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exposed</title> <meta name="description" content="Search results for: exposed"> <meta name="keywords" content="exposed"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" 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class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="exposed"> <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> 1754</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: exposed</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1754</span> The Effect of Extremely Low Frequency Magnetic Field on Rats Brain</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omar%20Abdalla">Omar Abdalla</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelfatah%20Ahmed"> Abdelfatah Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Mustafa"> Ahmed Mustafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelazem%20Eldouma"> Abdelazem Eldouma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study is evaluating the effect of extremely low frequency magnetic field on Waster rats brain. The number of rats used in this study were 25, which were divided into five groups, each group containing five rats as follows: Group 1: The control group which was not exposed to energized field; Group 2: Rats were exposed to a magnetic field with an intensity of 0.6 mT (2 hours/day); Group 3: Rats were exposed to a magnetic field of 1.2 mT (2 hours/day); Group4: Rats were exposed to a magnetic field of 1.8 mT (2 hours/day); Group 5: Rats were exposed to a magnetic field of 2.4 mT (2 hours/day) and all groups were exposed for seven days, by designing a maze and calculating the time average for arriving to the decoy at special conditions. We found the time average before exposure for the all groups was G2=330 s, G3=172 s, G4=500 s and G5=174 s, respectively. We exposed all groups to ELF-MF and measured the time and we found: G2=465 s, G3=388 s, G4=501 s, and G5=442 s. It was observed that the time average increased directly with field strength. Histological samples of frontal lop of brain for all groups were taken and we found lesion, atrophy, empty vacuoles and disorder choroid plexus at frontal lope of brain. And finally we observed the disorder of choroid plexus in histological results and Alzheimer's symptoms increase when the magnetic field increases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nonionizing%20radiation" title="nonionizing radiation">nonionizing radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=biophysics" title=" biophysics"> biophysics</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20field" title=" magnetic field"> magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=shrinkage" title=" shrinkage"> shrinkage</a> </p> <a href="https://publications.waset.org/abstracts/6126/the-effect-of-extremely-low-frequency-magnetic-field-on-rats-brain" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6126.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">545</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">1753</span> Changes in Serum Neopterin in Workers Exposed to Different Mineral Dust</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gospodinka%20Prakova">Gospodinka Prakova</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavlina%20Gidikova"> Pavlina Gidikova</a>, <a href="https://publications.waset.org/abstracts/search?q=Gergana%20Sandeva"> Gergana Sandeva</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamelia%20Haracherova"> Kamelia Haracherova</a>, <a href="https://publications.waset.org/abstracts/search?q=Emil%20Slavov"> Emil Slavov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Neopterin was demonstrated to be a sensitive marker of cell-mediated immune reactions which plays a key role in the interaction of monocyte / macrophage activation. The purpose of this work was to investigate changes in serum neopterin in workers exposed to different composition of mineral dust. Material and Methods: Serum neopterin was studied in 193 exposed workers, divided into three groups, depending on the mineral dust and content of the quartz in the respirable fraction. The I-st group-coal dust containing less than 2% free crystalline silica (n=44), II-nd group-coal dust containing over 2% free crystalline silica (n=94) and the III-rd group-mixed dust with corundum and carborundum (n=55). The control group was composed of 21 individuals without exposure to dust. Serum neopterin was investigated by Elisa method in ng/ml according to the instructions of the manufacturer. Results and Discussion: It was found significantly higher level of serum neopterin in exposed workers of mineral dust (2,10 ± 0,62 ng / ml), compared with that of the control group (1,10 ± 0,85 ng/ml; p < 0,05). Neopterin levels in workers exposed to coal dust (1,87 ± 0,42 ng / ml-I-st and 3,32 ± 0,77 ng / ml-II-nd group) were significantly higher compared with those exposed to a mixed dust (1,31±0,68 mg / ml-third) and control group (p < 0,05). No significant difference in serum neopterin when exposed to a mixed dust composed of corundum and carborundum (III-rd) and a control group. Conclusion: The results of this study indicate activates a cell-mediated immune response when exposed to a mineral dust. The level of that activation depends mainly on the composition of the dust and is significantly highest in workers exposed to coal dust. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mineral%20dust" title="mineral dust">mineral dust</a>, <a href="https://publications.waset.org/abstracts/search?q=neopterin" title=" neopterin"> neopterin</a>, <a href="https://publications.waset.org/abstracts/search?q=occupational%20exposure" title=" occupational exposure"> occupational exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=respirable%20crystalline%20silica" title=" respirable crystalline silica"> respirable crystalline silica</a> </p> <a href="https://publications.waset.org/abstracts/69706/changes-in-serum-neopterin-in-workers-exposed-to-different-mineral-dust" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69706.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">266</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">1752</span> Effect of Bull Exposure on Post-Partum Estrus Interval in Nili-Ravi Buffaloes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Saleem%20Akhtar">Muhammad Saleem Akhtar</a>, <a href="https://publications.waset.org/abstracts/search?q=Mushtaq%20Hussain%20Lashari"> Mushtaq Hussain Lashari</a>, <a href="https://publications.waset.org/abstracts/search?q=Ejaz%20Ahmad"> Ejaz Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanveer%20Ahmad"> Tanveer Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Laeeq%20Akbar%20Lodhi"> Laeeq Akbar Lodhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ijaz%20Ahmad"> Ijaz Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Masood%20Akhtar"> Masood Akhtar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this study was to determine the effect of bull exposure continuously or intermittently or its excretory products after calving on postpartum interval to estrus, in Nili-Ravi buffalo. Forty-eight buffaloes of Nili-Ravi breed were allocated one of the four treatments in a totally randomized plan using a 4 x 1 factorial design. The four treatment groups were BEC (Bull Exposed Continuously), BEI (Bull Exposed Intermittently), EPB (Excretory Products of Bull) and BNE (Bull Not Exposed). BEC; buffaloes (n = 12) were exposed continuously to the physical presence of a bull whereas in BEI; buffaloes (n = 12) were exposed intermittently to the physical presence of bull. EPB; buffaloes (n = 12) were exposed to discharge waste (urine and feces) of bull and BNE buffaloes (n = 12) were not exposed to a bull or discharge waste of bulls. Buffaloes were exposed on day 15 after parturition. Day 15 postpartum represented d 0 for each treatment. The postpartum interval from calving to first behavioural estrus was 66.88 days in BEC, 75.12 days in BEI, 77.28 days in EPB and 76.5 days in BNE treatments. Postpartum interval to first behavioural estrus was shorter in BEC than BEI, EPB, and BNE treatments. There was no significant difference in postpartum interval to estrus between BEI, EPB and BNE treatments. In present study, the percentage of buffaloes showing estrus during experimental period was 75.0%, 66.66%, 66.66% and 58.33% in BEC, BEI, EPB and BNE treatments, respectively. The mean serum progesterone concentration did not differ significantly between BEC and other (BEI, EPB, and BNE) treatments. It was concluded that presence of bull has positive effect in reducing calving interval in Nili Ravi buffalo. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calving%20interval" title="calving interval">calving interval</a>, <a href="https://publications.waset.org/abstracts/search?q=biostimulation" title=" biostimulation"> biostimulation</a>, <a href="https://publications.waset.org/abstracts/search?q=buffalo" title=" buffalo"> buffalo</a>, <a href="https://publications.waset.org/abstracts/search?q=bull%20exposure" title=" bull exposure"> bull exposure</a> </p> <a href="https://publications.waset.org/abstracts/100620/effect-of-bull-exposure-on-post-partum-estrus-interval-in-nili-ravi-buffaloes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100620.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">1751</span> Behaviour of Lightweight Expanded Clay Aggregate Concrete Exposed to High Temperatures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lenka%20Bodn%C3%A1rov%C3%A1">Lenka Bodnárová</a>, <a href="https://publications.waset.org/abstracts/search?q=Rudolf%20Hela"> Rudolf Hela</a>, <a href="https://publications.waset.org/abstracts/search?q=Michala%20Hubertov%C3%A1"> Michala Hubertová</a>, <a href="https://publications.waset.org/abstracts/search?q=Iveta%20Nov%C3%A1kov%C3%A1"> Iveta Nováková</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is concerning the issues of behaviour of lightweight expanded clay aggregates concrete exposed to high temperature. Lightweight aggregates from expanded clay are produced by firing of row material up to temperature 1050°C. Lightweight aggregates have suitable properties in terms of volume stability, when exposed to temperatures up to 1050°C, which could indicate their suitability for construction applications with higher risk of fire. The test samples were exposed to heat by using the standard temperature-time curve ISO 834. Negative changes in resulting mechanical properties, such as compressive strength, tensile strength, and flexural strength were evaluated. Also visual evaluation of the specimen was performed. On specimen exposed to excessive heat, an explosive spalling could be observed, due to evaporation of considerable amount of unbounded water from the inner structure of the concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=expanded%20clay%20aggregate" title="expanded clay aggregate">expanded clay aggregate</a>, <a href="https://publications.waset.org/abstracts/search?q=explosive%20spalling" title=" explosive spalling"> explosive spalling</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20temperature" title=" high temperature"> high temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=lightweight%20concrete" title=" lightweight concrete"> lightweight concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature-time%20curve%20ISO%20834" title=" temperature-time curve ISO 834"> temperature-time curve ISO 834</a> </p> <a href="https://publications.waset.org/abstracts/20176/behaviour-of-lightweight-expanded-clay-aggregate-concrete-exposed-to-high-temperatures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20176.