bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical modelling of energy efficient exhaust orifices and hoods in ventilation and air conditioning systems in buildings and facilities of thermal power plants
Authors: Ziganshin A M , Batrova K E , Logachev K I , Mingazeeva D N 
Published: July 2019

Abstract
The paper presents the results of numerical simulation of energy-efficient inlet parts of exhaust ventilation systems in the form of the last side orifice and an exhaust hood. The profiling of the inlet sharp edges is used, which is made according to the outlines of the vortex zones that generates when the flow is separated at this edges. For this, the non-profiled geometry of the exhaust orifices is first modelled, where the outlines of the vortex zones are determining. Then a numerical model with profiling is created and the energy losses of such an improved shaped elements is determined. A significant reduction in pressure loss has been obtained: for the exhaust hood more than 40% and 30% for the last side orifice.
Method of calculation of power efficiency by optimization of work of heat supply systems
Authors: Zvonareva Yu.N. , Vankov Yu.V. 
Published: July 2019

Abstract
In this work results of mathematical modeling and results of the pilot studies conducted at the laboratory stand for the system of heat supply of Kazan, the development of power of the large cities directed to development of an integrated approach at a research of problems are integrated. By means of the program Zulu complex the mathematical model intended for optimization of work of power systems during their operation has been created.Results of the conducted researches have allowed to analyse influence of stage-by-stage introduction at consumers of automatic metering stations and weather regulation (AITP) on a hydraulic operating mode of system of heat supply for large municipal associations. In this work the main criteria are also considered, the algorithm and a method of calculation of power efficiency is developed by optimization of systems of municipal heat supply by introduction of the automated individual thermal points (AITP). The questions of influence of the made technical solutions on financial and economic and investment indicators are raised. The considered actions for energy resources saving are investigated for the purpose of reduction of volumes of consumption or more rational use of fuel and energy resources.
Retrospect and Prospect of Research on Resource and Environment Carrying Capacity
Authors: Ma Jingjing , Guo Kai , Wu Zhuolin , Liu Yiming 
Published: July 2019

Abstract
The carrying capacity of resources and environment is an important topic in the study of sustainable development. It is of great significance to analyse and summarize the relevant progress at home and abroad for future research in this field. This paper analyses the domestic and foreign bearing capacity related literature in chronological order, and divides the development process of bearing capacity into four stages: concept proposing, connotation expansion, method and model development, and comprehensive bearing capacity. And the progress in the evaluation and evaluation methods of bearing capacity in recent years is reviewed. According to the research status at home and abroad, it is proposed that the research should be strengthened in the aspects of comprehensive urban carrying capacity, index system and improvement of quantitative methods.
Analysis of Eco-epidemiological SIS Model under Sparse Effect
Authors: zhang Yong-po , ma Ming-juan , li Xue-fei 
Published: July 2019

Abstract
In this paper we formulated and analyzed the eco-epidemiological SIS model under sparse effect, and the sufficient condition of the local asymptotical stability of the equilibrium was studied with the method of latent root, analyze the global asymptotical stability of the boundary equilibriums, and also discuss the local asymptotical stability of the positive equilibrium, and established the sufficient condition of their stability.
Analysis of water sensitivity and microstructure for silt in Zhengzhou area
Authors: Lu Tian-You , Tian Yi-Chuan , Li Xin-Ming , Liu Chen-Hui 
Published: July 2019

