تصفح Central Laboratories Unit Research حسب العنوان
السجلات المعروضة 67 -- 86 من 124
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Jatropha curcas oil a potential feedstock for biodiesel production: A critical review
( Elsevier , 2024 , Article Review)Biodiesel is a low-emissions diesel substitute fuel made from renewable resources. The excessive reliance on edible oils for biodiesel production raises concerns about food-versus-fuel issues including starvation in poor ... -
l-Proline-Catalyzed Three-Component Reaction of 4-Chloro-3-formylcoumarin, Sodium Sulfide, and α-Halo Ketones: A Direct Approach to Thieno[3,2- c ]coumarins
( Georg Thieme Verlag KG , 2023 , Article)A new protocol for the synthesis of thieno[3,2-c]coumarins is disclosed. In this method, a 3-formyl-2-oxo-2H-chromene-4-thiolate anion is generated in situ by treatment of 4-chloro-3-formylcoumarin with sodium sulfide. ... -
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 ... -
Lipid-based nanoparticles: innovations in ocular drug delivery
( Frontiers Media , 2024 , Article Review)Ocular drug delivery presents significant challenges due to intricate anatomy and the various barriers (corneal, tear, conjunctival, blood-aqueous, blood-retinal, and degradative enzymes) within the eye. Lipid-based ... -
A market basket survey of As, Zn and Se in rice imports in Qatar: Health implications
( Elsevier , 2014 , Article)Qatar is dependent on importation of rice, its staple dish, and is therefore susceptible to compromises of food quality in the global market. This market basket study assesses potential health risks of As exposure from ... -
Mediation of carbonate minerals formation by aerobic bacterial strains isolated from Dohat Faishakh Sabkha in Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference)Carbon dioxide (CO2) is increasingly released to the environment as a result of the extensive use of various industrial facilities. According to the Intergovernmental Panel on Climate Change Report (2015), cumulative ... -
Microplastics in coastal environments of the Arabian Gulf
( Elsevier Ltd , 2017 , Article)Eight sandy beaches along the coastline of Qatar and four sea surface stations on the eastern coast, adjacent to Doha Bay, were surveyed between December 2014 and March 2015. Microplastics, mainly low density polyethylene ... -
Microwave-aided sensitive and eco-friendly HPTLC method for estimation of mirabegron using NBD-Cl as bio-sensing fluorescent probe by Integration of principal component Analysis, response surface modelling and white analytical chemistry approach
( Elsevier B.V. , 2024 , Article)A large number of analytical methods have been used in in-vivo pharmacokinetic investigations and assays of mirabegron, which is used to treat overactive bladder. Because mirabegron does not give fluorescence, there is no ... -
Microwave-derivatized enhanced-spectrofluorophotometric characterization of nateglinide-loaded solid dispersion adsorbate and greenness profile assessment of method
( Springer Nature , 2024 , Article)Nateglinide is an oral meglitinide that treats diabetes. Nateglinide was determined in several commercial formulations using chromatographic and spectrophotometric methods in published research. Quality-by-design approach ... -
Mineralization of Riluzole by Heterogeneous Fenton Oxidation Using Natural Iron Catalysts
( MDPI , 2022 , Article)Fenton (H2O2/Fe2+) system is a simple and efficient advanced oxidation technology (AOT) for the treatment of organic micropollutants in water and soil. However, it suffers from some drawbacks including high amount of the ... -
Natural and depleted uranium in the topsoil of Qatar: Is it something to worry about?
( Elsevier , 2013 , Article)This study examines uranium in soils of Qatar to investigate whether there is any detectable traces of depleted uranium (DU). 409 soil samples were collected using a 10km grid system throughout the State of Qatar. The U ... -
Neonicotinoid insecticides in the environment: A critical review of their distribution, transport, fate, and toxic effects
( Elsevier , 2022 , Article)Neonicotinoid insecticides (NENIs) have become increasingly common in recent decades in the control of crop pests and other plant pathogens. It is undeniable that the practice improves crop yield and economic productivity ... -
Nickel Toxicity Interferes with NO3−/NH4+ Uptake and Nitrogen Metabolic Enzyme Activity in Rice (Oryza sativa L.)
( MDPI , 2022 , Article)The excessive use of nickel (Ni) in manufacturing and various industries has made Ni a serious pollutant in the past few decades. As a micronutrient, Ni is crucial for plant growth at low concentrations, but at higher ... -
Non-covalent functionalization of surfactant-assisted graphene oxide with silver nanocomposites for highly efficient photocatalysis and anti-biofilm applications
( Elsevier , 2024 , Article)This study presents a comprehensive investigation on the synthesis and characterization of surfactant-assisted graphene oxide non-covalent functionalized silver nanocomposites (rGS-AgNPs) for achieving remarkable photocatalytic ... -
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 ... -
A novel mucoadhesive paliperidone-nanoemulsion developed using the ultrasonication method in the treatment of schizophrenia
( Royal Society of Chemistry , 2024 , Article)Aim: To develop paliperidone mucoadhesive-nanoemulsion (PLP-NE) to enhance brain bioavailability. To evaluate comparative effects of PLP-NE and CS-PLP-NE in the treatment of schizophrenia, followed by a toxicity study of ... -
One minute microwave synthesis of [O2N-Ph-CH2-Py = N(Me)2]+[Cl]− ionic liquid: XRD/HSA-interactions, physicochemical, optical, thermal and A DFT/TD-DFT analysis
( Elsevier , 2021 , Article)1-(4-nitrobenzyl)-4-dimethylaminopyridinium chloride, [O2N-Ph-CH2-Py = N(Me)2]+[Cl]−, was made available in good yield and within one minute using microwave assisted reaction (MW). The ionic liquid product resonance structure ... -
One-Pot Tandem Ring-Opening and Ring-Closing Metathesis Polymerization of Disubstituted Cyclopentenes Featuring a Terminal Alkyne Functionality
( American Chemical Society , 2020 , Article)Tandem metathesis polymerization of terminal alkynes with a small functional ring-size cycloalkene remains a challenge. A series of 1-propargyl-1′-carboxylate ester monomers M1-M4 derived from 3-cyclopentene initiated by ... -
An overview of heavy metals toxicity in plants, tolerance mechanism, and alleviation through lysine-chelation with micro-nutrients—A novel approach
( Springer , 2022 , Article Review)Abstract: Plants must adapt themselves to the prevailing conditions for their survival, resulting in the acquisition of a wide range of metal tolerance mechanisms. Although many metal elements are essential for the growth ... -
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 ...
