Volume 32, Number 6
Volume 32, Number 6
Evaluation of the Organic Carbon Content in the Low-Permeability Shale Formations (As in the Case of the Khadum Suite in the Ciscaucasia Region)
Introduction The non conventional HC resources in the low-permeability shale formations are associated with the regions of immature potentially “rich” and “very rich” oil source rocks development that are at the initial stage of...
Read MorePartial Characterization of Chitosanase from Digestive Tract of Channastriata
Introduction Chitin is the second largest polysaccharide after cellulose which has the chemical formula of poly (2-acetamide-2-dioksi-β-D-Glucose) with β- glycosidic (1.4) linkage connecting each unit. The chemical structure of chitin is similar to cellulose,...
Read MoreDistribution of Rare Earth Metals in Technogenic Wastes of Energy Enterprises (Results of the Laboratory Studies)
Introduction Today REM and noble metals (NM) are one of the most deficient types of mineral raw materials in Russia because of the fact that their traditional fields are either abandoned or located at...
Read MoreStudy of the Nuclear Magnetic Resonance of Ni/Al + tox O2/Ni Nanoscale Thin Films
Introduction In recent years, the tunneling magneto resistance effect have been studied by many researchers. This effect can be found in multilayer metal-insulator-metal nanostructures in which a current flow from one ferromagnetic electrode across...
Read MorePhysical Properties and Chemical Composition of the Rice Husk and Dust
Introduction Rice dust is formed during the processing of rice grain at a rice-processing plant as a result of the discharge upon the receipt of raw rice from vehicles, removal of impurities, sorting by...
Read MoreStability indicating RP-HPLC Method for Simultaneous Determination of L- Methyl folate and Escitalopram in Bulk and Pharmaceutical Formulation
Introduction Levomefolicacid(L-Methyl folate) Levomefolic acid (fig- 1) was primary biologically active form of folic acid used at the cellular level for DNA reproduction. A-vitamin (B9) essential to human health and function. One of its most notable functions...
Read MoreThe Influence of Fertilizer Systems on the Content of various forms of Po-tassium and Nutrition Mode of Humus
Introduction The level of soil fertility is a decisive factor in obtaining of high and stable yields of agricultural crops. With the influence of fertilizers in the arable layer of soil increases the content...
Read MorePhysico-Chemical Studies of a New Zr-doped BaBeTiO3 System
Introduction Since the discovery of the phenomenon of ferroelectricity, barium titanate BaTiO3 was a standard material of the ferroelectric perovskite family. This compound has long been used in many industrial sectors such as electromechanical,...
Read MoreAmino Acid Composition and Physicochemical Properties of Bitter Lupine (Lupinustermis) Seed Flour
Introduction Protein-energy malnutrition is a widespread problem throughout the world and has both health and economic consequences. It is the most available deficiency disease especially in third world countries [1].The present feature of population...
Read MoreKinetic Modeling of Photocatalytic Degradation of Alachlor using Tio2 (Degussa P25) in Aqueous Solution
Introduction The intensive use of pesticides has been one of the factors contributing to high crop yields and lower commodity prices. However there is increasing concern about the impact of pesticides on human health...
Read MoreHeat-Resistant Composite Materials Based on Polyimide Matrix
Introduction Due to the increasing demand for structural materials, the most widely used in current technology (primarily aerospace), new chemical structures having a certain range of physical properties are constantly developing. The extensive use...
Read MoreOptimization of Calcium Sulfate Precipitated in the Laminar Flow Pipe Through Response Surface Modeling of Temperature, Ca2+ Concentration and Citric Acid Additives
Introduction Calcium sulfate (i.e., gypsum, anhydrite and hemi-hydrate), is commonly formed as scale minerals in pipes of industries ranging from oil and gas to desalination. Scaling of calcium sulfate occurs when the surfaces of...
Read MoreStudy on Adsorption of Malachite Green by Date Palm Fiber
Introduction Color removal from industrial effluents hasbeen a subject of investigation because of its potential toxicity. Malachite green (MG) is one of the dyes that is extensively used in the textile industry. It exhibits...
