scholarly journals Selection of a heating system based on climatic conditions of Uzbekistan and on calculations of the technical and economic indicators of alternative systems: A case study of the solar greenhouse with a transformable building

2021 ◽  
Vol 939 (1) ◽  
pp. 012003
Author(s):  
B Rasakhodzhaev ◽  
S Makhmudov ◽  
F Muminov
Keyword(s):  
Economic Efficiency ◽  
Research Work ◽  
Heating System ◽  
Climatic Conditions ◽  
Private Households ◽  
Alternative Systems ◽  
Solar Greenhouse ◽  
The Republic ◽  
Cost Of Materials ◽  
The Cost

Abstract This paper presents studies on the choice of a heating system based on calculations of economic efficiency and payback periods for alternative systems, a solar greenhouse with a transformable body. The purpose of the work is to carry out calculations to determine the consumption of fuel resources necessary to ensure the required amount of energy for the heating season: consumption of natural gas, solid fuel (coal) and electricity for heating a greenhouse with a transformable (adjustable) body. Analytical methods were used to determine the cost of materials and the main units of a greenhouse with a transformable (adjustable) body. Depending on the shape of the greenhouse, the total costs, economic efficiency and payback periods are determined. The research work carried out shows that, in terms of the cost of construction and consumption of materials, the developed greenhouse with transformable (adjustable) body are quite acceptable for its successful use among farmers and private households in the Republic of Uzbekistan. Calculation of economic efficiency and payback periods for greenhouses with a transformable housing allows you to choose the most acceptable heating system and technical characteristics of alternative systems acceptable for the climatic conditions of Uzbekistan.

scholarly journals Erection of solid columns of one-storey industrial buildings with bridge cranes made of high-strength sandy concrete and its economic efficiency

2021 ◽  
Vol 274 ◽  
pp. 03028
Author(s):  
Nikolay Palagin ◽  
Georgy Nikitin ◽  
Alexey Trunov
Keyword(s):  
Economic Efficiency ◽  
High Strength ◽  
Crushed Stone ◽  
Technical Literature ◽  
Total Cost ◽  
Industrial Buildings ◽  
Steel Consumption ◽  
The Republic ◽  
Cost Of Materials ◽  
The Cost

The use of high-strength sandy concrete (HSSC) is an alternative to high-strength crushed stone. Its use is profitable for those regions of Russia in which crushed stone is an imported building material. Thus, crushed stone is supplied to the Republic of Tatarstan (RT) from the Ural, and the local reserves of sand are significant. Authors presented the results of studies to determine the economic efficiency of solid columns’ erection in one-story industrial buildings with bridge cranes according to the 1.424.1-5 series from HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B80 classes. Studies have shown that in relation to Kazan, the use of HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B40 classes, depending on the size of the span, column spacing, floor height and lifting capacity of cranes, can reduce steel consumption by 43.2…71.5 %. At the same time, the total cost of materials (steel and concrete) when using heavy concrete of B20...B40 classes is 1.7 %...38.1 % lower than with HSSC60 and HSSC80. This is due to the sharp rise in the cost of concrete in the Russian market in the third quarter of 2002 and continuing to the present (second quarter of 2021). When recalculated before the indicated price increase, the use of HSSC60 and HSSC80 in comparison with heavy concrete of B20…B40 classes gives a decrease in the total cost of materials by 1.9...34.5 %. The results obtained are novel because in the scientific and technical literature there is no information about the design of these columns from the HSSC.

The use of natural conditions of the high alpine province of Dagestan for reproduction of prospective varieties and hybrids of potato

2021 ◽  
pp. 34-37
Author(s):  
В.К. Сердеров ◽  
Д.В. Сердерова
Keyword(s):  
Field Experiments ◽  
Climatic Conditions ◽  
High Yield ◽  
Potato Varieties ◽  
Caspian Lowland ◽  
The Republic ◽  
High Yielding Varieties ◽  
Almost All ◽  
The Cost ◽  
Mountain Province

