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Now showing items 19855-19874 of 51813
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Photoenhanced degradation of methylene blue on polyaniline engineered multiferroics (BiAl0.3Mn0.3Fe0.4O3) nanocomposite systems: A comprehensive study
( Desalination Publications , 2017 , Article)This study encompasses the synthesis of polyaniline (PANI) composites with different contents of BiAl0.3Mn0.3Fe0.4O3 (12.5%, 25%, 37.5% and 50% w/w) nanoparticles (NPs). The surface morphologies and crystallite structures ... -
Photoimmobilization of zwitterionic polymers on surfaces to reduce cell adhesion
( Academic Press Inc. , 2017 , Article)Simple and robust methods for modifying hydrophobic polymer surfaces with zwitterionic polymers using UV irradiation were developed. Two random zwitterionic copolymers consisting of either carboxybetaine or sulfobetaine ... -
Photoinduced electron transfer interaction of anthraquinones with aniline quenchers: Influence of methyl substitution in aniline donors
( Elsevier , 2017 , Article)© 2016 Elsevier B.V. Photoinduced electron transfer between triplet state of 9,10-anthraquinone (AQ) and its two derivatives: 2-chloro-9,10-anthraquinone (CAQ) and sodium anthraquinone-2-sulfonate (AQS) and ground state ... -
Photonics and fracture toughness of heterogeneous composite materials
( Nature Publishing Group , 2017 , Article)Fracture toughness measures the resistance of a material to fracture. This fundamental property is used in diverse engineering designs including mechanical, civil, materials, electronics and chemical engineering applications. ... -
Photoperiod and salinity effects on survival and some blood parameters in female Bufo regularis
( Qatar University , 1986 , Article)This study, investigates the effect of different salinities injected (30, 70 and 100 % sea water) and photoperiods (L:D/8:16,L:D/12:12 and L: D / 16 : 8 ) on female Bufo regularis (1) survival rate, (2 ) oxygen and carbon ... -
Photopolymerization of Polymeric Composites in Drug Delivery, Tissue Engineering, and Other Biomedical Applications
( Springer , 2019 , Book chapter)Photopolymerization of polymeric composites has been widely used in several biomedical applications including, drug delivery, tissue engineering, and cell encapsulation as it combines the properties of both the photopolymerizable ... -
Photoresponse of silicon with asymmetric area contacts
( Institute of Physics Publishing , 2016 , Article)We report on high performance metal-semiconductor-metal (MSM) photosensors based on asymmetric metal pad areas. The reported devices require a single-step metal deposition, and exhibit large photo response even under ... -
Photosensitivity and Photocatalytic Activity of ZnO Thin Films Annealed in Different Environmental Conditions
( Springer Nature , 2022 , Article)The microwave-assisted successive ionic layer adsorption and reaction (mSILAR) deposition method was employed for the synthesis of nano-polycrystalline zinc oxide (ZnO) thin film. In this study, annealing of the prepared ... -
Photostability of the Oleic Acid-Encapsulated Water-Soluble CdxSeyZn1-xS1-y Gradient Core-Shell Quantum Dots
( American Chemical Society , 2017 , Article)Composite systems where quantum dots (QDs) are combined with other nanomaterials (e.g., gold nanorods) in aqueous solutions have attracted broad attention - both for their potential in applications and for studies of ... -
Photosynthetic acclimation to high temperatures in wheat
( John Wiley & Sons, Ltd. , 1992 , Article)Growth and photosynthetic performance were assessed for the Finnish wheat Triticum aestivum L. var. APU under a cool (13/10�C day/night) and a warm (30/25�C day/night) regime. Plants exhibited a certain degree of acclimation ... -
Photovoltaic Solar Cells and Panels Waste in Jordan: Figures, Facts, and Concerns
( MDPI , 2022 , Article)Even though the Kingdom of Jordan is moving in the right direction and adopting clean energy sources such as PV plants, the waste problem will eventually emerge within a few decades and will be an overwhelming issue if not ... -
Photovoltaic System Ensemble Prediction System
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Conference Paper)Solar energy is the major renewable energy in Gulf area. The yearly solar irradiance is one of the highest in the world with more than 2000kWh/m2. Consequently, nations in the Gulf area have intended their energy investing ... -
Phyllosilicate nanoclay-based aqueous nanoparticle sorbent for CO2 capture at ambient conditions
( Elsevier Ltd , 2017 , Article)We report a new and effective aqueous sorbent for CO2 capture at ambient conditions based on aminopropyl magnesium phyllosilicate nanoparticles (aminoclay). Combining the advantages of both liquid and solid amine sorbents, ... -
Phyllosphere and phylloplane fungi of some herbal plants belonging to Labiatae, Solanaceae and Umbelliferae in Egypt
( Qatar University , 1997 , Article)Survey on the occurrence of phyllosphere and phylloplane fungi on leaves surface of 15 different kinds of fresh herbs (three samples of each kind) belonging to three plant families (five kinds belonging to each of Labiatae, ... -
Phylogenetic analyses of peanut resistance gene candidates and screening of different genotypes for polymorphic markers
( Elsevier , 2009 , Article)The nucleotide-binding-site-leucine-rich-repeat (NBS–LRR)-encoding gene family has attracted much research interest because approximately 75% of the plant disease resistance genes that have been cloned to date are from ... -
Phylogenetic Diversity of Cyanobacteria from Qatar Coastal Waters
(2014 , Master Thesis)Cyanobacteria represent the major microorganism phyla, being diverse and widespread group inhabiting most of the earth's environments. The recent increase of occurrence of toxic cyanobacterial strains in the marine environment ... -
Phylogenetic studies on the architectural features of Amphibian (bufo regularis) and mammalian (oryctolagus cuniculus) kidneys
( Qatar University , 1994 , Article)The results of the present study revealed that mesonephric and metanephric kidneys of both the anamniotes (Bufo regularis) and the amniotes (Oryctolagus cuniculus) vertebrates respectively differ morphologically, anatomically ... -
Phylogeographic Patterns in Africa and High Resolution Delineation of Genetic Clades in the Lion (Panthera leo)
( Nature Publishing Group , 2016 , Article)Comparative phylogeography of African savannah mammals shows a congruent pattern in which populations in West/Central Africa are distinct from populations in East/Southern Africa. However, for the lion, all African populations ... -
Phylogeography of lions (Panthera leo ssp.) reveals three distinct taxa and a late Pleistocene reduction in genetic diversity
( Blackwell Publishing Ltd , 2009 , Article)Lions were the most widespread carnivores in the late Pleistocene, ranging from southern Africa to the southern USA, but little is known about the evolutionary relationships among these Pleistocene populations or the ... -
Physical activity as a counteracting measure to mitigate the harmful effects of COVID-19 lockdowns: Special focus on healthy children, adolescents, adults, elderly, athletes, and people with Down syndrome
( Elsevier , 2021 , Book chapter)The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that originated in China in December 2019 has become a global public health emergency and has had a major impact on physical activity behaviors globally. ...