bluuebunny/crossref_metadata_2025 huggingface dataset:
The current ecological status of snow and ice on the west coast of Lake Baikal (on the example of the Goloustnoye settlements)
Authors: Yanchuk M S , Vorobyova I B , Vlasova N V
Published: January 2021

During the winter period from 2015 to 2019, in the third decade of February and the first decade of March, snow and ice samples were taken from the area of the Goloustnoye municipal settlements located on the west coast of Lake Baikal, as well as from the adjacent water area of the lake (at a distance not exceeding 1000 m from the coast) and the Goloustnaya River. The sampling was carried out to give a modern ecological assessment of the state of the considered natural components and determine the relationship between the presence of pollutants and the level of human impact. Based on the data obtained, we constructed a map of the distribution of suspended solids, sulfates and heavy metals, such as manganese, copper, zinc, and lead, in the study area. The highest content of pollutants was determined in the samples of snow taken near settlements: the village of Bolshoye Goloustnoye and the village of Maloye Goloustnoye. Additionally, increased concentrations of suspended solids, sulfates, nitrites, ammonium, and manganese were found in the coastal area of Lake Baikal. At the same sampling sites, the pH values of meltwater corresponded to alkaline waters, which indicates anthropogenic pollution.
Landscape structure of the Iya river basin
Authors: Tsygankova M V
Published: January 2021

The article deals the landscape structure of the Iya river basin (left tributary of the Oka river). Landscape analysis was conducted in order to identify landscape-hydrological conditions of flood formation in 2019. Since the available small-scale landscape maps for the study area did not meet the requirement of the scientific issue in detail, a landscape map was compiled at a scale of 1: 500 000. The territory is heterogeneous in its physical and geographical conditions and topographic and humidification features, which resulted in formation of different landscapes and different types of intralandscape differentiation. We used a standard set of data to create the landscape map of the Iya river basin at a scale of 1: 500 000: electronic multi-scale topographic maps, Landsat 7 and 8 satellite images, digital terrain model, slope steepness and exposure maps, small-scale landscape, geobotanical and soil maps. We based on the landscape classification, which was developed for the map “Landscapes of the South of Eastern Siberia”. The landscape diversity of the basin is represented by 39 groups of facies, united in 17 geoms and 4 classes of geoms. The landscapes of the mountainous, foothill-plain and upland-plain parts of the Iya River basin are substantially different in their appearance, characteristics of individual components, and their nature. The area of landscape units increases from southwest to northeast as the absolute height and vertical dissection of the relief decrease, their diversity increases towards the foothill part of the Iya river basin.
Significance of the China-Mongolia-Russia economic corridor for the Irkutsk Region and Mongolia
Authors: Fartyshev A N , Davaanyam S
Published: January 2021

The paper considers the issue of implementing the Silk Road Economic Belt and especially the China-Mongolia-Russia transport corridor and its influence on the development of the Irkutsk Region and Mongolia as intracontinental peripheries. According to customs statistics, the Irkutsk Region mostly exports aluminum to the well-developed countries of the West and mineral fuel, timber, and cellulose to the East (China, Japan, and South Korea), and after increasing the throughput of railways, it will strengthen its export-resource dependence subject to the current trends. Mongolia has the same problems because the Mongolian economy has limited diversification and is strongly dependent on the extracting industry. Routes of the China-Mongolia-Russia economic belt fit the objects of the promising project “New Angarstroy” that makes the Irkutsk Region a full-fledged member of this concept. The convergence of the commodity markets of Siberia and Mongolia resulted from the shortened economic distance makes it possible to develop efficient end-use production facilities up to the creation of cross-border Russian-Mongolian territorial production complexes. On the other hand, distances are not so critical circumstances for building an innovative economy. However, the main problems of regional development within the framework of the initiative lie in the institutional and political field, i.e. the mechanisms of financing suggested in the concept of the Silk Road Economic Belt are not efficiently used in the territories of Siberia and Mongolia.
The Baikal region: economic specialization
Authors: Ippolitova N A , Rogovskaya N V
Published: January 2021

The article presents the economic specialization of the Baikal region, which includes three constituent entities of the Russian Federation: Irkutsk oblast, the Republic of Buryatia and Zabaikalskii krai, which are united by the basin of Lake Baikal-a world natural heritage site. The problem of examining economic specialization is currently very relevant, which is explained by the need to increase the level of socio-economic development of the country and its individual territories, the efficiency of production and regional specialization. We analyzed the economic complex of the Baikal region, revealed its determining factors and the branches of industrial and agricultural specialization. Peculiarities of economic and geographical location, natural resource potential and natural and climatic conditions define the development of the economic complex of the Baikal region. All these factors determined the economy orientation to the development of extractive industries and industries related to their service. In recent years, this trend is reinforced. Agriculture in the Baikal region develops in extreme natural conditions: reduced biological activity, a significant part of which is characterized by low indicators of efficiency and production intensity. Agriculture in the Baikal region includes two main industries-animal husbandry and crop production, their shares in the gross agricultural output of Irkutsk oblast are approximately equal; but in Zabaikalskii krai and the Republic of Buryatia, the leading agricultural industry is animal husbandry and its share is over 70%. The cultivation of grain and vegetable crops also plays a significant role in creating a local food facility.
Organization of digital monitoring of the Baikal natural territory
Authors: Bychkov I V , Ruzhnikov G M , Fedorov R K , Khmelnov A E , Popova A K
Published: January 2021