Большое значение в увеличении продуктивности картофеля имеет внедрение в производство перспективных высокоурожайных сортов и гибридов, приспособленных к местным природно-климатическим условиям возделывания, от чего зависят эффективность отрасли и себестоимость продукции. Цель работы – изучить влияние климатических условий на продуктивность и качественные показатели сортов и гибридов картофеля, а также использование ими благоприятных почвенно-климатических условий высокогорья Республики Дагестан, для размножения и внедрения в производство новых перспективных, высокоурожайных, приспособленных к условиям среды выращивания сортов картофеля с комплексом хозяйственно-ценных признаков. Объектом изучения послужили сорта картофеля раннего, среднераннего и среднего сроков созревания российской, белорусской и иностранной селекции. Полевые опыты закладывали в 2014–2017 годах на высоте 2000–2200 м, на землях горного опорного пункта «Курахский» Курахского района и на равнинной провинции (Прикаспийской низменности) на территории дачного массива «Наука» Махачкалинского района Республики Дагестан. Схема посадки – 70×30 см, повторность – четырехкратная. Технология выращивания картофеля – гребневая. При проведении полевых опытов использовали общепринятые методики. Практически все сорта картофеля, выращенные на равнинной провинции, сформировали высокий урожай в первый год и при дальнейшем размножении в результате развития вирусных болезней резко снизили свои продуктивные качества. Наиболее высокая урожайность в среднем за три года отмечена у сортов Жуковский ранний (20,8 т/га), Импала (20,5 т/га), Невский (17,8 т/га), Предгорный (16,9 т/га) и Удача (16,3 т/га). В свою очередь, горная провинция Дагестана характеризовалась благоприятными почвенно-климатическими условиями для возделывания как продовольственного картофеля, так и для организации первичного семеноводства на безвирусной основе и размножения перспективных сортов этой культуры. В среднем за годы исследований в горной провинции по урожайности выделились сорта Сильвана (37,4 т/га), Удача (37,6 т/га), Рокко (33,3 т/га), Импала (31,7 т/га), Жуковский ранний (29,0 т/га), Предгорный (27,7 т/га) и Примобелла (27,7 т/га), а также гибриды № 12.40/17 (43,1 т/га) и № 13.61/61 (38,8 т/га). The introduction of promising high-yielding varieties and hybrids adapted to the local natural and climatic conditions of cultivation is of great importance in increasing the productivity of potatoes, which determines the efficiency of the industry and the cost of production. The aim of the work is to study the influence of climatic conditions on the productivity and quality indicators of potato varieties and hybrids, as well as their use of favorable soil and climatic conditions in the highlands of the Republic of Dagestan, for breeding and introducing into production new promising, high-yielding, adapted to the growing environment of potato varieties with a complex of economically valuable characteristics. The object of the study was potato varieties of early, mid-early and medium maturation periods of Russian, Belarusian and foreign selection. Field experiments were conducted in 2014–2017 at an altitude of 2000–2200 m, on the lands of the mountain stronghold Kurakhsky of the Kukhar district and on the plain province (the Caspian lowland) on the territory of the suburban area Nauka of the Makhachkala district of the Republic of Dagestan. The landing scheme is 70×30 cm, the repeatability is four times. The technology of growing potatoes is combed. When conducting field experiments, generally accepted methods were used. Almost all potato varieties grown in the lowland province formed a high yield in the first year and, with further propagation, as a result of the development of viral diseases, sharply reduced their productive qualities. The highest yield on average for three years was observed in the varieties Zhukovskiy ranniy (20.8 t/ha), Impala (20.5 t/ha), Nevsky (17.8 t/ha), Predgornyy (16.9 t/ha) and Udacha (16.3 t/ha). In turn, the mountain province of Dagestan was characterized by favorable soil and climatic conditions for the cultivation of both food potatoes, and for the organization of primary seed production on a virus-free basis and the reproduction of promising varieties of this crop. On average, over the years of research in the mountain province, the varieties Silvana (37.4 t/ha), Udacha (37.6 t/ha), Rocco (33.3 t/ha), Impala (31.7 t/ha), Zhukovskiy ranniy (29.0 t/ha), Predgornyy (27.7 t/ha) and Primobella (27.7 t/ha), as well as hybrids No.12.40/17 (43.1 t/ha) and No.13.61/61 (38.8 t/ha) were distinguished by yield.

scholarly journals ECONOMIC EFFICIENCY OF TABLE GRAPEVINE VARIETIES’ CULTIVATION

Russian vine ◽  
2020 ◽  
Vol 14 ◽  
pp. 85-89
Author(s):  
N.A Tikhomirova ◽  
◽  
M.R. Beibulatov ◽  
N.A. Urdenko ◽  
R.A. Buival ◽  
...  
Keyword(s):  
Economic Efficiency ◽  
Agricultural Practices ◽  
Climatic Conditions ◽  
Cost Of Care ◽  
Important Condition ◽  
High Productivity ◽  
Care Technology ◽  
The Cost ◽  
Grape Varieties ◽  
Intensive Development