Abstract
In order to study the evolution mechanism of Zheng Han Gu Cheng, direct shear tests and disintegration test were carried out by using the scattered soil of Zheng Han Gu Cheng to prepare the samples with different water content, and the microscopic mechanism of water sensitivity characteristics for silt was analyzed by field emission scanning electron microscope. The test results show that the stress-strain curve of silt behaves as hardening type based on different water content, and with the increase of water content, the shear stress increases first and then decreases, and reaches the maximum at the optimum water content. The variation on shear strength with water content is consistent with that of shear stress. With the change of water content, the cohesion reaches its peak at the optimum water content, while the internal friction angle changes little, and the difference is about 1.7 degrees. With the increase in water content, the disintegrating rate of specimen decreases gradually due to the influence of water film. From the SEM images of different water content, it can be seen that silt has the least pore size, dense grain arrangement and mosaic structure under the optimum water content, which greatly improves the strength of soil samples. With the change of water content, the micro-structure of soil gradually develops from loose structure of dense structure, then to mosaic mechanism, and finally to directional arrangement structure. The above research results can provide a theoretical basis of the protection and reinforcement of ancient city walls.
Effect of Ampicillin wastewater on the T-AOC and LDH activities of Zebrafish
Authors: Wang Yaxue , Wu Pengpeng , Shen Hong-Yan 
Published: July 2019

Abstract
In order to define eco-toxicity effect of Ampicillin wastewater on zebrafish, the indoor exposure method was used to study the impact of Ampicillin wastewater on zebrafish. In this study, zebrafish was exposed to ampicillin wastewater of 0.5%, 1.0%, 1.5% and 2.0% groups for 15 days to study the effect of T-AOC (Total Antioxidative Capacity) and LDH (Lactate Dehydrogenase) activities. According to the experimental data, the T-AOC and LDH activities in zebrafish muscle tissue had changed significantly during the period of exposure. The experimental results showed that the T-AOC value of zebrafish in each exposed group showed a “Λ” type change trend. On the 6th day, the 2.0% exposed group reached the maximum value of the whole test period (6.5399U•mg−1). The change of LDH activity was similar to that of T-AOC activity, showing a trend of “sharp increase--decline”. Among them, on the 12th day, the 1% exposed group reached the maximum (792.28 U•mg−1). The research shows ampicillin wastewater can cause some degree of oxidative damage to zebrafish.
Research on Transportation Infrastructure Investment based on Economic Sustainable Development
Authors: Zhang Yaoyao 
Published: July 2019

Abstract
The article explored the influence of transportation infrastructure investment on economic sustainable development with time series data of 1981-2017. Additionally, the cointegration theory and Grainger causality test were applied to analyse the relationship between transportation infrastructure investment and economic sustainable growth based on the C-D production function model. The results show that the investment in transportation infrastructure still has a stable effect on promoting long-term and short-term economic development.
Overview of research situation and progress on compressed air energy storage technology
Authors: Huang Baohua , Qiu Xiaozhi , Wang Weimeng , Li Hongzhi , Zhou Weiqing 
Published: July 2019

Abstract
So far, compressed air energy storage (CAES) system is another effective technology for large-scale energy storage which can improve grid flexibility and realize the grid generation of renewable energy. This paper reviews the developments of CAES technology including operation principles, application fields, technology performance of different types of CAES system and the current state-of-art. Finally, the potential key application prospects of CAES in future are discussed.
Sedimentation process of Cr and the mechanism in the bay mouth of Jiaozhou Bay 1983
Authors: Yang Dongfang , Wang Fengyou , Zhu Sixi , Huang Chengling , Fan Bailing 
Published: July 2019

Abstract
The investigation data on Chromium (Cr) in waters around the bay mouth in Jiaozhou Bay in May, September and October 1983 showed the sedimentation process of Cr, and tried to reveal the mechanism. Results showed that the change ranges of absolute horizontal loss and relative horizontal loss were 0.04-0.89 μg L−1 and 3.44-80.00%, respectively. The absolute vertical accumulation amount and relative vertical accumulation amount were 0.14-0.86 μg L−1 and 8.86-86.86%, while the absolute vertical dilution amount and relative vertical dilution amount were 0.01-0.62 μg L−1 and 0.85-37.50%, respectively. The absolute vertical dilution amounts in waters in the bay mouth were very high (86.86%) and relative high (37.50%) in May and September, respectively. The bay mouth was playing a role of parclose in which a big part of Cr was filtering continuously. The mechanism of the sedimentation process was that, the horizontal loss of substance content was very high when the marine current was moving across the bay mouth, and there was high sedimentation process in the bay mouth. In spite of the flow rate of marine current was increasing in the bay mouth, Cr in the open waters was difficult to be transported to the bay, and Cr in the bay was also difficult to be transported to the open waters.
Spatial motion process of Cr in the bay mouth of Jiaozhou Bay
Authors: Yang Dongfang , Li Haixia , Lin Dong , Zhang Yuan , Wang Qi 
Published: July 2019

