bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research of natural biomass conversion in the Republic of Burundi
Authors: Manigomba J.A. , Chichirova N. D. , Gruzdev V.B. 
Published: July 2019

Abstract
The paper investigates the solution of an urgent energy problem in Republic of Burundi. The pyrolysis process using a recycling of peat, wood waste, agricultural biomass, domestic and industrial waste with the objective of obtaining a secondary energy resources is proposed. Based on this method a pyrolysis gas with a ratio of CO and H2 varied from 1:1 to 1:3 is obtained. The main variable factors determining this composition are the temperature. With the increase of temperature, the pyrolysis gas increases. The number of experiments with fixed factors was chosen at least eight. The experimental setup was used to study the pyrolysis gas of dry sawdust and peat in the temperature range from 450 to 1150°C.
Cascade bowl-type heat and mass exchange packing with dripping irrigation mode
Authors: Merentsov N.A. , Lebedev V.N. , Persidskiy A.V. , Balashov V.A. 
Published: July 2019

Abstract
Data of experimental study of hydrodynamics, heat and mass transfer of cascade bowl-type heat and mass exchange packing with dripping spray mode and some comparative characteristics of the packed device with packing, which have wide industrial application, are given in the article.
Modeling of pyrolysis process of high-moisture coals
Authors: Pyatygina M. V. , Galkeeva A. A. , Mingaleeva G. R. 
Published: July 2019

Abstract
The research is aimed at solving the fundamental scientific task of creating scientific fundamentals, deep processing of hydrocarbon raw materials (preliminary gasification, conversion, pyrolysis of solid minerals and renewable combustible resources) to produce liquid and gaseous fuels and a total increase in efficiency.
Modeling the process of convective mass transfer in a tubular electrochemical reactor
Authors: Sitnikov S Y , Plotnikova L V , Dresvyannikov A F , Kiselev N S , Mironov S P 
Published: July 2019

Abstract
The model, describing a processes of convective masstransfering in a tubular electrolytic cell with the much distinguishing sizes of electrodes is proposed suitable for practical calculations.
The electrochemical reactor permitting to clearing of water with the help of chemical reactions in bulk of a solution at participation of electrogenerated reagent is created.
Regional management of district heating
Authors: Sovetova N , Sinitsyn A , Tritenko E , Derevianko O , Mukhametova L , Fedukhin A , Makoev S , Kalyutik A 
Published: July 2019

Abstract
Nowadays in Russia we see rapid modernization of power engineering and transport systems. Under these conditions the issue concerning improvement of regional heat supply system energy-efficiency has gained a new importance. The aim of this study is to find new development directions of the public-private partnership (PPP), specifically from the perspective of its energy efficiency. Amid the financial crisis and economic sanctions the formation of public-private partnership allows increasing of energy efficiency of regional fuel and energy complex by means of regional energy service company creation. This paper will be useful both for central and local government and for private business.
Mathematical simulation of the thermal processes in the heating networks insulation using thin-film covering
Authors: Zakirova I.A. , Chichirova N.D. 
Published: July 2019

Annotation
The necessity of application of computer technologies in the educational process with increasing requirements to the higher technical education quality is shown. The possibility of the program complex using of finite element modeling in the learning process, in the numerical study of the convection effect on heat exchange in the porous insulation of heat network pipelines using thin-film coatings, is considered.
Analysis of thermodynamic efficiency of the fuel preparation systems with an intermediate hopper at thermal power plants
Authors: Zatsarinnaya J N , Logacheva A G , Solovyova A A 
Published: July 2019

Annotation
The thermal and thermodynamic calculation of closed and open loop individual systems of coal preparation at TPP with different types of mills reveals the possibilities of increasing the efficiency of the technological scheme by utilizing the heat removed from the system and thus increasing the thermodynamic efficiency.
Effects of exogenous melatonin and abscisic acid on the antioxidant enzyme activities and photosynthetic pigment in ‘Summer Black’ grape under drought stress
Authors: Lin Zhiyi , Wang Yunmei , Xia Hui , Liang Dong 
Published: July 2019