The economic efficiency of the cultivation of grapes as a branch of agriculture depends on the adaptation of grape varieties to the soil and climatic conditions of the place of growth. When developing new agricultural practices and technological solutions for the cultivation of grapes, it is necessary to assess the econom-ic efficiency of the proposed innovative ap-proaches. The cultivation of such grape varie-ties is becoming important and relevant, which, with high productivity and the use of differen-tiated care technology, require minimal costs when servicing the bushes and harvesting. In-creasing labor productivity in the viticulture industry is the most important condition for the intensive development of production. One of these conditions today is the formation of a bush according to the technology element, the shape of a bush AZOS-1, which allows to re-duce the cost of care and harvesting of grapes. The conducted research on the technology of cultivation of table grape varieties in connec-tion with the use of a new form of bush made it possible to economically substantiate the economic efficiency of growing grapes.

scholarly journals A Review Paper on Advancements in Solar PV Technology, Environmental Impact of PV Cell Manufacturing

2021 ◽  
pp. 485-492
Author(s):  
V. Raja Sekhar ◽  
P. Pradeep
Keyword(s):  
Solar Cells ◽  
Environmental Impact ◽  
Research Work ◽  
Government Support ◽  
Technological Advancement ◽  
Solar Pv ◽  
Good Market ◽  
Cost Of Materials ◽  
The Cost ◽  
Photovoltaic Technologies

Technological advancement, reduction in the cost of materials, and Government support for sustainable development help improvement in solar PV technology in recent years. Photovoltaic technology is majorly employed to generated electricity worldwide in the renewable energy category. To establish a good market base for Solar PV the efficiency of solar cells plays a significant role. Presently, extensive research work is going for efficiency improvement of solar cells for commercial use. The efficiency of monocrystalline silicon solar cells has shown very good improvement year by year. It starts with only 15% in the 1950s and then increases to 17% in the 1970s and continuously increases up to 28% nowadays. The growth in solar photovoltaic technologies including worldwide status, materials for solar cells, efficiency, factor affecting the performance of PV modules, an overview of a cost analysis of PV, and its environmental impact are reviewed in this paper.

scholarly journals Requirements for agricultural production and environmental management in the conditions of the Republic of Azerbaijan

2016 ◽  
Vol 2 ◽  
pp. 28-32
Author(s):  
Shahmaliyeva S.M.
Keyword(s):  
Average Rate ◽  
Research Work ◽  
Normal Pressure ◽  
Climatic Conditions ◽  
Irrigated Agriculture ◽  
Average Intensity ◽  
Irrigation Water Use ◽  
The Republic ◽  
Conducting Research ◽  
The Village

The article was justified the development and introduction of irrigated agriculture watersaving technologies aimed at improving the efficiency of irrigation water use. With the advent of irrigated land in the village Gilyazi of modern sprinkler technologies, there was a need for its adaptation soil and climatic conditions of the region, which was the basis for carrying out research work on the sciencebased technologies with modern irrigation sprinkler Valley machines and circular front steps. Found that machines with circular Valley, there are two modifikacija: towed and nabukera (stationary) system of Valley. The number of support trucks: abuccima – up to 24 towed up to 9. Machine length, m: abuccima – to 857, towed up to 457. Water consumption 6...220 l/s (conditional limitation). The pressure at the hydrant...to 0.13 MPa 1.0 (although 1.0 MPa is very high pressure and normal pressure is in the range of 0.4...0.5 MPa). The average intensity of precipitation: 60...100 mm/h or 1...of 1.67 mm/min (sometimes more or less. depends on average rate of irrigation and type of sprinklers). Was done scientific justification on the selection of sprinklers Valley for irrigation of agricultural crops in the Khizi district of Azerbaijan Republic. Described terms of conducting research. The main limitations on the conditions of use of machines such as Valley.

scholarly journals Techniques for rational use of technical equipment in sunflower oilseeds production

2020 ◽  
Vol 27 ◽  
pp. 00012
Author(s):  
Faik Safiollin ◽  
Genadiy Minnullin ◽  
Salavat Suleymanov ◽  
Nikolai Loginov ◽  
Dieter Trautz
Keyword(s):  
Climatic Conditions ◽  
Agricultural Technology ◽  
Technical Equipment ◽  
Rational Use ◽  
Main Crop ◽  
Net Profit ◽  
Oilseed Production ◽  
The Republic ◽  
Technological Means ◽  
The Cost

