bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of reaction time on properties of TPEG type polycarboxylate superplasticizer
Authors: Jiang Zhuojun , You Renliang , Fang Yunhui , Guo Yuanqiang , Lin Tianxing
Published: February 2022

The effects of dropping time and holding time on the properties of TPEG type polycarboxylate superplasticizer paste and concrete were studied with 20000l stainless steel reactor as production equipment, ammonium persulfate as initiator, sodium hypophosphite as chain transfer agent and reaction temperature of 60 °C. The experimental results show that within the experimental range, the dropping time has little effect on the initial dispersion effect of TPEG type polycarboxylate superplasticizer and has a great impact on the slump retention performance. The holding time has a great impact on the initial dispersion effect and slump retention effect of TPEG type polycarboxylate superplasticizer. The dropping time and holding time have little effect on the 3d, 7d and 28d concrete compressive strength of TPEG type polycarboxylate superplasticizer.
Combination of Photovoltaics and Organic Light-Emitting Diode Display
Authors: Wang Jiarui , Qiao Xinyue
Published: February 2022

Clean energy has the potential to deliver universal energy access in a way that is safe and powers bettering the environment for everyone. Photovoltaics, which transfer solar energy to electrical energy, can generate clean energy. This article introduces the internal structure, function, and working principle of each part of the system after combining photovoltaics and OLEDs. Then, this article concludes with some advantages: the system’s energy source is clean energy and the system’s other expanded applications. This new material-plastic electronic also faces some challenges. For example, solar energy received by the system is affected by factors such as latitude, which affects sunshine hours in a particular region, and weather, which affects light intensity. Moreover, there are several concerns like battery thermal management and battery life in practical application scenarios. So, this article needs to do more research and further experiments to improve the efficiency of solar power and maintain the health of the battery. In the future, this article suggests doing regular experiments to observe the system’s efficiency and find the direction for improvement.
Study on Organic Modification of Lanthanum Oxide
Authors: Sun Yunhan , Wang Xiaoning , Jia Qingxiu , Yang Jian
Published: February 2022

In this paper, lanthanum oxide was modified by silane coupling agent (KH560), titanate coupler NDZ-201 and dopamine hydrochloride (DP). The microstructure and chemical structure of modified La2O3 were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS), and the dispersion of modified lanthanum oxide in polypropylene (PP) was investigated. The results show that the three modifiers can improve the organic properties of lanthanum oxide, and the interfacial compatibility between dopamine modified La2O3 and PP is better than the other two modifiers.
Experimental study on hygrothermal accelerated aging effects of transparent fire resistive wood structure coatings
Authors: Zhang Tianhao , Huang Hao , Ge Xinguo , Zhang Zejiang , Li Pingli
Published: February 2022

In this paper, the durability of fire performance of a transparent fire resistive coating for wood structure was studied using hygrothermal accelerated aging. The aging effects was analysed using SEM/EDS and fire test. The results show that after 21 days of aging, the flame-retardant components gradually precipitate to the surface. The coating basically loses its expansion ability and the char layer shows a low-strength lamellar structure. The flame-retardant time of the coating decreased by 43.48% from 23 min to 13 min.
Experimental study on bond strength failure of GFRP lap joints
Authors: Xiao Xiao , Xiong Gui , Dang Hao
Published: February 2022

Bonding has many advantages such as high adhesive strength, peel resistance, good toughness, shrinkage and corrosion-resistance, compared with bolting, welding and other connection patterns, which is the basic connection of the composite materials. The mechanical properties of the bond depend on the type and geometric parameters of the bond. In this paper, experiments were conducted to study the bond strength failure of GFRP single and double lap joints and explore related influencing factors. The variable factors of test specimens include bond type, length and thickness. The quasi-static tensile test was carried out at room temperature to analyze multiple influencing factors of lap joints and characteristic of GFRP bond failure strength. The results showed that the failure of the bond usually occurred at the interface of bond, and bond types, length and thickness have significant effects on the failure of bond. Failure strength increased firstly and then decreased with the increase of adhesive thickness. With the increase of bonding length, the failure mode of the double-lap joint become complex failure mode, which is accompanied by GFRP delamination near the surface of fiber of the bonding.
Syntheses of Coordination Polymer Glass Membranes and Their Gas Separation Performance Research
Authors: Wang Jiaming
Published: February 2022

