bluuebunny/crossref_metadata_2025_split huggingface dataset:
Water quality of the Panasen River in the upstream of the Tondano Watershed in a five-year period (2014-2018)
Authors: Wantasen S , Luntungan J N , Tarore A E , Lumingkewas A 
Published: November 2019

Abstract
Water quality of the Panasen River in upstream of Tondano’s watershed is important to study because the Panasen River crosses residential areas, agriculture, and livestock farms, carrying solid and liquid wastes from these activities, which ultimately leads to Lake Tondano. This waste has the potential to become residue in Lake Tondano. The objective of this research was to study water quality of the Panasen River in the upper of the Tondano watershed throughout a five-year period (2014-2018). Water sampling is done by using composite sampling in the one location of Panasen River which become the inlet of Lake Tondano, analyzed using Colorimetry method, and compared with the Quality Satndard in accordance with the Law of No. 82/2001 Class II about Water Quality Management and Water Pollution Control (KLH, 2001). The results showed that 30 parameters (temperature, pH, TDS, TSS, NH3, DO, BOD, COD, chloride, CN, F, NO3, NO2, sulfate, sulphide, PO4, As, B, Ba, Cd, Co, Cu, Fe, Mn, Pb, Se, Zn, Hg, Cr-VI, surfactant (MBAS)) analyzed generally met the Water Quality Standard in accordance with the Law of No. 82/2001, except the chlorine parameter concentrations: Chlorine concentration in 2013 (0,1 mg-0,19 mg/l), 2014 (0,1 mg/l-0,44 mg/l), 2015 (<0,02 mg/l- 0,11 mg/l), 2016 ( 0,05 mg/l − 0,08 mg/l), 2017 (<0,02 mg/l-0,07 mg/l), 2018 (0,03 mg/l-0,06 mg/l). Average chlorine concentrations exceeded Quality Standards according to the Law of No. 82/200101 (Chlorine 0,03 mg/l). The high concentration of chlorine in the Panasen River water bodies is partly due to the application of KCI fertilizers, pesticides to rice fields, horticultural lands, and domestic waste.
Consideration of curriculum approaches of employing ethnomathematics in mathematics classroom
Authors: Peni N R N , Baba T 
Published: November 2019

Abstract
As mentioned by many researchers (e.g., [1,2,3]), students have a belief that learning mathematics is formal and not flexible. Students are required to have fundamental mathematics skills which not only focus on memorizing the formula but also make sense of it. Recently, ethnomathematics is one of the promising approaches to help the students to explore their culture to get the idea of the mathematical concept. Though this ethnomathematics is well-known enough, ethnomathematics in the classroom seems superficial and only is used for the introduction part in the mathematics concept. In this paper, researchers try to review previous studies to identify the research gap and consider a new curriculum approach to fill the gap. Several existing approaches will be examined to develop a mathematical concept by overcoming superficial nature. Strength and weakness of them are identified. As a part of the consideration, an example will be given to strengthening the proposed curriculum.
Analysis of vitamin C and mineral content on rambutan peels exstract
Authors: Lisdiana  , Yuniastuti A , Kusfitasari A 
Published: November 2019

Abstract
Rambutan (Nephelium lappaceum L) is the original Indonesian tropical fruit. Generally people who eat rambutan only eat the flesh. They throw away the rind which is potential to be a waste. On the rambutan’s peel contains antioxidant which potentially becomes basic material of herbal medicine. However another compound has been not discovered yet. Except vitamin C, our body needs some other minerals. This study aims to analyze the vitamin C and other minerals content on rambutan’s peel extract. This study uses exploration study design. The sample of the study is rambutan’s peel on the Sekaran area, Gunungpati. Focus of this study is to test the vitamin C and minerals (Cu, K, Fe, and Zn) on Rambutan’s peel exreact. The vitamin C test uses HPLC and for minerals (Cu, K, Fe, and Zn) uses AAS. The result shows that value of vitamin C on rambutan’s rind extract is 0.0003941mg/100mg, while minerals (Cu, K, Fe, and Zn) are 0.0012996 mg/100mg, 0.0001645 mg/100mg, 0.00384 mg/100mg, and 0.0135065 mg/100mg. These results show that the extract contains vitamin C and minerals (Cu, K, Fe, and Zn).
On the distribution mechanism of green box subsidies
Authors: Medvedeva T N , Artamonova I A , Baturina I N , Farvazova E A , Roznina N V , Mukhina E G 
Published: November 2019

