Browsing by Author "Shraim, Amjad M."
Now showing items 1-12 of 12
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3-Aminopyridine Salicylidene: A Sensitive and Selective Chemosensor for the Detection of Cu(II), Al(III), and Fe(III) with Application to Real Samples
Hijji, Yousef M.; Rajan, Rajeesha; Shraim, Amjad M. ( MDPI , 2022 , Article)Interest in developing selective and sensitive metal sensors for environmental, biological, and industrial applications is mounting. The goal of this work was to develop a sensitive and selective sensor for certain metal ... -
Atypical coupling method for the preparation of 1, 2-di (thiophen-2-yl) ethene-1, 2-diol compounds via a cu (ii) catalyst
Warad, Ismail K; Shraim, Amjad M.; Al-Ali, Anas; Salih, Kifah S. M.; Zarrouk, Abdelkader; Hijji, Yousef... more authors ... less authors ( justia patents , 2022 , Other)Presented herein is a coupling method for the preparation of 1,2 -di ( thiophen - 2 -yl ) ethane -1,2 -diol compounds, including ( E )-1,2 -di(thiophen - 2 -yl )ethene - 1,2 -diol, via a Cu (II ) catalyst . -
Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market
Shraim, Amjad M.; Ahmad, Mohammad I.; Rahman, Mohammad Sulaiman F.; Ng, Jack C. ( 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), ... -
Density functional theory study on the catalytic dehydrogenation of methane on MoO3 (010) surface
Ismail, Badran; Sahar Riyaz, Najamus; Shraim, Amjad M.; Nassar, Nashaat N. ( Elsevier , 2022 , Article)Methane conversion offers hydrocarbon building blocks of high market value, which are easier to transport than natural gas. Under non-oxidative conditions, the process can also produce clean hydrogen fuel. In this study, ... -
Diversity of arbuscular mycorrhizal fungi and its chemical drivers across dryland habitats
Adenan, Sakeenah; Oja, Jane; Alatalo, Juha M.; Shraim, Amjad M.; Alsafran, Mohammed; Tedersoo, Leho; Zobel, Martin; Ahmed, Talaat... more authors ... less authors ( Springer , 2021 , Article)Qatar is largely characterized by a hyper-arid climate and low soil fertility which create a stressful soil environment for arbuscular mycorrhizal (AM) fungi. In a study of AM fungal communities and their relationship with ... -
Ether, sulfide and sulfone derivatives of cinnamaldehyde: Insights into synthesis, structural elucidation and solvatochromism
Al-Marri, Jawaher S.; Shraim, Amjad M.; Salih, Kifah S.M. ( Elsevier B.V. , 2024 , Article)Symmetric ether, sulfide and sulfone derivatives based on Schiff base functionalized group (3a-c) were synthesized via classical condensation of 4,4′-diaminodiphenyl precursors (1a-c) and cinnamaldehyde (2) in methanol at ... -
Ether, sulfide and sulfone derivatives of cinnamaldehyde: Insights into synthesis, structural elucidation and solvatochromism
Jawaher S., Al-Marri; Shraim, Amjad M.; Salih, Kifah S.M. ( Elsevier , 2024 , Article)Symmetric ether, sulfide and sulfone derivatives based on Schiff base functionalized group (3a-c) were synthesized via classical condensation of 4,4′-diaminodiphenyl precursors (1a-c) and cinnamaldehyde (2) in methanol at ... -
Loading Rates of Dust and Metals in Residential Houses of Arid and Dry Climatic Regions
Shraim, Amjad M.; Alenazi, Duna A.; Abdel-Salam, Abdel-Salam G.; Kumar, Prashant ( Taiwan Association for Aerosol Research , 2016 , Article)Dust samples were collected from 38 naturally ventilated houses for 12 weeks. Effects of three variables in two groups each were evaluated: proximity to traffic density (main- and side-roads), cigarettes smoking (smoking ... -
New tetradentate Schiff base Cu(II) complexes: synthesis, physicochemical, chromotropism, fluorescence, thermal, and selective catalytic oxidation
Salih, Kifah S.M.; Shraim, Amjad M.; Al-Mhini, Soaad R.; Al-Soufi, Ranim E.; Warad, Ismail ( Springer , 2021 , Article)Three neutral Cu(II)/ƞ4-NNNO Schiff base complexes (1-3) were prepared from the (E)-4-nitro-2-(((2-(piperazin-1-yl)ethyl)imino)methyl)phenol, tetradentate Schiff base (SB) ligand, and the corresponding copper(II) salts. ... -
Rice is a potential dietary source of not only arsenic but also other toxic elements like lead and chromium
Shraim, Amjad M. ( Elsevier B.V. , 2017 , Article)Rice is a staple food and a good source of nutrition for half of the earth’s population including Middle Eastern countries. However, rice may accumulate hazardous levels of toxic elements. In KSA, rice is imported from ... -
Synthesis of Novel Aqua ƞ4-NNNO/Cu(II) Complexes as Rapid and Selective Oxidative Catalysts for O-Catechol: Fluorescence, Spectral, Chromotropism and Thermal Analyses
Shraim, Amjad M.; Salih, Kifah S.M.; Al-Soufi, Ranim E.; Al-Mhini, Soaad R.; Ahmad, Mohammad I.; Warad, Ismail... more authors ... less authors ( MDPI , 2021 , Article)A new tetradentate Schiff base (SB), (E)-4-fluoro-2-(1-((2-(piperazin-1-yl)ethyl)imino)ethyl)phe-nol, was synthesized from condensation of 2-(1-piperazinyl)ethylamine and 5-fluoro-2-hydroxyacetophe-none. This ligand was ... -
Zebrafish larvae as a model to demonstrate secondary iron overload.
Nasrallah, Gheyath K; Younes, Nadin N; Baji, Missbah H; Shraim, Amjad M; Mustafa, Ibrahim ( Wiley , 2018 , Article)Thalassemia is the most common genetically inherited blood disorder arising from a defect in hemoglobin production, resulting in ineffective erythropoiesis and severe hemolytic anemia. While transfusion therapy corrects ...