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">447</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">1750</span> Age and Second Language Acquisition: A Case Study from Maldives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aaidha%20Hammad">Aaidha Hammad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The age a child to be exposed to a second language is a controversial issue in communities such as the Maldives where English is taught as a second language. It has been observed that different stakeholders have different viewpoints towards the issue. Some believe that the earlier children are exposed to a second language, the better they learn, while others disagree with the notion. Hence, this case study investigates whether children learn a second language better when they are exposed at an earlier age or not. The spoken and written data collected confirm that earlier exposure helps in mastering the sound pattern and speaking fluency with more native-like accent, while a later age is better for learning more abstract and concrete aspects such as grammar and syntactic rules. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=age" title="age">age</a>, <a href="https://publications.waset.org/abstracts/search?q=fluency" title=" fluency"> fluency</a>, <a href="https://publications.waset.org/abstracts/search?q=second%20language%20acquisition" title=" second language acquisition"> second language acquisition</a>, <a href="https://publications.waset.org/abstracts/search?q=development%20of%20language%20skills" title=" development of language skills"> development of language skills</a> </p> <a href="https://publications.waset.org/abstracts/51548/age-and-second-language-acquisition-a-case-study-from-maldives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51548.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">425</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">1749</span> Identification of Vulnerable Zone Due to Cyclone-Induced Storm Surge in the Exposed Coast of Bangladesh</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohiuddin%20Sakib">Mohiuddin Sakib</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatin%20Nihal"> Fatin Nihal</a>, <a href="https://publications.waset.org/abstracts/search?q=Rabeya%20Akter"> Rabeya Akter</a>, <a href="https://publications.waset.org/abstracts/search?q=Anisul%20Haque"> Anisul Haque</a>, <a href="https://publications.waset.org/abstracts/search?q=Munsur%20Rahman"> Munsur Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Wasif-E-Elahi"> Wasif-E-Elahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Surge generating cyclones are one of the deadliest natural disasters that threaten the life of coastal environment and communities worldwide. Due to the geographic location, ‘low lying alluvial plain, geomorphologic characteristics and 710 kilometers exposed coastline, Bangladesh is considered as one of the greatest vulnerable country for storm surge flooding. Bay of Bengal is possessing the highest potential of creating storm surge inundation to the coastal areas. Bangladesh is the most exposed country to tropical cyclone with an average of four cyclone striking every years. Frequent cyclone landfall made the country one of the worst sufferer within the world for cyclone induced storm surge flooding and casualties. During the years from 1797 to 2009 Bangladesh has been hit by 63 severe cyclones with strengths of different magnitudes. Though detailed studies were done focusing on the specific cyclone like Sidr or Aila, no study was conducted where vulnerable areas of exposed coast were identified based on the strength of cyclones. This study classifies the vulnerable areas of the exposed coast based on storm surge inundation depth and area due to cyclones of varying strengths. Classification of the exposed coast based on hazard induced cyclonic vulnerability will help the decision makers to take appropriate policies for reducing damage and loss. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyclone" title="cyclone">cyclone</a>, <a href="https://publications.waset.org/abstracts/search?q=landfall" title=" landfall"> landfall</a>, <a href="https://publications.waset.org/abstracts/search?q=storm%20surge" title=" storm surge"> storm surge</a>, <a href="https://publications.waset.org/abstracts/search?q=exposed%20coastline" title=" exposed coastline"> exposed coastline</a>, <a href="https://publications.waset.org/abstracts/search?q=vulnerability" title=" vulnerability"> vulnerability</a> </p> <a href="https://publications.waset.org/abstracts/37354/identification-of-vulnerable-zone-due-to-cyclone-induced-storm-surge-in-the-exposed-coast-of-bangladesh" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37354.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">399</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">1748</span> Thermal Resistance of Special Garments Exposed to a Radiant Heat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jana%20Pichova">Jana Pichova</a>, <a href="https://publications.waset.org/abstracts/search?q=Lubos%20Hes"> Lubos Hes</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Bajzik"> Vladimir Bajzik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Protective clothing is designed to keep a wearer save in hazardous conditions or enable perform short time working operation without being injured or feeling discomfort. Firefighters or other related workers are exposed to abnormal heat which can be conductive, convective or radiant type. Their garment is proposed to resist this conditions and prevent burn injuries or dead of human. However thermal comfort of firefighter exposed to high heat source have not been studied yet. Thermal resistance is the best representative parameter of thermal comfort. In this study a new method of testing of thermal resistance of special clothing exposed to high radiation heat source was designed. This method simulates human body wearing single or multi-layered garment which is exposed to radiative heat. Setup of this method enables measuring of radiative heat flow in time without effect of convection. The new testing method is verified on chosen group of textiles for firefighters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=protective%20clothing" title="protective clothing">protective clothing</a>, <a href="https://publications.waset.org/abstracts/search?q=radiative%20heat" title=" radiative heat"> radiative heat</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort%20of%20firefighters" title=" thermal comfort of firefighters"> thermal comfort of firefighters</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20resistance%20of%20special%20garments" title=" thermal resistance of special garments"> thermal resistance of special garments</a> </p> <a href="https://publications.waset.org/abstracts/31445/thermal-resistance-of-special-garments-exposed-to-a-radiant-heat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31445.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">379</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">1747</span> Industrial Assessment of the Exposed Rocks on Peris Anticline Kurdistan Region of Iraq for Cement Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Faroojan%20Khajeek%20Sisak%20Siakian">Faroojan Khajeek Sisak Siakian</a>, <a href="https://publications.waset.org/abstracts/search?q=Aayda%20Dikran%20Abdulahad"> Aayda Dikran Abdulahad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Peris Mountain is one of the main mountains in the Iraqi Kurdistan Region, it forms one of the long anticlines trending almost East – West. The exposed formations on the top of the mountain are Bekhme, and Shiranish, with carbonate rocks of different types and thicknesses. We selected the site for sampling to be relevant for a quarry taking into consideration the thickness of the exposed rocks, no overburden, favorable quarrying faces, hardness of the rocks, bedding nature, good extension of the outcrops, and a favorable place for construction of a cement plant. We sampled the exposed rocks on the top of the mountain where a road crosses the mountain, and a total of 15 samples were collected. The distance between sampling intervals was 5 m, and each sample was collected to represent the sampling interval. The samples were subjected to X-ray fluorescence spectroscopy (XRF) to indicate the main oxides percentages in each sample. The acquired results showed the studied rocks can be used in the cement industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=limestone" title="limestone">limestone</a>, <a href="https://publications.waset.org/abstracts/search?q=quarry" title=" quarry"> quarry</a>, <a href="https://publications.waset.org/abstracts/search?q=CaO" title=" CaO"> CaO</a>, <a href="https://publications.waset.org/abstracts/search?q=MgO" title=" MgO"> MgO</a>, <a href="https://publications.waset.org/abstracts/search?q=overburden" title=" overburden"> overburden</a> </p> <a href="https://publications.waset.org/abstracts/163693/industrial-assessment-of-the-exposed-rocks-on-peris-anticline-kurdistan-region-of-iraq-for-cement-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163693.