bluuebunny/crossref_metadata_2025_split huggingface dataset:
Method validation for the determination of aniline and 3,3’-dichlorobenzidine by gas chromatography-mass spectrometry
Authors: Wang Zhao , Li Risheng 
Published: May 2021

Abstract
This article uses and validates the analytical methods for the determination of aniline and 3,3’-dichlorobenzidine in soil by gas chromatography-mass spectrometry, and discusses the determination of semi volatile organic compounds in soil by gas chromatography-mass spectrometry. The feasibility of the application. The results showed that the semi volatile organic compounds aniline and 3,3’-dichlorobenzidine target corresponding to the internal standard response value and concentration showed a good linear relationship, the correlation coefficient was between 0.9997 and 0.9983 respectively; the detection limit was 0.04 mg, respectively/kg and 0.04mg/kg, the limits of quantification are 0.2mg/kg and 0.2mg/kg; the relative standard deviations of the two semi-volatile organic compounds in the precision are 2.5∼16.9% and 3.6∼6.2%, respectively; the accuracy is 2 The recovery rates of these volatile organic compounds were 64.5-83.9% and 72.6-74.3%, respectively. The verification results show that the linear relationship, detection limit, precision and accuracy all meet the requirements of “Determination of Semi-volatile Organic Compounds in Soils and Sediments by Gas Chromatography-Mass Spectrometry” (HJ 834-2017). Using gas chromatography-mass spectrometry technology can achieve fast, accurate and sensitive detection of target substances, and can meet the detection requirements of trace semi-volatile organic compounds, so this method can be better applied to the detection of soil and other environments.
Analysis and Implementation of Economic Means of Environmental Protection in China
Authors: Wang Liang 
Published: May 2021

Abstract
Since the reform and opening up, China has been adhering to the extensive economic growth model, which has led to serious environmental damage, energy depletion, global warming and environmental pollution and other environmental problems have been increasingly prominent. The root of environmental problems lies in external diseconomy. Environmental pollution has obvious negative external effects, as environmental resources are public goods, enterprises will not increase their own costs in using or consuming public goods, but the society has to bear the marginal cost in providing the goods, which will lead to the inconsistency between social cost and private cost, thus causing excessive damage to the domestic environment. In the past, our country mainly governs by administrative means, and the shortcomings such as high management cost and poor effect in the implementation process are increasingly obvious. Combined with the treatment process of environmental pollution in western countries, economic measures have a good effect on the external diseconomy of environmental problems. According to the current environmental problems and governance status in China, environmental governance means in urgent need of transformation. Based on the literature, this paper analyzes the current situation of environmental pollution in China and the mechanism of economic means in environmental protection, puts forward the means of environmental governance and protection from the economic level, and discusses the future direction of environmental governance.
The Key Factors Influencing the Decline of Carbon Emission Intensity in Low-Carbon Cities and Countermeasure Research—A Case of Fuzhou, Jiangxi
Authors: Xi Xiping , Han Fei , Xie Yunsheng , Yang Lei , Yan Heng , Luo Chenglong , Sun Liyuan 
Published: May 2021

Abstract
Carbon emission intensity is an important indicator to evaluate the urban development level. Taking Fuzhou, a low-carbon pilot city of China in Jiangxi Province as an example, based on the current levels of energy consumption and carbon emissions, this paper proposes the concept of “the marginal effect of carbon emission intensity” and analyzes the eleven factors influencing the decline of carbon emission intensity in low-carbon cities. Results show that the rise of carbon emissions in industrial sectors are the main reason for the abnormal increase in the carbon emission amount and intensity of Fuzhou, and that the coal consumption level, GDP and electricity sent out to other cities are the key factors influencing the decline of carbon emission intensity. Based on the analysis, countermeasures and suggestions are put forward as a reference for the municipal government in the construction of low-carbon cities.
Summary of Application of Solar Thermal Evaporation Technology in Wastewater Treatment
Authors: Wang Xiaohui 
Published: May 2021

