Choice of metadata Статьи
Page 4, Results: 70
Report on unfulfilled requests: 0
31.
Подробнее
24
K70
Koleskin, V. N.
The solving of the problem in the working zone. The numerical calculation of the model of the nizhnekamsk reactor for the styene production (Part -3). [Текст] / V. N. Koleskin // News of the national academy of sciences of the Kazakhstan. . - 2021. - №1. - P. 6-13
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
chemical reactor -- still granular layer -- catalyst -- ergun law -- stream function -- granular layer resistance factor -- Green's function pressure field -- velocity field -- layer resistance
Аннотация: The article deals with a mathematical modeling of an incompressible liquidflow in flat and radial contact units with the still granular layer and a creation on numerical realzation methods for the model.
Держатели документа:
WKU
Доп.точки доступа:
Yunusov, A.A.
Yunusova, A.A.
Shtern, P.G.
Lukyanova, A.V.
Zhmadullayev, D.K.
Ainamkulova, T.S.
Bugibaev, E.T.
K70
Koleskin, V. N.
The solving of the problem in the working zone. The numerical calculation of the model of the nizhnekamsk reactor for the styene production (Part -3). [Текст] / V. N. Koleskin // News of the national academy of sciences of the Kazakhstan. . - 2021. - №1. - P. 6-13
Рубрики: chemistry
Кл.слова (ненормированные):
chemical reactor -- still granular layer -- catalyst -- ergun law -- stream function -- granular layer resistance factor -- Green's function pressure field -- velocity field -- layer resistance
Аннотация: The article deals with a mathematical modeling of an incompressible liquidflow in flat and radial contact units with the still granular layer and a creation on numerical realzation methods for the model.
Держатели документа:
WKU
Доп.точки доступа:
Yunusov, A.A.
Yunusova, A.A.
Shtern, P.G.
Lukyanova, A.V.
Zhmadullayev, D.K.
Ainamkulova, T.S.
Bugibaev, E.T.
32.
Подробнее
33.131
M 97
MUSAYEVA, S. A.
IMPACT OF THE TEMPERATURE FACTOR ON THE VALUE OF HYDROSTATIC PRESSURE AT DRILLING GEOTHERMAL WELLS [Текст] / S. A. MUSAYEVA // Нефть и газ. - 2022. - №2. - с. 103-108
ББК 33.131
Рубрики: Бурение скважин
Кл.слова (ненормированные):
geothermal wells -- drilling mud -- alternative energy -- deep wells -- high temperatures
Аннотация: The article discusses the influence of the temperature factor on the value of hydrostatic pressure while drilling of geothermal wells using chemical reagents based on water - soluble polymers in the process of drilling deep wells, which ensure the stability of drilling fluids at high temperatures. As mentioned earlier, the regulation of hydrostatic pressure by increasing the drilling mud densityat high temperatures is inappropriate . Therefore, it is necessary to take measures to improve the sedimentation stability of drilling muds.
Держатели документа:
ЗГУ им М. Утемисова
M 97
MUSAYEVA, S. A.
IMPACT OF THE TEMPERATURE FACTOR ON THE VALUE OF HYDROSTATIC PRESSURE AT DRILLING GEOTHERMAL WELLS [Текст] / S. A. MUSAYEVA // Нефть и газ. - 2022. - №2. - с. 103-108
Рубрики: Бурение скважин
Кл.слова (ненормированные):
geothermal wells -- drilling mud -- alternative energy -- deep wells -- high temperatures
Аннотация: The article discusses the influence of the temperature factor on the value of hydrostatic pressure while drilling of geothermal wells using chemical reagents based on water - soluble polymers in the process of drilling deep wells, which ensure the stability of drilling fluids at high temperatures. As mentioned earlier, the regulation of hydrostatic pressure by increasing the drilling mud densityat high temperatures is inappropriate . Therefore, it is necessary to take measures to improve the sedimentation stability of drilling muds.
Держатели документа:
ЗГУ им М. Утемисова
33.
Подробнее
35
Y46
Yessenamanova, M. S.