The Baikal Natural Territory includes Lake Baikal, its water protection zone, the basin within the territory of the Russian Federation, adjacent specially protected natural areas, and also the territory adjacent to the lake up to 200 kilometers wide to the west and northwest of it. The development of decisions to solve environmental problems of Baikal Natural Territory should be based on a comprehensive analysis of the monitoring data. The monitoring data and analysis methods are distributed among participants (organizations and departments). But data and analysis methods exchange is very low. An approach is proposed for the introduction of digitalization in the environmental monitoring of the Baikal natural territory, based on the integrated implementation of cyber-physical systems, the digital method of data transmission, as well as the use of digital ecosystems and platforms using the service-oriented paradigm, OGC standards, end-to-end and WEB technologies, cloud and distributed computing, large amounts of spatio-temporal data. Based on service-oriented paradigm digital resources and processing services implementing REST or WPS standard should be created by the monitoring participants. Requirements for digital resources have been defined. Infrastructure components have been developed to simplify development of digital resources, processing services and to organize interaction among participants.
Student initiatives and personal self-realization in professional geographic education
Authors: Rogovskaya N V , Ippolitova N A
Published: January 2021

The article deals with a topic of personal self-realization on the basis of student initiatives, which are implemented in the system of higher professional geographic education. The relevance of the research is dictated by the modern requirements of society for the upbringing of a harmoniously developed human personality, capable of loving, preserving and increasing the natural and historical heritage. It is the geographical environment that becomes the basis for self-expression and self-realization of a person, regardless of gender and race. The article examines the historical continuity of geographical culture distribution among the younger generation based on the interaction of educational organizations with social scientific organizations from the beginning of the 20th century to the current state of higher geographical education. The author submits that support for student initiatives and active involvement of students in a wide range of university activities contribute to the creation of an optimal social and educational environment aimed at creative self-development and self-realization of students’ personality and determine the goal and objectives of extracurricular work in the system of higher professional geographical education. The materials of the article contain generalization of the results of multi-year experience of various types of extracurricular work with youth groups (over twenty years) at the Pedagogical Institute of Irkutsk State University.
Compensatory transplantation (Rhododendron aureum Georgi) as an element of conservation (restoration) of ecosystems of the north
Authors: Pomazkova N V , Zhelibo T V
Published: January 2021

The article describes the results of the research on transplantation of Rhododendron aureum. This species is listed in the red book of the Transbaikal territory, it is wide-spread at the construction site of Udokan Mining and Processing Complex. Since 2018, Baikal Mining company has been constructing the largest complex for mining and production of copper ore in Russia. Rhododendron aureum an evergreen shrub – was found at the construction site. As the result of the mining and processing complex construction and operation, some communities including Rhododendron aureum Georgi will be disturbed. This species is difficult to introduce into the culture, grows slowly. It starts blooming and fruiting only on 12th year. As compensatory measures for the protection of the species, researchers proposed transplanting this species. As a result of research, the possibilities and limitations of carrying out activities for transplanting and rehabilitation of this species were established, sites for extraction and planting were proposed, and a technology for preparing sites was developed. Sites for mining and transplanting were chosen as similar as possible in terms of conditions: the nature of the terrain, exposure and steepness of the slopes, and moisture conditions were taken into account. In August 2019, 320 specimens of the Rhododendron aureum were transplanted to a specially prepared site. The first results showed good acclimation at compliance with the requirements for transplantation and preparation of the area. This experience can be used for rehabilitation works mountain subalpine ecosystem.
Analysis of Tectonic Stress Characteristics of the Bainiuchang Silver-Lead Polymetallic Mining Area, Yunnan Province, SW China
Authors: Long Jian , Yan Dao
Published: January 2021

The southeastern of Yunnan metallogenic belt is an area with many large- super large deposits in the Metallogenic Province of South in China. The mineral deposits in the area are densely distributed and the geological structure is complex. This article studies the joints (cracks) of the super large bed in the Bainiu factory in this area, a total of 21 joint observation points, 685 groups of occurrence structural surfaces were observed, and uses Dips software to analyze the joints (fissures) in the mining area. It is concluded that there are three periods of tectonic stress in the mining area, which are closely related to the mineralization, there are North North West-South South East, North East-South West, and South-North.
Industrial Internet Development Strategies and Innovative Practices for Large Energy Corporation
Authors: Ma Xian , Chen Rongmin
Published: January 2021