Abstract
In this study, ‘Summer Black’ grape seedlings were used as the experimental materials, to be applied with 100μmol/L melatonin (MT) and 50μmol/L abscisic acid (ABA) solutions to investigate the effects on antioxidant enzyme activities and photosynthetic pigment under drought stress. The results showed that the increase of chlorophyll content in grape leaves due to drought was reduced by the function of MT and ABA, while the content of carotenoid showed the opposite trend. The antioxidant capacity was measured with SOD, POD and CAT, and showed that MT, ABA treatment significantly increased the activity of SOD, but reduced activity of POD and CAT in the leaves. ABA had the greater effect, but MT seems impaired the influence of ABA. The results provided a theoretical basis for improving the yield and quality of grape.
Research on the Technology of Anti-Erosion and Vegetation Promotion for Pisha Sandstone Region in the Middle Yellow River Basin
Authors: Peiqing Xiao , Wuyu Wei , pan Zhang , Chunxia Yang 
Published: July 2019

Abstract
Pisha sandstone region is the most vulnerable and the most dramatic area of soil erosion, and it is also the concentrated source area of the coarse sediment of the Yellow River. It is of great significance to research the anti-erosion and vegetation promotion technology in the Pisha sandstone region. Based on the review of previous research results on soil erosion control technology in Pisha sandstone area, this paper mainly introduces the anti-erosion and vegetation promotion technology in recent years, including the anti-erosion and vegetation promotion material suitable for Pisha sandstone area in the middle Yellow River Basin, the modified dam-building material of Pisha sandstone, and the stereoscopic configuration mode of binary stereoscopic anti-erosion and vegetation promotion measures in Pisha sandstone area. Field monitoring experiments showed that the runoff and sediment yield of the experimental plot were reduced by more than 70% and 91% respectively, which can provide technical support for the harnessing and development of serious soil and water loss areas of Pisha sandstone and the harnessing and development of the Yellow River.
Effects of forest on seasonal runoff in North China
Authors: Lv Xizhi , Zuo Zhongguo , Sun Juan , Ni Yongxin , Ma Li , Zhang Yang 
Published: July 2019

Abstract
The relationship of forest-water is a hot and important issue in ecohydrology studies. The relations between forest and water had been widely investigated, whereas information on the impact of forest on seasonal runoff is still lacking. In this study, the statistical and graphic analyses based on the long-term hydrological data of the 20 watersheds in the rocky mountain area of North China were made to analyse the impact trend of forest on seasonal runoff. The results showed that the low flow coefficient decreases by 3.3 % with a 10 % enhancement of the forest coverage. However, the effects of forest on high flow are much more complex and no obvious changing trends can be observed. With increasing forest coverage (f), the high flow show a trend of “increasing (f<20 %)—stable (f is 20-60 %)—decreasing (f>60 %)”, and there has the largest high flow when f is 20%∼60%, the largest high flow coefficient is about 30%.
Enhanced removal efficiency and influencing factors of nitrobenzene in soil by foam flushing
Authors: Yan Su , Wei-guo Cheng , Ya-bin Li , xin Wang , Jian Wang 
Published: July 2019

Abstract
Laboratory scale experiments were conducted to investigate the removal efficiency of nitrobenzene in soil by different kinds of flushing liquid. In addition, the influencing factors, such as foam injection rate, foam quality and permeability of medium for the removal efficiency of nitrobenzene in soil were discussed in the paper. The results showed that the residual rates of nitrobenzene in soil were 62.15%, 63.18%, and 2.65%, while the flushing liquid were water, SDS solution, and SDS foam, respectively. The removal efficiency of nitrobenzene was found to be greatly increased by using a foam-enhanced surfactant solution flooding approach, probably because of the reduction in the channeling flow effect. These data demonstrated that by the use of foam, the nitrobenzene recovery efficiency can be significantly improved. Within the scope of the study, the foam quality and foam injection rate has little effect on the total removal efficiency of nitrobenzene in soil. Moreover, the total removal efficiency of nitrobenzene for low permeability (0.1∼0.25mm, 0.25∼0.5mm) is greater than that in high permeability medium. Because of the time necessary for distribution of foam through the soil and desorption process is much longer for soil with a low hydraulic conductivity, this technique is more effective in soil with lower hydraulic conductivity and higher porosity.
Review on catalytic oxidation degradation of oil-contaminated soil by Fenton-like reagent
Authors: Chen Jinmin , Hu Zhengfeng , Zhu Mingqiao 
Published: July 2019

