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Darwish</title> <meta name="description" content="Search results for: Heba Mohamed Darwish"> <meta name="keywords" content="Heba Mohamed Darwish"> <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 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Heba Mohamed Darwish"> <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> 1696</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Heba Mohamed Darwish</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1696</span> Spectra of Mahmoud Darwish: Argumentative Approach in the Poem "Identity Card"</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Sarhan">Haitham Sarhan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The experience of Mahmoud Darwish’s poetry represents one of the leading Arabic creative experiences because of its cultural specificity which is linked to the question of Palestine and its people. The poet Mahmoud Darwish does not stop there, but also reaches out to the whole of the cosmic and openness of the universal human experience. His poetry is rooted in a creative period, and was able to surpass its time. Mahmoud Darwish’s poetry contains diverse metaphors and worlds of genres, which overextends from direct romance to the lattice resistance and further stretches to the imaginary world and to the grand narratives. The poem "Identity Card" was published in his collections "Olive Leaves" and was issued in 1963. This collection highlighted the poems which included a revolutionary position, and formed a 'manifesto' and the statement of the Palestinian resistance, which represented the league of poets of Palestine. This poem has contributed along with other poems in creating a flame of resistance and increased it in the hearts of the Palestinian people. It also exercised considerable influence in the Arab world through what has been wrought from emotional responses and revolutionary impact which still remains. Moreover, this poem has succeeded with other resistance poems and postmodern poets like Nizar Qabbani in bringing modern poetry and culturally transmitted it among the Arab peoples and the masses. In spite of the fact that the poet Mahmoud Darwish exceeded this poem creatively through his other great works, "Identity Card" still has a great effect on peoples past memory’s and present. This need to hear this poem in Mahmoud Darwish’s poetic readings reflects peoples frustration and anger. It is safe to say that it is enticing people to this present day. This revolutionary poem had and still has a magical effect on Arab world. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arab%20contemporary%20poetry" title="Arab contemporary poetry">Arab contemporary poetry</a>, <a href="https://publications.waset.org/abstracts/search?q=identity" title=" identity"> identity</a>, <a href="https://publications.waset.org/abstracts/search?q=memory" title=" memory"> memory</a>, <a href="https://publications.waset.org/abstracts/search?q=argumentation" title=" argumentation"> argumentation</a> </p> <a href="https://publications.waset.org/abstracts/38610/spectra-of-mahmoud-darwish-argumentative-approach-in-the-poem-identity-card" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38610.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">434</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">1695</span> Comfort Evaluation of Summer Knitted Clothes of Tencel and Cotton Fabrics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mona%20Mohamed%20Shawkt%20Ragab">Mona Mohamed Shawkt Ragab</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish"> Heba Mohamed Darwish</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Context: Comfort properties of garments are crucial for the wearer, and with the increasing demand for cotton fabric, there is a need to explore alternative fabrics that can offer similar or superior comfort properties. This study focuses on comparing the comfort properties of tencel/cotton single jersey fabric and cotton single jersey fabric, with the aim of identifying fabrics that are more suitable for summer clothes. Research Aim: The aim of this study is to evaluate the comfort properties of tencel/cotton single jersey fabric and cotton single jersey fabric, with the goal of identifying fabrics that can serve as alternatives to cotton, considering their comfort properties for summer clothing. Methodology: An experimental, analytical approach was employed in this study. Two circular knitting machines were used to produce the fabrics, one with a 24 inches gauge and the other with a 28 inches gauge. Both fabrics were knitted with three different loop lengths (3.05 mm, 2.9 mm, and 2.6 mm) to obtain loose, medium, and tight fabrics for evaluation. Various comfort properties, including air permeability, water vapor permeability, wickability, and thermal resistance, were measured for both fabric types. Findings: The study found a significant difference in comfort properties between tencel/cotton single jersey fabric and cotton single jersey fabric. Tencel/cotton fabric exhibited higher air permeability, water vapor permeability, and wickability compared to cotton fabric. These findings suggest that tencel fabric is more suitable for summer clothes due to its superior ventilation and absorption properties. Theoretical Importance: This study contributes to the exploration of alternative fabrics to cotton by evaluating their comfort properties. By identifying fabrics that offer better comfort properties than cotton, particularly in terms of water usage, the study provides valuable insights into sustainable fabric choices for the fashion industry. Data Collection and Analysis Procedures: The comfort properties of the fabrics were measured using appropriate testing methods. Paired comparison t-tests were conducted to determine the significant differences between tencel/cotton fabric and cotton fabric in the measured properties. Correlation coefficients were also calculated to examine the relationships between the factors under study. Question Addressed: The study addresses the question of whether tencel/cotton single jersey fabric can serve as an alternative to cotton fabric for summer clothes, considering their comfort properties. Conclusion: The study concludes that tencel/cotton single jersey fabric offers superior comfort properties compared to cotton single jersey fabric, making it a suitable alternative for summer clothes. The findings also highlight the importance of considering fabric properties, such as air permeability, water vapor permeability, and wickability, when selecting materials for garments to enhance wearer comfort. This research contributes to the search for sustainable alternatives to cotton and provides valuable insights for the fashion industry in making informed fabric choices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=comfort%20properties" title="comfort properties">comfort properties</a>, <a href="https://publications.waset.org/abstracts/search?q=cotton%20fabric" title=" cotton fabric"> cotton fabric</a>, <a href="https://publications.waset.org/abstracts/search?q=tencel%20fabric" title=" tencel fabric"> tencel fabric</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20jersey" title=" single jersey"> single jersey</a> </p> <a href="https://publications.waset.org/abstracts/169705/comfort-evaluation-of-summer-knitted-clothes-of-tencel-and-cotton-fabrics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169705.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">74</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">1694</span> Amelioration of Over-Expression of bax, Nrf2 and NFК–β in Nano-Sized Titanium Dioxide-Intoxicated Mice by Potent Antioxidants </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maha%20Z.%20Rizk">Maha Z. Rizk</a>, <a href="https://publications.waset.org/abstracts/search?q=Sami%20A.%20Fattah"> Sami A. Fattah</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Darwish"> Heba M. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanaa%20A.%20Ali"> Sanaa A. Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20O.%20Kadry"> Mai O. Kadry </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The increasing use of nanomaterials in consumer and industrial products has aroused global concern regarding their fate in biological systems resulting in demand for parallel risk assessment. The objective of this study is investigating either the effect of individual or combined doses of idebenone, carnosine and vitamin E on amelioration of some biochemical indices of nano sized titanium dioxide (TiO2 NPS) induced metabolic disorders in mice liver. TiO2-NPS was administered in an oral dose of 150 mg/kg for consecutive 14 days followed by oral daily doses of the aforementioned antioxidants for 1 month. TiO2-NPS induced a significant elevation in serum level of ALT and AST, hepatic inflammatory markers (tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6)) and increased the percent of DNA damage which was assessed by COMET assay in addition to the apoptotic marker Caspase-3. Moreover, mRNA gene expression observed by RT-PCR showed a significant overexpression in nuclear factor relation-2 (Nrf2), nuclear factor kappa beta (NF-Kβ) and the apoptotic factor (bax), and a significant down-regulation in the antiapoptotic factor (bcl2) level. In conclusion, idebenone, carnosine and vitamin E ameliorated the deviated parameters with a variable degree with the most pronounced role in alleviating the hazardous effect of TiO2 NPS toxicity following the combination regimen. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=idebenone" title="idebenone">idebenone</a>, <a href="https://publications.waset.org/abstracts/search?q=carnosine" title=" carnosine"> carnosine</a>, <a href="https://publications.waset.org/abstracts/search?q=vitamin%20E" title=" vitamin E"> vitamin E</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO2%20NPS" title=" TiO2 NPS"> TiO2 NPS</a>, <a href="https://publications.waset.org/abstracts/search?q=caspase-3" title=" caspase-3"> caspase-3</a>, <a href="https://publications.waset.org/abstracts/search?q=NrF2" title=" NrF2"> NrF2</a>, <a href="https://publications.waset.org/abstracts/search?q=NF-KB" title=" NF-KB"> NF-KB</a> </p> <a href="https://publications.waset.org/abstracts/7223/amelioration-of-over-expression-of-bax-nrf2-and-nfk-v-in-nano-sized-titanium-dioxide-intoxicated-mice-by-potent-antioxidants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7223.