One major difference between the Industrial Internet and the traditional concept of the Internet of Things is that the Internet of Things advancement route emphasizes "network-centric" communication connections between things, while "things" themselves do not have intelligent features. The Industrial Internet and platforms are built on smart machines, with the ability to interact, anticipate and react quickly from the beginning as terminals, so that networked connections and systems between smart machines can create greater value. This paper focuses on the major strategic issue of industrial Internet construction of large energy enterprises, and proposes strategic thinking to adapt to the new normal of energy enterprise development and promote the overall transformation and development of enterprises. The practical path of digital transformation and development of large energy enterprises is discussed with the example of large energy groups implementing digital development strategies, with a view to providing theoretical reference and practical guidance for the construction of digital transformation and upgrading systems in the energy industry.
Fault Diagnosis of Fan Bearing Based on Improved Convolution Neural Network
Authors: Ma Boyang
Published: January 2021

Because of its accuracy, Convolutional Neural Network (CNN) has become an important method in the field of fault diagnosis. However, the traditional CNN has a long time of training and diagnosis due to its complex structure. At the same time, due to many problems in the network, the detection accuracy is not high. Therefore, this paper proposes an improved CNN for fan bearing fault diagnosis, which speeds up the feature extraction of the network by improving the network structure; solves the problem of part of neurons not being activated by improving the activation function, and improves the accuracy of network detection. Finally, the network proposed in this paper is validated on the data set and compared with other advanced fault diagnosis algorithms. The results show that the accuracy of the algorithm proposed in this paper can reach 99.76%. Because of other algorithms, and the training and diagnosis time is relatively short, it has practical application value.t).
Research on the Development Potential Evaluation of Urban Energy Internet
Authors: Qiu Fengkai , Wang Yaohua , Zhao Jiaxin , Wu Shengyu , Zeng Ming
Published: January 2021

With the depletion of fossil energy and the enhancement of environmental awareness, how to develop distributed resources orderly and reasonably has become a hot issue in the construction of new generation power system. Combined with the high-speed development of Internet communication technology and information processing technology, the construction of urban energy Internet in urban areas has become one of the most important construction contents of new generation power system in the future. This paper mainly evaluates the development potentials of urban energy Internet in urban areas, and establishes the evaluation index of the development potentials of urban energy Internet. Moreover, as an example, the development potentials of urban energy Internet in Suzhou, Guangzhou, Ningbo and Qingdao are evaluated.
The Intervention Model of Total Final Energy Consumption in China
Authors: Guo Mingyue , Xiao Zhihong
Published: January 2021

In the present paper, we establish an intervention model in the time series analysis method according to the total final energy consumption of china collected from 1965 to 2018, and then we make a prediction of future total final energy consumption of China. Based on the prediction we can put forward some suggestions to the planning and development for the total final energy consumption of China.
Evaluation of The Effect of Market Mechanism to Promote the Renewable Energy Consumption
Authors: Zhang Jiaqi , Zhang Tao
Published: January 2021

With the rapid development of renewable energy, there is a shortage of renewable energy consumption, resulting in serious waste of resources. Relying solely on technological improvement can no longer meet the large-scale consumption demand of renewable energy, and market-based measures are needed to further promote the consumption of renewable energy. Nowadays, China has established multiple market mechanisms. In order to measure the market mechanism's contribution to the renewable energy consumption effectively and guide the adjustment of the market mechanism, a comprehensive evaluation system needs to be constructed. Therefore, this paper first determines each evaluation index of the evaluation system from the three aspects of power generation side, power grid side and social side, and then proposes the concept of influence degree, which is used to form the evaluation index value. Then the evaluation is established based on the improved entropy method and ideal solution. Finally, taking the measures of developing auxiliary power service market in Fujian Province and other regions as an example to evaluate its impact on the renewable energy consumption, which proves that the method used in this paper has application value in evaluating the effect of the operation mechanism of the power market.
An Adaptive Method for Recognition of Dual-pointer Mechanical Instrument Based on Hough Transform
Authors: Ma Tong , Li Tiantai , Zhang Ming , Zhang Chuan , Shi Kexin
Published: January 2021

For automatic and efficient reading of dual-pointer mechanical instruments in petroleum engineering applications, an adaptive recognition method based on Hough transform is proposed. Firstly, the instrument dial is detected by Hough transform. Then the center of circle is located, as well as the pointer is recognized. Finally, the linear relationship between the dial scale and the pointer is adopted to calculate the pointer reading. The experimental results show that the algorithm achieves high application value for the dual-pointer mechanical instrument with uniform scales.
Analysis of challenges and opportunities in the development of new energy vehicle battery industry from the perspective of patents
Authors: Tan Xiumei , Li Tianyu
Published: January 2021

