bluuebunny/crossref_metadata_2025_split huggingface dataset:
The LED phyto lighting for improving the environmental friendliness of growing and productivity of lettuce varieties with red and green leaves
Authors: Proshkin Yuri , Semenova Natalia , Smirnov Alexander , Chilingaryan Narek 
Published: November 2020

Abstract
The intensively developing area of modern phytophysiology is the ecological plants physiology, which important section is the ecology of photosynthesis, by which we understand the intensity and photosynthesis productivity dependence on environmental factors, primarily on optical radiation. The urgent problem of growing plants under artificial conditions is to increase energy efficiency, reduce energy intensity and degree of environmental impact. Using LED irradiators with the function of controlling the spectral composition and optical radiation power, it is possible to increase photosynthesis efficiency and vegetable crop productivity in greenhouses. The comparative study of the effect of sodium lamp radiation and LED irradiators with different spectral composition on the growth and productivity lettuce varieties with red leaves (Anthony, Lolo-Rossa) and with green leaves (Levistro, Lifli), was conducted. The research results showed the different susceptibility of lettuce varieties to the spectral composition of radiation. For the Anthony, Levistro and Lolo-Rossa lettuce varieties, LED radiation application provided the positive effect on plant productivity (8-20%) compared to sodium lamps, and simultaneous reduced in energy consumption of the irradiation system by 40 - 50%. Diodes emission increase in the blue region of the spectrum had a significant positive effect on the synthesis of anthocyanins in the culture of lettuce varieties with red-leaves, compared to sodium lamps. For these varieties, a variable irradiation regime is necessary with a change in the spectrum and increase in the proportion of blue radiation towards the end of growth.
Modified soil surface temperature forecasting method for automated data collection systems
Authors: Bolotov Andrei , Shein Evgeny , Kokoreva Anna , Shishkin Konstantin , Kozhunov Andrei , Ezhelev Zakhar 
Published: November 2020

Abstract
There are presents a developed method for predicting temperature of soil surface for next 24 hours with using data of air temperatures at height of 2 meters. The proposed method is a modification of the Mikhalevsky method, recognized in agrometeorology when predicting radiation freezes. Only dry-bulb thermometer temperature data and relative air humidity are available for application in automated systems. We have therefore obtained formulas for the calculation of dry thermometer temperature. A separate study was to test the simplified formula for calculating saturated vapour pressure above water in the temperature range 0-60 °C. The study showed the complete correspondence of the saturated vapour pressure above water value calculated by different methods in the range 0-60°C. The relative error in the given temperature range is not exceed 0.35%. Thanks to obtained equations, the value of dry-bulb thermometer temperature for the first decade of May 2020 was calculated. The temperature and humidity of the air were measured by the automatic station every hour, and the value dry-bulb thermometer temperature were obtained from psychrometric tables. The absolute error in the calculation of value dry-bulb thermometer according to the proposed formulas do not exceed 1°C in the temperature range 0-16°C.
Digital technologies for efficient farming
Authors: Mironkina Alina , Kharitonov Sergei , Kuchumov Alexey , Belokopytov Alexey 
Published: November 2020

Abstract
In modern conditions, agricultural producers must develop in digital technological formats, attract investment and highly qualified personnel, and work to improve the competitiveness of agricultural products and labor productivity. Using the example of agriculture in the Smolensk region, we consider options for using modern digital technologies that will lead to increased efficiency and competitiveness of enterprises. The project of a digital agricultural platform in the Smolensk region is proposed.
Chemical Assessment of Different Landfill Leachate in Nepal
Authors: Adhikari Bikash , Parajuli Anmol , Raj Manandhar Dinesh , Nath Khanal Sanjay 
Published: November 2020

