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Journal articles on the topic 'Enterprise Reservoir'
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1
Zhu, Yanmei, Weibin Huang, Shijun Chen, Guangwen Ma, and Yue Liu. "Profitability improvement of a reservoir power station based on virtual reservoir bidding." Water Policy 23, no. 2 (March 3, 2021): 432–46. http://dx.doi.org/10.2166/wp.2021.085.
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Abstract Compared with a run-of-river power station, a reservoir power station (RPS), with the capacity of a seasonal regulation function and more, has the unique and irreplaceable attributes of its role in the power grid and society at large. However, under the current power system and market environment in China, these attributes cannot be effectively utilised, resulting in heavy losses to enterprises. It is inevitable for RPSs to participate in the market; therefore, how to improve the profitability of RPS enterprises has become an urgent problem requiring a solution. Based on the control effect on run-off of RPS in a river basin, a new cascade hydropower bidding method and the associated bidding process are proposed. The market entities of the new bidding method are composed of cascade hydropower joints with the RPS as the boundary. The bidding unit benefit-sharing mechanism is constructed, and the accounting method for the benefit-sharing price of the RPS is established, which finally achieves the goal of improving the profitability of the RPS enterprise.
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Guo, Li Ping, Ju Mei Liu, and Shuang Kou Chen. "Water Environment Risk Assessment System and Practice of Management for the Three Gorges Reservoir Based on List Method." Applied Mechanics and Materials 71-78 (July 2011): 4288–92. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4288.
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In view of the water impact of environmental risk of industrial enterprises in the Three Gorges Reservoir, based on the existing methods of water environmental risk assessment and integrated the Germany detailed list assessment method; we have established a brand-new index system which could meet with the Three Gorges Reservoir water environment risk evaluation, and the system has the feature of quantitative indicators and risk classification. Site Case analysis showed that: evaluation results and the qualitative judgment are on the spot consistent with the environment Supervisory department, which demonstrated that the risk assessment system is reasonable and has easier operability. Meanwhile the system could help the enterprise and the environment Supervisory department to investigate water environment hidden danger, reduce the enterprise water environment risk effectively and provide the scientific basis for the environment Supervisory management's decision-making and the management.
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Kolopaking, Lala M. "Village Based Climate Change Adaptation and Mitigation Activities Development in Indonesia: Challenges and Opportunities." Engineering Management Research 5, no. 2 (October 27, 2016): 72. http://dx.doi.org/10.5539/emr.v5n2p72.
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Government funds which are distributed to village government in Indonesia by Law No. 6 Year 2014 on Village is a national policy alternative to finance development of climate change adaptation and mitigation activities. According to pilot development in several regions on agro-forestry, bio-energy development, green seaweed industry, and restoration of reservoir; they were designed on development plan in the village and regional level which interconnected to national development plan. Adaption and mitigation activities should strengthening community based green social enterprises and engaging inter-village cooperation development programs for starting up or up-scaling green businesses. It managed as activity of social enterprise, so-called Village Organization Owned Enterprise called Badan Usaha Milik Desa (<em>BUMDes</em>) or Joint Villages Organization Owned Enterprise (<em>BUMDes Bersama</em>), or as the co-operative. The government funds could be blended in such a way with other funds sources (blending finance) for developing adaptation and mitigation of climate change activities.
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Baktybaeva, Zulfiya B., Andrey A. Kulagin, Guzel F. Gabidullina, and Tatiana K. Larionova. "Ecological and hygienic assessment of the technogenic reservoir state of the gold extraction enterprise (Zauralye of the Republic of Bashkortostan)." Hygiene and sanitation 99, no. 9 (October 20, 2020): 911–17. http://dx.doi.org/10.47470/0016-9900-2020-99-9-911-917.
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Introduction. The population using waste man-made water reservoirs for recreation and providing household needs can be a potential health risk. Such pollutants as heavy metals do not undergo decomposition processes. They accumulate in the biotic and abiotic components of the reservoir. Subsequently, hazardous toxicants can enter the human body through food chains. An ecological and hygienic assessment of the state of the waste reverse reservoir of the Semyonov gold recovery plant has been carried out. Material and methods. The object of the study is located in the Zauralye of the Republic of Bashkortostan at the geographical coordinates 52° 30’20″ N, 58° 19′48″ E. The content of heavy metals (Zn, Cu, Pb, and Cd) in water, bottom sediments and biomass of aquatic macrophyte (Potamogeton perfoliatus L.) was studied. In the bottom sediments, mobile forms of metals have been detected. They are extracted by an acetate-ammonium buffer with pH = 4.8 Results. It has been revealed that in water the concentration of heavy metals is higher than the maximum permissible concentrations for fishery reservoirs: 19-27 times for copper, 10-24 times for zinc, 2.7-5.8 times for lead, 1-1.4 times for cadmium. Exceeding the standards for water bodies for drinking, domestic and cultural water use is recorded for cadmium (6 times) and lead (2.5 times). In bottom sediments, the zinc content of mobile forms is 372.00 ± 28.51 mg/kg, copper - 144.37 ± 4.08 mg/kg, lead - 14.09 ± 1.48 mg/kg, cadmium - 0.036 ± 0.002 mg/kg. The total index (ZC), reflecting the additive excess of the background, is 1686, which corresponds to an extremely high level of man-made pollution of bottom sediments. The concentrations of heavy metals in the aboveground and underground organs of Potamogeton perfoliatus L. are much higher than the background levels. Conclusion. The waste reverse reservoir of the Semenov gold extraction factory is potentially dangerous to the local population health when it is used for breeding poultry, watering cattle, and fishing. The activities aimed at improving the environmental and hygiene situation in the territory of the locality are imperative.
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Kalybekov, Tursyn, Manarbek Sandibekov, Kanay Rysbekov, and Yryszhan Zhakypbek. "Substantiation of ways to reclaim the space of the previously mined-out quarries for the recreational purposes." E3S Web of Conferences 123 (2019): 01004. http://dx.doi.org/10.1051/e3sconf/201912301004.
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Opencast fields mining leads to land disturbance when conducting mining operations and storing of overburden rocks. The timely reclaiming of the disturbed lands according to the legislation requirements is an immediate duty of the subsoil user. The reclamation of the previously mined-out space of quarries refers to an extremely important tasks of the mining enterprise. The use of water management direction in reclamation assumes the use of previously mined-out space of a quarry to create the water reservoir through various methods of rehabilitation. There are presented various ways of designing the coastal zone of the created artificial water reservoirs in the previously mined-out space of the quarries located worldwide, which are used for the recreational purposes. The various profiles of slopes of artificial water reservoirs in a quarry with more low gradients, suitable for swimming and recreation are shown. Designing of a coastal area on the site of a quarry, intended for water reservoirs, depends on the water level position in the created body of water. The water reservoir, as the lake of artificial origin, created on the former quarry site, is shown. The purpose of the article is to substantiate the methodological approaches and engineering solutions concerning reclamation of the mined-out space after the opencast mining for the recreational purposes.
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Kocot, Maria. "INTERNET PROSUMPTION IN THE ASPECT OF ENTERPRISE COMPETITIVENESS." Zeszyty Naukowe Wyższej Szkoły Humanitas Zarządzanie 22, no. 2 (June 30, 2021): 53–66. http://dx.doi.org/10.5604/01.3001.0015.0038.
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The article focuses on presenting the role of internet prosumption as a source of competitivenessof a modern enterprise. The boundaries between production and consumption processes areblurring. The prosumption relationship will be strengthened thanks to the progressive technological changes, especially the development of the Internet. Internet prosumers, by expressing their opposition to standardized production, become a reservoir of “new knowledge”. which in turn becomes the seed of innovation of all kinds. These activities lead to the expansion of the group of satisfied customers, consolidation of the company’s market position and, as a result, an increase in its competitiveness. The aim of the article is to present the importance of internet prosumption as a source of enterprise competitiveness. The analysis was summed up in the original model, which indicated that establishing a pro-consumer system becomes an external source of competitiveness. The article highlights the role of the Internet and ICT as a catalyst for effective communication between the consumer and the provider.
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Fangping, Li, Yang Yuguo, and Wu Yue. "The Optimization of Reservoir Based on the Combination of ABC Classification Method and Linear Programming Method." International Journal of Business and Management 11, no. 11 (October 26, 2016): 156. http://dx.doi.org/10.5539/ijbm.v11n11p156.
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With the optimization objective of all the goods’ delivery time, this article presents reasonable storage optimum proposal through analysis of the order data of an enterprise warehouse. Firstly, establish a mathematical model by linear programming method in order to get an ideal and accurate storage program and secondly on this basis, combine practical storage location to reach final storage program by optimizing storage location reached by ABC classification method.
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Ansorge, Libor, Pavel Vojtko, Veronika Hamanová, Jakub Hrubý, and Martin Dočkal. "Srovnání vodní stopy VE Fláje a VE Přísečnice s uvažováním alokace podle ekonomické hodnoty užitků vodní nádrže." Entecho 3, no. 2 (December 23, 2020): 7–11. http://dx.doi.org/10.35933/entecho.2020.005.