Purity requirements for gas in daily life and industrial production have been increasing. Coordination polymer glass membranes can solve the problem of brittle and fragile inorganic membranes and retain some porosity. We obtained the novel CP material, to obtain self-supporting glass membranes by means of sheeting-melting-cooling, the selectivity of the agCd-P-dmbIm membrane in H2/CO2, H2/N2 and H2/CH4 are 68.8, 33.8 and 49.5 respectively. Its hydrogen permeance is 235 GPU, and its permeability is 73621 barrer. The results show that the diffusion coefficient of H2 is much greater than that of CO2. Relevant mechanism proved that the gas molecular size sieving properties of coordination polymers is the key factor to achieve efficient gas permeability and selectivity. agM-P-dmbIm is hydrogen purification membrane. Coordination polymer glass membranes have great potential in gas separation research.
Preparation and Catalysis of Pd Loaded PS/Fe3O4@PPy/Pb Magnetic Composite materials
Authors: Fang Xue , Su Guiming , Jiang Haijian , Chen Mingyue , Li Tianzhi , Song Meihui , Zhang Xiaochen
Published: February 2022

Fe3O4 particles were prepared by chemical co-precipitation method. Then, the functionalized PS nanoparticles were mixed with the prepared Fe3O4 particles, the PS/Fe3O4 magnetic nanocomposite were obtained by electrostatic interaction; the pyrrole monomer was added, and the pyrrole monomer undergoes oxidative polymerization on the surface of the composite. The PS/Fe3O4@PPy composite coated with polypyrrole was obtained. Finally, the PS/Fe3O4@PPy/Pb magnetic composite was prepared by the deposition-precipitation method. The morphology and structure of the composite particles were analyzed by scanning electron microscope, X-ray diffractometer, Fourier transform infrared spectrometer, and thermogravimetric analyzer. The concentration of organic dye molecules was determined by ultraviolet-visible spectrophotometer. The results showed that the dispersion of the PS/Fe3O4@PPy/Pb magnetic composite was excellent; the PS/Fe3O4@PPy/Pb magnetic composite showed excellent catalytic performance in the reduction of methylene blue with sodium borohydride as reducing agent. The composite could be recycled and reused many times.
An Easy Preparation of BaTiO3/PAM organic/inorganic hybrid material Using Surface-Initiated Process
Authors: Wei X. F. , Li W.Z. , Chen H.F. , Lv Mengge , Wang H.W. , Qi X.W.
Published: February 2022

We developed an easy surface-initiated polymerization process to prepare BaTiO3/PAM organic/inorganic hybrid hydrogel material, which would have potential applications in intelligent soft substances. As various organic–inorganic hybrid nanoparticles can be synthesized by this property, it has broad applications in fields such as nano hybrid material, nanocomposites and medicine.
Development of a Temperature Calibration Device for Refrigerated Centrifuge
Authors: Wei Gong , Ren Tingting , Feng Li , Zhang Qiuquan , Cai Qian
Published: February 2022

This article presents a novel design of a temperature calibration device and calibration procedure for refrigerated centrifuge. The temperature calibration results of 8 typical types of refrigerated centrifuges and the uncertainty analysis shows that the calibration device and calibration procedure presented in this article can meet the requirements of the temperature calibration for refrigerated centrifuge and ensure the temperature reliability of refrigerated centrifuge in its daily use.
Modulation Method and Research of Vienna Rectifier in Hybrid Rectifier
Authors: Yan Tengyue , Jia Wenchao
Published: February 2022

With the development of modern industry becoming more intelligent, in the research field of power electronic devices, the demand for its comprehensive performance has further increased. Thus, the hybrid rectifier came into being. Hybrid rectification technology means that the controller controls two rectification devices connected in parallel with different structures to realize the conversion function. Among them, there is the most extensive research on a type of hybrid rectifier, with many variations. The circuit structure consists of two rectifiers connected in parallel with different structures. One part adopts a three-phase controllable rectifier structure, the other part adopts a diode uncontrolled rectifier bridge and a single power tube cascade form. We call the two parts rectifier A and rectifier B.
Convolutional neural network microseismic event detection based on variance fractal dimension
Authors: Han Guoqing , Yan Shuang , Chen Zejie , Chen Lin
Published: February 2022

Microseismic event detection helps to predict outbreak catastrophic problems and has essential applications in resource exploration. Low SNR microseismic signal detection is a challenging task in microseismic detection. In this paper, we propose a (convolutional neural network microseismic detection method based on variance fractal dimension) VFD-CNN method based on the variance fractal dimension (VFD). In this method, signals and background noise are first measured by variance fractal dimension, which can effectively extract seismic nonlinear features. These fractal features are then fed into VFD-CNN to distinguish signal and noise. Finally, the variance fractal dimension of the test data is fed into the optimal model to detect microseismic events. The VFD-CNN method can significantly improve the detection capability of low SNR microseismic signals. To verify the performance of the VFD-CNN method, We use the VFD-CNN method to synthesize microseismic data. Furthermore, the comparison experiments were conducted using VFD-CNN and short-term averaging to long-term averaging (STA/LTA) algorithms. The results show that the VFD-CNN method can significantly improve the detection of low SNR microseismic signals, and its precision is substantially higher than the STA/LTA algorithm.
Research and Implementation on Key Technologies of Assembly Assistance System based on Augmented Reality
Authors: Zhao Jianhui , Mei Xiaolin , Ma Jinsheng , Wang Rui , Zhang Ruyi
Published: February 2022

