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السجلات المعروضة 21603 -- 21622 من 26317
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Towards ultra high frequency and high efficiency gate drive circuits
(2013 , Conference Paper)Recent developments in semiconductor technology enabled developing converters with ultra high switching frequency to achieve high power densities which increased the complexity of designing optimized gate drive circuits. ... -
Towards understanding the effects of climatic and environmental factors on solar PV performance in arid desert regions (Qatar) for various PV technologies
( IEEE , 2012 , Conference Paper)The sensitivity of various solar photovoltaic technologies to dust, temperature and relative humidity is investigated for Qatar's environment. Results obtained show that mono-crystalline PVs have efficiencies as high as ... -
Towards understanding the genetics of Autism
( Frontiers in Bioscience , 2016 , Article Review)Autism spectrum disorder (ASD) includes a group of neurodevelopmental disorders that affect communication skills, social interaction and intellectual ability. Despite evidence suggesting a strong genetic link with ASD, the ... -
Towards understanding the mechanisms of actions of carcinoembryonic antigen-related cell adhesion molecule 6 in cancer progression
( Wiley Open Access , 2017 , Article Review)Human carcinoembryonic antigen (CEA) is the prototypic member of a family of highly related cell surface glycoproteins that includes carcinoembryonic antigenrelated cell adhesion molecule 6 (CEACAM6) and others. CEACAM6 ... -
Toxic Effect Of Lannate On Cellular Defence System In Erythrocyte Of Rat
( Qatar University , 1996 , Article)Lannate 1 - methomyl was incubated with erythrocytes of rats at different concentrations. It has been observed that there was a decrease in the activities of superoxide dismutase and glutathione reductase after 1/2 and 16 ... -
Toxic heavy metal (Pb and Cd) content in tobacco cigarette brands in Selangor state, Peninsular Malaysia
( Springer International Publishing , 2019 , Article)Cadmium (Cd) and lead (Pb) are ubiquitous metals widely distributed in the environment, resulting in toxic health effects. This project aims to evaluate Pb and Cd as toxic elements in 15 different tobacco cigarette brands ... -
Toxic metals in packed rice: Effects of size, type, origin, packing season, and storage duration
( Elsevier , 2023 , Article)The aim of our study was to quantify toxic metals in rice, to determine factors affecting its contamination, and evaluate exposure from its consumption in Lebanon and United Arab Emirates (UAE). For this, a market screening ... -
"Toxic pleasures”: A study of eating out behavior in Arab female university students and its associations with psychological distress and disordered eating
( Elsevier , 2018 , Article)University years are a critical period in which young people establish independence and adopt lasting health behaviors. The aim of this study was to estimate the associations between eating out, psychological distress, ... -
Toxicity assessment of di(2-ethylhexyl) phthalate using zebrafish embryos: Cardiotoxic potential
( Elsevier , 2024 , Article)Plasticizers are considered as newly emerged contaminants. They are added to plastics to increase their flexibility and softness. Phthalate plasticizers including the Di-2-ethylhexyl phthalates (DEHP) are toxic and induce ... -
Toxicity assessment of treated sewage effluent using the zebrafish embryo model
( Qatar University Press , 2020 , Poster)Background: In a context of tremendous economic value, the management and protection of water resources in Qatar has long been a significant issue as part of the global wastewater management plan. The process is based on ... -
Toxicity evaluation of selected ionic liquid compounds on embryonic development of Zebrafish.
( Elsevier , 2018 , Article)Hydrate formation in seafloor pipelines is considered an economic and flow assurance issue for the oil and gas industries. Ionic liquids (ILs) have been recently used as potential hydrate inhibitors. Although branded as ... -
Toxicity Evaluation of Stearamidopropyl Dimethylamine Surfactant on Embryonic Development of Zebrafish
( Qatar University Press , 2020 , Poster)Background: Surfactants best known for their use in the industry of detergents, household products, and cosmetics. Usually, the amount of released surfactants into the environment is diluted during secondary water treatment. ... -
Toxicity of Cobalt and Nickel to Fusarium Solani Isolated From Saudi Arabian Soil
( Qatar University , 1994 , Article)Fusarium solani isolated from Saudi Arabian soil was able to grow on liquid media containing up to 300 ug/ml cobalt or nickel. F. solani was tolerant to cobalt than nickel. The results provide evidence of the accumulation ... -
Toxin stability improvement and toxicity increase against dipteran and lepidopteran larvae of Bacillus thuringiensis crystal protein Cry2Aa
( Wiley , 2016 , Article)BACKGROUND Bacillus thuringiensis δ-endotoxins are the most widely used biopesticides for controlling economically important crop pests and disease vectors. Improving their efficacy is of great benefit. Here, an improvement ... -
Toxoplasma infection and milk consumption: Meta-analysis of assumptions and evidences.
( Taylor & Francis , 2017 , Article)Toxoplasmosis is the most widespread infection worldwide. It occurs within congenital contamination, organ transplant or immune system depression. Primary infection is mainly foodborne with the ingestion of raw or undercooked ... -
TPPR: A Trust-Based and Privacy-Preserving Platoon Recommendation Scheme in VANET
( Institute of Electrical and Electronics Engineers Inc. , 2022 , Article)Vehicle platoon, a novel vehicle driving paradigm that organizes a group of vehicles in the nose-to-tail structure, has been considered as a potential solution to reduce traffic congestion and increase travel comfort. In ... -
Trace element composition of size-fractionated suspended particulate matter samples from the Qatari Exclusive Economic Zone of the Arabian Gulf: the role of atmospheric dust
( Copernicus Publications , 2020 , Article)We analyzed net-tow samples of natural assemblages of plankton, and associated particulate matter, from the Exclusive Economic Zone (EEZ) of Qatar in the Arabian Gulf. Size-fractionated suspended particles were ... -
Trace Metals In Qatari Fish And Shellfish
( Qatar University , 1991 , Article)Fish, prawns and crabs purchased at the retail market in Doha, were analysed for cadmium, chromium, copper, lead and zinc. The results indicated significantly elevated concentrations of cadmium in the flesh of the Qatari ... -
Trace Metals in Wastewater Ponds in Qatar
( Qatar University , 2002 , Article)A one-year monitoring program was conducted to determine the extent of metal contamination in two wastewater ponds in Qatar. Abu-Hamour pond receives untreated domestic and industrial waste while Abu-NakhIa pond receives ... -
Traceability for adaptive information security in the cloud
( IEEE Computer Society , 2014 , Conference Paper)One of the key challenges in cloud computing is the security of the consumer data stored and processed by cloud machines. When the usage context of a cloud application changes, or when the context is unknown, there is a ...
