Central Laboratories Unit: المرسلات الحديثة
السجلات المعروضة 81 -- 100 من 101
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Effective NiMn nanoparticles-functionalized carbon felt as an effective anode for direct urea fuel cells
( MDPI AG , 2018 , Article)The internal resistances of fuel cells strongly affect the generated power. Basically, in the fuel cell, the anode can be prepared by deposition of a film from the functional electrocatalyst on a proper gas diffusion layer. ... -
The potential impact data of Tylosin and Enrofloxacin veterinary antibiotics on germination and accumulation in barley seed as a forage crop and good dietary sources using LC/MS-MS
( Elsevier , 2019 , Article)In this study, the phytotoxic effects caused by the exposure to five different concentrations of two veterinary antibiotics (Tylosin, and Enrofloxacin) that are commonly used for the treatment of farm animals as antibacterial ... -
Desulfurization of the dibenzothiophene ) (DBT) by using -based imidazolium-basedionic ionic i liquids(Ils)
( EnPress Publisher LLC. , 2018 , Article)In this work we have examined the industrial scale extraction process of ultra low sulfur diesel with the help of simulation software ASPEN Plus®.This work focuses on the [Cnmim][BF4](imidazolium-based) ionic liquid and ... -
CoNi Nanoparticles/CNT Composite as Effective Anode for Direct Urea Fuel Cells
( ESG. , 2018 , Article)CoNi nanoparticles/CNTs composite is introduced as workable anode in the direct urea fuel cells. The proposed anode was prepared by calcination under argon atmosphere of a dried cobalt acetate/nickel acetate/CNTs/ethanol ... -
Stable N-doped & FeNidecorated graphene non-precious electrocatalyst for Oxygen Reduction Reaction in Acid Medium
( Nature Publishing Group , 2018 , Article)NiFe nanoparticles-decorated & N-doped graphene is introduced as an effective and stable nonprecious electrocatalyst for ORR in the acid medium. Compared to conventional Pt/C electrodes under the same conditions, the ... -
Influence of bimetallic nanoparticles composition and synthesis temperature on the electrocatalytic activity of NiMn-incorporated carbon nanofibers toward urea oxidation
( Elsevier , 2018 , Article)High efficiency, cost effectivity and the availability of hydrogen are the advantages of electrolysis as a strategy for urea-containing wastewater treatment. Composition, morphology, and synthesis-temperature distinctly ... -
Leaching of Some Essential and Non-Essential Heavy Metals from Modern Glazed Ceramic Crockeries Imported into Qatar from China, India and Spain
( OMICS International , 2018 , Article)In this study, the leaching potential of ceramic crockeries available in Qatar market has been evaluated using inductively coupled plasma mass spectrometry (ICP-MS). Ceramic crockeries decorated with glaze matter containing ... -
Influence of Ag nanoparticles on state of the art MnO2 nanorods performance as an electrocatalyst for lithium air batteries
( Elsevier , 2018 , Article)Abstract The need for an alternative and efficient electrocatalyst to replace Pt-based noble materials is a goal of prime importance in Li– air battery technology. In this work, novel silver nanoparticles-incorporated MnO2 ... -
Synthesis and Physicochemical Studies of Perovskite Manganite La0.8Ca0.2Nn1−xCoxO3 (0 ≤ x ≤ 0.3)
( The Korean Magnetics Society , 2017 , Article)The physicochemical properties of La0.8Ca0.2Mn1−xCoxO3 nanopowders as a function of Co content (x) have been investigated. La0.8Ca0.2Mn1−xCoxO3 nanopowders were synthesized by sol-gel method and morphologically and ... -
Critical Behavior of La0.8Ca0.2Mn1−xCoxO3 Perovskite (0.1 ≤ x ≤ 0.3)
( MDPI , 2017 , Article)The critical properties of La0.8Ca0.2Mn1−xCoxO3 (x = 0, 0.1, 0.2 and 0.3) compounds were investigated by analysis of the magnetic measurements in the vicinity of their critical temperature. Arrott plots revealed that the ... -
