تصفح حسب العنوان
السجلات المعروضة 4490 -- 4509 من 49208
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Catalytic activity of photocharged binary TiO2 and WO3 membrane filters: Effect of Al2O3 interlayer on direct vs. mediated electron transfers
( Elsevier , 2022 , Article)One of the challenges facing the practical application of photocatalysis is the termination of catalytic reactions in the absence of irradiation. This study synthesizes photo-charged TiO2/WO3 (TW) and TiO2/Al2O3/WO3 (TAW) ... -
Catalytic C-H oxidations by nonheme mononuclear Fe(II) complexes of two pentadentate ligands: Evidence for an Fe(IV) oxo intermediate
( Elsevier , 2016 , Article)The oxidation reactions of alkanes with hydrogen peroxide and peracids (peracetic acid (PAA) and m-chloroperoxybenzoic acid (mCPBA)) catalysed by two Fe(II) complexes of pentadentate {N5}-donor ligands have been investigated. ... -
Catalytic CO2 conversion to C1 value-added products: Review on latest catalytic and process developments
( Elsevier , 2023 , Article)With the increase in CO2 emissions in the last decades, CO2 capture and storage and CO2 capture and utilization technologies have been interesting topics in literature and industry. CO2 direct utilization for oil gas ... -
Catalytic decomposition of ethanol over bimetallic NiCo catalysts for carbon nanotube synthesis
( Qatar University Press , 2020 , Poster)In this work we investigate the use of NiCo bimetal/oxide as catalyst for hydrogen production from ethanol, with a focus on the deactivation pattern and the nature of the observed carbon deposition [1, 2]. It is well known ... -
Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process
( MDPI , 2019 , Article)In this work, the degradation of 4-ethylpyridine (4EP) in water by a heterogeneous photo-Fenton process (H2O2/Fe3O4/ultraviolet irradiation (UV)) was investigated. More rapid and effective 4EP degradation was obtained with ... -
Catalytic evaluation of Ni-based nano-catalysts in dry reformation of methane
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Development of a highly efficient, nickel-based nano-catalyst in the carbon dioxide reformation of methane is reported. The alumina supported Ni-based catalyst with a metal loading of 5wt% was prepared via solution combustion ... -
Catalytic evaluation of nickel nanoparticles in methane steam reforming
( Elsevier , 2016 , Article)Development of a highly efficient and coke-resistant, nickel nanoparticles (Ni.NPs) based catalyst in the steam reformation reaction of methane is reported. The catalyst was prepared by dispersing Ni-nanoparticles over ... -
Catalytic Fast Pyrolysis of Soybean Straw Biomass for Glycolaldehyde-Rich Bio-oil Production and Subsequent Extraction
( American Chemical Society , 2021 , Article)In this study, soybean straw (SS) as a promising source of glycolaldehyde-rich bio-oil production and extraction was investigated. Proximate and ultimate analysis of SS was performed to examine the feasibility and suitability ... -
Catalytic hydrothermal liquefaction of biomass into bio-oils and other value-added products – A review
( Elsevier Ltd , 2021 , Article)Hydrothermal liquefaction (HTL) is an effective method for the conversion of biomass into biofuel involving moderate temperature and high pressure. However, the yield and quality of bio-oil are not sufficient for ... -
Catalytic methane decomposition to carbon nanostructures and cox-free hydrogen: A mini-review
( MDPI AG , 2021 , Article Review)Catalytic methane decomposition (CMD) is a highly promising approach for the rational production of relatively COx-free hydrogen and carbon nanostructures, which are both important in multidisciplinary catalytic applications, ... -
Catalytic Oxidation Of Petroleum Waxy Distillates
( Qatar University , 1994 , Article)The catalytic oxidation of petroleum waxy distillate (boiling range 400 - 440°C at 760 nun Hg) using KMn04 catalyst and air was studied in a batch reactor. The effect of reaction temperature (100-160°C), air flow rate ... -
Catalytic Reduction of CO2 into Solar Fuels via Ferrite Based Thermochemical Redox Reactions
( Materials Research Society , 2017 , Conference Paper)In this study, Ni based ferrite nanomaterials were synthesized using sol-gel method for solar thermochemical splitting of CO2 using a thermogravimetric analyzer. To synthesize the ferrite materials, the corresponding metal ... -
The catalytic thermo-oxidative decomposition of glimepiride using the isoconversional method
( Springer , 2022 , Article)Applying the isoconversional method to data obtained from thermogravimetric analysis (TGA) can provide vital kinetic information. In this work, the thermal decomposition and oxidation of the antidiabetic drug glimepiride ... -
Categorization does not promote symmetry in Guinea baboons (Papio papio)
( Springer Verlag , 2016 , Article)Humans have the capacity to use stimuli interchangeably by forming equivalence classes, and this ability seems to be supported by our language system. According to Sidman and Tailby (Conditional discrimination vs. matching ... -
The Category 'D' Reconsidered
( Qatar University , 1999 , Article)This study deals with the categorial status of a set of words known as 'determiners' and the features encoded in them. We argue, following a suggestion in Chomsky, 1975, that 'Optimality' conditions on grammar require ... -
Cathepsin B Induced Cardiomyocyte Hypertrophy Requires Activation of the Na+/+ Exchanger Isoform-1
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Background: Progression of the heart to failure is primarily caused due to significant remodeling of both the extracellular matrix (ECM) and subcellular organelles, a hallmark of cardiac hypertrophy (CH). Uncontrolled ECM ... -
Cathepsin B Induced Cardiomyocyte Hypertrophy Requires Activation of The Na+/H+ Exchanger Isoform-1
(2016 , Master Thesis)Multiple studies have demonstrated that proteases, specifically cathepsin B (Cat B) and matrix metalloproteinase-9 (MMP-9) contribute to the remodeling of the extracellular matrix (ECM), a hallmark of cardiac hypertrophy ... -
Cathine and cathinone disposition kinetics and neurotransmitter profile in several organs of rats exposed to a single dose of Catha edulis (Vahl) Forssk. ex Endl. extract
( Walter de Gruyter , 2023 , Article)Catha edulis (Vahl) Forssk. ex Endl. (Khat) is a stimulant plant that contains cathine and cathinone, which its abuses induce euphoria, alertness, and motor activity. Since the toxicokinetics of these substances remain ... -
Caught basking in the winter sun: Preliminary data on winter thermoregulation in the Ethiopian hedgehog, Paraechinus aethiopicus, in Qatar
( Academic Press , 2016 , Article)Biologists focus on thermoregulation of desert mammals in terms of how they minimize heat gain, and put less effort on how they maximize heat gain during the cooler months. Heat gain may contribute to significant energy ...
