تصفح Academic حسب العنوان
السجلات المعروضة 19751 -- 19770 من 27693
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Selection of slat separation-to-width ratio of brise-soleil shading considering energy savings, CO2 emissions and visual comfort – a case study in Qatar
( Elsevier Ltd , 2018 , Article)The addition of fixed external shading devices to glazed surfaces reduces the space loads and sensations of visual discomfort caused by excessive day-lighting. The slat-to-slat separation distance of the brise-soleil blinds ... -
Selection of the best dispatch strategy considering techno-economic and system stability analysis with optimal sizing
( Elsevier Ltd , 2022 , Article)In this paper, optimized hybrid off-grid renewable energy systems (HRES) have been designed for two divisional locations in Dhaka and Khulna in Bangladesh. An analysis is conducted using five different load dispatch ... -
Selective Activation of G protein-coupled Estrogen Receptor 1 Attenuates Atherosclerosis.
( Bentham Science Publishers , 2023 , Article Review)Atherosclerosis remains a leading contributor to cardiovascular disease-associated morbidity and mortality. Interestingly, the death rate is higher in men than women from atherosclerosis, and the risk increases for ... -
Selective adsorption of carbon dioxide, methane and nitrogen using resorcinol-formaldehyde-xerogel activated carbon
( Springer New York LLC , 2017 , Article)Resorcinol–formaldehyde xerogel was prepared, carbonized and activated in specific conditions to form resorcinol–formaldehyde activated carbon xerogel (RF-ACX) that was to produce microporous nanoparticles. RF-ACX was used ... -
Selective Crystal Growth Regulation by Chiral α-Hydroxycarboxylic Acids Improves the Strength and Toughness of Calcium Sulfate Cements
( American Chemical Society , 2020 , Article)Natural biominerals, such as bones and teeth, use acidic matrix biomolecules to control growth, morphology, and organization of the brittle hydroxyapatite crystals. This interplay provides biominerals with outstanding ... -
Selective Deeply Supervised Multi-Scale Attention Network for Brain Tumor Segmentation
( MDPI , 2023 , Article)Brain tumors are among the deadliest forms of cancer, characterized by abnormal proliferation of brain cells. While early identification of brain tumors can greatly aid in their therapy, the process of manual segmentation ... -
Selective determination of thiamine (vitamin B1) in pharmaceutical preparations by direct potentiometric argentometric titration with use of the silver-silver sulphide ion-selective electrode
( Elsevier , 1989 , Article)A simple and selective argentometric titration method is described for determination of thiamine (vitamin B1), based on direct potentiometric titration in alkaline media (⩾0.5M) in which a chemical transformation takes ... -
Selective flotation separation of ABS/PC from ESR plastic wastes mixtures assisted by ultrasonic catalyst/H2O2
( Elsevier Ltd , 2019 , Article)The present study investigated the potential recycles of acrylonitile butadiene styrene terpolymers (ABS) from their blends with polymethylmehtacrylate (PMMA), polyCarbonate (PC) and high impact polyStyrene (HIPS) using ... -
Selective gas sensors using graphene and CuO nanorods
( Elsevier B.V. , 2018 , Article)This work reports on the fabrication of sensitive and selective gas sensors fabricated using graphene and/or copper oxide (CuO) nanorods. Herein, three batches of sensors were produced based on graphene/SiO2/Si, CuO nanorods, ... -
Selective H2S sensor based on CuO nanoparticles embedded in organic membranes
( Elsevier B.V. , 2016 , Article)We report on H2S gas sensors based on CuO nanoparticles that are embedded within polymer membranes of poly-vinyl-alcohol (PVA) and glycerol ionic liquid (IL). The nanoparticles were fabricated by the colloid microwave ... -
Selective harmonic elimination for quasi seven-level operation of cascaded-type multilevel converters with unequal DC sources
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Generally, selective harmonic elimination (SHE) complexity for multilevel converters increases with the increase in number of levels. In this paper, an approach for multilevel converters' SHE is introduced. This approach ... -
Selective Harmonic Elimination in a Multilevel Inverter Using Multi-Criteria Search Enhanced Firefly Algorithm
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)This research paper proposes the new multi-criteria search based enhanced firefly algorithm for solving selective harmonic elimination in a multilevel inverter. This new enhanced firefly utilizes adaptive nature of social ... -
Selective harmonic elimination in awide modulation range using modified Newton-raphson and pattern generation methods for a multilevel inverter
( MDPI AG , 2018 , Article)Considering the aim of having low switching losses, especially in medium-voltage and high-power converters, the pre-programmed pulse width modulation technique is very useful because the generated harmonic content can be ... -
Selective harmonics elimination in multilevel inverter by a derivative-free iterative method under varying voltage condition
( ISA - Instrumentation, Systems, and Automation Society , 2019 , Article)Selective Harmonics Elimination Pulse width modulation (SHE PWM) presents an alternative modulation technique to operate medium voltage medium and high power converters as it reduces the switching losses. SHE PWM generates ... -
Selective hydrogen gas sensor using CuFe 2 O 4 nanoparticle based thin film
( Elsevier B.V. , 2016 , Article)Hydrogen gas sensors based on CuFe2O4 nanoparticle thin films are presented in this work. Each gas sensor was prepared by depositing CuFe2O4 thin film on a glass substrate by dc sputtering inside a high vacuum chamber. ... -
Selective inhibition of protein arginine methyltransferase 5 blocks initiation and maintenance of B-cell transformation
( American Society of Hematology , 2015 , Article)Epigenetic events that are essential drivers of lymphocyte transformation remain incompletely characterized. We used models of Epstein-Barr virus (EBV)–induced B-cell transformation to document the relevance of protein ... -
Selective removal of dibenzothiophene from commercial diesel using manganese dioxide-modified activated carbon: A kinetic study
( Taylor and Francis Ltd. , 2015 , Article)With a total concentration of 7055 mgS/kgfuel, the content of organosulphur compounds (OSCs) in local diesel is 20 times higher than the regulated value. Analysis revealed that 30% of OSC is originated from dibenzothiophene ... -
Selectivity Coefficient Of Wire Basket Traps For Tilapia Nilotica
( Qatar University , 1984 , Article)Most methods of estimating growth and mortality rates require samples representative of the population with respect to size of one or more age groups. There is no fishing gear that exhibits equal selectivity towards fish ... -
Selenium and Health: An Update on the Situation in the Middle East and North Africa.
( MDPI , 2019 , Article)Selenium (Se) is an important trace element that should be present in the diet of all age groups to provide an adequate intake. Se is incorporated in 25 known selenoproteins, which mediate the biological effects of Se ... -
Selenium Intake and its Interaction with Iron Intake Are Associated with Cognitive Functions in Chinese Adults: A Longitudinal Study
( MDPI , 2022 , Article)Studies on the relation between selenium intake and cognitive function are inconclusive. This study aimed to examine the associations between dietary selenium intake and cognitive function among Chinese adults and tested ...