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CZ: V předloženém článku je popsána srovnávací studie vodní stopy elektrické energie vyráběné ve dvou vodních elektrárnách provozovaných státním podnikem Povodí Ohře na vodárenských nádržích Přísečnice a Fláje v Krušných horách. Pro výpočet vodní stopy byla použita metoda hrubé spotřeby, která uvažuje ztráty vody z nádrže na úrovni výparu z hladiny. Protože výroba elektrické energie na vodárenské nádrži je jen doplňkovým užitkem, který poskytuje vodní nádrž, bylo třeba rozdělit ztráty vody z nádrže mezi jednotlivé užitky poskytované vodní nádrží. Pro alokaci ztrát výparem mezi jednotlivé užitky byla použita alokace na základě ekonomické hodnoty jednotlivých užitků. Ztráty vody alokované na výrobu elektrické energie představují méně než 1 % celkových ztrát. Studie ukázala, že vodní stopa elektrické energie vyráběné ve vodní elektrárně Přísečnice je cca dvakrát větší než vodní stopa elektrické energie vyráběné ve vodní elektrárně Fláje, zejména z důvodu rozdílné morfologie obou nádrží. Hodnota vodní stopy elektrické energie vyrobené v obou posuzovaných elektrárnách je srovnatelná s literárními údaji o vodní stopě vodních elektráren z ČR i světa. EN: The submitted article describes a comparative study of the water footprint of electricity produced in two hydroelectric plants operated by Povodí Ohře, a state enterprise, on the water reservoirs of Přísečnice and Fláje in the Ore Mountains. A gross consumption method was used to calculate the water footprint, which considers water losses from the reservoir at the level of the evaporation from the water surface. Since electricity generation on the water tank is only an additional purpose provided by the water tank, it was necessary to divide the water losses from the reservoir among the various purposes provided by the reservoir. Allocation based on the economic value of the individual purpose was used to allocate losses by evaporation to individual purposes. Water losses allocated to power generation account for less than 1% of total losses. The study showed that the water footprint of the electricity produced in the Přísečnice hydropower station is about 2 times larger than the water footprint produced in the Fláje hydropower station, mainly due to the different morphology of the two reservoirs. The water footprint value of the electricity produced in two hydropower stations assessed is comparable to literary data on the water footprint of hydroelectric power plants from the Czech Republic and the world.
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Yurina, Natalya, Denis Yurin, Irina Astakhova, Tatyana Shcherbatova, and Igor Shcherbatov. "The study of the suitability for use in agriculture of sludge and hydrochemical indicators of water in the reservoirs of the fish farm LLC “Albashi”." E3S Web of Conferences 175 (2020): 02001. http://dx.doi.org/10.1051/e3sconf/202017502001.
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The study of suitability for the use in agriculture of sludge deposits and hydrochemical indices of water bodies of fish-growing enterprise of LLC “Albashi” were carried out. It is an enterprise engaged in breeding and growing pond fish and sturgeon in pools and gardens, crayfish, growing aquapon greens. Fresh water bodies of reservoir type LLC “Albashi” contain a large number of bottom deposits. The layer of sludge deposits on the bottom in places reaches the power of 2-5 meters, and the underground power is difficult. Bottom sediments were taken from a depth of 1.0-1.2 m from the surface. The hydrochemical regime of the studied water bodies fully corresponds to the cultivation of aquaculture objects and hydroponic plants. Sufficient suspended matter in water (8.2 mg/dm3). The complete absence of dichlorodiphenyl trichloroethane, its metabolites and pesticides characterizes the products produced as environmentally safe. Consequently, bottom sediment site under study can be considered suitable for agricultural production.
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Zhu, Ziming, Yuanzhen Song, and Menglin Qin. "Research on Evolutionary Game of Engineering Community Members from the Perspective of Engineering Ethics." E3S Web of Conferences 194 (2020): 05003. http://dx.doi.org/10.1051/e3sconf/202019405003.
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Engineering ethics is a system of ethical principles applied to engineering, which plays the role of value guidance and criterion evaluation in engineering construction activities. Based on engineering ethics, writers review the Sanmenxia Reservoir Project, and use system dynamics to systematically study the evolutionary game of engineering community members, including government, enterprise, and people, involved in the engineering activities. The results show that the engineering community is a heterogeneous community with complex game behaviors, and the correct ethical choice is the key factor that promotes the evolution of the community members to cooperative dynamic equilibrium. Good management of ethical commitment, emphasis on professionalism and public services, strengthening risk alert and avoidance are effective ways for members of the engineering community to form a cooperative game, avoid tragedy of public resources, and ultimately ensure the orderly development of projects.
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Kostrykin, Dmitriy Alekseevich. "Fishing gear and devices for catching fish from fish ponds." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2020, no. 2 (June 30, 2020): 75–81. http://dx.doi.org/10.24143/2072-9502-2020-2-75-81.
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The article is focused on the problems of protection of biological resources and their habitats, the construction of new and improvement of existing fish breeding enterprises, the introduction of modern automation and mechanization of the most labor-intensive stages in the production of fish is a set of priority measures for the development of fish farming aimed at increasing fish production in inland freshwater bodies. Harvesting the fish ponds, regardless of their category, is a difficult and energy-intensive process. Choosing the type of fishing gear and fishing methods used to catch fish ponds primarily depends on the type of reservoir, the state of its hydraulic char-acteristics, as well as the type of fish caught and the time of year. The main categories of water bodies by the method of fish fishing and their features are considered. The used fishing gears are divided into 3 groups according to the principle of fish retention: entangling nets, strainers and sta-tionary gears (traps). It is noted that when fishing in the ponds, it is necessary to take into account the behavior and distribution of the fish. The effective methods for catching pond fish with different fishing gear are presented. The choice of the optimal fishing gear or device for fishing ponds will allow you to clearly plan and coordinate the work of the enterprise, since pond fishing is carried out in the shortest possible time, depending on the timing and needs of the market.
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Ayala, Hana. "Transnational Resort: a Transformative Investment in the Global Knowledge Economy." Journal of the Knowledge Economy 11, no. 4 (November 23, 2019): 1573–95. http://dx.doi.org/10.1007/s13132-019-00621-4.
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AbstractThe global ascent of the knowledge economy has opened an unprecedented opportunity to value the earth’s evolutionary and ecological fabric as a transnational reservoir of latent scientific knowledge that could define this emerging economy as profoundly as oil has shaped the industrial economy. It has also uniquely positioned the international resort enterprise to bring science into the heart of a business model in which quality and prestige grow along with investments in geographically unrestrained scientific discoveries and which delivers formidable legacy dividends in its defiance of monopoly over the funded research. The article expands on these original assertions, the accomplishments they ignited, and the academic credentials that fortify them, with an emphasis on the business model’s capacity to build novel economic foundations for global conservation and to empower basic science at the most challenging scale above national jurisdictions where it merits designation as common heritage of mankind. It discloses how the resort sites’ label as premier real estate wastes many of these sites’ worth as crossroads of wonder-packed connections among variously distant ecosystems, geological formations, and other pillars of the earth’s architecture. It translates this disclosure into a blueprint, for new-generation resorts, of the power to align a private enterprise system with appreciation of knowledge as a precursor of future knowledge and, in the process, to chart a transformative course for the global knowledge economy. An island portfolio in the Gulf of Panama and the Hawaiian island of Lanai are profiled in their distinctive potentials to emblematize the rewards.
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Badryzlova, Nina Sergeevna. "Comparative characteristics of the conditions for harvesting, transportation and spawning of pike perch in fish farms in Kazakhstan." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 8 (July 27, 2021): 43–55. http://dx.doi.org/10.33920/sel-09-2108-04.
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A description of biotechnical methods of harvesting pike perch in natural reservoirs, methods of catching pike perch spawners, keeping in adaptation cages and transporting pike perch from fishing sites to the farm is given. Pike perch breeders were caught from the reservoirs with fixed and floating nets during the period: in the Kapshagai reservoir from 10 to 20 April; in the Syrdarya river — from April 20 to May 5. The adaptation was carried out in cages located in the coastal zone. Transportation to the fish farm was carried out in live fish tanks with a volume of 1 and 3 m³ with water aeration. The reproduction of pike perch was carried out in two fish farms of the Republic of Kazakhstan. The data on spawning of pike perch in two ways are given: in cages on nests; as well as the receipt of reproduction products by the factory method from “flowing” producers. In the first case, females and males were placed in cages in a ratio of 1:1 and 1:2; a spawning nest was installed in each cage and spawning was monitored. In the second case, from the “flowing” pike perch breeders ready for spawning, reproductive products (eggs and sperm) were obtained, fertilization and degluing were carried out with a suspension of white clay. The monitoring of hydrochemical indicators was constantly carried out, the dates of the beginning and end of spawning of pike perch were determined. The article presents the fish-breeding and biological characteristics of pike perch producers participating in spawning. The mass of spawned pike perch females in LLP “Halyk Balyk” ranged from 2 kg to 2.5 kg, males — 1.5–2.5 kg; females weighing 2.1–2.6 kg were used in the Republican State Enterprise “Kamyshly-Bashsky Fish Hatchery”; males — from 1.2 kg to 2.4 kg. Based on the results of the research, biotechnical standards were developed for the preparation of pike perch producers in water bodies, for transportation to fish farms, standards for spawning of pike perch in various ways.
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Vyshnevskyi, Viktor I., and Serhii A. Shevchuk. "Use of remote sensing data to study ice cover in the Dnipro Reservoirs." Journal of Geology, Geography and Geoecology 29, no. 1 (April 11, 2020): 206–16. http://dx.doi.org/10.15421/112019.