Abstract
In view of the current problems of sludge drying, this article mainly proposes a sewage source heat pump + solar heat collection system sludge drying technology, and expounds the feasibility of using sewage source heat pump and solar heat collection system as the heat source for sludge drying. The main principles, the structural characteristics of the main equipment and the operation precautions. It is clarified that this sludge drying method has good expansibility and practicability, and has the value of engineering application and further development.
Penetration and Prominence of Regional Culture in Urban Landscape Design
Authors: Chen Junyu 
Published: May 2021

Abstract
Urban development should get rid of the stereotypical design and planning mistakes, so as to pursue the prominence of local characteristic culture, bring the expression of regional culture with landscape design, and make the city more characteristic and impressive. In urban landscape design, it is necessary to excavate regional cultural elements, attend to the regional culture, and truly integrate regional cultural characteristics into urban landscape design. This work mainly discussed the penetration and prominence of regional culture in urban landscape design, and reflected on the embedded ideas and strategies in urban landscape design of urban regional culture through taking Luoyang as an example, so as to create a vivid city card with urban landscape design.
Research on Urban Innovation and Entrepreneurship Base Based on Energy Saving, Emission Reduction and New Energy Development
Authors: Wei Wei 
Published: May 2021

Abstract
Innovative companies often face strong resource disadvantages, making it difficult to gain a foothold in emerging industries. Existing research still lacks an in-depth investigation of the internal mechanism of how innovative companies in emerging industries break through resource constraints, successfully develop entrepreneurial opportunities, and then build competitive advantages. Based on this, this article sets a new orientation for the training objectives of innovative and entrepreneurial professionals in the maintenance of new energy vehicles, designs a connection plan, builds an integrated curriculum system, and optimizes professional courses at different stages.
Research on the Community Group Buying Marketing Model of Fresh Agricultural Products in Jilin Province from the Perspective of Internet Marketing and Retail
Authors: Liu Lili , Zhang Fan , Li Hengyu , Wen Conggao 
Published: May 2021

Abstract
Under the “Internet +” environment, fresh food operators in Jilin Province are facing new opportunities. The new retail model has obvious advantages in the sale of fresh agricultural products. There are mainly two models of “community store + platform shopping” and “community group buying + centralized pickup.” There are still some problems in the community marketing of fresh agricultural products in Jilin Province. The business model can be improved by improving the logistics and distribution system of fresh agricultural products, promoting fresh agricultural products standards, strengthening supervision and management, actively introducing talents, broadening financing channels, and cultivating markets. Improve measures such as guiding the establishment of new consumption habits.
Design and Implementation of the Inner Mongolia Meteorological Service Intranet APP
Authors: Zhang Delong , Liu Yang , Liu Tianqi 
Published: May 2021

Abstract
The new media platform based on internet, like WeChat and other mobile phone applications (APPs), can provide meteorological information to users more conveniently and efficiently than the traditional platforms, such as TV, telephone, short message, etc. Therefore, an intranet APP is developed in Inner Mongolia Meteorological Information Center to realize the rapid acquisition of meteorological information in the 70th anniversary celebration of the Inner Mongolia Autonomous Region. Based on user experience and user demands, the APP offers multiple meteorological service products covering meteorological observations and forecasts. It quickly displays the data from the critical regional automatic stations and mobile meteorological stations for relevant users. In this way, it provides seamless, all-round, refined and targeted meteorological services throughout the celebration.
A new type of superhydrophobic membrane seawater desalination device
Authors: Huang Shudi , Li Yuqi , Li Zongjing 
Published: May 2021

