scholarly journals Characteristics of economic indicators of growing common carp x amur wild carp hybrids of different genesis in the conditions of industrial hybridization

2021 ◽  
pp. 82-92
Author(s):  
U. Kuts ◽  
◽  
H. Kurinenko ◽  
I. Buriak ◽  
Ya. Tuchaps’kyi ◽  
...  
Keyword(s):  
Production Process ◽  
Common Carp ◽  
Economic Efficiency ◽  
Unit Cost ◽  
Practical Importance ◽  
Research Station ◽  
Productivity Cost ◽  
Study Results ◽  
Develop Technology ◽  
Wild Carp

Purpose. To determine main indicators of economic efficiency in the cultivation of age-1 common carp x Amur wild carp hybrids of different genesis in the conditions of industrial hybridization. Methodology. The material for the study were yearlings of common carp x Amur wild carp hybrids produced from age-8 and 9 Amur wild carp males of different genesis. Cultivation of experimental yearlings was carried out in pond conditions of the Lviv Research Station of the Institute of Fisheries of NAAS. The calculations were performed according to generally accepted methods in economics. Analysis of economic efficiency was based on actual indicators of economic activity of the cultivation of yearlings of common carp x Amur wild carp hybrids taking into account current market prices for fish seeds. Findings. The study identified factors, which affected profit obtained as a result of the production process of growing offspring of new genesis. The most economically promising hybrids, which were obtained as a result of crossing common carp females and Amur wild carp males of different genesis were identified. Growing yearlings of common carp x Amur wild carp hybrids produced from crossing Galician and Lubin carp females with cryo-males of Amur wild carp allows the company to obtain higher conditional profit (6655 and 7412 UAH) and ensure an increase in profitability up to 27.74-28.12% by reducing a production unit cost to 46.8-47.0 UAH. Originality. For the first time, the indicators of economic efficiency of growing yearlings of common carp x Amur wild carp hybrids produced from two genetically different groups of brood Amur wild carp (age-8 and 9) were analyzed. Main indicators of the formation of the cost mechanism in production, which comprehensively characterize the efficiency of resource use and the technical level of the production process, were identified. The economic expediency of growing yearlings of common carp x Amur wild carp hybrids of different genesis in the conditions of industrial hybridization was proved. Practical value. Study results have both theoretical and practical importance and can be used in further studies to develop technology for growing common carp x Amur wild carp hybrids of different genesis in modern conditions. Keywords: yearlings, productivity, cost elements, prime cost, profit, profitability.

Cost management for concrete batch plant using stochastic mathematical models

2006 ◽  
Vol 33 (8) ◽  
pp. 1065-1074 ◽  
Author(s):  
Tarek M Zayed ◽  
Ibrahim A Nosair
Keyword(s):  
Mathematical Models ◽  
Production Efficiency ◽  
Cost Management ◽  
Unit Cost ◽  
Expected Value ◽  
Cost Models ◽  
Productivity Cost ◽  
Batch Plant ◽  
Factor Share ◽  
Construction Operation

Assessing productivity, cost, and delays are essential to manage any construction operation, particularly the concrete batch plant (CBP) operation. This paper focuses on assessing the above-mentioned items for the CBP using stochastic mathematical models. It aims at (i) identifying the potential sources of delay in the CBP operation; (ii) assessing their influence on production, efficiency, time, and cost; and (iii) determining each factor share in inflating the CBP concrete unit expense. Stochastic mathematical models were designed to accomplish the aforementioned objectives. Data were collected from five CBP sites in Indiana, USA, to implement and verify the designed models. Results show that delays due to management conditions have the highest probability of occurrence (0.43), expected value of delay percent (62.54% out of total delays), and relative delay percent. The expected value of efficiency for all plants is 86.53%; however, the average total expense is US$15.56/m3 (all currency are in US$). In addition, the expected value of effective expenses (EE) is $18.03/m3, resulting in extra expenses (XE) of $2.47/m3. This research is relevant to both industry practitioners and researchers. It develops models to determine the effect of delays on concrete unit cost. They are also beneficial to the CBP management.Key words: concrete batch plant, delays, management conditions, cost models, cost management, stochastic mathematical models.

