also done in order to disassociate water. Hydrogen and hydroxyl radical obtained from this UV photolysis electrochemically combine with nitrogen atom obtained from plasma. As a result of this, nitrogen fixation on plasma-activated water (PAW) significantly enhanced. The amount of nitrogen-based products like NOₓ and ammonia (NH₃) synthesized by this combined process of UV and plasma are 1.4 and 2.8 times higher than those obtained by plasma alone. In every 48 hours, 20 ml of plasma-activated water (pH≈3.15) for 10 minutes with moderate concentrations of NOₓ, NH₃ and hydrogen peroxide (H₂O₂) was irrigated on each corn plant (Zea Mays). It was found that the PAW has shown a significant impact on seeds germination rate and improved seedling growth. The result obtained from this experiment suggested that crop yield could increase in a short duration. In the future, this experiment could open boundless opportunities in plasma agriculture to mobilize nitrogen because nitrite, nitrate, and ammonia are more suitable for plant uptake. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plasma-assisted%20nitrogen%20fixation" title="plasma-assisted nitrogen fixation">plasma-assisted nitrogen fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=nitrogen%20plasma" title=" nitrogen plasma"> nitrogen plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=UV%20excitation%20of%20water" title=" UV excitation of water"> UV excitation of water</a>, <a href="https://publications.waset.org/abstracts/search?q=ammonia%20synthesis" title=" ammonia synthesis"> ammonia synthesis</a> </p> <a href="https://publications.waset.org/abstracts/118194/plasma-assisted-nitrogen-fixation-for-the-elevation-of-seed-germination-and-plant-growth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118194.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">138</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4686</span> An Investigation of the Effects of Word Length on Amblyopic Eye Movement during Reading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yahya%20Maeni">Yahya Maeni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is well established that amblyopic patients have a reduced reading performance and oculomotor deficits. Word length has a significant impact on reading performance and eye movement behaviour during reading. As there no previous attempts to assess whether amblyopic eyes would be affected by word length while reading. This study aims to assess the effect of word length on amblyopic eye movement behaviour during reading including fixation duration, number of fixation and gaze duration. 21 adults with amblyopia and 21 age-matched controls participated in the study (age ± SD) (23.80 ± 4.66) for amblyopes and (24.20 ± 3.58) for Controls. Eye movement was recorded during reading binocularly using Eyelink 1000. Study was designed as 2 x 2 (amblyopia vs. control) x 2 lengths (4 letters, and 8 letters). Compared to controls, the amblyopic participants report significant longer duration of fixation, higher number of fixation and longer gaze duration for short words with far higher significant difference for long words. It could be concluded that eye movement in amblyopia during reading might be accounted for by the length of a word within a text and this could possible explanation of reduced reading performance among amblyopes. By understanding the effect of word length on amblyopia will shed light on reading deficits in amblyopia and help to determine the reading needs of amplyopes in educational and clinical settings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amblyopia" title="amblyopia">amblyopia</a>, <a href="https://publications.waset.org/abstracts/search?q=eye%20movement" title=" eye movement"> eye movement</a>, <a href="https://publications.waset.org/abstracts/search?q=reading" title=" reading"> reading</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation" title=" fixation"> fixation</a> </p> <a href="https://publications.waset.org/abstracts/124031/an-investigation-of-the-effects-of-word-length-on-amblyopic-eye-movement-during-reading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124031.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">150</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">4685</span> Isolation of Three Bioactive Phenantroindolizidine Alkaloids from the Fruit Latex of Ficus botryocarpa Miq.