bluuebunny/crossref_metadata_2025_split huggingface dataset:
Soil Nutrient Content Distribution in Gully in Loess Hilly Region
Authors: Meng Tingting , Wei Jing 
Published: June 2020

Abstract
In order to find out the distribution of soil organic matter, total nitrogen and total phosphorus contents in gully in loess hilly region and the difference between gully and slope, 29 and 58 samples were taken from gully and slope in Yuanzegou small watershed respectively. The results showed that the contents of total nitrogen, total phosphorus and organic matter in the 0-60cm soil layer ranged 0.091~0.628g/kg, 0.402~1.388g/kg, and 0.826~6.550g/kg respectively. According to the results of the second national soil census, the total nitrogen and organic matter content in the gully are at the lower level of grade 6, the total phosphorus content is at the higher level of grade 2, and the variation coefficient ranges from 21.6% to 33.4%, which is moderate. Pearson correlation analysis shows that soil total nitrogen, total phosphorus and organic matter contents are positively correlated with slope direction and elevation, negatively correlated with slope, and weakly correlated with soil moisture content, clay content and silt content, and negatively correlated with sand content. 0-20cm, the organic matter contents in the gully was higher than that slope 7.19%; 20-40cm and 40-60cm, the organic matter content in the gully was lower than that slope 4.66% and 12.67% respectively, but there was no significant difference. 0-20cm, 20-40cm, 40-60cm, the content of total nitrogen and total phosphorus in gully were higher than that slope, and the total nitrogen content was higher 24.31%, 13.04% and 8.70% respectively, with significant difference only in 0-20cm (p<0.05); The total phosphorus content was higher 15.68%, 13.56% and 15.11% respectively, with significant differences (p<0.05).
Analysis of Distribution of Mineral Resources and Status of Soil Pollution in Shaanxi Province
Authors: Luo Yuhu 
Published: June 2020

Abstract
Shaanxi Province has a variety of geological structures and abundant mineral resources. As the main driving force for regional economic development, mineral resources will inevitably cause environmental pollution in the mining process, especially the serious pollution of the mining area and surrounding soil. According to the distribution characteristics of mineral resources in Shaanxi Province, this paper makes a detailed analysis of soil pollution caused by mineral resources.
Current Situation and Development Countermeasures of Water-Saving Irrigation in Agriculture in China
Authors: Zhang Panpan 
Published: June 2020

Abstract
China is short of water resources, uneven spatial and temporal distribution, and low utilization rate of agricultural water, the development of water-saving agriculture is imperative. This paper briefly reviews the development process of water-saving agriculture in China, analyzes the problems existing in water-saving agriculture irrigation at the present stage in China from the aspects of technology, policy, fund, management, talent and concept, and puts forward the corresponding development countermeasures.
Status Analysis, Path Exploration and Policy Enlightenment of Zhejiang Province’s Manufacturing Green Technology Innovation
Authors: Ma Sheng , Zhu Mengqin , Yang Yan , Song Huaitong , Du Wei , Li Zijian 
Published: June 2020

Abstract
Manufacturing industry is an important economic force in China’s industrialization process, but the rapid and extensive development model has caused great damage to the ecological environment and has become a major shortcoming in China’s current economic transition to high-quality development. The analysis of the problems of green technology innovation in the manufacturing industry in Zhejiang province mainly includes: insufficient green innovation mechanism, insufficient maturity of green innovation organization, insufficient support for green innovation, and breakthroughs in green innovation technology. Then we select typical enterprises to explore and draw conclusions: Green innovation strategy includes forward-looking green innovation strategy and reactive green innovation strategy, which promotes green innovation behaviors such as products, technology, and equipment through value guidance and strategic guidance, and then creates and realizes corporate performance. Finally, targeted policy suggestions are given according to the empirical results.
Effect of Sophora Davidii Skeels and Pennisetum Sinese Roxb Intercropping Systems on Soil Nutrients and Evaluation of Comprehensive Fertility
Authors: Zhang Yujun , Zou Chao , Ding Leilei , Wang Puchang , Yang Fuli , Mo Zhiping , Long Zhongfu , Gao Birong , Wang Qingshi , Zhang Wen , Wei Xin , Liu Jiajia 
Published: June 2020

