Materials Literature
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In this paper an analytical study on a stress-strain state of a steel pipeline section with a repair fi-berglass viscoelastic layer is described. The layer is considered long enough that allows to solve the problem in a flat axisymmetric statement. The analytical model including accounting of an isotropic viscoelastic…
O objetivo deste trabalho foi elaborar dois manuscritos,sendo o primeiro uma revisão de literatura, com o intuito de observar os protocolos utilizados para a remoção de pinos de fibra de vidro,e, a partir dos resultados preliminares desta revisão, produzir um segundo manuscrito com o objetivo de avaliar o desgaste den…
Este articulo presenta un trabajo de investigacion que esta contemplado en el ambito de las tecnologias de union, en particular con la resistencia electrica por puntos (RSW). El proceso de union por resistencia electrica esta compuesto por diferentes etapas que son necesarias para poder obtener una union entre dos cha…
Molten salt carburisation process using electro-reduction of molten salts containing carbonate salt has been Investigated using CO2 as a continuous source of carbon. The effectiveness of electro-carburisation under various CO2 concentrations for mild steel sample and an attempt to electro-carburised stainless steel ha…
Within a new relativistic approach there are presented the calculation data on the Auger electron transition energies for solids of As and Ag. New data on the Auger-electron energies for atoms and solids of the As and Ag are analyzed and compared with alternative theoretical semiempirical equivalent core approximation…
Розглянуто та проаналізовано способи забезпечення міцності трубопроводів надземних балкових переходів магістрального газопроводу великого діаметра (Ду = 1200–1400 мм) в процесі ремонтно-профілактичних робіт на опорах балкових переходів. Приведено теоретичні та експериментальні значення локальних напружень, що виникают…
C помощью DAPI-бэндинга, флуоресцентной гибридизации in situ (FISH) с зондами 26S и 5S рДНК и анализа мейоза проведено сравнительное цитогенетическое изучение автотетраплоидного сорта Подмосковная ромашки аптечной Matricaria chamomilla L. (M. recutita L.) и дикорастущей тетраплоидной ромашки непахучей M. inodora L. В…
Doktorska disertacija se odnosi na kreiranje gustih nanostrukturnih\nsinterovanih materijala na bazi hidroksiapatita.\nDvostepeno sinterovanje je iskorišćeno za dobijanje bifaznog kalcijum\nfosfata visoke gustine polazeći od Ca-deficitarnog hidroksiapatita na temperaturi\nnižoj od temperature fazne transformacije β→α-…
Досліджено основні закономірності отримання функціональних наночастинок магеміту темплатним синтезом за допомогою телехелатних олігопероксидів. In article the main regularities of receiving the functional nanoparticles of maghemite by the template synthesis with the help of telechelic oligoperoxides were researched.
The photoconductivity and photoluminescence of ZnS:Ti crystals in the visible spectra region are studied. The scheme of optical transitions within Ti2+ impurity centers is established. It is shown that the high-temperature photoconductivity of ZnS:Ti crystals is controlled by optical transitions of electrons from the…
In the course of the work carried out validation of computational models of uncooled turbine gas turbine installation. The influence of the dimension of the computational grid on the results of the simulation characteristics of turbines. Influence of turbine cavities on the turbines characteristics of has been studied…
The problematic issue of quality improving of secondary silumins has been considered and the ways of increasing of their constructive strength with the purpose of wider application in different branches have been shown.
The paper analyzes the effect of live load on the hinged finite length plasto-elastic beam, which lies on a single-sided elastic foundation. The problem is solved numerically using the generalization of grid-based and iteration approaches.
The article provides examples of international practical experience of countries where we have successfully accomplished the construction of multi-storey monolith - frame buildings in dense urban areas, such as the United States of America, United Arab Emirates, Russia and objects implemented and those which are under…
Provides a method of hardening the surface layers of the integrated steel 18CrM nTi by getting it differentiated phase-structural states w ith different am ounts of content and the degree of residual austenite m etastability It is established that, depending on the tem perature o f the plasm a im pact the hardness o f…
Researches of humidity of wood and polymeric composites on the basis of a waste ofpolypropylene and an organic waste and its influence on technical characteristics on samples arecarried out.
The problem of experimental study of the reaction of rigid plates on a bird strike by dynamic broadband strain measurement are considered in work. Data of experimental researches of influence of kinematical factors on response of a deformable plate-target at collision with a bird are presented. A series of experiments…
ABSTRACT The present work is a theoretical study of the direct contact condensation process of saturated vapor on fully developed subcooled laminar liquid film flowing over thin liquid film on adiabatic and the inclined solid surface .A theoretical model based on momentum , continuity and energy equations . heat balan…
Article deals with the installation of roofs made of lightweight metal. Method of mounting large-block constructions production facilities is especially important for large-scale construction on the area, volume and weight of the industrial facilities. From finding the rational design and technological solutions assem…
All our efforts to demonstrate a multifunctional device – photovoltaic gas sensor (i.e. solar cell which show photovoltaic action depending on the gas / volatile organic compounds (VOC) in the surrounding atmosphere) yielded negative results. Photovoltaic performance of the organic solar cells under study degraded – a…