scholarly journals EXPERIENCE OF SEALING WEAK WATER-SATURATED LOESS SOILS WITH VERTICAL SAND DRAINS IN SEISMIC REGIONS

2019 ◽  
Vol 10 (2) ◽  
pp. 26-35
Author(s):  
R. A Mangushev ◽  
R. A Usmanov
Keyword(s):  
Experimental Studies ◽  
Layer By Layer ◽  
Loess Soils ◽  
Central Asian ◽  
Parameter Field ◽  
The Republic ◽  
Seismic Impact ◽  
Water Saturated

The article presents the results of studies relating to compaction of weak water-saturated forest soils and vertical sandy drains under static and seismic effects in the conditions of the Central Asian region. Considering the absence of any experimental and theoretical studies of the application of this parameter, field (in-situ) experimental studies were carried out to identify the possibilities and effectiveness of its use in conditions of weak water-rich loess soils of the Republic of Tajikistan. The article discusses changes in the basic physical and mechanical characteristics of soils and experimental structures. At the experimental site, three plots with a size of 10·10 m were prepared, where the plot was loaded without the installation of vertical sand drains; 3·3 m to a depth of 6.0 m. Static loading of experimental plots by a derivative by layer-by-layer dumping of ground material with measurement of total and layer-by-layer deformations of the packed thickness. Imitation of seismic impact with an intensity of 8 points was carried out using short-delayed explosions of explosive charges. Studies have shown the effectiveness of the use of vertical sandy drains for compaction of weak water-saturated loess soils. Recommendations are given on the use of explosion energy to improve the quality of soil compaction.

Challenges to Creating Vibrant Media Education in Young Democracies: Accreditation for Media Schools in Georgia

2017 ◽  
Vol 72 (3) ◽  
pp. 322-333 ◽  
Author(s):  
Mariam Gersamia ◽  
Eric Freedman
Keyword(s):  
Mass Communication ◽  
Journalism Education ◽  
Organization Model ◽  
Cultural Organization ◽  
Central Asian ◽  
Central Asian Countries ◽  
The Republic ◽  
Standards Of Accreditation ◽  
Made In

Since achieving independence in 1991, the Republic of Georgia has made significant progress with democratization and now has what is considered the freest, most independent, and most diverse press among the ex-Soviet Caucasus and Central Asian countries. Improvements have been made in the quality of journalism education as part of a national process of educational reform, but curricula remain hampered by Soviet-era legacies in content and pedagogy. This essay compares a leading university’s curriculum with the UNESCO (United Nations Educational, Scientific, and Cultural Organization) model curricula for journalism education, discusses the purposes and standards of accreditation for journalism and mass communication programs, and concludes that the current accreditation process in Georgia needs improvement.

scholarly journals Experimental study of quality and electricity losses in low voltage rural electric networks

2021 ◽  
Vol 23 (3) ◽  
pp. 209-222
Author(s):  
O. S. Rakhimov ◽  
D. N. Mirzoev ◽  
E. I. Grachieva
Keyword(s):  
Low Voltage ◽  
Experimental Studies ◽  
Digital Information ◽  
Electric Networks ◽  
Daily Consumption ◽  
Measuring Device ◽  
Three Phase ◽  
The Republic ◽  
Information Database

THE PURPOSE. Due to the increase in the number of farms in the Devashtichsky district of the Sughd region of Tajikistan, over the past 3-4 years, a disproportionate distribution of electricity in the 0.4 kV network has been observed. Unbalance currents of phase loads in relation to asymmetric phase voltages at the terminals of consumers of a three-phase network cause additional losses of electricity, which can reach 21% of the standard losses. In the decree of the President of the Republic of Tajikistan dated May 10, 2009 No. 29 “On energy saving and reduction of electricity losses” it is indicated that there is a need to study the quality of electricity in rural 0.4 kV networks and its compliance with GOST 32144. 2013, as well as an assessment of losses electricity in its distribution structure is an important task in the field of rural electricity. METHODS. A single-line diagram of a 0.4 kV network with initial parameters, which were refined during the survey of the network, and the current loads of outgoing lines were investigated. Experimental studies of the quality of electricity and assessment of the level of losses in the low- voltage network were carried out using a complex measuring device «Energotester» PKE - A - C4. RESULTS. The studies allowed obtaining data on the daily consumption of electricity in individual outgoing lines, information on the characteristics of consumers, digital information (database) on indicators of the quality of electricity in low-voltage networks. CONCLUSIONS. It has been established that the main factors influencing the losses of electricity in low-voltage networks are: incommensurability of the power of transformers of transformers and consumers, uneven loading of individual phases, a significant effect of individual converters on the quality of energy. Measures are forecasted to reduce losses and improve the quality of electricity in low-voltage rural networks of 0.4 kV.