Applicable anode based on Co3O4–SrCO3 heterostructure nanorods-incorporated CNFs with low-onset potential for DUFCs
( Springer , 2017 , Article)Besides the high-current density, lower onset potential of urea electrooxidation is key parameter which influences the direct urea fuel cell performance. In the present article, low-onset potential has been reported for ... -
Engineering of magnetically separable ZnFe2O4@ TiO2 nanofibers for dye-sensitized solar cells and removal of pollutant from water
( Elsevier , 2017 , Article)Abstract In this study, magnetic Zinc Ferrite (ZnFe2O4)@TiO2 nanofibers were prepared by low cost and nontoxic route; hydrothermal technique followed by electrospinning process. The prepared magnetic ZnFe2O4@TiO2 nanofibers ... -
Health and Safety Concerns: Quantitative Studies of Leaching of Metals from Glazed Surfaces of Traditional Ceramic Potteries
( Open Science Publishers , 2017 , Article)Traditional ceramic wares have been known as a source of heavy metals poisoning. Traditional ceramic potteries may be improperly glazed, and the glaze used to make the pottery may contain over amounts of heavy metals. These ... -
ZnO@C (core@shell) microspheres derived from spent coffee grounds as applicable non-precious electrode material for DMFCs
( Nature Publishing Group , 2017 , Article)Although numerous reports have introduced non precious electrocatalysts for methanol oxidation, most of those studies did not consider the corresponding high onset potential which restricts utilization in real fuel cells. ... -
Capacitance of MnO2 Micro-Flowers Decorated CNFs in Alkaline Electrolyte and Its Bi-Functional Electrocatalytic Activity toward Hydrazine Oxidation
( ESG , 2017 , Article)Well-dispersed MnO2 micro-flowers were grown directly on carbon nanofibers via a simple hydrothermal technique without any template. Structure and morphology were characterized by X-ray diffraction (XRD) and field-emission ... -
Evaluation of pesticide residues of organochlorine in vegetables and fruits in Qatar: statistical analysis
( Springer Verlag , 2016 , Article)The study aimed to examine the residues of organochlorines pesticides (OCPs) in vegetables and fruits in Qatar. A total of 127 samples was studied. Ninety percent of the imported samples recorded residues above the maximum ... -
Patulin and patulin producing Penicillium spp. occurrence in apples and apple-based products including baby food
( The Journal of Infection in Developing Countries , 2017 , Article)Introduction: Patulin has raised the international attention because of its health risk. In fact, it has mutagenic, neurotoxic, immunotoxic, genotoxic and gastrointestinal effects in animals. In the present work, patulin ... -
Effective and stable FeNi@ N-doped graphene counter electrode for enhanced performance dye sensitized solar cells
( Elsevier , 2017 , Article)N-doped FeNi@graphene is introduced as effective and stable non-precious counter electrode for the dye sensitized solar cells. After preparation of graphene oxide using the chemical route, the obtained product has been ... -
Novel miniaturized sensors for potentiometric batch and flow-injection analysis (FIA) of perchlorate in fireworks and propellants
( Elsevier B.V. , 2014 , Article)Three planar miniaturized perchlorate membrane sensors (3×5mm2) are prepared using a flexible Kaptan substrate coated with nitron-perchlorate (NT-ClO4) [sensor 1], methylene blue-perchlorate (MB-ClO4) [sensor II] and ... -
Preparation and characterization of wollastonite/titanium oxide nanofiber bioceramic composite as a future implant material
( Elsevier , 2016 , Article)In this study, novel composites consisting of electrospun titanium dioxide (TiO2) nanofibers incorporated into high-purity wollastonite glass ceramics were prepared as materials for use in hard tissue engineering applications. ...