The paper summarizes the 5-year experimental data of the authors on the study of various technologies for sunflower cultivation in the soil and climatic conditions of the Republic of Tatarstan. Particular attention is paid to improving the methods of rational use of modern technological means with regards to the biological characteristics of the studied culture. It has been established that the classical technology of sunflower cultivation with deepening of the arable layer, diagonal closing of moisture, presowing cultivation to the depth of 6-8 cm, placement of rows in the South-North direction pre- and post- sowing harrowing and inter-row cultivation provides 93 % of the planned yield. The profitability of oilseed production is 69.2 %, and net profit is 13.7 thousand rubles per hectare. 7.4 thousand rubles of proceedings in cash comes to an enterprise from the sale of 1 ton of grown products. In large holding agricultural entities of Tatarstan with sunflower areas of more than 250-300 hectares, weed control using the Clearfield system excludes harrowing of crops and inter-row cultivation. The use of selective herbicide intended only for a single hybrid allows the 70 to 100 % weeds destruction without damaging the main crop. The economic indicators of the mixture of the developed agricultural technology with chemical crops weeding are quite high. Specifically, the profitability is 59.6 % and the cost of production of 1 ton of oilseeds is lower than its sales price by 6.7 thousand rubles.

ROLE AND PLACE OF IRRIGATED AGRICULTURE IN THE PRODUCTION OF AGRICULTURAL PRODUCTS AND ITS ECONOMIC EFFICIENCY (experience of the Republic of Tatarstan)

2021 ◽  
Vol 16 (3) ◽  
pp. 160-166
Author(s):  
Marsel Khismatullin ◽  
Mars Khismatullin ◽  
Ayrat Valiev ◽  
Rahim Ullah ◽  
Aleksandr Komissarov
Keyword(s):  
Water Supply ◽  
Economic Efficiency ◽  
Structural Changes ◽  
Direct Costs ◽  
Climatic Conditions ◽  
Irrigated Agriculture ◽  
Federal State ◽  
Vegetable Crops ◽  
Pumping Stations ◽  
The Republic

The development of globalization processes and, as a result, “blurring of borders” between countries give rise to fierce competition in food markets. In such conditions, ensuring food security largely depends on the efficiency of agricultural production. One of the factors of its stability, regardless of the influence of weather and climatic conditions, especially in areas of risky agriculture, including the Republic of Tatarstan, is irrigation. The research was carried out to assess the current state of the development of irrigated agriculture and its economic efficiency in the Republic of Tatarstan. The efficiency of irrigation was studied in Arsk and Laishevsky municipal districts of the Republic of Tatarstan when water was supplied, respectively, by diesel (“Kyrlay” LLC) and electrified pumping stations (“Narmonka” LLC). The object of research is potatoes on a total area of 258 hectares. It is not clear how it is possible to conduct research in different farms with different methods of water supply, and to carry out calculations for the total area. The costs of irrigation with 5-fold irrigation with water supply by electrified pumping stations paid off 11.9 times. Direct costs per 1 hectare of potatoes with a planned yield of 250 c/ha amounted to 110,590 rubles/ha, including 5-time irrigation - 10,235 rubles/ha, or 9.2%. The cost of production during irrigation decreases, in comparison with cultivation without irrigation, 2 times or more. A ruble of direct costs for irrigation provides additional products worth more than 12 rubles. According to Federal State Budgetary Institution “Tatmeliovodkhoz” Management”, it is much more profitable to grow fruit and berry and vegetable crops on irrigation. This should push for structural changes in favor of irrigated production of highly marginal crops

scholarly journals Decreasing cost of heat pump heat supply systemby changing first circuit collector

2020 ◽  
Vol 22 (1) ◽  
pp. 28-37
Author(s):  
I. Hallyyev ◽  
K. H. Gilfanov
Keyword(s):  
Comparative Analysis ◽  
Heat Pump ◽  
Solar Collector ◽  
Heating System ◽  
Primary Circuit ◽  
Angle Of Incidence ◽  
Combined System ◽  
The Republic ◽  
Main Components ◽  
The Cost