scholarly journals TOKSISITAS LETAL MOLUSKISIDA NIKLOSAMIDA PADA BENIH IKAN MAS (Cyprinus carpio)

2009 ◽  
Vol 4 (1) ◽  
pp. 85
Author(s):  
Yosmaniar Yosmaniar ◽  
Eddy Supriyono ◽  
Sutrisno Sutrisno
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Probit Analysis ◽  
Circulation System ◽  
Research Station ◽  
Apple Snail ◽  
Common Carp Cyprinus Carpio ◽  
Lethal Toxicity ◽  
Carp Cyprinus Carpio ◽  
Lethal Time

Penggunaan moluskisida untuk menanggulangi hama dalam budidaya tanaman padi yang semakin meningkat berpotensi mencemari lingkungan perairan, karena mengandung residu dari bahan aktifnya. Moluskisida niklosamida (C13H8Cl2N2O4) merupakan bahan aktif pestisida yang digunakan untuk memberantas hama keong mas atau siput murbei (Pomacea sp.) di sawah. Dengan demikian, bahan tersebut memiliki potensi untuk mencemari lahan tempat usaha budidaya ikan. Penelitian ini bertujuan untuk mengetahui potensi toksisitas akut niklosamida terhadap benih ikan mas (Cyprinus carpio) yang ditunjukkan oleh nilai Median Lethal Concentration (LC50) 24, 48, dan 96 jam. Penelitian dilakukan di Instalasi Riset Lingkungan Perikanan Budidaya dan Toksikologi, Cibalagung-Bogor. Menggunakan ikan mas dengan bobot individu 2,47 ± 0,13 g. Moluskisida yang digunakan mengandung bahan aktif niklosamida 250g/L. Wadah pengujian berupa 21 unit akuarium kaca berukuran 40 cm x 20 cm x 20 cm yang dilengkapi aerasi serta saluran pemasukan dan pengeluaran. Jumlah ikan uji setiap wadah 10 ekor dengan peubah yang diukur adalah mortalitas ikan. Selama penelitian ikan tidak diberi makan. Tahapan penelitian terdiri atas penentuan nilai ambang atas-bawah, nilai lethal time dan LC50 -24, 48, 72, dan 96 jam. Data diolah dengan analisis probit program LC50. Hasil penelitian menunjukkan bahwa nilai LC50-24, 48, 72, dan 96 jam terhadap benih ikan mas adalah 0,8012 (0,7140—0,8990); 0,5999 (0,5356—0,6719); 0,4511 (0,4067—0,5004); dan 0,3849 mg/L (0,3684—0,4061). Hal ini menunjukkan niklosamida termasuk pestisida yang memiliki toksisitas sangat tinggi (golongan A).The use of molluscicide in aquatic as well as in terresterial agro ecosystem without properly controlled may produce detrimental effects on freshwater fisheries. Molluscicide utilization for golden apple snail (Pomacea sp.) control in rice field has increased. The ingredient potencially has a possibility to pollute aquaculture water. The experiment aimed to determine potency of lethal toxicity (LC50) 24, 48, 72, and 96 hours of niclosamide on common carp (Cyprinus carpio) fry. This research was conducted at Research Station for Enviroment and Toxicology, Cibalagung-Bogor by using molluscicide containing niclosamide of 250 EC. Twenty one glass aquaria of 40 cm x 20 cm x 20 cm in size filled with 10 L of water were used in this experiment equipped with water circulation system and stockted with 10 fry per aquarium. Parameter observed was the mortality of fry and water quality. The tested fish were not fed during the treatment. Preliminary research was performed by finding concentration range, lethal time  dan LC50 of 24, 48, 72, dan 96 hours. Data obtained was analyzed using LC50  probit analysis program. Result of the experiments indicated that the lethal toxicity (LC50) of niclosamide on common carp (Cyprinus carpio) fry were as follows: 24, 48, 72, and 96 hours which were 0.8012 (0.7140—0.8990), 0.5999 (0.5356—0.6719), 0.4511(0.4067—0.5004), and 0,3849 mg/L (0.3684—0.4061). The niclosamide is extremely toxic (classification A).

