bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Storage Duration and Butyric Acid Supplementation to Egg Quality of Laying Hens in The Third Phase of Production
Authors: Palupi Rizki , Lubis Fitri Novaliya , Syukrima Demila
Published: November 2018

This study was aimed at determining the effect of storage duration and butyric acid supplementation on egg quality of laying hens in the third phase of production. It used experimental method that employed Completely Randomized Factorial Design consisting of 2 factors; Factor A and Factor B. Factor A had 4 treatment levels of supplementation of butyric acid in diets; A0 (control treatment), A1 (0.175 g/kg diets), A2 (0.350 g/kg diets), and A3 (0.525 g/kg diets), while Factor B consisted of 3 levels of storage duration including B1 (1 week), B2 (2 weeks), and B3 (3 weeks). Each factor had 4 replications and each replication or unit consisted of 10 laying hens. The observed variables included egg weight, albumen weight, and yolk weight. The results indicated that the supplementation of butyric acid has no significant effect on the decrease of egg weight, albumen weight and yolk weight. Duration of storage significantly affected to decrease egg weight, albumen weight, and yolk weight. It can be concluded that there was no significant interaction between administration of butyric acid and duration of storage to the egg quality but duration of storage was significantly influenced the egg quality of laying hens in the third phase of production.
Resilience Concept in Indonesian Small Town Development and Planning: a Case of Lasem, Central Java
Authors: Setyono Jawoto Sih , Handayani Wiwandari , Rudiarto Iwan , Esariti Landung
Published: November 2018

Rapid urbanization in developing countries has brought some unprecedented consequences in economic, social, and most notably environmental aspects. Many cities have to be dealing with the challenges of vulnerability as the risk of disasters increases. In responding to the challenges, the concept of urban resilience has been applied as an important part of the current development policies in many countries. In Indonesia, the current spatial policy framework has underlined the importance of integrating vulnerability and environmental carrying capacity into spatial planning document. However, attention has been mostly given to metropolitan or large urban areas. This policy imbalance has put aside the problems faced by smaller urban areas or small cities, although the growing importance of small urban areas or cities is widely understood. In fact, the problems faced by small cities are not less important compared to that of large cities or metropolitan regions, especially those which are in coastal regions. This research aims at analysing how the development and planning of small cities in coastal areas considers the resilience concept. This research applied qualitative methods based on content analysis of planning documents and secondary data. This study selected Lasem, a small urban area in eastern coastal region of Central Java with some 50,000 population, as a case. This research found that the current spatial policy framework is lacking in integrating vulnerability and resilience dimension in the policy and development processes. The research recommended some key important factors to be integrated in the future urban development model.
Prevalence and Determinants Factors that Influence the Behaviour of People with Pediculosis Capitis in Orphanage
Authors: Ghiffari Ahmad , Fitria Anggun Nurul , Anwar Chairil , Azhar Mutiara Budi
Published: November 2018

Pediculosis capitis infestation is caused by Pediculus humanus capitis louse. The prevalence of the disease is still quite high in Indonesia. This disease can cause a variety of problems, from reduced self-esteem, negative social stigma, lack of quality sleep and learning disorders. The study aimed to determine the prevalence and determinants factors that influence the behavior of people with pediculosis capitis in orphanage Kemuning. The cross-sectional design were sampled whole orphanages in the three subdistrict. The respondents were interviewed and examined with pediculosis using a lice comb and a magnifying glass. Later, parasites were storage into bottles containing 70% alcohol. Results showed the prevalence of pediculosis capitis 62% (36 respondents). The highest category was in the age 11-16 years (50.9%); female (60%) and elementary education (54.5%). Based on the illness practice (100%) of the respondents had a bad illness behavior. There is no relationship of age, gender, education, and perception of illness behavior. Further research should proceed on best practice toward disease.
Exploring Historical and Projection of Drought Periods in Cirebon Regency, Indonesia
Authors: Pratiwi Nila Ardhyarini H. , Karuniasa Mahawan , Suroso Djoko Santoso Abi
Published: November 2018

Climate hazards that affect drought could have an impact on agricultural production. Cirebon Regency as one of West Java's food supply areahas experienced hydrological drought because ofclimate variability. Hence, there were many rice fieldswhich lack of water sources for irrigation and resulted in crop failure. Accordingly, this study aims to explore the historical and projection of drought periods as well as the severity of droughts in Cirebon Regency, Indonesia. Interpretation of weather and climate data and Standardized Precipitation Index (SPI) were employed for methods of this studyby using rainfall data only. Based on baseline data (1986-2017) from Jatiwangi Meteorological Stationand Global Circulation Model (GCM) projection simulation (2020-2045) under the Representative Concentration Pathways (RCP) 4.5 scenario, the SPI analysis results show that the drought periodsare predicted to shift in the future with increasing drought severity. This study concludes that climate variability that affects future dry rainfall will still happen in uncertain month periods.Therefore, climatic information is needed in the vulnerable area to reduce the potential impactsthat will occur in the future.
Economic Valuation of Mangrove Forest at Taman Ayu Village, West Lombok Regency
Authors: Rosadi Siti Dian , Patria Mufti Petala , Nisyawati
Published: November 2018