The aim of this work is to reduce the cost of the heat pump heating system by using a solar collector in the primary circuit of the heat pump. It is known that the price of material and installation of the primary circuit collector is 30% of the total cost of the heat pump heating system. The use of a solar collector in the primary circuit of a heat pump eliminates the need for drilling or underground installation of a low-potential thermal energy collector. The rejection of the classic types of collectors: horizontal collectors and vertical probes, also has a positive environmental effect on the soil. The combined use of a solar collector and a heat pump will add variability in the layout of the heat pump heating system. The article presents the results of a theoretical study of the feasibility of operating solar collectors at the latitudes of the Republic of Tatarstan. A comparative analysis of various types of heat pump and solar collector is given, based on which the main components of the combined system were selected. The work includes calculations of the required power and surface area of the absorption of the solar collector. The results of a comparative analysis of the performance of the solar collector are presented, depending on the angle of incidence of sunlight and the average level of insolation. As a result of the work, it was determined that the use of a solar collector in the primary circuit of a heat pump will be twice cheaper compared to horizontal collectors and 4 times compared to vertical probes.

scholarly journals ECONOMIC EFFICIENCY OF TOMATO HYBRIDS CULTIVATION ON COCONUT SUBSTRATE IN WINTER-SPRING TURNOVER IN THE CONDITIONS OF DAGESTAN

2020 ◽  
Vol 15 (3) ◽  
pp. 5-9
Author(s):  
Patimat Akhmedova
Keyword(s):  
Economic Efficiency ◽  
Unit Area ◽  
Climatic Conditions ◽  
Planting Date ◽  
Optimal Timing ◽  
Net Income ◽  
Factor B ◽  
Yield Level ◽  
The Republic

The aim of the work is to evaluate new F1 tomato hybrids in the winter-spring circulation, to identify the optimal timing of their planting in protected ground, to determine the most economically promising of them for the natural and climatic conditions of Dagestan. The studies were carried out in 2018–2020 in the greenhouse facilities of LLC “Agro-AS” of the Republic of Dagestan. The scheme of the two-factor experiment provided for the study of the following options: tomato hybrid (factor A) - mid-ripening hybrid Tivay 12 F1, mid-ripening hybrid T-34 F1, late-ripening hybrid Pink Ball F1; transplanting date (factor B) - early (January 10), medium (January 20), late (January 30). Sowing seeds for growing seedlings was carried out for each planting date, respectively, November 20, November 30 and December 10. Repetition 3 times, the area of the accounting plot - 2.5 m2. The largest yield was formed when the seedlings were planted on January 20, the yield of hybrids in total for 4.5 months was 23.0 ... 28.0 kg/m2. When planting seedlings on 10.01, it decreased by 0.55 ... 1.79 kg/m2, and on 30.01 - by 1.91 ... 2.56 kg/ m2. According to the yield level, the results of the tasting assessment of fruits and the economic efficiency of production, the hybrids represent the following decreasing series: T-34 F1> Tivay 12 F1> Pink Ball F1. Of the tested varieties, the domestic hybrid T-34 F1 and the Dutch hybrid Tivay 12 F1 are the most suitable for growing in protected soil in Dagestan. Economically more efficient is the time of planting seedlings in the substrate in the winter-spring turnover in the suburbs of Makhachkala on January 20, which provides the highest yield and net income per unit area

scholarly journals Sunflower productivity and gross oil production on the grey forest soil of the republic of Tatarstan under the use of growth regulators

2020 ◽  
Vol 17 ◽  
pp. 00020
Author(s):  
Vladimir P. Vladimirov ◽  
Evgeniy M. Chugunov ◽  
Antonina A. Mostyakova ◽  
Arsen A. Ilgamov
Keyword(s):  
Forest Soil ◽  
Growth Regulators ◽  
Economic Efficiency ◽  
Growth Regulator ◽  
Oil Content ◽  
Maximum Yield ◽  
Oil Production ◽  
Climatic Conditions ◽  
Grey Forest Soil ◽  
The Republic

An important source for increasing the sunflower yield and getting high economic efficiency consists of improving agricultural techniques for cultivation, in particular, soil and climatic conditions. Using growth regulators is one such technique. This research studies the effectiveness of the complex use of growth regulators when the treatment of seeds before planting is combined with the sprinkling of actual plants. During the whole period of the 4-year study, the maximum yield of seeds (3.233 tons/hectare), the highest oil content (52.95 %), and the gross oil production level (1713.8 kg/hectare) were obtained under the use of Zirkon growth regulator.

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