bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Thermal Insulation Composites for Lithium-ion Batteries
Authors: Cheng Chuan’ao , Zang Chongguang , Chen Yijun 
Published: April 2023

AbstractIn this paper, the high-efficiency thermal insulation composites were prepared and investigated, which are formed by the addition of hollow SiO2microspheres, hollow glass microspheres, and hollow phenolic microspheres into addition-type liquid silicone rubber. The thermal conductivity of composites is as low as 0.054 W/(m·K), which is 70.65% lower than the matrix (the thermal conductivity of the matrix is 0.184 W/(m·K)), and the tensile strength is 1.003 Mpa, and the thermal decomposition temperature of the composites is 427 °C .
Research on a Stone Processing Powder Recovery and Reuse Device
Authors: Gao Hua , Yu Aiyue , Lin Shengfeng , Huang Ying , Fu Congchun , Yang Kaihuai 
Published: April 2023

Abstract
This article focuses on a recycling device for powder from stone processing. The device mainly includes three components: a filter device, a rolling device and a gathering device. It could not only perform the filtration, rolling and gathering of stone powder, but also effectively prevent the collected stone powder from accumulating in a single place, and greatly improve the filtration efficiency. The device can be applied in the concrete prepared by artificial sand with distinct advantages in production energy consumption, production cost, and also has a superiority in the development, utilization and application scope of by-products, and recycling of raw materials, At the same time, it can reduce pollution to living environment greatly. The device is simple in structure, practical in use and easy to promote.
External Measurement System for Aircraft Structural Parts Based on Digital Image Correlation in Signal-limited Spaces
Authors: Cai Yusheng , Liu Yayan , Yang Chunxia , Zhu Ke , Liu Wencheng , Huang Jia , Zheng Pei , Zhang Keming 
Published: April 2023

Abstract
An experimental study was performed on the application of the digital image correlation (DIC) technique to characterize aircraft components for which accurate time information is required. This study builds an aircraft external measurement system based on Stereo DIC. This system obtains real-time satellite time information from a GPS clock source and transmits it to a trigger unit. A camera acquires this information and displays it on the image. This solves the problem that some closed laboratories can use only computer time and cannot obtain accurate satellite time when using camera measurements. Moreover, we verify the reliability and accuracy of this approach, finding an average angular accuracy of better than 0.02 degrees and a relative error of less than 1%. Using the binocular Stereo DIC system, the accuracy of the measurements is clarified for specific conditions. Furthermore, we use this system to measure simulated aircraft landing gear, which moves at an angular velocity of 52.4 °/ s over a distance of 5 m with a wide field of view of 16.8°. The satellite time information acquired by the camera and the time information of the captured time targets are highly stable. The system’s reliability is demonstrated for use in practical engineering, contributing to the engineering application of Stereo DIC for external aircraft measurements.
The Effect of Thermal Discharging on the Island Ecosystem in China: Current Knowledge and Future Challenges
Authors: Chen Junhui , Feng Aiping 
Published: April 2023

Abstract
The island ecosystem is composed of the island terrain, island bedrock, tidal flats, and shallow water. With the increasing of power plants along the coastline, the sea water surrounding the islands is warming. It remains a question the relation between the warming water and ecosystem health. In this study we have analysed many practical examples and found that each part of the ecosystem would be affected by the warming water. Currently, the undisclosed interaction mechanism between each part of the ecosystem and the lack of island ecological background data make it hard to assess the impact of thermal discharging quantitatively. The thermal discharge host can either apply for the island use right in warming areas or not based on the current laws in China. But the strict island utilization procedure bans any activity didn’t register in the use right application, which prohibits the flexibility to react to ecological damage in time. There is still a long way to go before the island in the warming waters achieve a balance between island protection and resource utilization.
Coupling Relationship Between Heat Waves and Air Pollution: A Case Study of Central Tianjin
Authors: Jiao Jiao , Chen Tian , Wang Qiao , Zang Xinyu 
Published: April 2023