Research regarding economicvaluation of mangrove forest in Taman Ayu Village, West Lombok Regency has been conducted. The purposes of this research were to calculate and analyze economic value of benefit from mangrove foresteco system. Collecting data was conducted through observations and interviews. Results of direct benefit economic value wereobtained fromdirect exploitation by local comunity. Direct value benefit of mangrove forest were Rp. 227.040.000/year. Indirect value benefit obtained frome cosystem service of mangrove forest with a value Rp.1.405.041.200/year. Existence value benefit was obtained by using method of CVM (Contingent Valuation Method)with a value Rp. 1.520.000/year. Option value benefit was obtained from biodiversity value with a valuewere Rp.1.200.000/year. Total Economic Value (TEV) of forest mangrove in Taman Ayu Village were Rp. 1.634.801.200/year.
Comparison Analysis of Anthocyanin Substances in various Plants for Testing Media of Formalin and Borax Content in Food
Authors: Rochyani Neny
Published: November 2018

Anthocyanin substances found in plants are known could be able to indicate acidic and alkaline compounds which means it can indicate the presence of additives in various materials. Food is an important factor in human life as a basic need to grow and survive. The presence of foods containing formaldehyde and borax can endanger human health, therefore there is a need an effort and ingredients to identify the presence or absence of these substances. This can be done by making test equipment that is able to indicate food containing non-food additives. This study focused on comparative analysis of anthocyanin content in some plants to be used as food testing materials containing formalin and borax using filter paper, as well as knowing the effect of solvent variations on mass extraction of anthocyanins and yields. Testing using solvents, namely ethanol with variations, the test equipment is produced through extraction of plants and solvents which are then soaked in filter paper and dried so that they are absorbed therein. The test results show that the anthocyanin substance in all plant samples is good to be used as a test tool but the ipomea batatas L is better and the variation of solvent has a significant influence on the extraction of anthocyanin and rendemen, while the test media extracted using ethanol solvent variations can detect the formaldehyde content and borax well.
Effects of Heat Treatment on the Color Change and Dimensional Stability ofGmelina arboreaandMelia azedarachWoods
Authors: Hidayat Wahyu , Febrianto Fauzi , Purusatama Byantara Darsan , Kim Nam Hun
Published: November 2018

This study aimed to improve the color properties and dimensional stability of gmelina (Gmelina arborea) and mindi (Melia azedarach) woods via heat treatment. Heat treatment was conducted using an electric furnace at 180°C and 210°C for 3 h, with a heating rate of 2°C/min. Wood samples were stacked with and without metal clamp. The effectsof temperature and clamping during heat treatment on the color change and dimensional stability were evaluated. The evaluation of color change was performed using the CIE-Lab color system and the evaluation of dimensional stability was conducted by measuring the equilibrium moisture content and water absorption. The results showed that the overall color changes(ΔE*) in gmelina and mindi woods were mainly affected by the reduction in lightness (L*) due to heat treatment. TheΔE*increased with increasing treatment temperature, with a higher degree obtained in gmelina wood. Application of metal clamp during treatment limited the exposure of wood surface to the heated air, resulting in lower value ofΔE*than the samples without metal clamp. Dimensional stability of gmelina and mindiwoods improved by heat treatment, showing lower equilibrium moisture content and water absorption than the untreated woods. Furthermore, heat treated mindi absorbed less water than gmelina. The results suggested that heat treatment could enhance the color properties and dimensional stability of gmelina and mindi woods for value added products.
Unlicensed Mining as an Alternative Policy: Valuable Experiences in Southeast Sulawesi and East Java
Authors: Sudiro Ahmad , Redi Ahmad , Adhari Ade , Rachman Mardiana
Published: November 2018

Unlicensed mining has been a worldwide issue, including several regions in Indonesia, such as Southeast Sulawesi Province and East Java. The issue that will be examined in this paper is the policies to overcome the unlicensed mining in Southeast Sulawesi Province and East Java. In order to answer the issue, the type of research is socio-legal, by using the primary data in the form of interview result and secondary data in the form of documents the data were obtained from field study and study of literature. The research result shows that the effort to overcome the unlicensed mining by the Government of Southeast Sulawesi Province and East Java are different. The Government of Southeast Sulawesi Province applies the alternative policies such as the unlicensed mining control, aside from the law enforcement policy conducted by the police, prosecutor, and court. This differs from the Government of East Java which views that the law enforcement policy as the only means to overcome unlicensed mining. Unlicensed mining control conducted in Southeast Sulawesi could be an alternative policy since it delivers benefit such as the gaining of valid data of the unlicensed mining location, increasing the community awareness, as the instrument to protect the environment and so forth.
The Prospective Study of Driving Factors on Industrial Estate Environmental Management Policy, Case Study of Industrial Estate in Bekasi Regency
Authors: Wikaningrum Temmy , Hakiki Rijal
Published: November 2018