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">386</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">1693</span> Seam Slippage of Light Woven Fabrics with Regards to Sewing Parameters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mona%20Shawky">Mona Shawky</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaled%20M.%20Elsheikh"> Khaled M. Elsheikh</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Darwish"> Heba M. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Eman%20Abd%20El%20Elsamea"> Eman Abd El Elsamea</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Seams are the basic component in the structure of any apparel. The seam quality of the garment is a term that indicates both the aesthetic and functional performance of the garment. Seam slippage is one of the important properties that determine garment performance. Lightweight fabrics are preferred for their aesthetic properties. Since seam slippage is one of the most occurable faults for woven garments, in this study, a design of experiment of the following sewing parameters (three levels of needle size, three levels of stitch density, three levels of the seam allowance, two levels of sewing thread count, and two fabric types) was used to obtain the effect of the interaction between different sewing parameters on-seam slippage force. Two lightweight polyester woven fabrics with different constructions were used with lock stitch 301 to perform this study. Regression equations which can predict seam slippage force in both warp and weft directions were concluded. It was found that fabric type has a significant positive effect on seam slippage force in the warp direction, while it has a significant negative effect on seam slippage force on weft direction. Also, the interaction between needle size and stitch density has a significant positive effect on seam slippage force on warp direction, while the interaction between stitch density and seam allowance has a negative effect on seam slippage force in the weft direction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=needle%20size" title="needle size">needle size</a>, <a href="https://publications.waset.org/abstracts/search?q=regression%20equation" title=" regression equation"> regression equation</a>, <a href="https://publications.waset.org/abstracts/search?q=seam%20allowance" title=" seam allowance"> seam allowance</a>, <a href="https://publications.waset.org/abstracts/search?q=seam%20slippage" title=" seam slippage"> seam slippage</a>, <a href="https://publications.waset.org/abstracts/search?q=stitch%20density" title=" stitch density"> stitch density</a> </p> <a href="https://publications.waset.org/abstracts/128316/seam-slippage-of-light-woven-fabrics-with-regards-to-sewing-parameters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128316.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">159</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1692</span> Enhancement of 2, 4-Dichlorophenoxyacetic Acid Solubility via Solid Dispersion Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tamer%20M.%20Shehata">Tamer M. Shehata</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20S.%20Elsewedy"> Heba S. Elsewedy</a>, <a href="https://publications.waset.org/abstracts/search?q=Mashel%20Al%20Dosary"> Mashel Al Dosary</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Elshehry"> Alaa Elshehry</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Khedr"> Mohamed A. Khedr</a>, <a href="https://publications.waset.org/abstracts/search?q=Maged%20E.%20Mohamed"> Maged E. Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: 2,4-Dichlorophenoxy acetic acid (2,4-D) is a well-known herbicide widely used as a weed killer. Recently, 2,4-D was rediscovered as a new anti-inflammatory agent through in silico as well as in-vivo experiments. However, poor solubility of 2,4-D could represent a problems during pharmaceutical development in addition to lower bioavailability. Solid dispersion (SD) refers to a group of solid products consisting of at least two different components, usually a hydrophobic drug and hydrophilic matrix. It is well known technique for enhancing drug solubility. Therefore, selecting SD as a tool for enhancing 2,4-D could be of great interest to the formulator. Method: In our project, several polymers were investigated (such as PEG, HPMC, citric acid and others) in addition to drug polymer ratios and its effect on solubility. Evaluation of drug polymer interaction was investigated through both Fourier Transform Infrared (FTIR) and Differential Scanning Calorimetry (DSC). Finally, in-vivo evaluation was performed for the best selected preparation through inflammatory response of rat induce hind paw. Results: Results indicated that, citric acid 2,4-D and in ratio of 0.75 : 1 showed modified the dissolution profile of the drug. The FTIR resltes indicated no significant chemical interaction, however DSC showed shifting of the drug melting point. Finally, Carragenan induced rat hind paw edema showed significant reduction of the drug solid dispersion in comparison to the pure drug, indicating rapid and complete absorption of the drug in solid dispersion form. Conclusion: Solid dispersion technology can be utilized efficiently to enhance the solubility of 2,4-D. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solid%20dispersion" title="solid dispersion">solid dispersion</a>, <a href="https://publications.waset.org/abstracts/search?q=2" title=" 2"> 2</a>, <a href="https://publications.waset.org/abstracts/search?q=4-D%20solubility" title="4-D solubility">4-D solubility</a>, <a href="https://publications.waset.org/abstracts/search?q=carragenan%20induced%20edema" title=" carragenan induced edema"> carragenan induced edema</a> </p> <a href="https://publications.waset.org/abstracts/41335/enhancement-of-2-4-dichlorophenoxyacetic-acid-solubility-via-solid-dispersion-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41335.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">453</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">1691</span> Study the Effect of Dermal Application of Stone Hair Dye on Experimental Animals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hatem%20Abdel%20Moniem%20Ahmed">Hatem Abdel Moniem Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Ragaa%20Mohamed%20Abdel%20Maaboud"> Ragaa Mohamed Abdel Maaboud</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20Mubarak"> Heba A. Mubarak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A commercially available Stone Hair Dye (SHD) was spread in Upper Egypt and used for dying woman's hair. Paraphenyl-diamine (PPD) is the main component of SHD and reported as a toxic substance. This work aims to study the systemic effects induced in experimental animals as a result of dermal application of SHD. 21 rats were divided into three groups, and doses of SHD and PPD were applied according to body weight (25 mg/100 g body weight) for 90 days. The results revealed that insignificant decrease in RBC count and Hb level, but there were significant increases in the WBC count, AST, ALT, GPT, and total protein while creatinine level was insignificantly increased. Hepatocytes showed a lot of degenerative changes in the form of vacuolated cytoplasm and irregular deeply stained nuclei with vascular congestion and lymphocytic infiltration, while renal affection indicated the occurrence of atrophy of glomerular capillaries, hyperplasia, and widening of bowman space. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PPD" title="PPD">PPD</a>, <a href="https://publications.waset.org/abstracts/search?q=SHD" title=" SHD"> SHD</a>, <a href="https://publications.waset.org/abstracts/search?q=rats%20and%20histology" title=" rats and histology"> rats and histology</a>, <a href="https://publications.waset.org/abstracts/search?q=biochemistry%20and%20hematology" title=" biochemistry and hematology"> biochemistry and hematology</a> </p> <a href="https://publications.waset.org/abstracts/18075/study-the-effect-of-dermal-application-of-stone-hair-dye-on-experimental-animals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18075.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">451</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1690</span> Protective Impact of Some Natural Extracts Against Acute Hepatotoxicity in Wistar Rats: DNA Protecting, Antioxidant and Anti-Inflammatory Effects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yara%20Mohamed%20Taha">Yara Mohamed Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Ali%20El%20Desouky"> Mohamed Ali El Desouky</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Kamal%20Abdel%20Hakim"> Heba Kamal Abdel Hakim</a>, <a href="https://publications.waset.org/abstracts/search?q=Maha%20Hanafy%20Mahmoud"> Maha Hanafy Mahmoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hepatotoxicity due to drugs and toxic chemicals constitutes a crucial health problem nowadays. Medicinal plants are widely used recently for protecting against many liver disorders and inflammatory conditions. This study aims to evaluate hepatoprotective impact of green tea extract (GTE), rosemary extract (RE) and rosmarinic acid (RA) against hepatotoxins; ferric nitrilotriacetate (Fe-NTA) and diethylnitrosamine (DEN) in rats. Five groups of male Wistar rats were included; one control negative, while the other groups were treated intraperitoneally with DEN as 160 mg.kg-1 b.w. on 15th day and Fe-NTA as 5 mg.kg-1 b.w. on 33rd day. One of them was control positive. The other three groups were pre-administered with daily protective oral doses of either 200 mg.kg-1 b.w. of RE or 1 g.kg- 1 b.w. of GTE or 50 mg.kg-1 b.w. of RA two weeks prior to DEN exposure and continued till the end of the experimental period. The obtained data revealed a highly significant increase of MDA, 8-OHdG, DNA damage percent, a significant depletion of GSH and elevated Gr-1 protein expression in hepatocytes with liver tissue histopathological changes of rats exposed to DEN+Fe-NTA. Pre-administration of protective doses of RE, GTE and RA to DEN+Fe-NTA treated rats could normalize the altered biochemical, histopathological and immunohistochemical parameters. In conclusion, RE, GTE and RA showed a hepatoprotective effect against liver toxicity induced by DEN+Fe-NTA, with the best antioxidant and anti-inflammatory impact were for RA and GTE. Therefore, the current study declared that rosemary, green tea and products enriched with rosmarinic acid should be involved daily in diet of people who are exposed to chemicals and environmental toxins to protect themselves from hepatotoxicity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hepatotoxicity" title="hepatotoxicity">hepatotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=diethylnitrosamine%20and%20ferric%20nitrilotriacetate" title=" diethylnitrosamine and ferric nitrilotriacetate"> diethylnitrosamine and ferric nitrilotriacetate</a>, <a href="https://publications.waset.org/abstracts/search?q=rosemary%20extract%20%28RE%29" title=" rosemary extract (RE)"> rosemary extract (RE)</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20tea%20extract%20%28GTE%29" title=" green tea extract (GTE)"> green tea extract (GTE)</a>, <a href="https://publications.waset.org/abstracts/search?q=rosmarinic%20acid%20%28RA%29" title=" rosmarinic acid (RA)"> rosmarinic acid (RA)</a> </p> <a href="https://publications.waset.org/abstracts/170967/protective-impact-of-some-natural-extracts-against-acute-hepatotoxicity-in-wistar-rats-dna-protecting-antioxidant-and-anti-inflammatory-effects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170967.