Thanks to China's "three verticals and three horizontals" strategy and the important deployment of new energy policies, the new energy vehicle industry has developed rapidly. The rapid development has also led to some problems. From a macro point of use, patent is an important index to reflect the technological innovation of the industry, which can provide reference for the long-term development of the industry. From the microcosmic point of office, patent is the embodiment of the strength of research and development and core competitiveness of an enterprise, and is the weather vane of its innovation layout. Therefore, this paper will use patent analysis method, collect domestic 2002-2019 new energy vehicle patent data, analyze the current situation of china's new energy vehicle industry technology innovation from China's new energy vehicle patent application number, patent application trend, patent technology features, patent application geographical distribution, patent application body and other dimensions, comprehend the automotive industry in the face of new challenges and opportunities in the process of new energy vehicle transformation, and provide some ideas for the development of China's new energy vehicle industry on the basis of analysis of relevant issues.
Simulation and Experimental Verification of Sweep Frequency Vibration Fatigue for Motor Controller of Integrated Electric Drive System for Electric Vehicle
Authors: Xie Qi , Xiong Fei , Liu Jing , Chen Chen , Yang Yuedong , Ma Zhengwei
Published: January 2021

The motor controller of the integrated drive system for electric vehicles has the risk of sweep frequency vibration fatigue (SFVF) failure in the frequency range of 100 ∼ 440 Hz. In this paper, a finite element simulation method of SFVF for an integrated motor controller is introduced. The failure position of the motor controller component is predicted using this simulation method, which is consistent with the fracture position of the sweep frequency vibration fatigue test (SFVFT). This indicates that the simulation method is accurate. And the structural optimization suggestions are also put forward using this method. The optimized motor controller meets the requirements of SFVFT. This indicates that it is feasible to use this method during the design process of the motor controller for integrated drive system.
Design and analysis of DNC production data acquisition and monitoring system
Authors: Yi Xiaolu
Published: January 2021

The DNC production data acquisition system is designed based on TCP/IP protocol, which is responsible for monitoring the data of the single state of machine tool production and collecting production and processing information. In this paper, we analyze the design of a DNC production data collection and monitoring system. The first step is to design the framework of the entire system, then propose an implementation method to exchange client and server data and combine it with a network connection, and design a data request program for server and client. Optimized server-side data collection patterns were upgraded to ensure that clients could parse log information more efficiently.
Study on Modal Test and Analysis of Planetary Transmission Mechanism
Authors: Zhang Qiang , Li Shenlong , Zhang Yudong , Cheng Yan
Published: January 2021

The planetary transmission mechanism is the core component for realizing the maneuverability of high-speed tracked vehicles. The modal test can determine the transmission characteristics of the planetary transmission system structure, and can check whether the dynamic characteristics of the planetary transmission system meet the design requirements. It is the basis of studying the dynamic characteristics of planetary transmission mechanism. In this paper, the free mode of the planetary variable speed mechanism is tested by using the free modal test method, and the modal analysis is carried out by using the finite element method. The results show that the vibration modes of the planetary variable speed mechanism are consistent with the results of finite element simulation, and the deviation between the measured modal frequency and the simulated modal frequency is less than 2%. The modal test provides the basis for the verification of the structural dynamic model and the dynamic coupling analysis of the planetary transmission system.
Research and Design of High Sensitivity FBAR Micro-mass Sensors
Authors: Ren Jiatai , Chu Hequn , Bai Yuhui , Wang Rui , Chen Pengguang , Chen Jianming
Published: January 2021

Micro-mass sensors have important application in chemical and biological sensing. Based on the theory of thin film bulk acoustic resonator (FBAR), this paper represents four designs of different micro-mass sensor models. COMSOL Multiphysics™ software is used to simulate the FBAR sensor sensitivity, which with low-impedance acoustic layer and additional electrode frame. In the finate element simulation models, five different values of mass-loading were applied. From the experimental results, the characteristic parameters and the sensitivity of the FBAR sensors were obtained. It is known to us that the FBAR sensor’s frequency quality factor can be improved by using the electrode frame, and its sensitivity can be enhanced by using the low-impedance acoustic layer. To sum up, the above analysis shown that the best sensitivity is 1.351 × 10-12ng/μm2/Hz and the frequency quality factor is 1415, which is the FBAR sensor with a single-step electrode frame and a low-impedance acoustic layer.
Research on Application of Construction Model Based on 4D Visualization in Construction of Intelligent Substation
Authors: Ren Chunguang , Wang Yachen , Xue Kai , Zhi Shenglong , Chen Tao
Published: January 2021