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jayson%20Wau">Jayson Wau</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Timi"> David Timi</a>, <a href="https://publications.waset.org/abstracts/search?q=Anthony%20Harakuwe"> Anthony Harakuwe</a>, <a href="https://publications.waset.org/abstracts/search?q=Bruce%20Bowden"> Bruce Bowden</a>, <a href="https://publications.waset.org/abstracts/search?q=Cherie%20Motti"> Cherie Motti</a>, <a href="https://publications.waset.org/abstracts/search?q=Harry%20Sakulas"> Harry Sakulas</a>, <a href="https://publications.waset.org/abstracts/search?q=Rag%20Gubag-Sipou"> Rag Gubag-Sipou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The latex of F. botryocarpa fruit is applied on sores, wounds and other skin infections in Papua New Guinea ethnotherapeutic practices. Systematic bioassay guided separation and isolation of subsequent fractions of latex extracts resulted in three bioactive fractions active against Staphylococcus aureus and Escherichia coli. This study reports structural elucidation of the three isolates. Structures were determined by physical (M.pt and Rf values) and spectroscopic (1D-1H NMR, 2D-HSQC NMR, 2D-HMBC NMR) and MS ESI-POS. The two methylene protons (2H-1) and (2H-3) resonate as triplets at δ 3.59 and δ 4.99 respectively. Electron dense δ 4.99 (2H-3) on (C-3) depicts the strong electron-withdrawing component, quaternary nitrogen (=N= +). Protons resonating at δ 3.88 and 3.89 are singlets depicting two methoxy groups. Both δ 3.88 and δ 3.89 are para-aryls substituents. The methines δ 9.13 and 8.60 are singlets depicting two lone protons on the indolizidinium aryl component. All isolates, (1), (2) and (3) were identified to be ficuseptine by comparing 1D-NMR assignments. 2D-NMR and MS of (2) found it to be ficuseptine chloride '2, 3-dihydro-6, 8-bis (4-methoxyphenyl)-, 1H-indolizinium chloride'. Their counter ions of the ficuseptines were not established and provide promising lead for the further investigation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ficus%20botryocarpa" title="Ficus botryocarpa">Ficus botryocarpa</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title=" antimicrobial activity"> antimicrobial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=ficuseptine" title=" ficuseptine"> ficuseptine</a>, <a href="https://publications.waset.org/abstracts/search?q=sores" title=" sores"> sores</a> </p> <a href="https://publications.waset.org/abstracts/34445/isolation-of-three-bioactive-phenantroindolizidine-alkaloids-from-the-fruit-latex-of-ficus-botryocarpa-miq" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34445.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">520</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">4684</span> Design of a Lumbar Interspinous Process Fixation Device for Minimizing Soft Tissue Removal and Operation Time</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Minhyuk%20Heo">Minhyuk Heo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jihwan%20Yun"> Jihwan Yun</a>, <a href="https://publications.waset.org/abstracts/search?q=Seonghun%20Park"> Seonghun Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It has been reported that intervertebral fusion surgery, which removes most of the ligaments and muscles of the spine, increases the degenerative disease in adjacent spinal segments. Therefore, it is required to develop a lumbar interspinous process fixation device that minimizes the risks and side effects from the surgery. The objective of the current study is to design an interspinous process fixation device with simple structures in order to minimize soft tissue removal and operation time during intervertebral fusion surgery. For the design concepts of a lumbar fixation device, the principle of the ratchet was first applied on the joining parts of the device in order to shorten the operation time. The coil spring structure was selected for connecting parts between the spinous processes so that a normal range of motion in spinal segments is preserved and degenerative spinal diseases are not developed in the adjacent spinal segments. The stiffness of the spring was determined not to interrupt the motion of a lumbar spine. The designed value of the spring stiffness allows the upper part of the spring to move ~10° which is higher than the range of flexion and extension for normal lumbar spine (6°-8°), when a moment of 10Nm is applied on the upper face of L1. A finite element (FE) model composed of L1 to L5 lumbar spines was generated to verify the mechanical integrity and the dynamic stability of the designed lumbar fixation device and to further optimize the lumbar fixation device. The FE model generated above produced the same pressure value on intervertebral disc and dynamic behavior as the normal intact model reported in the literature. The consistent results from this comparison validates the accuracy in the modeling of the current FE model. Currently, we are trying to generate an abnormal model with defects in one or more components of the normal FE model above. Then, the mechanical integrity and the dynamic stability of the designed lumbar fixation device will be analyzed after being installed in the abnormal model and then the lumbar fixation device will be further optimized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lumbar%20interspinous%20process%20fixation%20device" title="lumbar interspinous process fixation device">lumbar interspinous process fixation device</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20method" title=" finite element method"> finite element method</a>, <a href="https://publications.waset.org/abstracts/search?q=lumbar%20spine" title=" lumbar spine"> lumbar spine</a>, <a href="https://publications.waset.org/abstracts/search?q=kinematics" title=" kinematics"> kinematics</a> </p> <a href="https://publications.waset.org/abstracts/60372/design-of-a-lumbar-interspinous-process-fixation-device-for-minimizing-soft-tissue-removal-and-operation-time" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60372.