Abstract
by the investigation of Chromium (Cr) dataset in waters around the bay mouth in Jiaozhou Bay in1983, calculated were the absolute and relative horizontal loss, and vertical accumulation and dilution amounts, and identified the spatial motion processes. Results showed that the absolute and relative horizontal losses were 0.12-0.59μg L−1 and 7.69-93.93%, respectively. The absolute and relative vertical accumulation amounts were 0.14-0.86μg L−1and 8.86-86.86%, while the absolute and relative vertical dilution amounts were 0.02-0.62μg L−1and 2.17-80.00%, respectively. Cr was mainly sourced from river runoff and marine current, and was moving to the bay mouth from the inside of the bay mouth and the outside of the bay mouth, respectively. There were high sedimentation processes, and were forming high accumulation processes in bottom waters. Therefore, there were diffusion and sedimentation processes in waters in the inside of the bay mouth and the outside of the bay mouth. This spatial motion process, was named as Yang’s Phenomenon.
Study on Sustainable Development of Iron and Steel Industry—Taking HBIS Group as an Example
Authors: Wang Muwen , Dai Yingying 
Published: July 2019

Abstract
Iron and steel industry is the basic industry of the national economy, playing an important role in China’s economic development. However, with the rapid development of iron and steel industry, the problems increasingly exposed. Taking HBIS as an example, firstly on the basis of existing theory, gathering 2008-2015 HBIS product data as the basic data, this thesis has some study results showing that in recent years, the iron and steel industry developed rapidly, but there are also problems, such as irrational product structure, frequent trade friction, lacking of iron ore pricing power, severe overcapacity and serious haze. Finally, this paper proposes innovative suggestions for HBIS aimed at the problems, such as the continuous technological innovation, regional merger and acquisitions. These initiatives may promote the development of China’s steel industry.
Analysis of Energy Saving Status of Rural Residential Buildings in Northern China
Authors: Hou Lei , Chen Weijiao , Gao Jianling , Zhao Yuqing 
Published: July 2019

Abstract
Based on the characteristics of rural architecture in China and the living habits of farmers, this paper investigates the research status of domestic passive energy-saving technologies and active-passive combined energy-saving technologies and their application effects in rural residential buildings, and draws guiding conclusions for rural residential design and renovation in northern areas.
A novel analytical method for the in-depth study of the effects of humidity and temperature on the adsorption of volatile organic compounds
Authors: Qiang Ning , Shi Tianzhe , Liu Tao , Cao Yiqi , Miu Haichao , He Jiao 
Published: July 2019

Abstract
We further explored the effect of temperature and humidity on the adsorption of volatile organic compounds on activated carbon. The equilibrium adsorption capacity of methylene chloride and water on activated carbon at different temperatures and different absolute and relative humidity was determined by dynamic adsorption method using dichloromethane as the target. The temperature and humidity are controlled by the temperature regulation and humidity control process. Regression analysis was performed on dichloromethane concentration, temperature and absolute humidity. The regression analysis yielded the equation: Y=0.01138X1-0.000968X2-0.000326X3+0.0492.
Which Factors Influence Chinese Farmers to Adopt Formulated Fertilization Technology?
Authors: Tang Yan , Yang Cuibai 
Published: July 2019