At present, the existing technology has not yet realized the conversion process from the digital design model of the substation project to the construction model. This paper provides a solution to this problem. After the design model GIM is loaded into unity, the vertices and materials of the GIM model are read and loaded into the scene through the company's independent research and development of three-dimensional design software (STD-R). The model level information returned by the terminal corresponds to the loaded model one by one, thereby obtaining a model tree structure. The research results of the thesis provide convenience for the design and construction of power grid substation projects.
Research and Analysis on coordination degree of nonlinear identification entropy coupling model based on regional economy, social environment and sports industry
Authors: Yang Chunhua , Zhang Wanjun , Zhang Feng , Gou Xiaoping , Zhang Yunli , Guo Qiurong , Li Bingze
Published: January 2021

In view of the coordinated development of regional economy, social environment and sports industry, this paper constructs a research index system of coordination degree, and puts forward a nonlinear identification entropy coupling of regional economy, social environment and sports industry. It takes Chongqing, Sichuan, Guizhou, Yunnan and Xizang as examples to analyze. A nonlinear identification entropy coupling model of regional economy, social environment and sports industry is established. Finally, through MATLAB simulation analysis, the results show that the nonlinear identification entropy coupling model identification method is suitable for the coordinated development of regional economy, social environment and sports industry. The simulation results verify the feasibility and effectiveness of GMM model identification method based on sports economic growth, and provide reference for the stable development of sports economy.
Simulation Research on Distribution Characteristics of Electromagnetic Field of AC UHV Transmission Line
Authors: Chen Shiyu , Guo Yuenan , Lan Sen , Zhang Kexin , Tan Long , Zhang Dewen
Published: January 2021

With the development of UHV and long-distance power transmission technology in my country's power grid, the electromagnetic environment of 100kV UHV transmission lines will be one of the key issues affecting the feasibility of UHV transmission. The impact of low-frequency noise from UHV AC transmission lines on the lives of residents along the corridor should not be ignored. In particular, pure AC sound attenuates slowly along the line and spreads far away, which often has more serious impacts on the lives of nearby residents. In order to study the distribution law and influence degree of pure sound, this article mainly conducts a more in-depth study on the wiring method of UHV transmission lines through theoretical calculation and computer simulation.
Wave Soldering Coupled Thermal-mechanical Simulation of Multi-layer Ceramic Capacitors
Authors: Su Wei , Luo Wenhao , Li Junkui , Liu Renhuai
Published: January 2021

In this paper, the thermal-mechanical coupling finite element analysis of MLCC wave soldering with heat conduction and heat convection is calculated, and the steady-state temperature field and transient temperature field as well as the stress distribution of MLCC are obtained. Using the finite element analysis method of indirect thermal-mechanical coupling, the stress analysis is carried out with the temperature field as the boundary condition, and the thermal-structural coupling model is established. By analyzing the thermal stress of MLCC, the weak parts sensitive to thermal stress are determined, which provides a useful reference for solving the reliability problem of MLCC wave soldering.
Design of weak magnetic signal detection system for residual stress detection
Authors: Wei Yanyu , Chen Dixiang , Zhou Weihong , Liu Lihui
Published: January 2021

The residual stress detection based on eddy current method belongs to weak signal detection. Aiming at the problems of sensor output signal with many channels, large amount of data, wide frequency range and low signal-to-noise ratio, a weak magnetic signal detection system is designed and implemented with Zynq-7020 (ARM+ FPGA) as the development board and peripheral hardware circuit. Among them, FPGA controls the peripheral chip to complete the signal source excitation and 8-channel high-speed data acquisition and preprocessing, and then the data is transmitted to ARM through AXI bus. ARM extracts the signal characteristics through digital orthogonal lock-in amplification technology according to the control parameters provided by the upper computer, and feeds back the results to the upper computer. The test results show that the system has high stability and detection accuracy, and meets the overall requirements of the system.
Analysis of Failure Mechanism of Smart Meter Capacitance
Authors: Zhu Binruo , Wang Xingang , Zhang Yin , Zhu Zheng
Published: January 2021

In practical applications, smart meters will fail, and even have batch quality problems. In addition to the sampling inspection of the arrival quality of smart meters, the analysis of the failure mechanism of smart meters has become an important and long-term task. This article mainly analyzes the component capacitance commonly used in smart meters, and analyses the failure of chip multilayer ceramic dielectric capacitors from appearance observation, electrical parameter testing, metallographic slicing, and at the same time from electrolytic appearance observation, electrical parameter testing, X- RAY, SEM and EDS for failure analysis. The results of failure mechanism research not only help to improve the reliability of the domestic energy meter manufacturing level, but also can save energy meter maintenance and transformation costs, and have very important practical significance for the construction of smart grids.
Study on Protective Effect of Different Kinds of Labor Protection Products in Power Supply Enterprises
Authors: Zhu Baoyu , Sun Chengxun , Jiang Shixiong , Chen Tao , Liu Sen , Li Hongyan , Zhang Shipei
Published: January 2021