A New Approach to Mathematical Simulation of Sheduling at an Industrial Plant

2021 ◽  
pp. 103-114
Author(s):  
N.P. Savenkova ◽  
V.S. Laponin ◽  
A.Yu. Mokin ◽  
L.A. Artemieva ◽  
A.A. Dryazhenkov
Keyword(s):  
Production Process ◽  
Raw Materials ◽  
Mathematical Formulation ◽  
Practical Importance ◽  
Optimization Theory ◽  
Inequality Constraints ◽  
Industrial Plant ◽  
Plant Management ◽  
Physical Constraints ◽  
Close Relationship

The purpose of this work was to build a model of industrial plant management and develop a schedule plan based on it. The paper considers a controlled model of product flows at an industrial enterprise. The model describes the interaction between various objects at the enterprise: production plants, manifolds, overpasses, piers, transport. In addition, the model specifies the composition and proportions of the components of raw materials and additives for each type of manufactured product, as well as physical constraints on the objects involvedin the production process. This brings us to the model of both the quality functional and equality and inequality constraints in the mathematical formulation. After building the model, the original control problem was reduced to two problems: direct and inverse. The numerical solution of both is provided in a close relationship between them. The study uses the findings from the theory of mathematical modeling, linear algebra and optimization theory, and leads to the development of the technique of building models of scheduling at an enterprise and numerical methods for solving the corresponding management problems. The research results are of great practical importance and can be used for effective management of the production process in many industries

scholarly journals System for Collecting, Processing, Visualization, and Storage of the MT-Monitoring Data

Data ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 99 ◽  
Author(s):  
Elena Bataleva ◽  
Anatoly Rybin ◽  
Vitalii Matiukov
Keyword(s):  
Practical Importance ◽  
Active Regions ◽  
Tien Shan ◽  
Earth’S Crust ◽  
Management Tool ◽  
Research Station ◽  
Depth Range ◽  
Integrated Monitoring ◽  
Geodynamic Processes ◽  
Earth's Crust

On the basis of the Research Station of the Russian Academy of Sciences in Bishkek, a unique scientific infrastructure—a complex geophysical station—is successfully functioning, realizing a monitoring of geodynamic processes, which includes research on the network of points of seismological, geodesic, and electromagnetic observations on the territory of the Bishkek Geodynamic Proving Ground located in the seismically active zone of the Northern Tien Shan. The scientific and practical importance of monitoring the geodynamical activity of the Earth’s crust takes place not only in seismically active regions, but also in the areas of the location of particularly important objects, mining, and hazardous industries. Therefore, it seems highly relevant to create new software and hardware to study geodynamic processes in the earth’s crust of seismically active zones, based on integrated monitoring of the geological environment in the widest possible depth range. The use of modern information technology in such studies provides an effective data management tool. The considering system for collecting, processing, and storing monitoring electromagnetic data of the Bishkek geodynamic proving ground can help overcome the scarcity of experimental data in the field of Earth sciences.

scholarly journals Radionuclide Transfer in the Zirconium Oxychloride Production Process and the Radiation Effect in a Typical Chinese Enterprise

2019 ◽  
Vol 11 (21) ◽  
pp. 5906
Author(s):  
Shoulong Xu ◽  
Qifan Wu ◽  
Xiaogang Li ◽  
Feng Yuan ◽  
Liangying Tu
Keyword(s):  
Wastewater Treatment ◽  
Production Process ◽  
Effective Dose ◽  
Radiation Effect ◽  
Wastewater Treatment Plants ◽  
Raw Materials ◽  
Zirconium Oxychloride ◽  
Manufacturing Enterprises ◽  
Study Results ◽  
Zircon Sand

The radiation impact on the environment from naturally-occurring radioactive materials in zircon sand is an important issue for zirconium product manufacturing enterprises. In this paper, a typical oxychloride production enterprise has been taken as an example to study the radiation effect and environmental pollution during the whole production process. The transfer and enrichment of radionuclides in zircon sand was studied by analyzing their concentrations in samples, such as products and wastes, which were sampled from every studied workshop, so that the dose rate in the environment and typical facility surfaces of each workshop could be measured. The study results show that the transfer and enrichment of radionuclides occur mainly in workshops of acidification, dissolution, concentration and crystallization. Silicon slag adsorbed some radionuclides, but most of the radionuclides in raw materials are transferred and enriched in waste acid by the concentration and crystallization process. Sludge and wastewater still contain a large quantity of radionuclides after treatment by wastewater treatment plants. This results in a significant increase in U-238 and Th-232 concentrations in river water near the main outlet. The average effective dose of all employees in the studied enterprises was 0.94 mSv, and workers from the wastewater treatment plants had the largest annual effective dose at 11 mSv.

