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Vol 4, No 4 (2009)
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CHEMISTRY AND TECHNOLOGY OF MEDICINAL COMPOUNDS AND BIOLOGICALLY ACTIVE SUBSTANCES

4-25 100
Abstract
The review describes modern concepts of chemical and enzymatic synthesis, isolation of substances from natural sources, and creation of industrial technologies for obtaining phospholipids of various molecular types. Data on their structures, biological activities, and the possibility of using them for the preparation of liposomal forms of drugs are presented
26-30 92
Abstract
Synthesis of amphyphilic cationic meso-pyridilsubstituted porphyrins bearing long chain alkyl groups is described. An improved methods of preparation of tetra- and mono-alkylsubstituted meso-pyridil porphyrins are proposed. The data porphyrins will be investigated as mesogenic compounds and in studing of DNA-binding interactions of cationic porphyrins.

THEORETICAL BASES OF CHEMICAL TECHNOLOGY

31-39 72
Abstract
The concentration dependences of excess molar heat capacities of binary solutions is investigated. The projection of the systems behavior in terms of limited information is considered. The necessity of account of these excess thermodynamic function at the calculation of distillation is discussed.
40-48 69
Abstract
The analysis of mass-transfer equations used in practice of mass-exchange apparatus calculation for binary mixtures is carried out. It is showed that these equations are approximate. The accurate equation of mass-transfer based on diffusion model using linearization is proposed for qualitative investigations of binary mixtures rectification process

CHEMISTRY AND TECHNOLOGY OF ORGANIC SUBSTANCES

49-54 85
Abstract
Reaction of cross-aldol condensation of acetaldehyde with formaldehyde at presence of aminoacids and their ether- and benzoil-derivatives were studied in pyridine, N, N-dymethylacetamide, water and toluene. It was shown that aminoacids are capable to catalyse cross- and homocondensation of acetaldehyde. The yield of acrolein in presence of aminoacids is much lower than with use of its derivatives. The selectivity of cross-condensation is dependent from acid-base properties of catalyst and the reaction media. It is found that the main contribute to catalysis of cross-condensation is introduced by amino-group of aminoacid and it basic properties determine the yield of acrolein
55-59 58
Abstract
Results of experimental investigations of synthesis of hydrocarbon systems at high pressure and different mechanisms of synthesis are discussed. experimental results presented in this paper confirm the possibility of synthesis of hydrocarbon at mantle conditions from methane. these results can be accepted as support for the theory of the abyssal abiotic petroleum origin.
60-70 60
Abstract
From the studies of the kinetics of methanol conjugate dehydration process, a kinetic model has been proposed and kinetic parameters calculated. It was discovered that when other substances like ethane, ethylene were used as initiators the catalyst surface coked rapidly. On the K-1 model in the presence of hydrogen peroxide (1% in water solution of the initial methanol) the temperature of the dehydration process reduces by 50-60ºС at 50% formaldehyde yield and allows for the reaction to be carried out at a temperature of 820-830ºС

CHEMISTRY AND TECHNOLOGY OF INORGANIC MATERIALS

71-77 129
Abstract
It has been shown, that for automation of the calculation of material balance of technological processes one can successfully use Microsoft Excel, which allows to make balance calculations less laborious, to calculate large quantity of versions easily and thus to choose an optimal variant for the realization of technical process. Peculiarities of balance schemes made with the use of Excel were considered. An example of the calculation of material balance of the process of gas purification in production of trichlorosilane is given
78-83 66
Abstract
The influence of growth surface defects of CdхHg1-хTe epitaxial layers which has been grown by liquid phase epitaxy on quality of passivating coatings, creating by the method of the hot wall, is investigated. The reason of negative action nonplanarity and а surface defects of CdхHg1-хTe epitaxial layers on the technological process of the manufacture of photodiodes is established. The influence of crystallographic polarity of CdхHg1-хTe epitaxial layers on velocity of the CdTe coating precipitation and surface morphology is discussed
84-89 58
Abstract
The novel compounds Li6MNb4O14 (M = Zn, Mg) have been synthesized and characterized in the Li2O-MO-Nb2O5 (M = Zn, Mg) system. The synthesized phases were investigated by XRD, DTA and the chemical analysis. Specific conductivity and energy of activation of each compounds and the sample that doping by titanium oxide has been found. Comparison of absorption IR-spectra of investigated compounds and of samples Li6ZnNb4O14 having isotope on lithium and zinc has been compared.

SYNTHESIS AND PROCESSING OF POLYMERS AND POLYMERIC COMPOSITES

90-96 58
Abstract
Colloid-chemical properties of surface active substances of different nature on the boundary of styrene/water, isoprene/water, mixture of styrene and isoprene/water are discussed. It was shown that the mechanism of creation polymer-monomer particles are depending from composition of emulsion
97-100 49
Abstract
The investigation of diffusion of dibutylsebacinate in butadien-acrylonitrylic and butadien-methylstyrolic vulcanizates was realized. It was shown that diffusion process in butadien-acrylonitrylic vulcanizates isn't stationary. Diffusion coefficients of dibutylsebacinate in butadien-acrylonitrylic and butadien-methylstyrolic vulcanizates was calculated. Parameters describing compatibility of plasticizer with above named rubbers was determined. Adhesion characteristics were calculated. It was shown that structures of rubber and plasticizer are influence upon masstransfusion kinetic
101-105 62
Abstract
Outsourcer search stages are defined. The model of the outsourcer selection is offered, allowing the enterprise to maximize the net present value as a result of research and developmental works using scientific-technical outsourcing, including solutions on environmental oriented problems
106-108 51
Abstract
The article is dedicated to the search of reasons, which do not allow to provide ecological and economic efficiency of industrial use of nature. The possibility of transfer to biosphere economy and cosmic ecology is proposed for consideration
109-111 46
Abstract
To 80-th Anniversary of L.A. Serafimov


ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)