Pertinent strategic policy required in the environmental management for industrial estate to conduce sustainable management.Due the complexity of the problems, the MDS (Multi Dimensional Scaling) analysis was required in term ofthe dimension of ecological, economical, social, technological and institutional. Prior researches about environmental management analysis in the industrial estate at Bekasi, MDS had been conducted with different approach such as the green rating of PROPER KLHK criteria, integration of quality system and environmental, and expert judgment. The key factors from MDS analysis merged for further study in prospective analysis. It was aim to gain the information about the driving factors which determine the behavior in the system based on the needs analysis of the stakeholders involved. The driving factors were used to form the basis scenario for developing the several prospective alternative strategic policies. The driving factors were taken from the 1st quadrant of mapping result in the depth interview with Bourgeois matrix as low dependency factor but has high impact. The pessimistic, moderate and optimistic alternative prospective strategic policy had been developed. Based on the evaluation of prospective option, optimistic alternative scenario was recommended as the implementative strategy which support the sustainable industrial estate environmental management.
Phytoremediation Potential of Typha orientalis and Scirpus littoralis in Removal of Nitrogen and Phosphorus from Intensive Whiteleg Shrimp Wastewater
Authors: Trang Ngo Thuy Diem , Mo Lam Thi Nhu , Linh Vo Chi , Brix Hans
Published: November 2018

The rapid development of whiteleg shrimp farming in the Mekong delta of Vietnam has an adverse impact on the environment due to large amount of nitrogen and phosphorus content in wastewater and pond sludge/sediment. Phytoremediation is a promising technique to use plant for mitigating environmental impacts from intensively whiteleg shrimp culture. Growth responses, nitrogen and phosphorus removal of Typha orientalis and Scirpus littoralis were assessed at three water levels of +15 cm, +30 cm and +45 cm. They were arranged in a completely randomized design with three replications. The plants were supplied wastewater from intensive whiteleg shrimp tanks once every two weeks. Waterlogged assessment was conducted for 71 days. Water levels significantly affected plant growth rate and nutrient removal capacity. S. littoralis grew well with a lower mortality rate and had no statistical reduction of biomass compared to T. orientalis at the highest water level of +45 cm. T. orientalis had the best perfromance in growth and biomass responses to waterlogged at water levels of +15 cm and +30 cm. The results indicated that S. littoralis was the best of choice to grow in waterlogged condition of the shrimp pond for maintaining water quality.
Damage Analysis of Moldboard Plow
Authors: Pratiwi Diah Kusuma , Chandra Hendri , Utami Nurhabibah Paramitha Eka , Irawan Okta , Purba Arman Natal
Published: November 2018

Moldboard plow is a tool used to cultivate the agricultural land. The material of the moldboard is a double layer where the outer layer is high carbon steel and the inside is a low carbon steel. The findings on the side edge of the moldboard plow are often damaged due to bent deformation and then broken. The study was conducted to determine the cause of the damage through simulation and testing laboratory. The simulation results show that the moldboard is overloaded by its material capability. This is shown also from the results of testing the chemical composition that this material is a low-alloy steel single layer without surface hardening. Hardness tests conducted using Rockwell C show that this steel has a tensile strength of only about 400 MPa. This is reinforced by the results of microstructural observations showing that more than 99% of the phases are ferrite.
Sustainable Food Security Strategy: Study of Land Suitability of Rice and Sago Commodity in Kampong Wapeko, Merauke District, Papua Province, Indonesia
Authors: Hasibuan Hayati Sari , Waromi Leonora Fillany , Utomo Suyud Warno
Published: November 2018

Food resilience is a condition of the fulfillment of food in sufficient quantities, safe for consumption, distributed evenly, and affordable. Carrying capacity is an important factor in fulfilling these aspects. The carrying capacity in this study is assessed from the suitability of land and community acceptance of the commodities developed in Kampung Wapeko. Rice is a commodity that is currently a concern of the Government to be developed in Wapeko. Meanwhile sago is a local food commodity that has been consumed and processed by indigenous people of Wapeko for generations. Based on land suitability analysis, this study shows that rice commodity has a level of land suitability marginal (S3) until not appropriate (N). Meanwhile, sago commodity has appropriate land suitability level (S1) until marginal fit (S2). Analysis of community acceptance of rice and sago commodities shows that rice has become the staple food of the community in Kampung Wapeko, while sago only as a food interlude. The results indicate that rice is more accessible because of the subsidy scheme, while sago is harder to reach, due to the reduced sago tree population and can only be taken at certain times. The sustainable food security strategy designedin this research is developing commodities in accordance with land use directives and creating self-reliance of local communities through the development of commodity cultivation in accordance with their knowledge systems
The Role of Science in The Management of Biodiversity: a Case of Stingrays (Dasyatidae) Research to Provide Basic Data for Aquatic Fauna Conservation in South Sumatra
Authors: Muhammad Iqbal , Indra Yustian , Hilda Zulkifli
Published: November 2018