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The information on the use of remote sensing data when studying the ice cover of the Dnipro Reservoirs is given. The main source of data was the images obtained by the satellites Sentinel-2, Landsat, Aqua and Terra. In addition, the observation data from the hydrological and meteorological stations were used. The combination of these data enabled to study the patterns of ice regime in the Dnipro Reservoirs, to specify some features that cannot be determined by regular monitoring. A typical feature of the ice cover of all reservoirs of the Dnipro Cascade, besides the Kyivske one, is the impact of hydropower plants (HPP) located upstream. The runoff of the rivers flowing into the Kyivske Reservoir significantly influences its ice cover. This is especially relates to the period of spring flood. Besides the Dnipro and the Pripyat Rivers, relatively small the Teteriv and the Irpin Rivers flowing from the south-west to the north-east have a rather significant effect on the ice cover of this reservoir. The distribution of ice cover in the Kanivske Reservoir, compared to the Kanivske one, is significantly less. In addition to more southern location and warmer climate, the city of Kyiv also influences the ice cover on it, namely due to the discharge of wastewater from several industrial enterprises, Kyivska TPP-5 and Bortnitska Station of Aeration are ones of them. The impact of Trypilska TPP, which located downstream, is also significant. The longest duration of ice cover in the Kanivske Reservoir is observed in its south-eastern part. A point of interest about the Kremenchuts’ke Reservoir is the fact that the ice cover in it remains for the longest period compared to the other reservoirs. The largest duration of ice cover in this reservoir is observed in the Sulska Bay. The typical feature of the Kamianske Reservoir is the accumulation of ice in its narrow parts. Within the Dniprovske Reservoir, the longest freezing period is observed in the Samara Bay. Besides the operation of hydropower station, the industrial enterprises of Kamianske town and Dnipro city have a great effect on the upper part of this reservoir. There are significant differences in the ice regime of the different parts of the Kakhovske Reservoir, which extends from the north-east to the south-west. The distribution of ice in its shallow north-eastern part is usually much larger than in narrower south-western part.
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Rodríguez-Pérez, Ángel Mariano, and Inmaculada Pulido-Calvo. "Analysis and viability of microturbines in hydraulic networks: a case study." Journal of Water Supply: Research and Technology-Aqua 68, no. 6 (June 10, 2019): 474–82. http://dx.doi.org/10.2166/aqua.2019.161.
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Abstract The purpose of this study is to examine the use of hydraulic microturbines to make the most of the hydraulic energy available in pressurized water distribution systems. The study was carried out on suitable points of pressurized hydraulic networks, which are managed by Giahsa, a public enterprise responsible for the management of the municipal communities of services (MAS) in the province of Huelva, southwestern Spain. The distribution system situated between the Cabeza del Pasto reservoir in the Andévalo area (Huelva, Spain) and the wastewater treatment plant (WWTP) in the municipality of Puebla de Guzmán (Huelva, Spain) was examined. To obtain the exact amount of energy which reaches the microturbine, the energy conservation equation considering the loss of energy from friction was used. The results show different locations where it is possible to carry out the installation of a Francis turbine, which can generate an annual energy of approximately 280 MWh per year at the selected point, with an approximate investment cost of €20,000 per year, which means a recovery period of this investment of 2 years.
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Ho, Tin-Lun, and Qi Zhou. "Squeezing out the entropy of fermions in optical lattices." Proceedings of the National Academy of Sciences 106, no. 17 (April 13, 2009): 6916–20. http://dx.doi.org/10.1073/pnas.0809862105.
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At present, there is considerable interest in using atomic fermions in optical lattices to emulate the mathematical models that have been used to study strongly correlated electronic systems. Some of these models, such as the 2-dimensional fermion Hubbard model, are notoriously difficult to solve, and their key properties remain controversial despite decades of studies. It is hoped that the emulation experiments will shed light on some of these long-standing problems. A successful emulation, however, requires reaching temperatures as low as 10−12 K and beyond, with entropy per particle far lower than what can be achieved today. Achieving such low-entropy states is an essential step and a grand challenge of the whole emulation enterprise. In this article, we point out a method to literally squeeze the entropy out from a Fermi gas into a surrounding Bose–Einstein condensed gas, which acts as a heat reservoir. This method allows one to reduce the entropy per particle of a lattice Fermi gas to a few percent of the lowest value obtainable today.
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Zakonnova, Ludmila, Igor Nikishkin, Ludmila Stemplewska, and Alena Chupryakova. "Principles of Conservation of Biodiversity in Hydrobiocenoses Formed as a Result of Carbon and Energy Enterprises." E3S Web of Conferences 174 (2020): 02027. http://dx.doi.org/10.1051/e3sconf/202017402027.
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This paper presents the principles developed by the authors for the operation of reservoirs of technogenic origin, formed as a result of the activities of coal mining and energy enterprises, which can become basic when developing models for the rational use of wastewater and land from coal mining regions: maximum environmental friendliness, reasonable technological (biotechnological) restrictions, forecasting and regulation ecological consequences of the introduction of alien objects of ichthyofauna, etc. The expediency of soft biological methods for cleaning eutrophic water bodies is substantiated. As part of the implementation of the principle of forecasting and regulating the environmental consequences of the introduction of alien fauna ichthyofauna, a new approach is proposed to create a model of variability of the hydroecosystem that will allow developing mechanisms to maintain ecological balance in water bodies and coordinate the work of hatcheries and fishing enterprises, environmental monitoring services and other institutions. The principles of a reasonable biotechnological restriction in the operation of a reservoir and the possibility of alternative use of a reservoir have found their application in the development of warm-water aquaculture using waste warm water. It is proved that the principles of operation of reservoirs of technogenic origin, formed as a result of the activities of coal mining and energy enterprises, may well be successfully implemented to preserve biological diversity in large technogenic reservoirs.
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Bailey, R. J. "The West Firsby Oilfield, Development Licence 003, Lincolnshire." Geological Society, London, Memoirs 20, no. 1 (2003): 921–26. http://dx.doi.org/10.1144/gsl.mem.2003.020.01.78.
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AbstractThe West Firsby Oilfield exemplifies the classic east Midlands oil play, sourced by early Namurian pro-deltaic shales. Stacked fluvio-deltaic sandstone reservoirs of latest Namurian to early Westphalian 'A' age are structured into a Variscan inversion anticline in the hanging wall of the northeastern boundary fault of the Dinantian-Namurian Gainsborough Trough. The Enterprise West Firsby-1 discovery well, drilled on a 'Top Westphalian 'A'' seismic depth closure, encountered oil-bearing sandstones at three levels. These are thought to represent the earliest Westphalian 'A' Sub-Alton/Crawshaw distributary channel and mouthbar sandstones (Reservoir Zone [RZ] 1), the stacked fluvial channel sands of the Namurian Rough Rock (RZ2) and an underlying high quality mouth-bar sandstone (RZ3). In the hanging wall setting, these units can be correlated over an area far larger than the West Firsby Field.On acquiring operatorship of the Development Licence (DL 003) in 1991, Tullow Exploration put the WF-1 well into production from RZ2 and 3 disposing of produced water in the earlier-drilled and unsuccessful WF-2 step-out. Between 1992 and 1996, three new production wells (WF-4, -5 and -6) were drilled from the same surface site. The wells principally produce from RZ2 and involve high-angle/horizontal sections in these sandstones, approaching 170 m in length in WF-6. Strong aquifer support, coupled with the injection of produced water into RZ2 of WF-2, promotes early natural flow from such wells at rates up to 800BOPD, and when this declines jet-pumping can maintain production at rates of several hundred BOPD/well. As of 1st January 1999, the West Firsby Oilfield had produced 0.97 MMBBL of an estimated 13 MMBBL OIIP, maintaining an average annual rate during 1998 of 345 BOPD from four wells. Remaining recoverable reserves are estimated at around 1.03 MMBBL.
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Kruglyak, V. V. "Adaptive landscape systems for natural frame in Voronezh." FORESTRY BULLETIN 25, no. 2 (April 2021): 64–72. http://dx.doi.org/10.18698/2542-1468-2021-2-64-72.
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The substantiation of an adaptive planting system for the natural frame of Voronezh is presented. A forest-park green belt has been identified, the components of which make up a single natural ecological system. It is indicated that the oak forests of the urban district of Voronezh occupy an area of 4500 hectares. Using the indicators of the normal head water level, average width, average depth, length of the coastline, regulation coefficient, the morphometric characteristics and standard head water levels of the Voronezh reservoir were determined. On the basis of functional zoning in the Voronezh reservoir, three zones are identified and their characteristics are given. It was identified that the forest cover of the Central Chernozem region is 9 %, which is lower than the normative indicators of forest cover for creating the natural frame in Voronezh. It is shown that the scientific objects of the Educational and Experimental Forestry Enterprise of the Voronezh State Forestry University (VGLTU) for the creation of forest cultures of the main forest-forming species in the Central Chernozem Region confirm the concept of creating adaptive landscaping systems for the natural frame of the city of Voronezh. 140 species in the genus of birch have been identified, which can be used for adaptive landscaping systems in the area under consideration. The stated description of the Great Voronezh Ecological Trail (BVET) along the entire route, characterized by the presence of unique natural landscape, botanical, geological, garden and park objects. An upward trend in the indicator of recreation of adaptive landscaping systems from 31,904.3 hectares was recorded up to 32421.2 hectares in 2020. It is noted that the climatic and natural conditions of this territory are favorable for growing an expanded range of tree species and shrubs, primarily the main forest-forming species.
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Erena, Manuel, Joaquín Atenza, Sandra García-Galiano, José Domínguez, and José Bernabé. "Use of Drones for the Topo-Bathymetric Monitoring of the Reservoirs of the Segura River Basin." Water 11, no. 3 (March 2, 2019): 445. http://dx.doi.org/10.3390/w11030445.
