bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on water cycle simulation model of multi-source and multi-functional irrigation area based on SWAT model (I): Principles and construction methods
Authors: Wang Shiwu , Wen Jinhua , Wang Helong , Cui Yuanlai 
Published: July 2020

Abstract
Aiming at the water cycle simulation of multi-sources and multi-functional irrigation area, the coupling relationship between natural water cycle and social water cycle was established based on SWAT model. The methods of sub basins divisions in SWAT model were improved, which were incorporated into the improved SWAT model. The water cycle process of complex water resource system and the response to various human activities in irrigation area were simulated accurately and quantitatively to meet the needs of accurate water resource management.
Building sustainable development environment of exhibition and dealing with waste reasonably
Authors: Yumei Han 
Published: July 2020

Abstract
The waste formed by the special booth and the paper propaganda materials in the trade exhibition has become a serious public hazard. Therefore, the government must formulate laws and regulations to strengthen the management and restriction. The trade association must perfect the existing regulations and formulate new systems, supervise and manage the whole process and enforce them. The participating enterprises must change their ideas and improve their marketing level. The three parties work together to reduce the waste and create a sustainable development environment for the exhibition.
Analysis on Practical Teaching Reform of Undergraduate Major of Agricultural and Forestry Economic Management
Authors: Jianlan Su , Qin Long 
Published: July 2020

Abstract
This paper selected 21 universities and colleges which own the major of agricultural and forestry economic management as samples, analyzed the current situation and the shortages in professional practice teaching systems, proposed that the universities and colleges should scientifically and reasonably design professional practice teaching system, strengthen the training of responsibility consciousness, professional ethics and innovation ability of students, establish a feedback and adjustment mechanism for the practical teaching system of agricultural and forestry economic management, the aim is to meet the needs of agricultural and rural modernization.
Research on China’s renewable energy strategic development strategy from the perspective of sustainable development
Authors: Ying Jian , Wenbo Liu 
Published: July 2020

Abstract
Under the dual pressure of international energy crisis, global warming and environmental deterioration, the construction and development of sustainable energy system has become the focus of social concern. The alternative use of renewable energy will effectively prevent energy depletion, ecological deterioration and control the pace of global warming. The development of renewable energy strategy will effectively resolve the energy resource tension and meet the energy demand of national economic development. On the basis of discussing the serious problems facing the development of China’s renewable energy strategy, this paper expounds the significance of the promotion of renewable energy strategy to the sustainable development of China, and puts forward some suggestions for the development of renewable energy in China.
Green Product Design Considering Consumer’s Income and Environmental Awareness
Authors: Liu Na , Zhang Linghong 
Published: July 2020

Abstract
With the enhancement of consumer environmental awareness, many companies are paying more attention to developing green products with higher environmental quality. In this paper, we study how the consumer’s valuation towards product’s qualities and consumer demand affect manufacturer’s product design and pricing regimes. Assuming there is a monopolist who manufacture products with traditional and environmental qualities and the market is divided into four segments according to consumer’s income level and environmental awareness, we give the optimal closed form solutions of the qualities and prices of products in mass-market and segment-market strategies. Additionally, we discuss the impacts of consumers’ valuation towards products’ qualities and market segments’ size on the total environmental qualities. We find that (i) various parameters, especially consumers’ valuation towards products’ qualities and market share of each segment affect the firm’s choice on market strategies and consequent environmental performance; (ii) green product development does not always increase and may decrease the degree of environmentally friendliness.
Test research of different material made garbage enzyme’s effect to soil total nitrogen and organic matter
Authors: Tong Yujie , Liu Bingguang 
Published: July 2020