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">92</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">1689</span> Teachers’ Attitudes and Techniques in EFL Writing in Secondary Schools in Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hosam%20Mohamed%20Darwish">Hosam Mohamed Darwish</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In 2008, the Egyptian Ministry of Education introduced a new national coursebook ‘Hello for Secondary Schools, which recommends a shift in EFL teachers’ instructional practices. Since then, very little attention has been paid to teachers’ techniques in EFL writing classes. Hence, this study aimed at investigating teaching writing practices in secondary schools and exploring the teachers’ attitudes towards EFL writing skill in addition to exploring the difficulties that teachers encountered in EFL writing lessons. The study depended on data triangulation through administering two questionnaires: one to 44 teachers and the other to 24 students, and conducting semi-structured interviews with 11 teachers. Both teachers and students were asked to describe teaching practices in EFL writing classes while the open-ended questions and interviews collected data about the teachers’ difficulties in writing lessons. The questionnaires indicate that teachers have negative attitudes towards teaching writing, and most of their practices are still traditional. Five factors have influenced teachers’ practices: backwash of the test, teachers’ professional development, students’ culture of reading and large classes. The study recommends there has to be a necessary change in the students’ examination system, and ongoing teachers’ professional development should be considered. Finally, a teaching model and implications are suggested. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EFL%20writing" title="EFL writing">EFL writing</a>, <a href="https://publications.waset.org/abstracts/search?q=Egyptian%20secondary%20schools" title=" Egyptian secondary schools"> Egyptian secondary schools</a>, <a href="https://publications.waset.org/abstracts/search?q=teachers%E2%80%99%20attitudes" title=" teachers’ attitudes"> teachers’ attitudes</a>, <a href="https://publications.waset.org/abstracts/search?q=teachers%E2%80%99%20techniques" title=" teachers’ techniques"> teachers’ techniques</a> </p> <a href="https://publications.waset.org/abstracts/32898/teachers-attitudes-and-techniques-in-efl-writing-in-secondary-schools-in-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32898.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">420</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">1688</span> Towards Reliable Mobile Cloud Computing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khaled%20Darwish">Khaled Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Islam%20El%20Madahh"> Islam El Madahh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hoda%20Mohamed"> Hoda Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadia%20El%20Hennawy"> Hadia El Hennawy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cloud computing has been one of the fastest growing parts in IT industry mainly in the context of the future of the web where computing, communication, and storage services are main services provided for Internet users. Mobile Cloud Computing (MCC) is gaining stream which can be used to extend cloud computing functions, services and results to the world of future mobile applications and enables delivery of a large variety of cloud application to billions of smartphones and wearable devices. This paper describes reliability for MCC by determining the ability of a system or component to function correctly under stated conditions for a specified period of time to be able to deal with the estimation and management of high levels of lifetime engineering uncertainty and risks of failure. The assessment procedures consists of determine Mean Time between Failures (MTBF), Mean Time to Failure (MTTF), and availability percentages for main components in both cloud computing and MCC structures applied on single node OpenStack installation to analyze its performance with different settings governing the behavior of participants. Additionally, we presented several factors have a significant impact on rates of change overall cloud system reliability should be taken into account in order to deliver highly available cloud computing services for mobile consumers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cloud%20computing" title="cloud computing">cloud computing</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20cloud%20computing" title=" mobile cloud computing"> mobile cloud computing</a>, <a href="https://publications.waset.org/abstracts/search?q=reliability" title=" reliability"> reliability</a>, <a href="https://publications.waset.org/abstracts/search?q=availability" title=" availability"> availability</a>, <a href="https://publications.waset.org/abstracts/search?q=OpenStack" title=" OpenStack"> OpenStack</a> </p> <a href="https://publications.waset.org/abstracts/37013/towards-reliable-mobile-cloud-computing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37013.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">397</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">1687</span> Eco Scale: A Tool for Assessing the Greenness of Pharmaceuticals Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Mohamed">Heba M. Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Owing to scientific and public concern about health and environment and seeking for a better quality of life; “Green”, “Environmentally” and “Eco” friendly practices have been presented and implemented in different research areas. Subsequently, researchers’ attention is drawn in the direction of greening the analytical methodologies and taking the Green Analytical Chemistry principles (GAC) into consideration. It is of high importance to appraise the environmental impact of each of the implemented green approaches. Compared to the other traditional green metrics (E-factor, Atom economy and the process profile), the eco scale is the optimum choice to assess the environmental impact of the analytical procedures used for pharmaceuticals analysis. For analytical methodologies, Eco-Scale is calculated by allotting penalty points to any factor of the used analytical procedure which disagree and not match with the model green analysis, where the perfect green analysis has its Eco-Scale value of 100. In this work, calculation and comparison of the Eco-Scale for some of the reported green analytical methods was done, to accentuate their greening potentials. Where the different scores can reveal how green the method is, compared to the ideal value. The study emphasizes that greenness measurement is not only about the waste quantity determination but also dictates a holistic scheme, considering all factors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eco%20scale" title="eco scale">eco scale</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20analysis" title=" green analysis"> green analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=environmentally%20friendly" title=" environmentally friendly"> environmentally friendly</a>, <a href="https://publications.waset.org/abstracts/search?q=pharmaceuticals%20analysis" title=" pharmaceuticals analysis"> pharmaceuticals analysis</a> </p> <a href="https://publications.waset.org/abstracts/21750/eco-scale-a-tool-for-assessing-the-greenness-of-pharmaceuticals-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21750.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">438</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">1686</span> Antioxidants Reveal Protection against the Biochemical Changes in Liver, Kidney, and Blood Profiles after Clindamycin/Ibuprofen Administration in Dental Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gouda%20K.%20Helal">Gouda K. Helal</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20I.%20Shabayek"> Marwa I. Shabayek</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20El-Ramly"> Heba A. El-Ramly</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20Awida"> Heba A. Awida</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The adverse effects of Clindamycin (Clind.) / Ibuprofen (Ibu.) combination on liver, kidney, blood elements and the significances of antioxidants (N-acetylcysteine and Zinc) against these effects were evaluated. The study includes: Group I; control n=30, Group II; patients on Clind.300mg/Ibu.400mg twice daily for a week n=30, Group III; patients on Clind.300mg/Ibu.400mg+N-acetylcysteine 200mg twice daily for a week n=15 and Group IV; patients on Clind.300mg/Ibu.400mg+Zinc50mg twice daily for a week n=15. Serum malondialdehyde (MDA), alanine transferase (ALT), aspartate transferase (AST), γ glutamyl transferase (GGT), creatinine, blood urea nitrogen (BUN) were measured. Applying one way ANOVA followed by Tuckey Kramer post test, Group II showed significant increase in ALT, AST, GGT, BUN and decrease in Hb, RBCs, platelets than Group I. Group III showed significant decrease in ALT, AST, GGT, BUN than Group II. Moreover, Group IV showed significant decrease in ALT, AST, GGT and increase in Hb, RBCs, and platelets than Group II. Conclusively, Adding Zinc or N-acetylcysteine buffer the oxidative stress and improve the therapeutic outcome of Clindamycin/Ibuprofen combination. