Materials Literature
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A promising therapy for retinal diseases is to employ biodegradable scaffolds to deliver retinal progenitor cells (RPCs) for repairing damaged or diseased retinal tissue. In the present study, cationic chitosan-graft-poly(ɛ-caprolactone)/polycaprolactone (CS-PCL/PCL) hybrid scaffolds were successfully prepared by elec…
Brushite, CaHPO 4 ∙2H 2 O, is a layered structure in which the layers are held together by water molecules via hydrogen bonds. Brushite loses its water molecules in two steps when heated, to form monetite CaHPO 4 . The loss of water results in the formation of an amorphous phase along with monetite. We investigated th…
High-quality Mn:ZnSe/ZnS core/shell and Mn:ZnSeS shell-alloyed doped nanocrystals (d-dots) with up to 50% photoluminescence (PL) quantum yield (QY) have been synthesized based on nucleation-doping strategy through a phosphine-free approach. The formation of MnSe nanoclusters was achieved by adjusting the ratio of stea…
In this paper, the issue of the kinematic – as opposed to dynamic – preshaping of self-adaptive robotic fingers driven by linkages is discussed. A method to obtain designs of these fingers capable of various behaviours during their closing motions is presented. The method is based on using triggered passiv…
The present paper aims at studying the behaviour of the poly(vinyl alcohol) [PVA] cryogel in the presence of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]+[BF4]–) aqueous solutions with various concentrations. The gravimetric method showed that the swollen PVA cryogels exhibit mechanically active behaviour. PV…
Actual aspects of the system development of the production sphere state regulation are presented. The state authorities system as a development and organization basis of the public environmental protection policy has been constructed. The public regulatory system of the production sphere ecologization at the regional…
Closedness equation for biorthogonal system of functions has been derived. Closed-loop function systems characteristics are defined. They allow to solve contact problems of elasticity theory for finite bodies – a rectangle, a circular plate, a cylinder of finite length, etc.
Closed solution of the elasticity problem on the half-plane balance with rectilinear shift dislocation is presented. The dislocation core is assumed to lie inside the area, and the slip line - to cross the half-plane boundary. The solution applicability to the estimation of the crust stress state near disjoint disloca…
Simulation data of the digital part of the described microprocessor are presented.
Original quantitative assessment of the qualitative academic discipline preparation has been worked out. It considers all the factors which define this quality, and describes one of the characteristics of the developed functional model of this discipline preparation.
Functionability and structure of the expert system input unit for engineering and technological service of the complex machinery are considered. Program system interface is given.
The experimental study results of several hydrodynamic parameters of fluid discharge through the throttle channels of cylindrical or flat forms are offered. The pressure distribution in different points of flow in the considered throttle channels has been analyzed.
We have prepared a series of nano-sized aluminium nitride (nano-AlN)/cycloaliphatic epoxy/trimethacrylate (TMPTMA) systems and investigated their morphology, thermal conductivity, thermal stability and curing behavior. Experimental results show that the thermal conductivity of composites increases with the nano-AlN fi…
The toolkit intended to increasing the investment activity of the enterprises of diverse patterns of ownership in the economic ecologization has been developed. The ecological and economic evaluation technique for the human impact of an enterprise on the environment is offered.
The research results of the electrothermic degradation of fiber-optical communication lines caused by the external electromagnetic fields impact are offered.
Application of stroboscopic Poincare map for diagnosis of a radial drill deviation is considered.
A semiotic analysis of the emblems representing the parties elected to State Duma in December, 2007, has been carried out. The emblem structure, and their symbolic, graphical, colour, text and other elements are revealed. It has been found that emblem characteristics are expressed in archaization, folklorization, and…
The actual problems of ecological hazard, ways of ecological hazard reduction, and harmonious interaction of society and nature in the "man-nature" system are considered.
Possibility of application of ant colony algorithms for realization of the transposition ciphers cryptanalysis is studied. Its application to the plain text results in the cryptogram received by shifting symbols of the plain text in a certain order. It is shown how this problem can be restricted to a classical problem…
A design model and general properties of the ejection pressure lock are offered. A selection method of the pressure lock with the lowest power consumption is developed.