Aiming at the demand of assembly assistance for complex industrial products, this paper studies the structure and key links of augmented reality aided assembly system, and takes a gear pump as an example to realize the parts detection function based on yolo neural network algorithm. On this basis, the assembly assistance system is built based on Vuforia, and the user interface is designed, realizing the functions of assembly progress identification and assembly information prompt.
Gesture recognition real-time control system based on YOLOV4
Authors: Zheng Zhuowen
Published: February 2022

With the development of industrial information technology in recent years, gesture control has attracted wide attention from scholars. Various gesture control methods have emerged, such as visual control, wearable device control, magnetic field feature extraction control. Based on one of the visual gesture control methods, this paper proposes a visual gesture control method applied to music box control by combining YOLOv4 object detection network. We design seven main gestures, reconstruct gesture datasets, and retrain the YOLOv4 object detection network by the means of the self-built datasets, further build a music box gesture control system. In this paper, we obtain the recognition accuracy of 97.8% for the object detection network in the gesture control system after a series of experiments, and recruit eight volunteers to conduct experimental tests on the self-built gesture-controlled music box system, mainly to quantify the time of executing a single command, attention concentration, etc. The results show that compared with the traditional control method, the visual gesture control method ensures the accuracy while has a faster response speed and takes up less of the user’s attention.
Design and Implementation of Dual-channel 100MSPS Data Acquisition Module
Authors: Yang Hong , Li Xuemei , Wang Yifan , Xu Bo
Published: February 2022

Aiming at the problems of single channel acquisition mode of traditional oscilloscope recorder, insufficient acquisition flexibility, low acquisition frequency, transmission delay, etc., this paper proposes a design method of dual-channel signal acquisition module based on FPGA hardware platform. This design uses a high-sampling-rate ADC chip AD9268 as a dual-channel acquisition port to achieve 100MSPS sampling frequency acquisition, while simultaneously transmitting the converted digital signal through the SerDes serial port. In the FPGA implementation process, a channel conditioning module is added to adjust the gain and offset of the input data. The test results show that the system can realize synchronous sampling, processing, and transmission of the input analog signal, and the acquisition process is stable, and the collected signal has a high degree of restoration and no distortion.
Simulation Analysis of RBW Parameters of Spectrum Analyzer Based on Convolution Approach
Authors: Su Dongchu , Yang Jian , Yuan Chunxing , Chang Bowei , Luo Siwei , Li Chenyong
Published: February 2022

Resolution Band Width (RBW) represents the 3 dB bandwidth of the internal IF filter of the spectrum analyzer, the setting of which greatly affects the clarity of the output spectrum line of the spectrum analyzer. Its reasonable value is essential to correctly distinguish the signals of different frequencies, especially in the case of aliasing of the output spectrum. Thus, it is of great significance to study the relationship between the setting of RBW and the output spectrum. Due to the expensive spectrum analyzer, the RBW adjustment range, frequency range and output accuracy are limited, so this paper will apply an economic, RBW arbitrary adjustable, high accuracy equivalent convolution method for the simulation of the RBW parameters of the spectrum analyzer, and evaluate the effect of RBW and filter type on the degree of output spectrum aliasing based on a typical equal-amplitude two-tone signal input, and finally give setting suggestions on RBW and filter type.
Ferroelectric Properties of KNbO3 Doped with Na : First-Principles Calculations
Authors: Wang Peng , Shen Haolei , Xia Kui , Zong Wenjun , Tan Rongri
Published: February 2022

The traditional BaTiO3/PbTiO3 ferroelectric material has excellent performance and is widely used, but the Pb in the material has polluted the environment. Studies have found that other ferroelectric materials can also have good performance after doping and improvement. The problem is that the development is too slow. If a reasonable explanation can be given for the changes from the original structure, the research and development process will be accelerated. In this paper, we investigated the ferroelectric properties at the orthogonal-crystal KNbO3 using first-principles calculations coupled with a phenomenological theory model. By replacing the K atoms with Na, studying the stability, polarization, energy band, and density of states after replacement doping, explaining the internal mechanism of its generation, and providing theoretical support for the research and development of new materials.
A Design of Wideband Microstrip-to-Microstrip Vertical Transition for RF Circuits
Authors: Sun Shangbin , Chen Yuanxiang , Fu Jia , Lin Shangjing , Zhu Hu , Zhao Xiaobo , Yu Jianguo
Published: February 2022