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">89</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">1746</span> Characteristics of Ozone Generated from Dielectric Barrier Discharge Plasma Actuators</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Osada">R. Osada</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Ogata"> S. Ogata</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Segawa"> T. Segawa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dielectric barrier discharge plasma actuators (DBD-PAs) have been developed for active flow control devices. However, it is necessary to reduce ozone produced by DBD toward practical applications using DBD-PAs. In this study, variations of ozone concentration, flow velocity, power consumption were investigated by changing exposed electrodes of DBD-PAs. Two exposed electrode prototypes were prepared: span-type with exposed electrode width of 0.1 mm, and normal-type with width of 5 mm. It was found that span-type shows lower power consumption and higher flow velocity than that of normal-type at <em>V<sub>p-p</sub></em> = 4.0-6.0 kV. Ozone concentration of span-type higher than normal-type at <em>V<sub>p-p</sub></em> = 4.0-8.0 kV. In addition, it was confirmed that catalyst located in downstream from the exposed electrode can reduce ozone concentration between 18 and 42% without affecting the induced flow. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dielectric%20barrier%20discharge%20plasma%20actuators" title="dielectric barrier discharge plasma actuators">dielectric barrier discharge plasma actuators</a>, <a href="https://publications.waset.org/abstracts/search?q=ozone%20diffusion" title=" ozone diffusion"> ozone diffusion</a>, <a href="https://publications.waset.org/abstracts/search?q=PIV%20measurement" title=" PIV measurement"> PIV measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20consumption" title=" power consumption"> power consumption</a> </p> <a href="https://publications.waset.org/abstracts/56692/characteristics-of-ozone-generated-from-dielectric-barrier-discharge-plasma-actuators" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56692.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">241</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">1745</span> Optochemical and Electrochemical Method to Study of Vegetable Oil Deterioration </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Shelke">A. V. Shelke</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20S.%20More"> P. S. More</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research aimed to study the kinetic reaction of reused cooking oil and to find the optimum condition of its process. The feedstock was collected from the street sellers and also prepared at laboratory. From this research, it is found that the kinetic reaction of reused sunflower oil (auto-oxidation) is obtained in terms of variation of the absorption coefficient of unexposed sunflower oil as 0.05 which is very close to that of exposed sunflower oil 0.075. At room temperature, the optimum intensity obtained from optical absorption spectroscopy study is 0.267 for unexposed sunflower oil and 0.194 for exposed sunflower oil. However, results indicated that FTIR spectroscopy is accurate and precise enough for such determination. Free Fatty Acid (FFA% = 026), acid ~53% and safonication ~%192 get reduce in exposed oil was investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=friction" title="friction">friction</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=sunflower%20oil" title=" sunflower oil"> sunflower oil</a>, <a href="https://publications.waset.org/abstracts/search?q=vegetable%20oils" title=" vegetable oils"> vegetable oils</a> </p> <a href="https://publications.waset.org/abstracts/16089/optochemical-and-electrochemical-method-to-study-of-vegetable-oil-deterioration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16089.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">301</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">1744</span> Language Anxiety and Motivation as Predictors of English as a Foreign Language Achievement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fakieh%20Alrabai">Fakieh Alrabai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study examines the predictive power of foreign language anxiety and motivation, as two significant affective variables, in English as a foreign language (EFL) achievement. It also explores the causal relationship between these two factors (i.e. which variable causes the other); and which one of them best predicts other affective factors including learner attitude, self-esteem, and autonomy. The study utilized experimental treatments among 210 Saudi EFL learners divided into four groups. Group 1 was exposed to anxiety-controlling moments, group 2 was exposed to motivational moments, group 3 was exposed to anxiety-controlling and motivational moments together, and group 4 was exposed to no specific anxiety or motivation strategies. The influence of the treatment on the study variables was evaluated using a triangulation of measurements including questionnaires, classroom observations, and achievement tests. Descriptive analysis, ANOVA, ANCOVA, and regression analyses have been deployed to figure out the study findings. While both motivation and anxiety significantly predicted learners EFL achievement, motivation has been found to be the best predictor of learners’ achievement; and therefore, operates as the mediator of EFL achievement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=motivation" title="motivation">motivation</a>, <a href="https://publications.waset.org/abstracts/search?q=anxiety" title=" anxiety"> anxiety</a>, <a href="https://publications.waset.org/abstracts/search?q=achievement" title=" achievement"> achievement</a>, <a href="https://publications.waset.org/abstracts/search?q=autonomy" title=" autonomy"> autonomy</a> </p> <a href="https://publications.waset.org/abstracts/109618/language-anxiety-and-motivation-as-predictors-of-english-as-a-foreign-language-achievement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109618.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">128</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">1743</span> Impact of Paint Occupational Exposure on Reproductive Markers: A Case Study in North East Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amina%20Merghad">Amina Merghad</a>, <a href="https://publications.waset.org/abstracts/search?q=Cherif%20Abdennour"> Cherif Abdennour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Solvents are widely used in paint industry, where humans are highly exposed, especially from inhalation. A case report describes how paint affects reproductive markers and the health of workers. Sixty four subjects were chosen and divided into two groups; a control and an exposed group. A questionnaire was given to male workers from similar socio-economic status in order to know their ages, working conditions, clinical symptoms, working period, smoking history, shift, medical history and nutrition. Blood was withdrawn in the morning from volunteers. The measurement of blood testosterone and prolactin concentrations was then carried out. Results showed that the ages of the two groups were almost similar and were up to 47 and 43 years. The period of employment was 17 years and 14 years for the control and the exposed workers, respectively. Concerning clinical symptoms, the frequency of neuropsychological symptoms of the two groups are presented. It is clear that the symptom of memory loss, headaches are the highest among exposed workers followed by poor coordination, poor concentration and insomnia. On the other hand, the symptoms’ frequency in the control was less than that of the exposed group. Testosterone concentration has significantly decreased in group 2 (4.61±2,005 ng/ml) and group 3 (4.25±1.67 ng/ml) of exposed workers. On the other hand, prolactin concentration was higher in group 3 compared to other groups. To conclude, paint industry has disturbed reproductive markers and created high frequency of neuropsychological symptoms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blood" title="blood">blood</a>, <a href="https://publications.waset.org/abstracts/search?q=paint" title=" paint"> paint</a>, <a href="https://publications.waset.org/abstracts/search?q=prolactin" title=" prolactin"> prolactin</a>, <a href="https://publications.waset.org/abstracts/search?q=occupational%20exposure" title=" occupational exposure"> occupational exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20solvent" title=" organic solvent"> organic solvent</a>, <a href="https://publications.waset.org/abstracts/search?q=reproductive%20toxicity" title=" reproductive toxicity"> reproductive toxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=testosterone" title=" testosterone"> testosterone</a> </p> <a href="https://publications.waset.org/abstracts/25748/impact-of-paint-occupational-exposure-on-reproductive-markers-a-case-study-in-north-east-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25748.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1742</span> Absence of Malignancy in Oral Epithelial Cells from Individuals Occupationally Exposed to Organic Solvents Working in the Shoe Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Gonz%C3%A1lez-Yebra">B. González-Yebra</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Flores-Nieto"> B. Flores-Nieto</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Aguilar-Salinas"> P. Aguilar-Salinas</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Preciado%20Puga"> M. Preciado Puga</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20L.