Browsing Chemistry by Title
Now showing items 14-33 of 106
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Biophysical EPR Studies Applied to Membrane Proteins
(2015-11)Membrane proteins are very important in controlling bioenergetics, functional activity, and initializing signal pathways in a wide variety of complicated biological systems. They also represent approximately 50% of the ... -
Bubble Formation in Helicoidal DNA Molecules
(2016-11)Wave interaction is addressed the framework of the helicoidal Peyrard-Bishop model of DNA. The model is first reduced to a set of coupled nonlinear Schrodinger equations via the multiple scale expansion. Modulational ... -
Cancer Risk Due to the Natural Radioactivity in Cigarette Tobacco
(Scientific Research Publishing, 2016-07)Thirty-one samples of cigarettes have been collected from local markets of different types of origins. The samples were selected according to a survey distributed to smokers by paper and digital survey to see the most ... -
Cation Sensing of Pyridoxal Derived Sensors Towards Fe (II) Ion in Pure Aqueous Solution
(2017-12)A novel sensor (L) was synthesized using Schiff base reaction of pyridoxal with orthophenylene diamine and was characterized by various spectroscopic techniques such as FTIR, 1H NMR and Mass spectrometry. The cation ... -
The Chain Reaction of Atmospheric Nitrogen Oxidation, Initiated by an Electric Discharge in Air
(2015-11)The data, concerning to the nitrogen oxidation reaction, initiated by electrical discharge, are reviewed in this article. The reviewed data lead to conclusion that critical concentrations of NO molecules and NO3 radicals ... -
Characterization and Evaluation of Antibacterial Activities of Chemically Synthesized Iron Oxide Nanoparticles
(Scientific Research, 2012-12)The iron oxide nanoparticles have been synthesized in co-precipitation method using aqueous solution of ferric and ferrous ions with sodium salt. The synthesis of iron-oxide nanoparticles were validated by UV-Visible ... -
Characterization of Some Hydrogels Used in Water Purification: Correlation of Swelling and Free-Volume Properties
(Scientific Research, 2015-07)In this study, the main objective is to develop a good chelation and ion exchange hydrogel. This hydrogel is obtained by polymerization of dimethyl amino ethyl methacrylate (DMAEMA) and acrylic acid (AAc) by gamma ... -
Chemistry in Second Life
(Springer Open, 2009-10)This review will focus on the current level on chemistry research, education, and visualization possible within the multi-user virtual environment of Second Life. We discuss how Second Life has been used as a platform ... -
Comparative Study on Heavy Metals Biosorption by Different Types of Bacteria
(Scientific Research, 2013-07)Biosorption of Cd(II), Ag(I) and Au(III) by cyanobacteria Spirulina platensis, of Au(II)—by Streptomyces spp. 19H, and of Cr(VI) and Cr(III)—by Arthrobacter species was studied by using the dialysis and atomic absorption ... -
A Comparative Study on the Physicochemical Parameters of Milk of Camel, Cow and Goat in Somali Regional State, Ethiopia
(2017-10)This research was carried out to investigate key physicochemical parameters of milk samples collected from camel, cow and goat in Jigjiga district, Eastern Ethiopia. Sixty fresh milk samples were collected purposively from ... -
Computational and Experimental Study of the Inhibition Effects of Purple Sweet Potato Leaves Extract on Mild Steel Corrosion in 1M H2SO4
(2017-08)The alkaloid and non-alkaloid fractions of purple sweet potato (Ipomoea batatas) written as AEIB and NEIB respectively were used as inhibitors in the corrosion reaction of mild steel in 1.0 M H2SO4 solutions. The corrosion ... -
Contaminants in Industrial Lean Amine Solvent and their Removal using Biopolymers: A New Aspect
(2014-03)Natural biopolymers are gaining increasing attention due to their extraordinary affinity towards adsorption of heavy metal ions. In this research, biopolymers such as chitosan and alginate were used to remove contaminants ... -
Controlled Synthesis and Characterization of Nobel Metal Nanoparticles
(Scientific Research, 2012-07)In this work, monodispersed, well-shaped platinum (3.2 - 6.4 nm), rhodium (2.4 - 5.1 nm), and palladium (3.2 - 5.3 nm) nanoparticles capped with poly(vinylpyrrolidone) (PVP) were synthesized by a polyol reduction method ... -
Correlation Between Oxidant Concentration and Morphological Properties of Silicon Nanowires Obtained by Silver-Assist Electroless Etching
(2017-03)In this work, a correlation between oxidant concentration and the morphological changes of silicon nanowires formed by a two-step silver-assist electroless etching method is established. It reveals that a textured silicon ... -
Corrosive Behavior and Physic-Chemical Characterization of Filtration Tanks
(Scientific Research, 2017-11)Most drinkable water supplied to the public in Mexico City comes from deep wells which extract water from the subsoil. Before being distributed, it is treated in steel filtration tanks. This water must be subject to ... -
Density Functional Study of Molecular Orbitals of Ferrocene and Cobaltocene Molecules
(2016-10)The electronic structure and geometry optimization of ferrocene and cobaltocene molecules are calculated using DFT/B3LYP with the basis set of 6-31G (d). The Eigen values, Eigen vector and population analysis of the molecules ... -
Detecting Ultra-Violet Radiation by Using Titanium Dioxide Nanoparticles
(Scientific Research, 2012-07)In this paper sensitivity of chemically synthesized titanium dioxide (TiO2) nanoparticles to ultra-violet (UV) radiation is investigated. For this purpose three types of ultra-violet photodetectors were fabricated, one ... -
Development of a Qualitative near Infrared Screening Method for Quality Consistency Assessment of Virgin Sunflower Oil
(Scientific Research, 2017-07)Near infrared spectroscopy offers advantages in the analysis of vegetable oils such as rapidity, relative cost-effectiveness, and usually no need for sample preparation. Virgin Sunflower oils were used as reference ... -
Differential Effect of Aluminium on Enzymes of Nitrogen Assimilation in Excised Bean Leaf Segments
(Scientific Research Publishing, 2016-06)Aluminium is a potent toxicant in acidic soils. The present study was taken up to analyze the effects of Al on enzymes of nitrogen assimilation in excised bean (Phaseolus vulgaris) leaf segments so as to gain an insight ...