Abstract
In this study, field experiments were used to set three cropping patterns: Sophora davidii Skeels monocropping pattern, Pennisetum sinese Roxb monocropping pattern, S. davidii and P. sinese intercropping pattern to explore the effect of different cropping patterns on soil nutrients and fertility. The results showed that the soil moisture content under different cropping patterns in the 0-30cm soil layer was as follows: S. davidii and P. sinese intercropping>P. sinese monocropping>S. davidii monocropping, and there were significant differences between different cropping patterns in the same soil depth (P<0.05); soil pH increased gradually with the increasing depth in soil, and the difference between different cropping patterns in the same soil depth was significant (P<0.05); S. davidii and P. sinese intercropping 0-10 cm soil layer of organic matter, total nitrogen, total phosphorus, available nitrogen and available phosphorus were significantly higher than that of S. davidii and P. sinese monocropping (P<0.05); In the 0-20cm soil layer, the ammonium nitrogen in P sinese monocropping pattern was significantly higher than that in S. davidii monocropping and S. davidii and P. sinese intercropping, while in the 20-30 cm soil layer, intercropping were significantly higher than that in the monocropping (P <0.05); in the 0-30cm soil layer, S. davidii monocropping pattern was significantly higher than P. sinese monocropping and S. davidii and P. sinese intercropping (P <0.05) (except for that of the P sinese monocropping 10-20 cm). The quality of soil integrated fertility index (FQI) showed that the rank of FQI value in the 0-30 cm soil layer was as follows: S. davidii and P. sinese intercropping>S. davidii monocropping>P. sinese monocropping. These fingdings suggest that the S. davidii and P. sinese intercropping could effectively improved 0-30 cm soil comprehensive fertility.
Experimental Study on the Treatment of Organic Wastewater Containing Iron with High Efficiency Flocculant
Authors: Li Fang , Jin Jianjiang , Li Suqin 
Published: June 2020

Abstract
The treatment of industrial wastewater containing Fe3+ by the new high efficiency compound flocculant MD-816 was discussed. The effects of flocculant dosage, pH value and stirring rate on the removal of COD, ammonia nitrogen and Fe3+ were discussed. The results show that when the dosage of flocculant is 200 mg.L-1, the pH of waste-water is 5, and the stirring rate is 250r/min, the removal efficiency of Fe3+ in industrial iron containing waste-water is better, the removal rate of Fe3+ is 99.99%, the mass concentration of Fe3+ is 0.043 mg.L-1, the removal rate of COD is 76.27%, the lowest is 51.16 mg.L-1, the removal rate of ammonia nitrogen is 93.28%, the lowest is 7.92 mg.L-1. The treatment effect meets the requirements of the maximum allowable discharge mass concentration (Fe3+ ≤ 0.1mg.L-1, COD ≤ 100mg.L-1, ammonia nitrogen ≤ 10mg.L-1) in the integrated waste-water discharge standard (GB 8978-1996).
Image Acquisition Based on Handheld Portable Printer - Image Tilt Correction
Authors: He Zhao , Luan Fengkai , Huang Mange 
Published: June 2020

Abstract
At present, there are various algorithms for image tilt correction. However, there are some shortcomings and shortcomings in the current application of images acquired by handheld portable printers. The research in this paper is mainly aimed at the image acquired based on the handheld portable printer, which has the reason that the angle of the image acquisition angle is artificially manipulated or the image itself is tilted, which leads to the problem of tilting or see-through deformation. Other uncertain factors such as the light source during the shooting process result in low signal-to-noise ratio, low definition and low contrast, and the image is preprocessed first. The histogram equalization method is used to enhance the image, and the maximum inter-class variance is used to calculate the optimal threshold for binarization. The preprocessed image is subjected to image tilt correction based on projection analysis. The result proves that this method has high accuracy and adaptability to the image tilt correction of the printer.
Design of a Magnetic Negative-stiffness-damper for Vibration Isolation
Authors: Zhou Hangfei , Xie Shaorong , Sun Yi 
Published: June 2020