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The Segura River Basin (SRB), located in the South East of Spain, has the lowest percentage of renewable water resources of all the Spanish basins. Therefore, knowledge of the annual rate of water reservoir sedimentation is an important issue to be resolved in one of the most water-stressed regions in the western Mediterranean basin. This paper describes the sensors developed in collaboration with technology-based enterprises (aerial drone, floating drone, and underwater drone), and the methodology for integration of the different types of data acquired to monitor the reservoirs of the SRB. The proposed solution was applied to 21 reservoirs of the SRB. The proposed methodology is based on the use of unmanned aerial vehicles (UAV) for photogrammetry of the reservoir surface area. For each reservoir, two flights were completed, with 20 cm and 5 cm resolution, respectively. Then, a triangular irregular network mesh was generated by GIS techniques. Surface water vehicles (USV) and underwater remote-operated vehicles (ROV) were used to undertake bathymetric surveys. In addition, water quality measurements were made with an ROV device. The main results consist of topographic and bathymetric measurements for each reservoir, obtained by using equipment based on OpenSource technology. According to the results, the annual rate of storage capacity loss of water resources in the SRB´s reservoirs is 0.33%.
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Rachmat Putra, Arfian. "Understanding the Role of Multinational Enterprise Representatives in Indonesia Towards Geothermal Investment Opportunity in Emerging Economies." Journal of International Studies on Energy Affairs 1, no. 1 (July 10, 2021): 75–91. http://dx.doi.org/10.51413/jisea.vol1.iss1.2020.75-91.
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Indonesia is a nation that is surrounded by aquatic resources and other major natural resources which can be utilize and converted to power through an investment program that allows investors to set up a clean energy project from hydro (river or reservoirs), wind, biomass, wave (ocean) and geothermal. The most significant issue which will be elaborated throughout this paper shall concentrate on the implication of internalization towards multinational enterprises by using existing geothermal energy development projects in Indonesia as study case. Indonesia’s natural resources has attracted foreign enterprises to invest in a state with emerging economies understanding that is still under development. Presently, Indonesia is still developing its regulation and availability to supply power demands from multiple areas that are rural, lack of electricity and lack of transmission lines. By comprehending the role of multinational enterprise which was triggered by the theory of internalization and investment.,
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Trella, Marek, Tomasz Czerwiński, and Arkadiusz Wołos. "Determinants of dam reservoir fisheries impacted by climate change as observed by managers from the entities authorized to exploit these fisheries in East-Central Europe." Fisheries & Aquatic Life 27, no. 4 (December 1, 2019): 208–23. http://dx.doi.org/10.2478/aopf-2019-0024.
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Abstract The aim of this paper is to present and discuss the results of a survey of fishers exploiting dam reservoirs to determine the conditions of conducting fisheries associated primarily with climate change. Overall, questionnaires were obtained from 18 enterprises (of which 16 were chapters of the Polish Anglers Association) regarding a total of 30 reservoirs with a combined surface area of 29,666 ha, which is 49% of the total surface are of this type of basin in Poland, the largest country in East-Central Europe. This sample is highly representative of all the fisheries conducted in this basin category in Poland and in other East-Central European regions. The following questions referring to the impact of climate change were defined and analyzed based on the answers obtained from the questionnaires: survival of hatchlings, fry, and adult fish; the spawning success of selected fish species; selected hydrological and biological reservoir parameters, the possibility of using and the effectiveness of fishing gears; the length of the recreational fishing season; the size of recreational and commercial fisheries catches of different fish species. Information regarding the impact of reservoirs on fish migrations was also obtained.
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Smirnova, V. S., S. A. Hudorozhkova, and O. I. Ruchkinova. "SUBSTANTIATION OF OPTIMAL CONDITIONS FOR THE REAGENT PURIFICATION OF WASH WATER FROM HEAVY NON-FERROUS METAL IONS." Construction and Geotechnics 10, no. 2 (December 15, 2019): 106–18. http://dx.doi.org/10.15593/2224-9826/2019.2.09.
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The article is devoted to the analysis of reagent methods, selection of reagents and optimal doses for the process of carrying out the purification of industrial wastewater from heavy non-ferrous metal ions, such as copper ammonium, copper sulfate, nickel, hexavalent chromium. Presents data on the cost of each reagent used, as well as a table with the original data. The course of the experimental work, the pH value, the initial metal concentration and the dose of the reagents used are described. The graphic results of experimental work on the purification of wash water containing various non-ferrous metals are given, which show the final concentrations of metals and the cost of cleaning 1 cub m of runoff. As a result of the analysis, conclusions were made about the effectiveness of the various reagents used on heavy non-ferrous metal ions. The criterion for the efficiency of cleaning the wash water was the possibility of achieving the maximum permissible concentration for discharge into the fishery reservoir, the permissible concentration for discharge into the centralized water disposal system of the city and standards for permissible discharge for the enterprise. The optimal conditions for reagent purification of wash water are found, taking into account the possibility of achieving each considered criterion of purification efficiency, with the minimum cost of reagents. The use of reagent purification of wash water requires subsequent neutralization of treated wastewater. The choice of the technological scheme of purification of wash water from heavy non-ferrous metal ions will be determined, on the one hand, from the heavy non-ferrous metal ion contained in the wastewater, and on the other hand, from the need to achieve the required cleaning criterion.
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Fesiuk, Vasyl, Serhii Polianskyi, and Vladyslav Guda. "IMPROVEMENT OF THE HYDROECOLOGICAL CONDITION OF TEREMNIVSKY PONDS." SCIENTIFIC ISSUES OF TERNOPIL VOLODYMYR HNATIUK NATIONAL PEDAGOGICAL UNIVERSITY. SERIES: GEOGRAPHY 50, no. 1 (July 1, 2021): 134–41. http://dx.doi.org/10.25128/2519-4577.21.1.16.
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The article is devoted to the assessment of the current hydroecological condition of Teremnivsky ponds, the factors influencing it, the connection with the hydroecological condition of the Sapalaivka river. The history of research of hydroecological condition of Teremnivsky ponds, features of physical and geographical conditions of locality and anthropogenic influence on ecosystem of ponds are analyzed. The reservoirs are located in the Teremnivskyi district, where low-rise private buildings and a few of industrial enterprises predominate. Ponds and their shores are a place of rest and recreation of local population. It has swimming and sunbathing beaches, shopping and catering facilities. The shores of the ponds are currently insufficiently landscaped and have poor sanitation. The reservoir is a typical floodplain pond in the valley of the river Sapalaivka. Built in the 60's. XX century Recently, the ecological and sanitary condition of ponds has deteriorated, which makes it difficult to use them for recreational purposes. This is largely due to the poor ecological condition of the Sapalaivka river. Teremnivsky ponds in the summer are characterized by eutrophication - the enrichment of reservoirs with nutrients, which is accompanied by increased productivity of the reservoir. Much of the surface of the reservoir is covered with a film of duckweed and other algae. Poor sanitation of the reservoir banks also contributes to eutrophication. Shores are not removed from fallen leaves, household waste. It all gets into the stakes and pollutes them. It is determined that the hydroecological condition of Teremnivsky ponds is most affected by: chemical composition of water, microbiological water pollution, eutrophication of the reservoir in summer, sanitary condition of the reservoir banks, ecological condition of the Sapalaivka river, where the reservoir was created. It is established that the content of certain chemical pollutants in the water of Teremnivsky ponds exceeds their maximum permissible concentration in reservoirs for fishery use. Such water pollution is caused by the ingress of surface runoff from the city, sewage from latrine pits and garbage from the population. Thus, the hydroecological and sanitary condition of Teremnivsky ponds today is unsatisfactory and requires optimization. Previously implemented measures of local environmental programs are analyzed. In 2012-17, on the initiative of the Department of Ecology of the Lutsk City Council, measures were taken to improve the hydroecological condition of the Sapalaivka River. At present, a significant amount of urgent work has been done, and the project is still far from complete. In 2013-2014, landscaping with elements of revitalization of the valley of the Sapalaivka River was carried out. A set of measures for the completion and successful implementation of the project to improve the hydro-ecological condition of Teremnivsky ponds is proposed. It includes: cleaning and tidying up the water area and the surrounding area; technical measures (treatment of surface runoff from the city and prevention of contaminated wastewater; bioremediation measures (treatment of ponds from pollutants already in the water, improving the sanitary condition of water and combating eutrophication of the reservoir).
Key words: ponds, hydroecological condition of ponds, factors determining the hydroecological condition of ponds, measures to improve the hydroecological condition of ponds.
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NAUMENKO, N. O., and E. V. FEDOTOVA. "DEVELOPMENT OF PROGRAMS FOR SOLVING TASKS IN THE FIELD OF ENVIRONMENTAL PROTECTION ON WATER CATCHMENT AREAS." Prirodoobustrojstvo, no. 5 (2020): 27–32. http://dx.doi.org/10.26897/1997-6011-2020-5-27-32.
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The purpose of this work is to develop software for calculating maximum permissible discharges and methods for assessing the overgrowth of water bodies with higher aquatic plants using the publicly available Google Earth program. In this paper, research has been carried out to improve the environmental monitoring system in catchment areas. A new approach is proposed for calculating the maximum allowable discharge for the current volume of water in the reservoir at a specific time. To implement the approach, software has been developed in which calculations are made to determine the value based on the actual volume of water in the Rybinsk reservoir based on the date of the expected discharge of pollutants from enterprises and the current content of pollutants in the water. A method has been developed for assessing the overgrowth of water bodies by higher aquatic plants using the publicly available Google Earth program, which will make it possible to make a forecast of siltation of reservoirs based on the degree of overgrowth. On the basis of the program Google Earth the dynamics of overgrowing of the lake Bezdonnoe is determined on the basis of space images for the 2013, 2015 and 2019 year relative to the 2009 year.
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Vasyanovich, M. E., A. A. Ekidin, A. V. Trapeznikov, and A. P. Plataev. "Baromembrane method for analysis of ultra-low concentrations of radionuclides in water samples." Marine Biological Journal 5, no. 3 (September 30, 2020): 11–22. http://dx.doi.org/10.21072/mbj.2020.05.3.02.