Preparation of (111)-Oriented Pt Electrode Films with Quasi-Monocrystal Properties on MgO/TiN Buffered Si(100) by PLD

2007 ◽  
Vol 280-283 ◽  
pp. 823-826 ◽  
Author(s):  
Tong Lai Chen ◽  
Xiao Min Li
Keyword(s):  
High Energy ◽  
Layer Growth ◽  
Atomic Scale ◽  
Layer By Layer ◽  
X Ray Diffraction ◽  
Pt Electrode ◽  
Force Microscopy ◽  
Atomic Force

Atomic-scale smooth Pt electrode films have been deposited on MgO/TiN buffered Si (100) by the pulsed laser deposition (PLD) technique. The whole growth process of the multilayer films was monitored by using in-situ reflection high energy electron diffraction (RHEED) apparatus. The Pt/MgO/TiN/Si(100) stacked structure was also characterized by X-ray diffraction (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM). The HREED observations show that the growth mode of the Pt electrode film is 2D layer-by-layer growth. It is found that the (111)-oriented Pt electrode film has a crystallinity comparable to that of monocrystals. The achievement of the quasi-single-crystal Pt electrode film with an atomic-scale smooth surface is ascribed to the improved crystalline quality of the MgO film.

scholarly journals Investigation of Laser Polishing of Four Selective Laser Melting Alloy Samples

2020 ◽  
Vol 10 (3) ◽  
pp. 760
Author(s):  
Dongqi Zhang ◽  
Jie Yu ◽  
Hui Li ◽  
Xin Zhou ◽  
Changhui Song ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Selective Laser Melting ◽  
Laser Power ◽  
Layer By Layer ◽  
Metal Powders ◽  
Laser Melting ◽  
Laser Polishing

Selective laser melting (SLM) is a layer by layer process of melting and solidifying of metal powders. The surface quality of the previous layer directly affects the uniformity of the next layer. If the surface roughness value of the previous layer is large, there is the possibility of not being able to complete the layering process such that the entire process has to be abandoned. At least, it may result in long term durability problem and the inhomogeneity, may even make the processed structure not be able to be predicted. In the present study, the ability of a fiber laser to in-situ polish the rough surfaces of four typical additive-manufactured alloys, namely, Ti6Al4V, AlSi10Mg, 316L and IN718 was demonstrated. The results revealed that the surface roughness of the as-received alloys could be reduced to about 3 μm through the application of the laser-polishing process, and the initial surfaces had roughness values of 8.80–16.64 μm. Meanwhile, for a given energy density, a higher laser power produced a laser-polishing effect that was often more obvious, with the surface roughness decreasing with an increase in the laser power. Further, the polishing strategy will be optimized by simulation in our following study.

scholarly journals Forecasting the quality of mineral oils during oil refining according to the fuel and oil flow chart at Atyrau Refinery

2021 ◽  
Vol 288 ◽  
pp. 01028
Author(s):  
Aigul Bukanova ◽  
Fazilat Kayrliyeva ◽  
Saule Bukanova ◽  
Nagima Karabassova ◽  
Lydia Sakipova
Keyword(s):  
Viscosity Index ◽  
Experimental Studies ◽  
Chemical Properties ◽  
Vacuum Gasoil ◽  
Oil Refining ◽  
Mineral Oils ◽  
Type Composition ◽  
Oil Flow ◽  
The Republic