Abstract
Garbage enzyme is made from fruit and vegetable wastes. Apple peel, dragon peel and eggplant peel are selected as to ferment for 6 months. The product has many active enzymes and microbiology flora. To research the effect of garbage enzyme to improve soil nutrient, self-made garbage enzyme is diluted in the ratio of 1:800 and irrigated to soil of flowerpot. Soil is irrigated by dilution once in two days for four weeks. Total nitrogen and organic matter are detected once per week. Test method of total nitrogen and organic matter is respectively Kjeldahl method and potassium dichromate method. Total nitrogen and organic matter background are respectively 1.61 g/kg and 24.32 g/kg. The results illustrate that garbage enzyme gradually increase soil total nitrogen and organic matter with the increase irrigation time. Soil sample’s total nitrogen of apple peel, dragon peel and eggplant begin to increase gradually and respectively peaked at 3.17 g/kg, 4.13 g/kg and 4.27 g/kg after 4 weeks irrigation. The content of total nitrogen is classified as the first level (>0.20 g/kg). After 4 weeks irrigation of dilution of garbage enzyme made from eggplant peel, the sample’s organic matter begins to increase gradually and peaked at 49.33 g/kg after 4 weeks. The content of organic matter is higher than background (24.32g/kg) and classified as the first level (>40 g/kg).
Study on the Application of Vegetation Protection and Ecological Restoration Technology in Stone Slope
Authors: Zhang Ming , Hu Dandan , Fan Jin 
Published: July 2020

Abstract
Taking the vegetation protection and greening project of the slopes of Yunan and Jigang quarry in Shenzhen as an example, the ecological restoration effect of the slope vegetation protection is evaluated through the application of vegetation greening protection technology of different soil quality and grade slope as well as the results of slope runoff sand content test and vegetation coverage rate survey. The result shows that:(1) Net planting grasses by spraying sowing technology has an excellent effect on the green protection and ecological restoration of steep soil slope and gentle rock slope, and the vegetation coverage rate is as high as 96%; Geocell external-soil spraying seeding technology has a very good effect on the green protection and ecological restoration of gentle soil slope, and the vegetation coverage rate is up to 99%; The planting slot technology is suitable for green protection and ecological restoration of high and steep rock slope in the quarry, and the vegetation coverage rate is up to 80%. (2) The runoff sand content decreases significantly after the slope is afforested, and the vegetation afforestation reduces the soil erosion by intercepting rain water and fixing soil by roots. (3) Drip-irrigation system is used in slope vegetation protection to achieve the purpose of energy saving, environmental protection and natural landscape integration.
Analysis on Changes of Water Quality in Xuanmen bay due to Construction of Eastern Artificial Lake
Authors: Shichang Huang , xu Liu , Lixiao Chen 
Published: July 2020

Abstract
In this paper, the data of water quality before construction of Xuanmen eastern artificial lake is compared with the data after construction to analyze the change of water quality inside and outside the lake in Xuanmen bay. After the lake was built, the phosphorus remained basically unchanged, and the salinity dropped sharply in the lake, COD increased sharply, and inorganic nitrogen increased more. The lake is close to a freshwater system. According to local requirement for water, inorganic nitrogen has become a pollution factor. the water quality of the seawater outside the lake was stable, and the construction of the lake had no effect basically on the water quality. Basing on regulation of the basin incoming water quality and lake area, a box model is used to predict the water quality change in the future, it will take 5 years to reach 0.5 below of the salinity. To reduce concentration of nitrogen in the lake, the incoming water needs to be treated to reduce the nitrogen, and at the same time, it should be to take biological measures to reduce nitrogen in order to meet local water quality requirements.
The Controlling Effect of Fault Structure on the Development of Shahezi Formation in Xujiaweizi Fault Depression
Authors: Jianghong Dijiaxiang 
Published: July 2020

Abstract
Xujiaweizi fault depression is a dustpan-like fault depression controlled by Xuxi and Songxi faults. Several synsedimentary faults are developed in the fault depression. The different patterns of synsedimentary faults and their related structural characteristics in different periods play an important role in controlling the sequence development and sedimentary filling of the whole Shahezi Formation in the fault depression. Specifically, the lower strata are relatively flat and the sedimentation rate is slow; in the middle, the sedimentation rate increases, while in the periphery of the sedimentary center, the topography gradually sags, and the degree of sag is fast in the early stage and slow in the later stage.
Aldol condensation followed by ozonation to reduce phenolic compounds in coking wastewater
Authors: Wang Y , Yang L H , Chen X , Zhang X , Li G C , Li X B , Chen S 
Published: July 2020