Abstract
With the increasing contradiction between urban construction and ecological and societal resources, the impact of heat wave and air pollution on cities has become increasingly conspicuous. How to create a comfortable and cool urban environment has become a hot topic that the whole society attaches great importance to. By analyzing the spatio-temporal distribution of heat wave and air pollution, the coupling characteristics of heat wave and air pollution are obtained.
Speciation Analysis of Selenium in Several Different Marine Shellfishes
Authors: Deng Yueping , Huang Le , Liu Chunlan , Sun Yachen , Liu Lihua , Zhuang Min , Zheng Xuehong , Chen Ding 
Published: April 2023

Abstract
In this study, different shellfishes such as Mactra antiquate, Macoma truncata Jonas, Solen Grandis, Dosinorbis japonica, Meretrix meretrix, Sanguinolaria chinenss and Scapharca broughtonii were collected in the Chang-le Mussel resource protection Area, Fujian province. The contents of total selenium, inorganic selenium and organic selenium in different shellfishes were determined by hydride atomic fluorescence spectrometry. The results showed that the selenium contents in study area were in the middle, however, significant differences were found among different shellfishes. The total selenium contents of Solen Grandis was the highest (0.498~0.898 μg g−1), followed by Scapharca broughtonii (0.508 μg g−1) and Sanguinolaria chinenss (0.507 μg g−1). And the inorganic selenium of Scapharca broughtonii was the highest (0.229 μg g−1), followed by Solen Grandis (0.224 μg g−1) and Mactra antiquate (0.125 μg g−1). At most station, the proportion of organic selenium to total selenium in shellfishes was between 54.6% and 89.6%, indicating that organic selenium is the main form.
Drought Risk Assessment in China Based on Water Resources System
Authors: Yuan Zhe , Xu Jijun , Yan Dengming , Yao Liqiang , Sun Keke 
Published: April 2023

Abstract
Based on the risk theory, drought hazard, drought exposure and drought vulnerability were evaluated by precipitation, water consumption and water supply, respectively. A model of drought risk assessment method was thus proposed and it is finally applied in China. The results showed that the drought hazard index in the eastern monsoon region was higher, the drought exposure index in the Yangtze River Economic Belt, north China Plain, Heilongjiang Province, Inner Mongolia Autonomous Region and Xinjiang Autonomous Region was higher, the drought vulnerability in the southern region is higher. The middle and lower reaches of the Yangtze River, north China Plain, southwest China, Heilongjiang province in northeast China and Xinjiang Autonomous Region in northwest China are at high risk of drought.
Research on Energy Saving Technology of Air Energy Heat Pump Constant Temperature System in the Reconstruction of Swimming Pool Project
Authors: Chen Lingling , Dong Ruanjian , Liang Xiaohui 
Published: April 2023

Abstract
With the country’s emphasis on the popularization of compulsory education, many newly built primary and secondary schools have planned and designed swimming pools or swimming pools in recent years. In the process of putting the swimming pool into use, there are many problems, such as short service life and difficult maintenance. There are also some problems in the use of swimming pools, such as high operating cost and high maintenance cost. In this paper, the constant temperature system of air-energy heat pump in the renovation process of swimming pool or swimming pool in primary and secondary schools is studied, and the corresponding energy-saving technical suggestions are put forward to improve the utilization rate of swimming pool in primary and secondary schools.
Calculation of Risk Probability of Levee Landslide Based on Three-dimensional Lequilibrium Theory
Authors: Wang Fei , Zhang Guifang 
Published: April 2023

Abstract
Sliding instability is a common form of failure of embankments, and traditional dike safety evaluation often uses the safety factor value to judge whether it is safe or not. However, due to the uncertainty of the rock and soil characteristics of the embankment, the evaluation results of the safety factor method sometimes fail to reflect the reality, and it is reasonable to use the risk analysis of sliding instability considering these uncertainties. In this paper, the uncertainty of rock and soil strength parameters and the randomness of seepage field are considered, and the risk probability of sliding instability of the embankment is solved by relying on the reliability analysis method. In the reliability analysis, a three-dimensional bin method combining slope stability analysis and gradient optimization method of reliability analysis are proposed, which consider the safety performance, so that the stability evaluation is not too conservative, and the corresponding sliding risk probability can be obtained while obtaining reliable indicators. Finally, the calculation program is prepared for the proposed method, and the proposed method is verified to be reasonable and correct through the example.
Research on the Safety Management Mode of University Biological Laboratory by Strengthen the Cultivation of Independent Safety Awareness
Authors: Sun Liquan 
Published: April 2023