Abstract
Soil testing and formulated fertilization program has developed in China for more than ten years. This study examines the influence of psychological factors, farmer characteristics and soil testing policies on farmers’ intention to apply fertilizer. An expanded version of the theory of planned behavior is used as a framework. The results for the all farmer’ sample show that age, planting type and policy are significant and positively associated with farmers’ intentions. With psychological variables attitude, subjective norms, perceived behavior control and perceived resource levels increase by one unit, the probability of farmers changing fertilization behavior according to the soil testing system increased by 2.20%, 1.57%, 3.26%, 3.24% respectively. With the variable planting type being horticultural crops, age between 35 and 44, agricultural technology training and formulated fertilization system increased by one unit, the probability of farmers changing the fertilization behavior according to the soil testing system increases by 8.05%, 8.48%, 5.05% and 6.08%, respectively. Policy recommendations are made based on these results.
Linear programming Monte Carlo method based on remote sensing for ecological restoration of degraded ecosystem
Authors: Sun Ling , Zhu Zesheng 
Published: July 2019

Abstract
A linear programming Monte Carlo method (LPMC) is proposed to achieve the optimal restoration of the whole degraded coastal wetland ecosystem, i. e. the minimum restoration cost, in the case of uncertain ecological restoration costs of different degraded coastal wetlands. LPMC can comprehensively and systematically complete the dynamic analysis of coastal wetland ecosystem restoration cost, including the uncertainty analysis of ecological restoration cost and the screening of equivalent robust solutions. The applicability of this method is demonstrated by solving a practical problem of ecological restoration of coastal wetlands. The results show that this method can generate the robust optimal solution block for the globally optimal objective function and decision variables under the condition of restoring cost uncertainty, including a variety of optimal solutions adapted to the different needs.
Research on the Predicament and Countermeasures of Sustainable Development Education in Colleges and Universities
Authors: Xiang-chao Pan 
Published: July 2019

Abstract
Sustainable development education is an important part of sustainable development strategy. As the main force of personnel training, colleges and universities are important places for sustainable development education. Only by carrying out sustainable development education in university campuses can future builders have a scientific concept of sustainable development and sufficient knowledge of sustainable development. College students are the backbone of the sustainable development of the environment, society and economy in the future. Therefore, it is of great significance to solve the dilemma of sustainable development education in Colleges and universities and to carry out sustainable development education among college students.
Benefit Analysis of Soil and Water Conservation of Two Typical Economic Forests in Yuyao City
Authors: Lu Fangchun , Li Gang , Wang Ran , Zhang Jinjuan 
Published: July 2019

Abstract
In this study, the typical economic forests (Phyllostachys pubescens and Myrica rubra forests) in Yuyao City, Zhejiang Province, were taken as research objects. Rainfall, runoff and soil loss data were collected from runoff plots with different measures. The differences of soil and water loss in different measure plots were studied by benefit analysis and regression analysis. The results showed that natural Phyllostachys pubescens and Myrica rubra forests had better soil and water conservation benefits. Human disturbance will increase the runoff by more than 19% and soil loss by more than 55%. There was a significant regression relationship between rainfall-runoff-soil loss in the two forest lands, but the regression curve type was affected by vegetation structure and soil properties.
Influencing factors of the horizontal distributions of Pb in surface and bottom waters
Authors: Yang Dongfang , Zhang Longlei , Lin Dong , Yuan Xianpeng , Li Haixia 
Published: July 2019