Full textAbstract:
This paper demonstrates the use of the baromembrane method for measuring ultra-low concentrations of radionuclides in water of freshwater reservoirs. The relevance is due to the need to determine radionuclides introduction into water cooling ponds used by enterprises of nuclear fuel cycle. Radionuclides of natural and technogenic origin, not associated with enterprise discharge, are always present in water cooling ponds, forming a natural or technogenic altered background. Its presence often makes it difficult to identify contribution of enterprise’s discharge to water activity, since routine monitoring methods are characterized by a very high detection limit for radionuclides. Traditional methods for determining background radionuclides concentrations require sampling of at least 500 L of water, followed by their evaporation to get a dry residue. This procedure takes at least 5 days. It is possible to reduce time and energy spent on vaporizing hundreds of liters of water by pre-concentrating radionuclides in a smaller sample volume with the baromembrane method. To demonstrate this method, a portable installation with osmotic membranes was used being characterized with initial productivity of 6.0 L·min−1. The osmotic membranes separate source water sample into two components: demineralized permeate and concentrate, containing radioactive substances. This method allows preliminary concentration of water samples from 500 to 20 L in 10–15 hours with minimal losses of radionuclides (time period depends on water mineralization level). The method is universal; it can be used for concentration of dissolved salts of any heavy metals and other organic compounds. It allows preparation of water countable samples in much shorter time that traditional method (evaporation).
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Makridin, Eugene, Sergey Markov, Elena Murko, and Ivana Ondrejmiskova. "Open pit mine wastewater filtration in the overburden rock debris: case study." E3S Web of Conferences 303 (2021): 01033. http://dx.doi.org/10.1051/e3sconf/202130301033.
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Discharge of untreated quarry water into natural water reservoirs is unacceptable for environmental reasons. This circumstance is especially relevant for coal mining regions with a high density of mining enterprises. Treatment of quarry waste water at mining enterprises is a necessary process, provided for in the design documentation. It is due to the significant pollution of quarry water by suspended solids, dissolved salts and organic substances. In addition to expensive sorbents (e.g. zeolite), overburden rocks, confined to the mined area of coal deposit, are used for construction of filtering dams. They are used to construct treatment facilities designed for the entire lifetime of the mining enterprise. Thus, their permeability and purification capacity should be maintained for decades. The movement of filtered water in such massifs is subject to the known laws of filtration. Filtering dams should provide both a free movement of water and the required level of its purification. This is achieved by selecting the appropriate geometry of filter dams (their sizes, base slopes) and the choice of overburden capable of providing the required level of purification in a long and qualitative term. The article presents the results of studies of the geometry of the filtering massif and the methodology of selection of overburden used for the construction of filtering dams.
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ABACHE, Gifty, and Mark OWUSU-FRIMPONG. "The Role of Gender in Artisanal Fisheries of the Tono Reservoir." Ghana Journal of Science, Technology and Development 6, no. 1 (May 7, 2019): 15–20. http://dx.doi.org/10.47881/124.967x.
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The 1,860 ha Tono reservoir is the largest source of water for irrigation and freshwater fisheries production in the Upper East Region of Ghana. The current status of the fisheries was investigated in this study, with emphasis on the role of gender. The reservoir’s fisheries have made a significant contribution to food security and livelihoods. The artisanal fisheries produce an estimated 61.2 metric tons of fish annually and offer employment and income for not less than 480 indigenous households. Participation in the fisheries value chain during the study was gender biased: the ratio of males to females was 104 to 376. The men do the fishing (actual extraction) and mending of the fishing gears, while the women traditionally dominate the downstream post-harvest enterprises. More importantly the women command a considerable influence on the fisheries exploitation as financiers or employers of majority of the fishers.
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Nikishkin, I., and L. Zakonnova. "Improvement of Ctenopharyngodon idella reproduction technology under the conditions of water fish fishery." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 7 (July 1, 2020): 58–65. http://dx.doi.org/10.33920/sel-09-2007-06.
Full textAbstract:
The most rational way to reduce the eutrophic load on reservoirs-coolers of energy enterprises, in which the technological processes of energy production and growing fish products are not disrupted, is the introduction of fish-reclaimers into the reservoir. In this regard, full-system fisheries of this type include the production of fish-planting material of herbivorous species, in particular grass carp Ctenopharyngodon idella in their work plan. In the production conditions of Belovsky Fisheries LLC, a technology for growing planting material and commercial products of the white Amur has been developed, which has fully justified itself. At the same time, certain difficulties are associated with obtaining high-quality sexual products of herbivorous fish. Due to the technological features and hydrochemical regime of the reservoir, the production of plant-eating fish planting material is carried out with a high risk of over-aging of sexual products. Analysis of the results of spawning campaigns revealed a number of problems, including: zero percent of fertilization, early maturation and release of part of the eggs by females after a permissive injection, and gonad thrombosis. To solve the problem of low fertilization rate, special attention should be paid to sufficient oxygen concentration in water during pre-spawning operations with producers of Cupid. The problem of over-aging of sexual products and gonad thrombosis is proposed to be solved by using a flexible scheme of hormonal stimulation of producers.
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Ребенко, Галина, Олександр Нечипоренко, Валерій Пономаренко, Юрій Мусієнко, Анатолій Фотін, Юлія Сторчак, and Олександрa Баканова. "Decreasing of the risk of zoonoses by solving the problem with stray dogs." Bulletin of Sumy National Agrarian University. The series: Veterinary Medicine, no. 1-2(44-45) (July 1, 2019): 42–49. http://dx.doi.org/10.32845/bsnau.vet.2019.1-2.6.
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People can become infected with zoonoses from domestic or stray dogs (the most dangerous ones are rabies, brucellosis, dermatomycosis, leptospirosis, parasitic diseases). 1,466 rabies outbreaks and 2 cases of human rabies were reported in Ukraine in 2018. In total, 17 people died of rabies in Ukraine in 2014-2018. Sources of rabies were nonvaccinated against rabies dogs.
In most dermatomycosis patients, the zoonotic form of microsporia caused by Microsporum canis is recorded, and infected cats and dogs play an important role in the spread.
Dogs are a dangerous reservoir of leptospira and a source of infection for humans. Develops a mild course of leptospirosis, reminiscent of influenza, but has severe consequences and leads to meningitis.
Dogs can infect humans with the agents of campylobacteriosis and brucellosis, as well as many other parasitic diseases: Ancylostoma braziliense і Ancylostoma caninum, Toxocara canis і Toxocara cati , Cryptosporidium , Echinococcus granulosus, Dirofilaria immitis , Giardia lamblia and ectoparasites: Sarcoptes scabiei (variant canis) and Cheyletiella yasguri.
Prevention of zoonotic diseases requires a holistic approach within the framework of the One Health concept. Health,
environmental and veterinary services, with the active involvement of local government, conservation and animal welfare organizations, must be involved.
The problem of handling animals and regulating the numbers of stray animals in Sumy is an urgent one. The solution to this problem is to reduce the number of stray animals with only humane methods, to improve the epizootic and sanitary-ecological situation in the city, to create conditions for the prevention of the phenomenon of stray animals, and to change public opinion towards a civilized, humane, ethical attitude to animals.
Principles of animal shelter organization, scheme of veterinary and sanitary measures and treatment and preventive treatment of animals have been developed and put into practice by us.
Within the framework of the agreement with the communal enterprise of the Sumy City Council "Animal Care Center" Sumy National Agrarian University performs the veterinary part of the service of stray animals, which ensures the implementation of the "Program of regulation of the number of stray animals in the city of Sumy by humane methods".
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Polyakova, Ekaterina M. "Assessment of the risk of health disorders when working in an open area during the cold period of the year." Russian Journal of Occupational Health and Industrial Ecology 60, no. 11 (December 3, 2020): 857–59. http://dx.doi.org/10.31089/1026-9428-2020-60-11-857-859.
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Introduction. Oil industry workers are exposed to some work environment factors of specific natural and climatic conditions. The aim of study is to conduct an assessment of the group occupational risk of health disorders in the conditions of working in open territories in cold seasons. Materials and methods. The object of the study was workers who carry out labor operations in an open area during cold seasons: operators of a desalting and dehydrating unit, mechanists of compressor units, mechanists for pumping a working agent into the reservoir and repairmen of the oil producing company located in Western Siberia. The assessment of a priori group risk from the impact of industrial noise, exposure to chemicals in the air of the work environment, while body vibration, factors of the work environment and the climate of cold seasons in the conditions of working in open areas and in unheated rooms was carried out according to the combined model of professional risk assessment developed by A.V. Meltser, A.V. Kiselev. Results. We ranked the workplaces of the studied professional groups according to the degree of health hazard. It has been established that the greatest danger, from the point of view of the methodology of professional risk, is the workplace of an operator of the central tank desalting and dehydrating unit of the oil preparation and delivery unit. The leading factor for the development of occupational and nonspecific pathology within a studied enterprise is industrial noise. At the same time, the climate in cold seasons in the conditions of working in open areas makes a significant contribution to the development of occupational and nonspecific pathology. Conclusions. Assessment of the a priori occupational risk of health disorders among oil company workers engaged in labor operations in an open area during a cold season made it possible to establish priority work place in which it is advisable to carry out priority medical and preventive measures. The implemented system of hygienic assessment of occupational factors should take into account the effect of the climatic and weather conditions on workers’ health in the region of residence.
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Feder, Judy. "Will This Be the Decade of Full Digital Twins for Well Construction?" Journal of Petroleum Technology 73, no. 03 (March 1, 2021): 34–37. http://dx.doi.org/10.2118/0321-0034-jpt.