The study of fish diversity had been reported accross the South Sumatran waters, but the study focus on stingrays (family Dasyatidae) were very limited. In general, many stingrays species face high level of direct exploitation. A recent study to provide valid checklist of stingrays in South Sumatran waters found 14 species: Brevitrygon heterura, Fluvitrygon kittipongi, Fluvitrygon oxyrhyncha, Fluvitrygon signifier, Fluvitrygon sp ‘musi’ 1, Fluvitrygon sp ‘musi’ 2, Himantura undulata, Himantura uarnak, Maculabatis gerrardi, Pateobatis fai, Pateobatis uarnacoides, Pastinachus ater, Telatrygon biasa and Urogymnus polylepis. Following IUCN (The International Union for Conservation of Nature) Red List status 2018, ten species of stingrays are threatened, with four species as Endangered, five species as Vulnerable and one species as Data Deficient. These findings suggest the South Sumatran waters are important habitat for stingrays in Indonesia, and immediate conservation actions plan is needed. In this paper, we demonstrate the role of science in biodiversity management with stingrays (Dasyatidae, an iconic group of rare and threatened fishes) as study case.1.
Healthy Dwelling Design at Wetland Area
Authors: Anwar Widya Fransiska F.
Published: November 2018

Palembang is one of the cities in Indonesia that is dominated by wetlands. City development transforms wetland area to be the location of two types of dwellings; settlement and housing. As the wetland nature is watery covered, dwellings deal with the issue of healthy environment. This paper aims to find out the important aspects for developing healthy dwelling in wetlands. To achieve the aim, the study elaborated the natural character of wetland in Palembang, regulations and architectural theory related to dwelling design. The field observation also conducted to complement the elaboration. The analysis was done qualitatively in four variables; the nature of residential area, structural system, space order and building performance. The result shows that healthy dwelling at the wetland environment design can be done by considering the periodic puddles, stilt structure, physical comfort and flexible ordering system. This study suggests an emphasis on durable structure and flexible space order in designing healthy dwelling at wetlands.
The Prevalence of Diarrhea Based on Knowledge and Environmental Sanitation in Tanjung Lago Village Wetland Area
Authors: Hakim Masagus M. , Irfanuddin  , Hermansyah  , Novrikasari
Published: November 2018

UNICEF in 2013 reported more than 400 children die everyday. The prevalence of diarrhea occurs more in developing countries. Children under the age of five experience an average of 1.6 to 2.3 episodes of diarrhea per year. The aim of the study was to determine the prevalence of diarrhea based on knowledge and environmental sanitation in Tanjung Lago wetland area. This study used cross sectional design with quantitative approach. The sampling technique was simple random sampling with mapping. The sample was 145 housewives with children under five. It used univariate and bivariate analysis. The prevalence of diarrhea in Tanjung Lago was 13.8%. Only a portion of the respondents knew what diarrhea was (53.1%) and the cause of diarrhea (53.8%). The majority of respondents used river water as a source of clean water (91.0%) and refill water as a source of drinking water (98.6%). Most of respondents who have latrines were only less than 10m from daily sources of clean water (91.7%). There is no relationship between knowledge. quality of clean water and availability of latrines with the incidence of diarrhea on children under five. It is important to communicate. inform and educate the public about the environment that can be a medium for diarrhea transmission and the quality of clean water.
Performance of Fire Risk Estimates Based on Soil Moisture of Selected Peat Land Use
Authors: Holidi  , Armanto M Edi , Damiri Nurhayati , Putranto Dinar Dwi Anugerah
Published: November 2018

Each peat land used has a different vegetation that will influences peat soil moisture during dry seasons. The level of fire risk depends on peat soil moisture in every land used. The objective of this research was to evaluate the variability of peat soil moisture at different peat land used during dry season and its impact on fire risk The research was carried on peat land with four types of land used located Sub District of Pedamaran, Ogan Komering Ilir District South Sumatera Province was held from June 2018 to July 2018. We investigated soil moisture variability in this site to a depth 30 cm under four type of peat land used during dry season 2018. The result of the research showed that on the second month of the dry season all peat soil to 30 cm depth have soil moisture category moderate fire risk except on secondary forest category at low risk fire. The higher fire risk of the land used the more attention we must focus to prevent the fire.
Performance of Implementing Smart DFT in Micro Phasor Measurement Unit
Authors: Lai Chao-Yuan , Yang Tien-Yen , Liu Chih-Wen
Published: November 2018