Read MoreSynthesis of Diamino Benzoquinones using Facile and One-Pot Chemical Oxidative Method
Introduction Of the nuisances the chemists are facing in organic chemistry is to develop some simple andefficient chemical processes and methods for synthesizing the extensively applied organic compounds from easily available reagents. Quinones based...
Read MoreThe Preparation of the Quick-Drying Bitumen Emulsion for the Protection of the Road Surface Asphalt Concrete Layer
Introduction The intensification of traffic and the growing number of a road transport in the Russian Federation lead to a significant increase in load on the transport infrastructure and, in particular, on the asphalt...
Read MoreKinetics and Thermodynamics of Oxidation of Benzhydrol by Tetrabutyl Ammonium Bromochromatein the Presence of Oxalic Acid
Introduction Oxidation is a key reaction for different organic synthesis. Chromium(VI) compounds have proved to be versatile reagents capable of oxidizing almost every oxidiasable functional group.A number of new chromium(VI) containing compounds, with heterocyclic...
Read MoreSynthesis and Antibacterial Activity of 2-Monolaurin
Introduction Monoacylglycerol is a class of lipid compounds which have an important role in the food, cosmetics and pharmaceutical industry1. Monoglyceride containing medium chain fatty acids has been reported to play important role inmedical...
Read MoreReload Purified Melittin and Lactoferrin on Perfluorooctyl Bromide Nanoparticles (PFOB-Nps) and Examine the Distribution of Particle Size, Zeta Potential and Confirmation of Their Accession on the Nanoparticles Via Tryptophan Fluorescence and Circular Dichroism (CD) and its Anti-Cancer Effects on Human Breast Cancer Cell Line MCF7
Introduction Despite great advances in cancer treatment, a significant tendency for new anticancer agents due to the increased resistance of cancer cells to anticancer drugs, is currently being expanded. Cationic antimicrobial peptides can be...
Read MoreSilver Nanoparticles Modification of Ultra High Molecular Weight Polyethylene in Non-Aqueous Medium
Introduction One of the objects of modern medicine is the creation and improvement of materials for joint implant production (coxas, knee joints, spinal bones, dentofacial joints) for improvement their tribological and antimicrobic properties. Nowadays...
Read MoreA Novel Quantitative Method for the Simultaneous Assay of Rifampicin (RIF), Isoniazid (INH), Ethambutol (EMB), and Pyrazinamide (PYP) in 4-FDC Tablets
Introduction Tuberculosis (TB) is a global infectious disease and a leading cause of death the world over. The disease afflicts about a third of the world’s population, killing more than 1.3 million people annually1....
Read MoreAdsorptive Cathodic Stripping Voltammetric Method with Alizarin for the Simultaneous Determination of Cadmium, and Zinc in Water Samples
Introduction Heavy metals can be divided into two types. The first type is essential heavy metals, in which its presence in a certain amount is needed by living organisms, but in excessive amounts can...
Read MoreDevelopment and Optimization of Producing 3,3′,4,4′-Benzophenonetetracarboxylic Dianhydride
Introduction It is necessary to improve polymers due to the extensive use of polymeric materials in terms of maintaining their properties during heating, increase of the heat, thermal and radiation stability of the polymers...
Read MoreA New Kaempferol Glycoside with Antioxidant Activity from Chenopodium ambrosioides Growing in Egypt
Introduction The genus Chenopodium constituted of approximately 120 species, 45 of which are known to be distributed all over the world, and nine of which are distributed in Egypt1,2. Different species belonging to this...
Read MoreChemistry Wastewater Treatment of El-Oued City (South-East of Algeria) by Utilization of Typha Latifolia
Introduction The purification of wastewater by use of plants is a technique for the treatment that has been experiencing since soon a thirty year a wide success of by the world. This technique of...