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The time needed to eliminate complications and accidents accounts for 20–25% of total well construction time, according to a 2020 SPE paper (SPE 200740). The same paper notes that digital twins have proven to be a key enabler in improving sustainability during well construction, shrinking the carbon footprint by reducing overall drilling time and encouraging and bringing confidence to contactless advisory and collaboration. The paper also points out the potential application of digital twins to activities such as geothermal drilling. Advanced data analytics and machine learning (ML) potentially can reduce engineering hours up to 70% during field development, according to Boston Consulting Group. Increased field automation, remote operations, sensor costs, digital twins, machine learning, and improved computational speed are responsible. It is no surprise, then, that digital twins are taking on a greater sense of urgency for operators, service companies, and drilling contractors working to improve asset and enterprise safety, productivity, and performance management. For 2021, digital twins appear among the oil and gas industry’s top 10 digital spending priorities. DNV GL said in its Technology Outlook 2030 that this could be the decade when cloud computing and advanced simulation see virtual system testing, virtual/augmented reality, and machine learning progressively merge into full digital twins that combine data analytics, real-time, and near-real-time data for installations, subsurface geology, and reservoirs to bring about significant advancements in upstream asset performance, safety, and profitability. The biggest challenges to these advancements, according to the firm, will be establishing confidence in the data and computational models that a digital twin uses and user organizations’ readiness to work with and evolve alongside the digital twin. JPT looked at publications from inside and outside the upstream industry and at several recent SPE papers to get a snapshot of where the industry stands regarding uptake of digital twins in well construction and how the technology is affecting operations and outcomes. Why Digital Twins Gartner Information defines a digital twin as a digital representation of a real-world entity or system. “The implementation of a digital twin,” Gartner writes, “is an encapsulated software object or model that mirrors a unique physical object, process, organization, person or other abstraction.” Data from multiple digital twins can be aggregated for a composite view across several real-world entities and their related processes. In upstream oil and gas, digital twins focus on the well—and, ultimately, the field—and its lifecycle. Unlike a digital simulation, which produces scenarios based on what could happen in the physical world but whose scenarios may not be actionable, a digital twin represents actual events from the physical world, making it possible to visualize and understand real-life scenarios to make better decisions. Digital well construction twins can pertain to single assets or processes and to the reservoir/subsurface or the surface. Ultimately, when process and asset sub-twins are connected, the result is an integrated digital twin of the entire asset or well. Massive sensor technology and the ability to store and handle huge amounts of data from the asset will enable the full digital twin to age throughout the life-cycle of the asset, along with the asset itself (Fig. 1).
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Alekhnovich, Aleksandr V., A. N. Grebenyuk, A. A. Kruglov, S. V. Chistyakov, and S. P. Chushnyakov. "SANITARY-HYGIENIC CHARACTERISTICS OF THE AREA OF POSITIONING FOR THE DISPOSAL OF ROCKET TECHNICS." Hygiene and sanitation 96, no. 7 (March 27, 2019): 607–10. http://dx.doi.org/10.18821/0016-9900-2017-96-7-607-610.
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There was executed the sanitary-hygienic assessment of residential areas in the zone of possible impact of industrial activity of the Center for the elimination of Intercontinental ballistic missiles affiliated to the Federal State Unitary Enterprise “Center for Operation of Ground-Based Space Infrastructure Facilities” located in the Nizhny Novgorod region. There were performed full-scale studies of air samples, water reservoirs and sources of drinking water, the soil on the content of components of liquid rocket fuels and their degradation products. Studies have shown full-time work enterprises not to be accompanied by the emission of unsymmetrical dimethyl hydrazine, Tetramethyl-2-tetrazene, NDMA into the environment. In samples of water from open stagnant water bodies there was detected both dimethylamine in concentrations exceeding MPC by 1.1 - 1.3 times, and formaldehyde in the concentration below the MAC. All soil samples also contain FA and DMA in concentrations significantly lower than the MPC. As, Be, Cd, Pb in drinking water was not detected within the sensitivity of the method, Ni content, Zn, Mg, Mn, Al does not exceed hygienic standards. Fe content in the water of centralized water supply amounted to 1.5 MAC.
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Jose, T. K. "Micro enterprise initiative in water sector and poverty reduction." Water Science and Technology 47, no. 6 (March 1, 2003): 119–28. http://dx.doi.org/10.2166/wst.2003.0373.
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The author reports on the Kerala model for water sector development, broadly adopted as a role model for poverty reduction and build up of social capital. It is a community based organisation with its focus on facilitating a stable income to the poor, and composed of a People's Plan Campaign, the Kudumbashree (women-based poverty eradication programme), with grassroot level neighbourhood groups, federated into an area development society. It promotes savings and credit channelling, capacity building and entrepreneurship development. Activities include awareness raising on water conservation and hygiene, utilization of student power, promotion of small, cheap and low technology projects that people can understand and undertake (small reservoirs, tanks, rainwater harvesting structures, water meters), as well as microenterprises, and training of women-based repair groups.
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Dvoinikova, A. V., and A. A. Gicaev. "EXTRACTING OIL FROM THE SLUDGE MICROMETALLIC MINIMIZING THE IMPACT OF HEAVY METALSON THE ENVIRONMENTAL OBJECTS." Oil and Gas Studies, no. 5 (November 1, 2017): 122–24. http://dx.doi.org/10.31660/0445-0108-2017-5-122-124.
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Processing and utilization of oil reservoir type is an important environmental and economic problem [2]. Currently in the oil pits in various oil refining enterprises have accumulated hundreds of millions of tons of toxic sludge. This situation poses a real threat to the biological system of the Earth, as crude oil is polymer recycling, which after processing leaves degradation products unknown to science.
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Yu, Jo-Hung, Hsiao-Hsien Lin, Yu-Chih Lo, Kuan-Chieh Tseng, and Chin-Hsien Hsu. "Research on Sustainable Development Evaluation of Reservoir Water Source Area in Island Area." Water 13, no. 8 (April 20, 2021): 1130. http://dx.doi.org/10.3390/w13081130.
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This study takes Taiwan’s Sun Moon Lake Reservoir as the research object to discuss the sustainable development decision-making of the reservoir water source area in the island area. The grounded theory was adopted to construct the framework; 835 questionnaires were analyzed by statistical test; 10 interviewees’ feelings were collected through interviews and discussions, and multiple verification methods were used for exploration. Conclusion: The study found that the current development of the reservoir water source area of the outlying islands has brought much garbage; affecting the quality of the natural environment; lake; and water source; caused the disappearance of distinctive culture and architecture. The poor interaction between businesses and communities has led to an overlap in the types of industries, consumer goods, attractions and a lack of transportation and medical facilities, affecting people’s desire to travel. The government’s future decisions include: Increasing the variety of consumer goods; improving medical and transportation facilities; preserving unique culture and architecture; linking foreign-invested enterprises with community interactivity; enhancing local people’s interaction; and compensating for the deficiencies in human resources for industrial development are the key points for future improvement of the reservoir water source area of the outlying islands.
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Kulikova, E. Yu, and Ju A. Sergeeva. "Conceptual model for minimizing the risk of water pollution in the Kemerovo region." Mining informational and analytical bulletin, no. 6-1 (May 20, 2020): 107–18. http://dx.doi.org/10.25018/0236-1493-2020-61-0-107-118.
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One of the problems of functioning of coal industry enterprises is the formation of mine waters, which are discharged into water bodies and cause their dangerous pollution. The total volume of water pumped by the enterprise includes up to 15 % for the recycling cycle, the remaining 85% is discharged to surface water bodies. As a result, the ecological balance of coal regions is disturbed, their sanitary and hygienic state on the environment worsens, and the quality of coal is reduced due to the intake of polluted water for technological operations. The volume of mine water contamination increases during mining operations at deeper horizons and in difficult mining and hydrogeological conditions. In turn, this leads to pollution and depletion of underground aquifers and the formation of environmental risk factors. In Kuzbass, all these factors contribute to the development of water crisis, since the state of surface reservoirs has already reached a critical limit. Especially dangerous is the process of liquidation of mines. Closing mines and sections disrupt natural water flows, resulting in all water from the aquifers going to deeper horizons. More pollutants enter the water, which poison the underground hydrosphere of the regions. The paper analyzes the pollutants entering the underground and surface hydro grid at coal-fired plants and offers a Conceptual model for minimizing the risk of water pollution.
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Lobachevska, O. V., N. Y. Kyyak, and I. V. Rabyk. "Ecological and physiological peculiarities of bryophytes on a post-technogenic salinized territory." Biosystems Diversity 27, no. 4 (October 24, 2019): 342–48. http://dx.doi.org/10.15421/011945.
