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коллекция "otherreferats"
Главная Коллекция "Otherreferats" Химия
  • 151. Research of polycomplexes’ membranes on the basis of sodiumcarboxymethylcellulose

    Study of the reaction of polyelectrolytes. Research of the structure and membrane properties of sodium carboxymethylcellulose and urea-formaldehyde oligomer. Development of technology for manufacturing biocompatible polymeric materials for medicine.

    статья (88,7 K)
  • 152. Review of graphene properties in view of its use as a substrate for matrix-free mass spectrometry

    The graphene basic properties is given. The possible role of intrinsic and deliberately induced structural defects in electronic and chemical properties of graphene substrates. Optimized geometric structures for the Stone-Wales defect functionalized.

    статья (337,5 K)
  • 153. RR-винная кислота и её производные

    Описание свойств RR-винной кислоты и её производных, в качестве лигандов различных металлов. Расширение познаний в области химии. Составление представлений о гидролизе органических соединениях. Экспериментальное получение производной винной кислоты.

    реферат (510,8 K)
  • 154. S (Сера), Se (Селен), Te (Теллур) – положительные степени окисления

    Примеры реакций с участием SH-формы гидросульфит-иона. Реакции получения кислот (анионов). Окислительно-восстановительные свойства соединений серы (IV). Строение анионов политионовых кислот, особенности ионной жидкости. Катионные формы теллура и селена.

    презентация (1,7 M)
  • 155. Silver Nanoparticles as a New Generation of Antimicrobial Prophylaxis

    Quantitative evaluation of the antimicrobial ability of silver nanoparticles in comparison with silver ions, evaluation of the antimicrobial effectiveness of silver nanoparticles when introduced into water-soluble paints, cotton fabrics, fibrous sorbents.

    статья (1,9 M)
  • 156. Social insurance in the Russian Federation the impact of non-nucleotide insertions on thermal stability of DNA G-quadruplexes

    The formation of non-canonical DNA structures as one of the most important elements of gene expression regulation. Characteristic specific features of the basic oligonucleotide sequences and thermal stabilities of the G-rich polynucleotide fragment.

    статья (45,7 K)
  • 157. Sodium: property and application

    Chemical properties of sodium. Sodium compounds are important to the chemical, glass, metal, paper, petroleum, soap, and textile industries. History of appearance of sodium. The serum sodium and urine sodium.

    реферат (26,3 K)
  • 158. Solid solutions and thermal transformations in nanosized systems

    Synthesation, physicochemical properties of nanopowders LaPO4-LuPO4-H2O and LaPO4-YPO4-H2O. Investigation of thermal behavior orthophosphate nanosized solid solutions. Discussion results of the experiment, solubility and melting temperatures of systems.

    статья (648,9 K)
  • 159. Sorption of vanadium (V) ions by chemically modified chelating adsorbent based on maleic anhydride styrene copolymer and its application to industrial water samples

    The use of a sorbent to study the preliminary concentration of V (V) ions in the liquid phase. Establishment of optimal conditions for sorption. Influence of the concentration of metal ions and the time of reaching chemical equilibrium on sorption.

    статья (1,6 M)
  • 160. Spectral and basic properties of flavones in the ground and excited states

    Determined of the dissociation (deprotonation) constants of flavones in water-methanol mixtures. Research of features hydroxyflavones, which have been the convenient models for exploration of the intramolecular proton transfer in the excited state.

    статья (281,8 K)
  • 161. Spectrophotometric method for palladium determination using 5-hydroxyimino-4-imino-1,3-thiazolidin-2-one and application to the analysis of intermetallides

    The application of a new, simple and rapid spectrophotometric method to the determination of palladium in the intermetallides Yb40Pd38Sn22 and Yb40Pd40Ga20. Interaction of palladium(II) ions with 5-hydroxyimino-4-imino-1,3-thiazolidin-2-one at pH = 5.0.