Abstract
Leachate analysis is a vital aspect of landfill operation & management, but limited studies have been conducted in Nepal in this regard. The study focuses on the chemical assessment of leachate’s characteristics of 4 different landfill sites in Nepal in the year 2019 among which 3 are operational and 1 closed, and their variation due to age, functionality, seasons, and feeding amount and waste composition. The data of leachate samples at two months’ interval was collected and assembled into 4 seasons viz. pre-monsoon (Mar-May), monsoon (June-Aug.), post-monsoon (Sep-Nov), and winter seasons (Dec-Feb.) of Nepal using Principal Component Analysis. One-way ANOVA tool is used to analyze data acquired from laboratory. Gradual increase of pH from pre-monsoon to winter seasons and as per age was observed. Amongst metals and heavy metals, the concentration of Fe descended from pre-monsoon to winter. Other metals like Ni, Pb, and Zn were detected in functional, and intermediate aged landfills. For old LFS, the concentrations of Fe, Cu, Cr, Hg, Ni, Pb, Cd, and Zn were lower. H2S and NH3 were high in intermediate than in mature site without seasonal variation. The chemical assessment generates useful data to construct treatment plants.
Investments to Develop Business Models and Projects in the Circular Economy
Authors: Atstaja Dzintra , Uvarova Inga , Kamilla Kambala Darta , Alberte Viktorija , Stokmane Kate , Gegere–Zetterstroma Astrida , Kraze Sandra , Zapletnuka Galina 
Published: November 2020

Abstract
The development of a sustainable economy and the efficient use of resources are now playing an increasingly important role in the circular economy. Unlike the linear economy, the economy contributes to keeping the value of products, materials, and resources in the economy as long as possible, while at the same time reducing both waste volume and raw material consumption and their environmental impact. The topicality of the research is illustrated by the limited amount of natural resources, climate change and sustainable economic growth, which is pursued by both countries and companies. It is in the economic interest of society as a whole to use existing resources in the best possible way. In addition, the introduction of the circular economy is expected to open up broad opportunities for economic growth for both businesses and consumers. The transition to a circular economic business model requires investment. Funding can be raised through different types of projects, but there is little or no information available in the public area about where and how to obtain financing for circular economy–related projects and what are the general benefits for the company from environmentally–friendly activities.
Classification and solid municipal waste unauthorized landfills reclamation methods
Authors: Penezeva Daria , Smirnov Yuriy , Gorynova Tatiana 
Published: November 2020

Abstract
Due to the rapid production volume and consumption increase, the disposal of municipal solid waste (MSW) problems appeared. In Russian Federation stocktaking municipal solid waste accumulation objects close municipal waste landfills, building incineration and waste processing plants become a hot-button issue, which is one of the significant points in a national program «Ecology». Already formed illegal MSW landfills recultivation problem as well attracts wide attention. Nowadays, a recultivation system takes a long time for reclamation method choice, finding the contractor to perform this type of work. In this time, pollutants penetrate deep into the soil and pollute underground water horizons harming the population health as a result. It is proposed to adopt new definitions of the unauthorized landfill, cluster garbage, and focal Cluster garbage at the Federal level to simplify the system. And also divide those responsible for carrying out measures for liquidation and/or reclamation at the Federal, regional and local levels by category. The necessary recultivation method should be selected based on these results. This unauthorized dumping ground separation method can simplify the existing reclamation system in use, approval of technical tasks for remediation. Furthermore, the proposed classification does not require huge financial investments and save time when conducting procurement procedures. The work was carried out with the support of the center for collective use of the Saint Petersburg Mining University.
Vegetation engineering structure for heavy metals absorption
Authors: Avdeenkova Tatiana , Makarova Anna , Zdanov Pavel 
Published: November 2020

