Materials Literature
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and 35 Cl), and initiating new projects on amino acids ( 14 N), low-valent indium complexes ( 115 In), and other assorted materials. Metallocenes. We have amassed a large amount of 35 Cl, 47/49 Ti and 91 Zr NMR data for a series of titanocenes, zirconocenes and hafnocenes. These metallocenes are important in homogeneo…
Sodium polycrystalline polyaluminates Na2OnAl2O3 (5,5 n 9,5) were synthesized using solidand liquid-phase methods. It was shown that their conductivity decreases with the increase in n at 313-625 K. The decrease in the conductivity of the final ceramics with the increase in the formation pressure was demonstrated for…
The infl uence of the different types and amounts of strain induced martensite in AISI 304 austenitc steel with copper in internal friction behavior was studied. Specimens were deformed by tension from 0.03 to 0.12 of true strain at temperatures in the range -50 to 20oC, in order to obtain different volumetric fractio…
A simplified finite element model was established to simulate deformation of carbon nanotubes (CNTs) reinforcing magnesium matrix composites during the tensile test. The stress and strain of matrix and reinforcement agent and the effect of interface on mechanical behaviour of composites were specially studied. The sim…
The possibility of using the induction heating device is substantiated for creation of normalized tensions in the circular saw blade. The advantages of the given method are demonstrated over the ones applied in woodworking industry.
The possible deformation of plane structural elements. Get your own variations of the homogeneous prestressed orthotropic plate of constant length clamped on two opposite sides firmly and articulately.
Creating certainly-element model, it is necessary to aspire to that the mathematical apparatus describing a final element, included whenever possible a maximum of the information on physical, mechanical and deformation properties of such material, as concrete (reinforce concrete). Thus work of such element should cons…
YBCO superconducting film has attracts great attentions and has wide applications in the field of electronics such as filters, infrared detectors, THz antennas, etc. In the application of YBCO films, the preparation of its fine patterns with high performance plays a key role. In the paper,The photosensitive chelates a…
Process of ageing of polymeric building materials on the basis of polystyrene owing to photodestruction is considered. There are presented results of researches of physicomechanical properties of foam polystyrene in the conditions of ultraviolet and infrared irradiations.
The generalized theory of elastodynamics orthotropic laminated plates is proposed in paper. On its basis the analytical-numerical method for solving the problem of low-velocity impact on orthotropic laminated plates by ball are developed. Capabilities and reliability of the proposed method are illustrated by test exam…
Polydopamine film which contains amine groups and phenolichydroxyl groups exhibits fully reversible, pH-switchablepermselectivity for both cationic and anionic redox-active probemolecules. At high pH the film has a net negative charge thatexcludes anions but passes cations; at low pH it is positivelycharged and excludes…
Two electron cooling devices have been used at HIRFL-CSR in order to provide high quality heavy ion beams for nuclear and atomic research. The momentum spread is one of the most important characteristics of the beam quality. At HIRFL-CSR, the momentum spread is measured directly with the aid of longitudinal Schottky s…
In this study, a prediction method of compression set of O-ring in packages containing radioactive materials using by numerical simulation was investigated. In the lid of the MOX fuel transport packages, the EPDM (Ethylene Propylene Diene Monomer) O-ring was applied to confine the radioactive subset. In order to exami…
Natural frequencies of oscillations of the hinged fragment consisting of a hollow-core slab of reinforcedconcrete flooring, embedded on end faces in a girt strip have been analyzed. Both the initial calculation model of the fragment in a slab-beam system form and its simplified model in the bar system form have been e…
Degrees of branching were measured with 13C melt-state NMR in poly(n-butyl acrylates) synthesized in both the presence and absence of 1-octanethiol at various temperatures, and their precision calculated based on the signal-to-noise ratio of the quaternary carbon at the branching point. Nitrogen gas was used for all p…
Abstract Amino acids and self assembled monolayers (SAM’s) have been studied as to their inhibiting action on the corrosion of metallic materials. The objective of this work is to study the electrochemical behavior of the cisteincisteine, the diphosfonate and the mixture of both in inhibiting the action of corrosion o…
Causes of the origin of dіrect and reverse indentation size effect at determination of material hardness by indenters of different geometry are considered.
The present communciation deals with four taxa of Mesotaenium Nageli viz. Mesotaenium macrococcum (Kutzing) Roy and Bissette, M. chlamydosporum de Bary va, M. chlamydosporum var. minus (Reinsch) West and West and M. degreyii Turner var. breve. All of which are reported for the first time from West Bengal of these the…
Spo0A, DegU, CcpA, приводят к потере чувствительности экспрессии гена gseBi в отношение глюкозо-катаболитной репрессии.The expression of the Bacillus intermedius glutamyl endopeptidase gene was investigated for different length of its regulatory region. It was proved that the change of the length of the promoter regio…
In the whole design process of a reflectarray antenna, the part that demands more CPU time is that related with the optimization of the patches dimensions. For real reflectarrays with thousands of elements where the design of the antenna involves optimization of the dimensions of each element until the phase requireme…