The advance of the signal processing, this paper implement a more accurate digital measurement algorithm, Smart DFT(SDFT) in Micro Phasor Measurement Unit(μPMU), which is based on Discrete Fourier Transforms(DFT) to estimate frequency information from Taiwan power system. μPMU, the sensor we plan to acquire the information from the power system by using the signal of outlet voltage-level 110V in Taiwan, such as frequency, voltage and angle. The performance of SDFT implemented in μPMU represents a more precise frequency information when frequency fluctuation occurred just as the frequency of power system. We offer the results of simulations, stable frequency generated from waveform generator and real frequency from main electricity to compare SDFT with DFT method which implemented in μPMU.
Decentralized Control of PV Inverter to Mitigate Voltage Rise in Resistive Feeder
Authors: Lee Tzung-Lin , Hu Shang-Hung , Yang Shih-Sian
Published: November 2018

Increasing installation of photovoltaic (PV) in the distribution power system has resulted in serious voltage rise, limiting grid-connectable power. This scenario becomes significant in the low-voltage resistive feeder. This paper proposes a decentralized control for distributed PV inverters to mitigate voltage rise. Instead of MPPT (maximum power point tracking) mode, the proposed PV inverter is able to curtail its real power and compensate the reactive power according to the impedance at the installation location. The drooped characteristics between the output power and the impedance are developed so that the PV inverters are able to cooperatively suppress voltage rise based on their local voltage measurement only. Therefore, PV inverters are allowed to supply more power to the utility within voltage limitation. Simulations are conducted to guarantee the proposed control on improvement of voltage rise considering different parameter of feeder. A lab-scaled prototype circuit is established to verify effectiveness in a resistive feeder.
Residential electricity saving on a DC-coupled hybrid microgrid by the real-time simulation
Authors: Liu Yu-Jen , Chang Gary W. , Pai Yi-Feng
Published: November 2018

In this paper, a DC-coupled hybrid microgrid is investigated and a simulation-based electricity analysis manner by using the OPAL-RT real-time simulation is developed for the discussion of the energy-saving issue on the microgrid. Methodologies include modelling, simulation mechanism, and the development of control strategies are presented, and two different electricity price rules are introduced to calculate the residential electricity that from the investigated microgrid based on the designed scenarios. Results show that the benefit of electricity saving provided by the operation of the microgrid system are reported.
Intellectual energy security monitoring of decentralized systems of electricity with renewable energy sources
Authors: Lukutin Boris , Kiushkina Violetta
Published: November 2018

The article reveals an attempt to create an integrated information system for energy security monitoring, for instance in Yakutia, in terms of a vivid and typical representative of isolated areas with extreme temperature conditions. The analysis of area assessment of renewable energy and energy security strengthening of decentralized power supply systems is given. The research considers the worked out algorithm which determines the renewable energy attractiveness coefficient in connection with energy security assessment indicators. The document includes the results of the analysis of the energy situation in Yakutia with the help of geoinformation software product, the illustrative fragment of integrated information system modules. The implementation of the developed system results in fast analysis of occurring issues, indicators calculating as a foundation for strategic platform to manage energy security positions. The system assists to tackle the problems in advance.
Dynamic State Estimation of Electric Power System Integrating Wind Power Generation
Authors: Glazunova Anna
Published: November 2018

This paper is concerned with a problem of operation control of the electric power systems integrating wind farms. Dynamic state estimation is used to obtain reliable information about state variables and to promptly forecast the upcoming operating conditions. To predict the state variables, we assume that the wind farms are loaded first, and the remaining load is covered by traditional generation. Active power balance is maintained by a balancing plant. The problem of considering the information about wind speed at an upcoming time to forecast state variables is studied.
The method of processing of initial climatic data for systems energy studies with renewable energy sources
Authors: Karamov Dmitriy , Perzhabinsky Sergey
Published: November 2018

The article presents the method of preparing of initial meteorological information for system energy research. Method and algorithm is based on long-term meteorological observations. Open access observations can be obtained for any territory. The processing of these observations is based on the chronological method of calculation and the theory of statistics. As a result, long-term array of climate information is formed with discrete step of one hour. This array of climate information can be used for various problems in the energy sector.
Locomotive operation mode - the basis for developing the requirements for the energy storage device on railway transport
Authors: Shatokhin Andrey , Galkin Alexandr
Published: November 2018

