Materials Literature
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Using the method of thermal hydrolysis of six-water chloride of iron in the regenerative atmosphere, the powders of iron were obtained consisting of particles in the size range of 75-150 nanometers. The morphology and magnetic properties of the obtained alloy are investigated.
The YFeO3 and Y0.8Sr0.2FeO3 nanocrystals with an average particle size < 30 nm have been prepared by the co-precipitation method in aqueous solution of sodium carbonate containing the Y3+, Sr2+ and Fe3+ ions. Magnetization and coercive force of the doped ferrite Y0.8Sr0.2FeO3 were higher than of the pure YFeO3, such c…
The nuclear industry is on the verge of creating and implementing a new generation of reactors that are meant to be safer and more efficient. One of the new fuel designs utilizes tri-structural isotropic (TRISO) fuel particles. P-silicon carbide (SiC) is the main layer for metallic fission product retention in TRISO f…
The possibility of the vibrowave impact application under the connecting threads disassembly is investigated. The specified operations go to make up a considerable amount of work in the repair and recycling of engineering products. It is essential to find the problem solution to restrict the environment pollution, to…
Purpose: To study the characteristics of the anatomical structure of the valve of the coronary sinus Materials and Methods: The investigation was perfomed in 120 the human heart preparations (60 women and 60 men). Used cell, constitutional diagnostic and statistical methods of research. Results: The damper coronary si…
According to the practice of making concrete products, which steaming was realized in thermoshaping machines, concretes of such products are notable for their defective structure. An unevenness of the thermal field in the concrete when warming-up it by contact method causes migration of free moisture, as a result, the…
We investigate the temperature dependence of the surface tension of supported nanoclusters in the gas medium and the influence of some parameters on the cluster size distribution.
In this paper we studied the structure and mechanical properties of ceramics Nb2O5 and ceramics based on coprecipitated pentoxide Nb2(1-y)Ta2yO5, and the effect of treatment with concentrated light flows (CLF) on the structure and properties of these materials, using scanning probe microscopy and Raman spectroscopy (R…
One of the most effective ways to reduce power inputs to the manufacture of concrete and reinforced concrete products is the use of hardening accelerator additives that reduce the time or lower the temperature of thermal processing. From economic and ecological points of view it is expedient to use the by-products and…
EPURAREA APELOR UZATE MULTICOMPONENTE PRIN METODA DE FERITIZARE GALVANOCHIMICĂ Au fost studiaţi parametrii tehnologici ai procesului galvanocoagular de tratare a apelor uzate ce conţin ioni de Cr(VI) şi coloranţi organici, care decurge datorită electrolizei interne. Sunt discutate particularităţile proceselor de dizol…
The testing results and physicotechnical properties of next generation concretes with low specific consumption of cement per unit of strength are given. It is shown, that application of fine-grained dry mixes for production of all sorts of next generation concrete: reacting-powder, sand powder-activated and crushed-st…
Results of construction and investigation of ultrafine fibers (UFF) made of resorbable poly(3 hydroxybutyrate) by electrostatic formation are presented in this study. Influence of concentration of polymer solutions on fiber diameters and physical-mechanical properties of nonwoven fabric (NF) was investigated. While co…
La liberación controlada de fármacos en el sitio del tumor y el desarrollo de técnicas no invasivas de monitoreo constituyen 2 de los principales retos que enfrentan las terapias antitumorales en la actualidad. En este trabajo se analizan algunas de las potencialidades del uso de liposomas como vehículos para el trans…
Results of analysis of natural observation of the lower breastwalls of water-distributor of Zhagorsk GAES-2 are presented
Con el objetivo de evaluar la producción de poli-β-hidroxibutirato (PHB) por Pseudomonas, empleando borra oleosa como fuente carbonada; se aislaron cinco cepas a partir de borra oleosa de la Refinería Iquitos de Petroperú S.A-Operaciones Selva, las que posteriormente se cultivaron en agitación, a 37°C por 24 h, emplea…
The widespread practice of using the modern oligocarboxylated giperplasticizers of the latest generation is caused by a number of objective reasons: the necessity of the improving the technology of concrete mix placement with gradual transition to the self-compacting concretes, a serious increase in the ecological and…
The analysis of the existing system repair rolling stock industry and proposed to use structural and functional models that allow to create effective communication system repairs.
Allowable temperature conditions for hydration processes of the majority hydraulic binders are in the range (+5... +30)°C. That is why temperature is important for work with ETICS - external thermal insulation composite systems. Period with an average daily outdoor temperature +5°C is quite arbitrary, because temperat…
In this article we presented the analysis of molecular dynamic simulations results. The specificities of thermoactivated structure phase changes in 3D Me/C interface forms with grapheme layers and 3D transition metal surface planes have been revealed. The relaxation transition of interface Me-C coordinations and the f…
The effect of nitrogen ( N2 ) in the gas mixture on the phase composition, surface morphology, structural characteristics and physico-mechanical properties of films based on Ti-Al-N, formed by pulsed magnetron sputtering has been investigated. Polycrystalline film with a unique set of physical and mechanical propertie…