تصفح Chemistry & Earth Sciences حسب العنوان
السجلات المعروضة 41 -- 60 من 548
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Atypical coupling method for the preparation of 1, 2-di (thiophen-2-yl) ethene-1, 2-diol compounds via a cu (ii) catalyst
( 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 . -
Avalanche effect for chemically modified dust mitigation from surfaces
( Nature Research , 2021 , Article)Cost effective dust mitigation from surfaces is one of the challenges in various sectors. The reduction of dust adhesion on surfaces plays a vital role for dust mitigation from surfaces under the gravitational influence. ... -
Batch study for herbicide bentazon adsorption onto palm oil fronds activated carbon
(2012 , Article)The adsorption of herbicide bentazon from aqueous solution onto activated carbon derived from palm oil fronds (PFAC) was investigated through batch study. The effects of both; initial concentration of the bentazon (ranging ... -
Beach tar contamination on the Qatari coastline of the Gulf
( Elsevier , 1999 , Article)Beach tar concentrations were measured along the Qatari coastlines. Tar concentrations, collected from 11 locations, varied in space and time with values ranging between 2 and 1132 g m−1 (average 290 g m−1) of beach front. ... -
Bimetallic palladium-supported halloysite nanotubes for low temperature CO oxidation: Experimental and DFT insights
( Elsevier B.V. , 2019 , Article)The design and fabrication of novel metal-supported catalysts for energy conversion and heterogeneous catalysis is a pivotal theme. Herein, we present the synthesis of bimetallic palladium nanoalloys supported on halloysite ... -
Binary Si–Ge Alloys as High-Capacity Anodes for Li-Ion Batteries
( Wiley , 2020 , Article)Herein, Si–Ge binary alloy films are prepared by deposition on rough copper (Cu) foil and multiwalled carbon nanotube (MWCNT) sheets using radio frequency (RF) magnetron sputtering. The as-prepared SiGe@Cu and SiGe@MWCNT ... -
Bio-Waste Aloe vera Leaves as an efficient adsorbent for Titan Yellow from Wastewater: Structuring of a novel adsorbent using Plackett-Burman factorial design
( MDPI AG , 2019 , Article)Titan yellow (TY), a triazene azo dye, was removed from contaminated wastewater samples using a green adsorbent recycled from Aloe vera leaves (AV) waste. Two adsorbents were developed-air-dried Aloe vera (ADAV) and thermally ... -
Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review
( Springer , 2022 , Article Review)In the context of climate change and the circular economy, biochar has recently found many applications in various sectors as a versatile and recycled material. Here, we review application of biochar-based for carbon sink, ... -
Biochar of spent coffee grounds as per se and impregnated with tio2: Promising waste-derived adsorbents for balofloxacin
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)Biochars (BC) of spent coffee grounds, both pristine (SCBC) and impregnated with titanium oxide (TiO2 @SCBC) were exploited as environmentally friendly and economical sorbents for the fluroquinolone antibiotic balofloxacin ... -
Biochemical And Environmental Studies On Hepatoma Patients In Egypt
( Qatar University , 1994 , Article)The present study was carried out on 102 hepatoma patients collected mainly from the National Cancer Institute, Cairo University, during the period 1988-1991 . Environmental and personal data were collected for each patient. ... -
Biodegradable polysaccharide grafted polyacrylamide inhibitor for corrosion in CO2- saturated saline solution
( Elsevier , 2023 , Article)A biodegradable polysaccharide-based inhibitor is grafted with polyacrylamide (PAM) for oilfields’ sweet corrosion. The green properties of agar and PAM were incorporated to synthesize an agar-grafted-PAM (AGGPAM) inhibitor. ... -
Biodegradable Preformed Particle Gel (PPG) Made of Natural Chitosan Material for Water Shut-Off Application
( MDPI , 2023 , Article)Oil and gas extraction frequently produces substantial volumes of produced water, leading to several mechanical and environmental issues. Several methods have been applied over decades, including chemical processes such ... -
Biomolecular alterations in acute traumatic brain injury (TBI) using Fourier transform infrared (FTIR) imaging spectroscopy
( Elsevier , 2021 , Article)Acute injury is one of the substantial stage post-traumatic brain injury (TBI) occurring at the moment of impact. Decreased metabolism, unregulated cerebral blood flow and direct tissue damage are triggered by acute injury. ... -
Biomonitoring of Toxic Effects of Pesticides in Occupationally Exposed Individuals
( Elsevier , 2016 , Article)Background Workers in pesticide manufacturing industries are constantly exposed to pesticides. Genetic biomonitoring provides an early identification of potential cancer and genetic diseases in exposed populations. The ... -
Biophysical studies of the effect of high power ultrasound on the DNA solution
( Elsevier B.V. , 2014 , Article)Stability and molecular size of the DNA double helical structure were studied on an aqueous solution of DNA after exposure to high power doses of continuous wave ultrasound at frequency of 20kHz. Thermal transition ... -
Bordetella pertussis risA, but not risS, is required for maximal expression of Bvg-repressed genes
( American Society for Microbiology , 2005 , Article)Expression of virulence determinants by Bordetella pertussis, the primary etiological agent of whooping cough, is regulated by the BvgAS two-component regulatory system. The role of a second two-component regulatory system, ... -
A brief overview of RF sputtering deposition of boron carbon nitride (BCN) thin films
( Springer , 2018 , Article)A great part of interest has been paid for fabricating new materials with novel mechanical, optical, and electrical properties. Boron carbon nitride (BCN) ternary system was applied for variable bandgap semiconductors and ... -
Bromate reduction by ultraviolet light irradiation using medium pressure lamp
( Taylor & Francis , 2013 , Article)Bromate reduction in water by ultraviolet irradiation using medium-pressure lamps (UV-M) emitting light in the range of 200-600 nm has been investigated. Effects of certain experimental parameters including the initial ... -
Carbon black dispersions in surfactant-based microemulsion
( Cambridge University Press , 2018 , Article)In an attempt to introduce a novel approach to formulate carbon black (ketjen black) suspension with enhanced colloidal stability, improved flowability, and higher conductivity, ketjen black was dispersed in microemulsion ... -
Carbon Dioxide Solubility in Phosphonium-, Ammonium-, Sulfonyl-, and Pyrrolidinium-Based Ionic Liquids and their Mixtures at Moderate Pressures up to 10 bar
( American Chemical Society , 2017 , Article)Carbon dioxide solubility in four ionic liquids (ILs) of different families with different cationic-anionic groups (tributylmethylphosphonium formate, butyltrimethylammonium bis(trifluoromethyl sulfonyl) imide, ...