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Главная Коллекция "Otherreferats" Химия
  • 121. Dependence of ZnO morphology on Zn2+ concentration

    A controlling the morphology of zinc hydroxide and zinc oxide at room temperature without using any template or surface ligand. Identify the precipitated materials. Dependence of ZnO morphology on Zn2+ concentration. Scanning electron microscopy of zinc.

    статья (399,7 K)
  • 122. Deposition and characterization of NiCoCrAlY coatings by multi-chamber detonation sprayer

    Consideration in this study, multi-chamber detonation sprayer was applied for deposition of NiCoCrAlY powder coatings on nickel base superalloy JS6U. The coating microstructures and phase compositions were characterized using SEM, OM and XRD techniques.

    статья (558,7 K)
  • 123. Depth profiling of the near-surface layer for Ge33As12Se55 thin films

    Depth profiles of the near-surface region and chemical composition for amorphous films deposited from Ge33As12Se55 bulk glasses and their changes resulting ageing under ambient conditions have been studied by the methods of Auger electron spectroscopy.

    автореферат (109,2 K)
  • 124. Design of metal sulfide electrode for hydrogen production by electrolysis

    Hydrogen evolution reaction (HER) is the cathodic hydrogen evolution reaction in electrolytic cell, but the hydrogen evolution catalytic properties of electrode materials best remains is the precious metal catalyst, has become the research hot spot.

    статья (3,0 M)
  • 125. Desulphurization and usage of medium-metamorphized black coal. Determination of the optimal conditions for oxidative desulphurization

    The conditions of a reaction between pyrite medium-metamorphized coal and air-steam mixture in the kinetic area. Development of experimental-statistical mathematical models. Determination of the optimal factors for the oxidative desulfurization of coal.

    статья (445,2 K)
  • 126. Determination of aminoglycosides in food by fluorescence polarization immunoassay

    Determination of aminoglycoside antibiotics (gentamicin, kanamycin, amikacin, neomycin) in food products by the method of polarization fluorescent immunoassay. Influence of the size of a fluorescent molecule on the degree of polarization of fluorescence.

    статья (332,9 K)
  • 127. Determination of the period of the saffron collection according to the contents of protocrocine

    The carotenoid nature of the glycoside is protocrocin. Study of the dependence of the chemical composition of a saffron product on its growing season, time of collection, storage and processing. Accumulation of protocrokin and its transformation.

    статья (361,8 K)
  • 128. Development and investigation of emulsion form for antiepileptic drug carbamazepine

    Obtain a carbamazepine nanoemulsion for intravenous administration. The nanoemulsions were evaluated concerning droplet size, zeta potential and drug content. Preliminary studies of anticonvulsant activity for resulting formulation were carried out.

    статья (315,0 K)
  • 129. Development of ecological pure production of sulphuric acid propylene hydration

    The use of cation exchanger as a catalyst for the esterification reaction of diisopropyl ether absolutes - a method for creating waste-free technology for the production of isopropyl alcohol. The physical-chemical properties of received esterificates.

    статья (9,3 K)
  • 130. Dielectric relaxation in Sr(Co1/3Nb2/3)O3 compound – a candidate for microwave applications

    Synthesis ferroelectric compounds Sr(B1/3Nb2/3)O3 by solid state reaction technique. Consideration of the correlation between the dielectric response and transport behavior. Emprovement dielectric material properties. Motion energy storage devices.

    статья (905,4 K)
  • 131. Dissolution kinetics of gold in cyanide solutions on the basis of plasma-chemically "activated" water

    Considers an opportunity and the effectiveness of using the solutions treated with low-temperature non-equilibrium contact plasma in order to intensify dissolution of metal gold in cyanide leaching solutions. Comparison of activation energies of the gold.

    статья (536,8 K)
  • 132. Diterpens. Cyclohexane derivatives. A group vitamins. Triterpens. Licorice drugs – glyceram, bioslastilin, glyderinin

    Classification of terpenes. Diterpenes - organic compounds of terpenes group consisting of 4 isoprene units. Properties. Application. Drugs of the triterpene saponins. Gliderinin. Bioslastilin. Physical and chemical properties of triterpene saponins.

    презентация (3,1 M)
  • 133. Effect of docetaxel and human beta-defensin-2 on proliferation of anaplastic thyroid carcinoma KTC-2 cells

    Study the effect of ultra-low concentrations of docetaxel and recombinant human beta-defensin-2 in the nanomolar range clusters on the proliferation and viability of anaplastic thyroid carcinoma KTC-2 cells. Expression of cell cycle regulatory factors.

    статья (229,8 K)
  • 134. Effect of Structural Relaxation on the Metal–Insulator Transition in Heavily Underdoped YBa2Cu3O7-b Single Crystals

    The study of the effect of structural relaxation on the basal-plane conductivity of heavily high-Tc single crystals. Increased oxygen deficiency, increased localization effect. The transition metal–insulator transition point toward higher temperatures.

    статья (426,7 K)
  • 135. Effect of substrate temperature on the structural properties of CdxZn1-xTe films grown by close-spaced sublimation method

    Study films of CdxZn1-xTe solid solution, obtained by a close-spaced vacuum sublimation technique under different temperatures of glass substrate by energy dispersive analysis of X-rays, scanning electron microscopy and X-ray diffraction methods.