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clindamycin" title="clindamycin">clindamycin</a>, <a href="https://publications.waset.org/abstracts/search?q=ibuprofen" title=" ibuprofen"> ibuprofen</a>, <a href="https://publications.waset.org/abstracts/search?q=adverse%20effects" title=" adverse effects"> adverse effects</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title=" antioxidant"> antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc" title=" zinc"> zinc</a>, <a href="https://publications.waset.org/abstracts/search?q=N-acetylcysteine" title=" N-acetylcysteine"> N-acetylcysteine</a> </p> <a href="https://publications.waset.org/abstracts/12505/antioxidants-reveal-protection-against-the-biochemical-changes-in-liver-kidney-and-blood-profiles-after-clindamycinibuprofen-administration-in-dental-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12505.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">383</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">1685</span> Family Relationships among Users and Non Users of Social Media</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sawsan%20Kamal%20Kalil%20El%20Galad">Sawsan Kamal Kalil El Galad</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Shafik%20Ibrahim%20Mohamed"> Heba Shafik Ibrahim Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Rania%20Ismail%20Moussa"> Rania Ismail Moussa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> New developments in the technological world have made the internet an innovative way for individuals and families to communicate. Social media sites help in fulfilling communication needs and wants of their users. The use of social media may have an effect on the family relation either in a positive or negative manner. This study aimed to investigate the family relationships among users and non users of social media. The study followed a cross- sectional descriptive comparative research design. It was conducted on 360 employees, at Damanhour University in Elbeheira, Egypt. Brief Family Relationship Scale (BFRS) was used to collect the data of this study. The results revealed that the mean score of the social media users is slightly increased in relation to the non users of social media mean score with no significant difference between both groups. It was concluded that using social media for short time has no effect on the family relationship, sitting with family in daily base satisfy the social and emotional needs of its member and enhance family relations. Recommendations encompassed that the time spent on social media should be assessed regularly to prevent being isolated from the family members. Educational programs to increase the parent’s awareness how to deal with their children regarding social media and its risks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=social%20media" title="social media">social media</a>, <a href="https://publications.waset.org/abstracts/search?q=family%20relationships" title=" family relationships"> family relationships</a>, <a href="https://publications.waset.org/abstracts/search?q=communication%20needs" title=" communication needs"> communication needs</a>, <a href="https://publications.waset.org/abstracts/search?q=culture" title=" culture"> culture</a> </p> <a href="https://publications.waset.org/abstracts/159726/family-relationships-among-users-and-non-users-of-social-media" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159726.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">113</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">1684</span> Down Regulation of Smad-2 Transcription and TGF-B1 Signaling in Nano Sized Titanium Dioxide-Induced Liver Injury in Mice by Potent Antioxidants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maha%20Z.%20Rizk">Maha Z. Rizk</a>, <a href="https://publications.waset.org/abstracts/search?q=Sami%20A.%20Fattah"> Sami A. Fattah</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Darwish"> Heba M. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanaa%20A.%20Ali"> Sanaa A. Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Mai%20O.%20Kadry"> Mai O. Kadry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although it is known that nano-TiO2 and other nanoparticles can induce liver toxicity, the mechanisms and the molecular pathogenesis are still unclear. The present study investigated some biochemical indices of nano-sized Titanium dioxide (TiO2 NPS) toxicity in mice liver and the ameliorative efficacy of individual and combined doses of idebenone, carnosine and vitamin E. Nano-anatase TiO2 (21 nm) was administered as a total oral dose of 2.2 gm/Kg daily for 2 weeks followed by the afore-mentioned antioxidants daily either individually or in combination for 1month. TiO2-NPS induced a significant elevation in serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and hepatic oxidative stress biomarkers [lipid peroxides (LP), and nitric oxide levels (NOX), while it significantly reduced glutathione reductase (GR), reduced glutathione (GSH) and glutathione peroxidase(GPX) levels. Moreover the quantitative RT-PCR analysis showed that nano-anatase TiO2 can significantly alter the mRNA and protein expressions of the fibrotic factors TGF-B1, VEGFand Smad-2. Histopathological examination of hepatic tissue reinforced the previous biochemical results. Our results also implied that inflammatory responses and liver injury may be involved in nano-anatase TiO2-induced liver toxicity Tumor necrosis factor-α (TNF-α) and Interleukin -6 (IL-6) and increased the percent of DNA damage which was assessed by COMET assay in addition to the apoptotic marker Caspase-3. Moreover mRNA gene expression observed by RT-PCR showed a significant overexpression in nuclear factor relation -2 (Nrf2), nuclear factor kappa beta (NF-Kβ) and the apoptotic factor (bax), and a significant down regulation in the antiapoptotic factor (bcl2) level. In conclusion idebenone, carnosine and vitamin E ameliorated the deviated previously mentioned parameters with variable degrees with the most pronounced role in alleviating the hazardous effect of TiO2 NPS toxicity following the combination regimen. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nano-anatase%20TiO2" title="Nano-anatase TiO2">Nano-anatase TiO2</a>, <a href="https://publications.waset.org/abstracts/search?q=TGF-B1" title=" TGF-B1"> TGF-B1</a>, <a href="https://publications.waset.org/abstracts/search?q=SMAD-2" title=" SMAD-2"> SMAD-2</a> </p> <a href="https://publications.waset.org/abstracts/7222/down-regulation-of-smad-2-transcription-and-tgf-b1-signaling-in-nano-sized-titanium-dioxide-induced-liver-injury-in-mice-by-potent-antioxidants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7222.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">424</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">1683</span> NiAl-Layered Double Hydroxide: Preparation, Characterization and Applications in Photo-Catalysis and Hydrogen Storage</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Farghali">Ahmed Farghali</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Amar"> Heba Amar</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Khedr"> Mohamed Khedr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> NiAl-Layered Double Hydroxide (NiAl-LDH), one of anionic functional layered materials, has been prepared by a simple co-precipitation process. X-ray diffraction patterns confirm the formation of the desired compounds of NiAl hydroxide single phase and the crystallite size was found to be about 4.6 nm. The morphology of the prepared samples was investigated using scanning electron microscopy and the layered structure was appeared under the transmission electron microscope. The thermal stability and the function groups of NiAl-LDH were investigated using thermal gravimetric analysis (TGA) and Fourier transform infrared (FTIR) respectively. NiAl-LDH was investigated as a photo-catalyst for the degradation of some toxic dyes such as toluidine blue and bromopyrogallol red. It shows good catalytic efficiency in visible light and even in dark. For the first time NiAl-LDH was used for hydrogen storage application. NiAl-LDH samples were exposed to 20 bar applied hydrogen pressure at room temperature, 100 and -193 oC. NiAl-LDH samples appear to have feasible hydrogen storage capacity. It was capable to adsorb 0.1wt% at room temperature, 0.15 wt% at 100oC and storage capacity reached 0.3 wt% at -193 oC. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NiAl-LDH" title="NiAl-LDH">NiAl-LDH</a>, <a href="https://publications.waset.org/abstracts/search?q=preparation" title=" preparation"> preparation</a>, <a href="https://publications.waset.org/abstracts/search?q=characterization" title=" characterization"> characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=photo-catalysis" title=" photo-catalysis"> photo-catalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20storage" title=" hydrogen storage"> hydrogen storage</a> </p> <a href="https://publications.waset.org/abstracts/62871/nial-layered-double-hydroxide-preparation-characterization-and-applications-in-photo-catalysis-and-hydrogen-storage" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62871.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">312</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1682</span> Study the Multifaceted Therapeutic Properties of the IQGAP1shRNA Plasmid on Rat Liver Cancer Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khairy%20M.%20A.%20Zoheir">Khairy M. A. Zoheir</a>, <a href="https://publications.waset.org/abstracts/search?q=Nehma%20A.%20Ali"> Nehma A. Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20M.%20Darwish"> Ahmed M. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20S.%20Kishta"> Mohamed S. Kishta</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20A.%20Abd-Rabou"> Ahmed A. Abd-Rabou</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Abdelhafez"> Mohamed A. Abdelhafez</a>, <a href="https://publications.waset.org/abstracts/search?q=Karima%20F.