Abstract
To treat the coking wastewater with phenolic compounds over 3000 mg/L, the biological method cannot be directly employed due to the toxicity to microorganisms and other methods are usually expensive. In this study, the aldol condensation followed by ozonation was developed to reduce the phenolic compounds in the wastewater from a coal coking plant in Gansu Province of China. For the aldol condensation reaction, the removal efficiency of phenolic compounds increases with increasing the molar ratio of formaldehyde to phenol (F/P), reaction time, reaction temperature, and acidity or alkalinity. Under alkaline conditions the removal efficiency of phenolic compounds is higher than under acid conditions. If the reaction temperature, reaction time, F/P and pH values of the aldol condensation are respectively 95°C, 3 hours, 2.0 and 10.5, the concentration of phenolic compounds decreases from 9018.3 mg/L to 1901.2 mg/L after precipitation separation of phenolic resins. Subsequently adjusting the pH value to 7 further reduces the concentration of phenolic compounds to 764.7 mg/L. Thereafter 2 hours ozonation further reduces the concentration of phenolic compounds to 22 mg/L, resulting in total removal efficiency of 99.75%. The ozonation removes phenolic compounds with methyl/ethyl substituent on benzene ring easier than phenol.
Study on the evaluation method of operation performance for rural domestic wastewater treatment facilities
Authors: Jin Huang , Junan Wang , Xuelian Zhao , Xiaoxin Zhang , Weili Wei 
Published: July 2020

Abstract
Rural domestic wastewater treatment has become one of the key and main battlefields of China’s sewage treatment industry, the operation performance of rural domestic wastewater treatment facilities is directly related to the realization of rural environment comprehensive renovation and rural revitalization strategic planning objectives. This paper expounds the present situation and existing problems of the operation of rural domestic wastewater treatment facilities in China, and the necessity of carrying out the research on the evaluation method of the operation performance of rural domestic wastewater treatment facilities, and rural domestic wastewater treatment facilities Operation Evaluation Index System Construction, evaluation index calculation method, scoring standards and evaluation methods. It is expected to promote the operation reliability and effectiveness of rural domestic wastewater treatment facilities in China through the use of evaluation methods of the operation effectiveness of rural domestic wastewater treatment facilities.
Current Status of Technology and Standards of domestic Solid Waste Incineration in China
Authors: Xiaoxin Zhang , Jin Huang , Ling Lin , Sinan Zhang 
Published: July 2020

Abstract
This paper sorts and analyzes current technologies and standards, as well as existing problems and demands in the domestic solid waste incineration industry in China, in order to further promote the establishment of domestic solid waste incineration standard system in China, standardize key technologies, devices and processes of efficient waste incineration, and promote the manufactry and utilization of advanced equipment, thus providing solid technical support and guarantee for the enhancement of overall performance level and pollutant up-to-standard emission of domestic solid waste incineration industry in China.
Precipitation quality control method based on SFA and phase space local prediction
Authors: Chen X , Tang H S , Kan Y J , Xiong X 
Published: July 2020

Abstract
Most of the quality control applications of hydrological data are based on basic quality control methods such as logical detection, extreme value check and spatial consistency check. Although these methods can detect problem data with large errors, this makes the data lack credibility. Therefore, a single station data quality control method, SFA-WZLM, is proposed in this paper. This method uses slow feature analysis (SFA) to extract external forcing factors for embedding in chaotic local prediction models. Observations from January 1987 to October 2015 was used as the train set, and observations from December 2015 to October 2017 were used as the test set. The results indicate that the method has higher prediction accuracy than the prediction model without embedded external forcing factors, weighted first-order local prediction model (WFLM) and weighted first-order local prediction model (SFA-WFLM) including external forcing factors and exhibited the best quality control error detection. In addition, the method shows good stability in 6 different climates and different terrain stations across the country in China.
Study on the Treatment and Recovery of Acid in Steel Pickling Wastewater with Diffusion Dialysis
Authors: Xiaoyu Wang , Gang Li , Shuo Yang 
Published: July 2020