Abstract
Petroleum-contaminated soil, whose soil availability is in rapid decrease and which also does great damage to other living things, is greatly different from the natural soil. Therefore, it is necessary and urgent to restore the oil-contaminated soil. In this paper, the current status of catalytic degradation of oil-contaminated soil using Fenton’s reagent is reviewed, including mechanism of traditional Fenton’s reagent, Fenton-like catalyst, photo-Fenton catalysis, and other modification.
Constructing the Evaluation System of Urban Land Ecosystem Based on Entropy Method and Analytic Hierarchy Process—Taking Shaanxi Province as an Example
Authors: Wei Fang , Lintao Lou 
Published: July 2019

Abstract
The article establishes the ecosystem evaluation system of saline-alkali land in Shaanxi Province by using soil index, environmental index, biological index, productivity index and sustainable development index, and uses entropy method and analytic hierarchy process to determine the weight of index evaluation system. Finally, the practice and evaluation of the saline-alkali land ecological management method in Shaanxi Province was carried out, and it was found that the establishment of the index system has theoretical and practical significance.
Marvellous “1” : A Spatio-temporal Model of Ecological Environment
Authors: Huang Zhilin , Jiang Shanshan , Wang Xin , Zhang Yujie 
Published: July 2019

Abstract
Traditionally, most land-use projects do not take the impact of ecological degradation into account.The negative economic costs of land use change are substantial.To tackle these problems,in this paper,we established a spatio-temporal ecological environment model.
First, we select the method of Principal Component Analysis(PCA) to screen out the tertiary time-related indicators which affect ecological environment, then adopt Weighted Average Algorithm (WAA) to calculate the weights of the secondary indicators.Meanwhile, make each feature quantity at the same level and get their weighted sum.When the exploitation of ecological resources is balanced with its carrying capacity, the weighted sum is tend to 1.
Then we find the spatial variable,and introduce the ratio of supply and demand,which named supply-demand coefficient, and make up an equation with the weighted sum mentioned above.When the supply and demand of a region are balanced, the supply-demand coefficient mentioned above is equal to the weighted sum,which is also 1. When the supply is greater than the demand, both sides of the equation are greater than 1,at this time, excessive supply causes unnecessary economic costs.
Finally, we use the Genetic Algorithm(GA)to evaluate the supply-demand coefficient, so as to adjust the environmental degradation caused by land development projects in time.
Numerical Simulation of Heat Transfer Performance of Micro-heat Pipe Array based on FLUENT
Authors: Yang Jingang , Yu Tianmiao , Wei Sinan , Wang Xinpeng 
Published: July 2019

Abstract
The structure and basic principle of heat pipe and plate micro heat pipe array are introduced in detail, and the application of FLUENT grid technology and numerical technique is introduced. The thermal conductivity, the phase change and the effect of the liquid filling rate on the heat transfer performance of the heat pipe were simulated by using FLUENT of CFD software. The results show that when the liquid filling rate is 20% ∼ 30%, the thermal conductivity of the micro heat pipe starts to rise, reaching 6.11 × 10-5 W · m-2 at the highest level. When the liquid filling rate of 30% to 40%, the thermal conductivity of the micro-heat pipe began to decline, which indicates that the best filling rate is when the liquid filling rate is 20 ∼ 30. When the temperature of the outer wall of the condensation section is 67.5 °C, the maximum heat flux can reach 8.1 × 105 W · m-2.
Solid waste characteristic identification method of imported epoxy resin
Authors: Luo Chuan , Yuan Lifeng , Xu Shanhao , Zhang Yin , Chen TieShan , Chen Yao 
Published: July 2019