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Taxonomic, biomorphological and ecological structures of bryophytes, their reproductive strategy and the main mechanisms of tolerance in the conditions of salinization were investigated. Bryophytes are the pioneers that have colonized the territory of a tailing storage that holds liquid waste from potassium-magnesium concentrate production of the Mining and Chemical Enterprise "Polymineral". Due to excess salts, the soil solution in the shore area of the tailing pond acquires high osmotic pressure. Three experimental plots which differed significantly in the level of the substrate salinity were laid at the distance of 3, 6 and 9 m from the reservoir for experimental studies. Water extracts of the substrates from the test sites showed the highest concentrations for sulfates – 10.4–64.6 mg Eq/100 g of soil and chlorides – 7.6–43.3 mg Eq/100 g of soil. It was established that the investigated areas of the tailing storage territory differed in the biochemical activity of the substrate, which was evaluated by its redox potential. On the areas of the uncovered substrate it was the lowest – 230 mV, which indicates anaerobiosis in conditions of very high salinization and moisture. Higher ROP values were determined at the sites of bryophyte cover distribution – 295–330 mV. The aim of the study was to determine the features of taxonomic, biomorphological and ecological structures of bryophytes, their reproductive strategy and to establish the main mechanisms of adaptation to the conditions of salinization on the tailing storage territory. 24 species and 3 varieties of bryophytes, belonging to 12 families and 16 genera were found on the shore of the tailing storage pond. The results of biomorphological and ecological analysis of bryophytes indicate the uneven conditions of the habitats and their considerable ecological plasticity. Among the bryophytes, mesophytes, xeromesophytes and meso-eutrophs, eutrophs with a life-form of low dense and loose turf dominated. In salinization conditions, dioicous acrocarpous mosses prevailed, the fertile turf of which, depending on the influence of abiotic factors, differed significantly in the number of sexual shoots, their ratio and productivity. Bulbils were found only on the tips of Bryum argenteum shoots. Along with Salicornia europaea L., a euhalophyte, the leading role in the initial stage of overgrowth of the tailing storage area most often belonged to Didymodon rigidulus, Bryum argenteum, Funaria hygrometrica and Barbula unguiculata. The process of formation of bryophyte cover occurred along a gradient of decrease in salt concentration at the experimental sites. Adaptation of bryophytes to substrate salinity is due to a change in metabolic processes, which is manifested in an increase of the total content of carbohydrates and an increase of the cation exchange capacity of moss cell walls, which is the primary barrier that reduces the toxic effect of ions under salt stress.
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Shen, Chih-Chien, Chou-Fu Liang, Chin-Hsien Hsu, Jung-Hul Chien, and Hsiao-Hsien Lin. "Research on the Impact of Tourism Development on the Sustainable Development of Reservoir Headwater Area Using China’s Tingxi Reservoir as an Example." Water 12, no. 12 (November 25, 2020): 3311. http://dx.doi.org/10.3390/w12123311.
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The purpose of this study was to understand the impact of tourism development on the sustainable development of Tingxi Reservoir. Based on tourism impact theory, 804 questionnaires were statistically validated and analyzed, followed by a semi-structured interview with five respondents, and finally examined by a multivariate verification method. The study found that not only did development fail to raise land and housing prices, develop leisure activities, improve medical facilities, and supplement police manpower, but it also increased consumer costs and environmental damage. There were also problems such as insufficient interpreters, parking and rest facilities, and ineffective management of communication channels, bicycle facilities, and tourist waste, which did not help youths to return to their hometowns. Furthermore, due to the disparities in the performance of leisure opportunities, medical and health care, spatial planning, and cultural development, there were different opinions among the stakeholders. Suggestions: (1) Satisfy the needs of different stakeholders; (2) Improve the environmental literacy of tourists and provide more garbage cans; (3) Develop additional scenic spots to divert tourists; (4) Stabilize prices and attract investment from enterprises; and (5) Increase the participation of residents in community development to supplement industrial manpower.
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Han, Dan, and Debin Zhang. "Construction and application of reservoir development measure benefit evaluation system." E3S Web of Conferences 236 (2021): 01023. http://dx.doi.org/10.1051/e3sconf/202123601023.
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The reservoir passes the peak of reserves.The reserves of new investment and development are decreasing year by year. The reserve resources are insufficient. Some of the main development units have entered the stage of secondary or tertiary oil recovery. The dependence of stable oil and gas production on measure production increases continuously. Under this background, the workload of oil well measures increases year by year. It is difficult to control the operation cost of measures. As a result, the overall economic benefits of oilfield enterprises have been declining year by year.The cost of ineffective measures has become an important factor restricting the economic development of oilfields. Through the construction of measures benefit evaluation system.Strengthen the controllability and predictability of each stage of implementation. Special attention should be paid to the pre control management of high cost wells and the transformation of production mode of low efficiency wells. Strictly follow the "ex ante argument, adjustment in matters, and post evaluation optimization" measures to run the management mode. Realize the reasonable allocation of workload and cost, and improve the effective rate of return of funds.
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Tkachenko, Таtiana М., Yulia H. Pilkevich, and Heorhii M. Rozorinov. "Recognition of fish acoustic patterns at monitoring of freshwater ecosystems." Environmental safety and natural resources 37, no. 1 (April 2, 2021): 20–34. http://dx.doi.org/10.32347/2411-4049.2021.1.20-34.
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The basic sources of contamination and obstruction of reservoirs are cleared not enough sewer water of industrial and communal enterprises, large stock-raising complexes, wastes of production; upcast of water and railway transport; wastes of roughing-out of flax, pesticides and other. Сontaminents, getting in natural reservoirs, result in the quality changes of water, that, mainly, appear in the change of physical properties of water, in the change of chemical composition of water, in a presence floating substances on the surface of water and laying of them on the bottom of reservoirs. The increases of population, expansion of old and origin of new cities considerably increased entering of domestic flows internal reservoirs. Synthetic cleansers that is widely used in the way of life contaminate reservoirs in a yet greater degree. In the total the capacity of waters goes down for oxigenating, activity of bacteria that mineralize organic substances is paralysed. The unfavorable ecological state of many freshwater ecosystems inflicts substantial harm to the fish resources of reservoirs and puts under a threat possibility not only to develop fish industry, conducting fish artificially, but also simply to catch her. All of it stimulate to do events in relation to the improvement of the ecological state of fresh reservoirs. Voice vibrations are the important constituent of the ecological monitoring of the biota state of fresh reservoirs. Information is about formation of sound in a reservoir part of that is activity of fishes turns out by means of acoustic sensors, that farther yields to computer treatment. The modern methods of recognition of fish acoustic patterns are based on the standards of signals, with properties of average estimations, or on comparisons of acoustic signals with a standard. It is shown that for creation of standards, as a rule, executed: previous signal processing, extraction of features of acoustic signal. Acoustic signals that act from movable objects – fishes can change depending on objective external terms and physical state of reservoirs. The hard algorithms of recognition of acoustic patterns are characterized high probability of error. In this connection repressing are adaptive algorithms of recognition of acoustic patterns. In the process of forming of standards clarification of software comes true according to the features of acoustic signal. Realization of process of creation of standards allows to determine the measure of functional readiness of parameters and knowledge base for the decision of recognition tasks of acoustic signals. In the process of recognition the probability terms of the correct comparing are set to the standard, on default of that an algorithm stops to be executed and requires additional studies. It requires creation of standards that reflect the characteristic features of fish signals. Presently for authentication mostly choose such pattern of acoustic signals, as period length of signal fundamental wave. It can be determined or by the search of maximal value in an autocorrelation function, or by the search of minimum value in the function of mean value of difference of signal amplitudes, or by the search of difference of two maximal values in the sequence of going into detail wavelet-coefficients. It is shown that for the tasks of recognition of fish acoustic patterns, most exact and requiring the least studies there is presentation of acoustic signal as a set of sign vectors of frames. In detail methodologies of the period selection of fundamental wave of acoustic signal were analysed: SIFT, EFT-А and EFT-WT. Methodology of EFT-WT is characterized absence of the thresholds set in good time; by the rapid search of period of fundamental wave; by absence of dependence on a noise-level, as a certain range of frequencies is investigated. At the same time calculable complication of wavelet transform is relatively high, in this connection it is necessary optimization of calculation algorithms.
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Zhaparkulova, Yermekkul, Madina Nabiollina, and Balzhan Amanbayeva. "Methods of forecasting calculations of breakthrough wave at hydrodynamic accidents waterstorage dam." E3S Web of Conferences 97 (2019): 05033. http://dx.doi.org/10.1051/e3sconf/20199705033.
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The article gives the method of calculation of water storages dam at hydro technical accidents. From natural disasters floods (flooding of water in the area and settlements) by the frequency of occurrence of the phenomenon, the area of distribution and the annual material damage ranked first. Moreover, in recent years, the world has seen an increase in the number and extent of floods and the associated social and economic losses. Both at present and in the foreseeable future, floods as a natural disaster cannot be completely prevented everywhere and everywhere, they can only be weakened, localized and with timely warning to minimize material damage. Therefore, one of the largest floods in recent years, that occurred in the West Kazakhstan region in the spring of 2011 and which took place without casualties, resulted in the allocation of more than 19 billion tenge in damage recovery from damage. Unplanned and inconsistent with general measures during floods and floods, the descent of these reservoirs can exacerbate the effects of flooding. The technical condition of the channel dams is especially dangerous. In case of possible accidents on these dams, many settlements, thousands of enterprises, millions of hectares of agricultural land can get into the affected area. Based on the results of full-scale leveling surveys, forecasting calculations of the breakthrough of the water reservoir dams of Bartogay, Kapshagay and Kurty hydrounits have made. Attached graphics show a dependence of water consumption at the dam breakthrough on the distance from the dam gates.
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Hryhorenko, Liubov V. "Water Quality Assessment in the Mining and Industrial Region on the Example of Karachunovskyi Reservoir in Ukraine." Advanced Engineering Forum 33 (August 2019): 19–31. http://dx.doi.org/10.4028/www.scientific.net/aef.33.19.