Abstract
This paper presents a novel low frequency vibration isolator. The isolator is mainly composed of a coil spring, two permanent magnets and a number of copper plates of different thickness. The negative stiffness provided by the two permanent magnets is offset by the positive stiffness of the spring, thus reducing the natural frequency of the system and broadening the isolating bandwidth. When the magnet moves, it creates eddy current damping on the copper plate. The movement of the permanent magnet and copper form a viscous damper. This makes up for the disadvantage that the isolator cannot dissipate the vibration energy. Principle of the novel vibration isolator is introduced. The optimum configuration of the vibration isolator was obtained by experiments.
Design of High Power EMI Filter for Anechoic Chamber
Authors: Xin Zhonghua , Zhang Xiaodong , Tao Liu , He Chen 
Published: June 2020

Abstract
This paper analyzes the filter requirements of high voltage and high power anechoic chamber and proposes a design method of high power EMI filter for anechoic chamber. The EMI filter adopts the PI type filter network structure and security mechanism. On one hand, it guarantees the shielding effectiveness of the anechoic chamber. On the other hand, it effectively reduces the leakage current of the filter and ensures the safety of the filter. The validity of the EMI filter is verified by taking the 10kV filter as the experimental object.
Study on the Ecological Environment Planning of Plant Garden Industry in Zhenjiang New District
Authors: Xiao Li 
Published: June 2020

Abstract
At present, the social ecological environment is fragile, and natural forestry environmental protection and artificial forestry environmental cultivation have become particularly important. This paper analyzes the development status of the ecological environment of the botanical garden industry in Zhenjiang New District, and proposes methods and recommendations for the ecological environment and forestry planning of the botanical garden. The purpose is to provide a basis for society to promote forestry ecological planning and construction and optimize the reuse of natural forestry ecological resources.
Experimental Study About Recovering Metal Lead By Direct Electrolysis Waste Lead Paste
Authors: Xiao Jiageng , Zhang Yusheng 
Published: June 2020

Abstract
The scraped lead paste is the major pollution In the Lead-acid battery industry, to solve this problem, how to dispose and utilize the waste lead paste is studied in this review study. Under acidic conditions, use the way of direct electrolysis to carry out Solid phase electrolysis of waste lead paste. The effects about three typical factors on electrolysis efficiency and energy consumption of electrolysis was studied, including the amount of lead paste, current density and sulfuric acid density. Through the design of orthogonal test to determine the optimum technological parameters. The technology has good economic value and environmental benefits, and it is easy to promote and apply.
Study on the Microstructural Features of the Soil Formed by the mixture of soft rock and sand
Authors: Yao Sisi 
Published: June 2020

Abstract
The scanning electron microscope was used to observe the microstructure of vermiculite soft rock, sand, and compound soil. Based on the observation results, the interaction relationship between vermiculite and sand particles was found during the formation of the compounded soil. The microscopic process reveals the sand-fixing mechanism of the composite soil, and quantitatively measures the sand-fixing effect of the composite soil. To provide a scientific reference at the micro-scale for improving the theory and technology of rapid mixing of soft rock and sand in the Mu Us Sandy Land.
Mineral Composition of Soft Rock in Mu Us Sandy Land, China
Authors: Peng Biao , Wei Yulu 
Published: June 2020

Abstract
Minerals are the main composition of soils. Soil minerals, especially secondary minerals, determine physical and chemical properties of soils. In this study, the X-ray diffraction ray experiments were carried out to study the mineral composition of eleven different color soft rocks and sands. The study found that the soft rock in Mu Us Sandy Land is mainly composed of quartz, potassium feldspar, plagioclase, calcite, montmorillonite, illite and kaolinite. The soft rock has various color types, such as yellow, grayish white, purple, grayish green. Different color soft rocks have different mineral composition. The grayish white soft rock has the lowest secondary mineral, accounting for only 5.4%; the light brown soft rock has the highest secondary mineral, up to 59%. The sands are composed of quartz, potassium feldspar, plagioclase, calcite, hornblende, montmorillonite, illite, of which the original mineral accounted for 93.5%, and the secondary mineral accounted for 6.5%.
Effect of light on soil microstructure and soil elements
Authors: Yang Chenxi , Li Juan , Shi Chendi , Zhang Haiou 
Published: June 2020