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">228</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">4683</span> The Effect of Salinity on Symbiotic Nitrogen Fixation in Alfalfa and Faba Bean</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mouffok%20Ahlem">Mouffok Ahlem</a>, <a href="https://publications.waset.org/abstracts/search?q=Belhamra%20Mohamed"> Belhamra Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouffok%20Sihem"> Mouffok Sihem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of nitrogen fertilizers inevitable consequence, the increase in the nitrate content of water, which may contribute to the production of nitrite and the formation of carcinogenic nitrosamines. The nitrogen fertilizer may also affect the structure and function of the microbial community. And the fight against eutrophication of aquatic environments represents a cost to the student statements. The agronomic, ecological and economic legumes such as faba beans and alfalfa are not demonstrated, especially in the case of semi-arid and arid areas. Osmotic stress due to drought and / or salinity deficit, nutritional deficiencies is the major factors limiting symbiotic nitrogen fixation and productivity of pulses. To study the symbiotic nitrogen fixation in faba bean (Vicia faba L.) and alfalfa (Medicago sativa L.) in the region of Biskra, we used soil samples collected from 30 locations. This work has identified several issues of ecological and agronomic interest. Evaluation of symbiotic potential of soils in the region of Biskra; by trapping technique, show different levels of susceptibility to rhizobial microflora. The effectiveness of the rhizobial symbiosis in both legumes indicates that air dry biomass and the amount of nitrogen accumulated in the aerial part, depends mainly on the rate of nodulation and regardless of the species and locality. The correlation between symbiotic nitrogen fixation and some physico-chemical properties of soils shows that symbiotic nitrogen fixation in both legumes is strongly related to soil conditions of the soil. Salinity disrupts the physiological process of growth, development and more particularly that of the symbiotic fixation of atmospheric nitrogen. Against by phosphorus promotes rhizobial symbiosis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rhizobia" title="rhizobia">rhizobia</a>, <a href="https://publications.waset.org/abstracts/search?q=faba%20bean" title=" faba bean"> faba bean</a>, <a href="https://publications.waset.org/abstracts/search?q=alfalfa" title=" alfalfa"> alfalfa</a>, <a href="https://publications.waset.org/abstracts/search?q=salinity" title=" salinity"> salinity</a> </p> <a href="https://publications.waset.org/abstracts/16934/the-effect-of-salinity-on-symbiotic-nitrogen-fixation-in-alfalfa-and-faba-bean" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16934.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">460</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">4682</span> Mathematical Modeling of the Fouling Phenomenon in Ultrafiltration of Latex Effluent</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amira%20Abdelrasoul">Amira Abdelrasoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Huu%20Doan"> Huu Doan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Lohi"> Ali Lohi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An efficient and well-planned ultrafiltration process is becoming a necessity for monetary returns in the industrial settings. The aim of the present study was to develop a mathematical model for an accurate prediction of ultrafiltration membrane fouling of latex effluent applied to homogeneous and heterogeneous membranes with uniform and non-uniform pore sizes, respectively. The models were also developed for an accurate prediction of power consumption that can handle the large-scale purposes. The model incorporated the fouling attachments as well as chemical and physical factors in membrane fouling for accurate prediction and scale-up application. Both Polycarbonate and Polysulfone flat membranes, with pore sizes of 0.05 µm and a molecular weight cut-off of 60,000, respectively, were used under a constant feed flow rate and a cross-flow mode in ultrafiltration of the simulated paint effluent. Furthermore, hydrophilic ultrafilic and hydrophobic PVDF membranes with MWCO of 100,000 were used to test the reliability of the models. Monodisperse particles of 50 nm and 100 nm in diameter, and a latex effluent with a wide range of particle size distributions were utilized to validate the models. The aggregation and the sphericity of the particles indicated a significant effect on membrane fouling. