bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk Assessment of Sudden Water Pollution Accidents Based on the One-Dimensional Hydrodynamic Model for Weihe River Basin, China
Authors: Liu Yinge , Zhang Yonggang , Long Yan , Wang Lingang 
Published: August 2020

Abstract
The frequent water pollution incidents can lead to deterioration of water environment and increase risk of endangering people’s health. According to the characteristics of sudden water pollution accidents, a one-dimensional river-water pollution model was established in this study using hydrodynamic method. Then, taking the Weihe river basin as an example, the longest distance, size of longitudinal dissociation, and the risk range of contaminants were estimated via the model. Moreover, the changes of contaminant concentration risk in the different flow were assessed by the emergency measures of water diversion, which could achieve the purpose of improving water quality in a short time, and greatly reduce the risk of water pollution accidents. The results showed that, in the flow of 30m3.s−1 and 60m3.s−1 the maximum contaminant distance moved forward 34% and 49% than natural condition. Meanwhile, the maximum concentration was decreased by 30 to 40% and the total length section was approximately reduced by 25 to 45%. These validations have showed the method is an ideal tool for making pollution accident emergency treatment. However, the parameters of the model should be adjusted for different watersheds. This study can provide the basis for the water pollution risk decision management.
Improving the Viscosity of Polymer Solutions Prepared with Sewage through Bio-competitive Exclusion in Shengli Oilfield
Authors: Du Chun’an , Xu Peng 
Published: August 2020

Abstract
This paper summarized and analyzed the research and application of biocompetitive exclusion technique to remove sulfides produced in wastewater and inhibit SRB from producing new sulfides to mitigate the loss of viscosity of polymer solutions prepared with sewage water in the Shengli Oilfield. The results indicated that by adding a regulator can activate NR-SOB and RB in sewage water, which inhibit SRB activity and prevent them for producing new sulfides by competing for nutrient substrates and living space. The inhibition of SRB leads to improved polymer solution viscosity and high viscosity stability.
Optimal Design of Presplit Blasting Network of Deep Concave Open-Pit Mine Slope with Heterogeneous Complex Rock Mass
Authors: Chen Yajun , Zhao Juanjuan , Cao De 
Published: August 2020

Abstract
To ensure that the mining steps of deep concave open-pit coal mines with heterogeneous complex rock masses in arid areas are safely bounded by the design requirements and form a fixed side wall, to avoid the occurrence of instability and disaster caused by blasting vibration, based on non-homogeneous rock mass structure, lithology characteristics, fracture surface composition, morphology and joints, analysis of fissure development trend, and case studies of wedge-shaped landslide accident caused by blasting vibration, we proposed: (1) The pre-split instantaneous denotation charge is the dosage used for the segment unit charge of the primary blast hole and buffer hole, and it’s used for calculating . Based on this, the time intervals of segmented detonating cord and fuse are calculated and the actual detonating unit charge is decided. (2) Leave lateral free surface on the fixed side boundary and drill inclined blast holes along the slope of the steps, connect detonating cords to the blasting network, multi-point instantaneous detonate uncoupled segmented charge holes, use the pre-crack and fracture surface to reduce the damage caused by the explosion shock wave of the primary and buffer blasting holes. (3) The main blast hole and buffer hole are connected by non-conductive detonating cord and “four-way” blasting network, couple continuous concentrated charge using non-conductive detonating cord and fuse plus or detonator plus segmented ammonium dynamite initiator and expanded ammonium oil charge for millisecond interval detonation. Control the number of blasting holes and unit detonating charge over equal segments of fuse and detonating cord, reduce the impact of close-range blasting vibration of vertical deep holes on fixed side wall and step slope. Results of the blasting experiment show that using the technology of detonating cord in combination with non-conductive detonator’s pre-split hole millisecond differential blasting network plus reserved free face and segmented unit charge detonation, provide 1-2 blasting lateral free face or positive free face, making the blasting effect dispersed around the blasting hole. It has better solved the major safety problem of instability and disaster caused by the blasting effect on the fixed border-to-boundary steps of deep concave open-pit mine in arid region.
Study on the Mode and Strategy of Rural Land Circulation Management Based on the Background of Rural Revitalization Strategy
Authors: Zhong Wen , Zhong Changbiao , Zheng Minggui 
Published: August 2020

Abstract
Rural land circulation is of great practical significance to ease the contradiction between urban and rural land supply and demand, to realize the complementarity of urban and rural resources, economic integration, urbanization and construction, and the land circulation mode chosen to adopt is related to the efficiency of land resource utilization. At present, China has made fruitful achievements in the exploration of land circulation mode, but there are still many problems in the current agricultural land circulation mode, so we should start from the national conditions of our country and the development situation of different regions, adhere to the principle of science, and construct a reasonable model of agricultural land circulation.
Optimization Design Method Based on Energy Balance Calculations for Passive House
Authors: Chen Mengyuan , Gao Caifeng , Yu Zhen , Wang Jianghua 
Published: August 2020