Abstract
By the investigation dataset on Plumbum (Pb) in surface and bottom waters in waters from the bay center to the bay mouth in Jiaozhou Bay 1990, the analysis in this paper unveiled the seasonal variation and horizontal distribution of Pb. the results would determine that In May and August 1990, Pb contents in surface waters in Jiaozhou Bay were 4.64-13.39 μg L−1 and 3.84-11.01 μg L−1 respectively, compared to 4.64-9.41 μg L−1 and 2.96-8.86 μg L−1 respectively in bottom water. In according to the high values, Pb contents could be considered as moderate polluted, while in according to the low values the pollution level was slightly polluted. Pb contents were in order of spring > summer in both surface and bottom waters. The source inputs of Pb to this bay were different in different seasons and locations, resulting in different seasonal variations of Pb contents in surface waters. By means of vertical water’s effect, Pb in surface waters were migrating to bottom waters continuously, resulting in the horizontal distributions of Pb in surface and bottom waters were consistent. Pb contents in bottom waters were relatively high/low in case of Pb contents in surface waters were relatively high/low. The seasonal variations of Pb contents in surface waters were mainly influencing by the source inputs, while in bottom waters were mainly influencing by the source input and the sediment process. The horizontal distributions of Pb in surface and bottom waters were consistent in different seasons. In any seasons, or under influences of different major sources, the horizontal distributions of Pb contents in surface and bottom waters were consistent.
Investigation on Oxygenation Performance and Numerical Simulation of Swirling Aerator
Authors: Zhang Bo , Pu Xin , Qi Yongjie , Mao Shuzhou , Wu Zhiren 
Published: July 2019

Abstract
The oxygenation performance of the swirling aerator was evaluated by an air-water system oxygenation experiment. The flow pattern analysis on the oxygenation process of the swirling aerator was carried by PIV measurement and numerical simulation. The test results showed that the oxygen transfer coefficient (KLa) increased with the increase of intake air volume, and the maximum value of KLa (20°C) was 0.721L/min under 8m3/h condition. PIV measurement results showed that the number of tiny bubbles in the water increased with the increase of intake air volume and the bubbles form vortex in the pool with the water flow, which enhanced the mass transfer effect. The maximum number of tiny bubbles appeared at 8m3/h. The results of numerical simulation showed that due to the difference in speed, obvious vortex phenomenon occurs. With the increase of intake air volume, the intensity and quantity of vortex increase, the air-water mixing was more sufficient, and the air volume fraction was higher.So the oxygenation performance was stronger, which was consistent with the PIV measurement and oxygenation test results.
Ecological Game of Animal Populations in Different Environments
Authors: Zhang Yalei , Chang LiJun 
Published: July 2019

Abstract
Under different ecological conditions, the results of animal evolution are different. As global warming and the environment deteriorates, the rate of species extinction is accelerating. Therefore, in this paper, the game between animal populations and ecology is studied, which provides a basis for more scientific protection of animals and environment. First, the animal’s environmental needs are studied: By establishing the relationship between the heat gained by the animal and the required land area, there comes a fact that the more energy the animal consumes, the more land it needs. The land area is related to environmental factors such as temperature and precipitation. Therefore, given the natural conditions of a certain place, the land area can be obtained through the regression equation. Secondly, considering the long-term development, based on the ecological game model, the differential dynamic system is established. In different food supply situations, three game results of population and ecology are obtained: continuous growth, continuous reduction, and cyclical fluctuations.
Effect of Coke Powder Ratio on Particle Emission and Sinter Quality in Sintering Process
Authors: Wang Hui , Zhang Pu 
Published: July 2019

Abstract
Starting from the perspective of source reduction, the emission characteristics of particulate matters in sintering flue gas and sinter quality were studied by a sintering cup based on the fixed carbon 3.6% conditions in sintering raw materials. The particles were sampled by an Andersen 8-stage impactor at the coke powder ratios at 100%, 75%, 50% and 0%. The results showed that the particles in the sintering flue gas were mainly fine particles below 2.63 μm. When the coke powder ratio was 100%, the removal efficiency reached the maximum value of 34.37%. The effects of coke powder ratio on the sinter index were reflected in: when the coke powder ratio reduces, (1) the sintering speed decreases; (2) the solid fuel consumption increases; (3) the drum index improves. Compared with comprehensive indicators, the 100% coke powder was the most conducive condition to the production of enterprise sintering process.