Abstract
light has certain energy, so it can change the soil microstructure and the elements in the soil when it radiates the soil. In this paper, the changes of total nitrogen and organic carbon in the soil under white light were studied. The results showed that: the light had an activation effect on the organic carbon in the soil; the light exposed the organic matter in the soil, accelerated the decomposition of organic matter, and reduced the total content of organic carbon. The results show that the infrared light has no effect on the soil structure, and the ultraviolet light can change the soil structure.
Effect of chemical modifiers on the growth of beet in saline soil
Authors: Lu Yangjie , Guo Zhen , Shi Chendi 
Published: June 2020

Abstract
The effects of different combinations of three modifiers on the growth of beet on saline soil were studied. The results showed that the combination of calcium sulfate and ammonium sulfate in the four improved combinations of saline soil promoted the growth of beet. SPAD was 120.85% higher than the control group, the chlorophyll content was more than double that of the control group. The photosynthesis was strong, which played an important role in improving the quality of beet.
Effects of Soil Organic construction on Regional Surface ET and GPP of Coal mine goaf
Authors: Gang Li , Nan Lu , Wang Na , Yang Wei 
Published: June 2020

Abstract
Based on the status of coal mine goaf restoration and the theory of organic land reorganization, we take the coal mine goaf in Yulin, northern Shaanxi as an example, and how does the development of organic soil reconstruction technology affect the surface ET and ecosystem GPP. Aiming at the problems such as soil pollution and ecological environment degradation in the mined-out area of coal mines, this study uses the integrated technology of land engineering and takes “process-mechanism-test-demonstration” as the main line to carry out targeted “differential remediation” and implement it accurately., System integration, research and development of soil organic reorganization and vegetation reconstruction technology systems in coal mine goafs, respectively, to promote cross-cutting research in areas such as land engineering, restoration ecology, ecological hydrology, etc. The research on the impact of the process on regional ET and GPP has scientific guidance significance for scientifically carrying out land reclamation in coal mined-out areas, regulating land use methods, mitigating and adapting to climate change, and improving the ecological environment.
Measurement and Evaluation of Energy-Saving and Emission-Reducing Efficiency in Beijing-Tianjin-Hebei Urban Agglomeration
Authors: Yuan Qingmin , Yin Shanshan 
Published: June 2020

Abstract
This paper used super-SBM model that considered undesired output, taking 13 cities in the Beijing-Tianjin-Hebei region as samples, and selecting panel data from 2008 to 2017 to measure the overall efficiency of energy-saving and emission-reducing in the Beijing-Tianjin-Hebei urban agglomeration. Decomposition and analysis of the comprehensive efficiency was performed through the Malmquist index model. The results showed that the overall efficiency of energy-saving and emission-reducing in the Beijing-Tianjin-Hebei urban agglomeration was generally low and fluctuating, showing the spatial pattern of the overall efficiency of energy-saving and emission-reducing has changed significantly, and the space radiation effect of high-efficiency cities was weak. TFPC fluctuated significantly, and TC was its main driving factor, PTEC and SEC jointly restricted the improvement of TEC.
Research on the Influencing Factors of China’s Resources and Environment to Urbanization Based on Computer
Authors: Wu Guanghua , Wu Peifeng 
Published: June 2020

Abstract
Based on the computer regression analysis method, this article first analyses the urbanization system, resource system, and environmental system on the premise of carefully analysing the connotation characteristics of new-type urbanization, resource and environmental carrying capacity, and response relationships. Mechanism of action. Furthermore, an index system for the response relationship of urbanization resources and environmental carrying capacity was constructed, and the urbanization level and resource and environmental carrying status of 10 provinces and cities in China were evaluated from 2000 to 2015. The characteristics of the change in the response relationship of each province and city are divided into three types: “positive response type”, “positive-negative response type” and “alternative response type”. Finally, through multiple regression analysis, explore the factors that affect the response relationship to show different evolutionary trends.
Research and Design of Writing Robot Based on Attitude Information
Authors: Yong Yan 
Published: June 2020