Read MoreThe Solvent Extraction of Cadmium From Phosphoric Acid Solution By3-Methyl-Quinoxaline-2-Thione in Toluene Diluent
Introduction Due to their harmful effects, heavy metals are a major threat to ecological environment, food safety and agriculture sustainable development. As a result, these elements are not suitable in nature that various measures...
Read MoreDetermination Trace Levels of Vitamin C and Folic Acid in Urine Sample by Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction Method Coupled HPLC-UV
Introduction Vitamin C and folic acid are water-soluble vitamins, necessary for a healthy diet. They are involved in tissue growth and normal cell function. They also serve as cofactors for at least eight enzymatic...
Read MoreThe Effect of Calcination Temperatures on the Activity of CaO and CaO/SiO2 Heterogeneous Catalyst for Transesterification of Rubber Seed Oil in the Presence of Coconut Oil as A Co-Reactant
Introduction In response to increased need for renewable energysource, liquid fuel in particular, biodiesel continues to gain progressive share in the current global energy market. However, it should also be acknowledged that relatively higher...
Read MoreBiodiagnostics of the Azov Seasolonchaks Condition Atchemical Contamination
Introduction In studies on chemical contamination of soils, little attention is paid to disguised solonchaks. This is due to the low significance of disguised solonchaks for agriculture and the lack of significant pockets of...
Read MoreNanocrystalline Mixed Ligand Complexes of Cu (II), Ni (II), Co (II) with N, O Donor Ligands: Synthesis, Characterization, and Antimicrobial Activity
Introduction A lot of attention is being given on the study of simple transition metal complexes and their biological activity1. The N, O donor ligands have been used as chelating agents in the field...
Read MoreEnvironmental Aspects of Use of Impregnating Compositions for Protection the Asphalt Concrete Road
Introduction Now growth and development of transport infra structure is followed by emergence not only obvious benefits, such as increase in the gross internal income of the country, efficiency of work of all services,...
Read MoreSynthesis Nano Dendrimer Supramolecular with Melamine Core
Introduction The first dendrimers, named “cascade” molecules, were produced by Vögtle et al. in 1978 [1]. Dendrimers are constructed in a stepwise manner through repeatable synthetic steps [2]. Each repetition cycle forms an additional...
Read MoreOptimization of A Bitumen Binder Modification Process Under Continuous Optimization of a Bitumen Operation Conditions
Introduction Asphalt concrete is the most practical and widespread paving material. Although it has many benefits, some drawbacks still exist: cracking upon time, pavement scaling, spalling etc. Heavy traffic, overloaded trucks and climatic factors...
Read MoreThermal Properties of Polyimide Composites with Nanostructured Silicon Carbide
Introduction Aromatic polyimides (PIs) are known for their high thermal stability and chemical resistance as well as high mechanical properties [1]. Although there are many high temperature stable polyimides, there is a growing demand...
Read MoreCholesterol Interactions with Fatty Acids and DMPC Phospholipids of Liver Membranes
Introduction In contrast to the diversity of phospholipid types, the cells of mammals contain one main sterol, cholesterol, that is exactly required forlivability and cell proliferation1, 2. Sterols vary from the other membrane bilayer...
Read MoreSynthesis of Sorbitan Ester Stabilized Uniform Spherical Silver Nanoparticles
Introduction In recent years, a great interest in metal nanoparticles with controlled size and size distribution has been observed. Because of unusual properties of nanostructured silver particles, these nanoparticles have been the subject of...
Read MoreSynthesis and Investigation of Electrical Properties of Nanopowders Produced by Spark Erosion of Silver Electrodes in the Air
Introduction Functional nanoparticles are promising materials having a great potential of application in various technologies1,2. The spark discharge is a new challenging method for producing ultrafine particles with the size less than 10 nm...
Read MoreThermodynamics and Mechanism of Silicon Reduction by Carbon in a Crucible Reaction
Introduction Metal melting is a complex physical-chemical process of a metal’s simultaneous heating, melting, and overheating over melting temperature and interaction with the gas phase and the reaction products, which change from the metallic...