Abstract
The Passive House Planning Package (PHPP) is a design tool for energy efficiency for architects and engineers. It uses a quasi-state energy consumption calculation method given by ISO 13790 to calculate the heating, cooling, primary energy demand and renewable energy production of buildings. Based on the technical requirements and energy demand goal of Passive House, this paper analyzes the energy balance calculation model of PHPP software, and developed a Matlab program to find the optimal design parameters. Validated by applying the program to typical projects, the calculation result of the program has acceptable precision, thus can be used for rapid comparison of a large number of passive energy-saving plans, to optimize the design of Passive House based on predicted energy performance.
An Evaluation on the Transformation of Energy-Based Cities in China
Authors: Zhao Fang , Meng Wei , Zhang Huan 
Published: August 2020

Abstract
This paper selects 11 typical energy-based cities in China, constructs the transformation evaluation index system of energy-based cities, and adopts the principal component analysis to conduct comprehensive evaluation on transformative capability and transformation effect of these cities. The study found that, due to the solid economic base and abundant human resource reserve, supporting capacity of industrial transformation is strong in petroleum-based cities, whose transformation effects are also fairly good. Whereas there exists great difference in transformation effects among coal-based cities, which is mainly attributed to the significant difference in development stage, economic base, resource condition and industrial transformation policy of each city. Local governments are suggested to closely combine specific conditions of their city and take following measures to further promote the smooth transformation, such as optimize and upgrade the original industrial system, strengthen support for finance and monetary, create favorable external environment for the transformation etc.
Distributions, Source and Pollution Status of Heavy Metals of Urban Soil in Xining, China
Authors: Han Li , Li Yun 
Published: August 2020

Abstract
In recent years, the topsoil has suffered from remarkable heavy metal contamination with a rapid development of urbanization and industrialization in Xining. However, there are less detailed studies on the heavy metals contamination in Xining topsoil. We collected 40 soils samples from the upper 5 cm of the soil layer and detected the concentrations of Pb, Cu, Zn, Cd, As, Sb, Cr, Ni in the soil by inductively coupled plasma-mass spectrometry (ICP-MS) and that of Hg was tested by mercury detector. Compared with Chinese other part of soil, the concentrations of heavy metals in urban soils of Xining were significantly higher, and the average values of Zn, Cd, Sb, Pb and Hg were 9.13, 72.96, 5.30, 6.13, and 8.23 times as high as their corresponding background values, respectively. On the basis of the results of the correlation coefficient analysis, principal component analysis (PCA), cluster analysis (CA), the spatial distribution pattern analysis and heavy metal ratio analysis, we discovered that Hg, As, Cu, Sb, Pb, Cd and Zn had similar patterns, and their hotspots were primarily associated with three industrial districts in Xining, especially the Ganhe Industrial District in the southwest of Xining, while Cr and Ni mainly came from the natural source (loess around Xining). Heavy metal enrichment factor (EF) further confirms the source identification and degree of contamination. Moreover, the wind direction analysis shows the southwest and northwest winds transport lots of pollutions from the industry districts to the urban zones. The results of this paper clearly highlight that all people in xining are in sore need of pulling together to control industrial emissions/site, and meanwhile remedy seriously contaminated urban soils.
Effects of Different Air distributions on the Thermal Environment in the Office
Authors: Wu Haodong , Mu Yanjuan , Wang Jianfei 
Published: August 2020

Abstract
Three kinds of air distribution, including “upper supply and top return”, “upper supply and lower return” and displacement ventilation, are researched in an office building by fluent simulation software, the effect of the air distribution to the indoor environment can be obtained by analyzing the temperature and velocity distribution. Three physical models (10X20X2.75, widthX lengthX height, unit: m) with different air distribution are established in the research, the temperature field and velocity field are obtained by simulation. The results show that it is beneficial to creating a uniform temperature field and weakening the thermal discomfort caused by draught when the “upper supply and lower return” mode is applied in the office. However, the air vents in the lower part of the room need to be kept clean, otherwise the indoor air quality will be deteriorated, therefore, the selection of air distribution will lead to differences in the initial structure and economy.
Dynamic Relation between Sustainable Development and Renewable Energy Consumption: Evidence from ECOWAS Region
Authors: Moustapha M A M , Yu Q , Danqauh B A 
Published: August 2020