Abstract
With the development of artificial intelligence, autonomous learning writing robot has been a hot research topic. In this paper, the development of using cheap chip design suitable for low-end market need to write the low cost of robots, solve the traditional writing robot based on vision is higher requirements for image processing cost the problem. RBF neural network was optimized to learn and classify the pre-processed eigenvalues in the classifier, and its parallel broadcasting ability in Arduino 101 development board was used to make it learn, which improved the recognition rate and the performance of the writing robot.
Research on Unreasonable Parameter Identification Model of Overhead Line Based on k-means Clustering Algorithm
Authors: Zhang Yifei , Gong Yanfeng , Luo Jin 
Published: June 2020

Abstract
The existence of unreasonable in the planning of grid data may influence the economy and rationality of the power grid planning and so on, which may lead to unreasonable structure or potential risk in planning power grid. And it may even threaten the safe operation of the entire power system. This paper summarizes the general characteristics and methods of power grid planning, introduces the theory of data mining, and establishes an unreasonable parameter identification model for overhead transmission lines based on-means clustering algorithm. Finally, an example is given to illustrate the validity of the model and method.
Employment Analysis of University Students Majoring in Environmental Materials Based on Human Resources Information System
Authors: Li Yunyun , Li Ning , Jiang Miaoqing 
Published: June 2020

Abstract
In modern business activities, information has become one of the important resources. Whoever obtains the latest information and pays attention to the development and utilization of information resources may obtain huge economic benefits. The intensification of talent competition is both a challenge and an opportunity for colleges and universities. The human resources management department can no longer be the role of the policy executor in the traditional planned economy era, but should change into a policy advisor while understanding the superior policies. An analysis of the existing contingent of environmental materials professionals requires a powerful platform, namely, the human resources management information system. Human resource management department can no longer be the role of policy executor in the era of traditional planned economy, but should be transformed into policy proponent while understanding the superior policy. Based on the human resource information system, this paper attempts to analyze the employment of environmental materials majors in China from the perspective of human resource development, using the relevant theories of human resource development, and puts forward relevant suggestions.
Research on force characteristics of cap-pile system under earthquake action
Authors: Qin Fengyan , Yang Fulian , Ge Qingyun , Liu Hongbo 
Published: June 2020

Abstract
This paper presents a three-dimensional finite difference numerical analysis of cap-pile system under earthquake. The deformation law of the cap-pile system and the variation characteristics of the axial force and moment of the pile are obtained. Under the action of earthquake, the settlement of the cap is increasing, and finally did not retrace, while the axial force and bending moment of the pile, present the trend of increasing first and then reducing, and the withdrawal efforts are great. The force and displacement are not completely corresponding relationship under the action of the earthquake. The moment of the pile swings at 0 o’clock under earthquake.
Study on the destructive test of T-beam strengthened by external prestressing
Authors: Wu Junyan , Jiang Xiujuan , Wang Laiyong 
Published: June 2020

Abstract
Three T-beams with severe cracks in the operation were selected for the approach bridge of the Yellow River Bridge of a national highway. Three pieces of external T-beams were used for reinforcement and the destructive tests were carried out on the strengthened T-beams. The test results of the T-beam test of the approach bridge are analyzed to evaluate the bearing capacity. The main conclusions are as follows: The strengthened T-beam has greatly improved the mechanical performance, improved the cracking load of the T-beam, and slowed the crack development. The change of beam deflection is divided into three stages: 0~30t, 30~66t, 66~134t. The deflection value increases gradually, and the turning point of deflection changes basically corresponds to the crack development. The stiffness and ultimate load carrying capacity of the T-beam are greatly improved, which greatly improves the safety of the T-beam. Due to the lack of space at the bottom of the beam, the test beams of the three pieces of reinforcement were loaded to the final failure, and the maximum crack width has reached the loading termination condition. This indicates that the elastic stress stage of the T beam is increased after the reinforcement, and the T beam has a strong T-beam. Deformation recovery capability. It provides some reference for the reinforcement and transformation of similar T-beams and the evaluation of bearing capacity.