The content and distribution of the trace elements in soils during the development of oil fields in the republic of Kalmykia. [Текст] / M. S. Yessenamanova, Ts. D. Davaeva, L. Kh. Sangadzhieva, B. V. Tsombueva [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 14-21
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
oil-contaminated soils -- heavy metals -- trace elements -- oil products -- drilling sites
Аннотация: The article presents the results of chemical analysis soils of drilling sites of the Sostinsky and Mezhozerny oil fields of the Republic of Kalmykia. The content of sodium ions is more than 2 times higher in both deposits. At the same time, the content of chlorides in some areas of the Mezhozerny field reaches its maximum. As a result, the soils are highly saline in terms of the degree of salinity and are mainly chloride-sulfate-sodium in terms of the type of salinity.
Держатели документа:
WKU
Доп.точки доступа:
Davaeva, Ts.D.
Sangadzhieva, L.Kh.
Tsombueva, B.V.
Sangadzhieva, O.S.
Yessenamanova, Zh.S.
Tlepbergenova, A.E.
Y46
Yessenamanova, M. S.
The content and distribution of the trace elements in soils during the development of oil fields in the republic of Kalmykia. [Текст] / M. S. Yessenamanova, Ts. D. Davaeva, L. Kh. Sangadzhieva, B. V. Tsombueva [et al.] // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 14-21
Рубрики: chemical Technology
Кл.слова (ненормированные):
oil-contaminated soils -- heavy metals -- trace elements -- oil products -- drilling sites
Аннотация: The article presents the results of chemical analysis soils of drilling sites of the Sostinsky and Mezhozerny oil fields of the Republic of Kalmykia. The content of sodium ions is more than 2 times higher in both deposits. At the same time, the content of chlorides in some areas of the Mezhozerny field reaches its maximum. As a result, the soils are highly saline in terms of the degree of salinity and are mainly chloride-sulfate-sodium in terms of the type of salinity.
Держатели документа:
WKU
Доп.точки доступа:
Davaeva, Ts.D.
Sangadzhieva, L.Kh.
Tsombueva, B.V.
Sangadzhieva, O.S.
Yessenamanova, Zh.S.
Tlepbergenova, A.E.
34.
Подробнее
35
Y46
Yessenamanova, M. S.
Content of heavy metals in the sea water of the northern Caspian Sea. [Текст] / M. S. Yessenamanova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 22-29
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
seawater samples -- heavy metals -- North Caspian deposits -- maximum permissible concentration (MPC) -- water pollution monitoring
Аннотация: The article presents the results of chemical analysis for the content of heavy metals in the waters of the fields in the northern part of the Caspian Sea.
Держатели документа:
WKU
Доп.точки доступа:
Zhakyayeva, D.
Ryszhan, A.
Yessenamanova, Zh.S.
Tlepbergenova, A.E.
Pendashteh, A.
Y46
Yessenamanova, M. S.
Content of heavy metals in the sea water of the northern Caspian Sea. [Текст] / M. S. Yessenamanova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 22-29
Рубрики: chemical Technology
Кл.слова (ненормированные):
seawater samples -- heavy metals -- North Caspian deposits -- maximum permissible concentration (MPC) -- water pollution monitoring
Аннотация: The article presents the results of chemical analysis for the content of heavy metals in the waters of the fields in the northern part of the Caspian Sea.
Держатели документа:
WKU
Доп.точки доступа:
Zhakyayeva, D.
Ryszhan, A.
Yessenamanova, Zh.S.
Tlepbergenova, A.E.
Pendashteh, A.
35.
Подробнее
35
K80
Kozhabekov, S. S.
Modification of copolymers based on olefin and maleic anhydride as pour point depressant for waxy oils. [Текст] / S. S. kozhabekov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 30-37
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
oil -- copolymers -- modification -- waxes -- fluidity -- rheometry -- pour point -- viscosity
Аннотация: In this work, we investigated a modification of a copolymer based on α-olefin (octadecene-1) (ODC) and maleic anhydride (MA) synthesized by the method of initiated radical polymerization. In the studies carried out, it was revealed that of all the synthesized copolymers based on maleic anhydride, the copolymer with α-octadecene was the most effective copolymer in reducing the viscosity of oil and TPT. In this work, a copolymer based on maleic anhydride and octadecene-1 (ODC – MA) was modified with primary amines – butylamine (BA), hexylamine (HA), hexadecylamine (HDA), octadecylamine (ODA), benzylamine (BzA).