Abstract
Worldwide, agriculture is subsidized. The state is trying to provide financial assistance to agricultural producers. But the WTO framework does not allow these financial flows to be directed in any direction. Support is needed that does not directly affect the formation of prices and does not violate the rules of international trade. Therefore, there is a need to improve the mechanism for the provision of budgetary funding. This immediately invokes a dilemma: to increase the efficiency of their use and to increase the efficiency of production. In agriculture, land is the main means of production. Therefore, the issue of improving the efficiency of land use, and in particular, agricultural land, has received close attention. The system of green box subsidies for crop production, which in Russia since 2013 has been used as a tool of state support for agricultural heat producers, requires further improvement. This type of financing is considered to be unrelated, since it does not define the type of supported products. The funds, in accordance with the new rules, are issued to farms for reimbursement of expenses for conducting agrotechnological field work, improving environmental safety, improving fertility and soil quality, based on the total area of crops. But in the distribution of the regional part of subsides, the methodological approaches for the subjects of Russia have differences that are related to their budgetary support and the attitude of the regional authorities to the agrarian sector. The article proposes the author’s method of allocating budget funds, taking into account the coefficient of costs coverage per unit of soil appraising score. It will enhance the efficiency of their use and, at the same time, increase the efficiency of use of agricultural land. Financing agricultural producers in the region as part of green box subsidies allows them to receive state assistance in a timely manner and gives time to prepare for the sowing campaign in technical and technological terms, as well as to conduct it in the optimum time frame.
Potential of exurbanization in Russia: possibility and priorities
Authors: Farkov A G 
Published: November 2019

Abstract
The article discusses the issues of ruralization and exurbanization as a priority to ensure the development of agricultural regions. The data on the main social groups - potential subjects of exurbanization are given. The factors affecting the process of exurbanization and ruralization are analyzed in relation to Russian conditions. It also discusses the main risk factors for the processes of ruralization. The article also points out the need for a new model for the development of the territorial economy of agrarian regions.
Planning of scientific and technological development of agricultural organizations
Authors: Lenski A V , Dokin B D , Aletdinova A A 
Published: November 2019

Abstract
In context of realization of scientific and technological development scenarios in agro-industrial sector agricultural organizations should tackle the task of planning their production using various technologies, varying the number of workers and enhancing machine and tractor fleet. This task is solved through linear programming techniques. The authors suggest a computational method for identifying the structure of equipment needed to fulfill the scheduled work in the field. The operating costs for the implementation of all technologies within a certain period of time are the objective function. Our method can be applied in dedicated software to strategically plan the scientific and technological development of agricultural organizations
Improvement of the efficiency of hydraulic power steering
Authors: Byshov N V , Kokorev G D , Uspensky I A , Afinogenov I A 
Published: November 2019

Abstract
The purpose of the study is to increase the reliability of the steering system. The article reflects scientifically based recommendations for improving the design of steering. The research method is theoretical studies performed on the basis of the provisions, laws and methods of theoretical mechanics, hydraulics, heat engineering, power flow theory and mathematical analysis. The article presents the results of theoretical studies on the temperature regimes of a hydraulic power steering (HPS), the results of which establish the analytical relation between the temperature pressure of the working fluid and the efficiency coefficient of the HPS. As a result, knowing the temperature of the working fluid, it is possible to determine the efficiency of the HPS in any of its operating modes. The analysis shows that in order to increase the efficiency of the HPS it is necessary to lower the temperature of the HPS working fluid. To this end, a device is developed aimed at improving the efficiency of the cooling fluid in the power steering and allowing increasing the efficiency of the HPS.
Analysis of functioning of potato-terminal technological system based on probability-statistical approach
Authors: Ovchinnikova N , Kosareva A , Bonnet V 
Published: November 2019