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=membrane%20fouling" title="membrane fouling">membrane fouling</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20modeling" title=" mathematical modeling"> mathematical modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20consumption" title=" power consumption"> power consumption</a>, <a href="https://publications.waset.org/abstracts/search?q=attachments" title=" attachments"> attachments</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrafiltration" title=" ultrafiltration"> ultrafiltration</a> </p> <a href="https://publications.waset.org/abstracts/16539/mathematical-modeling-of-the-fouling-phenomenon-in-ultrafiltration-of-latex-effluent" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16539.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">470</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4681</span> Co-Limitation of Iron Deficiency in Stem Allantoin and Amino-N Formation of Peanut Plants Intercropped with Cassava</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hong%20Li">Hong Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Tingxian%20Li"> Tingxian Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Xudong%20Wang"> Xudong Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Weibo%20Yang"> Weibo Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Co-limitation of iron (Fe) deficiency in legume nitrogen fixation process is not well understood. Our objectives were to examine how peanut plants cope with Fe deficiency with the rhizobial inoculants and N-nutrient treatments. The study was conducted in the tropical Hainan Island during 2012-2013. The soil was strongly acidic (pH 4.6±0.7) and deficient in Fe (9.2±2.3 mg/kg). Peanut plants were intercropped with cassava. The inoculants and N treatments were arranged in a split-plot design with three blocks. Peanut root nodulation, stem allantoin, amino acids and plant N derived from fixation (P) reduced with declining soil Fe concentrations. The treatment interactions were significant on relative ureide % and peanut yields (P<0.05). Residual fixed N from peanut plants was beneficial to cassava plants. It was concluded that co-variance of Fe deficiency could influence peanut N fixation efficiency and rhizobia and N inputs could help improving peanut tolerance to Fe deficiency stress. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amino%20acids" title="amino acids">amino acids</a>, <a href="https://publications.waset.org/abstracts/search?q=plant%20N%20derived%20from%20N%20fixation" title=" plant N derived from N fixation"> plant N derived from N fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=root%20nodulation" title=" root nodulation"> root nodulation</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20Fe%20co-variance" title=" soil Fe co-variance"> soil Fe co-variance</a>, <a href="https://publications.waset.org/abstracts/search?q=stem%20ureide" title=" stem ureide"> stem ureide</a>, <a href="https://publications.waset.org/abstracts/search?q=peanuts" title=" peanuts"> peanuts</a>, <a href="https://publications.waset.org/abstracts/search?q=cassava" title=" cassava"> cassava</a> </p> <a href="https://publications.waset.org/abstracts/10291/co-limitation-of-iron-deficiency-in-stem-allantoin-and-amino-n-formation-of-peanut-plants-intercropped-with-cassava" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10291.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">294</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">4680</span> Comparison between the Performances of Different Boring Bars in the Internal Turning of Long Overhangs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wallyson%20Thomas">Wallyson Thomas</a>, <a href="https://publications.waset.org/abstracts/search?q=Zsombor%20Fulop"> Zsombor Fulop</a>, <a href="https://publications.waset.org/abstracts/search?q=Attila%20%20Szilagyi"> Attila Szilagyi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Impact dampers are mainly used in the metal-mechanical industry in operations that generate too much vibration in the machining system. Internal turning processes become unstable during the machining of deep holes, in which the tool holder is used with long overhangs (high length-to-diameter ratios). The devices coupled with active dampers, are expensive and require the use of advanced electronics. On the other hand, passive impact dampers (PID – Particle Impact Dampers) are cheaper alternatives that are easier to adapt to the machine’s fixation system, once that, in this last case, a cavity filled with particles is simply added to the structure of the tool holder. The cavity dimensions and the diameter of the spheres are pre-determined. Thus, when passive dampers are employed during the machining process, the vibration is transferred from the tip of the tool to the structure of the boring bar, where it is absorbed by the fixation system. This work proposes to compare the behaviors of a conventional solid boring bar and a boring bar with a passive impact damper in turning while using the highest possible L/D (length-to-diameter ratio) of the tool and an Easy Fix fixation system (also called: Split Bushing Holding System). It is also intended to optimize the impact absorption parameters, as the filling percentage of the cavity and the diameter of the spheres. The test specimens were made of hardened material and machined in a Computer Numerical Control (CNC) lathe. The laboratory tests showed that when the cavity of the boring bar is totally filled with minimally spaced spheres of the largest diameter, the gain in absorption allowed of obtaining, with an L/D equal to 6, the same surface roughness obtained when using the solid boring bar with an L/D equal to 3.4. The use of the passive particle impact damper resulted in, therefore, increased static stiffness and reduced deflexion of the tool. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20damper" title="active damper">active damper</a>, <a href="https://publications.waset.org/abstracts/search?q=fixation%20system" title=" fixation system"> fixation system</a>, <a href="https://publications.waset.org/abstracts/search?q=hardened%20material" title=" hardened material"> hardened material</a>, <a href="https://publications.waset.org/abstracts/search?q=passive%20damper" title=" passive damper "> passive damper </a> </p> <a href="https://publications.waset.org/abstracts/124361/comparison-between-the-performances-of-different-boring-bars-in-the-internal-turning-of-long-overhangs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124361.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">4679</span> Evaluation of Nitrogen Fixation Capabilities of Selected Pea Lines Grown under Different Environmental Conditions in Canadian Prairie</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chao%20Yang">Chao Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Rosalind%20Bueckert"> Rosalind Bueckert</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeff%20Schoenau"> Jeff Schoenau</a>, <a href="https://publications.waset.org/abstracts/search?q=Axel%20Diederichsen"> Axel Diederichsen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20Zakeri"> Hossein Zakeri</a>, <a href="https://publications.waset.org/abstracts/search?q=Tom%20Warkentin"> Tom Warkentin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pea is a very popular pulse crop that widely grew in Western Canadian prairie. However, the N fixation capabilities of these pea lines were not well evaluated under local environmental conditions. In this study, 2 supernodulating mutants Frisson P64 Sym29, Frisson P88 Sym28 along with their wild parent Frisson, 1 hypernodulating mutant Rondo-nod3 (fix+) along with its wild parent Rondo, 1 non-nodulating mutant Frisson P56 (nod-) and 2 commercial pea cultivar CDC Meadow and CDC Dakota which are widely planted in Western Canada were selected in order to evaluate the capabilities of their BNF, biomass, and yield production in symbiosis with R. leguminosarumbv. viciae, Our results showed different environmental conditions and variation of pea lines could both significantly impact days to flowering (DTF), days to podding (DTP), biomass and yield of tested pea lines (P < 0.0001), suggesting consideration of environmental factors could be important when selecting pea cultivar for local farming under different soil zones in Western Canada. Significant interaction effects between environmental conditions and pea lines were found on pea N fixation as well (P = 0.001), suggesting changes in N fixation capability of the same pea cultivar when grown under different environmental conditions. Our results provide useful information for farming and better opportunity for selection of pea cultivars with higher N-fixing capacity during breeding programs in Western Canada. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Canadian%20prairie" title="Canadian prairie">Canadian prairie</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20condition" title=" environmental condition"> environmental condition</a>, <a href="https://publications.waset.org/abstracts/search?q=N%20fixation" title=" N fixation"> N fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=pea%20cultivar" title=" pea cultivar"> pea cultivar</a> </p> <a href="https://publications.waset.org/abstracts/48483/evaluation-of-nitrogen-fixation-capabilities-of-selected-pea-lines-grown-under-different-environmental-conditions-in-canadian-prairie" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48483.