%20Gonz%C3%A1lez%20Yebra"> A. L. González Yebra </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monitoring of populations occupationally exposed to organic solvents has been an important issue for several shoe factories for years since the International Agency for Research on Cancer (IARC) has advised on the potential carcinogenic risk of chemicals related to occupations. In order to detect if exposition to organic solvents used in some Mexican shoe factories contributes to oral carcinogenesis, we performed monitoring in three factories. Occupational exposure was determined by using monitors 3M. Organic solvents were assessed by gas chromatography. Then, we recruited 30 shoe workers (30.2 ± 8.4 years) and 10 unexposed subjects (43.3 ± 11.2 years) for the micronuclei (MN) test and immunodetection of some cancer biomarkers (ki-67, p16, caspase-3) in scraped oral epithelial cells. Monitored solvents detected were acetone, benzene, hexane, methyl ethyl ketone, and toluene in acceptable levels according to Official Mexican Norm. We found by MN test higher incidence of nuclear abnormalities (karyorrhexis, pycnosis, karyolysis, condensed chromatin, and macronuclei) in the exposed group than the non-exposed group. On the other hand, we found, a negative expression for Ki-67 and p16 in exfoliated epithelial cells from exposed and non-exposed to organic solvents subjects. Only caspase-3 shown positive patter of expression in 9/30 (30%) exposed subjects, and we detected high karyolysis incidence in caspase-3 subjects (p = 0.021). The absence of expression of proliferation markers p16 and ki-67 and presence of apoptosis marker caspase-3 are indicating the absence of malignancy in oral epithelial cells and low risk for oral cancer. It is a fact that the MN test is a very effective method to detect nuclear abnormalities in exfoliated buccal cells from subjects that have been exposed to organic solvents in the shoe industry. However, in order to improve this tool and predict cancer risk is it is mandatory to implement complementary tests as other biomarkers that can help to detect malignancy in individuals occupationally exposed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomarkers" title="biomarkers">biomarkers</a>, <a href="https://publications.waset.org/abstracts/search?q=oral%20cancer" title=" oral cancer"> oral cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20solvents" title=" organic solvents"> organic solvents</a>, <a href="https://publications.waset.org/abstracts/search?q=shoe%20industries" title=" shoe industries"> shoe industries</a> </p> <a href="https://publications.waset.org/abstracts/110541/absence-of-malignancy-in-oral-epithelial-cells-from-individuals-occupationally-exposed-to-organic-solvents-working-in-the-shoe-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/110541.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">136</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">1741</span> Exposure to Violence and Its Association with Mental Health in Swedish Prospective Exchange Students and Campus Students</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Emil%20Danehorn">Emil Danehorn</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulla%20Peterson"> Ulla Peterson</a>, <a href="https://publications.waset.org/abstracts/search?q=Marie%20Oscarsson"> Marie Oscarsson</a>, <a href="https://publications.waset.org/abstracts/search?q=Goldina%20Smirthwaite"> Goldina Smirthwaite</a>, <a href="https://publications.waset.org/abstracts/search?q=Katarina%20Swahnberg"> Katarina Swahnberg</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Swedish students who choose to study abroad are common, but there has been limited research on exchange students. There are indications that some Swedish exchange students have been exposed to violence, but it is not known if they, already before their semester abroad, are more exposed to violence than students who remain on campus. Our aim was to investigate potential differences in exposure to physical, sexual, and emotional violence between prospective exchange students and campus students and between male and female students in general, as well as to determine any associations between mental health and exposure to violence among students in the total sample. Method: Comparative cross-sectional design using an online survey containing the NorVold Abuse Questionnaire and the General Health Questionnaire 12. A total of 565 participants took part in the study. Results: Prospective exchange students were less exposed to emotional violence compared to campus students. About one-half of all the participating female students had been exposed to sexual violence and about one-third of all the male students had been exposed to physical violence. The results also indicated that exposure to more than one form of violence was associated with poor mental health for students as a group. Conclusion: Prospective exchange students as a group do not report more exposure to physical and sexual violence than campus students but do report less exposure to emotional violence. However, the overall frequency of exposure to violence among the students was high. This highlights the need for proactive efforts for everyone, not least for exchange students who will be staying in a new environment unknown to them. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sexual%20violence" title="sexual violence">sexual violence</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20violence" title=" physical violence"> physical violence</a>, <a href="https://publications.waset.org/abstracts/search?q=emotional%20violence" title=" emotional violence"> emotional violence</a>, <a href="https://publications.waset.org/abstracts/search?q=exchange%20students" title=" exchange students"> exchange students</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20health" title=" mental health"> mental health</a> </p> <a href="https://publications.waset.org/abstracts/150265/exposure-to-violence-and-its-association-with-mental-health-in-swedish-prospective-exchange-students-and-campus-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150265.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">123</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">1740</span> DNA Damage and Apoptosis Induced in Drosophila melanogaster Exposed to Different Duration of 2400 MHz Radio Frequency-Electromagnetic Fields Radiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neha%20Singh">Neha Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Anuj%20Ranjan"> Anuj Ranjan</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanu%20Jindal"> Tanu Jindal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the last decade, the exponential growth of mobile communication has been accompanied by a parallel increase in density of electromagnetic fields (EMF). The continued expansion of mobile phone usage raises important questions as EMF, especially radio frequency (RF), have long been suspected of having biological effects. In the present experiments, we studied the effects of RF-EMF on cell death (apoptosis) and DNA damage of a well- tested biological model, Drosophila melanogaster exposed to 2400 MHz frequency for different time duration i.e. 2 hrs, 4 hrs, 6 hrs,8 hrs, 10 hrs, and 12 hrs each day for five continuous days in ambient temperature and humidity conditions inside an exposure chamber. The flies were grouped into control, sham-exposed, and exposed with 100 flies in each group. In this study, well-known techniques like Comet Assay and TUNEL (Terminal deoxynucleotide transferase dUTP Nick End Labeling) Assay were used to detect DNA damage and for apoptosis studies, respectively. Experiments results showed DNA damage in the brain cells of Drosophila which increases as the duration of exposure increases when observed under the observed when we compared results of control, sham-exposed, and exposed group which indicates that EMF radiation-induced stress in the organism that leads to DNA damage and cell death. The process of apoptosis and mutation follows similar pathway for all eukaryotic cells; therefore, studying apoptosis and genotoxicity in Drosophila makes similar relevance for human beings as well. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cell%20death" title="cell death">cell death</a>, <a href="https://publications.waset.org/abstracts/search?q=apoptosis" title=" apoptosis"> apoptosis</a>, <a href="https://publications.waset.org/abstracts/search?q=Comet%20Assay" title=" Comet Assay"> Comet Assay</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%20damage" title=" DNA damage"> DNA damage</a>, <a href="https://publications.waset.org/abstracts/search?q=Drosophila" title=" Drosophila"> Drosophila</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20fields" title=" electromagnetic fields"> electromagnetic fields</a>, <a href="https://publications.waset.org/abstracts/search?q=EMF" title=" EMF"> EMF</a>, <a href="https://publications.waset.org/abstracts/search?q=radio%20frequency" title=" radio frequency"> radio frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=RF" title=" RF"> RF</a>, <a href="https://publications.waset.org/abstracts/search?q=TUNEL%20assay" title=" TUNEL assay"> TUNEL assay</a> </p> <a href="https://publications.waset.org/abstracts/92485/dna-damage-and-apoptosis-induced-in-drosophila-melanogaster-exposed-to-different-duration-of-2400-mhz-radio-frequency-electromagnetic-fields-radiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92485.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">169</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">1739</span> The Metaproteomic Analysis of HIV Uninfected Exposed Infants’ Gut Microbiome to Help Understand Their Poor Health Statuses in An African Cohort</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tara%20Miller">Tara Miller</a>, <a href="https://publications.waset.org/abstracts/search?q=Tariq%20Ganief"> Tariq Ganief</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Blackburn"> Jonathan Blackburn</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Millions of babies are still born to HIV-infected mothers each year despite the ramped-up HAART use. However, these infants are HIV uninfected but exposed, which is now a growing population that has weakened immune systems and poorer outcomes. Due to HIV exposure and possible ARV exposure during pregnancy and breastfeeding, these infants are believed to have altered immune responses and microbiomes when compared to their healthy counterparts. The gut microbiome roles an important role in infant development, specifically in the immune system. Research has shown these HIV-exposed, uninfected infants have weaker immune responses to their neonate vaccines, and in developing countries, this leaves them vulnerable to opportunistic disease. By gaining a deeper understanding of the gut microbiome and the products of the microbes via metaproteomic analysis, we can hopefully understand and improve the immune system and health of these infants. To investigate the metaproteome of the infants’ guts, mass spectrometry will be used, followed by data analysis using DIA-NN. The hypothesized results are that the HIV-exposed, uninfected infants have an altered microbiome compared to their healthy counterparts. Additionally, the differences found are hypothesized to be involved with inflammation which would contribute to the poor health of the infants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HIV" title="HIV">HIV</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20spectrometry" title=" mass spectrometry"> mass spectrometry</a>, <a href="https://publications.waset.org/abstracts/search?q=metaproteomics" title=" metaproteomics"> metaproteomics</a>, <a href="https://publications.waset.org/abstracts/search?q=microbiome" title=" microbiome"> microbiome</a> </p> <a href="https://publications.waset.org/abstracts/159308/the-metaproteomic-analysis-of-hiv-uninfected-exposed-infants-gut-microbiome-to-help-understand-their-poor-health-statuses-in-an-african-cohort" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159308.