%20Mahrous"> Karima F. Mahrous</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study comprehensively investigated the multifaceted therapeutic properties of the IQGAP1shRNA plasmid, encompassing its hepatoprotective, immunomodulatory, and anticancer activities. The study employed a Prednisolone-induced immunosuppressed rat model to assess the hepatoprotective and immunomodulatory effects of IQGAP1shRNA plasmid. Using this model, IQGAP1shRNA plasmid was found to modulate haematopoiesis, improving RBC, platelet, and WBC counts, underscoring its potential in hematopoietic homeostasis. Organ atrophy, a hallmark of immunosuppression in spleen, heart, liver, ovaries, and kidneys, was reversed with IQGAP1shRNA plasmid treatment, reinforcing its hepatotrophic and organotropic capabilities. Elevated hepatic biomarkers (ALT, AST, ALP, LPO) indicative of hepatocellular injury and oxidative stress were reduced with GST, highlighting its hepatoprotective and antioxidative effects. IQGAP1shRNA plasmid also restored depleted antioxidants (GSH and SOD), emphasizing its potent antioxidative and free radical scavenging capabilities. Molecular insights into immune dysregulation revealed downregulation of IQGAP1, IQGAP3 interleukin-2 (IL-2), and interleukin-4 (IL-4) mRNA expression in the liver of immunosuppressed rats. IL-2 and IL-4 play pivotal roles in immune regulation, T-cell activation, and B-cell differentiation. Notably, treatment with IQGAP1shRNA plasmid exhibited a significant upregulation of IL-2 and IL-4 mRNA expression, thereby accentuating its immunomodulatory potential in orchestrating immune homeostasis. Additionally, immune dysregulation was associated with increased levels of TNF-α. However, treatment with IQGAP1shRNA plasmid effectively decreased the levels of TNF-α, further underscoring its role in modulating inflammatory responses and restoring immune balance in immunosuppressed rats. Additionally, pharmacokinetics, bioavailability, drug-likeness, and toxicity risk assessment prediction suggest its potential as a pharmacologically favourable agent with no serious adverse effects. In conclusion, this study confirms the therapeutic potential of the IQGAP1shRNA plasmid, showcasing its effectiveness against hepatotoxicity, oxidative stress, immunosuppression, and its notable anticancer activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IQGAP1" title="IQGAP1">IQGAP1</a>, <a href="https://publications.waset.org/abstracts/search?q=shRNA" title=" shRNA"> shRNA</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=liver" title=" liver"> liver</a>, <a href="https://publications.waset.org/abstracts/search?q=rat" title=" rat"> rat</a> </p> <a href="https://publications.waset.org/abstracts/194910/study-the-multifaceted-therapeutic-properties-of-the-iqgap1shrna-plasmid-on-rat-liver-cancer-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/194910.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">3</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">1681</span> Influence of Silicon Carbide Particle Size and Thermo-Mechanical Processing on Dimensional Stability of Al 2124SiC Nanocomposite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20M.%20Emara">Mohamed M. Emara</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Ashraf"> Heba Ashraf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study is to investigation the effect of silicon carbide (SiC) particle size and thermo-mechanical processing on dimensional stability of aluminum alloy 2124. Three combinations of SiC weight fractions are investigated, 2.5, 5, and 10 wt. % with different SiC particle sizes (25 μm, 5 μm, and 100nm) were produced using mechanical ball mill. The standard testing samples were fabricated using powder metallurgy technique. Both samples, prior and after extrusion, were heated from room temperature up to 400ºC in a dilatometer at different heating rates, that is, 10, 20, and 40ºC/min. The analysis showed that for all materials, there was an increase in length change as temperature increased and the temperature sensitivity of aluminum alloy decreased in the presence of both micro and nano-sized silicon carbide. For all conditions, nanocomposites showed better dimensional stability compared to conventional Al 2124/SiC composites. The after extrusion samples showed better thermal stability and less temperature sensitivity for the aluminum alloy for both micro and nano-sized silicon carbide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%202124%20metal%20matrix%20composite" title="aluminum 2124 metal matrix composite">aluminum 2124 metal matrix composite</a>, <a href="https://publications.waset.org/abstracts/search?q=SiC%20nano-sized%20reinforcements" title=" SiC nano-sized reinforcements"> SiC nano-sized reinforcements</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20metallurgy" title=" powder metallurgy"> powder metallurgy</a>, <a href="https://publications.waset.org/abstracts/search?q=extrusion%20mechanical%20ball%20mill" title=" extrusion mechanical ball mill"> extrusion mechanical ball mill</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensional%20stability" title=" dimensional stability"> dimensional stability</a> </p> <a href="https://publications.waset.org/abstracts/20367/influence-of-silicon-carbide-particle-size-and-thermo-mechanical-processing-on-dimensional-stability-of-al-2124sic-nanocomposite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20367.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">526</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">1680</span> Automatic Multi-Label Image Annotation System Guided by Firefly Algorithm and Bayesian Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saad%20M.%20Darwish">Saad M. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20El-Iskandarani"> Mohamed A. El-Iskandarani</a>, <a href="https://publications.waset.org/abstracts/search?q=Guitar%20M.%20Shawkat"> Guitar M. Shawkat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, the amount of available multimedia data is continuously on the rise. The need to find a required image for an ordinary user is a challenging task. Content based image retrieval (CBIR) computes relevance based on the visual similarity of low-level image features such as color, textures, etc. However, there is a gap between low-level visual features and semantic meanings required by applications. The typical method of bridging the semantic gap is through the automatic image annotation (AIA) that extracts semantic features using machine learning techniques. In this paper, a multi-label image annotation system guided by Firefly and Bayesian method is proposed. Firstly, images are segmented using the maximum variance intra cluster and Firefly algorithm, which is a swarm-based approach with high convergence speed, less computation rate and search for the optimal multiple threshold. Feature extraction techniques based on color features and region properties are applied to obtain the representative features. After that, the images are annotated using translation model based on the Net Bayes system, which is efficient for multi-label learning with high precision and less complexity. Experiments are performed using Corel Database. The results show that the proposed system is better than traditional ones for automatic image annotation and retrieval. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=feature%20extraction" title="feature extraction">feature extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20selection" title=" feature selection"> feature selection</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20annotation" title=" image annotation"> image annotation</a>, <a href="https://publications.waset.org/abstracts/search?q=classification" title=" classification"> classification</a> </p> <a href="https://publications.waset.org/abstracts/18552/automatic-multi-label-image-annotation-system-guided-by-firefly-algorithm-and-bayesian-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18552.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">586</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">1679</span> Bitcoin, Blockchain and Smart Contract: Attacks and Mitigations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Rasslan">Mohamed Rasslan</a>, <a href="https://publications.waset.org/abstracts/search?q=Doaa%20Abdelrahman"> Doaa Abdelrahman</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahmoud%20M.%20Nasreldin"> Mahmoud M. Nasreldin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghada%20Farouk"> Ghada Farouk</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20K.%20Aslan"> Heba K. Aslan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Blockchain is a distributed database that endorses transparency while bitcoin is a decentralized cryptocurrency (electronic cash) that endorses anonymity and is powered by blockchain technology. Smart contracts are programs that are stored on a blockchain. Smart contracts are executed when predetermined conditions are fulfilled. Smart contracts automate the agreement execution in order to make sure that all participants immediate-synchronism of the outcome-certainty, without any intermediary's involvement or time loss. Currently, the Bitcoin market worth billions of dollars. Bitcoin could be transferred from one purchaser to another without the need for an intermediary bank. Network nodes through cryptography verify bitcoin transactions, which are registered in a public-book called “blockchain”. Bitcoin could be replaced by other coins, merchandise, and services. Rapid growing of the bitcoin market-value, encourages its counterparts to make use of its weaknesses and exploit vulnerabilities for profit. Moreover, it motivates scientists to define known vulnerabilities, offer countermeasures, and predict future threats. In his paper, we study blockchain technology and bitcoin from the attacker’s point of view. Furthermore, mitigations for the attacks are suggested, and contemporary security solutions are discussed. Finally, research methods that achieve strict security and privacy protocol are elaborated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cryptocurrencies" title="Cryptocurrencies">Cryptocurrencies</a>, <a href="https://publications.waset.org/abstracts/search?q=Blockchain" title=" Blockchain"> Blockchain</a>, <a href="https://publications.waset.org/abstracts/search?q=Bitcoin" title=" Bitcoin"> Bitcoin</a>, <a href="https://publications.waset.org/abstracts/search?q=Smart%20Contracts" title=" Smart Contracts"> Smart Contracts</a>, <a href="https://publications.waset.org/abstracts/search?q=Peer-to-Peer%20Network" title=" Peer-to-Peer Network"> Peer-to-Peer Network</a>, <a href="https://publications.waset.org/abstracts/search?q=Security%20Issues" title=" Security Issues"> Security Issues</a>, <a href="https://publications.waset.org/abstracts/search?q=Privacy%20Techniques" title=" Privacy Techniques"> Privacy Techniques</a> </p> <a href="https://publications.waset.org/abstracts/164642/bitcoin-blockchain-and-smart-contract-attacks-and-mitigations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164642.