Abstract
Steel pickling wastewater is taken as the subject. A self-made diffusion dialysis reactor is used to recover the acid in the waste fluid. The volume of the diffusion dialysis reactor is 10L and the effective membrane area of the anion exchange membrane is 150cm2. An investigation is performed for the effects of the initial pH, the initial iron concentration, the diffusion fluid flow ratio and the number of cycles of the solution on the acid recovery efficiency. The test results showed that when the concentration of iron ions in the initial solution is 20g/L, the initial pH is 1, and the liquid flow ratio is1:1.5 (dialysis chamber: diffusion chamber), the recovery rate of acid in the waste fluid can reach a maximum of 56%.
Numerical computation of multi-level intake of diversion project
Authors: Wang Yuehua , Zhong Xiaodai , Wang Bin , Hu Jinchun , Bao Zhongjin , Xu Gang , Liu Yun , Han Xiaowei 
Published: July 2020

Abstract
Multi-level intake of diversion project has the advantage of selective intake. To further understanding of the hydraulic characteristics of this intake, a numerical simulation was carried out by RNG k – ε turbulent model. The parameters of flow pattern and velocity distribution, water head loss, water source stratification are analyzed. Researches show that the local flow shape is complicated. The water head loss coefficient at inlet is in a range of 0.31 to 0.62. The effect of multi-level intake structure is fairly good. The results provide reference for the design and operation of similar engineering.
Structural selection and design analysis of a super high-rise office building
Authors: Zhang Xiaomeng , Liu Wenting , Li Yongxin , Yang Songlin , Liu Xiang 
Published: July 2020

Abstract
A super high-rise building, with a height of 238 meters, 4 floors underground and 50 floors above the ground, exceeds the Class B height limit of the specification, and belongs to an ultra-high over-limit structure. Through the selection of different structural systems, its structural system is determined as the frame core tube structure. This structure uses YJK, SATWE, PKPM-SAUSAGE for structural analysis, uses performance-based methods for seismic design, and the weak parts of the structure are strengthened accordingly. Structural analysis mainly includes elasticity analysis of small earthquakes, elastic time history analysis of small earthquakes, elastic and inflexion analysis of moderate earthquakes, inflexibility analysis of large earthquakes and elastoplastic time history analysis of large earthquakes.
Test Analysis on Drainage Base Mixture of Asphalt Pavement in Cold Area
Authors: Gao Wei , Dong Naibao , Wang Xu , Zeng Mingming 
Published: July 2020

Abstract
Drainage base can effectively maintain the service performance of asphalt pavement structure in cold and humid areas, and improve its service durability. The void ratio of drainage base asphalt mixture shall be more than 20%, and the asphalt content is generally between 3.15% and 3.55%. Five kinds of open graded asphalt macadam mixtures were selected and tested for structural performance, water permeability, mechanical performance and water temperature stability. According to the test results, it is shown as follows. The water permeability coefficient of the five kinds of asphalt mixtures at 15°C was 0.10-0.19cm/s. The ratio of freeze-thaw splitting strength was 72.1%-92.3%. The compressive strength of uniaxial compression test was 4.53-8.91MPa. The compressive modulus of resilience was 794.79-1236.51MPa. The maximum bending tensile strain of beam was 3150-4977με. It has good structural strength, water stability and drainage performance. After 10-50 freeze-thaw cycles, the performance of structural performance index, tensile strain and mechanical index of asphalt mixture is well. The asphalt mixture can be used for drainage of asphalt pavement structure in high-latitude and low-altitude cold area. The recommended suitable layer is the upper base or lower layer of asphalt pavement structure.
Numerical Analysis of the Seismic Response of a Vibration-Isolated Foundation in Deep Water
Authors: Huo Shaolei , Li Xiaojuan , Gong Weiming , Dai Guoliang 
Published: July 2020

