The methodical basis is developed for calculations of the acoustic thermometer and experimental check is carried out it.
The electrochemical behavior of steel in a model of contact water heating was investigated. It was shown that the increase in temperature, carbon dioxide concentration, the application of stirring lead to an increase in corrosion rate, which is not inhibited in time unlike corrosion in the water with natural CO2 content. The dependence of pH on the concentration of CO2 was established, which is the main corrosion factor.
Chemical composition and microscopic structure of stems of representatives of non-wood plant raw material were established, which allowed to prove the feasibility of processing them into production of pulp and paper, pharmaceutical and woodworking industries. Influence of main technological parameters (concentration, temperature and chemicals consumption) of obtaining pulp on quality indexes (yield, content of residual lignin, physical and mechanical properties) was studied. This allowed calculating adequate regression equations using mathematical methods of planning experiment.
The new going is developed near the evaluation of exactness of results of measurings by the evaluation of their vagueness. This approach differs from the known (existing) evaluations of exactness of measurings, which it was assumed at, that constituents had normal distribution, which does not depend on the type of distributing of constituents, influencing on a result. For this purpose as an initial size the function of belonging, the special case of which is probability, which interval estimations, uniting subjective and experimental information, were got at, was utillized.
The purpose of the work is to improve, develop and create new effective methods and procedures of constructing and evaluating the effectiveness of cryptographic attacks with additional data on information security systems, obtaining estimates of information security systems resistance against such attacks, as well as new methods for determining directions and ways to improve hardware and software implementations of IT-security algorithms that take into account the latest attacks that use side channel information, failures data, the performing time of some operations, energy consumption and
The object of research is the directed crystallization partly of semitransparent materials from melt. The subject of research is mathematical models of radiation-conductive and radiation-convective heat exchange. Mathematical models and techniques of numeral solution of tasks of ra-diation-convective heat exchange are worked out taking into account influence of impurities in melt on an asorptance and selectivity of optical properties of semitransparent crystal and melt.
The new enthalpy-entropy method of the thermodynamic analysis of gas turbine cycles and combined on their basis energetic installations is developed. Methods of the thermodynamic forcing, at the first, of basic gas turbine installations by connection to them of closed gas turbines, which produce additional electric energy by utilization of the gas turbine exhaust gases heat potential, and, at the second, one-fuel monic gas-steam installations with using of the steam extended expansion turbines is proposed.
It is developed new approach for diffusion formation of stable nanoscaled magnetic-hard FePt films with chemically ordered L10(FePt)FCT phase at using additional layers of alloying elements (Ag, Au, Cu) with low surface energy. The energy of interface between layers was applied as additional superior-driving force for acceleration of thermally activated processes of chemical ordering FePt film and decreasing of temperature (~ 100oC) of phase transformation of chemically disordered magnetic-soft А1(FePt)FCC to chemically ordered magnetic-hard L10(FePt)FCT phase with superstructure.
Electro-magnetic waves propagation in atmosphere is of great theoretical and practical interest because using laser radiation for information transmission through the earth's atmosphere has many obvious advantages over traditional communication methods. However, fluctuations of the refractive index in the atmosphere, caused by turbulence, lead to the optical field fragmentation in the detecting area and to the beam wondering in regards to the initial direction.
The current concept of enterprise development strategy under which the company is directly linked with its social and economic value, which is determined, along with technical and economic indicators - for a system of values, competencies and resources, effective management which causes the growth of the market value of the company. Determined system of qualitative and quantitative assessment of the corporate social responsibility of the enterprise.