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">91</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">1738</span> The Development of Monk’s Food Bowl Production on Occupational Health Safety and Environment at Work for the Strength of Rattanakosin Local Wisdom</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thammarak%20Srimarut">Thammarak Srimarut</a>, <a href="https://publications.waset.org/abstracts/search?q=Witthaya%20Mekhum"> Witthaya Mekhum</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study analysed and developed a model for monk’s food bowl production on occupational health safety and environment at work for the encouragement of Rattanakosin local wisdom at Banbart Community. The process of blowpipe welding was necessary to produce the bowl which was very dangerous or 93.59% risk. After the employment of new sitting posture, the work risk was lower 48.41% or moderate risk. When considering in details, it was found that: 1) the traditional sitting posture could create work risk at 88.89% while the new sitting posture could create the work risk at 58.86%. 2) About the environmental pollution, with the traditional sitting posture, workers exposed to the polluted fume from welding at 61.11% while with the new sitting posture workers exposed to the polluted fume from welding at 40.47%. 3) On accidental risk, with the traditional sitting posture, workers exposed to the accident from welding at 94.44% while with the new sitting posture workers exposed to the accident from welding at 62.54%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=occupational%20health%20safety" title="occupational health safety">occupational health safety</a>, <a href="https://publications.waset.org/abstracts/search?q=environment%20at%20work" title=" environment at work"> environment at work</a>, <a href="https://publications.waset.org/abstracts/search?q=Monk%E2%80%99s%20food%20bowl" title=" Monk’s food bowl"> Monk’s food bowl</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20intelligence" title=" machine intelligence"> machine intelligence</a> </p> <a href="https://publications.waset.org/abstracts/6679/the-development-of-monks-food-bowl-production-on-occupational-health-safety-and-environment-at-work-for-the-strength-of-rattanakosin-local-wisdom" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6679.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">439</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">1737</span> Arsenic Contamination in Drinking Water Is Associated with Dyslipidemia in Pregnancy </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Begum%20Rokeya">Begum Rokeya</a>, <a href="https://publications.waset.org/abstracts/search?q=Rahelee%20Zinnat"> Rahelee Zinnat</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatema%20Jebunnesa"> Fatema Jebunnesa</a>, <a href="https://publications.waset.org/abstracts/search?q=Israt%20Ara%20Hossain"> Israt Ara Hossain</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rahman"> A. Rahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background and Aims: Arsenic in drinking water is a global environmental health problem, and the exposure may increase dyslipidemia and cerebrovascular diseases mortalities, most likely through causing atherosclerosis. However, the mechanism of lipid metabolism, atherosclerosis formation, arsenic exposure and impact in pregnancy is still unclear. Recent epidemiological evidences indicate close association between inorganic arsenic exposure via drinking water and Dyslipidemia. However, the exact mechanism of this arsenic-mediated increase in atherosclerosis risk factors remains enigmatic. We explore the association of the effect of arsenic on serum lipid profile in pregnant subjects. Methods: A total 200 pregnant mother screened in this study from arsenic exposed area. Our study group included 100 exposed subjects were cases and 100 Non exposed healthy pregnant were controls requited by a cross-sectional study. Clinical and anthropometric measurements were done by standard techniques. Lipidemic status was assessed by enzymatic endpoint method. Urinary As was measured by inductively coupled plasma-mass spectrometry and adjusted with specific gravity and Arsenic exposure was assessed by the level of urinary arsenic level > 100 μg/L was categorized as arsenic exposed and < 100 μg/L were categorized as non-exposed. Multivariate logistic regression and Student’s t - test was used for statistical analysis. Results: Systolic and diastolic blood pressure both were significantly higher in the Arsenic exposed pregnant subjects compared to the Non-exposed group (p<0.001). Arsenic exposed subjects had 2 times higher chance of developing hypertensive pregnancy (Odds Ratio 2.2). In parallel to the findings in Ar exposed subjects showed significantly higher proportion of triglyceride and total cholesterol and low density of lipo protein when compare to non- arsenic exposed pregnant subjects. Significant correlation of urinary arsenic level was also found with SBP, DBP, TG, T chol and serum LDL-Cholesterol. On multivariate logistic regression showed urinary arsenic had a positive association with DBP, SBP, Triglyceride and LDL-c. Conclusion: In conclusion, arsenic exposure may induce dyslipidemia like atherosclerosis through modifying reverse cholesterol transport in cholesterol metabolism. For decreasing atherosclerosis related mortality associated with arsenic, preventing exposure from environmental sources in early life is an important element. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arsenic%20Exposure" title="Arsenic Exposure">Arsenic Exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=Dyslipidemia" title=" Dyslipidemia"> Dyslipidemia</a>, <a href="https://publications.waset.org/abstracts/search?q=Gestational%20Diabetes%20Mellitus" title=" Gestational Diabetes Mellitus"> Gestational Diabetes Mellitus</a>, <a href="https://publications.waset.org/abstracts/search?q=Serum%20lipid%20profile" title=" Serum lipid profile"> Serum lipid profile</a> </p> <a href="https://publications.waset.org/abstracts/122297/arsenic-contamination-in-drinking-water-is-associated-with-dyslipidemia-in-pregnancy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122297.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">125</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">1736</span> Effect of Electromagnetic Radiation on Reproductive System of Male Rat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rohit%20Gautam">Rohit Gautam</a>, <a href="https://publications.waset.org/abstracts/search?q=Kumari%20Vandana%20Singh"> Kumari Vandana Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Jayprakash%20Nirala"> Jayprakash Nirala</a>, <a href="https://publications.waset.org/abstracts/search?q=Nina%20Nancy%20Murmu"> Nina Nancy Murmu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramovatar%20Meena"> Ramovatar Meena</a>, <a href="https://publications.waset.org/abstracts/search?q=Paulraj%20Rajamani"> Paulraj Rajamani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mobile phones have become a vital part of everyone’s life. Mobile phone and mobile phone towers emit RF-EMR (Radiofrequency Electromagnetic Radiation), which becomes a cause of concern to the general public. The study was designed to evaluate the effect of 3G (RF-EMR) on the reproductive system of male Wistar rats. Adult male Wistar rats were used for the study. Animals were divided into two groups, RF-exposed, and sham-exposed (control). RF-exposed rats were exposed to radio frequency radiation (2100 MHz) for 2 hours/day for 45 days. Emitted power density and specific absorption rate (SAR) values were measured during exposure. At the end of the exposure, testis and epididymis were excised out, and their weights were recorded. Sperm cell count, morphology, viability, and reactive oxygen species (ROS) levels were checked. Lipid peroxidation and sperm mitochondrial activity were measured. Histopathology of testis and ultrastructure analysis of sperm were also checked. Result showed a decrease in organ weight and sperm count with alteration in the sperm morphology in exposed group rats. A significant decrease in sperm viability, membrane integrity, and mitochondrial activity was found. Also, an increase in lipid peroxidation and ROS level were found in exposed group animals as compared to control. It may be concluded that exposure to radiofrequency radiation emits from mobile phones leads to oxidative stress-mediated changes in reproductive parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20radiation" title="electromagnetic radiation">electromagnetic radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20oxygen%20species" title=" reactive oxygen species"> reactive oxygen species</a>, <a href="https://publications.waset.org/abstracts/search?q=sperm" title=" sperm"> sperm</a> </p> <a href="https://publications.waset.org/abstracts/117774/effect-of-electromagnetic-radiation-on-reproductive-system-of-male-rat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117774.