    статья (105,0 K)
  • 162. Structural peculiarities of the [(2-amino-5-ethyl-1,3,4-thiadiazole)CuCl] complex

    Crystals of the [Cu(C4H7N3S)Cl] (1)-complex were synthesized by solvothermal reaction of 2-amino-5-ethyl-1,3,4-thiadiazole (C4H7N3S) with CuCl in hydrochloric acid solution, and studied by X-ray diffraction. 3D hydrogen-bonded framework in complex.

    статья (370,1 K)
  • 163. Structural properties of the SnxSy films obtained by the thermal vacuum Co-evaporation

    The temperature dependence of the sulfur and tin vapor. Influence of growth conditions on the morphology of the surface and structural properties of the films with the stoichiometric composition and substrate temperature on their chemical composition.

    статья (574,5 K)
  • 164. Substantiation of the composition and methods of quality control for "Genta" ointment with the succinyl tannin antiresistant component

    Analysis of the results of the design and selection of compounds antimicrobial ointments containing gentamicin as the main active ingredient gallotannin and succinyl as a component of antiresistant against multiresistant strain of Pseudomonas aeruginosa.

    статья (328,0 K)
  • 165. Sulfur control in ultra-low sulfur steel refined by ladle furnace-vacuum degassing

    Sulfur - substance that be in the most kinds of steel. Research of influence of ladle furnace reductants in the desulfurization process. Control ultra-low sulfur steel. The chemical degassing in the ladle furnace-vacuum. Maintaining a low sulfur content.

    статья (185,1 K)
  • 166. Super deep penetration - new method of nanoreinforced composites producing based on polymer matrixes

    Effect of the method of mixing isoprene rubber with nanofillers on the properties of nanocomposites. The thermostability of rubber based on isoprene elastomer with MMT. The physical-mechanical properties of rubber based on isoprene elastomer (SRI).

    статья (237,8 K)
  • 167. Surface Plasmon Enhanced Photoluminescence of Rhodamine 6G on Au Nanoparticles 2D Array: Temperature Effects

    Influence of temperature on the photoluminescence of rhodamine deposited on array of the gold nanoparticles was studied. The factor of surface plasmonic enhancement of rhodamine luminescence. Electron-phonon scattering and thermal expansion of the gold.

    статья (541,9 K)
  • 168. Synthesis and antiviral activity of [(9-R1-10-R2-3-R-2-OXO-2H-[1,2,4]-triazino[2,3-c]quinazolin-6-YL)thio] acetamides derivatives with the fragments of carcass amines

    Alkylation of potassium 9-R1-10-R2-3-R-2-oxo-2Н-[1,2,4]triazino[2,3-с]quinazolin-6-thiolates by N-cycloalkyl-(cycloalkylaryl-)-2-chloracetamides. Analizes of indicators of the antiviral activity of compounds 3.2 and 3.14 against influenza type A H3N2.

    статья (530,2 K)
  • 169. Synthesis and biological activity of 3,4-dimethylphenyloxamoyl aminoacids and their salts with D(+)-glucosamine

    Convenient method of synthesis of optically active oxamoylaminoacids. Compounds have significant hepatoprotective, antiinflammatory and immunodepressant activities with low toxicity. Influence of investigated sudstances on rarametrs of specific immunity.

    статья (133,8 K)
  • 170. Synthesis and characterization of NA-JBW zeolite structure from metakaolin

    Obtaining JBW zeolite from hydrogels under hydrothermal conditions by alkaline reaction using NaOH as an activating agent. Orthorhombic space group Pmc21 with unit cell parameters, X-ray powder diffraction. Comprehensive study of the synthetic zeotype.

    статья (748,3 K)
  • 171. Synthesis and crystal structure of an Ag(I) complex of composition (C9H7N(C3H5))2[AgBr2]Br(H2O)2

    Coordination behavior of Ag (I) with cations of N-allyl quinolinium. Synthesis of N-allyl quinolinium bromide. Determination of the structure of the x-ray crystal. Bromine ions of the second crystallographic type. Study silver nitrate compounds.