Abstract
This paper studies Economic Community of West African States (ECOWAS) economic growth and renewable energy consumption (REC) dynamic relation over the period of 2002 to 2016. This study conducts an empirical analysis using Autoregressive Distributed Lag- Bounds approach (ARDL) and VECM based on Granger causality. The results show that renewable energy consumption has significant and positive impact on economic growth; also show unidirectional Granger Causality from renewable energy consumption and the percentage of electricity access to economic growth. In addition, findings indicate bidirectional Granger causality between economic growth and carbon dioxide emission. Moreover our findings indicate that REC increase by 1 per cent leads to 0.009 increases in Real GDP in long run. Therefore, REC can play an important role to ensure sustainable development in the ECOWAS. However, further investments and policies to promote renewable energy consumption are required to enhance sustainable development the region.
Research on Short-Term Prediction Method and Application of Energy Consumption in Guangzhou and its Districts
Authors: Zhang Y T , Cai G T , Ke S J , Gao L P 
Published: August 2020

Abstract
Guangzhou’s energy consumption accounts for 24.9% of the energy consumption of Guangdong-Hong Kong-Macao Greater Bay Area (GBA). The improvement of Guangzhou’s energy management system has a significant impact and exemplary role on the energy management of GBA. Therefore, Guangzhou needs annual, quarterly and monthly energy consumption prediction for the requirements of energy consumption control and establishment of refined energy management system. Meanwhile, due to the lack of historical data, it also needs a short-term prediction method of energy consumption with short cycle and small sample. The paper provided variety of city level prediction methods and all districts energy consumption prediction method to predict the energy consumption of Guangzhou in 2018.Then this paper verify the prediction methods, and apply them to the prediction of energy consumption in 2019 and 2020. The results show that in the case of short-term prediction and small data samples, we can use a variety of factors to predict the energy consumption by refining the data collection area. And the result of all districts energy consumption prediction method is closer to the actual value than that of other methods. However, there are some difficulties in data collection of districts. Thus, in order to establish an accurate short-term prediction method, it is also necessary to strengthen the combination of city and district level energy monitoring and management systems, and expands the channels for collection and summary of district level energy data. Finally, in the future, the prediction method can be applied to GBA after the establishment of unified energy information statistics system of each city in GBA.
Study on Environmental Benefits through Life Cycle Value Co-creation in B2C Sharing Economy
Authors: Wu Yi , Zhang Dandan , Nie Jing 
Published: August 2020

Abstract
In B2C sharing economy, businesses and individual customers temporally trade product-based services through sharing platform. Life cycle management provides a good insight to assess the environmental benefits in such sharing environment. This paper discusses how information is generated during consumption and how information sharing facilitates life cycle value co-creation to enrich environmental benefits eventually. An in-depth case study is conducted to examine Mobike’s practices as a bike sharing case in China. It is concluded that customers join with businesses in value co-creation for service sharing in B2C sharing economy. Through well-established platforms, various types of information are co-created during consumption can be shared and serve as valuable input for life cycle management to co-create more values. Ultimately, environmental benefits can be expanded and enriched.
Study and Practical on Eco-environment Sustainable Development of Ecological Flow Design on Kohala Hydro-Power Project under “China-Pakistan Economic Corridor” in Pakistan
Authors: Zhang Jun , Bai Xiansheng 
Published: August 2020

Abstract
The “Belt and Road” Initiative proposed by China in 2013 creates a cooperation platform and development opportunity both for China and Pakistan. The “China-Pakistan Economic Corridor” (“CPEC”) cooperation agreements [1] of many energy and infrastructure projects were successfully signed and implemented under the initiative. Given China and Pakistan are all-weather strategic cooperation partners, construction of CPEC projects plays crucial strategic role [2] with political implication. Many Chinese companies and Chinese standards involved in these projects, though offered with good opportunity “Going Abroad” and environment, are significantly confronted with political risk, environmental risk, legal risk, safety/security risk and religion-cultural difference. Stressing the study on Eco-environment Sustainable Development of Kohala Hydro-power Project(KHP), one of the actively promoted schemes under CPEC, and reviewing the research, analysis and argumentation conducted by several international and domestic consultants on ecological flow, the paper finally determines scientific and rational ecological flow in the project and effectively mitigates environmental risk and social risk, achieving its long term cooperation and sustainable development in terms of environment protection, social stability and economic benefit.
Numerical Simulation of Near-Surface Atmospheric Conditions during a Radiation Fog over the Complex Terrain
Authors: Zhang Feimin , Ren Bohang , Dou Chunlei , Wang Chenghai 
Published: August 2020