Scientific and reasonable use of labor protection equipment can not only eliminate the economic loss of accidents, but also improve the efficiency of workers, and even improve the economic benefits of power supply enterprises. The evaluation of the protective effect of labor protective articles can provide reference for the equipment of labor protective articles. In this paper, starting from personal protection, a whole set of protective effect evaluation system is established from the aspects of protective ability, abrasion resistance and tear resistance, comfort and others according to the requirements of power supply protection, and then conduct empirical analysis to discuss the different protective effects of different types of protective articles. The results showed that protective clothing C and E with the best protective effect not only had higher anti-seepage and anti-penetration ability, but also had anti-static and anti-radiation ability, the protective effect of which is 36.9% than that of the worst one. Antis-eepage and anti-penetration ability can be used as the primary selection standard of protective clothing. When selecting protective products, if the economic conditions permit, choose a higher-priced protective product, and the protection effect is better. If there are special protection needs, such as protection shoes against cold or high temperature, you can choose protective products with special protective properties according to your needs. The results obtained can be used as a reference for different post protection products.
Research on Artificial Intelligence Technology in Electrical Automation Control
Authors: Luo Qin , Liu Dongkun , Song Shize , Yang Weikai , Qiao Zhiming
Published: January 2021

During the development of electrical automation control, artificial intelligence technology has become an important development trend. The stability and practical advantages of control based on artificial intelligence technology can effectively improve the level of electrical automation control. Such as remote control, intelligent monitoring, troubleshooting, product design, etc. only need to explore the application of artificial intelligence technology in electrical automation control.
Research on the Factors Influencing the Reuse of Municipal Solid Waste
Authors: Chen Caihong
Published: January 2021

By the end of 2019, the coverage rate of residential communities in 46 cities, including municipalities directly under the Central Government, provincial capitals and cities separately listed in the state plan, has reached nearly 70%. The classification effect of household garbage is obvious, and it has become a new trend leading low-carbon life. However, it is undeniable that there are still many problems. To solve the problem, effective solutions should be adopted, such as multi-means auxiliary, increasing the intensity of administrative intervention, multi-channel publicity of the harm of non-classification of garbage, etc., so as to effectively improve the recycling of domestic garbage.
Application of big data analysis technology in environmental monitoring
Authors: Chen Yanyan , Ren Fanglei , Wang Shuhuan , Zhang Linxuan
Published: January 2021

With the development of China's social economy, industrialization and urbanization, the problem of environmental pollution is becoming more and more serious, and people pay more and more attention to the problem of environmental pollution. The traditional environmental monitoring has no way to meet the needs of the government and people, so the combination of big data and environmental monitoring is the need of the times and the inevitable trend of the development of environmental monitoring. This paper will focus on the application of big data analysis technology in atmospheric detection, analyze the significance of big data analysis technology in environmental monitoring, and promote the wide use of big data analysis technology in environmental monitoring.
Application of star point design method in enzymatic hydrolysis of paphia undulate
Authors: Chen Xin , Chen Hua , Sun Huili , Liang Xin , Xu Feng
Published: January 2021

The effects of microwave–acid hydrolysis on enzymatic hydrolysis reaction of Paphia undulata were studied, and conditions of microwave–acid hydrolysis to prepare small molecular peptides from Paphia undulate were optimized by central composite design–response surface methodology to determine the best conditions of microwave–acid hydrolysis and enzymatic hydrolysis for this species Paphia undulata. Based on experimental results, to prepare small molecular peptides from Paphia undulate by enzymatic hydrolysis with peptide yield as the effect size, the optimal microwave-acid hydrolysis conditions are a solid-to-liquid ratio of 1:3, use of 6.4 mol/L hydrochloric acid, and microwaving at a power of 480 W for 210 s. The yield of small molecular peptide was 85.67%, which was similar to the peptide yield derived from the response surface model (86.62%).
Affecting factors on the enzymatic hydrolysis of paphia undulate in Marine shellfish
Authors: Xu Feng , Chen Xin , Chen Hua , Sun Huili
Published: January 2021

In this experiment, active peptide was extracted from the common clams corrugated paphia sinensis with high yield on the basis of predecessors. Research of enzymatic hydrolysis dynamics is mainly study the enzymatic hydrolysis rate and its influencing factors, the inherent law between the protein enzymatic hydrolysis dynamics model is deduced, and eventually to the industrialized production dynamic model to guide practice, dynamic model of Marine low-temperature enzyme digestion for understanding the mechanism of action of enzymes, enzymatic hydrolysis process condition control and optimization of reactor type and so on all is of great significance.
Thoughts on flexible governance in environmental mass incidents
Authors: Su Cao
Published: January 2021