Increasing the efficiency of cargo transportation by rail is not only one of the main directions of the company JSC “Russian Railways” but also one of the main tasks of our country in order to achieve sustainable economic growth. Electric rolling stock is the largest consumer of electric energy in the company, that’s why its effective and failure-free operation is the way to solve the set tasks. The paper deals with studies related to the operation modes of a freight electric rolling stock of direct current for the purpose of determining the requirements for electric energy storage device, since it is the electric rolling stock that determines the daily schedule of electric load. The order of the analysis of experimental trips of freight electric locomotives of a direct current on the basis of cartridges of recorders of traffic parameters installed on the locomotive is determined. On the basis of the analysis of conducted trips, the main requirements for the energy storage device were obtained with a single running of electric DC rolling stock, namely the average duration of the operation modes of the electric locomotive, the maximum, minimum, and average values of voltage and current, the average value of the electric energy returned to the contact network, time of charge/discharge, and the useful energy intensity of the electric energy storage device. The studies were carried out with the support of the Russian Foundation for Basic Research for the project No 17-20-01148 ofi_m_RZD/17.
Restoration of damaged geofoundations in transport using highly-effective repair mortar
Authors: Soloviova Valentina , Soloviov Dmitriy , Stepanova Irina , Kasatkina Anna
Published: November 2018

The area of the research is geoconstruction and geostructures in transport. The present study provides modified repair mortars characterized by high penetrating performance, which is important in geoconstruction and transport. Penetrating repair mortars increase compression strength by 1-3 classes, water-resistance by 4-10 atm of the operated concrete geofoundation. Modified repair mortars are of increased crack resistance, they are carbon dioxide and magnesia corrosion resistant material and also they are characterized by high adhesion strength to a concrete geofoundation, which creates a monolithic character of both a restored foundation and a repair geocomposition.
Influence of the drop-beam on the floor slab panel in the construction of waiting rooms for railway stations
Authors: Volinets Sviatoslav , Razov Igor , Filisuk Vladimir
Published: November 2018

The aim to improve the efficiency of wooden panel houses led to a significant improvement in the design of vertical enclosure structures. However, the structure of the floor slab panel was left unchanged. The authors of this work guessed that it is possible to reduce the cost of panel-wooden individual houses without reducing the strength characteristics by increasing the efficiency of the floor structure. With this purpose, drop-beams were introduced, which proved their effectiveness by trial and error method. To determine the influence of the drop-beam on the floor structure, this article presents the calculation of the structure in the first-order approximation according to Hooke's law, and a positive effect on the panel with a span of up to six meters was revealed. Additional research is needed for the panels spanning more than six meters.
Integrated technologies and the problem of creation of large-area silicone carbide devices for high-power converters
Authors: Ilicheva Tatiana , Panyutin Eugeny
Published: November 2018

We consider limitations typical for semiconductor devices of up-to-date converter equipment based on silicon and silicone technologies. The reasons for processing complexities in creating the hardware components of heavy-current devices based on wide-band-gap semiconductors are analyzed. Possible approach to production of large area SiC-diodes and thyristors is formulated, which at post-processing stage allows performing modification of their voltage-current characteristics (VCC) and increasing in its non-linearity coefficient. Based on the concept of integrated power devices containing mesa-elements with VCC with random parameters, the possibility of sequential automated exclusion of those single “non-standard” micro-devices to adversely impact on general voltage-current characteristics of an array is considered. Algorithm is briefly described, and computer modelling of transformation of the reverse branch of integrated VCC occurring in the course of such modification is provided, which made it possible to establish relationship between the typical probability distributions of impurity (including in the presence of dislocations) and certain features of final VCC.
Influence of expansive additive on formation of fresh polymer modified pastes
Authors: Larsen Oksana , Nurtdinov Marsel , Shvetsova Viktoria , Fomina Ekaterina
Published: November 2018

Chemical admixtures are widely used in cement-based mixtures to reduce water demand, increase working time or accelerate strength development. The application of water-soluble polymers in building industry is increasing. The performance of cement mortars and concretes can be improved by the modification of their structure with additives of polymers. The use of polymers in cement-based compositions can decrease the intensity of hydration kinetic and increase the shrinkage deformation. Hardening of polymer-modified cement-based mixtures is associated with drying shrinkage which can significantly decrease crack resistance of cement concretes, especially in the case of polymer dispersions. The influence of polymer admixture with expansive additive on formation of cement-based pastes was investigated. Structure formation of fresh polymer modified cementitious mixtures with expansive additive was experimentally investigated by heat evolution behavior. Structure formation as a function of time and depends from initial mixture design properties such as water-cement ratio, polymer-cement ratio and content of expansive additive.
Development of the system of visual control of electric power consumption by electric rolling stock
Authors: Istomin Stanislav , Perestenko Artem , Dang Cong
Published: November 2018