Abstract
College biological laboratory safety is an important part of biological safety. In addition to the safety problems of various reagents and equipment, there are also the protection and waste treatment of various plants, experimental animals, microorganisms and human tissues and organs used in the experiment. In college biological laboratories, the cultivation of independent safety awareness of laboratory personnel is weaker than that of biological enterprises, which leads to two kinds of frequent problem events led by safety protection and waste disposal in college biological laboratories in recent years. Starting from the safety of biological laboratory in Colleges and universities, this paper discusses the laboratory safety protection and waste treatment based on the cultivation of independent safety awareness of laboratory personnel.
Research on Renewal and Sustainable Development of Old Urban Blocks
Authors: Liang Xiaohui , Chen Lingling , Ye Yanbing , Wang Guang , Shen Wenjuan , Wang Yiran 
Published: April 2023

Abstract
From the perspective of urban renewal, this paper takes the old factory area of Liuzhou City as an example, and renovates and develops the old blocks that need to be replaced by functions. This work uses scientific theories to guide the renewal and transformation, and takes the principle of seeking truth from facts and people-oriented as the principle of renewal and transformation, and realizes the transformation and renewal through various means. In addition, the culture of workers has been reshaped, the industrial memory has been revived, and the importance of renovation and sustainable development of old urban districts has been clearly explained, all of which meet the requirements of urban ecology and green, healthy and sustainable development.
Causes of Cold Condensation and Durability Countermeasures of Concrete Structures in Caverns
Authors: Zhang Zhipeng , Peng Yiyang , Fang Xiao’ai , Chen Qi , Gan Weizhong 
Published: April 2023

Abstract
Moisture condensation often occurs in the cave wall in service, which results in the deterioration of the internal environment of the cavern and the decline of its functionality and durability. In this paper, the corrosion mechanism of concrete structure caused by the dew-condensation inside the cavern wall is analyzed, the daily temperature and humidity environment change inside and outside the cavern is measured, the influence of wind speed and ventilation condition on the dew-condensation inside the cavern is discussed, and the change rule of the external atmosphere temperature, the air temperature and humidity inside the cavern wall temperature is discussed. The results show that it is an inevitable physical phenomenon that the internal temperature of the cavern is lower than the dew point temperature, and the measures to deal with cold condensation such as sealing the cave with dry gas when no one is around, filling the cavern with air of appropriate temperature and humidity when there are people, and setting up dehumidification system are effective ways to improve the durability of the concrete structure of the cavern.
Research on Heat and Mass Transfer Performance of Corrugated Coils in Closed Cooling Towers
Authors: Cui Pengfei , Zhou Shuo , Wu Anbing , Geng Man , Luo Hanhua , Li Jianjun 
Published: April 2023

Abstract
According to the characteristics of the flow in the corrugated pipe, Fluent is used to simulate the 3D numerical simulation of the fluid in the corrugated pipe and the ordinary straight pipe by using the RNG k-ε model. Water at a certain temperature is used as the medium. The flow velocity is 0.5 m/s, 0.75 m/s, 1 m/s, 1.25 m/s, 1.5 m/s, in-pipe characteristics with a pipe diameter of 25mm and a pipe length of 1030mm. The simulation adopts the unstructured hexahedral mesh in the simulation, and the SIMPLE algorithm is used for pressure correction; the algebraic equation is iteratively solved by the over-relaxation method. The temperature and velocity at different cross-sections when the flow and heat exchange enter the fully developed stage are obtained through simulation calculation, and they are compared with the related characteristics of flow and heat transfer in the light pipe. The cooling tower of the straight pipe is tested, and the results show that the heat transfer performance of the corrugated pipe is better than that of the ordinary straight pipe.
Study on Energy Storage and Cost Saving Scheme of Traction Substation
Authors: Liu Yujuan , Ding Tao 
Published: April 2023

