• главная
  • рубрики
  • по алфавиту
  • реклама на сайте
  • обратная связь
сколько стоит заказать работу? коллекция "otherreferats"
Главная Коллекция "Otherreferats" Химия
  • 301. Structure refinements of the compounds Pr5Si3 and Zr3Si2

    Silicides of rare earth metals. Crystallographic data for a binary compound in Pr-Si and Zr-Si systems. Study of the structure of the binary compound Zr3Si2. Analytical correction of absorption. Displacement parameters and interatomic distances.

    статья (1,1 M)
  • 302. Study of processes during electrolysis of organic dye solution by means of ion-photon spectrometry

    Spectral composition and quantum yield of radiation of the excited particles sputtered by an ion beam from surfaces of the dried sediment formed on electrodes at the electrolysis of the organic dye were studied by the method of ion-photon spectrometry.

    статья (367,6 K)
  • 303. Study of the activities of new catalytic systems in the oxidative dehydrogenation reaction of methanol

    Synthesis, selection of new catalytic systems based on vanadium, molybdenum, zirconium, cobalt, iron for the conversion of methanol to formaldehyde and other valuable compounds, determination of their activity and kinetic regularities of the process.

    статья (899,7 K)
  • 304. Study the effect of ammonia addition on the mechanism and properties of electrochemical deposition of silver and nickel alloy

    Ag-Ni alloy films were electrodeposited from an ammonia solution on copper substrates at various material ratios and current densities. Investigation of electrical conductivity and pH, formation of complexes with silver and nickel. X-ray diffraction.

    статья (711,9 K)
  • 305. Studying an effect of polyurethane functionality directed stabilization of silver nanoparticles as a pathway for manufacturing modern antimicrobial materials

    To study the activity of functional groups of polyurethanes, the characteristics of the stabilization process, the formation of silver nanoparticles. The use of antimicrobial polymeric materials. The interaction of hydrogen bonds between groups of biuret.

    статья (372,7 K)
  • 306. Studying the processes of sulphates and chlorides extraction from water at low-waste water demineralization technology

    Ion exchange separation of sulfate and chloride with highbasic anionite Сl-species at regeneration solutions treatment for their reiterative use, followed with solutions’ desalination at reverse osmosis plant, and resulting concentrates’ demineralization.

    статья (314,6 K)
  • 307. 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)
  • 308. Substituted (3H-quinazoline-4-yliden)hydrazines in reaction with maleic acid anhydride

    Investigation of the influence of electronic effects of substitution of maleic anhydride with hydrazine in acetic acid. Determination of CO stretching vibrations in the middle of the strip plane strain. Characteristics of magnetic shifts quinazolines.

    статья (136,5 K)
  • 309. 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)
  • 310. 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)
  • 311. Superconducting non-centrosymmetric boride Mg10Ir19B16: crystal structure and chemical bonding

    A sample of Mg10Ir19B16, prepared from the elements by high-temperature treatment in sealed Ta containers. The chemical composition, confirmed by WDXS analysis. Electronic structure calculations and chemical bonding analysis by the ELI/ED approach.

    статья (2,1 M)
  • 312. 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)
  • 313. Syntesis of novel N-substituted 3-(aminosulfonyl)-2H-1-benzopyran-2-one derivatives and their biological activity

    Method of syntesis of novel N-substituted 3-(aminosulfonyl)-2H-1-benzopyran-2-one in the Knoevenagel condensation conditions. Studing the biological activity of derivatives against protozoan and helminth parasites, active against Onchocerca lienalis.

    статья (83,3 K)
  • 314. Synthesis a new derivatives of benzoxazole

    Using phosphoric acid and phosphor pent oxide as new catalyst for preparing of derivatives of benzoxazole. Use of benzoaxol ring in medicinal chemistry. Synthesis of 1,3-(Benzene-1,3-diyl) bis(benzoxazole). Synthesis of 3-(2-Hydroxynaphthol) benzoxazole.

    статья (395,8 K)
  • 315. 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)
  • 316. 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)
  • 317. 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)
  • 318. Synthesis and characterization of poly (ethylene phthalate-co- propylene succinate)

    Obtaining a biodegradable polymer material with satisfactory thermal properties. Synthesis of copolyester, poly (ethylene phthalate-propylene succinate) by direct polycondensation from ethylene glycol, polypropylene glycol, phthalic and succinic acid.

    статья (238,7 K)
  • 319. Synthesis and characterization of two coumarin fluorescent dyes containing a chalcone moiety

    The technology for the synthesis of two coumarin-chalcone hybrids by means of Kleisen-Schmidt condensation between 3-acetylcoumarin with benzaldehyde and 4-chlorobenzaldehyde, respectively. Method of identification and control of a chemical process.

    статья (197,3 K)
  • 320. Synthesis and complexity of new ligand with mercurysalt(ii)

    The syntheses of a new ligand: di (Furanyl Methylene hydrazono Ethyl) Benzene. It's structure, spectroscopy methods (IR, 13C NMR). Synthesizing of the complex by reactance the ligand with HgCh. Calcination process from mono nuclear complex, electrolyte.

    статья (1,1 M)
  • 321. 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)
  • 322. 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)
  • 323. 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)
  • 324. 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)
  • 325. Synthesis and study of antimicrobial properties of surfactants on the basis of cotton-seed oil, methyl diethanolamine and orthophosphoric acid

    To study antimicrobial properties of the synthesized surfactants, the method of consequent dilution was used. The experiments were carried out in the test tubes contained a surfactant at different concentrations and 1 ml of the physiological solution.

    статья (1,0 M)
  • 326. 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)
  • 327. Synthesis and x-ray investigation of nitrocalix[4]quinone

    The development of selective oxidation of simply accessible dihydroxy-dypropoxycalix[4]arene to nitrocalixmonoquinone by mixture of 75 % nitric acid and glacial acetic acid. Synthone for design of optical sensors and redox-sensitive bio-active compounds.

    статья (126,8 K)
  • 328. 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)
  • 329. Synthesis of cobalt (II) complex with new ligand di (furanyle methylene hydrazono) 1.2- di acetyle hydrazine

    Study of the synthesis of complexes of diacetylhydrazine with hydrazine hydrate. Carrying out the reaction of the ligand with cobalt in the presence of salts of metal chloride and furfural. Condensation of diacetylhydrazine with hydrazine monohydrate.

    статья (838,5 K)
  • 330. Synthesis of Fe:MgAl2O4 nanopowders into laser plum

    The features of production of Fe:MgAl2O4 nanopowders by evaporation of targets made from a oxide mixture by repetitively pulsed laser radiation. Differences in the phase compositions of the solid powder substances. A rate of the cooling the ytterbium.

    статья (885,8 K)

Страница:

  •  « 
  •  6 
  •  7 
  •  8 
  •  9 
  •  10 
  •  11 
  •  12 
  •  13 
  •  14 
  •  15 
  •  16 
  •  » 
  • главная
  • рубрики
  • по алфавиту
  • Рубрики
  • По алфавиту
  • Закачать файл
  • Заказать работу

© 2000 — 2025, ООО «Олбест» Все наилучшее для вас