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">178</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1735</span> Post-Traumatic Stress Disorder Exhibited by Secondary School Students Exposed to Conflict in Kano Metropolis: Efficacy of a Brief Intervention</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Valentine%20Ayo%20Mebu">Valentine Ayo Mebu </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study examined the efficacy of a brief intervention programme in the treatment of post-traumatic stress disorder (PTSD) symptoms exhibited by secondary school students exposed to conflict in Kano metropolis. The study tested three hypotheses that there is no significant difference between post-test re-experiencing, hyper-arousal, and avoidance mean scores of students exposed to the intervention and those who were not exposed to the intervention. The design of the study was an experimental design, specifically the pre-test and post-test control group design. The purposive sampling technique was used to select 60 research participants (male=30, female=30, Mean Age=15.50) for the study. These participants met the Diagnostic Statistical Manual of Mental Disorders (DSM-5) criteria of PTSD symptoms and were randomly assigned to experimental and control groups, respectively. Instrument for data collection was the University of California Post-Traumatic Stress Disorder Reaction Index (UCLA PTSD Index). Findings from the study indicated that there was a significant effect of the intervention on post re-experiencing symptoms scores [ F (1, 57) = 85.97, p=.00, partial eta squared η²=.60], hyper-arousal symptoms scores[ F (1, 57) = 27.81, p=.00, partial eta squared η² =.33], and avoidance symptoms scores [ F (1, 57) = 59.56, p=.00, partial eta squared η² =.51]. The efficacy of this brief psycho-educational intervention as an effective treatment in reducing PTSD symptoms among secondary school students exposed to conflict is supported by the results of this study and this will also add to the existing literature on the effectiveness of psycho-educational intervention in treating PTSD symptoms among students exposed to conflict. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=avoidance%20symptoms" title="avoidance symptoms">avoidance symptoms</a>, <a href="https://publications.waset.org/abstracts/search?q=hyper-arousal%20symptoms" title=" hyper-arousal symptoms"> hyper-arousal symptoms</a>, <a href="https://publications.waset.org/abstracts/search?q=re-experiencing%20symptoms" title=" re-experiencing symptoms"> re-experiencing symptoms</a>, <a href="https://publications.waset.org/abstracts/search?q=post-traumatic%20stress%20disorder" title=" post-traumatic stress disorder"> post-traumatic stress disorder</a>, <a href="https://publications.waset.org/abstracts/search?q=psycho-education" title=" psycho-education"> psycho-education</a> </p> <a href="https://publications.waset.org/abstracts/121998/post-traumatic-stress-disorder-exhibited-by-secondary-school-students-exposed-to-conflict-in-kano-metropolis-efficacy-of-a-brief-intervention" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/121998.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1734</span> After-Cooling Analysis of RC Structural Members Exposed to High Temperature by Using Numerical Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ju-Young%20Hwang">Ju-Young Hwang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyo-Gyoung%20Kwak"> Hyo-Gyoung Kwak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduces a numerical analysis method for reinforced-concrete (RC) structures exposed to fire and compares the result with experimental results. The proposed analysis method for RC structure under the high temperature consists of two procedures. First step is to decide the temperature distribution across the section through the heat transfer analysis by using the time-temperature curve. After determination of the temperature distribution, the nonlinear analysis is followed. By considering material and geometrical nonlinearity with the temperature distribution, nonlinear analysis predicts the behavior of RC structure under the fire by the exposed time. The proposed method is validated by the comparison with the experimental results. Finally, prediction model to describe the status of after-cooling concrete can also be introduced based on the results of additional experiment. The product of this study is expected to be embedded for smart structure monitoring system against fire in u-City. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=RC" title="RC">RC</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20temperature" title=" high temperature"> high temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=after-cooling%20analysis" title=" after-cooling analysis"> after-cooling analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20analysis" title=" nonlinear analysis "> nonlinear analysis </a> </p> <a href="https://publications.waset.org/abstracts/17137/after-cooling-analysis-of-rc-structural-members-exposed-to-high-temperature-by-using-numerical-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17137.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">414</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">1733</span> Durability of Light-Weight Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rudolf%20Hela">Rudolf Hela</a>, <a href="https://publications.waset.org/abstracts/search?q=Michala%20Hubertova"> Michala Hubertova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper focuses on research of durability and lifetime of dense light-weight concrete with artificial light-weight aggregate Liapor exposed to various types of aggressive environment. Experimental part describes testing of designed concrete of various strength classes and volume weights exposed to cyclical freezing, frost and chemical de-icers and various types of chemically aggressive environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aggressive%20environment" title="aggressive environment">aggressive environment</a>, <a href="https://publications.waset.org/abstracts/search?q=durability" title=" durability"> durability</a>, <a href="https://publications.waset.org/abstracts/search?q=physical-mechanical%20properties" title=" physical-mechanical properties"> physical-mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=light-weight%20concrete" title=" light-weight concrete"> light-weight concrete</a> </p> <a href="https://publications.waset.org/abstracts/2400/durability-of-light-weight-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2400.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">268</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">1732</span> Influence of 50 Hz, 1m Tesla Electromagnetic Fields on Serum Male Sex Hormones of Male Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Randa%20M.%20Mostafa">Randa M. Mostafa</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Moustafa"> Y. Moustafa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> During our daily life, we are continuously exposed to the extremely low frequency electromagnetic fields (ELF-EMFs) generated by electric appliances. The possible relation between exposure to (ELF-MFs) and adverse health effects has attracted and passed through long debate sessions. Extremely low frequency is a term used to describe radiation frequencies below 300 Hertz (Hz).It is very important for public health because of the widespread use of electrical power at 50-60 Hz in most countries. This study set out to investigate the impact of chronic exposure of male rats to 50- Hz, 1 mTesla (ELF-EMF) of over periods of 1, 2, and 4 weeks on concentration of serum FSH, LH, and testosterone hormones. 60 male albino rats were divided into 6 groups and were continuously exposed to 50-Hz, 1 m Tesla (ELF-EMF) generated by magnetic field chamber for periods of 1, 2, and 4 weeks. For each experimental point, sham treated group was used as a control. Assay of serum testosterone LH, and FSHwere performed. Serum testosterone showed no significant changes. FSH showed significant increase than sham exposed group after 1 week of field exposure. LH showed significant increase than sham exposed group only after 4 weeks of field exposure. A future detailed molecular studies must be carried out to figure out and may be able to explain the possible interactions between ELF-EMF and hypothalamic-pituitary gonadal axis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extremely%20low%20frequency%20electromagnetic%20fields" title="extremely low frequency electromagnetic fields">extremely low frequency electromagnetic fields</a>, <a href="https://publications.waset.org/abstracts/search?q=testosterone" title=" testosterone"> testosterone</a>, <a href="https://publications.waset.org/abstracts/search?q=follicular%20stimulating%20hormone" title=" follicular stimulating hormone"> follicular stimulating hormone</a>, <a href="https://publications.waset.org/abstracts/search?q=LH" title=" LH "> LH </a> </p> <a href="https://publications.waset.org/abstracts/16414/influence-of-50-hz-1m-tesla-electromagnetic-fields-on-serum-male-sex-hormones-of-male-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16414.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">1731</span> Scanning Electron Microscopy of the Erythrocytes of Channa punctatus (Bloch) Exposed to Mercuric Chloride</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shweta%20Maheshwari">Shweta Maheshwari</a>, <a href="https://publications.waset.org/abstracts/search?q=Anish%20Dua"> Anish Dua</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hematological changes reflect the adverse effects of heavy metals on fish. Hematology is a valuable tool to evaluate pathological condition of the fish. It helps in diagnosing the structural and functional status of fish exposed to toxicants. Morphological alteration in erythrocytes due to environmental stress can be studied through ultra-structural analysis. The aim of the present study was to assess the toxicity of mercuric chloride on red blood cells of an air breathing fish, Channa punctatus. Fish were subjected to chronic experiments using three sublethal concentration of mercuric chloride (0.020mg/L, 0.027mg/L, 0.040mg/L) for a period of 15, 30 and 60 days. Exposed fish of all the three concentrations were subjected to a recovery period of 30 days. A control was maintained in tap water simultaneously. For SEM analysis, blood from caudal vein of fish was taken and examined at an accelerating voltage of 20kV. Scanning electron micrographs revealed elliptical shaped erythrocytes of control fish. Alterations in the erythrocyte morphology such as presence of spherocytes, membrane internalization, crenation of membrane and development of lobopodial projections were observed in the exposed fish. The study revealed that ultra-structural analysis appears to be a sensitive method to evaluate the toxicity of various toxicants to fish. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Channa%20punctatus" title="Channa punctatus">Channa punctatus</a>, <a href="https://publications.waset.org/abstracts/search?q=erythrocytes" title=" erythrocytes"> erythrocytes</a>, <a href="https://publications.waset.org/abstracts/search?q=mercuric%20chloride" title=" mercuric chloride"> mercuric chloride</a>, <a href="https://publications.waset.org/abstracts/search?q=scanning%20electron%20microscopy" title=" scanning electron microscopy"> scanning electron microscopy</a> </p> <a href="https://publications.waset.org/abstracts/37384/scanning-electron-microscopy-of-the-erythrocytes-of-channa-punctatus-bloch-exposed-to-mercuric-chloride" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37384.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">371</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">1730</span> Effect of Concrete Strength on the Bond Between Carbon Fiber Reinforced Polymer and Concrete in Hot Weather</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Usama%20Mohamed%20Ahamed">Usama Mohamed Ahamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research deals with the bond behavior of carbon FRP composite wraps adhered/bonded to the surface of the concrete. Four concrete mixes were designed to achieve a concrete compressive strength of 18, 22.5,25 and 30 MP after 28 days of curing. The focus of the study is on bond degradation when the hybrid structure is exposed to hot weather conditions. Specimens were exposed to 50 0C temperature duration 6 months and other specimens were sustained in laboratory temperature ( 20-24) 0C. Upon removing the specimens from their conditioning environment, tension tests were performed in the machine using a specially manufactured concrete cube holder. A lightweight mortar layer is used to protect the bonded carbon FRP layer on the concrete surface. The results show that the higher the concrete's compressive, the higher the bond strength. The high temperature decreases the bond strength between concrete and carbon fiber-reinforced polymer. The use of a protection layer is essential for concrete exposed to hot weather. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=bond" title=" bond"> bond</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20weather%20and%20carbon%20fiber" title=" hot weather and carbon fiber"> hot weather and carbon fiber</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20fiber%20reinforced%20polymers" title=" carbon fiber reinforced polymers"> carbon fiber reinforced polymers</a> </p> <a href="https://publications.waset.org/abstracts/169015/effect-of-concrete-strength-on-the-bond-between-carbon-fiber-reinforced-polymer-and-concrete-in-hot-weather" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169015.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">108</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1729</span> Evaluation of Acetylcholinesterase, Glutathione S-Transferase and Catalase Activities in the Land Snail Helix aspersa Exposed to Thiamethoxam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ait%20Hamlet%20Smina">Ait Hamlet Smina</a>, <a href="https://publications.waset.org/abstracts/search?q=Bensoltane%20Samira"> Bensoltane Samira</a>, <a href="https://publications.waset.org/abstracts/search?q=Djekoun%20Mohamed"> Djekoun Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Berrebbah%20Houria"> Berrebbah Houria</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In Algeria, the use of insecticides and other phytosanitary products are considerably spreading with the development of agriculture. But, the analyses of the residues of pesticides are not systematically made. In this context, we estimated through an experimental study, the effect of a neonicotinoid insecticide, the thiamethoxam which is used as a commercial preparation on the land snail Helix aspersa. This snail is one of the most abundant gastropod in North-East Algeria. Little information is available in the literature concerning the study of the biochemical markers of mollusks which are exposed to insecticides and especially, thiamethoxam.In this work, adult snails Helix aspersa were used to estimate the effect of a neonicotinoid insecticide (thiamethoxam) on the acetylcholinesterase (AChE), glutathione S-transferase (GST) and catalase (CAT) activities in this gastropod after a treatment of 6 weeks. During this period, snails were exposed by ingestion and contact to fresh lettuce leaves which were soaked with an insecticide solution. The thiamethoxam test solutions were 0, 25, 50, 100 and 200 mg/L, which are lower or equal to the concentrations that are applied in field. The results showed that the enzymatic activities of AChE and GST and CAT increased significantly with a dose-dependent manner. These results confirmed the toxic effect of thiamethoxam on snails exposed to the lettuce contaminated with this neonicotinoid insecticide, likely to be used as biomarker of exposure, at first to thiamethoxam then to other insecticides belonging to the same chemical family, currently present in the environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=helix%20aspersa" title="helix aspersa">helix aspersa</a>, <a href="https://publications.waset.org/abstracts/search?q=insecticide" title=" insecticide"> insecticide</a>, <a href="https://publications.waset.org/abstracts/search?q=thiamethoxam" title=" thiamethoxam"> thiamethoxam</a>, <a href="https://publications.waset.org/abstracts/search?q=AChE" title=" AChE"> AChE</a>, <a href="https://publications.waset.org/abstracts/search?q=GST" title=" GST"> GST</a>, <a href="https://publications.waset.org/abstracts/search?q=CAT" title=" CAT "> CAT </a> </p> <a href="https://publications.waset.org/abstracts/13086/evaluation-of-acetylcholinesterase-glutathione-s-transferase-and-catalase-activities-in-the-land-snail-helix-aspersa-exposed-to-thiamethoxam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13086.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">452</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">1728</span> Snails and Fish as Pollution Biomarkers in Lake Manzala and Laboratory C: Laboratory Exposed Snails to Chemical Mixtures </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hanaa%20M.%20M.%20El-Khayat">Hanaa M. M. El-Khayat</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoda%20Abdel-Hamid"> Hoda Abdel-Hamid</a>, <a href="https://publications.waset.org/abstracts/search?q=Kadria%20M.%20A.%20Mahmoud"> Kadria M. A. Mahmoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanan%20S.%20Gaber"> Hanan S. Gaber</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoda"> Hoda</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Abu%20Taleb"> M. A. Abu Taleb</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20E.%20Flefel"> Hassan E. Flefel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Snails are considered as suitable diagnostic organisms for heavy metal–contaminated sites. <em>Biomphalaria alexandrina</em> snails are used in this work as pollution bioindicators after exposure to chemical mixtures consisted of heavy metals (HM); zinc (Zn), copper (Cu) and lead (Pb); and persistent organic pollutants; Decabromodiphenyl ether 98% (D) and Aroclor 1254 (A). The impacts of these tested chemicals, individual and mixtures, on liver and kidney functions, antioxidant enzymes, complete blood picture, and tissue histology were studied. Results showed that Cu was proved to be the highly toxic against snails than Zn and Pb where LC<sub>50</sub> values were 1.362, 213.198 and 277.396 ppm, respectively. Also, <em>B. alexandrina</em> snails exposed to the mixture of HM (¼ LC<sub>5</sub> Cu, Pb and Zn) showed the highest bioaccumulation of Cu and Zn in their whole tissue, the most significant increase in AST, ALT & ALP activities and the highest significant levels of total protein, albumin and globulin. Results showed significant alterations in CAT activity in snail tissue extracts while snail samples exposed to most experimental tests showed significant increase in GST activity. Snail samples that exposed to HM mixtures showed a significant decrease in total hemocytes count while snail samples that exposed to mixtures containing A & D showed a significant increase in total hemocytes and Hyalinocytes. Histopathological alterations in snail samples exposed to individual HM and their mixtures for 4 weeks showed degeneration, edema, hyper trophy and vaculation in head-foot muscle, degeneration and necrotic changes in the digestive gland and accumulation in most tested organs. Also, the hermaphrodite gland showed mature ova with irregular shape and reduction in sperm number. In conclusion, the resulted damage and alterations in <em>B. alexandrina</em> studied parameters can be used as bioindicators to the presence of pollutants in its habitats. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Biomphalaria" title="Biomphalaria">Biomphalaria</a>, <a href="https://publications.waset.org/abstracts/search?q=Zn" title=" Zn"> Zn</a>, <a href="https://publications.waset.org/abstracts/search?q=Cu" title=" Cu"> Cu</a>, <a href="https://publications.waset.org/abstracts/search?q=Pb" title=" Pb"> Pb</a>, <a href="https://publications.waset.org/abstracts/search?q=AST" title=" AST"> AST</a>, <a href="https://publications.waset.org/abstracts/search?q=ALT" title=" ALT"> ALT</a>, <a href="https://publications.waset.org/abstracts/search?q=ALP" title=" ALP"> ALP</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20protein%20albumin" title=" total protein albumin"> total protein albumin</a>, <a href="https://publications.waset.org/abstracts/search?q=globulin" title=" globulin"> globulin</a>, <a href="https://publications.waset.org/abstracts/search?q=CAT" title=" CAT"> CAT</a>, <a href="https://publications.waset.org/abstracts/search?q=histopathology" title=" histopathology"> histopathology</a> </p> <a href="https://publications.waset.org/abstracts/58803/snails-and-fish-as-pollution-biomarkers-in-lake-manzala-and-laboratory-c-laboratory-exposed-snails-to-chemical-mixtures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58803.