Abstract
Based on the energy-saving and economical operation requirements of high-speed railways, the traction power supply system adopts large-capacity energy storage devices. The paper takes the measured data of a traction substation as an example to compare the energy-saving effects of the two energy storage schemes and give suggestions.
Land Reclamation and Governance in Dongda Mining Area
Authors: Ma Jian 
Published: April 2023

Abstract
The south areaof Shandong Province is an important base of coal production in China. With the gradual depletion of coal resources, the destruction and abandonment of land in the mining area is very serious, greatly affecting the production and life of people around the mining area. The study of land reclamation and management in mining areas has become extremely urgent. In order to strengthen the reclamation and management of the land in the mining area, this paper, based on the current situation of the surface subsidence and land damage in the mining area of Dongda Coal Mine, and the analysis of the impact on the ecological environment, discusses the methods and measures of land reclamation in the mining area in detail. The findings of the paper will provide important insights into the surface subsidence and land reclamation and management in other mining areas.
Research on the Circulation Strategy of Agricultural Products under Extreme Weather
Authors: Ma Linlin , Chen Zhongye , Li Yanrong 
Published: April 2023

Abstract
The influence of extreme weather on the circulation of agricultural products is mainly reflected in: the contradiction between supply and demand caused by the change of the yield and quality of agricultural products under extreme weather, and the security threat of agricultural products caused by the block of circulation under extreme weather. This paper further analyzes and summarizes three aspects of agricultural products circulation strategies under extreme weather, including: formulating emergency methods for extreme weather agricultural products circulation under extreme value thinking, constructing climate-wise agricultural products circulation system, and improving the agricultural products circulation service system under the national unified market.
Self-sacrifice Stainless Steel Mesh derived FeNi-MOF Materials as Water Splitting Electrocatalyst
Authors: Zhong Li , Wang Ni , Hu Wencheng 
Published: April 2023

Abstract
The oxygen evolution on the anode electrode, the most prominent half-cell reaction all through the water-splitting procedure, is primarily hampered and limited by sluggish dynamics and low reaction efficiency. This work provides an interesting research idea. By utilizing recycled resources as precursors, followed by in-situ hydrothermal method, micron-sized single Metal-organic frameworks (MOF) crystals were rapidly prepared. The as-obtained MOF crystals FeNiBDC exhibited an improving electrocatalytic OER performance with a small overpotential of 334 mV (η10: 10 mA cm−2), a Tafel slope of 100.2 mV dec−1, and a relatively low resistance of 8.13 Ω, compared with the precursor of stainless-steel mesh.
Risk Assessment Model of Carbon Emission Market Trading in Pilot Cities Based on Entropy Weight-TOPSIS Method
Authors: Zhang Fubo , Li Xue , Liang Xiaolong , Li Mingpeng , Ao Jin , Li Qian 
Published: April 2023

Abstract
As an emerging trading mechanism, the carbon market has been widely promoted and paid attention to. On the basis of analyzing the current status of carbon emission market trading in my country’s current pilot cities, this paper considers 12 risk evaluation indicators from four dimensions of external risk, transaction risk, operational risk and management risk, and uses the entropy weight-TOPSIS method to establish a pilot city carbon emissions. Market transaction risk evaluation model, select the pilot city of Guangzhou to carry out empirical analysis. The results show that the operational risk has a greater impact on the pilot cities, and the corresponding risk evaluation indicators should be managed in order to improve my country’s carbon emission market system.
Bacterial Communities Structure and Diversity in Rhizosphere Soil of Dominant Plants in Riparian Wetlands of Reservoir in Zhejiang Province, China
Authors: Chen Haisheng , Chen Taolue , Zhu Zhaoping , Cai Linsheng , Luo Wen , Huang Xiaoyu , Zeng Hongxue , Zhu Youchong 
Published: April 2023

