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Now showing items 5601-5610 of 12116
Study of the effects of dust, relative humidity, and temperature on solar PV performance in Doha: Comparison between monocrystalline and amorphous PVS
(
Taylor & Francis
, 2013 , Article)
The sensitivity of various solar photovoltaic technologies to dust, temperature, and relative humidity is investigated for Doha's environment. Results obtained show that monocrystalline photovoltaics (PVs) have efficiencies ...
Study of a ternary blend system for bulk heterojunction thin film solar cells
(
Institute of Physics Publishing
, 2016 , Article)
In this research, we report a bulk heterojunction (BHJ) solar cell consisting of a ternary blend system. Poly(3-hexylthiophene) P3HT is used as a donor and [6,6]-phenyl C61-butyric acid methylester (PCBM) plays the role ...
Staff and student experiences and attitudes towards smoking and smoking cessation, University of Jeddah, Saudi Arabia
(
European Publishing
, 2021 , Article)
Introduction:
Tobacco smoking causes an estimated 7 million deaths per annum with 70 thousand of those occurring in the Kingdom of Saudi Arabia (KSA) where the National Transformation Program highlights the need to ...
التحليل البعدي لآراء المعلمين واتجاهاتهم نحو سياسة دمج ذوي صعوبات التعلم في المدارس العادية
(
المعهد الماليزي للعلوم والتنمية
, 2022 , Article)
دفعت الجهود ا المبذولة في دولة قطر في مجال التعليم إلى الاهتمام بالطلبة ذوي صعوبات التعلم، من خلال دمج هؤلاء الطلبة في المدارس مع الطلبة العاديين؛ بهدف علاجهم لتنمية الثقة بأنفسهم والشعور بالاستقرار والأمان. وقد قامت الدولة ...
Silica-based chelating resin bearing dual 8-Hydroxyquinoline moieties and its applications for solid phase extraction of trace metals from seawater prior to their analysis by ICP-MS
(
Elsevier B.V.
, 2019 , Article)
Solid phase extraction (SPE) using chelating resins has been established as a convenient technique for samples pretreatment prior to trace metal analysis from complex matrices. Oxine chelating agents (e.g., 8-Hydroxyquinoline ...
Natural aging of shape stabilized phase change materials based on paraffin wax
(
Elsevier Ltd
, 2017 , Article)
Natural aging of shape-stabilized phase change materials containing linear low density polyethylene (LLDPE), paraffin wax and expanded graphite (EG) in Qatari climate has been studied. It was found that expanded graphite ...
Nanoclay compatibilization of phase separated polysulfone/polyimide films for oxygen barrier
(
Elsevier Ltd
, 2017 , Article)
Polyimide (PI) and Polysulfone (PSF) films are used in many applications ranging from electronic film capacitors to membranes for gas separation and water purification, yet their phase separation issues limit many potential ...
Computational exploration of the effect of molecular medium on the tautomerization of azo prodrug of 5-aminosalicylic acid
(
Elsevier Inc.
, 2019 , Article)
The characterization of potential tautomerization of pharmaceutical materials has significant importance. Sulfasalazine (SSZ) is a prodrug that bears 5-aminosalicylic acid and pyridylamino-sulfonyl-phenyl moieties bridged ...
Effect of pH on acidic and basic chelating agents used in the removal of iron sulfide scales: A computational study
(
Elsevier B.V.
, 2019 , Article)
Iron sulfide scale is a major challenge in the upstream section of the oil and gas industry. It is responsible for precipitate formation in tubulars, and it damages equipment. This leads to a loss in production. Mechanical ...
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 ...