Abstract
The process of harvesting potatoes with transport support is considered as the functioning of the potato-harvesting technological system consisting of the subsystems: person (P), machine (M), environment (E) and transport (T). The evaluation of the functioning of the system was carried out according to the developed methodology, based on a probabilistic-statistical approach, using the theory of Markov random processes and correlation and regression analysis. The applied method of time-keeping observations of the work of the potato harvester (tractor MTZ-80 + KPK-2-01) made it possible to carry out element-by-element analysis of the temporal characteristics of healthy and inoperable system states. According to the obtained statistics of the balance of the shift time, some regularity is established between the parameters of the system under consideration. The results of the research can be used to identify reserves for improving the functioning of potato technological systems, as well as to develop measures to reduce unproductive time spent in performing operational, technical, technological and organizational operations for harvesting potatoes.
Improvement of sausage production technology
Authors: Danyliv M M , Vasilenko O A , Ozherelyeva O N , Shestakova Yu A 
Published: November 2019

Abstract
The article presents the results of research on the use of the commercial drug Psyllium in boiled sausage technology, in order to inhibit the possible residual amount of antibiotics. Based on the data of the indicator changes, the optimal dosage was determined, which amounted to 2% of the weight of the main raw material, while maintaining the moisture-binding, water-holding, and fat-holding capacity at 78.85, 85.68, and 80.11%, respectively, and emulsifying ability and stability of the emulsion at 60.12 and 53.48%, respectively. Experimental tests have allowed us to design the recipes of boiled sausages enriched with the biologically active additive Psyllium with high mass fraction of protein (from 12.5 to 15.8%) and low fat content (from 17.2 to 27.3%) compared to the ones presented in the market. It was demonstrated that inhibition of the antibiotic activity is manifested when the biologically active additive Psyllium is introduced into the recipes of boiled sausages at the concentration of 2% of the weight of raw materials.
Operating properties of the coating, depending on the composition during plasma-chemical modification
Authors: Bondarenko D O , Strokova V V 
Published: November 2019

Abstract
Compositions of protective and decorative coatings on the basis of a mixture of high alumina refractory, liquid glass and dyeing salts of metals are developed. The color of the coatings depends on the type of dyeing salt and the concentration of the aqueous solution. Data on the effect of the composition on the operational properties of vitreous coatings obtained by the method of plasma-chemical modification are presented. The increased content of aluminium and silicon oxides provides an improvement in a number of characteristics such as microhardness, heat resistance, water resistance and acid resistance, which are essential in the formation of protective and decorative coating. It is established that at the rate of plasma jet passage up to 15 mm/s a protective-decorative coating with uniform texture is formed, at the rate of plasma jet passage 20 mm/s and more the coating represents a hilly surface with separate and congested deformed drops of frozen melt.
The effect of probiotic Vetom 2 on the microbial intestinal landscape in calves after antibiotic therapyThe effect of probiotic Vetom 2 on the microbial intestinal flora in calves after antibiotic therapy
Authors: Elenshleger A A , Lelak A I , Nozdrin G A , Trebukhov A B 
Published: November 2019

Abstract
Intestinal microflora is directly and actively involved in ensuring the constancy of the internal environment of the microorganism. Disruption of the normal composition of the microflora of the gastrointestinal tract is accompanied by the development of dysbacteriosis. The most important role in restoring the normal intestinal microbiocenosis belongs to bacterial probiotic preparations. The aim of our study was to study the effect of Vetom 2 on the microbial intestinal landscape in calves after antibiotic therapy. Studies were conducted in AO Uchkhoz Prigorodnoye on calves of black pied breed. Five groups of 5 calves each were formed: healthy calves, calves with dyspepsia before antibiotic therapy, calves with dyspepsia during antibiotic therapy, calves after completing antibiotic therapy who did not receive Vetom 2, calves receiving Vetom 2 after completing antibiotic therapy. Feces of calves of all groups were bacteriologically investigated on the content of Escherichia, Streptococcus, Staphylococcus, Salmonella, Pseudomonas aeruginosa. We found that in animals of all experimental groups, the microbial landscape of the intestine is not the same. In diseased calves, before antibiotic therapy, the number of opportunistic microorganisms is much higher relative to the group of healthy animals. During treatment, these figures decrease. The number of conditionally pathogenic microorganisms in calves treated with Vetom 2 during rehabilitation after the end of antibiotic therapy was lower—unlike in the group of calves that did not receive Vetom 2 during rehabilitation—as a result of suppression of growth and development of conditionally pathogenic microorganisms in the intestines of calves after antibiotic therapy by bacterial strains included in Vetom 2.
Clinical and biochemical aspects of acetonemia (Ketosis) of dairy cows
Authors: Trebukhov A V , Elenschleger A A 
Published: November 2019