Read MoreQuantitative Analysis of L-Dopa (L-3,4-Dihydroxyphenylalanine) Content in Extracts of Various Products from Velvet Bean (Mucuna pruriens (L.) DC.) Tempe Processing
Introduction Velvet bean (Mucuna pruriens (L.) DC.) is commonly known as koro benguk in Indonesia1 and cowhage or atmagupta in India2. In taxonomy, velvet bean belongs to the family Fabaceae (Leguminoceae)3. It is the...
Read MoreEvaluation of Apoptosisrate of Pegylated nanoliposomal oxaliplatin in Breast Cancer MCF-7 and MDA-MB-231 cells
Introduction Cancerous diseases are considered as major causes of Deaths and mortality in the world and at present, breast cancer isone of the cancers causing death in womenpopulation. There are several ways for curing...
Read MoreTin Oxide Nanoparticles Produced by Spark Ablation: Synthesis and Gas Sensing Properties
Introduction Currently, the metal oxide semiconductor gas sensors are widely used for gas analysis1–4. They are relatively inexpensive compared to other sensing technologies and benefit from high material sensitivity and quick response times1,2. The...
Read MoreSynthesis and Characterization of Soy Lecithin Coated Magnetic Iron Oxide Nanoparticles for Magnetic Resonance Imaging Applications
Introduction Magnetic Iron oxide nanoparticles (SPION) with appropriate surface chemistry have been attracted a lot of interest for their numerous applications [1-3] such as magnetic resonance imaging contrast enhancement [4,5], immunoassay, detoxification of biological...
Read MoreBiosorption Kinetic Models on the Removal of Congo red onto Unripe Calamansi (Citrus microcarpa) peels
Introduction Dyes are colored organic compounds which are used in industries that produce textiles, paper, and distilleries. As a result of incomplete binding with fibers during the dyeing process, dyes are found in highly...
Read MoreAdsorption Study of Pb(II), Cd(II), Hg(II) and Cr(III) Onto Calix [4] Resorcinarene Derivative
Introduction A great concern has been still given to the heavy metal contamination in aquatic environment. Heavy metals were notoriously known due to their toxicity and bioaccumulation properties. In addition, several health damage were...
Read MoreEuphorbia Helioscopia Inhibits The LPS-Induced Pro-Inflammatory Response in RAW 264.7 Cells Via The NF-Κb and MAPK Pathway
Introduction Lipopolysaccharide (LPS)-induced activation of murine RAW 264.7 cells results in the production of pro-inflammatory cytokines including PGE2, IL-6, TNF-α, and IL-1β. Cytokine production is regulated by cellular signaling events, such as the NF-κB...
Read MoreMicrostructure and Optical Properties of Composites Consisting of Nanoporous Stretched Polypropylene Doped with Liquid Crystals and Quantum Dots at a High Concentration
Introduction Designing organic–inorganic hybrid polymer composites has been a remarkable challenge in recent decades. Such composites combine good mechanical properties of polymer matrices with unique optical, electrical, and other characteristics of the inorganic dopants...
Read MoreImpedance Spectroscopy Study of Carbon Nanotube–Glass Microfiber Composites
Introduction Carbon nanotubes (CNTs) are the unique material having great potential of application in many fields of science and technology. Structurally, CNTs can be classified as multiwalled CNTs (MWCNTs) and single-walled CNTs (SWCNTs), which...
Read MoreThe Electrochemical Behavior of Titanium Improved by Nanotubular Oxide Formed by Anodization for Biomaterial Applications: A Review
Introduction General Titanium and its alloys are exploited in several technological fields ranging from aerospace and chemical industries to bone implant materials, because of their excellent properties and efficient performance in widespread applications [1,2]....
Read MoreIssues of Carbothermic Synthesis of Submicron and Nanostructured Boron Carbide (A Review)
Introduction Boron carbide takes a special place among the superhard ceramic materials. This substance has a set of unique properties such as extremely high hardness, wear resistance, thermal, chemical and radiation stability. Due to...
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