The paper considers the issue of organization of control of electric power consumption by electric rolling stock by visualizing information on the monitor of the driver's console. With the correct analysis of information coming on board of the electric rolling stock, the train driver makes correction of the driving modes of the train in terms of energy efficiency. In this paper, to visualize information on the efficiency of power consumption by an electric rolling stock on the route, the authors propose using an indicator diagram using a green, white, and orange gradient. The variant of output of the final information on the efficiency of power consumption of electrical energy by an electric rolling stock both within the distances operated by the locomotive crews and within the hauls to the monitor of the driver's console is presented. One of the main advantages of using the technology of visual control of electric power consumption by electric rolling stock is the promptness of correction of decision-making on the rational use of energy resources, the identification of objective reasons for the overspending of energy, and the identification of reference results for the driving of trains. The prospect of development of the research topic is the approbation and implementation of the proposed technical and technological solutions in the production, which will reduce the specific consumption and unproductive electric power losses within the boundaries of the railway accounting zones.
Contact interaction “brush – collector” and working efficiency of locomotive traction electric motor
Authors: Shantarenko Sergei , Ponomarev Evgeny , Borodin Anatoly
Published: November 2018

The working efficiency of locomotive traction electric motors of direct current is largely determined by the reliability of the collector-brush assembly. The paper presents the results of simulation of the contact interaction “brush-collector” in the traction electric motor of an electric locomotive. The influence of the structural features of the brush holder, the conditions and operating modes on the contact area “brush-collector”, and the quality of switching is considered. Technical solutions for improving the current collection quality in the contact “brush-collector” and ensuring the working efficiency of traction electric motors of locomotives are proposed.
Use and control of heat flows in ventilation shafts of subways with Thermal Power Generation
Authors: Barch Anna , Naumenko Sergey , Kotelnikov Alexandr , Muginshtein Lev
Published: November 2018

The variants of schematic technical solution of the system of using secondary energy resources - the waste heat of the subway – for the heating of subway stations are proposed, the results of the feasibility study of the heating of the “Nagatinskaya” station of the Moscow Metro with the use of heat pumps are presented.
Digital control of delivery and release of oil products at fuel depots and gas stations
Authors: Rebrov Ilya , Naumenko Sergey , Godnev Alexandr , Kossov Evgeny
Published: November 2018

The paper shows the topicality of the transition from the metering system for oil products at fuel depots and gas stations, organized with the help of automated measuring instruments, to the use of automated information and measurement systems for oil products metering (IMS OP) of a new generation. The structure diagram of the IMS OP is presented, the implementation of which allows solving the problem of formation of the normalized value of the unbalance between the actual results of measuring the mass of OP in the technological chain “Supplier - Distribution system – Consumer” and the current document flow. The basic algorithm of IMS OP operation is presented, as well as the results of its approbation as a part of IMS OP at the fuel depot of the Dno station of the October Railway.
Increase of energy efficiency of electric power distribution networks by adjustment of reactive energy consumption in a traction network
Authors: Shurova Natalia , Li Valerii
Published: November 2018

In the past few years, there has been a trend towards an increase in the volume of transportation by railway. At the same time, the load on the railway infrastructure increases, in particular, on the traction power supply system. It is necessary to solve the problem of increasing the energy efficiency of the external electric power supply system in the conditions of growing freight turnover and taking into account the uncertainty of the initial data. The paper considers one of the methods of strengthening the traction power supply system. Based on the results of the study, an algorithm was developed for selecting the installation sites and power of compensating devices in a traction network in the conditions of increasing freight turnover and under the condition of increasing the energy efficiency of the external power supply system of traction substations due to unloading of supply lines by reactive power and leveling the load in phases. This methodology includes predicting power consumption, determining the installation sites and power of compensating devices in the traction network under condition of uncertainty of the initial data, and then assessing the energy efficiency of the decision made. A calculation was carried out for the proposed algorithm for a section of the Far Eastern Railway which includes nine traction substations.
Calculation of track component failure caused by the most dangerous defects on change of their design and operational conditions
Authors: Glusberg Boris , Korolev Vadim , Shishkina Irina , Loktev Aleksei , Shukurov Jalil , Geluh Pavel , Loktev Daniil
Published: November 2018

The article considers a calculation method of track component failure resulting from high-level bending stresses caused by the movement of the rolling stock. The method is based on the probabilistic nature of stress value in components, as well as statistic data on the fatigue properties of the metal from which they are made. The method is approved by the calculation example of the most dangerous failure types of turnout components but it can find a wider application. By using this method, the evaluations of failure change can be obtained for all design components that carry a cyclic load on change of their operation conditions.
Electric power accumulators in system of supplying railways with traction energy by direct current
Authors: Rebrov Ilya , Shevlyugin Maksim , Kotelnikov Alexandr , Ermolenko Dmitry
Published: November 2018