Abstract
Numerical simulation of near-surface atmosphere during a radiation fog episode over the complex terrain is conducted. Results indicate that, the simulation of near-surface atmospheric wind, temperature, and humidity are very sensitive to land surface and boundary layer parameterization schemes. Simulation impacts of land surface and boundary layer scheme are manifested mainly in near-surface thermodynamic and dynamic quantities, respectively. The NOAH land surface scheme evidently overestimates the near-surface temperature, while underestimates the near-surface dew point and humidity during the fog formation period. The MYNN boundary layer scheme outperforms in near-surface wind simulation than other schemes. Combination of RUC land surface scheme and MYNN boundary layer scheme best simulates and reproduces the near-surface atmospheric conditions. Inter-comparison on the dynamic and thermodynamic of near-surface atmosphere among the experiments indicates that the simulation discrepancies are mainly in near-surface atmospheric stability, which could be the key factor in affecting the simulation performances. In particular, during the fog period, near-surface atmosphere is dominated by stable stratification, and the vertical velocity is relatively weak; before and after the fog period, the near-surface atmospheric stability is unstable.
Practice and Consideration on Restoration of Sandbar-Lagoon Geomorphology: A Case Study on Fudu Estuary Sandbar
Authors: Wang Peng , Lin Xia , Yan Jishun , Zhang Lianjie , Yu Yonghai 
Published: August 2020

Abstract
With the development and construction of the coastal economic belt, the marine ecological environment is under great pressure. The typical river mouth sandbar - lagoon hydro-geomorphological system is facing unprecedented threats, and it is extremely urgent to restore this typical geomorphological system. Taking the Fudu River Mouth Sandbar as a case study, combining with the characteristics of surrounding marine resources and the current situation of exploitation and utilization of sea area, this paper puts forward various ecological restoration measures including the construction of landscape ecological corridor, sandbar maintenance, demolition of reclamation works and structures, landscape park construction, on-line water quality monitoring, fisherman wharf reconstruction, etc. to solve the major problems in this area. This paper also suggests that, during the implementation of marine ecological restoration, the following measures should be taken, including to establish a library of coastline remediation and restoration projects within the study area, give full play to the technological advantages of universities and research institutes at the national and provincial levels, strengthen scientific and technological support, and implement the target-oriented responsibility system for marine ecological remediation and restoration by taking marine ecological remediation and restoration targets as indicators to assess cadres’ performance
Research on the Development of Green Buildings in China
Authors: Zhang Duwei , Wu Wanjing , Fang Ping 
Published: August 2020

Abstract
With the development of social economy, the environmental problems caused by traditional buildings are becoming increasingly obvious, which has aroused widespread concern in the society. The main social contradictions in China changed in 2017, which means that people have put forward higher requirements for other aspects of a better life, such as the environment. China’s economic structure is centered on heavy pollution and low-end manufacturing. In the long run, the cost of restoring the environment is much higher than the profitability of the enterprise. In addition, some resources are not renewable, and the mining industry is bound to face the problem of resource depletion. Therefore, China’s development model needs to be transformed. In the context of the conversion of old and new kinetic energy, green buildings are gradually becoming the mainstream of the construction industry. This article mainly introduces the development status of green buildings in China, exposes the existing problems and gives corresponding measures to better achieve sustainable development.
A Summary of the Research on Natural Resource Assets Departure Audit on Leading Cadres
Authors: Wang Cuilin , Qi Teng , Lin Shujia 
Published: August 2020

Abstract
With the promulgation of relevant laws and regulations in China in 2014, the study of natural resource assets departure audit on leading cadres has become a hot topic. It can be seen that the current literature has a rich discussion of basic theoretical research on natural resource assets departure audit on leading cadres, and the discussion on specific technical applications, method models, and accountability systems is unfortunately insufficient. The follow-up should deepen theoretical research in this subject, enhance the research of disciplinary integration, further strengthen the relationship between theory and practice and conduct more relevant explorations of evaluation systems and empirical analysis.
Driving Forces of Intra-Annual Variation in Plant Spectral Beta Diversity in Inner Mongolia Grassland
Authors: Bai Lan , Tian Jialing , Peng Yu 
Published: August 2020

AbstractThe variation trend of plant spectral beta diversity index of different types of grasslands in Inner Mongolia and its key climate drivers were explored by analyzing the changes of monthly and annual climate variables and spectral index of plant diversity during the period from 1982 to 2017.All the study areas are located in nature reserves that provide protection for fragile ecosystems and biodiversity, so grazing and human disturbance can be ignored. The results show that the variation trends in plant spectral diversity of different types of grassland in Inner Mongolia were different. The plant diversity in Anxi nature reserve reached the highest in October, while that in West Ordos, Xilingol and Tumuji nature reserve reached the highest in April. Temperature is a key driving factor for the variation of beta diversity of all types of grassland plants, and is negatively correlated with the plant diversity. Compared with the inter-annual scale, the climatic factors on the inter-monthly scale have a greater impact on the grassland plant diversity. Understanding monthly climate variables help us monitor the dynamic change of grassland plant diversity in a timely and effective manner.