Abstract
The treatment of contaminated water is a pressing issue. As a solution it is proposed to use a biological engineering construction with the aquatic vegetation - a bioplato. The process of water purification takes place at the expense of the natural capacity of a number of living organisms and plants to transform and absorb contaminants [1]. The phytoremediation method helps to extract heavy metals from water and makes it suitable for consumption and use. However, in order to be most effective, it is necessary to choose the planting method and optimal environmental conditions. Therefore, several types of bioplato were created and tested during the experiment: with different planting methods (bare root, container grown) and in the presence of microorganisms (Pseudomonas fluorescens and Rhodococcus erythropolis).The contaminants were water-soluble salts of lead (II) acetate and cadmium chloride. Iris pseudacorus and Typha gracilis were selected for the experiment, as the plants are capable of significant heavy metals accumulation. The sampling was carried out according to GOST R 56237-2014 «Drinking water. Sampling at water preparation stations and pipeline distribution systems» and GOST 31861-2012 «Water. General requirements for sampling». The samples were analyzed using an atomic emission spectrometer with inductively bound plasma iCAP 6300 Duo.Studies have shown that the purification rate of plants in both planting methods is quite high - more than 92 %. In bare root samples, purification is more efficient (99% in the solutions with the cadmium ions concentration 20 times above the threshold limit value (TLV). The use of microorganisms contributed to the reduction of Pb2+ absorption by 18% in the bioplato with bare root planting method. However, a bioplato with container grown planting method in the presence of micro-organisms is 8,7% better at purifying water from Cd2+ ions
A hybrid personal vehicle designed and developed as an alternative to traditional transport
Authors: Dominguez Mateo , Cabrera Danly , Diuldin Maksim , Krasnoshchekov Viktor , Rud’ Yuriy , Bykova Natalia 
Published: November 2020

Abstract
These studies can be attributed to design and construction a hybrid personal vehicle, which is based on the use of restored batteries of the following type hybrid car. The developed vehicle has a speed that depends on the size of the transmission system elements: the wheel speed is 24.07 km/h, the drum speed is 2.82 km/h. The battery life obtained by calculation is 62 minutes, and the average time obtained in road tests is 30.5 minutes, the difference between these times is due to the use of recycled batteries. It was also found that the inclination of the road on which the vehicle is moving affects the efficiency of the batteries Using such transport, we will have health benefits as well as reduced emissions of pollutants into the environment. These reasons should be of great importance when choosing mobility system within cities. It has been established that the vehicle complies with the established regulations for private motor vehicles in force in the city of Cuenca. Such personal vehicle, powered by a treadmill and equipped with an electric engine, was proposed as a new alternative to mobility in the city.
The potential of agrivoltaic systems in the conditions of southern regions of Russian Federation
Authors: Kostik Nikita , Bobyl Alexander , Rud Vasiliy , Salamov Islam 
Published: November 2020

Abstract
The aim of this research is to analyze the potential of agrivoltaic systems (AV) on the territory of Russian Federation. Two configurations of AV systems with 3.2m and 6,4m spacing between photovoltaic (PV) arrays were investigated and on the 4m distance above the crop field. The simulation was performed on the 1 ha of sugar beetroot/lettuce crop field as the most suitable vegetables for shading conditions. The simulation was performed in the conditions of Krasnodar region with average annual solar insolation at 4,20 kWh/m2. Net Present Cost of the agrivoltaic system with minimal 3,2m spacing between the arrays is 558277 $US and cost of energy of this configuration is 0.7$US/kWh. Net Present Cost of the agrivoltaic system with 6,4 m spacing between the arrays is 424216$US and Cost of energy is 0,723$US/kWh. Assuming the reduction of sunlight by 30% from 3,2m spacing and by 10%-20% from 6,4 spacing, expected yield of crops is supposed to be 70%-80% of normal yield. Using agrivoltaics for combined use of land allows increasing the productivity of agricultural land by 45%-70% according to Land Equivalent Ratio. With creation comfortable conditions of agrivoltaic development, such systems can have huge impact on the rural off-grid electrification, creating autonomous renewable source of energy.
The method of agricultural lands conditions determined on basis of electromagnetic separation results for cereal crops and herbal flour
Authors: Logunov Semen , Denisov Roman , Rud Sergey , Meshalkin Valeriy , Zhuchenko Alexander , Kosolapov Vladimir 
Published: November 2020