With the miniaturization of RF circuits, the transmission of signals in different layers becomes important. How to realize the vertical transition structure with wide transmission band and low loss has become the focus of research. In this paper, we proposed a broadband vertical transition structure design based on cavity coupling. This model achieves broadband coupling between the upper and lower microstrips by adding parabolic patches, which improves the model transmission bandwidth. The simulation results show that the optimized model has ultra-wideband transmission characteristic, the 1dB bandwidth is 3.32 GHz-10.42 GHz and the fractional bandwidth is more than 103%. What’ more, the thick ground layer of the model improves the heat dissipation performance. Therefore, this structure is very suitable for high-speed and high-density RF circuits.
Operation Anomaly Monitoring of Customer Service Data Analysis Platform Based on Improved FP-Growth Algorithm
Authors: Yang Jing , Gong Lihua , Liu Kunpeng , Xiu Letian
Published: February 2022

Aiming at the problems of long time-consuming monitoring and poor monitoring accuracy in traditional customer service data analysis platform operation abnormality monitoring methods, a customer service data analysis platform operation abnormality monitoring method based on the improved FP-Growth algorithm is designed. Obtain customer service data sets, classify data types, filter customer behavior, identify the operating status of the data analysis platform, improve the FP-Growth algorithm to build a rule configuration model, set the platform safety factor threshold, and keep the reconstruction error of customer service data to a minimum Within the scope, optimize the abnormal monitoring mode. The experimental results show that the average recovery time of the proposed customer service data analysis platform operation anomaly monitoring method is 5.239s, and the average platform operation anomaly accuracy rate is 97.3%, indicating that the customer service data analysis platform integrated with the improved FP-Growth algorithm operates abnormally The monitoring method performs better.
Research On FPGA-based High-speed Data Optical Fiber Transmission
Authors: Wang Xianbo
Published: February 2022

This article briefly introduces the principles and advantages of optical fiber transmission and the characteristics of the integrated IP core developed by Xilinx. Aiming at the advantages of optical fiber communication, Xilinx ZYNQ7000 series FPGA chips are used to design a high-speed data optical fiber transmission scheme based on FPGA. This solution uses the method of creating Block Design for design and development. It uses Verilog hardware description language and Vivado development software for experimental verification. In the FPGA simulation environment, the code is converted into a binary file and written to the chip through the JTAG interface for testing, and the experimental data is analyzed. As a result, it meets the design requirements of high-speed data transmission, which is of great significance to the research of high-speed data optical fiber transmission.
Power Grid Field Violation Recognition Algorithm Based on Enhanced YOLOv5
Authors: Zhu Wenwen , Shu Yuanzhong , Liu Shuo
Published: February 2022

Aiming at the problem that Yolov5 is difficult to accurately detect backlighting and small samples in national grid power transmission and distribution operations, studies the illegal behavior technology of “two wear and one wear” in power grid operation, and proposes a violation recognition algorithm based on the enhanced YOLOv5. First, add a new detection layer and use the BiFPN (bi-directional feature pyramid network) layer for feature fusion, so that feature layers of different scales can better learn the weight distribution and enhance the fusion ability. Secondly, add CBAM (Convolutional Block Attention Module) module before the output detection layer feature map to make full use of channel and spatial information to achieve better model accuracy and recall. The experimental results on the six self-made data sets show that the mAP of this method is 91.0%, which is 5.6% higher than the original algorithm, indicating that the model has stronger predictive ability and robustness for the identification of personnel and safety tools in transmission and distribution scenarios.
Sustainable Natural Solar Drying of Microbreweries Spent Grains: A Comparison with Common Electric Convective Drying
Authors: Fabani MP , Capossio JP , Reyes-Urrutia A , Rodriguez R , Mazza G
Published: February 2022

In recent years, local microbreweries are increasingly capturing the consumer’s interest with a wide range of different types of beer. Because of the insertion of microbreweries scattered around the country, large amounts of spent grains have been made available locally to be used, for instance, as animal feed. However, those spent grains, which are mainly formed by malting barley (or malt), are materials suitable for further valorization. Turning the spent grains from waste to a raw material that can be later used to produce non-traditional flour requires a thermal treatment, i.e. a drying process. A natural convection solar dryer (NCSD) was evaluated as an alternative to a conventional convective electric drying system for the dehydration process of local microbrewer’s spent grains. Two types of breweries’ spent grains-BSG-(Golden Ale and Red Ale) were dried at different daytime hours. Sustainability indexes, Specific Energy Consumption (SEC), and CO2 emissions of the conventional dryer were calculated and used to determine the environmental benefits and drawbacks of the NCSD.
Fluidized Bed Technology: Challenges and Perspectives
Authors: Baeyens Jan , Shuo Li , Dewil Raf , Zhang Huili , Deng Yimin
Published: February 2022

Fluidized beds are recognized as important gas-solid contacting technology in chemical synthesis reactors, in combustion/gasification/pyrolysis of coal and biomass, in multiple drying applications, in solar thermal energy capture and storage, and more recently also in the production of hydrogen by either catalytic steam reforming of organic feedstock, or thermal water splitting using oxidation-reduction cycles. Although the process understanding and operational experience has significantly been expanded over the past decades, some challenges remain the be dealt with, as discussed in the paper. These challenges are mostly of gas-solid hydrodynamic nature.
Preface
Authors: Solovev D B
Published: February 2022

The conference represents an informational platform for accumulation of expert opinion on projects and initiatives that are aimed at implementation of farsighted scientific research and development; it allows to present scientific and practical achievements to a wide circle of researchers.

