scholarly journals Azide Method for Generating Metal Vapors in Space

2020 ◽  
pp. 102-108
Author(s):  
Anatoly I. Drobyzhev ◽  
Alexander M. Pyzhov ◽  
Dmitry A. Sinitsyn

Modern methods of rocket research of the upper layers of the atmosphere and near-Earth space cannot be imagined without the use of glowing artificial clouds (GAC). Traditional pyrotechnic methods for generating vapors of alkali and alkaline earth metals, used for the formation of GAC in space, are ineffective and require, as a rule, the use of metals with high chemical activity. The article presents the results of studies on the development of an alternative method for generating vapors of alkali and alkaline earth metals to create GAC in near-Earth space using inorganic azides of the corresponding metals. The long-term use of pyrotechnic metal vapor generators to create GAC in the upper atmosphere, equipped with azide pyrotechnic compositions, confirmed their high efficiency, reliability and safety of use.

Author(s):  
Andrzej Wojewódka ◽  
Marcin Gerlich

The fallowing article presents the combustion studies of Fe/alkaline earth metals peroxides composition. It contains a literature review and the results of own research, which aim is to determine the possibility of using iron-based thermite compositions in time delay elements. The article focuses on the investigation of combustion front propagation rate as a function of a pressing load, the iron content and the purity of used oxidants. The DSC, TG and XRD analysis confirmed that reactions in this system occurs mainly in the solid state.


2004 ◽  
Vol 10 (2-3) ◽  
pp. 16-21
Author(s):  
O.F. Tyrnov ◽  
◽  
Yu.P. Fedorenko ◽  
L.F. Chernogor ◽  
◽  
...  

Author(s):  
S.V. Borshch ◽  
◽  
R.M. Vil’fand ◽  
D.B. Kiktev ◽  
V.M. Khan ◽  
...  

The paper presents the summary and results of long-term and multi-faceted experience of international scientific and technical cooperation of Hydrometeorological Center of Russia in the field of hydrometeorology and environmental monitoring within the framework of WMO programs, which indicates its high efficiency in performing a wide range of works at a high scientific and technical level. Keywords: World Meteorological Organization, major WMO programs, representatives of Hydrometeorological Center of Russia in WMO


2020 ◽  
Vol 20 ◽  
Author(s):  
L. Hajba ◽  
A. Guttman

: Adeno-associated virus (AAV) is one of the most promising viral gene delivery vectors with long-term gene expression and disease correction featuring high efficiency and excellent safety in human clinical trials. During the production of AAV vectors,there are several quality control (QC)parameters that should be rigorously monitored to comply with clini-cal safety and efficacy. This review gives a short summary of the most frequently used AVV production and purification methods,focusing on the analytical techniques applied to determine the full/empty capsid ratio and the integrity of the encapsidated therapeutic DNA of the products.


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