Abstract
Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimeter (DSC) and various analytical methods were used to analyze the main components, glass transition temperature (Tg), volatile matter content and ash content of a batch of imported recycled epoxy resin. According to the appearance characteristics and the production process of the sample, the source of the sample was analyzed, Solid waste properties were determined according to the relevant provisions of GB 34330-2017 “Identification standards for solid wastes General rules”. The results show that the samples belong to epoxy resin scap and trim mix manufactured by different production processes for different production purposes, which fall in the category of solid wastes banned by China for import. This identification method provides a reference for the identification and supervision of solid waste derived from imported recycled plastics.
Efficiency Evaluation of Industrial Solid Waste Recycling Utilization Based on Improved DEA Model
Authors: Zhou Jun , Zhang Rong 
Published: July 2019

Abstract
As an industrial power, China has become increasingly problematic in terms of resource consumption and serious environmental pollution. Encouraging the utilization of industrial solid waste resources is a necessary way to achieve economic and environmental sustainability. Based on the new improved DEA model, this paper studies the utilization efficiency and influencing factors of industrial solid waste resource utilization in 31 regions of China in 2017. The research results show that the average efficiency of China’s industrial solid waste resource utilization is at a relatively high level, which is significantly higher than that in 2010; the investment amount of industrial waste treatment in most areas is rationally utilized; nearly half of the areas have excessive storage of industrial solid waste; there is little difference in scale efficiency between the remaining 30 regions except Tibet, but there is a significant difference in pure technical efficiency. Finally, this paper proposes suggestions for improvement from the perspective of coordinating economic, social and environmental sustainability.
Research on Sustainability of Supply Chain Financial Model in Fujian Free Trade Zone
Authors: Wei Liu , qianqian Song 
Published: July 2019

Abstract
Supply chain finance combines logistics, information flow and capital flow, which can effectively solve the shortage of funds and reduce the cost of the entire supply chain. Based on the development background of Fujian province’s free trade zone and supply chain finance, this paper analyzes the current situation of SME financing in China and Fujian province, and focuses on the insufficient industrial chain of supply chain finance in Fujian Free Trade Zone. Supply chain financial intermediaries are unbalanced development, inadequate laws and regulations, and relatively weak technology. The paper proposes a comprehensive model of supply chain financing based on free trade zone, carries out QFLP financing for the real economy, develops supply chain financial services for shipping centers, and encourages intermediaries to develop supply chain financial services, improve credit system and legal system, and utilize blockchain technology to improve the informationization degree of supply chain finance and other proposals, promote the rapid development of supply chain finance in Fujian Free Trade Zone, and solve the financing difficulties of SMEs.
Research on New Materials and Sustainable Development—Taking QTKJ as an Example
Authors: Li Cao 
Published: July 2019

Abstract
Sustainable development is a contemporary world issue, and it is of special importance to a big country like China. The coordination between the development of human civilization and economy and the sustainability of the earth’s natural environment as well as the development of energy and resources is the key to the realization of sustainable development. New materials are the foundation and precursor of national economic and social development. The research and development of new materials can not only meet the growing needs of human beings, but also make various materials meet environmental load requirements and their processing, manufacturing and recycling technologies. As the main force of new material research and development, QTKJ company has made important contributions to the national new material field in the development and research of new materials. Through the analysis of QTKJ company, this paper analyzes and evaluates the existing mechanisms, finds the problems, and proposes corresponding countermeasures for the existing problems. Provide a basis for new material enterprises to optimize their human resources strategy and achieve sustainable development.
On the Existence and Critical Size of Two-dimensional Crystal
Authors: Zeng Kangshi , Xu Zhen , Guo Xinpei , Xiong Tianbai 
Published: July 2019

Abstract
The discovery of graphene strongly contradicts Landau’s viewpoint on the existence of two-dimensional (2D) crystals. In this paper, some clarification on this contradiction by simple analyses are made. Besides, the analytical expressions of 2D crystals’ critical size are derived. The result shows that the maximal size of 2D crystals is governed by out-of-plane vibration of atoms in any temperature. This research is valuable in understanding the stability and existence of 2-D crystals.
A novel energy-saving technology for noise reduction of rotary aerators in sewage treatment plants
Authors: Qiang Ning , Shi Tianzhe , Shi Xianbin , Liu Jing , Liu Tao 
Published: July 2019