Sections of the conference are of interest for the broad range of experts in the sphere of development of innovative solutions and organizing events that increase the efficiency of economic and innovative activities.

The international program committee has selected some papers for publishing in the IOP Conference Series: Earth and Environmental Science.
Assessment of the Quality of Transport Service for Vladivostok City Population
Authors: Volodkin P , Ryzhova A , Shirokorad O , Arkhipov S
Published: February 2022

Transportation of passengers by city transport plays an important role in the transportation of urban residents in Russia. The preference for personal transport over public transport leads to congestion of highways, increases the time of movement around the city, both by personal and public transport, and causes environmental pollution. For the population to choose public transport, it is necessary to improve the quality of transport services, and first of all, the transport accessibility of urban passenger transport. The main types of urban transport and their scope have been identified. The data of a questionnaire sociological survey of more than 16 thousand city residents were analyzed, 11 bus routes (12% of all routes) were studied. The standards of transport services were established and the analysis of deviations of the actual values from the declared ones was carried out. Individual indicators of comfort, timeliness, regularity, information content, as well as satisfaction with the quality of transport services in general in the city districts were assessed. Recommendations for reforming the city’s passenger transport are presented.
Biodegradable Food Packaging: Benefits and Adverse Effects
Authors: Shershneva E G
Published: February 2022

The article considers the problem of transition to environmentally safe types of food packaging materials. Features of modern biodegradable food materials and evolutionary generations of packaging materials are explored. Based on literature review, the author identifies a new generation of biodegradable food packaging – smart bio-packaging, representatives of which can be considered materials that have both “green” properties and advanced consumer qualities. Examples of such innovative biodegradable packaging are given: films and containers with antiseptic properties, enriched with vitamins and edible. It is generalized that bio-plastic has acceptable organoleptic, mechanical and chemical properties and can be an alternative to synthetic polymers. At the same time, the analysis of biopolymer production from the resource position revealed adverse environmental, economic and anthropogenic effects. In this context, the author presents “Paradox of ecological ricochet”: a contradiction between positive properties of biodegradable food materials and problems of increasing environmental burden for obtaining biomass. It is concluded that eco-safety of bioplastics depends on such factors as composition of materials, production process and how these material is destroyed after use.
Economic Impact of Climate Change in the Midland of Russia
Authors: Ozherelev V N , Ozhereleva M V , Dyachenko A V
Published: February 2022

The article discusses the global climate warming impact on the most important agro-climatic parameters of the southern half of the Russian Federation European part. It has been established that in recent years a stable zone of moisture deficiency, stretching as a strip from Bryansk to the border of the Chelyabinsk region with Kazakhstan, has formed. At the same time, the most stable moisture deficit in summer is observed in the Bryansk region. For 2014-2016 the amount of moisture deficit according to the Bryansk State Agrarian University meteorological station was 47%. Due to the increasing climate aridity, the Bryansk region is approaching in agroclimatic parameters to traditionally grain regions. The increase in the amount of active temperatures turns its territory into an agro-climatic analogue of the northwestern part of the United States Corn Belt. A significant warming of winter, as well as a reduction in stable snow cover period, increases the beef cattle breeding competitiveness. At the same time, the cultivation of berries, raspberries in particular, becomes impossible without artificial irrigation.
Phosphorites and Glauconites as Additional Reserves in the Development of Titanium-Zirconium Sands of the Centralnoye Deposit (Tambov Region of Russia)
Authors: Georgievskiy A F , Bugina V M
Published: February 2022

After the Soviet Union demise, Russia was plagued by severe titanium resource problems. The bulk of titanium concentrates is imported from Ukraine. But Russia has its own titanium resources not lesser than in leading countries of the world (China, Brazil, South Africa). Ores form both primary and alluvial deposits, including those located in economically developed regions. The better example is the ancient marine placer of the Centralnoye deposit in the Rasskazovsky district of the Tambov region. In addition to ilmenite, rutile and zircon, ore sands also include phosphates and glauconite. The deposit was discovered in the middle of the last century and, after geological prospecting, was classified as one of the ten largest world objects of placer titanium ores. Despite this, for many years the Centralnoye deposit remained abandoned, since by that time, in the Soviet Union in Ukraine, several mining plants were already operating, which satisfied the industry’s demand for titanium. Today Russia is in dire need of titanium raw materials and the question of the need to develop the deposit has been repeatedly raised. This topic is being discussed especially actively today since a decision has been made on the expediency of its development. However, in the modern market environment, the implementation of this decision is an extremely difficult task. Here, the factors that can reduce operating costs that can improve the economic performance of mining and processing of ore sands become important. These factors include mining and use of both phosphorites and glauconites contained in titanium-zirconium ores and in the “overburden” rocks. The article describes the technogenic waste (tailings) of titanium - zirconium ores. Their material, mineral and granulometric composition is considered, and the technological properties of phosphorites and glauconites are described in the article. On the basis of experimental data, it has been shown that the accumulated concentrates represent high-quality raw materials for the production of phosphate rock and effective phosphorus and potassium ameliorants.
Mineralogy and Geochemistry of Metal-Bearing Formations Associated with the Sikhote-Alin Ultrabasites (Primorye)
Authors: Molchanov V P
Published: February 2022