The article describes core criteria, which define efficient application of energy accumulators in railway traction power supply system. Installation points for energy accumulators in electric power system of train electric drivers, where application is most effective, are identified. These points are railway sub-stations, electric traction network and traction power system. The main types of energy accumulators, which essentially can be used on railway transport in traction power system – traction sub-stations and traction network, electric motive power, are examined. They can be used on railway transport and. The quality factors of work for traction energy power and electric motive power are presented, improvement of which can be performed using energy accumulators. International experience of energy accumulators application for railway transport is presented. Russian developments and implementation of energy accumulators from domestic manufacturers are examined, both in the traction power system and in the electric rolling stock. The polygons for the most efficient use of energy storage in the traction power supplying system are identified.
Determining the available throughput capacity of the railways using simulation for intelligent management of the transportation process
Authors: Shmal Vadim , Prokofieva Evgenia , Aysina Lily
Published: November 2018

The article is devoted to the problem of determining the available throughput capacity of the railways and assessment of possible infrastructure capacity losses using the simulation method. As a result, the simulation model of the intermediate station has been proposed, which determines the order of trains passing. This model can be used for determination the available throughput capacity in the Throughput Development and Processing Abilities Department and the Train Schedule Department of the Central Directorate of Traffic Management, a branch of JSC «Russian Railways».
Issues of regulation of fillability of a train traffic schedule
Authors: Bessonenko Sergey , Badazhkov Mikhail
Published: November 2018

Fillability of a schedule, down time of trains, quality of a schedule, the use of train paths, reduction of operating costs, train paths, distribution of trains. The problem of reduction of operating costs for the train traffic between technical stations is considered. The analysis of the use of a train schedule is made in this paper. The dependence of operating costs on the route speed, the quality of a schedule and its fillability is established. A solution to the problem of improving the quality of filling the schedule, expressed in the use of train paths of certain categories (direct, or having a stop on the section between the technical stations) is proposed. A method for determining the down time of trains at technical stations is proposed, depending on the fillability of a schedule. The forecast of the change in the main operating indicators and operating costs for the application of the proposed technology for the departure of trains was made.
Influence of regional features of psycho- emotional state of the Russian society on road accidents severity
Authors: Petrov Artur , Evtyukov Sergey , Petrova Daria
Published: November 2018

The article considers issues of assessment of the relation between road accidents severity and psychoemotional state of Russian society. In the context of the hypothesis about the significant impact of people’s awareness of the value of life on their ordinary behavior, four subtasks were solved. Firstly, the difference in road accidents severity between all road accidents and road accidents that happened in alcohol intoxication state was established. Secondly, indicators of the psychoemotional state of people from different Russian regions were identified. Thirdly, dependencies «Road accidents severity = f(Psychoemotional state of people from Russian region)» for two cases - «All road accidents» and «Road accidents that happened in alcohol intoxication state» were defined. Finally, it was found that degree of impact of alcohol intoxication on road accidents severity depends on the psychoemotional state of people from different Russian regions. Produced results can be used in the development of regional programs of road safety management taking into account features of the psychoemotional background in different subjects of Russia.
Creation of a raid complex as a promising direction for the development of the seaport of Petropavlovsk-Kamchatsky
Authors: Miroshnikova Tatyana , Taskaeva Natalia
Published: November 2018

Sea transport has a significant impact on the development of the country's economy. The development of the project to create a raid complex in the seaport of Petropavlovsk-Kamchatsky can give a new impetus to realizing the potential of the region. The problems of the development of sea transport are caused by the lag in the development of domestic seaports. Petropavlovsk-Kamchatsky can become a base port providing services of supply, bunkering, and vessel repair, technical and other inter-river service of ships. The additional cargo traffic of the point will affect the increase of cargo turnover in the Kamchatka Territory and the Northern Sea Route. The construction of the raid complex is a prospect for the development of maritime infrastructure. The authors presented a promising project with the resulting cash flows and calculation criteria for its effectiveness. In order to take into account the main risks associated with the construction of the raid complex, geological, engineering, construction, force majeure, sensitivity analysis to variable parameters has been carried out. The substantiation of the choice of the type of the raid quay facility is carried out. The proposed project has an economic and social effect, will ensure the development of the Petropavlovsk- Kamchatsky sea terminal to the international level. The use of the transit potential of the territory is of strategic importance on a national scale.
A method for optimisation of enterprise logistic supply chain
Authors: Lisienkova Liubov
Published: November 2018

The aim of the study was to develop an optimisation method for management of current assets of an industrial enterprise by the concept of logistics supply chains. The ways of acceleration of working capital turnover at the stages of supply, production and marketing of goods and services have been identified. The necessity of applying the concept of supply chain management to working capital management has been justified. This allowed defining the management principles in the supply chain of an industrial enterprise. As a result, a method for optimization of enterprise current assets of an industrial enterprise as a central element of a supply chain has been offered. It has been proved that the presented method makes it possible to determine the effect of working capital acceleration both in the material and financial subsystems. A tool for realisation of this effect is the structuring of working capital by title deeds.