    статья (528,9 K)
  • 136. Effect of surface phenomena on selective separation properties of liquid crystal stationary phase

    The distribution of contribution of adsorption and dissolution to retention volume of individual components in gas-liquid chromatography as dependent on the amount of liquid crystal stationary phase deposited on solid support and on the temperature.

    автореферат (92,9 K)
  • 137. Effect of the low-molecular additives nature on the adhesive properties of based on polyvinylpirolidone compositions

    The influence of low-molecular additives on the composition of polyvinylpyrrolidone with hydroxyethyl compositions. Adhesion based on the angle of wetting compositions. The effect of different additives on the adhesive strength of the adhesive joint.

    статья (138,8 K)
  • 138. Effects of surfactants on the properties of mortar

    The chemical structure of the polymer latexes. The influence of surfactants on the drip solution. The mechanism of anionic with a negative charge in the screed, acting as air entrainment. Hydrogen bonding, water absorption and compressive strength.

    статья (1,2 M)
  • 139. Electrical and electrochemical properties of Li[Ni0.5Co0.25Mn0.25]O2 cathode material

    Development of a method of mixing the hydroxides for the preparation of Lі[Ni0.5Co0.25Mn0.25]O2 from the respective products. Determination of average grain size, the measurement of impedance. Study of electrochemical properties using cyclic voltammetry.

    статья (387,6 K)
  • 140. Electrochemical degradation of methyl tert-butyl ether

    Study of the electrochemical oxidation of methyl tert-butyl ether on micromodified and composite lead dioxide anodes. Anodic conversion of MTBE and electrochemical processes of water oxidation with formation of hydroxyl radicals and molecular oxygen.

    статья (432,7 K)
  • 141. Electrochemical deposition of silver in presents of thiouria

    In this study, the electroplating method used silver on copper ores, which is a coating method by forming a coating on a surface using silver salts as a source of silver and potassium nitrate as a catalyst source. Formation of a complex with a silver ion.

    статья (130,2 K)
  • 142. Electrodeposition of functional cobalt-silver and cobalt-tungsten alloys

    Electrodeposition of cobalt-silver and cobalt-tungsten alloys from citrate electrolyte. Characteristic of their catalytic and anticorrosive properties. Effect of the ratio of the electrolyte components depending on the composition of the cobalt alloy.

    статья (380,8 K)
  • 143. Electrosynthesis of poly (selenophene-co-thiophene) films in boron trifluoride diethyl etherate/ethyl ether

    Effect of polymerization copolymers on selenophenes and thiophenes. Analysis of electrosynthesis of selenofen-thiophene copolymers at a constant electrode potential. Stability of oxidation-reduction activity in electrolyte solution based on acetonitrile.

    статья (244,2 K)
  • 144. Emergency chemically hazardous substances

    Chemical hazards and toxic substances pose a wide range of health hazards (such as irritation, sensitization, and carcinogenicity) and physical hazards (such as flammability, corrosion, and explosibility). Explosives. Gases. Flammable liquids, solids.

    презентация (285,8 K)
  • 145. Enamines: synthesis, structure, and reactions

    The structural, theoretical and synthetic properties of enamines which act as important intermediates in many syntheses of organic compounds containing oxygen. Cycloaddition reactions, electrochemistry, hydrolysis and biochemistry of metalated enamines.

    книга (13,0 M)
  • 146. Evolution of cavitation activity incarbonate dioxide aqueous solution in the process of ultrasonic treatment

    The ultrasonic cavitation activity in aqueous solution of carbon dioxide was studied. The ICA-3M cavitometer was used for cavitation activity estimation. Erosion rate was estimated in a number of regimes. The spectra of cavitation noise were recorded.

    статья (1,3 M)
  • 147. Evolution of Fe-Pd solid solution composition in one-step metal-carbon nanocomposite fabrication method

    The one-step procedure of simultaneous preparation of polyacrylonitrile-based carbon support and Fe-Pd bimetallic nanoparticles. The effect of synthesis conditions on the metal-carbon nanocomposite structural characteristics. The crystallite size.

    статья (400,5 K)
  • 148. Eлектрохiмiчна регенерація водних розчинів перйодату натрію у синтезі діальдегід крохмалю

    Електрохiмiчна регенерація розчинів у виробництві оксидованих полiсахаридiв. Процес окислення йодат-іонів до перйодат-iонiв на платинових та дiоксидсвинцевих титанових анодах. Ефективність анодних матеріалів. Ітенсифiкуючий вплив домішків хлорид-iонiв.

    автореферат (60,2 K)
  • 149. Features of Ni/NiO nanopowder synthesis by thermal decomposition of nickel acetate amines: effect of annealing temperature and duration and ammonia content on powder composition and particle size

    The using nickel powders as electrode materials in multilayered ceramic capacitors. Development of technology of Ni/NiO nanopowders obtaining with particle size of 20 nm and minimal impurities content. The analyses of powder microstructure the products.

    статья (522,0 K)
  • 150. Fillers and additives in plastics

    Plastic additives as a wide range of chemicals used by resin manufacturers, compounds and manufacturers to improve the properties, processing and characteristics of polymers. Features of their chemical composition and conditions of effective use.

    статья (14,4 K)

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