Methodological aspects of the study of the antianaphylactic activity of chemical compounds

1983 ◽  
Vol 17 (5) ◽  
pp. 357-360
Author(s):  
I. D. Ionov
Keyword(s):  
Chemical Compounds ◽  
Antianaphylactic Activity ◽  
Methodological Aspects

Cytochemical analysis of mast cell granules after poly-dl-lysine action

1978 ◽  
Vol 36 (2) ◽  
pp. 278-279
Author(s):  
R. Courtoy ◽  
L.J. Simar ◽  
J. Christophe
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Chemical Compounds ◽  
Cellular Membrane ◽  
Thin Sections ◽  
Organic Bases ◽  
Ferric Thiocyanate ◽  
Cytochemical Analysis ◽  
Mast Cell Granule ◽  
Amine Liberation

Several chemical compounds induce amine liberation from mast cells but do not necessarily provoque the granule expulsion. For example, poly-dl-lysine induces modifications of the cellular membrane permeability which promotes ion exchange at the level of mast cell granules. Few of them are expulsed but the majority remains in the cytoplasm and appears less dense to the electrons. A cytochemical analysis has been performed to determine the composition of these granules after the polylysine action.We have previously reported that it was possible to demonstrate polyanions on epon thin sections using a cetylpyridinium ferric thiocyanate method. Organic bases are selectively stained with cobalt thiocyanate and the sulfhydryle groups are characterized with a silver methenamine reaction. These techniques permit to reveal the mast cell granule constituents, i.e. heparin, biogenic amines and basic proteins.

Growth of near noble metal Pd and Pt thin film silicides morphology and structure

1984 ◽  
Vol 42 ◽  
pp. 498-499
Author(s):  
E. I. Alessandrini ◽  
M. O. Aboelfotoh
Keyword(s):  
Noble Metals ◽  
Annealing Temperature ◽  
Chemical Compounds ◽  
Barrier Properties ◽  
Solid State Reactions ◽  
Transmission Electron ◽  
Stable Chemical ◽  
Metal Thickness ◽  
Amorphous Si ◽  
Si Films

Considerable interest has been generated in solid state reactions between thin films of near noble metals and silicon. These metals deposited on Si form numerous stable chemical compounds at low temperatures and have found applications as Schottky barrier contacts to silicon in VLSI devices. Since the very first phase that nucleates in contact with Si determines the barrier properties, the purpose of our study was to investigate the silicide formation of the near noble metals, Pd and Pt, at very thin thickness of the metal films on amorphous silicon.Films of Pd and Pt in the thickness range of 0.5nm to 20nm were made by room temperature evaporation on 40nm thick amorphous Si films, which were first deposited on 30nm thick amorphous Si3N4 membranes in a window configuration. The deposition rate was 0.1 to 0.5nm/sec and the pressure during deposition was 3 x 10 -7 Torr. The samples were annealed at temperatures in the range from 200° to 650°C in a furnace with helium purified by hot (950°C) Ti particles. Transmission electron microscopy and diffraction techniques were used to evaluate changes in structure and morphology of the phases formed as a function of metal thickness and annealing temperature.

Methodological Aspects of the Training Course "Modern Economic Conceptions"

2012 ◽  
pp. 154-157
Author(s):  
V. Vasilenok ◽  
N. Shapiro
Keyword(s):  
Methodological Issues ◽  
Training Course ◽  
Modern Economic ◽  
Methodological Aspects

Methodological and methodological issues of the meaningful construction of a new training course for master's training "Modern Economic Concepts" are discussed in the article. A number of concrete proposals have been made to improve the teaching of the course.

Foreign Direct Investments: The Indirect Way to Economy

2007 ◽  
pp. 63-75 ◽  
Author(s):  
A. Navoi
Keyword(s):  
Russian Federation ◽  
National Economy ◽  
Financial Resources ◽  
Foreign Direct Investments ◽  
Russian Economy ◽  
The Russian Federation ◽  
Methodological Aspects

The article analyzes the situation with attraction of foreign direct investments (FDI) into the Russian Federation. Sharply increased inflow of international financial resources into national economy has highlighted the problem of definitions, the reasons of this phenomenon and its economic contents. The article considers methodological aspects and economic essence of modern FDI. Special accent is made on the estimation of the situation with their attraction into Russia, FDI structure and effectiveness. The conclusions about basic directions of the increase of their effectiveness in the Russian economy are formulated.

Language policy: An economics perspective

2016 ◽  
pp. 128-140
Author(s):  
D. Kadochnikov
Keyword(s):  
Economic Theory ◽  
Language Policy ◽  
Research Field ◽  
Economic Policies ◽  
Economic Phenomenon ◽  
Market Situation ◽  
Theory Of Language ◽  
Methodological Aspects

Economic theory of language policy treats a language as an economic phenomenon. A language situation is considered to be an economic, or market, situation, while language policy becomes an element of economic policies. The paper aims to systematize and to further develop theoretical and methodological aspects of this promising research field situated between economics and sociolinguistics.

On the Problems of Normative Economics

2007 ◽  
pp. 59-72
Author(s):  
I. Lavrov
Keyword(s):  
Economic Theory ◽  
Political History ◽  
Normative Economics ◽  
Normative Approach ◽  
Normative Analysis ◽  
Positive Elements ◽  
Real Objects ◽  
Methodological Aspects

The author considers theoretical, philosophical and methodological aspects of normative approach in economic theory. The article discusses normative analysis and types of normative and positive elements in economic theory, basing upon difference between abstract and real objects of science. The specific traits of generations as subjects of economic and socio-political history are determined.

Methodological aspects of natural territories zoning using machine learning

2020 ◽  
pp. 13-20
Author(s):  
D.O. Krivoguz ◽  
◽  
R.V. Borovskaya ◽  
Keyword(s):  
Machine Learning ◽  
Methodological Aspects
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