Abstract
For oxidation ditch wastewater treatment in the sewage treatment plant, a rotary aerator is often used for aeration. Large noise will be generated during the aeration process, which seriously affects the daily life of nearby residents and workers. This article describes how to reduce noise using the positive and negative pressure difference formed by the rotating brush on both sides and the natural ventilation muffling channel that does not require additional electrical energy in order to replace the traditional closed sound insulation which requires adding a blower to meet the aeration and oxygenation demands. In this way, electrical energy can be saved and noise can be reduced.
Research on Optimization of VR Panorama Acoustic Field acquisition Technology
Authors: Huo Yiwen , Xu Wu , Tao Jing , Li Yilin 
Published: July 2019

Abstract
This paper takes the VR protection of the four seasons production tune of the intangible cultural heritage as an example, aiming at the low matching degree between the ordinary audio frequency acquisition and the actual results in the VR technology. On the basis of head position location based on MEMS and head related transfer function (HRTF), further optimization is carried out. The simulation results show that the acquisition of synthetic information of virtual reality based on MEMS and HRTF has a great positive effect on the protection of the four seasons production tune and the advancement of VR technology.
Research Progress of Polyvinyl Alcohol Foam in Biomedicine
Authors: Zhai Weikun , Wang Yuansheng , Wang Xuan , Wu Qiang , Li Ke 
Published: July 2019

Abstract
Polyvinyl alcohol (PVA) foam has strong water absorption and retention, good biocompatibility and economy, and is environmental friendly. It can be applied to different medical clinical fields by adding modifiers to impart excellent performance. This paper reviews the research progress of PVA foam in biomedicine and introduces the application of PVA foam in negative pressure wound therapy, hemostatic material, cell culture material and cartilage substitute material, and military and civilian integration combing with war wound rescue.
Research on New Sprinkler Heat Insulation System Based on 3D Printing Technology
Authors: Zhou Qipei , Liu Xuetao 
Published: July 2019

Abstract
Firstly, the mechanical structure of the sprinkler is designed by Solidworks in this paper. The wire of the sprinkler is made of waste PET. Then the theoretical feasibility is proved by further simulation analysis with ANSYS software, and the thermodynamic theory of heating and heat dissipation is analyzed and utilized. Finally, the practical operation feasibility of the new 3D printer print nozzle insulation system is verified by physical printing test.
A new view on improving the preparation efficiency of shear thickening fluid
Authors: An Chao , Xiang Changlong , Jia Qingxiu , Wang Fadong 
Published: July 2019

Abstract
In this paper, the relationship of rheological properties, particle size and particle size distribution of dispersed phase silica at different blending times during the preparation of STF was studied in detail. It is found that with the increase of blending time, the initial viscosity η0 of STF decreases, the critical shear rate γ
c increases, the maximum thickening viscosity ηm decreases, the thickening ratio decreases and the shear thickening effect of the system shows a weakening trend. On the other, the volume average particle size of silica decreases gradually and finally reaches a stable value. The particle size distribution changed from double-interval distribution to single-interval distribution. The variation of shear thickening properties with blending time was explained by combining Cluster and Jamming theory. It is considered that the preparation of STF can be completed when the suspension is transparent and has a uniform viscosity. It is believed that this will play an important role in improving the efficiency of STF preparation and will be of great help to realize industrialized production of STF in the future.
Quantitative Analysis of Operating Economical Performance by Valve Leakage in Bypass System
Authors: Zhang Dongxing , Zhao Yuzhu , Wu Zhengfeng , Wu Xi 
Published: July 2019

Abstract
In this paper, the influence of steam leakage of the control valve in bypass system on unit operating economy is analysed. Through quantitative analysis, the formulas for calculating the influence of the steam leakage of control valves in high-pressure, medium-pressure and low-pressure bypass systems on the parameters of unit work and heat absorption are obtained. In the end, combined with the design data, the thermal economy of 1000MW double reheat unit is analyzed in view of the internal leakage of control valve in high-pressure, medium-pressure and low-pressure bypass system.