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">82</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">1678</span> Anxiety and Change in Eating Habits and Health Behaviors among Adult Women during COVID-19 Pandemic Lockdown in Alexandria, Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Heba%20Ahmed%20Abdelaziz">Heba Ahmed Abdelaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Doaa%20Tawfik%20Mohamed%20Ibrahim"> Doaa Tawfik Mohamed Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: COVID-19 pandemic is the major health problem facing the world recently, causing variable effects on mental health and eating behavior. Aim of the study: Identifying changes in eating patterns and other health behaviors in relation to the anxiety caused by the COVID-19 pandemic lockdown in adult females in Alexandria, Egypt. Method: 344 adult females (20+ years old), were included in online self-administered questionnaire. Results: Severe anxiety symptoms was among 34.6% of the studied females especially; those aged 25-40 years, married, non-working or student females, females who had change in their work routine (half or full time from home). Homemade pastries and bakery product then beverages followed by fresh fruits and vegetables were frequently consumed by the studied females than before lockdown while fast foods were decreased during lockdown. Overweight and obesity were high among most of the participants with different grades of anxiety symptoms. Females with moderate and severe anxiety symptoms reported increase in appetite and body weight with irregular sleeping during lockdown. Conclusion: the current study concluded that stressful situations like lockdown due to COVID-19 pandemic is associated with anxiety (severe, moderate, mild then minimal, respectively) along with changes in eating habits, physical activity, sleeping pattern and smoking. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=COVID-19" title="COVID-19">COVID-19</a>, <a href="https://publications.waset.org/abstracts/search?q=lockdown" title=" lockdown"> lockdown</a>, <a href="https://publications.waset.org/abstracts/search?q=females" title=" females"> females</a>, <a href="https://publications.waset.org/abstracts/search?q=anxiety" title=" anxiety"> anxiety</a>, <a href="https://publications.waset.org/abstracts/search?q=eating" title=" eating"> eating</a>, <a href="https://publications.waset.org/abstracts/search?q=stress" title=" stress"> stress</a>, <a href="https://publications.waset.org/abstracts/search?q=lifestyle" title=" lifestyle"> lifestyle</a> </p> <a href="https://publications.waset.org/abstracts/143756/anxiety-and-change-in-eating-habits-and-health-behaviors-among-adult-women-during-covid-19-pandemic-lockdown-in-alexandria-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143756.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">189</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1677</span> Prevalence of Bovine Cysticercosis in Egypt and the Cysticidal Effect of Two Extracts Obtained from Balanites Aegyptiaca and Moringa Oleifera on Mice Model Affected with T. Saginata Cysticerci</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omnia%20M.%20Kandil">Omnia M. Kandil</a>, <a href="https://publications.waset.org/abstracts/search?q=Noha%20M.%20F.%20Hassan"> Noha M. F. Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Doaa%20Sedky"> Doaa Sedky</a>, <a href="https://publications.waset.org/abstracts/search?q=Hatem%20A.%20Shalaby"> Hatem A. Shalaby</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20M.%20Ashry"> Heba M. Ashry</a>, <a href="https://publications.waset.org/abstracts/search?q=Nadia%20M.%20T.%20Abu%20El%20Ezz"> Nadia M. T. Abu El Ezz</a>, <a href="https://publications.waset.org/abstracts/search?q=Sahar%20M.%20Kandeel"> Sahar M. Kandeel</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20S.%20Abdelfattah%20Ying%20L"> Mohamed S. Abdelfattah Ying L</a>, <a href="https://publications.waset.org/abstracts/search?q=Ebtesam%20M.%20Al-Olayan"> Ebtesam M. Al-Olayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present study was to determine the prevalence of bovine cysticercosis in both cattle and buffaloes in Egypt and to assess the cysticidal efficacy of Balanites aegyptiacafruits (B. aegyptiaca) and Moringa oleiferaseeds (M. oleifera) extracts in experimentally infected mice. The study detected the level of tumor necrosis factor (TNF-α) to monitor the immune and inflammatory responses of experimentally infected mice. Through meat inspection, a total number of 2125 male bovines, 2 to 5 years old (1125 cattle and 1000 buffaloes) were examined at official abattoirs in Cairo Governorate. The prevalence of the disease among bovine was 7.8%, (6.31% of cattle and 9.5% of buffaloes). A decrease in the number of cysticerci was found in all treated mice groups, and up to 88% reduction was achieved in the B. aegyptiaca-treated group; higher than that was recorded in both M. oleifera (72.23%) and albendazole-treated ones (80.56%). Postmortem findings proved that M. oleifera and B. aegyptiaca reduced cysticerci numbers comparable to a commercial anthelmintic. The study showed a significant decrease (P<0.001) in TNF-α levels after treatment with Balanites and Moringa extracts, compared with the untreated control and the albendazole-treated groups. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prevalence" title="prevalence">prevalence</a>, <a href="https://publications.waset.org/abstracts/search?q=bovine%20cysticercossis" title=" bovine cysticercossis"> bovine cysticercossis</a>, <a href="https://publications.waset.org/abstracts/search?q=extracts" title=" extracts"> extracts</a>, <a href="https://publications.waset.org/abstracts/search?q=mice" title=" mice"> mice</a> </p> <a href="https://publications.waset.org/abstracts/179143/prevalence-of-bovine-cysticercosis-in-egypt-and-the-cysticidal-effect-of-two-extracts-obtained-from-balanites-aegyptiaca-and-moringa-oleifera-on-mice-model-affected-with-t-saginata-cysticerci" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179143.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">115</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">1676</span> Sudan’s Approach to Knowledge Management in Disaster Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Abdalla%20Elamein%20Boshara">Mohamed Abdalla Elamein Boshara</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Charles%20Woods"> Peter Charles Woods</a>, <a href="https://publications.waset.org/abstracts/search?q=Nour%20Eldin%20Mohamed%20Elshaiekh"> Nour Eldin Mohamed Elshaiekh </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Knowledge Management has become very important for Disaster Management response and planning. This paper proposes the implementation of a Knowledge Management System with a sustainable data collection mechanism for reliable and timely information management to support decision makers in making the right decisions in the timely manner. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=knowledge%20management" title="knowledge management">knowledge management</a>, <a href="https://publications.waset.org/abstracts/search?q=disaster%20management" title=" disaster management"> disaster management</a>, <a href="https://publications.waset.org/abstracts/search?q=incident%20tracking" title=" incident tracking"> incident tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=web%20application" title=" web application"> web application</a> </p> <a href="https://publications.waset.org/abstracts/18077/sudans-approach-to-knowledge-management-in-disaster-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18077.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">780</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">1675</span> Ovarian Hormones and Antioxidants Biomarkers in Dromedary Camels Synchronized with Controlled Intravaginal Drug Release/Ovsynch GPG Program during Breeding Season</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Heba%20Hozyen">Heba Hozyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ragab%20Mohamed"> Ragab Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Amal%20Abd%20El%20Hameed"> Amal Abd El Hameed</a>, <a href="https://publications.waset.org/abstracts/search?q=Amal%20Abo%20El-Maaty"> Amal Abo El-Maaty</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aimed to investigate the effect of CIDR and ovsynch (Gonadotropin-prostaglandine-gonadotropin GPG) protocols for synchronization of follicular waves of dromedary camels on ovarian hormones, oxidative stress and conception during breeding season. Twelve dark colored dromedary camels were divided into two equal groups. The first group was subjected to CIDR insertion for 7 days and blood samples were collected each other day from the day of CIDR insertion (day 0) till day 21. The other group was subjected to GPG system (Ovsynch) and blood samples were collected daily for 11 days. Progesterone (P4) and estradiol were assayed using commercial ELISA diagnostic EIA kits. Catalase (CAT), total antioxidants capacity (TAC), glutathione reduced (GHD), lipid peroxide product (malondialdehyde, MDA) and nitric oxide (NO) were measured colorimetrically using spectrophotometer. Results revealed that CIDR treated camels had significantly high P4 (P= 0.0001), estradiol (P= 0.0001), CAT (P= 0.034), NO (P= 0.016) and TAC (P= 0.04) but significantly low MDA (P= 0.001) and GHD (P= 0.003) compared to GPG treated ones. Camels inserted with CIDR had higher conception rate (66.7%) compared to those treated with GPG (33%). In conclusion, camels treated with CIDR had higher hormonal response and antioxidant capacity than those synchronized with GPG which positively reflected on their conception rate. The better response of camels to CIDR and the higher conception compared to GPG protocol recommends its use for future reproductive management in camels. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidants" title="antioxidants">antioxidants</a>, <a href="https://publications.waset.org/abstracts/search?q=camel" title=" camel"> camel</a>, <a href="https://publications.waset.org/abstracts/search?q=CIDR" title=" CIDR"> CIDR</a>, <a href="https://publications.waset.org/abstracts/search?q=season" title=" season"> season</a>, <a href="https://publications.waset.org/abstracts/search?q=steroid%20hormones" title=" steroid hormones"> steroid hormones</a> </p> <a href="https://publications.waset.org/abstracts/68184/ovarian-hormones-and-antioxidants-biomarkers-in-dromedary-camels-synchronized-with-controlled-intravaginal-drug-releaseovsynch-gpg-program-during-breeding-season" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68184.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">290</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1674</span> The Development of Solar Cells to Maximize the Utilization of Solar Energy in Al-Baha Area</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Ahmed%20Alghamdi">Mohammed Ahmed Alghamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hazem%20Mahmoud%20Ali%20Darwish"> Hazem Mahmoud Ali Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Mohamed%20Abdelraheem"> Mostafa Mohamed Abdelraheem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transparent conducting oxides (TCOs) possess low resistivity, exhibit good adherence to many substrates, and have good transmission characteristics from the visible to near-infrared wavelengths, which make it useful for various applications. Thin films of transparent conducting oxide (TCO’s) have received much attention because of their wide applications in the field of optoelectronic devices. Advancement of transparent conducting oxides TCO’s may not only lie within the improvement of existing materials in use, but also the development of novel materials. Solar cells are devices, which convert solar energy into electricity, either directly via the photovoltaic effect, or indirectly by first converting the solar energy to heat or chemical energy. Solar power has attracted attention of late as the most advanced of the alternative energy resources. The project aims to access the solar energy in Al-Baha region by search for materials (transparent-conductive oxides (TCO's)) to use in solar cells with highly transparent to the solar spectrum, have low electrical resistivity, be stable under H-plasma, and have a suitable structure in particular for a-Si solar cells. As the PV surface is exposed to the sunlight, the module temperature increases. High ambient temperatures along with long sunlight exposure time increases the temperature impact on PV cells efficiency. Since Al-Baha area is characterized by an atmosphere and pressure different from their counterparts in Saudi Arabia due to the height above sea level, hence it is appropriate to do studies to improve the efficiency of solar cells under these conditions. In this work, some ion change materials will be deposited using either sputtering/ or electron beam evaporation techniques. The optical properties of the synthesized materials will be studied in details for solar cell application. As we will study the effect of some dyes on the optical properties of the prepared films. The efficiency and other parameters of solar cell will be determined. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thin%20films" title="thin films">thin films</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title=" solar cell"> solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20properties" title=" optical properties"> optical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a> </p> <a href="https://publications.waset.org/abstracts/33180/the-development-of-solar-cells-to-maximize-the-utilization-of-solar-energy-in-al-baha-area" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33180.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">469</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1673</span> Isolation and Molecular Identification of Two Fungal Strains Capable of Degrading hydrocarbon Contaminants on Saudi Arabian Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amr%20A.%20EL%20Hanafy">Amr A. EL Hanafy</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasir%20Anwar"> Yasir Anwar</a>, <a href="https://publications.waset.org/abstracts/search?q=Saleh%20A.%20Mohamed"> Saleh A. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Saleh%20Mohamed%20Saleh%20Al-Garni"> Saleh Mohamed Saleh Al-Garni</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamal%20S.%20M.%20Sabir"> Jamal S. M. Sabir </a>, <a href="https://publications.waset.org/abstracts/search?q=Osama%20A.%20H.%20Abu%20Zinadah"> Osama A. H. Abu Zinadah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Morsi%20Ahmed"> Mohamed Morsi Ahmed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the vicinity of the red sea about 15 fungi species were isolated from oil contaminated sites. On the basis of aptitude to degrade the crude oil and DCPIP assay, two fungal isolates were selected amongst 15 oil degrading strains. Analysis of ITS-1, ITS-2 and amplicon pyrosequencing studies of fungal diversity revealed that these strains belong to Penicillium and Aspergillus species. Two strains that proved to be the most efficient in degrading crude oil was Aspergillus niger (54 %) and Penicillium commune (48 %) Subsequent to two weeks of cultivation in BHS medium the degradation rate were recorded by using spectrophotometer and GC-MS. Hence, it is cleared that these fungal strains has the capability of degradation and can be utilized for cleaning the Saudi Arabian environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fungal%20%20strains" title="fungal strains">fungal strains</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrocarbon%20contaminants" title=" hydrocarbon contaminants"> hydrocarbon contaminants</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20identification" title=" molecular identification"> molecular identification</a>, <a href="https://publications.waset.org/abstracts/search?q=biodegradation" title=" biodegradation"> biodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=GC-MS" title=" GC-MS"> GC-MS</a> </p> <a href="https://publications.waset.org/abstracts/36036/isolation-and-molecular-identification-of-two-fungal-strains-capable-of-degrading-hydrocarbon-contaminants-on-saudi-arabian-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36036.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">522</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">1672</span> Economical Working Hours per Workday for a Production Worker under Hazardous Environment </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Darwish">Mohammed Darwish</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Workplace injuries cost organizations significant amount of money. Causes of injuries at workplace are very well documented in the literature and attributed to variety of reasons. One important reason is the long working-hours. The purpose of this paper is to develop a mathematical model that finds the optimal working-hours at workplace. The developed model minimizes the expected total cost which consists of the expected cost incurred due to unsafe conditions of workplace, the other cost is related to the lost production due to work incidents, and the production cost. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=8-hour%20workday" title="8-hour workday">8-hour workday</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20model" title=" mathematical model"> mathematical model</a>, <a href="https://publications.waset.org/abstracts/search?q=optimal%20working%20hours" title=" optimal working hours"> optimal working hours</a>, <a href="https://publications.waset.org/abstracts/search?q=workplace%20injuries" title=" workplace injuries"> workplace injuries</a> </p> <a href="https://publications.waset.org/abstracts/106265/economical-working-hours-per-workday-for-a-production-worker-under-hazardous-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106265.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">155</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">1671</span> Experimental Study on Friction Factor of Oscillating Flow Through a Regenerator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Sa%C3%AFd%20Kahaleras">Mohamed Saïd Kahaleras</a>, <a href="https://publications.waset.org/abstracts/search?q=Fran%C3%A7ois%20Lanzetta"> François Lanzetta</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Khan"> Mohamed Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Guillaume%20Layes"> Guillaume Layes</a>, <a href="https://publications.waset.org/abstracts/search?q=Philippe%20Nika"> Philippe Nika</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an experimental work to characterize the dynamic operation of a metal regenerator crossed by dry compressible air alternating flow. Unsteady dynamic measurements concern the pressure, velocity and temperature of the gas at the ends and inside the channels of the regenerator. The regenerators are tested under isothermal conditions and thermal axial temperature gradient. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=friction%20factor" title="friction factor">friction factor</a>, <a href="https://publications.waset.org/abstracts/search?q=oscillating%20flow" title=" oscillating flow"> oscillating flow</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerator" title=" regenerator"> regenerator</a>, <a href="https://publications.waset.org/abstracts/search?q=stirling%20machine" title=" stirling machine"> stirling machine</a> </p> <a href="https://publications.waset.org/abstracts/2336/experimental-study-on-friction-factor-of-oscillating-flow-through-a-regenerator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2336.