The occurrence of environmental group events often brings harm to public interests. According to the traditional thinking, many local governments deal with mass incidents simply and roughly, and lack of effective communication, consultation and persuasion, which fully exposes the loopholes in government public management. In view of environmental mass incidents, we should not only be aware of citizens' dissatisfaction with the government, but also realize that citizens' awareness of environmental rights is revived. The government can communicate and negotiate with the public through flexible governance, so as to promote the good solution of environmental mass incidents.
Research on the Distribution of Vaporized Hydrogen Peroxide Based on UDF and Experimental verification
Authors: Zhang Huimin , Zhang Xianda , Gong Deli , Hu Jiejie
Published: January 2021

In order to obtain the concentration distribution rule of vaporized hydrogen peroxide during sterilization, UDF (user-defined function) is used to describe the functional relationship of the vaporized hydrogen peroxide mass fraction at the equipment inlet, Using the software AnsysFluent, the flow field in the space is mathematically simulated to obtain the mixture flow field. The comparative analysis with the data measured from field experimental. verified the correctness of the simulation results. Studies have shown that vortices appear in the flow field near top of the room and wall surface; the concentration of vaporized hydrogen peroxide increases with the height of the space; Elevated concentration of vaporized hydrogen is found at top of the sterilization chamber, and its content is higher than the middle and bottom of the sterilization chamber. Using UDF to describe concentration of the hydrogen peroxide at the entrance of the equipment is in line with the actual working conditions and can improve the simulation accuracy.
Extraction of Crop Planting Structure in County Based on Multi-temporal Images of Sentinel-2
Authors: Li Zhengqian , Xiong Feng
Published: January 2021

Accurate land information using was the foundation of the modern agriculture. The Sential-2 images were used as data sources in this paper. Firstly, spectral curve analysis of the features in the study area was performed and non-vegetated areas were excluded by using decision tree method. Since the same texture feature in each band had a certain autocorrelation, the principal component analysis method was used to reduce the dimension. In the end, 49 features including original band, vegetated band, texture feature could be achieved, then 3 models with different input which were classified by random forest method could be set up. The result showed that the model which used original band, vegetation index and decreased dimension texture feature had the highest accuracy. The total classification accuracy and Kappa index was 91.03% and 0.81771 respectively. Therefore, some conclusions were figured out: (1) the classification method based on multiple features was helpful to improve the accuracy; (2) the time series characteristics of vegetation index could help improve the classification accuracy of non-main crops; (3) decreasing the dimension of texture feature could improve the efficiency and cartographic quality of the classification.
Synthesis and Crystal Structure of 3-Bromo-2- hydroxybenzaldehyde-2-pyridinecarboxylic acid hydrazone
Authors: Zhao Meili
Published: January 2021

A new hydrazone compound, 3-bromo-2-hydroxybenzaldehyde-2-pyridinecarboxylic acid hydrazone (1), has been synthesized with 3-bromo-2-hydroxybenzaldehyde and 2-pyridinecarboxylic acid hydrazide as raw materials in the presence of magnesium chloride hexahydrate. The result of structural analyses shows that the compound 1 belongs to monoclinic, space group P121/c1 (no. 14) with a = 15.8346(13) Â, b = 6.9597(5) Â, c = 12.1912(13) Â, β = 109.123(10)°, V = 1269.4(2) Â3, Z = 4, Dc = 1.675 mg⋅m-3, μ = 3.239 mm-1, F (000) = 640, and final R1 = 0.0538, ωR2 = 0.0896.
Sensory analysis and amino acid evaluation of enzymatic hydrolysates of Chelydraserpentina meat
Authors: Wang Ruyi , Yang Zhao , Wu Ximei , Huang Chuangcheng , Ling Yeting , Li Xiaona
Published: January 2021

TheChelydraserpentinawas raw material, the meats of its back, legs, neck and tail were hydrolyzed by alkaline protease, and the hydrolysates of four different parts of meats were obtained, which sensory score, composition and content difference of total amino acid and free amino acid in hydrolysates werestudied. The results showed that the hydrolysate ofneck meat hasthe best sensory quality, with an overall score of 90. The contents of total amino acids and essential amino acids in the hydrolysate of leg meat were the highest, which were 28254.6 μg/g and 11031.7 μg/g respectively. The total amount of free amino acids in neck meat hydrolysate was 4559.2 μg/g. The content of glutamic acid in the free amino acids of four parts meat hydrolysate was the highest. The contents of umami amino acids, bitter amino acids and aromatic amino acids in the hydrolysate of neck meat were the highest in the four parts of meat hydrolysates, while that of sweet amino acids was the highest in the hydrolysate of back nail meat. Glutamic acid, histidine and phenylalanine are the free amino acids of TAV>1 in the leg meat.
Study on Adsorption Conditions of Corn Protein and Starch
Authors: Yan Rong , Dai Limei , Kang Hongling
Published: January 2021