Abstract
In response to the existing problems of the current seawater desalination equipment, this project designed a new type of super-hydrophobic membrane tangential distillation seawater desalination device with simple structure, low energy consumption, high seawater conversion rate, operation and reduced maintenance costs. The successful implementation of the project will not only provide economical and applicable freshwater equipment for the living water of island residents, but also have potential application value for China’s coastal defense construction and offshore development.
Cropland Extraction Using Water Mask and Phenological Features based on Landsat-8 Imagery
Authors: Xiao Wenjuan , Wang Jiasheng 
Published: May 2021

Abstract
Accurate cropland information is crucial for food security assessment. At present, Landsat-8 remote sensing imagery and Google Earth Engine (GEE) cloud platform provide favorable conditions for mapping cropland. Despite the improved mapping conditions, the existence of mixed pixels is still one of the main difficulties in the cropland extraction. Especially in paddy fields, the influence of water bodies on farmland extraction should not be ignored. Also, the lack of time series data with temporal-spatial resolution impedes the accurate cultivated land mapping. Aiming at these problems, we proposed an effective method to extract cropland precisely based on the Landsat-8 imagery and GEE platform. First, we created cloud-free images and masked out water based on Landsat-8 images. Second, we constructed the normalized difference vegetation index time series data with 30-m resolution from Landsat-8 and MODIS images to obtain accurate phenological information. Third, other cropland features such as texture features, tasseled cap transformation features, terrain features and spectral features were acquired. Finally, we applied the Random Forest algorithm and obtained the cropland for 2015 in Qinzhou. The results show that terrain characteristics and phenological characteristics have the greatest influence on cropland extraction. Based on water mask, the overall accuracy of cropland improved by 6.9%. Overall, the product has high accuracy with the mean overall accuracy (OA) of 97.9%. Compared with MCD12Q1 and GFSAD30 cropland products, it is 6.2% and 24.3% higher in OA respectively. In brief, our method is helpful for the cropland extraction.
Research on Material Workshop System under Intelligent Sorting Manufacturing in Digital Workshop
Authors: Zhang Teng 
Published: May 2021

Abstract
With the continuous development of science and technology level and management thought, the current manufacturing enterprises are also undergoing a change involving technological processes and management methods. With the rapid introduction of scientific and technological means, it is transforming from the traditional experience-based management mode to the information-based management mode, that is, the integration mode of two industries supported by informationization, pursuing sustainable development and adhering to scientific development. Digital workshop technology is one of the key technologies of digital manufacturing technology, which is an important application of digital manufacturing technology in manufacturing field, and has become the realization basis of advanced manufacturing technology in the actual manufacturing process. In this paper, an integrated management system structure of digital manufacturing workshop under networked manufacturing environment is proposed. According to the management requirements of modern digital workshop, wireless mobile communication technology is introduced, and a digital workshop intelligent sorting and manufacturing cutting workshop system is constructed.
Simulation System of Coal Mine Mechanical and Electrical Equipment Maintenance Based on Virtual Reality Technology
Authors: Meng Long 
Published: May 2021

Abstract
Aiming at the problem of cumbersome disassembly and assembly of large-scale equipment in coal mines and high cost, this article takes coal shearers, hydraulic supports, road headers and hoists as the research objects, and uses virtual reality technology to design and implement a set of virtual assembly subsystems., Virtual assembly and simulation system composed of scene simulation and roaming subsystems. The article uses Maya to model large-scale equipment, through VS programming, interactive control in Unity, and realizes the virtual assembly and maintenance of equipment and the virtual simulation roaming function of coal mining face. The test shows that the training and use of the simulation system effectively improves the actual assembly and maintenance capabilities of the equipment, while reducing the cost, and has a significant practical application effect.
The overall process of high-deck float-over for the large platform in paralic zones
Authors: Zhang Xiaochun , Yin Qingguo , Jiang Xiaobo , Yang Ling , Jin Song , Dong Yuezhou , Zhu Yan , Wang Xiaoyan 
Published: May 2021