Abstract
In article the appearance reasons of metal different forms elements in assembled crop of cereals or herbal flour are considered. It’s noted that these elements are almost not extracted from agricultural products by screening, sorting by weight, etc. The different methods (magnetic, nuclear-magnetic, X-ray, etc.) for presence determined of metal particles in this product with elative concentrations determined. A method is proposed which on basis of electromagnetic separation of these products allows us to establish of agricultural land pollution state of different foreign elements.
Investigation of the dustiness of various zones of a metropolis and a set of measures to reduce the negative impact of dust on living organisms
Authors: Grevtseva Anna , Diuldin Maksim , Savchenko Ivan , Meshalkin Valeriy , Zhuchenko Alexander , Druzhinina Galina , Valov Anton 
Published: November 2020

Abstract
One of the negative factors that affects human health is dust. Particularly high dust exposure in megacities. There are no unambiguous approaches to solving this problem. A lot depends on the geographical location of the metropolis. Therefore, for each city, it is necessary to conduct personal research on the situation with the formation of dust from various objects in the climatic conditions of the city. In addition, the composition of urban dust is complex, which depends on many factors. In the study, it is necessary to determine the main sources of dust and the possibility of reducing their activity. It is also necessary to establish the nature of the medium (e.g. dispersion system, etc.) in which dust is present. An important point is the chemical composition of the dust. It is especially important to know about the presence of dangerous chemical elements or radioactive particles in it. The paper shows that wind flows on the one hand contribute to reducing the level of dust, on the other hand, when it is polluted, they sharply worsen the environmental situation. In modern cities, a decrease in green spaces, especially trees, is planned. This fact also needs to be considered as one of the options for reducing dust load. Special attention should be paid to the methods of rapid monitoring of the air environment in real time. Their use will help in time to take the necessary measures to block dust sources.
Research and Improvement of Calculation Method of Flow Pressure in Mechanical Recovery Wells
Authors: Qingrong Xu 
Published: November 2020

Abstract
This paper takes the flow pressure of oil recovery wells in polymer flooding blocks in the past two years as the research data, and conducts field test research based on the analysis of test principles and technical indicators of the equipment. By taking the oil wells at the actual static pressure measurement points as the research object, the author compares the flow pressure of the static fluid with that calculated by the low-pressure test data management and analysis software so as to analyze the rationality and data modification method of the formula. By giving full play to the role of the data of the flow pressure and working liquid level in the dynamic analysis and development program preparation, this paper formulates a reasonable working system for mechanical recovery wells, thereby helping to ensure the sustainable and stable production of oil fields.
The low-pressure test team is responsible for the test of the indicator diagram and working liquid level of the oil well in the polymer flooding block. Comprehensive data such as the indicator diagram, working liquid level, depth of the middle layer, pump depth, depth of pump inlet, and casing pressure, as well as comprehensive water cut are imported into the data management and analysis software, which are used to calculate the flow pressure of the oil wells.
Research on Optimal Scheduling of Home Energy Management System Based on NSGA III Multi-Objective Optimization Algorithm
Authors: Han Ninghui , Li Fei , Chen Songsong , Zhang Kai , Feng Jian 
Published: November 2020

Abstract
With the rapid development of smart grid, more and more scholars pay attention to the Home Energy Management System (HEMS). In order to reduce the user’s electricity cost and improve the user’s electricity comfort, this paper proposes a multi-objective optimization strategy of HEMS based on NSGA III multi-objective optimization algorithm. First of all, this paper designs the basic structure of the HEMS, and builds the temperature-controlled load model, the uninterruptible load model, the photovoltaic power generation model and the battery and electric vehicle model. Then, the improved NSGA III multi-objective optimization algorithm is used to solve the model, and the working state of the schedulable load and the output power of the photovoltaic system are obtained in each period. Finally, the simulation results show that the scheme can effectively reduce the user’s electricity cost and improve the user’s electricity comfort. At the same time, the proposed optimal scheduling strategy can also achieve the optimization goal of the HEMS, which proves that the strategy can provide the safe and reliable optimal electricity consumption mode for the home.
Mineral Content Conversion by Piecewise Polynomial Truncated Singular Value Decomposition Algorithm in the Context of Formation Element Logging
Authors: Yi Qifan , Wang Yachun 
Published: November 2020

