Materials Literature
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Sapphire or mono-crystalline aluminum oxide wafers have been popularly adopted as the substrates of epi-layer process for the rapid growing demands of high-brightness light emitting diode (HB LED) industry. The HB LED devices for solid-state illumination have attracted immerse investigation of sub-surface crack proble…
In this study, the kinetics of microstructure evolution during hot rolling of type 316 austenitic stainless steel is investigated. First, its kinetics during the dynamic and static events, known as the material genome, is driven by single- and double-compression tests at several temperatures and strain rates. Inverse…
ABSTRACT The effect of freeze‐thaw pretreatment on the thermal drying process and physicochemical properties of chitosan was investigated in this study. Results showed that the freeze‐thaw treatment changed the form of chitosan paste and reduced 75.6–77.7% of the water content. The freeze‐thaw treatment decreased the…
Transparent and conductive alumina-doped ZnO (AZO) films were deposited on sapphire substrates at room temperature by room temperature pulsed laser deposition (PLD) and then followed by laser crystallization at 500K. As implied by the Multiphysics Simulation, X-ray diffraction spectra and morphological characterizatio…
For predicting of diffusive phase transformations during the austenitizing process in hypoeutectoid Fe-C steels, a two-dimensional model has been developed. The diffusion equations are solved within each phase (α and γ) using an explicit finite volume technique formulated using a square grid. The discrete α/γ interfac…
The use of recyclable materials has become an important trend in all activity areas, reason why material based on liquid wood called Arbofill, Arboblend and Arboform will replace plastic in different applications in the near future. The new materials are the main substances that have an important effect on company dev…
Efforts have been made to develop new treatments for cancer with fewer side effects and with a better outcome. Gold nanorods are promising as a cancer treatment device when activated by a light source, usually in near-infrared region. In this study we investigated the effect of different light doses applied to tumors…
Article is devoted to a formation of a structural calculated finite element mesh of the passage blade of the axial turbine in program Gambit. Possible ways of construction of calculated model in the program are considered, the analysis on basis of what the new way allowing to create a better structural mesh has been o…
The reasons of occurrence and development of self-oscillations are considered at processing by cutting. The mathematical model of self-oscillatory process is offered at processing of deep apertures which has allowed investigating influence of various factors on intensity of vibrations and stability of system. Taking i…
Results of working out of system of technical decisions for ensuring the high quality of friction units of gasturbine engines are described in the report, including the model for calculating the wear resistance of friction units, new scratching method and tester for estimating the activation parameters of deformation…
The fatigue life variation coefficients versus its base were obtained on the basis of statistic processing of titanium disks test and operation results. The lower boundaries of the D-30 and D-30KU engines’ LPC stage 1 disk life distribution in the area of fillets of dovetailed grooves were determined.
The disk finite element was developed for structural analysis of rotating nonuniform heated disks from the gas turbine engines. FORTRAN code program was developed for structural analysis of rotating nonuniform heated disks from the gas turbine engines.
The basic laws and features of plotting of wearability, wearproof and heat-resisting coverings on a detail of a gas path of the turbine, the compressor and the combustion chamber of gas turbine engine by gas-thermal plasma and ionicplasma vacuum methods are considered. The basic updates and elements of modernisation o…
The seal design influence on work of the secondary air system in gas turbine engine is shown. The design method of the such system with the definition of mutual influence of gas seal and radial gap change is generated. This methods and means for practical realization are recommended at the engine design.
The theoretical substantiation of the constructive scheme of the air-gas tract rinsing device for gas turbine engine (GTE) is lead. The interrelation of device construction with geometrical parameters of engine entrance part and parameters of an air stream is shown, calculated proportion for evaluation of key paramete…
In work the technique of theoretical definition of temperature fields at thermoplastic hardening is presented. As an example results of calculations for unilateral cooling of a large-sized detail of type of a disk of the turbine of gas turbine engines are shown. Comparison of settlement and experimental temperature fi…
In this work the methodology of an estimation of parameters of reliability GTD with a glance sudden failures is presented. By this methodology the analysis of influence of the limit of the geometrical sizes, rotating frequency and disk material density on failure rate is carried out.
Prions are associated with a number of fatal diseases in mammals and heritable phenotypes in yeast. Prions propagate through pathway that involves protein misfolding and aggregation. The mis-folded state is propagated through interactions between misfolded aggregates and normally folded protein monomers. Prion aggrega…
Schools of fish, flocks of birds and other groups of organisms, can move in a highly coordinated fashion despite the fact that each member only experiences its immediate surroundings and there exists no obvious leader. Understanding how the global properties of the group, for example its shape, dynamics and organizati…
Normal 0 false false false MicrosoftInternetExplorer4 The technological cycle was developed for the 99 m Tc-pertechnetate radiopharmaceutical ( Na 99m TcO 4 solution) by means of nuclear reactions 98 Mo(n, g ) 99 Mo . The description of the technological line on the WWR-M reactor and the hot-cells for the radionuclide…