Abstract
Natural hazards, such as earthquakes, flooding, hurricanes, and tornados, very often have devastating effects on civil structures, with the consequences of loss of human lives and negative economic impacts. The deepwater vibration-isolated foundation is a new bridge foundation that can prevent bridge damage due to large deformation under strong natural hazards because the laying of a specially designed gravel, sand and other materials between bridge foundation and subgrade can allow the foundation to slide and swing. Taking the main tower foundation of the Rion-Antirion bridge in Greece as an example of a deepwater vibration-isolated foundation structure, the a vibration-isolated numerical model which considers the influence of hydrodynamic pressure and hydrodynamic damping is established to study the seismic response characteristics of this structure to find the optimal vibration-isolated stiffness and damping. It is found that the structure mainly undergoes translational movements under the optimum stiffness and damping isolation conditions.
Analysis on the Application of Architectural Semiotics in Design
Authors: Huang J , Zhou H J 
Published: July 2020

Abstract
In the field of architecture, more and more “symbols” have been introduced into architectural design, enriching the connotation and methods in architectural design, and adding a lot of vitality to architectural design methods. Based on the emergence, development and characteristics of architectural semiotics, this article analyzes the application of architectural semiotics in architectural design in combination with specific practical cases, and discusses the development and significance of semiotics in architectural design.
Long-term shrinkage behaviour of steel-concrete composite slabs with recycled coarse aggregate
Authors: Wang Qinghe , Yang Jinsheng , Patrick Baligasima , Zheng Anna , Shi Yu 
Published: July 2020

Abstract
Non-uniform shrinkage profile through the slab thickness is observed in composite slabs with natural concrete due to the inability of the slabs to dry from their underside, including an additional deflection for composite slabs under the serviceability state. The porosity and shrinkage deformation of recycled aggregate concrete (RAC) are remarkably increased by the residual mortar adhered to the surface of recycled coarse aggregate (RCA), which will complicate the ability to predict the serviceability of composite slabs with RCA. In this study, two full-scale RAC specimens with depths of 120 mm and 180 mm were prepared and tested for 140 days, with the mid-span and quartiles-span deflections were measured; two small-scale solid concrete samples were poured and measured monitoring the development of non-uniform shrinkage. Results obtained indicated that the non-uniform shrinkage through the slabs depths was approximately linear-distributed, the gradient of which increased with curing time, however, decreased remarkably with the increasing slabs depths. The long-term deflections of two full-scale specimens were remarkably influenced by the non-uniform shrinkage. Based on EC2, a modification of notation size of member (h) was used to predict the shrinkage strain on the top surface of the slabs with one way to diffuse moisture, and the predicted data well match the experimental results.
Transient numerical simulation of gas-liquid two-phase flow in long distance water supply pipeline
Authors: Wang Kaixi , Wang Yan , Ma Jing 
Published: July 2020

Abstract
To reveal the gas-liquid two-phase flow characteristics in water supply pipeline due to the rugged terrain, flow pattern, pressure, velocity, turbulent kinetic energy and turbulent energy dissipation rate of 6 key sections and 4 profiles were simulated and analysed on the conditions of with and without exhaust valve. The results showed that water cannot flow smoothly without exhaust valves at sections 1-1, 2-2 and 3-3, while that flows smoothly at sections 4-4, 5-5 and 6-6. For sections 1-1, 2-2 and 3-3, water can only cover less than 50% of the pipeline cross section when the exhaust valves were not set, and various backflow zones can be observed in these sections, which can increase the resistance of the water flow. The turbulent kinetic energy of the cross sections 1-1, 2-2 and 3-3 were 0.87, 1.02 and 0.09 m2/s2, which can decrease to 0.0018, 0.0017 and 0.0017 m2/s2, respectively, after the exhaust valves were set. Meanwhile, the pressure in different cross sections reduced by 1 to 10 kPa and the streamline were nearly uniform and straight for the main flow in the pipe with the exhaust valves. The reverse vortex disappeared and the velocity distribution of the main flow was more uniform in these sections.