تصفح Central Laboratories Unit Research حسب العنوان
السجلات المعروضة 8 -- 27 من 124
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Bacillus thuringiensis strains isolated from Qatari soil, synthesizing δ-endotoxins highly active against the disease vector insect Aedes aegypti Bora Bora
( Elsevier , 2020 , Article)© 2020 Bacillus thuringiensis (Bt) is a Gram-positive soil bacterium that has been recognized as an effective bioinsecticide active against plant, animal and human pathogenic and disease vector insects. During its sporulation ... -
Bioinspired synthesis of calcium magnesium aluminate nanoparticles using aloe vera extract: A promising material for electrochemical sensors, antibacterial and environmental remediation applications
( Elsevier , 2024 , Article)Aloe vera (Aloe barbadensis miller) leaf extract was used in green fuel-assisted microwave synthesis to prepare Calcium Magnesium Aluminate (CMA). The synthesized CMA was characterized by X-ray diffraction (XRD), Fourier ... -
Blue applicability grade index assessment and response surface modelling to synchronous determination of metformin hydrochloride, vildagliptin and dapagliflozin propanediol monohydrate by HPTLC method
( Springer Nature , 2025 , Article)Diabetes mellitus is major chronic disease found in human due to stressful lifestyle and bad food habit. Recently, the Central Drugs Standard Control Organization of India has approved combination of metformin hydrochloride, ... -
Bronchodilator Monoterpenes from the Fruits of Trachyspermum ammi L.
( ACG Publications , 2024 , Article)Trachyspermum ammi is widely used among the people in the Arabian Peninsula to treat general respiratory problems including bronchoconstriction. In this study, the fruit extracts and its fractions and purely isolated ... -
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 ... -
The Carcinogenic and Non-Carcinogenic Health Risks of Metal(oid)s Bioaccumulation in Leafy Vegetables: A Consumption Advisory
( Frontiers Media , 2021 , Article)High levels of metal(oid)s in soil or food pose a severe health risk to humans. The potential toxicants find their way into the living systems via the food chain, following bioaccumulation in edible plants, including leafy ... -
Carica Papaya leaf-infused metal oxide nanocomposite: a green approach towards water treatment and antibacterial applications
( Springer , 2024 , Article)This study successfully synthesized ZnO–CuO nanocomposite using the hydrothermal method with Carica papaya leaf extract. The incorporation of the leaf extract significantly enhanced the nanocomposite properties, a novel ... -
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 ... -
Collision/reaction cell ICP-MS with shielded torch and sector field ICP-MS for the simultaneous determination of selenium isotopes in biological matrices
( Humana Press Inc , 2011 , Article)The determinations of selenium isotopes in biological samples were performed using both inductively coupled plasma collision/reaction cell quadruple mass spectrometer (CRC-ICP-QMS) and inductively coupled plasma sector ... -
Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market
( Elsevier , 2022 , Article)Twenty-two brown rice varieties available in the Qatari market were analyzed for essential and toxic elements by ICP-MS. Found concentrations (µg/kg) were: As: 171 ± 78 (62–343), Cd: 42 ± 60 (4–253), Cr: 515 ± 69 (401–639), ... -
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 ... -
A Convenient One-Pot Synthesis of Novel Benzimidazole–Thiazinone Derivatives and Their Antimicrobial Activity
( Multidisciplinary Digital Publishing Institute (MDPI) , 2024 , Article)Background: The increasing prevalence of antimicrobial resistant highlights the urgent need for the new therapeutic agents. This study aimed to design and synthesize fused tricyclic benzimidazole–thiazinone derivatives ... -
Copper-Catalyzed Dual Cyclization for the Synthesis of Quinindolines
( MDPI , 2020 , Article)A synthetic approach to quinindoline derivatives by the Cu-catalyzed dual cyclization has been developed. This catalytic reaction is a practical method for the systematic synthesis of quinindoline core structure, which ... -
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 ... -
Crystallite Size Effects on Electrical Properties of Nickel Chromite (NiCr2O4) Spinel Ceramics: A Study of Structural, Magnetic, and Dielectric Transitions
( Multidisciplinary Digital Publishing Institute (MDPI) , 2024 , Article)The effect of sintering temperature on the structural, magnetic, and dielectric properties of NiCr2O4 ceramics was investigated. A powder X-ray analysis indicates that the prepared nanocrystallites effectively inhibit the ... -
Database Facilitated Screening with NMR Spectroscopy Analysis for Drug Detection
( IEEE , 2019 , Conference)© 2019 IEEE. Drug detection plays the key role in the enforcement of drug regulations. Various detection methods for them are thus developed. However, in most investigations, the most time-consuming and tedious part is not ... -
Degradation of hydroxychloroquine by electrochemical advanced oxidation processes
( Elsevier , 2020 , Article)In this work, the degradation of hydroxychloroquine (HCQ) drug in aqueous solution by electrochemical advanced oxidation processes including electrochemical oxidation (EO) using boron doped diamond (BDD) and its combination ... -
Degradation-fragmentation of marine plastic waste and their environmental implications: A critical review
( Elsevier , 2022 , Article Review)This review critically evaluates the plastic accumulation challenges and their environmental (primarily) and human (secondarily) impacts. It also emphasizes on their degradation and fragmentation phenomena under marine ... -
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 ... -
Detecting Organic Nitrogen with 1H-15N HMBC Spectra
( Qatar University Press , 2021 , Poster)NMR spectroscopy has been the most important tool for organic chemistry research, providing detailed structure information. While 1H and 13C NMR spectra were frequently measured, 15N NMR spectra were relatively rare, even ...