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">343</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">4678</span> Fatigue Test and Stress-Life Analysis of Nanocomposite-Based Bone Fixation Device</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jisoo%20Kim">Jisoo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Min%20Su%20Lee"> Min Su Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunmook%20Lee"> Sunmook Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Durability assessment of nanocomposite-based bone fixation device was performed by flexural fatigue tests, for which the changes in the life cycles of nanocomposite samples synthesized by blending bioabsorbable polymer (PLGA) and ceramic nanoparticles (β-TCP) with different ratios were monitored. The nanocomposite samples were kept in a constant temperature/humidity chamber at 37°C/50%RH for varied incubation periods for the degradation of nanocomposite samples under the temperature/humidity stress. It was found that the life cycles were increasing as the incubation time in the chamber were increasing in the initial stage irrespective of sample compositions, which was due to the annealing effect of the polymer. However, the life cycle was getting shorter as the incubation time increased afterward, which was due to the overall degradation of nanocomposites. It was found that the life cycle of the nanocomposite sample with high ceramic content was shorter than the one with low ceramic content, which was attributed to the increased brittleness of the composite with high ceramic content. The changes in chemical properties were also monitored by FT-IR, which indicated that the degradation of the biodegradable polymer could be confirmed by the increased intensities of carboxyl groups and hydroxyl groups since the hydrolysis of ester bonds connecting two successive monomers yielded carboxyl end groups and hydroxyl groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioabsorbable%20polymer" title="bioabsorbable polymer">bioabsorbable polymer</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20fixation%20device" title=" bone fixation device"> bone fixation device</a>, <a href="https://publications.waset.org/abstracts/search?q=ceramic%20nanoparticles" title=" ceramic nanoparticles"> ceramic nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=durability%20assessment" title=" durability assessment"> durability assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue%20test" title=" fatigue test"> fatigue test</a> </p> <a href="https://publications.waset.org/abstracts/64677/fatigue-test-and-stress-life-analysis-of-nanocomposite-based-bone-fixation-device" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/64677.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">4677</span> Assessment of the Biological Nitrogen Fixation in Soybean Sown in Different Types of Moroccan Soils</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20Z.%20Aliyat">F. Z. Aliyat</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Ben%20Messaoud"> B. Ben Messaoud</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Nassiri"> L. Nassiri</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Bouiamrine"> E. Bouiamrine</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Ibijbijen"> J. Ibijbijen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study aims to assess the biological nitrogen fixation in the soybean tested in different Moroccan soils combined with the rhizobial inoculation. These effects were evaluated by the plant growth mainly by the aerial biomass production, total nitrogen content and the proportion of the nitrogen fixed. This assessment clearly shows that the inoculation with bacteria increases the growth of soybean. Five different soils and a control (peat) were used. The rhizobial inoculation was performed by applying the peat that contained a mixture of 2 strains <em>Sinorhizobium</em> <em>fredii</em> HH103 and <em>Bradyrhizobium</em>. The biomass, the total nitrogen content and the proportion of nitrogen fixed were evaluated under different treatments. The essay was realized at the greenhouse the Faculty of Sciences, Moulay Ismail University. The soybean has shown a great response for the parameters assessed. Moreover, the best response was reported by the inoculated plants compared to non- inoculated and to the absolute control. Finally, good production and the best biological nitrogen fixation present an important ecological technology to improve the sustainable production of soybean and to ensure the increase of the fertility of soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biological%20nitrogen%20fixation" title="biological nitrogen fixation">biological nitrogen fixation</a>, <a href="https://publications.waset.org/abstracts/search?q=inoculation" title=" inoculation"> inoculation</a>, <a href="https://publications.waset.org/abstracts/search?q=rhizobium" title=" rhizobium"> rhizobium</a>, <a href="https://publications.waset.org/abstracts/search?q=soybean" title=" soybean"> soybean</a> </p> <a href="https://publications.waset.org/abstracts/97585/assessment-of-the-biological-nitrogen-fixation-in-soybean-sown-in-different-types-of-moroccan-soils" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97585.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">173</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=latex%20fixation%20tests&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=latex%20fixation%20tests&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=latex%20fixation%20tests&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=latex%20fixation%20tests&page=5">5</a></li> <li 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