Abstract
Soil bacterial play special roles in the maintenance and stabilization of wetland ecosystem. To investigate bacterial community structure and diversity in rhizosphere soils of four dominant plants in riparian wetlands of mountain reservoir in Zhejiang province, the V4+V5 areas of 16S rDNA gene of bacteria were sequenced and analyzed by the Illumina HiSeq 2500 high-throughput sequencing technology. The results indicated that 27 phylums, 70 classes, 144 orders, 218 families, and 370 genuses of bacteria were achieved, with Proteobacteria, Acidobacteria,Actinobacteria and Bacteroidetes being the dominant phylum and Gammaproteobacteria, Deltaproteobacteria, Acidobacteria, Actinobacteria, Betaproteobacteria and Thermoleophilia being the main class in the soils of riparian wetlands in this areas. The Shannon index and chao1 index of the rhizosphere soil bacteria of Salix babylonica were 8.64 and 585.58, respectively, which were the highest among the four plants, and that of Pterocarya stenoptera were the lowest, with 7.71 and 289.63, respectively. Soil pH, total nitrogen and organic matter were the main factors affecting the soil bacterial community structure in the soil rhizosphere of four dominant plants species in wetlands of riparian zone of reservoir in Zhejiang province.
Defrosting Characteristics of the Cockpit Windshield of Manned Airships
Authors: Wang Yansong , Liu Meinan , Li Yonghao , Kong Benben , Chen Jiamin 
Published: April 2023

Abstract
Frost covering of the cockpit windshield will seriously obstruct the driver’s vision and even affect flight safety of the low-altitude manned airship. To solve the problem, this paper proposes a rapid defrosting strategy using hot gas injection method. The influences of the air inlet type, air temperature, air velocity and air angle on the defrosting characteristics of the transparent windshield are investigated and the defrost characteristics of the manned airship are obtained by fluid dynamics simulation. The result shows: (1) Defrosting effect of single inlet is not as good as double inlets. The defrosting area of the double inlet is relatively large, mainly concentrated at both ends of the windshield. (2) The effect of air supply temperature on defrosting effect of windshield surface is more significant when double air supply inlets are used. But when the air supply temperature reaches a certain value and continues to rise, the defrosting time does not change much, so there is an optimal air supply temperature range. (3) The higher the air supply velocity is, the shorter the phase transformation time of frost layer is and the faster the melting velocity is. Considering energy consumption and defrosting characteristics, the optimal air supply velocity is about 6 m/s. (4) When the angle between the air supply direction and the horizontal plane of the bridge near the windshield is 100°, the frost layer has the shortest melting time.
Techniques of Reservoir Sediment Release and the Application
Authors: Zhou Yinjun , Gao Yu , Fu Jing , Zhou Caijin 
Published: April 2023

Abstract
A series of questions of reservoir sediment deposition have always been a hot issue of common concern. The world has carried out extensive research on it to improve the basin sediment distribution, resource allocation, ecological environment and other issues. The paper summarizes the basic principles of various techniques for reservoir sediment release, and several typical reservoirs at home and abroad have been selected as the case to elaborate that its main measures and effect of the sediment removal. It also makes a comment on the development trend which can be used for the research and practice of the reservoir and lake sedimentation control and restoration.
Analysis on the Characteristics of Climate Change in Erhai Lake from 1956 to 2018
Authors: Shan Yonghua , Xing Jitao , Sun Keke 
Published: April 2023

Abstract
The Erhai Lake in Southwest China is not only an ecologically fragile area but also a vulnerable area from climate change. In order to deal with climate change, the characteristics of precipitation, temperature and evapotranspiration of Erhai Lake were investigated by trend analysis methods, periodicity analysis methods and abrupt change analysis methods. The results showed that: During the period 2006 to 2018, average precipitation and temperature in Dali Station changed by -10% and +0.76°C, respectively, compared with before 2006. It is expected that the variation of precipitation in the future is not significant. However, the trend of temperature change is consistent with the current situation and will show an increasing trend. Under the influence of temperature rise, evapotranspiration showed an obvious increasing trend and it will continue to increase with temperature rise in the future. The primary period for the changes of precipitation, temperature and evapotranspiration were 30a, 20~25a and 10~20a. The abrupt change points of precipitation and temperature were approximately 2005, while the abrupt change point of evapotranspiration in 1980s.