Держатели документа:
WKU
Доп.точки доступа:
Zhubanov, A.A.
Makhmetova, A.R.
Abaev, T.B.
K80
Kozhabekov, S. S.
Modification of copolymers based on olefin and maleic anhydride as pour point depressant for waxy oils. [Текст] / S. S. kozhabekov // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 30-37
Рубрики: chemical Technology
Кл.слова (ненормированные):
oil -- copolymers -- modification -- waxes -- fluidity -- rheometry -- pour point -- viscosity
Аннотация: In this work, we investigated a modification of a copolymer based on α-olefin (octadecene-1) (ODC) and maleic anhydride (MA) synthesized by the method of initiated radical polymerization. In the studies carried out, it was revealed that of all the synthesized copolymers based on maleic anhydride, the copolymer with α-octadecene was the most effective copolymer in reducing the viscosity of oil and TPT. In this work, a copolymer based on maleic anhydride and octadecene-1 (ODC – MA) was modified with primary amines – butylamine (BA), hexylamine (HA), hexadecylamine (HDA), octadecylamine (ODA), benzylamine (BzA).
Держатели документа:
WKU
Доп.точки доступа:
Zhubanov, A.A.
Makhmetova, A.R.
Abaev, T.B.
36.
Подробнее
35
A44
Altayeva, A.
Study of gold extraction from stale tailings by agitation leaching. [Текст] / A. Altayeva, B. N. Surimbayev, L. S. Bolotova, Zh. Т. Bagasharova, Sh. K. Akilbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 89-94
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
stale tailings -- stale tailings of the processing plant -- leaching -- technogenic mineral formations -- gold
Аннотация: The object of research is technogenic mineral formations-tailings of the Bestube processing plant located within the Bestube gold field. Analytical and technological studies of stale tailings have been carried out. According to the results of analytical studies, the material composition of stale tails was established. The average gold content in stale tailings according to assay analyses is 0.565 g/t, silver 1.56 g/t. The tailings belong to the category of poor sulfide, oxidized raw materials. The main industrially valuable component in the tailings is gold, silver has a subordinate value, and other metals are not of industrial value. Mineralogical analysis established that stale tails are represented by quartz, muscovite, clinochlore, albite, dolomite. Studies were conducted on agitation leaching of stale tailings of the initial size (64.08% of the class –0.074 mm) and after additional grinding to the size of 90% of the class –0.074 mm. Reducing the size contributes to the dissolution of gold from the tailings: at the initial size, 66.28% of gold is dissolved, after regrinding the degree of dissolution of gold from the tailings increases to 87.23%. The results of research on agitation leaching of gold have shown a high efficiency of hydrometallurgical technology for processing stale tailings of a processing plant.
Держатели документа:
WKU
Доп.точки доступа:
Surimbayev, B. N.
Bolotova, L. S.
Bagasharova, Zh. Т.
Akilbekova, Sh. K.
A44
Altayeva, A.
Study of gold extraction from stale tailings by agitation leaching. [Текст] / A. Altayeva, B. N. Surimbayev, L. S. Bolotova, Zh. Т. Bagasharova, Sh. K. Akilbekova // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 89-94
Рубрики: chemical Technology
Кл.слова (ненормированные):
stale tailings -- stale tailings of the processing plant -- leaching -- technogenic mineral formations -- gold
Аннотация: The object of research is technogenic mineral formations-tailings of the Bestube processing plant located within the Bestube gold field. Analytical and technological studies of stale tailings have been carried out. According to the results of analytical studies, the material composition of stale tails was established. The average gold content in stale tailings according to assay analyses is 0.565 g/t, silver 1.56 g/t. The tailings belong to the category of poor sulfide, oxidized raw materials. The main industrially valuable component in the tailings is gold, silver has a subordinate value, and other metals are not of industrial value. Mineralogical analysis established that stale tails are represented by quartz, muscovite, clinochlore, albite, dolomite. Studies were conducted on agitation leaching of stale tailings of the initial size (64.08% of the class –0.074 mm) and after additional grinding to the size of 90% of the class –0.074 mm. Reducing the size contributes to the dissolution of gold from the tailings: at the initial size, 66.28% of gold is dissolved, after regrinding the degree of dissolution of gold from the tailings increases to 87.23%. The results of research on agitation leaching of gold have shown a high efficiency of hydrometallurgical technology for processing stale tailings of a processing plant.