Abstract
The research goal was to study the dependence of ketosis syndrome severity of cows on the ketone body level in their blood. Ketotic cows were subjected to clinical and biochemical tests. Biochemical blood tests determined the following: total ketone bodies (TKB), beta-hydroxybutyric acid (BHB), acetoacetic acid and acetone (AcAc), BHB/AcAc ratio, glucose and alkaline reserve. It has been found that bovine ketosis occurs as acetonemic syndrome (65% of cases), gastroenteric syndrome (21%), and hepatotoxic syndrome (14%). The comparison of the ketone body levels and ketosis syndromes has revealed that the acetonemic syndrome is accompanied by the greatest TKB and BHB/AcAc ratio values. The gastroenteric syndrome is accompanied by intermediate TKB, BHB and AcAc values, and the minimum levels of glucose and alkaline reserve. The hepatotoxic syndrome is accompanied by the minimum TKB and BHB/AcAc ratio values, and the greatest glucose and alkaline reserve levels as compared to the other syndromes.
New approaches in the study and adjustment of sperm quality in breeding roosters
Authors: Novikova M V , Lebedeva I A , Byuler A V 
Published: November 2019

Abstract
The article describes the results of studies of rooster sperm production using the latest methods of study, previously not used on the bird to diagnose sperm defects. In the production of poultry meat, the very important criterion of success is the productivity and health of the parent flock. The number one challenge for broiler production is to get a broiler chicken from a fertilized hatching egg.
The elemental composition of various biosubstrates of productive horses
Authors: Kalashnikova T V , Blohina N V , Gavrilicheva I S 
Published: November 2019

Abstract
The study of the elemental composition of biosubstrates of horses of heavy breeds in the system blood-milk-wool was undertaken. The average values of the exchange pool of 6 toxic (aluminum, arsenic, cadmium, mercury, lead, tin) and 13 essential elements (calcium, potassium, manganese, sodium, phosphorus, cobalt, chromium, copper, iron, iodine, magnesium, selenium and zinc) in the body of lactating horses were determined. Comparison of the concentration of toxic elements in various horse nutrient depots showed a significant positive correlation with individual essential nutrients.
Theoretical approaches to the concept of human capital in agriculture
Authors: Karpova T , Muravieva M 
Published: November 2019

Abstract
The article deals with the concept of human capital, the fundamental distinctive aspects of human capital, the definition of human capital. Strengthening food security of the country is impossible without identifying imperfections in the systems of labor motivation of economic entities of the second sphere of agriculture. Agricultural production urgently needs to develop a set of such measures, as it is the most vulnerable to crises. In this regard, the analysis of existing methods of stimulating the effective use of labor resources was carried out and new, more advanced methods of improving the efficiency of human capital in agricultural enterprises were developed. The proposed methods of effective use of human capital can be recommended for implementation in agricultural enterprises. They will increase the profitability of production by enhancing human resources and sustainable productivity growth, as well as more efficient use of fixed and current assets.
Forecasting the use of enhanced oil recovery methods in oilfields of Bashkortostan
Authors: Andreev V E , Chizhov A P , Chibisov A V , Sh Mukhametshin V 
Published: November 2019