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">353</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">1727</span> The Effect of Unconscious Exposure to Religious Concepts on Mutual Stereotypes of Jews and Muslims in Israel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lipaz%20Shamoa-Nir">Lipaz Shamoa-Nir</a>, <a href="https://publications.waset.org/abstracts/search?q=Irene%20Razpurker-Apfeld"> Irene Razpurker-Apfeld</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research examined the impact of subliminal exposure to religious content on the mutual attitudes of majority group members (Jews) and minority group members (Muslims). Participants were subliminally exposed to religious concepts (e.g., Mezuzah, yarmulke or veil) and then they filled questionnaires assessing their stereotypes towards the out-group members. Each participant was primed with either in-group religious concepts, out-group concepts or neutral ones. The findings show that the Muslim participants were not influenced by the religious content to which they were exposed while the Jewish participants perceived the Muslims as less 'hostile' when subliminally exposed to religious concepts, regardless of concept type (out-group/in-group). This research highlights the influence of evoked religious content on out-group attitudes even when the perceiver is unaware of prime content. The power that exposure to content in a non-native language has in activating attitudes towards the out-group is also discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intergroup%20attitudes" title="intergroup attitudes">intergroup attitudes</a>, <a href="https://publications.waset.org/abstracts/search?q=stereotypes" title=" stereotypes"> stereotypes</a>, <a href="https://publications.waset.org/abstracts/search?q=majority-minority" title=" majority-minority"> majority-minority</a>, <a href="https://publications.waset.org/abstracts/search?q=religious%20out-group" title=" religious out-group"> religious out-group</a>, <a href="https://publications.waset.org/abstracts/search?q=implicit%20content" title=" implicit content"> implicit content</a>, <a href="https://publications.waset.org/abstracts/search?q=native%20language" title=" native language"> native language</a> </p> <a href="https://publications.waset.org/abstracts/80061/the-effect-of-unconscious-exposure-to-religious-concepts-on-mutual-stereotypes-of-jews-and-muslims-in-israel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80061.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">246</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">1726</span> Divergent Weathering on Two Sides of Plastic Fragments from Coastal Environments Around the Globe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bo%20Hu">Bo Hu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mui-Choo%20Jong"> Mui-Choo Jong</a>, <a href="https://publications.waset.org/abstracts/search?q=Jo%C3%A3o%20Frias"> João Frias</a>, <a href="https://publications.waset.org/abstracts/search?q=Irina%20Chubarenko"> Irina Chubarenko</a>, <a href="https://publications.waset.org/abstracts/search?q=Gabriel%20Enrique%20De-la-Torre"> Gabriel Enrique De-la-Torre</a>, <a href="https://publications.waset.org/abstracts/search?q=Prabhu%20Kolandhasamy"> Prabhu Kolandhasamy</a>, <a href="https://publications.waset.org/abstracts/search?q=Md.%20Jaker%20Hossain"> Md. Jaker Hossain</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20Esiukova"> Elena Esiukova</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Su"> Lei Su</a>, <a href="https://publications.waset.org/abstracts/search?q=Hua%20Deng"> Hua Deng</a>, <a href="https://publications.waset.org/abstracts/search?q=Huahong%20Shi"> Huahong Shi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Plastic debris in coastal environments undergoes a series of aging processes due to the diverse environmental conditions they are exposed to. Existing research to date lacks a thorough understanding of how these processes affect exposed and non-exposed sides of plastic fragments, leading to potentially biased conclusions on how degradation occurs. This study addresses this knowledge gap by examining surface aging characteristics on both sides (e.g., cracks, delaminations, pits, wrinkles and color residues) of 1573 plastic fragments collected from 15 coastal sites worldwide and conducting outdoor aging simulations. A clear contrast was observed between the two sides of the plastic fragments, where one of the sides often displayed more pronounced aging features. Three key indicators were introduced to quantify the aging characteristics of plastic fragments, with values ranging from 0.00 to 58.00 mm/mm2 (line density), 0.00 to 92.12% (surface loss) and 0.00 to 1.51 (texture index), respectively. Outdoor simulations revealed that sun-exposed sides of plastic sheets developed more cracks, pores, and bubbles, while the shaded sides remained smoother. The annual average solar radiation intensity of 4.47 kWh in the experimental area exacerbated the degradation of the sun-exposed side, as confirmed by a significant increase in carbonyl index, with PE rising from 0.50 to 1.70, PP from 0.18 to 1.10, and PVC from 0.45 to 1.57, indicating photoaging. These results highlight the uneven weathering patterns of plastic fragments on shorelines due to varying environmental stresses. In particular, the side facing the sun exhibited more pronounced signs of aging. Outdoor experiments confirmed that the fragments’ sun-exposed sides experienced significantly higher degrees of weathering compared to the shaded sides. This study demonstrated that the divergent weathering patterns on the two sides of beach plastic fragments were primarily driven by differences in light exposure, duration, and mechanical stress. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plastic%20fragments" title="plastic fragments">plastic fragments</a>, <a href="https://publications.waset.org/abstracts/search?q=coastal%20environment" title=" coastal environment"> coastal environment</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20aging%20features" title=" surface aging features"> surface aging features</a>, <a href="https://publications.waset.org/abstracts/search?q=two-sided%20differences" title=" two-sided differences"> two-sided differences</a> </p> <a href="https://publications.waset.org/abstracts/192227/divergent-weathering-on-two-sides-of-plastic-fragments-from-coastal-environments-around-the-globe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192227.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">21</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">1725</span> Chronic Pesticides Exposure and Certain Endocrine Functions Among Farmers in East Almnaif District, Ismailia, Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amani%20Waheed">Amani Waheed</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Kofi"> Mostafa Kofi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaymaa%20Attia"> Shaymaa Attia</a>, <a href="https://publications.waset.org/abstracts/search?q=Soha%20Younis"> Soha Younis</a>, <a href="https://publications.waset.org/abstracts/search?q=Basma%20Abdel%20Hadi"> Basma Abdel Hadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Exposure to pesticides is one of the most important occupational risks among farmers in developing countries. Along with the wide use of pesticides in the world, the concerns over their health impacts are rapidly growing. Objective: To investigate thyroid and reproductive hormones and fasting blood glucose levels among farmers chronically exposed to pesticide from East Almnaif district, Ismailia governorate. Methods: An analytical cross-sectional study was conducted on 43 farmers with active involvement pesticides handling and 43 participants not occupationally exposed to pesticides as the control group. A structured interview questionnaire measuring the sociodemographic characteristics, pesticides exposure characteristics, and safety measures was used. General examination including measurements of height, weight, and blood pressure was done. Moreover, levels of plasma cholinesterase enzyme (PChE), glucose, as well as reproductive and thyroid hormones (TSH, T4, and testosterone) were determined. Results: There were no statistically significant differences between both groups regarding their age, educational level, smoking status, and body mass index. The mean duration of exposure was 20.60 11.06 years. Majority of farmers (76.7%) did not use any personal protective equipment (PPE) during pesticides handling. The mean systolic blood pressure among exposed farmers was greater (134.88 17.18 mm Hg) compared to control group (125 14.69 mm Hg) with statistically significant difference (p = 0.003). The mean diastolic blood pressure was higher (84.02 8.69 mm Hg) compared to control group (78.79 8.98 mm Hg) with statistically significant difference (p = 0.006). The pesticide exposed farmers had statistically significant lower level of PChE (3969.93 1841U/L) than control group (4879.29 1950.08 U/L). Additionally, TSH level was significantly higher in exposed farmers (median =1.39µIU/ml) compared to controls (median = 0.91 µIU/ml) (p=0.032). While, the exposed group had a lower T4 level (6.91 1.91 µg/dl) compared to the control group (7.79 2.10µg/dl), with the statistically significant difference between the two groups (p = 0.045). The exposed group had significantly lower level of testosterone hormone (median=3.37 ng/ml) compared to the control group (median= 6.22 ng/ml) (p=0.003). While, the exposed farmers had statistically insignificant higher level of fasting blood glucose (median =89 mg/dl) than the controls (median=88 mg/dl). Furthermore, farmers who did not use PPE had statistically significant lower level of T4 (6.57 1.81µg/dl) than farmers who used PPE during handling of pesticides (8.01 1.89 µg/dl). Conclusion: Chronic exposure to pesticides exerts disturbing action on reproductive function and thyroid function of the male farmers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chronic%20occupational%20pesticide%20exposure" title="chronic occupational pesticide exposure">chronic occupational pesticide exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=Diabetes%20mellitus" title=" Diabetes mellitus"> Diabetes mellitus</a>, <a href="https://publications.waset.org/abstracts/search?q=male%20reproductive%20hormones" title=" male reproductive hormones"> male reproductive hormones</a>, <a href="https://publications.waset.org/abstracts/search?q=thyroid%20function" title=" thyroid function"> thyroid function</a> </p> <a href="https://publications.waset.org/abstracts/96334/chronic-pesticides-exposure-and-certain-endocrine-functions-among-farmers-in-east-almnaif-district-ismailia-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96334.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">136</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=exposed&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=exposed&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=exposed&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=exposed&page=5">5</a></li> <li class="page-item"><a class="page-link" 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