    статья (428,7 K)
  • 172. Synthesis and diuretic activity of 2-(5-(phenoxymethyl)-4-r1-1,2,4-triazole-3-ylthio)acetic acids and their salts

    Drugs based on the 1,2,4-triazole have a wide spectrum of biological activities. They are effective cardioprotectors, hepatoprotectors, anti-oxidants. Compounds with strong diuretic activity have been found among the newly synthesized compounds.

    статья (377,6 K)
  • 173. Synthesis and electrooptical properties of side-chain polymethacrylates and polycomplexes containing azobenzene moieties with different length Spacers

    The structure of the metal-containing azopolymers with electro-optical properties depending on the length of the spacer. Effect of electric field on absorption of metal-containing azopolymers. Reorientation of the dipole moments azobenzene groups.

    статья (168,1 K)
  • 174. Synthesis and modification of 2-(coumarin-3-yl)-3,4,5,6,7,8-hexahydropyrido [4',3':4,5]thieno[2,3-d]pyrimidin-4-ones

    Consideration the result of modification of 2-iminocoumarin-3-carboxamides with 2-amino-4,5,6,7-terahydrothieno[2,3-c]pyridin-3-carboxamides the novel 2-(coumarin-3-yl)-3,4,5,6,7,8-hexahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-one derivatives.

    статья (111,4 K)
  • 175. Synthesis and toxicity of Di-Na_salt of 2-(pyridine-4-iltio) succinic acid

    Search of bioactive substances containing in the molecule a heterocycle and a deputy with high antioxidant properties such as succinic acid. Antibacterial and cytotoxic action of Di-Na-salt. Methods of di-Na-salt of 2-(pyridine-4-iltio)succinic.

    статья (548,5 K)
  • 176. Synthesis of benzylidene and azocontaining polymers for photophisical application

    The polymers built with the use of the free radical polymerization of methacrylic monomers incorporating an azobenzene side-group and monomers with benzylidene fragments. The results of photochemical and optical activities of the corresponding elements.

    статья (288,8 K)
  • 177. Synthesis of new n-aryl-2-[(4-amino-4H-1,2,4-triazolo-[4,3-b]pyradazin-3yl)thio] acetamide derivatives

    Prepared of n-aryl-2-[(4-amino-4H-1,2,4-triazol-3yl)thio] acetamides by interaction of amino-1,2,4-triazolyl-3thiol with n-aril-2-chloroacetamides and formation of n-aryl-2-[6,8-dimethyl[1,2,4]triazolo[4,3-b]pyradazin-3-yl)thio]acetamide derivatives.

    статья (93,9 K)
  • 178. Synthesis of Perfluoroalkyl Heterocycles Using Perfluoroolefins Containing a Reactive Group at the Double Bond

    Reactions of Thiocyanate and Isothiocyanate Derivatives of Fluoroolefins with N-Nucleophilic Reagents. The Influence of the N-Nucleophile on the Construction of Six-Membered Heterocycles. The Use of Fluoroolefins with a Carbonyl-Containing Substitutent.

    статья (1,2 M)
  • 179. Synthesis of some novel thiazolo[4,5-b]pyridines and their tuberculostatic activity evaluation

    The efficient synthetic protocol for aminomethylation proceeding was developed which led to obtaining a series of novel 3-(phenylamino)-methyl derivatives of 5,7-dimethyl-6-phenylazo-3Н-thiazolopyridin-2-one. The conditions for aminomethylation reaction.

    статья (120,4 K)
  • 180. The biological activity of 4-thioquinolines

    Determination of biological activity of newly synthesized physiologically active substances. Study of antimicrobial activity, inhibits the development of gram-positive and gram-negative microorganisms. The features of systematic studies of 4-ticinonline.

    статья (613,0 K)

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