синтез

The possibility of synthesis of heat-resistant steels metallothermy are set as a result of theoretical and experimental work. The influence of the method of synthesis on metallothermic features of the microstructure and phase composition of the thermite steel was found. The mechanical and service properties and their dependence on temperature and the effect on the properties of the alloy grain thermite metal are set for thermite synthesized analogues of industrial heat-resistant steel grades “40Х15Н7Г7Ф2МС” and “37Х12Н8Г8МФБ”

In this article the methods of synthesis of novel saccharide containing with reactive epoxide and tieranic groups have been developed. Obtained compounds seem to be prospective intermediates for cration of new surface active and biocompatible compounds. Розроблено методи одержання нових сахаридовмісних сполук з реакційноздатними епокси- та тіірановими групами. На основі таких сполук можна одержувати різноманітні похідні, які мають поверхнево-активні та біоцидні властивості.  

The novel sugar-containing thiosulfoesters were prepared from the natural compound – glycidylgalactose. The synthesis techniques of arylsulfonic acids sugar-containing thioesters were developed and worked out on the basis of the model compound – 2-butoxymethylthiirane. 
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Синтезовано нові сахаридовмісні тіосульфоестери на основі сполуки природного походження – гліцидилгалактози. Методики синтезу сахаридовмісних тіоестерів аренсульфонових кислот розроблено та відпрацьовано на основі модельної сполуки – 2-бутоксиметилтіїрану.
 

In&nbsp;the paper the behavior of&nbsp;an&nbsp;intelligent agent in&nbsp;a&nbsp;competitive environment is&nbsp;investigated in&nbsp;the paper. The OODA loop is&nbsp;chosen for behavior simulation. The interaction of&nbsp;OODA loop stages (observation, orientation, decision support, action) with the ontology of&nbsp;tasks and subject area in&nbsp;which the agent operates was explored.

In order to develop a technological process for obtaining vanadium dioxide by the thermal decomposition, we developed the method of synthesis of highly dispersed vanadium(IV) salt as a precursor. It comprises vanadium pentoxide interaction with the oxalic acid in the solution, which gives intermediate oxovanadium solution, following precipitation of the product (ammonium tetravanadate) by adding ammonium hydroxide to oxovanadium, rinsing and drying the product.

Methods of oligomers (polymers) with hydroxy end-groups obtaining are examined. The synthesis of hydroxy-containing oligomers based on epoxy resins is of special attention. The molecules of mentioned oligomers apart from free primary and secondary hydroxy groups contain epoxy, peroxy, carboxy or acrylic groups.