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">507</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">1670</span> Effects of Flexible Flat Feet on Electromyographic Activity of Erector Spinae and Multifidus</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdallah%20Mohamed%20Kamel%20Mohamed%20Ali">Abdallah Mohamed Kamel Mohamed Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Samah%20Saad%20Zahran"> Samah Saad Zahran</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Hamed%20Rashad"> Mohamed Hamed Rashad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Flexible flatfoot (FFF) has been considered as a risk factor for several lower limb injuries and mechanical low back pain. This was attributed to the dysfunction of the lumbopelvic-hip complex musculature. Objective: To investigate the influence of FFF on electromyographic activities of erector spinae and multifidus. Methods: A cross-section study was held between an FFF group (20 subjects) and a normal foot group (20 subjects). A surface electromyography was used to assess the electromyographic activity of erector spinae and multifidus. Group differences were assessed by the T-test. Results: There was a significant increase in EMG activities of erector spinae and multifidus in the FFF group compared with the normal group. Conclusion: There is an increase in EMG activities in erector spinae and multifidus in FFF subjects compared with normal subjects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electromyography" title="electromyography">electromyography</a>, <a href="https://publications.waset.org/abstracts/search?q=flatfoot" title=" flatfoot"> flatfoot</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20back%20pain" title=" low back pain"> low back pain</a>, <a href="https://publications.waset.org/abstracts/search?q=paraspinal%20muscles" title=" paraspinal muscles"> paraspinal muscles</a> </p> <a href="https://publications.waset.org/abstracts/120916/effects-of-flexible-flat-feet-on-electromyographic-activity-of-erector-spinae-and-multifidus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120916.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">213</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1669</span> Ground Short Circuit Contributions of a MV Distribution Line Equipped with PWMSC</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Zellagui">Mohamed Zellagui</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Ahmed%20Hassan"> Heba Ahmed Hassan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposes a new approach for the calculation of short-circuit parameters in the presence of Pulse Width Modulated based Series Compensator (PWMSC). PWMSC is a newly Flexible Alternating Current Transmission System (FACTS) device that can modulate the impedance of a transmission line through applying a variation to the duty cycle (D) of a train of pulses with fixed frequency. This results in an improvement of the system performance as it provides virtual compensation of distribution line impedance by injecting controllable apparent reactance in series with the distribution line. This controllable reactance can operate in both capacitive and inductive modes and this makes PWMSC highly effective in controlling the power flow and increasing system stability in the system. The purpose of this work is to study the impact of fault resistance (RF) which varies between 0 to 30 Ω on the fault current calculations in case of a ground fault and a fixed fault location. The case study is for a medium voltage (MV) Algerian distribution line which is compensated by PWMSC in the 30 kV Algerian distribution power network. The analysis is based on symmetrical components method which involves the calculations of symmetrical components of currents and voltages, without and with PWMSC in both cases of maximum and minimum duty cycle value for capacitive and inductive modes. The paper presents simulation results which are verified by the theoretical analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pulse%20width%20modulated%20series%20compensator%20%28pwmsc%29" title="pulse width modulated series compensator (pwmsc)">pulse width modulated series compensator (pwmsc)</a>, <a href="https://publications.waset.org/abstracts/search?q=duty%20cycle" title=" duty cycle"> duty cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=distribution%20line" title=" distribution line"> distribution line</a>, <a href="https://publications.waset.org/abstracts/search?q=short-circuit%20calculations" title=" short-circuit calculations"> short-circuit calculations</a>, <a href="https://publications.waset.org/abstracts/search?q=ground%20fault" title=" ground fault"> ground fault</a>, <a href="https://publications.waset.org/abstracts/search?q=symmetrical%20components%20method" title=" symmetrical components method"> symmetrical components method</a> </p> <a href="https://publications.waset.org/abstracts/31336/ground-short-circuit-contributions-of-a-mv-distribution-line-equipped-with-pwmsc" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31336.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">500</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">1668</span> Prevalence of Malocclusion and Assessment of Orthodontic Treatment Needs in Malay Transfusion-Dependent Thalassemia Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20H.%20Kosba">Mohamed H. Kosba</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20A.%20Ibrahim"> Heba A. Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Rozita"> H. Rozita </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Statement of the Problem: The life expectancy for transfusion-dependent thalassemia patients has increased dramatically with iron-chelation therapy and other modern management modalities. In these patients, the most dominant maxillofacial manifestations are protrusion of zygomatic bones and premaxilla due to the hyperplasia of bone marrow. The purpose of this study is to determine the prevalence of malocclusion and orthodontic treatment needs according to the Dental Aesthetic Index (DAI) among Malay transfusion-dependent thalassemia patients. Orientation: This is a cross-sectional study consist of 43 Malay transfusion-dependent thalassemia patients, 22 males, and 19 females with the mean age of 15.9 years old (SD 3.58). The subjects were selected randomly from patients attending Paediatrics and Internal Medicine Clinic at Hospital USM and Hospital Sultana Bahiyah. The subjects were assessed for malocclusion according to Angle’s classification, and orthodontic treatment needs using DAI. The results show that 22 of the subjects (51.1%) have class II malocclusion, 12 subjects (28%) have class І, while 9 subjects (20.9%) have class Ⅲ. The assessment of orthodontic treatment needs to reveal 22 cases (51.1%) fall in the normal/minor needs category, 12 subjects (28%) fall in the severe and very severe category, while 9 subjects (20.9%) fall in the definite category. Conclusion & Significance: Half of Malay transfusion-dependent thalassemia patients have Class Ⅱmalocclusion. About 28% had malocclusion and required orthodontic treatment. This research shows that Malay transfusion-dependent thalassemia may require orthodontic management; earlier intervention to reduce the complexity of the treatment later, suggesting functional appliance as a suitable treatment option for them, a twin block appliance together with headgear to restrict maxillary growth suggested for management. The current protocol implemented by the Malaysian Ministry of Health for the management of these patients seems to be sufficient since the result shows that about 28% require orthodontic treatment need, according to DAI. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prevalence" title="prevalence">prevalence</a>, <a href="https://publications.waset.org/abstracts/search?q=DAI" title=" DAI"> DAI</a>, <a href="https://publications.waset.org/abstracts/search?q=thalassaemia" title=" thalassaemia"> thalassaemia</a>, <a href="https://publications.waset.org/abstracts/search?q=angle%20classification" title=" angle classification"> angle classification</a> </p> <a href="https://publications.waset.org/abstracts/120778/prevalence-of-malocclusion-and-assessment-of-orthodontic-treatment-needs-in-malay-transfusion-dependent-thalassemia-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120778.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">143</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">1667</span> Directivity and Gain Improvement for Microstrip Array Antenna with Directors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hassan%20M.%20Elkamchouchi">Hassan M. Elkamchouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Samy%20H.%20Darwish"> Samy H. Darwish</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasser%20H.%20Elkamchouchi"> Yasser H. Elkamchouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20E.%20Morsy"> M. E. Morsy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Methodology is suggested to design a linear rectangular microstrip array antenna based on Yagi antenna theory. The antenna with different directors' lengths as parasitic elements were designed, simulated, and analyzed using HFSS. The calculus and results illustrate the effectiveness of using specific parasitic elements to improve the directivity and gain for microstrip array antenna. The results have shown that the suggested methodology has the potential to be applied for improving the antenna performance. Maximum radiation intensity (Umax) of the order of 0.47w/st was recorded, directivity of 6.58dB, and gain better than 6.07dB are readily achievable for the antenna that working. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=directivity" title="directivity">directivity</a>, <a href="https://publications.waset.org/abstracts/search?q=director" title=" director"> director</a>, <a href="https://publications.waset.org/abstracts/search?q=microstrip%20antenna" title=" microstrip antenna"> microstrip antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=gain%20improvment" title=" gain improvment"> gain improvment</a> </p> <a href="https://publications.waset.org/abstracts/46501/directivity-and-gain-improvement-for-microstrip-array-antenna-with-directors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46501.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">457</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=Heba%20Mohamed%20Darwish&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish&page=5">5</a></li> <li class="page-item"><a class="page-link" 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href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish&page=57">57</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Heba%20Mohamed%20Darwish&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul 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