Держатели документа:
WKU
Доп.точки доступа:
Surimbayev, B. N.
Bolotova, L. S.
Bagasharova, Zh. Т.
Akilbekova, Sh. K.
37.
Подробнее
24
K21
Karmanovskaya, N. V.
Public environmental monitoring of the state of snowpack in norilsk. [Текст] / N. V. Karmanovskaya, O. V. Nosova, A. V. Kaverzin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 95-103
ББК 24
Рубрики: chemistry
Кл.слова (ненормированные):
precipitation -- industrial area -- melt water -- chemical characteristics
Аннотация: It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.
Держатели документа:
WKU
Доп.точки доступа:
Nosova, O. V.
Kaverzin, A. V.
K21
Karmanovskaya, N. V.
Public environmental monitoring of the state of snowpack in norilsk. [Текст] / N. V. Karmanovskaya, O. V. Nosova, A. V. Kaverzin // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 95-103
Рубрики: chemistry
Кл.слова (ненормированные):
precipitation -- industrial area -- melt water -- chemical characteristics
Аннотация: It is considered that Norilsk ranks second in terms of atmospheric contamination. Industrial enterprises annually emit large amounts of sulphur dioxide, phenols, and heavy metal particles. The city is located within the Far North and is distinguished by the harsh climate of the subarctic type. The snow cover can lie from 244 to 277 days. Snow is a good sorbent; therefore, the snow cover accumulates solid and gaseous pollutants that enter it from the atmosphere with precipitation or are absorbed from it. The purpose of this study was to analyse the snow cover in the Norilsk industrial region and assess the state of atmospheric air in the winter. To achieve this goal, it is necessary to solve the following tasks: conduct a literature review on a given topic; take samples of snow in various industrial districts of Norilsk; study the dependence of the qualitative characteristics of snow on the sampling site; draw conclusions on the quality of snowpack in different areas of the industrial districts of Norilsk. In the course of the study, the following methods were used: organoleptic, visual, methods for determining water transparency, titrimetric analysis, etc. Heavy metal ions and sulphate ions were not detected in the thawed snow, so no industrial gas pollution was noted in the residential area. Most of the particulate contamination was caused by slagging of roads to improve vehicle traction.
Держатели документа:
WKU
Доп.точки доступа:
Nosova, O. V.
Kaverzin, A. V.
38.
Подробнее
35
K21
Karmanovskaya , N. V.
Public environmental monitoring of drinking water quality in the city of Norilsk. [Текст] / N. V. Karmanovskaya // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 104-111
ББК 35
Рубрики: chemical Technology
Кл.слова (ненормированные):
ecological situation -- industrial city -- water supply -- public utilities
Аннотация: According to UN estimates, the shortage of safe drinking water can become one of the most acute and pressing problems. The specificity of this problem for Russia is not a shortage of water resources, but their pollution and ongoing degradation of water bodies. The quality of water is understood as the totality of its properties associated with the nature and concentration of impurities in the water. Water analysis is the only tool for monitoring its condition and properties. During the experiment, a team of researchers took samples of drinking water from the water supply network in various districts of the Norilsk industrial region, studied the dependence of the quality characteristics of water on the location and sampling method. Based on the findings, conclusions on the quality of drinking water were drawn. During the experiment, the authors found that in terms of organoleptic indicators, drinking water in all areas of the NIR meets the requirements of Sanitary Rules and Regulations and GOST. Taking samples at three control points of the Norilsk industrial region, it has been proven that the water is soft and its salt content is mainly due to the presence of hardness salts. Having made the necessary analyses, the authors found that the presence of microorganisms in the water supply network of the NIR is not significant, the permanganate oxidisability indicator does not exceed the requirements of Sanitary Rules and Regulations.
Держатели документа:
WKU
K21
Karmanovskaya , N. V.