A new promising type of multimetal ores and placers, spatially and genetically associated with the intrusion of the ultrabasites of the Sikhote-Alin orogenic belt has been discovered. The features of mineralogy and geochemistry of ore-placer occurrences of gold-ilmenite and gold-antimonite ores belonging to the Ariadnoye massif of ultrabasic rocks have been studied. The composition of the major industrial (economic) minerals has been revealed, the complex of associated high-technology metals being determined. The obtained data confirm the participation of these ore bodies (motherlodes) in the formation of the placers. The occurrences of titanium mineralization were the suppliers of ilmenite, platinum, copper and mercury gold, as well as of associated strategic metals. The antimonite-quartz veins were another power supply source for the placers.
Improving the Efficiency of Forestry Measures for Carbon Storage by Reclamation and Phytomelioration of Lands Technogenically Contaminated with Toxic Tailing Wastes
Authors: Krupskaya L T , Golubev D A , Kolobanov K A , Yu Filatova M
Published: February 2022

The article presents the results of multi-year research on technogenic pollution of biosphere components with wastes of cassiterite-sulfide formation processing. The areas of mainly Far Eastern taiga and Priamurye-Primorye coniferous-broad-leaved forest in the Far Eastern Federal District (FEFD) of Russia have been withdrawn from the forest land fund for their development. As a result, large amounts of mining waste have been accumulated, with negative impact on forest ecosystems. In this regard, the aim of the study was to substantiate forestry measures for improving their efficiency by reclamation and phytomelioration of technogenically contaminated lands with toxic mineral processing waste to accumulate carbon stock. The analysis and systematization of the literature and patent search materials testify that the article is devoted to the actual problem of carbon stock accumulation within the impact boundaries of the technogenic system by reclamation and phytomelioration. These problemsr in the conditions of mining enterprises of the Far Eastern Federal District of Russia are poorly studied. It is shown that the mineral development by the mining enterprises closed in the last century led to the large-scale destruction of forest communities. Methods of reproduction of productivity of technogenic polluted lands using bioremediation which novelty was confirmed by Patents of the Russian Federation are developed. By means of their reclamation and phytomelioration an increase in forestry measures and accumulation of carbon stocks in the reclaimed lands was achieved by more than 2.5 times in comparison with the nonreclaimed lands.
Development of Methodic Approach to Selection a System for Yards and Spaces between Constructions Landscaping
Authors: Lysova E , Paramonova O , Yudina N
Published: February 2022

Formation of a modern comfortable environment in Russian cities has become one of the priority tasks of the state scale. Development of fundamentally new approaches to the organization of integrated landscaping of courtyards and inter-building spaces according to the principles of comfort and bio-positivity will improve the quality of life of the country’s urban population. However, there are a number of organizational and informational problems associated with the interaction of territorial bodies of state and municipal administration, the interests of the population and organizations performing these types of work. The paper proposes a methodology for choosing elements of the improvement of the territory of courtyards and inter-building spaces both for the existing development and for newly built territories, based on taking into account the optimal ratio of the parameters of a comfortable environment, taking into account the peculiarities of the urban planning situation, utilities, the morphotype of the building, the type of yard, its configuration squares.
Analysis of Reliability of Welded Connections Liquefied Gas and Condensate Pipelines
Authors: Rafikov S K , Vatolin A P , Sharnina G S , Kozhaeva K V
Published: February 2022

To assess the strength and reliability of welded joints, the metal of welded joints of the unstable condensate pipeline was tested for static tension and low-cycle durability. The tests were carried out on defect-free specimens, specimens with defects such as lack of fusion, undercut, single pore, single slag inclusion and specimens with defects combining lack of fusion and undercut. A comparative analysis of the effect of defects combining lack of penetration and undercut and separately located defects such as lack of penetration, undercut, single pore, single slag inclusion on tensile strength and low-cycle durability of welded joints is carried out.
Estimation of Dynamic Characteristics of Vibration Protection Systems of a New Type for Water Transport Vessels
Authors: Fomichev P A , Fomicheva E V
Published: February 2022