AbstractAs the demand for oil and gas resources continues to grow, the development of oil and gas resources in paralic zones is also increasing. Because the water depth is very shallow in paralic zones, large construction equipment cannot enter the construction area, so the offshore installation of large platforms is facing a great challenge. The float-over installation method has the advantages of large lifting capacity, short operation period, and low construction cost. At the same time, it can effectively reduce the amount of dredging work and is more suitable for the offshore installation of large platforms in paralic zones. In this paper, the installation process and key technologies of hi-deck float-over for the large platform in paralic zones are emphatically introduced. The key technologies include the barge motion response analysis technology, the barge ballast adjustment technology, the positioning and buffering technology and motion monitoring technology, etc.
Fault diagnosis and analysis of compressor fracture problem
Authors: Su Jintao , Lou Jianping , Jiang Xiaolu 
Published: May 2021

Abstract
Fault diagnosis of fracture problems has always been a difficult point in fatigue analysis, and there is no good solution at present. Aiming at the nonlinear problem of fracture problems, this paper studies the pre-critical technology. According to the compressor cover local cracking problem, respectively by finite element analysis software MSC. Patran and Nastran to cover components were nonlinear analysis, through the comparison and fault diagnosis method of the fatigue damage final cover cracking reasons, the improving measures are put forward in this paper, the solution is verified the effectiveness of the improved reliability calculation..
Research on The Relationship between Residential Space Pattern and Traditional Culture based on Space Syntax: Taking Kejia House as an Example
Authors: Zou Han , Chen Chen , Xiao Wei 
Published: May 2021

Abstract
This article uses the space syntax theory to analyze the space diagram of the typical traditional houses and houses in Southeast Hubei, and discusses the characteristics of the spatial pattern of the traditional houses. Using Depthmap software to analyze the spatial pattern of traditional dwellings, and calculating data indicators of integration, connectivity, and integration of horizons. Through analyzing the characteristics of spatial pattern, it reflects the characteristics of moral concepts, clan concepts, and living habits in Southeast Hubei.
Computer Image Recognition Technology and Application Analysis
Authors: Yang Nan , Wang Zhiyi , Wang Shihao 
Published: May 2021

Abstract
In recent years, with the continuous development of science and technology, the application range of computer image processing and recognition technology, which improves image quality and plays an important role in practical application, has been gradually expanding. Based on this fact, this article first introduces computer image processing and recognition technology and analyzes its application advantages and characteristics, then analyzes and introduces its application principles and application process, and finally discusses its practical application. It can provide some help to related technicians to promote the application and innovation of computer image processing and recognition technology.
Construction Key Technology of Cast-In-Place Prestressed Box Girder for Bridge Engineering
Authors: Chen YongKang 
Published: May 2021

Abstract
Research topics: Based on the working platform of school-enterprise Cooperation Council, the exploration and research on the path of school-enterprise cultural inheritance and co-construction. Cast-in-place prestressed box girder construction in bridge engineering can reflect the continuous development of construction materials, box girder for higher strength concrete and steel composition, the construction process, the need to first raise the structure and apply the corresponding compressive stress, so as to make the structure work to withstand the tensile stress to be offset, to achieve the effective application of the tensile strength of steel, in this case, can promote the overall structural durability and stiffness to improve, so that the structure of the self-weight has been significantly reduced.
Numerical analysis of earth pressure of foundation pit adjacent to composite foundation
Authors: Guo Yuancheng , Gu Shaochuang , Lv Chenyu 
Published: May 2021

Abstract
It is necessary to consider the influence of the surcharge load of the existing building and the displacement of the retaining structure when excavating the foundation pit adjacent to the existing composite foundation. FEM analysis work were conducted with two working conditions (condition of loading and condition of translation). The distribution and diffusion mechanism of lateral earth pressure acting on the retaining structure adjacent to composite foundation was investigated. It was found that, when there is no displacement of the retaining structure, the magnitude of additional lateral earth pressure acting on retaining structure adjacent to the natural ground and the composite foundation in the shallow area is almost the same. Moreover, compared with the natural ground, the composite foundation can block the horizontal diffusion of the load, resulting in the reduction of lateral earth pressure acting on the shallow area of retaining structure adjacent to the composite foundation is larger than that of adjacent to natural ground when retaining structure translation outwards.
High-Efficiency and Energy-Saving Thermostat Combining Peltier Effect and Air Vortex Characteristics
Authors: Song Fei , Yang Chenglong , Zhou Lin 
Published: May 2021