POINTWORK SERVICE LIFE EXTENSION BY MEANS OF UNEVEN STIFFNESS OF TURNOUT CURVE RAILS LINE

2017 ◽  
pp. 7-14
Author(s):  
Ludmila Blazhko ◽  
Vladislav Zakharov ◽  
Yevgeniy Chernyayev ◽  
Yevgeniy Shekhtman
Keyword(s):  
Service Life ◽  
Computational Methods ◽  
Practical Importance ◽  
Side Impact ◽  
Life Extension ◽  
Rolling Stock ◽  
Study Results ◽  
Service Life Extension ◽  
Train Speed ◽  
Side Track

Objective: To reduce side wear of rail elements of side track backing-up rail. Methods: Comparative and computational methods were applied in the study. Results: It was detected that in order to extend the pointwork turnout curve service life, it is necessary to reduce the side impact on an outer rail by using rail pads of diverse elasticity. Practical importance: Application of rail pads of diverse elasticity under the outer and inner rails of a pointwork turnout curve makes it possible to increase the speed of rolling stock movement on the side direction of pointwork and increase the life of a pointwork turnout curve with fixed train speed.

ON ECONOMIC ASSESSMENT OF BALLASTLESS TRACK STRUCTURE EFFICIENCY

2017 ◽  
pp. 63-69
Author(s):  
Ludmila Andreyeva ◽  
Yevgeniy Svintsov ◽  
Yelena Tarasevich
Keyword(s):  
Comparative Analysis ◽  
Practical Importance ◽  
Economic Assessment ◽  
Track Structure ◽  
Advantages And Disadvantages ◽  
Ballastless Track ◽  
Study Results ◽  
Ballast Track ◽  
The Given

Objective: To describe the regulation of railroad traffic parameters in modern conditions, that lead to the necessity of putting into operation the new systems of track design, relevant for regulations in question. Methods: The method of matching, as well as the method of comparative analysis was applied in the study. Results: The advantages and disadvantages of ballastless track structure and conventional ballast track design were compared. The possibility of extensive application of ballastless track structure on modern railroads was analyzed. Practical importance: Ballastless track structure implementation will make it possible to solve practical tasks of using the given type of track design in transport construction.

On prospects for the development of high-speed railway lines in Russia

2017 ◽  
pp. 7-14
Author(s):  
Nikolay Bushuyev ◽  
Darina Shulman
Keyword(s):  
Russian Federation ◽  
High Speed ◽  
Network Formation ◽  
Practical Importance ◽  
High Speed Railway ◽  
Complex Approach ◽  
Study Results ◽  
High Speed Trains ◽  
The Russian Federation ◽  
Traffic Organization

Objective: To consider the prospects for the development of high-speed railway lines (VSM) in Russia. To analyze the fundamentals of “Updated program of high-speed railway communication on the territory of the Russian Federation” approved on November, 23rd 2015 by the decision of OAO “RZhD” board meeting and the social board on the issues of high-speed railway communication in Russia. To formulate the specificities of high-speed traffic organization: promising directions of high-speed headings realization before 2030, as well as the stages of their implementation in Russia. Methods: Multiple regression analysis, as well as the method of multi criterial decisions optimization was applied in the study. Results: The analysis of current and perspective headings was carried out, as well as such characteristics as speed and the running time of “Sapsan” high-speed trains and “Allegro”, “Strizh”, “Lastochka” rapid trains. Special attention was paid to the comparison of strategies given in “Updated program of high-speed railway communication on the territory of the Russian Federation” with the main scientific findings stated in VSM network formation part, obtained on the basis of complex approach to the solution of justification of VSM network formation stage-by-stage approach, taking into account multi criterial estimation of cities and regions’ potential and application of mathematical traffic flow model approach as part of basic regional socioeconomic indices of cities and regions, situated in the zones attractive for future VSM construction. Practical importance: The conclusion was made on the necessity to continue exploratory development in the sphere of topology specification research and stage-by-stage formation of the first VSM in Russia.