The use of traditional means of vibration isolation of ship power plants does not always give the desired effect, which predetermines the need to search for and use fundamentally new devices to improve the efficiency of vibration isolation of a ship engine. This can be achieved by installing active-passive vibration isolators in the elastic mounts of the engine, such as electromagnetic hydraulic vibration isolators (EHVO) for auxiliary engines and other marine equipment. Despite the seeming simplicity of the design and principle of operation, the calculation of EHVO is a rather complex problem, the solution of which is associated with a number of difficulties due to the specific features of electromagnetic devices, since their calculation is associated with a large number of factors and limitations. The known functions of time obtained by solving the equations were used to calculate the dynamic parameters of the EHVO: vibration energy, periodicity, overheating of the coils and efficiency
Innovation Development of Mining Enterprises in the Arctic Territory of Canada
Authors: Tsukerman V A , Kozlov A A
Published: February 2022

The work considers the experience of innovation development of mining enterprises in the Arctic territory of Canada. For the innovation development of mining enterprises in the Arctic territory of Canada appropriate support mechanisms were created. The government of the country created a specialized organization, the Canadian Northern Economic Development Agency, acting as the main coordinator and investor of the innovation development of Arctic mining enterprises. The Yukon University which offers training of professional personnel and the development of innovation technologies and projects for mining enterprises was established. Specialized service companies are involved to improve the level of technical and technological development of mining enterprises. Mining enterprises interact with indigenous peoples through long-term agreements aimed at increasing their socio-economic well-being and creating new highly paid jobs. Taking into account the similar climatic and demographic conditions the experience of the Arctic territory of Canada is recommended to be used to increase the innovation activity of mining enterprises in the Arctic zone of the Russian Federation.
Motion Control Model and HUV Dynamics for Patrolling Sea Areas with Complex Bottom Topography
Authors: Kiselev L V , Kostenko V V , Medvedev A V
Published: February 2022

The Patrolling sea areas is one of the main tasks of the HUV when performing both typical search and survey works and a number of special-purpose works when servicing marine infrastructures [1]. The task of patrolling includes a purposeful choice of the route of the HUV with the search and examination of objects (targets), which implies the use of effective control under conditions of uncertainty in the environment and a correct dynamic model of movement, taking into account possible errors in the initial data. Particularly difficult is the task of realizing the spatial movement of the HUV near the bottom with a variable relief and the presence of significant obstacles along the route of movement. In the general case, it is required to provide equidistant movement relative to the bottom with safe overcoming of obstacles and minimization of traffic costs [2]. The solution to the problem depends on the effectiveness of the executive bodies (propulsion and steering complex) and obstacle detection equipment (echolocation systems for forward and downward vision). The control algorithm is based on multi-channel rangefinder information to obstacles and the angular orientation of the AUV relative to the bottom topography profile. The structural and hydrodynamic characteristics of the hybrid vehicle obtained in [3] are used in the model of the dynamics of the HUV. The report presents the results of research on the issues under consideration based on modeling dynamic processes using software tools Simulink Matlab, StateFlow Simulink and available experimental data.
Deer Pasture Productivity and Crop Yield in Anabarsky Ulus of the Republic of Sakha (Yakutia)
Authors: Ustinova V V , Rumyantseva T D
Published: February 2022

This article presents the results of the research into the crop yield and productivity of deer pastures in the Republic of Sakha (Yakutia). Currently, the policies aim to preserve and increase the headcount of local breeds of domesticated reindeer. Due to this, we researched the food resources of deer pastures in Anabarsky Ulus. Laboratory research and livestock analysis of the food resources of deer pastures were carried out at the clinical diagnostic research laboratory of the Arctic State Agrotechnological University. The analysis of soil was carried out at the laboratory of the Agricultural Service State Budget Company under the auspices of the Ministry of Agriculture of the Republic of Sakha (Yakutia). The authors prove that the crop yield of natural deer pastures reaches up to 41.3 dt/ha at the total power of 38.4 GJ/ha, 2891 fodder units, and 198 kg of raw protein. Day-long deer pasturing plays an important role in preserving pastures. This system stipulates that the herdsmen actively control the herd and change the pastures daily depending on the deer’s need in grazing and having rest and taking into account the weather conditions, as well as the availability and quality of fodder.
Calculation of the Optimal Gas Flow Rate Under Conditions of Sand Plug Formation
Authors: Nasyrova A I , Levitina E E , Mamchistova E I
Published: February 2022

The development and operation of gas and gas condensate fields in Western Siberia is associated with a number of serious problems associated with the aging of the fields. One of these problems is the formation of sand plugs at the bottom of the well, which leads to a halt in production and the need for repairs. To solve this problem, it is necessary to correctly calculate the optimal well flow rate, taking into account the filtration resistance and pressure losses along the wellbore. The construction of an adequate mathematical model of fluid filtration in the conditions of sand plug formation will make it possible to correctly regulate the flow rate of the well and avoid complications in its operation.
Object Detection in Images Using Deep Neural Networks for Agricultural Machinery
Authors: Andreyanov N V , Sytnik A S , Shleymovich M P
Published: February 2022