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Quality of water from surface water source – Karachunovskyi reservoir for a long period of observation during (1965-1979), (1980-1990), (1991-2001), (2002-2012) years was studied. In water taken from Karachunovskyi reservoir was shown negative trend for increasing salt composition, by the content of general rigidity, dry residue, sulfates, chlorides for a long period of observation: from 1965 to 2012 years, which is caused by the systematic discharge of a highly mineralized mine water from the mining enterprises of Kryvyi Rih into Ingulets and Saksagan rivers, and subsequent pollution of Karachunovskyi reservoir – the main source of centralized drinking water supply 94% of the urban population. Generally, salt composition of the water from Karachunovskyi reservoir in some years of observation belonged to the 4th class of danger, i.e. "limited usable, undesirable quality". Characteristic feature of the Kryvorozhska urbanization zone is the presence of priority heavy metals (Mo, Mg, Cd, Ni, Zn, Fe, Cu, Pb, Cr) in water sources, due to the intensive extraction of iron ore. For example, average iron content in 2010 was (0.342±0.003) mg/dm3, which exceeded MPC (0.3 mg/dm3) on 1.14 times. The average content of manganese exceeded the hygienic standard in 2008 (1.42 MPC), in 2009 (1.3 MPC) and in 2010 (1.54 MPC) years, due to a high background content of this chemical element in the environmental facilities of the industrial city, and the annual discharge of highly mineralized mine water into local water sources.
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Dong, Ji-chang, Lin-lin Zhu, Bing Wang, Zhi Dong, and Xiu-ting Li. "The Evaluation of Financing Efficiency of China’s Stock Market." Mathematical Problems in Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/3236897.
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Financing is the main way for listed companies to obtain funds in China, and it is the “reservoir” which can guarantee enterprises to operate continuously. Financing efficiency can be used to measure the efficiency in using enterprises’ own funds, and it is one of the main indicators which are concerned by the stakeholders of listed companies. This paper mainly researches on the impact of equity financing on the financing efficiency of listed companies as a whole and selects 300 listed companies in the Shanghai and Shenzhen Stock Exchange as decision-making units. Then this paper analyzes the financial data of sample companies in 2008–2014. Finally, it can be concluded that the financing efficiency of listed companies in China is generally low, and the total factor productivity in the stock market continued to decline between 2003 and 2005 and then rose rapidly.
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Wang, Wen Yong, Wen Liu, and Xiao Juan Ma. "Analysis for Influence upon Local Climate Factors of Reservoir Area of Hydropower Station after Water Storage." Applied Mechanics and Materials 212-213 (October 2012): 245–52. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.245.
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An artificial reservoir will be formed at the dam upstream in a large hydropower station after the station put into use, and with water area expanding, the local climate will change. This paper takes mesoscale meteorological numerical model WRF to simulate a certain hydropower station in Sichuan to obtain the impacting situation of the local climate after the water storage. The result indicates as follows: firstly, the wind field has been greatest changed after the water storage. Except in the winter, we can found obvious lake-land breeze in the spring and the summer and the flow field is very evident; secondly, the temperature is rising or falling; except for a little change in the spring, the average temperature falls 1.27°C in the summer but rises at 1.28°C in the winter. In addition, the humidity around the reservoir is changed distinctly; the average humid degree rises mostly at 4.56% in the winter, moderately at 2.25% in the spring but a little change at 0.94% in the summer. It is since the climate factors have been changed that the concentration field of atmospheric pollutants which generated by the industrial and mining enterprises around the reservoir has been changed at all.
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Xie, Shi Ping, and Peng Jie Chu. "Study on the Sustainable Development of Vehicle Ro-Ro Transportation in the Three-Gorge Reservoir." Applied Mechanics and Materials 330 (June 2013): 783–87. http://dx.doi.org/10.4028/www.scientific.net/amm.330.783.
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The Truck Ro-Ro transportation in the Three-Gorge Reservoir in the Yangtze river, following its first10 years' rapid development, is facing the external competition from coastal expressway and railway freight transportation and experiencing the internal challenge of changing the shipping organization. Ro-Ro transportation enterprises should take full advantage of the macro policy of the overall scheme of Yangtze river gold waterway construction during the "1025" period, concentrate on the development of automobile Ro-Ro shipping route for Ro-Ro hanging transportation, transportation of heavy loads and dangers goods, make the transformation of transport mods in time and promote its sustainable development.
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Poleva, J. L. "Characteristics of bottom fauna of small reservoirs of the Steppe zone of Ukraine." Ecology and Noospherology 31, no. 2 (October 17, 2020): 105–7. http://dx.doi.org/10.15421/032017.
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The article is devoted to the study of the bottom fauna of small reservoirs of the Steppe zone of Ukraine and the search for approaches aimed at increasing fish productivity. The need to increase the fish productivity of reservoirs has put on the agenda the problem of increasing and improving the forage resources of fish. Increasing fish productivity by increasing stocks of industrially valuable fish species is possible by expanding aquatic invertebrate habitats by acclimatizing or relocating them to new reservoirs, introducing new species into all parts of the food chain that use food resources of reservoirs, i.e. by reconstructing benthic fauna. The main solution to this problem is the introduction and acclimatization of valuable forage aquatic invertebrates. Despite the fact that Ukraine has a very significant fishery fund of freshwater reservoirs, the state of many fisheries enterprises at the present stage is characterized by a decrease in production. The decline in fisheries production is largely due to a set of interrelated socio-economic and environmental limiting factors that emerged during the transition to market relations. The urgency of the problem and the biological productivity of water bodies are determined by the activity of aquatic organisms – an important part of which is the benthic fauna. Rational use of water bodies plays a significant role in the development of the country's economy and the preservation of the ecological situation.
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Bychkov, Sergii A., Petro G. Kyriienko, Yevhenii M. Varlamov, Oleksandr V. Betin, and Lyalya R. Mirsultanova. "Reconstruction of treatment facilities for wastewater treatment at "Antonov" State Enterprise." Environmental safety and natural resources 37, no. 1 (April 2, 2021): 35–43. http://dx.doi.org/10.32347/2411-4049.2021.1.35-43.
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The main priorities of Ukraine's foreign policy in the field of environmental protection have always been political and institutional rapprochement with the European Union (EU). In this regard, Ukraine has made commitments to gradually harmonize national legislation with EU legislation. Therefore, the "Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy" which aimed at improving the protection and improvement of the aquatic environment through specific measures to reduce discharges, emissions and losses of priority substances, as well as the cessation or elimination of discharges, emissions and losses of hazardous substances, currently requires active implementation. Therefore, the issue of reconstruction of wastewater treatment plants at the enterprise of SE "Antonov" is very relevant. An analysis of the operation of wastewater treatment plants at the enterprise of SE "Antonov" was performed. Today, the entire complex of treatment facilities needs reconstruction with design work to implement the latest technologies for extraction of petroleum products from water and surface wastewater treatment, as well as the organization of self-flowing water treatment regime. Measures for the reconstruction of treatment facilities are proposed. The technology of operation of treatment facilities on the principle of self-flowing water treatment regime is offered, which will allow saving energy resources. An improved technology for extraction of petroleum products, floating and suspended solids from wastewater, and purification of effluents for dissolved petroleum products removal is proposed. Proposed measures will improve the environmental situation in reservoirs where treated water flows.
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Porokhnya, Vasyl, Yuriy Shertennikov, Roman Ivanov, and Oleksandr Ostapenko. "Optimization of economic and environmental factors of the logistic system of enterprise management." E3S Web of Conferences 166 (2020): 13001. http://dx.doi.org/10.1051/e3sconf/202016613001.
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The purpose of the study is to develop an economic-mathematical model of the socio-economic system, which takes into account its logistical structure and ecological viability. This allows for optimal budget planning for the new project. The methodology of the study is based on the method of J. Forster, who proposed to consider the logistics system of any enterprise as a system of reservoirs linked by material, financial and information flows. The main result of the study is as follows. The methodology is designed and developed a mathematical program that allows estimating the relative value of fixed assets of production and the number of costs for creating a retail network with the impact of the environmental components. It is shown that this ratio is determined by the value of all key parameters of the enterprise logistics system. This result was obtained through careful modeling of structural changes in the logistics system of the enterprise. All basic communications (flows) between the elements of the logistics system were also considered. Calculations were conducted for the system of the equations which have been written down in shape with discrete-time. At the same time modeling was carried out so that there were no “not physical” phenomena (such as overflow of warehouses, etc.). As a result of calculations, optimum values for all basic characteristics of the new project have been specified. The most actual has separately been considered for practice as a case of optimum planning of storage facilities. The practical importance of research consists that scientific representations about interrelation of the capacity of the enterprise with key parameters of the logistic system can form a basis for more effective planning and management budgetary and production processes at the enterprise, namely: it is more reasonable to plan scales of production and expenses on logistics creation.
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Bueno, Guilherme Wolff, Dominique Bureau, James Owen Skipper-Horton, Rodrigo Roubach, Flávia Tavares de Mattos, and Francisco Ernesto Moreno Bernal. "Mathematical modeling for the management of the carrying capacity of aquaculture enterprises in lakes and reservoirs." Pesquisa Agropecuária Brasileira 52, no. 9 (September 2017): 695–706. http://dx.doi.org/10.1590/s0100-204x2017000900001.
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Abstract: Flooded areas of reservoirs and artificial lakes have been increasingly used for fish production; however, the waste generated by aquaculture has become a concern for the sustainable development of this activity. One of the main strategies adopted by management and regulatory agencies is the use of hydrodynamic models that calculate the carrying or nutrient load capacity of a particular water body and the effect of fish farming. These models are precise in the development of optimal strategies for feeding and waste calculation. This review paper addresses this topic and describes the methodology developed for the analysis and simulation of the carrying capacity for fish production, based on the integration of the Fish-PrFEQ nutritional bioenergetic model and the hydrodynamic model of Dillon & Rigler. This methodology allows evaluating the real contribution of aquaculture waste and assists in the planning and management of aquaculture in these aquatic environments, besides enabling and encouraging producers and the aquaculture industry to use fish food with better nutritional quality and lower environmental impact.