LOST-CIRCULATION CONTROL WITH USING AERATED LIQUIDS

In article are given materials on lost-circulation control with using aerated drill fluids. Depending on type source of washing fluid were studied conditions of aerated liquid and reduce hydrostatic pressure to permeable zone.In article are given materials on lost-circulation control with using aerated drill fluids. Depending on type source of washing fluid were studied conditions of aerated liquid and reduce hydrostatic pressure to permeable zone

Analysis of thermophysical parameters of solar water desalination plant with an external camera

In this work, an analysis of the thermophysical processes taking place inside a specially designed chamber with a geometry different from other works was carried out. This process is designed in COMSOL Multiphysics software. Boundary conditions were investigated for ambient temperature of 293.15 K and solar radiation of 1000 W/m2. The process was taken as natural convection. In this case, the flow of air with high humidity inside the solar water heater was analyzed. It can be seen that the air temperature rises to 450 K. At the same time, the speed of moist air inside the chamber, heat flow and other thermophysical quantities were determined and analyzed

The Boltzmann equation for colourless plasmons in hot QCD plasma. Semiclassical approximation

Within the framework of the semiclassical approximation, we derive the Boltzmann equation describing the dynamics of colorless plasmons in a hot QCD plasma. The probability of the plasmon-plasmon scattering at the leading order in the coupling constant is obtained. This probability is gauge-independent at least in the class of the covariant and temporal gauges. It is noted that the structure of the scattering kernel possesses important qualitative difference from the corresponding one in the Abelian plasma, in spite of the fact that we focused our study on the colorless soft excitations. It is shown that four-plasmon decay is suppressed by the power of $g$ relative to the process of nonlinear scattering of plasmons by thermal particles at the soft momentum scale. It is stated that the former process becomes important in going to the ultrasoft region of the momentum scale.Comment: 41, LaTeX, minor changes, identical to published versio

Quality Control of Radiotherapy for Determining the Absorbed Dose Rate in Various Environments for the Gamma Therapeutic Device Terabalt

This article presents the results of determining the absorbed dose rate in water for the gamma therapeutic device Terabalt in the Center of Nuclear Medicine and Oncology in Semey.Авторы выражают признательность руководству и сотрудникам Центра Ядерной Медицины и Онкологии города Семей (Республика Казахстан) за оказанную помощь при проведении исследования и подготовки данного материала. Авторы выражают благодарность Департамент технического сотрудничества, Международное агентство по атомной энергии за предоставленную возможность проведения данной работы

Study on the precision of the multiaperture scintillation sensor turbulence profiler (MASS) employed in the site testing campaign for the Thirty Meter Telescope

The multiaperture scintillation sensor (MASS) has become a device widely employed to measure the altitude distribution of atmospheric turbulence. An empirical study is reported that investigates the dependence of the MASS results on the knowledge of the instrumental parameters. Also, the results of a side-by-side comparison of two MASS instruments are presented, indicating that MASS instruments permit measurements of the integrated seeing to a precision better than 0.05 arc sec and of the individual turbulence layer strength Cn2(h)dh to better than 10^−14 m^(1/3)

ONE OF THE MAIN TASKS OF THE PROSECUTION BODIES IS TO MONITOR THE O BSERVAN CE OF LEGISLATION IN THE FIELD OF PROTECTION OF THE RIGHTS OF EN TREPREN EU RS

This article outlines the necessity for continuous analysis of the legislation related to the protection of the rights of the entrepreneurs. Certain legislative documents that regulate the activities of the entrepreneurs are analyzed in the article

Selection of the composition and structure of the energy complex

In this article, an assessment of the energy needs of the power supply facility is considered