Abstract
This project uses the Peltier effect to optimize the temperature control system of the thermostat, uses semiconductors to generate temperature differences, and then forms a heat pump, uses the conversion between high and low taste energy to replace the compressor for refrigeration and temperature adjustment, and at the same time uses the gas vortex characteristics to exchange gas and Adapt and improve the heat dissipation and other aspects. The incubator designed in this project is more excellent in terms of energy saving, low noise and service life, and improves the utilization of energy and resources. At the same time, the temperature control of the incubator has the advantages of stability and accuracy, which can effectively solve the problem of food and medical the deterioration and loss of supplies.
Load Prediction and Control of Capillary Ceiling Radiation Cooling Panel Air Conditioning System Based on BP Neural Network
Authors: Pi Gang , Xu Linghong , Ye Qiming , Hu Pingfang 
Published: May 2021

Abstract
Compared with traditional air conditioning system, capillary ceiling radiation cooling panel (CCRCP) air conditioning system has the characteristics of low energy consumption, low noise and can provide comfortable indoor thermal environment. However, there are two problems: (1) the traditional PID control has slow feedback and lag due to the non-linearity, hysteresis and many uncertain interference factors of radiation panel air conditioning system; (2) At the start-up time, the sharp drop of temperature of the capillary ceiling radiant panel surface always cause the condensation problem. The solution adopted in this paper is showed as follows: At first, CCRCP air conditioning system model is established in TRNSYS, and the BP neural network is applied to the real-time load prediction control of the model. Secondly, fresh air pre-dehumidification system is adopted in the model to ensure that the panel condensation will not occur in the start-up stage. The results show that: 1. the correlation coefficient R of BP neural network for load prediction of working day is as high as 0.97, and the MSE is only 0.00425; 2. The temperature difference between the indoor temperature that is adjusted by BP neural network load prediction and the indoor design temperature during working hours doesn’t exceed 1°C; 3. Under the most unfavorable conditions with 1 h pre-dehumidification time, when the fresh air volume of pre-dehumidification is 100m3/h, the panel condensation will be prevented in the start-up stage.
A Technology of Surface Defects for the Solar Wafer by Dual Vision
Authors: Huang Yuanmin , Yi Ming , Yang Weihang , Yang Man 
Published: May 2021

Abstract
For overcoming the defects of the existing method of surface defect for the solar wafer.A automatic measurement technology by dual vision is presented. Frist the principle and flow of the automatice measurement technology are introduced. Second the technique of camera calibration, technique of center extraction of edge and technique of automatic matching are researched. At the end, using the technology realized the rapid defects detection including crack, cavern, smudge and broken so on and so forth which can be concluded that the application of this technology helps to enhance the inspection efficiency.
Optimizing Scheduling Method for Distribution Network Considering Distributed Power Supply Flexibility
Authors: Xin Lv , Li Shunxin , Dong Shaoqiao , Zhao Min , Yang Min 
Published: May 2021

Abstract
In the construction of distribution network, low voltage distribution can ensure the stability of the whole power transmission, but it will also lead to poor operation because of the low voltage. When the operation of the operation and inspection system is unstable, the processing function of the data will decrease, and when the power problem is encountered, it will not react at the first time, so that the operation of the whole system will produce certain danger. The high permeability distributed power supply is connected to the distribution network, which exacerbates the volatility and instability of the distribution network. Therefore, it is necessary to improve the immunity of the distribution network while ensuring the function of the high permeability distributed power supply.