The article discusses the problem of rational oil refining at Atyrau Refinery. Based on a detailed study of the properties of low-sulfur oils of Kazakhstan, in order to assess the potential for the selection of petroleum oils, effective refining methods with modern technologies are shown. A graph is given that allows us to assess the raw mate-rial potential of the Republic of Kazakhstan for lube fractions of oil. The potential reserve of the considered deposits can fully meet the needs of the Republic in oils. The physical and chemical properties of crude oil sup-plied to Atyrau refinery, with a view to their use as raw materi-als for the oil refining and production. The results of experiments on hydrocracking of the plant’s vacuum gasoil are also presented, indicating that this refining option allows you to obtain not only light distillates (gasoline and diesel fuel), but also excellent base oils. This can significantly advance the oil refining in the enterprise as a whole. On the basis of experimental studies, the correlation dependence of the viscosity index on the hydrocarbon-type composition of oils was revealed, which allows predicting the quality of the resulting product.

scholarly journals Investigation of the quality of Arctic diesel fuel imported to the Republic of Sakha (Yakutia)

2018 ◽  
Vol 80 (3) ◽  
pp. 358-361
Author(s):  
E. L. Iovleva
Keyword(s):  
Low Temperature ◽  
Diesel Fuel ◽  
Experimental Studies ◽  
Geographic Location ◽  
Normative Values ◽  
Temperature Characteristics ◽  
Gas Stations ◽  
Operational Characteristics ◽  
The Republic

The results of experimental studies of the quality of Arctic diesel fuel taken from various gas stations of the Republic of Sakha (Yakutia) are shown. The main operational characteristics of Arctic diesel fuel are investigated. The work was carried out in the laboratory of the department "General, analytical and physical chemistry". Taken diesel fuel by geographic location is divided into 3 parts: central, northern and district. From each region, 3 samples of Arctic diesel fuel were taken from various gas stations. The study found that the selected main indicators of diesel fuel: density, viscosity, fractional composition and low-temperature characteristics – differ from the normative values. The worst results were shown by diesel fuel samples from the northern part of the Republic of Sakha (Yakutia). Samples of arctic diesel fuel taken from the central part and district, generally meet the quality standards of GOST 305-82, but for low-temperature characteristics, do not meet the standard.

scholarly journals ECHINOCOCCOSIS OF LUNGS COMPLICATED BY PECILOMYCOSIS

2020 ◽  
Author(s):  
Adolat Vakhidova ◽  
◽  
Gavkhar Khudoyarova ◽  
Komil Boltaev ◽  
◽  
...  
Keyword(s):  
Medical Care ◽  
Large Scale ◽  
Biological Significance ◽  
Healthcare Sector ◽  
Main Role ◽  
Central Asian ◽  
Number Of Patients ◽  
Wide Range ◽  
The Republic

To date, large-scale targeted measures have been taken in the domestic healthcare sector to radically improve the quality and significantly expand the range of medical care provided to the population. In this direction, especially in improving the quality of treatment of echinococcosis, positive results have been achieved. Along with this, to improve the system of medical care, scientific-based results are required to assess the effectiveness of new methods of prevention and treatment of hydatids liver diseases. Among the most relevant aspects of the problem of echinococcosis are the identification of factors that affect the development of the disease, the causes of complications and relapses. It, along with numerous States, is also quite often found on the territory of Central Asian countries, which includes Uzbekistan. It is safe to say that echinococcosis today is one of the most important world problems of medical, veterinary and biological significance. Echinococcosis is a serious human disease that affects various organs, especially the liver and lungs, and more than 1.5 thousand operations are performed for it per year; only in terms of referrals to surgical clinics, the incidence rate ranges from 4 to 9 per 100 thousand people; the number of patients with complicated forms reaches 25-45% the number of postoperative complications – 20-30 %; lethality – 2-5 %. In some regions of the Republic, the incidence of echinococcosis in people as a result of indirect hemagglutination is 8-9%, according to autopsy data-2-3 %. The main role in the complex of anti-helminth measures continues to play a specific deworming of animals and humans. The success of deworming depends on highly effective and low-toxic anthelmintic agents, many of which, despite a wide range, do not meet modern requirements.