Train traffic control at suburban sections

2017 ◽  
pp. 149-158
Author(s):  
Alexey Kotenko ◽  
Andrey Grachev ◽  
Timofey Shmanev
Keyword(s):  
Traffic Control ◽  
Design Theory ◽  
Practical Importance ◽  
Positive Influence ◽  
Service Organization ◽  
Mutual Position ◽  
Unexpected Result ◽  
Suburban Areas ◽  
Study Results ◽  
Schedule Modification

Objective: There is a necessity to determine an approach to the development of train traffic control theory at suburban sections, on the basis of the analysis of conventional methods of train traffic control and service situations. Methods: Simulation methods, design theory and train traffic graphing were applied in the study. Results: The possibility of developing the conventional method of commuter service organization on railroads was demonstrated by means of a new data modeling approach, underlying the system of traffic handling capacity of suburban districts. It was shown, that the basis of such a technology is a train schedule modification. It was established that the schemes on selecting schedule modification, compiled in accordance with the standard methodology, may in some cases present the solutions different from conventional. It was concluded that an unexpected result might be achieved in case of simultaneous alteration of both the initial length of suburban zones and initial number of zone trains, that is zone schedule modeling, and elements of traffic schedule within regions, assigned in accordance with its periods and called configurations. The necessity in determination and modeling of configurations was justified by practical demand in traffic volume account of different types of trains at suburban sections. The simplest example of schedule modification and capacity values response to mutual position of trains and schedule elements in configurations was introduced. Practical importance: New theoretical conclusions, obtained as a result of the analysis of suburban areas’ length modeling results, the number of zone suburban trains and their position in configurations along with freight and passenger trains, provide justification of and scientific background for efforts of creating a new methodology of train traffic control at suburban sections. Such a methodology, built on the principles of zone schedule integrated modeling and the introduced traffic schedule configurations, makes it possible to considerably increase the flexibility of commuter service organization, achieve the reduction of passenger time spent on a trip and train expectation with guaranteed execution of the fixed schedule. According to the conducted analysis, the introduced approach may have positive influence on the capacity of suburban sections as well.

scholarly journals Standardization of blood meal production process at a rendering plant using design of experiments

2021 ◽  
Vol 42 (3) ◽  
pp. 1335-1350
Author(s):  
Juan Carlos Morales Piñero ◽  
◽  
John Alexander Clavijo ◽  
Edison Mauricio Rodríguez Ortiz ◽  
◽  
...  
Keyword(s):  
Design Of Experiments ◽  
Production Process ◽  
Measurement System ◽  
Blood Meal ◽  
Controllable Factors ◽  
Study Results ◽  
Chamber Temperature ◽  
Repeatability And Reproducibility ◽  
Initial Blood ◽  
Drying Chamber

This research focuses on the standardization of the blood meal production process at a Colombian rendering plant through a design of experiments. Initially, 108 samples of blood meal were taken where only 23% achieved the moisture target (7.5% to 8.5%). Therefore, an analysis of the measurement system was performed using a repeatability and reproducibility (R&R) study. Results showed that 39.96% of the observed variability was caused by the measurement system that was out of control. So, it was necessary to improve the method of sampling reducing the participation of the measurement system in the variability of the process to only 3.79%. Later, several experiments were accomplished with a 2k factorial design. Each experiment consisted of a response variable (blood meal moisture), two controllable factors (drying chamber temperature and percentage of rotation of the metering screw), and an uncontrollable factor (initial blood meal moisture). Finally, experiments were carried out and validated observing that, with a drying chamber temperature of 160 °C and a percentage of screw rotation of 29%, more than 97% of the blood meal was according to the moisture target. In conclusion, is confirmed that the design of experiments is a tool that allows a clear path towards optimization and standardization of processes.

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