Public environmental monitoring of drinking water quality in the city of Norilsk. [Текст] / N. V. Karmanovskaya // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 104-111
Рубрики: chemical Technology
Кл.слова (ненормированные):
ecological situation -- industrial city -- water supply -- public utilities
Аннотация: According to UN estimates, the shortage of safe drinking water can become one of the most acute and pressing problems. The specificity of this problem for Russia is not a shortage of water resources, but their pollution and ongoing degradation of water bodies. The quality of water is understood as the totality of its properties associated with the nature and concentration of impurities in the water. Water analysis is the only tool for monitoring its condition and properties. During the experiment, a team of researchers took samples of drinking water from the water supply network in various districts of the Norilsk industrial region, studied the dependence of the quality characteristics of water on the location and sampling method. Based on the findings, conclusions on the quality of drinking water were drawn. During the experiment, the authors found that in terms of organoleptic indicators, drinking water in all areas of the NIR meets the requirements of Sanitary Rules and Regulations and GOST. Taking samples at three control points of the Norilsk industrial region, it has been proven that the water is soft and its salt content is mainly due to the presence of hardness salts. Having made the necessary analyses, the authors found that the presence of microorganisms in the water supply network of the NIR is not significant, the permanganate oxidisability indicator does not exceed the requirements of Sanitary Rules and Regulations.
Держатели документа:
WKU
39.
Подробнее
39.311
Y46
Yessentay, D. E.
Substantiation of application of anti-ice chemical reagents on automobile roads with cement concrete covering. [Текст] / D. E. Yessentay // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 112-118
ББК 39.311
Рубрики: Автомобильные дороги
Кл.слова (ненормированные):
slippery -- peeling -- chipping -- cement concrete strength -- deicing chemical reagent -- concentration of solutions
Аннотация: This article discusses the theoretical basis for the destruction of the crystal structure of snow and ice formations from the influence of chemical reagents. They established a natural dependence of the freezing force of snow and ice formations on the impact of various types of salt solutions. Also, laboratory studies have established the effect of the concentration of salt solutions on the loss of strength of cement concrete over time.
Держатели документа:
WKU
Доп.точки доступа:
Kiyalbaev, A. K.
Kiyalbay, S. N.
Borisуuk , N. V.
Y46
Yessentay, D. E.
Substantiation of application of anti-ice chemical reagents on automobile roads with cement concrete covering. [Текст] / D. E. Yessentay // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 112-118
Рубрики: Автомобильные дороги
Кл.слова (ненормированные):
slippery -- peeling -- chipping -- cement concrete strength -- deicing chemical reagent -- concentration of solutions
Аннотация: This article discusses the theoretical basis for the destruction of the crystal structure of snow and ice formations from the influence of chemical reagents. They established a natural dependence of the freezing force of snow and ice formations on the impact of various types of salt solutions. Also, laboratory studies have established the effect of the concentration of salt solutions on the loss of strength of cement concrete over time.
Держатели документа:
WKU
Доп.точки доступа:
Kiyalbaev, A. K.
Kiyalbay, S. N.
Borisуuk , N. V.
40.
Подробнее
28
T16
Таkibayeva, А. Т.
Flavonoids of populus balsamifera plants and their biological activity. [Текст] / А. Т. Таkibayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 147-150
ББК 28
Рубрики: Biology
Кл.слова (ненормированные):
the poplars -- flavonoids -- extraction -- biological activity
Аннотация: The work is devoted to the chemical studying of the composition of flavonoids of Populus balsamifera, the isolation of individual compounds, and the establishment of their structure. Balsamic poplar plants are a promising source of many biologically active substances, and in particular, flavonoids.
Держатели документа:
WKU
Доп.точки доступа:
Amirchan, A. A.
Kalkenova, A. T.
Kulakov, I. V.
T16
Таkibayeva, А. Т.
Flavonoids of populus balsamifera plants and their biological activity. [Текст] / А. Т. Таkibayeva // News of national academy of sciences of the republic of Kazakhstan. . - 2021. - №1. - P. 147-150
Рубрики: Biology
Кл.слова (ненормированные):
the poplars -- flavonoids -- extraction -- biological activity
Аннотация: The work is devoted to the chemical studying of the composition of flavonoids of Populus balsamifera, the isolation of individual compounds, and the establishment of their structure. Balsamic poplar plants are a promising source of many biologically active substances, and in particular, flavonoids.
Держатели документа:
WKU
Доп.точки доступа:
Amirchan, A. A.
Kalkenova, A. T.
Kulakov, I. V.
Page 4, Results: 70