Abstract
Today oil and gas complex in Bashkortostan is characterized by a deterioration in the quality of raw material base, which is associated with a significant degree of highly productive fields. It is a long-term operation, resource increment due to the discovery of fields unconventional oil, which are confined to low-permeable and weakly thick reservoirs oil deposits with extensive underwater gas and waterfowl zones. At the current stage of unconventional oil development of Bashkortostan oilfields, the urgent tasks are to study the experience of their development; identify peculiarities of the influence of geological and technological factors on the development efficiency of productive layers reserves; geological and commercial substantiation of various methods for enhanced oil recovery. The classification of development objects is based on the methods of mathematical statistics. Recommendations to improve the impact effectiveness on residual and unconventional oil reserves are based on the criteria-based analysis of enhanced oil recovery. The paper describes characteristics of reservoir systems and results of object grouping for oilfields development in Bashkortostan. Taking into account the established criteria for effective use of enhanced oil recovery and geological and field conditions of selected groups of objects with similar characteristics, there are some recommendations to increase the efficiency of oil recovery with targeted formation effects technologies.
Upper Jurassic subsalt complex of the Terek-Caspian trough due to oil and gas content
Authors: Kh Bachaeva T , Daukaev A A , Kerimov I A , Shaipov A A 
Published: November 2019

Abstract
The article considers a complex of factors determining the oil and gas content of the Upper Jurassic subsalt deposits of the Terek-Caspian trough. The potential resources of hydrocarbons are associated primarily with the zones of the Nazran and Harbizhsk saddles, the western end of the Terek and Sunzhensk and Soviet-Right-Bank anticlinal zones. Synclinal and near-side zones are assigned to zones with unexplained oil and gas potential, where it is recommended to conduct regional geophysical studies in conjunction with parametric drilling.
Special aspects of assessing hazard to public health while monitoring the negative impact of solid municipal waste landfills
Authors: Kirilchuk I O , Besedin A V , Timofeev G P , Iordanova A V 
Published: November 2019

Abstract
The present study considers the negative impact of solid municipal waste landfills on the environment and public health. It also assesses hazard to public health caused by the impact of solid municipal waste landfill emissions (by the example of a solid household landfill in the city of Kursk). We have carried out four interrelated stages of research work during the implementation of public health hazard assessment of the municipal waste landfill under study: hazard identification, assessment of dose-response relationship, exposure assessment, and risk characterization. At each stage, we assessed uncertainties that might affect the completeness and accuracy of final conclusions and recommendations. A particular attention was paid to some specific uncertainties that are due to the peculiarities of waste landfills’ operation. These uncertainties can have a significant impact on the results of the study, especially in terms of emissions’ quantitative composition. Thus, despite the fact that the risk level of the solid municipal waste landfill under study was assessed as low, the authors propose the introduction of a degassing system at the solid municipal waste landfill in Kursk. The application of this system will eliminate the release of biogas into the atmosphere, reduce the load on the air and reliably decrease hazard to public health caused by the impact of the landfill.
Phytomonitoring of woody plants in the urban agglomeration
Authors: Seraya L G , Larina G E , Griboedova O G , Petrov A V , Zhukov F F 
Published: November 2019

Abstract
Phytomonitoring including mycological studies with information about plant pathogens, etc., is required to develop strategic directions for maintaining green spaces in urban agglomeration. Mycological analysis of the aerial part and roots of urban tree plants can be used to determine the composition and structures of microbial-plant associations in visually healthy and affected plants. The relevance of these works is due to rapid development of diseases and pests and their active distribution in close proximity to city residents. In coniferous and deciduous plants with symptomatic lesions (Picea abies (L.) H. Karst., Pinus spp., Quercus robur L., Tilia spp.), the species diversity of micromycetes in the phylloplane and rhizosphere decreased by 21–38% compared to visually healthy plants. It was suggested using the following micromycetes as marker organisms for assessing the soil fungistasis of artificial bicenoses and the state of coniferous trees: Dicoccum sp., Fusarium moniliforme J. Sheld., Fusarium culmorum. Perennial urban plants require improvement of the above-ground part using foliar fertilizers and phytostimulants, bioprotection tools, humates, mycorrhizal preparations, destructors of organic compounds of roots and adjacent lawns. The prospects of phytomonitoring of old-growing trees were emphasized. Reconstruction and enhancement of their resistance to aggressive environments require complex works.