scholarly journals Efficiency of pelleting of sugar beet seeds in centrifugal pelleting machine

2020 ◽  
Vol 58 (3) ◽  
pp. 364-372
Author(s):  
V. R. Petrovets ◽  
D. A. Mikheyeu ◽  
V. P. Gnilozub
Keyword(s):  
Sugar Beet ◽  
Experimental Studies ◽  
Bentonite Clay ◽  
Spherical Shape ◽  
Good Alternative ◽  
Technological Parameters ◽  
The Republic ◽  
Domestic Variety ◽  
Finished Mixture

Seed pelleting is an efficient way to improve the sowing quality of seeds. Diverse positive effect of pelleting is mostly noticeable for beet seeds. Increased size and spherical shape of seeds with shell allows to use precision seeding technology, as well as fertilizers and protective agents being part of the shell, increase their sowing potential and finally increase yields. To obtain pelleted seeds, it is required to use a specialized line with a seed pelleting machine being the main equipment. An improved design of centrifugal batch-operated seed pelleting machine has been developed and manufactured in Belarusian State Agricultural Academy. To activate the process of rolling the shell in the mixing chamber of the pelleting machine, it was proposed to use separately installed blades. Based on theoretical and experimental studies, the main structural and technological parameters of the pelleting machine has been determined to ensure the highest quality of pelleted seeds. Seeds of sugar beet of the domestic variety “Polybel” obtained in a favorable climate were selected for experimental studies. Finished mixture based on bentonite clay was selected as a filler of the seed coat. After the coat formation, the insect-fungicidal dressing agent Prestige was applied to the seeds. The seeds of sugar beet of the domestic variety “Polybel” obtained on experimental pelleting machine showed high results in germination and yield. They are comparable to imported sugar beet hybrids. Pelleting of seeds of domestic varieties of sugar beet on the territory of the Republic of Belarus can become a good alternative to imported pelleted seeds, especially considering their cost, which significantly exceeds the cost of untreated seeds.

scholarly journals Experimental study of quality and electricity losses in low voltage rural electric networks

2021 ◽  
Vol 23 (3) ◽  
pp. 224-237
Author(s):  
O. S. Rakhimov ◽  
D. N. Mirzoev ◽  
E. I. Grachieva
Keyword(s):  
Low Voltage ◽  
Experimental Studies ◽  
Digital Information ◽  
Electric Networks ◽  
Daily Consumption ◽  
Measuring Device ◽  
Three Phase ◽  
The Republic ◽  
Information Database

THE PURPOSE. Due to the increase in the number of farms in the Devashtichsky district of the Sughd region of Tajikistan, over the past 3-4 years, a disproportionate distribution of electricity in the 0.4 kV network has been observed. Unbalance currents of phase loads in relation to asymmetric phase voltages at the terminals of consumers of a three-phase network cause additional losses of electricity, which can reach 21% of the standard losses. In the decree of the President of the Republic of Tajikistan dated May 10, 2009 No. 29 “On energy saving and reduction of electricity losses” it is indicated that there is a need to study the quality of electricity in rural 0.4 kV networks and its compliance with GOST 32144. 2013, as well as an assessment of losses electricity in its distribution structure is an important task in the field of rural electricity. METHODS. A single-line diagram of a 0.4 kV network with initial parameters, which were refined during the survey of the network, and the current loads of outgoing lines were investigated. Experimental studies of the quality of electricity and assessment of the level of losses in the low- voltage network were carried out using a complex measuring device «Energotester» PKE - A - C4. RESULTS. The studies allowed obtaining data on the daily consumption of electricity in individual outgoing lines, information on the characteristics of consumers, digital information (database) on indicators of the quality of electricity in low-voltage networks. CONCLUSIONS. It has been established that the main factors influencing the losses of electricity in low-voltage networks are: incommensurability of the power of transformers of transformers and consumers, uneven loading of individual phases, a significant effect of individual converters on the quality of energy. Measures are forecasted to reduce losses and improve the quality of electricity in low-voltage rural networks of 0.4 kV.

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