Abstract
In spite of diverse types of elements and minerals in the stratum, there are only a few kinds they are mainly concentrated, thus the key to element-mineral conversion lies in the quantitative relationship between main elements and main minerals, which task, however, is challenged in practical logging. Firstly, the element types detected by logging tools are fixed, while the mineral types vary in different regions, which makes it difficult to determine the mineral type merely from logging data accurately. Secondly, the mineral types are generally more than the element types detected in the stratum, leading to a multiplicity of the conversion results. Therefore aiming to solve such challenges, this paper establishes a reasonable conversion relationship between the element and mineral, and ultimately attains relatively precise results through certain mathematical method, i.e. piecewise polynomial truncated singular value decomposition (PP-TSVD) algorithm that eliminates “small” singular values of the ill-conditioned conversion coefficients matrix, and meanwhile makes a superimposition of the effective components in the “small” singular value spectrum in the solution of the TSVD method, which greatly reduces the mean square error of the solution, so as to improve the accuracy and reliability of the solution. In addition, PP-TSVD method can determine either the mineral content of single mineral or diversified types, on condition that the known element types are not less than the mineral types to seek. When mineral types are numerous, the integration of some types into one mineral is imperative in order to establish suitable conversion coefficients. In this paper, based on previous studies and the #JD1 well data measured by ECS logging tool, the PP-TSVD method is employed to study the calculation and conversion between the element content and mineral content.
Study on attenuation coefficient characteristics of the in-seam seismic wave in fault and collapse column
Authors: Yuguang Lian , Jinshan Wei , Wen Li , Yang Jiao , Wenwu Dou , Jianghua Li , Ziyu Li , Zhichao Ma , Guoku Wang 
Published: November 2020

Abstract
Various types of geological structures exist in the working face of coal mine stope. Failure to identify the structural development in advance could defer the timely implementation of reasonable management measures, which may eventually affect production safety and connectivity. As a matter of fact, fine detection and interpretation problems of in-seam seismic wave caused by different types of geological anomalies such as faults and collapse columns can exist simultaneously in the working face of mining. In view of these problems, forward modeling research of three-dimensional seismic wave fields on geological models with fault and collapse column are carried out in this study. Meanwhile, in combination with the imaging results of in-seam seismic wave attenuation coefficient of the exposed fault and collapse column, the characteristics of in-seam seismic wave were analyzed. Following comparative analysis, we found the attenuation coefficient anomaly of the fault is generally banded and weakens at both ends of the fault. The attenuation coefficient of the collapse column presents as an irregular ellipse. The energy of the smaller collapse column has a relatively small attenuation, while the energy of the larger collapse column shows a significantly obvious attenuation.
Research and Application of Hydraulic Strengthening Technology in Excavation Face of Wangpo Coal Mine
Authors: Zhang Hongjie 
Published: November 2020

Abstract
In order to effectively solve the problems of low pre-drainage efficiency, long pre-drainage time and slow tunnelling speed under the condition of broken coal seam in Wangpo Coal Mine, the test and application of ultra-high pressure hydraulic slitting pressure-reducing anti-reflection technology in 3310 transportation and excavation face. According to the analysis of the amount of cuttings, the effect of gas drainage and the extraction radius, the radius of the slit is 1.46∼1.61m, the flow rate of single hole drainage can be increased by 1.5∼5.5 times, and After pre-draining for 7 days, the pre-drainage holes arranged at a pitch of 5 m at the bottom of the hole can be drawn to the standard. The results show that the ultra-high pressure hydraulic slitting technology can effectively improve the coal seam pre-drainage effect, greatly improve the gas drainage efficiency, shorten the gas drainage time to the standard and increase the coal roadway excavation speed by 35%. In addition, the hydraulic slotting technology can increase the effective influence radius of the drainage hole and reduce the amount of pre-drainage holes.