This paper mainly measured the adsorption of corn protein on corn starch, studied the changes of protein adsorption under different conditions, and discussed the adsorption mechanism of corn starch and protein. The results showed that when the adsorption time was 1h, the amount of adsorbed protein was the largest. Heating will increase the adsorption capacity; In the range of pH3-9, with the increase of pH value, the adsorption amount of protein firstly increases and then decreases, and the adsorption amount is the largest when pH value is about 6. Adsorption decreases with the increase of ionic strength. The addition of acid pulp can reduce the occurrence of protein adsorption, and the amount of protein adsorption is the least when the acid pulp is added to 50%. Increasing the number of pores and pore size on the surface of starch particles can increase protein adsorption. The adsorption isotherm of corn protein used in this experiment on corn starch granules is S-type, belonging to type II adsorption isotherm.
Research on Spiral Bevel Gear Detection Based on Environmental Tooth Surface Error Correction Method
Authors: Ge Xiaolin
Published: January 2021

This paper studies the influence of the machine tool adjustment parameter error on the tooth surface error of the spiral bevel gear wheel processed by the double helix method. Based on the gear meshing principle, MATLAB software was used to establish the error tooth surface equation, and the analytical formula of the discrete point error of the tooth surface containing the machine tool adjustment parameter errors was derived. The topological map of the concave and convex tooth surface errors corresponding to the machine tool adjustment parameter errors was obtained and analyzed. The mapping relationship between machine tool adjustment parameter errors and tooth surface errors is determined, and the adjustment parameters that have a greater influence on the tooth surface errors are determined. With the help of the approximate expression of the topological diagram of the tooth surface error by the second-order surface, the influence weight of the machine tool adjustment parameter error on the tooth surface error is obtained. Based on the tooth surface error and the two-tooth surface error sensitive matrices, a tooth surface error correction model was established. The least square method of the generalized inverse matrix was used to transcend the equations to obtain the correction amount of the machine tool adjustment parameters. Finally, an example is used to verify the correction effect of the error tooth surface. The results show that the error of the tooth surface on the concave and convex sides after the correction is greatly reduced.
Opportunities and Countermeasures of regional economic development based on Internet Environment
Authors: He Jinlian
Published: January 2021

In the increasingly popular environment of the Internet, the continuous development of modern social economy has put forward higher requirements for all walks of life in China. In this process, the development of regional economy has an indispensable important value, and relevant units need to conduct in-depth research on it. This paper first analyzes its development opportunities, and then on this basis, comprehensively explores its coping strategies The exhibition concept, related elements, development mode and high-end industry development are discussed in detail.
Study on Tourism Planning of Edible Fungus Park from the Perspective of Agricultural Tourism Integration: taking Muer Town in Zhashui County as a Case
Authors: Yang Junhui , Xia Luxi
Published: January 2021

The tourism development of edible fungus park has many values, such as optimizing the industrial structure, increasing the tourism supply and promoting the comprehensive benefits. Based on the analysis of the Muer town in Zhashui County, it is proposed that the tourism planning of the edible fungus park should be based on the perspective of agricultural tourism integration to adjust the development orientation, optimize the spatial structure and function, develop the experiential tourism products and tourism commodities, build the thematic infrastructure, and highlight the core position of the regional culture in the tourism planning, which will eventually realize the agriculture and tourism development of the edible fungus park.
Research on the construction of social co-governance system of ecological environment protection
Authors: Yang Zhengfeng , Li Quanlun
Published: January 2021

Ecological environment is an important issue of people's livelihood. Good ecological environment is the fairest public product, which is related to people's livelihood, national ecological security and social sustainable development. The boundary of eco-environmental protection capacity is fuzzy, and the effect of social co- governance of eco-environmental protection needs to be improved. This study precisely defines the role of "five subjects" in eco-environmental protection, and puts forward the policy suggestions of establishing the social co-governance behavior integral system of eco-environmental protection, determining the list of clues of social co- governance of eco-environmental protection, determining the list of awards for social co-governance of eco-environmental protection, and building an information platform for social co-governance of eco-environmental protection, so as to promote social co- governance of eco-environmental protection System construction.
Feasibility Analysis and Key Issues of Using Limestone Sludge in Power Plant Desulfurization System
Authors: Hao Jian , Wei Shuzhou , Cai Xiangdong , Liu Gaojun , Jiang Long , Li Qing
Published: January 2021

Comparative analysis of limestone sludge in recycled water and desulfurization limestone is made in the chemical composition, reaction activity, crystallization properties and pH of Slurry. The results show that the limestone sludge in recycled water is possible to be used as a desulfurizer. Due to the large amount of impurities and lower reactivity of limestone sludge, the overall performance index values of limestone sludge are lower than that of desulphurization limestone. If it wants to be used as a desulfurizer, the further research on the using conditions of recycled water limestone sludge in desulfurization system and the possible impact of the reuse of desulfurization system on the stable operation of the system are needed.