The article deals with the creation of intelligent tractor driver support systems based on computer vision technologies for analyzing the direction of movement and detecting obstacles when performing specified operations, such as plowing, harrowing, weeding, and fertilizing. Electric power poles, trees, rocks, bird nests, animals, people, and field roads are identified as obstacles. The solution of functional problems in the system is based on the extraction of information from images using methods for detecting and recognizing objects in images. The analysis of existing approaches to solving the problems under consideration is carried out and it is shown that the use of deep neural networks is effective. The practical use of the methods based on the chosen approach is based on the performance of the computing system, the availability of sufficient training data and the optimality of the training method. It is shown that these factors are important when implementing an intelligent tractor driver support system.
Analyzing Efficiency of Using a Set of Metering Equipment to Solve Heading Problems
Authors: Oskin D A , Gromasheva O S , Gorhkov A A
Published: February 2022

The purpose of this research work is to conduct experimental research on the accuracy of three types of compass systems: UKPM-M magnetic compass, SSC200 hardbody digital compass, and PGM-C-009 gyrocompass. The study was carried out in Amur Bay. The heading was measured when the study vessel was controlled by the automatic steering device and manually, under no waves, seaways, and free driving. The data obtained were analyzed using spectral analysis. Based on the accuracy measurements, we considered the possibility of using the most accurate data about the heading as the input for the automated vessel steering system.
Digitalization in Agriculture
Authors: Lovkova E S , Kashitsina T N , Sultanova A V , Yu Simonov S
Published: February 2022

The article discusses the conditions for the introduction of digital technologies This study is aimed at studying the importance of digitalization for ensuring the competitiveness of the agro-industrial complex of the Russian Federation. The article deals with the theoretical and applied issues of innovative development of the sector. The stages of digitalization implementation in the agro-industrial complex of Russia are analyzed. Methods of modernization of traditional agricultural systems are revealed. General recommendations for the development of digitalization in the agro-industrial complex have been developed.
Numerical Simulation of Production Localization Problem with Risks of Technological Disaster
Authors: Soboleva O V , Brizitskaya A V , Dyachenko Yu K
Published: February 2022

This article develops numerical algorithms for solving inverse problems of recovering diffusion coefficient from additional information about the solution of reaction-diffusion equation. The results of computational experiments are presented and discussed. Their contribution to the methods of mathematical modeling of technological disasters and the solution of problems of peoples safety ensuring in case of living near potentially dangerous objects is estimated.
Application of Information-Computing Technologies for Modeling in Soil science and Ecology
Authors: Chelovechkova A V , Komissarova I V , Mirosnichenko N V
Published: February 2022

Information-computing technologies are becoming a necessary tool in solving various kinds of problems related to research in the field of agriculture. Modern methodology also does not ignore soil science and ecology. Unified databases are being created on the most important physicochemical parameters characterizing soils. This leads to the emergence of more and more promising means of computing technologies. In particular, software systems that would make it possible not only to make long-term forecasts, but also to simulate various kinds of processes. As a result, there is a gradual transition to artificial intelligence. At the same time, very broad tasks are set before him. One of them is the enhancement of human capabilities. But at the same time, one should not forget that artificial intelligence can work effectively only if tasks are prescribed for it to be performed. He is able to study, analyze, collate a huge amount of data and use the knowledge gained to properly organize the environment.
Regional Activity in Agriculture Digitalization
Authors: Marinchenko T E
Published: February 2022

The digitalization of production in agriculture is a global trend. The national priorities of modern Russia to be determined by the program documents of the country’s socio-economic development for the period up to 2030 imply the use of the wide possibilities of digital technologies to ensure the entry of the Russian Federation into the largest economies in the world. A departmental project is being implemented within the framework of the Digital Economy national project. Digitalization is identified as an important factor in strategic competitive advantage in the medium term, which is difficult to implement without government support. The regions have been identified that are leaders in the field of digitalization of agricultural production and pay great attention to this process. The experience of these regions can provide investments in the development of other regions, as well as ensure the development and modernization of agricultural enterprises. Therefore, information on successful practices in the application of information technologies should be popularized for wider dissemination among farmers.
Hydraulic Structures that Contribute to the Sediments Directed Transfer and the Mass Transfer Activation
Authors: Antonenkov D A , Shchodro A E
Published: February 2022

The article discusses the basic concepts of the currents ordering in the sea near-shore zone when substantial water flows come from the rivers that feed them. Some preliminary calculation schemes are considered to determine the main fundamental parameters of the systems of artificial structures that organize the flow in the seashore in order to ensure the best environmental conditions.