bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploration and practice of stress-strain evolution law of hydraulic fracturing in coal mine
Authors: Hao Cao , Ying Zhu , Jintao Zhang 
Published: May 2021

Abstract
In order to explore the evolution law of stress and strain in the process of hydraulic fracturing, a hollow inclusions stress-strain gauge was used for monitoring. The results show that the influence range of high-pressure water spreads to the monitoring borehole at 47m after 2 hours of hydraulic fracturing, and its influence on the stress-strain monitoring point reaches the maximum, and the strain tends to be stable in the later stage. After 6 days of hydraulic fracturing, the strain returns to a stable state without any change, but it is still larger than the state before hydraulic fracturing. During hydraulic fracturing, the increment of principal stress increases, but the amplitude is different. Hydraulic fracturing mainly affects the increment of vertical stress, which is related to the stress-strain monitoring point and the space location of the hydraulic fracturing borehole. After hydraulic fracturing, the stress increment decreases gradually and tends to return to the original stable state due to the gradual pressure relief of fracturing fluid, but it is still larger than the state without hydraulic fracturing. Hydraulic fracturing has little effect on the azimuth and dip angle of coal and rock mass. The stress-strain law can provide reference for the exploration of the coal seam permeability increasing mechanism of hydraulic fracturing.
Study on Drainage Technology of Hydraulic Fracturing plus Aggregate Anti-reflection
Authors: Yu Yan , Ma Lei 
Published: May 2021

Abstract
For hydraulic fracturing in the deep geological conditions, crack closure, the present situation of the extraction effect is poor, developed including mixed bone bunker and together with bin, hydraulic fracturing and aggregate equipment, formed the construction technological process, in a typical low permeability coal seam pan three mine of huainan mining area for the practical application, has made significant technical effect: after fracturing of coal seam permeability coefficient increased by 13.31 times, anti-reflection regional standard extraction time is not anti-reflection reduce 26d.
Study on Secondary Grouting Slurry of Closed Cell Perlite for Shield
Authors: Wen Yongxiang , Shang Ningning , Cui Cancan , Kang Shaowei , Zhou Wei , Han Zhongzhi , Guo Xiaojun 
Published: May 2021

Abstract
With high belite cement, sulphoaluminate cement and portland cement cement as cementing materials, closed pore perlite as aggregate and anti-washout admixtures of underwater concrete as additive, the secondary grouting slurry test of expanded perlite suitable for shield grouting was carried out. The test results show that the setting time of secondary grouting slurry of expanded perlite prepared by high belite cement is moderate, which is suitable for secondary grouting slurry preparation; the initial fluidity of slurry prepared by expanded perlite with higher bulk density and the same ratio of cementitious material to aggregate is better, and the fluidity loss is lower; when the ratio of cementitious material to aggregate is between 5:2 And 5:3, the secondary grouting slurry of expanded perlite has better secondary filling effect.
Research on the Application of Environmentally Friendly Packaging Materials in the Sustainable Development of Logistics
Authors: Wang Yingchun , Wang Yuming 
Published: May 2021

Abstract
With the quickening of environmental pollution control in China, the concrete measures of “plastic limit” and “plastic ban” were put forward one after another. At the same time, the Law of the People’s Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste will be formally revised and implemented in September 2020. This fully demonstrates the importance we attach to ecological protection and sustainable development of the environment and our determination to control environmental pollution. At present, with the popularization of e-commerce, the fragmentation of consumption, the penetration of online shopping in rural areas is getting bigger and bigger, and the express delivery industry is showing explosive growth. Especially under the epidemic, consumers’ consumption behaviors and consumption patterns have changed greatly. Network consumption behavior increased significantly, carton, plastic bags and other packaging products demand increased significantly. It consumes a lot of resources, such as paper and plastic products, and also produces a lot of packaging waste. Through the analysis and comparison of several disposable plastic packaging materials in green logistics, the importance of green packaging in green logistics is discussed, which has a strong inspiration for environmental protection and the development of green logistics.
Study on rural domestic sewage treatment scheme
Authors: Wang Tianxiang 
Published: May 2021

Abstract
Under the background of building a beautiful China, rural domestic sewage treatment has attracted much attention. At present, the backward status of rural domestic sewage treatment has become an important factor hindering the sustainable development of agriculture, destroying the rural ecological environment and threatening the health of the masses. In order to promote the construction of ecological civilization, rural domestic sewage treatment needs to be improved. Based on the current situation of rural domestic sewage in China, aiming at the prominent problems existing in the sewage treatment process, this paper explores the treatment scheme, hoping to provide some theoretical support for the related work.
Vulnerability Assessment and Empirical Study of Urban Drainage Network Based on Coupling Analysis
Authors: Yan Chaohua , Chen Weike , Ding Yu 
Published: May 2021

Abstract
The implementation of vulnerability assessment of urban drainage network is of great significance to improve the efficiency of urban waterlogging control. Based on the coupling perspective, the vulnerability assessment index system of urban drainage network is constructed from three dimensions of “exposure-sensitivity-adaptability”. Taking Tianjin as an example, the vulnerability of urban drainage network is empirically analyzed. The results show that reducing the exposure index and improving the sensitivity index and strain capacity of urban drainage network can effectively reduce the vulnerability of urban drainage network; According to the vulnerability of urban drainage networks, targeted prevention and control measures are taken.
Analysis of Environmental Impact Assessment Indexes of Oil and Gas Resources
Authors: Zhang Xingyuan 
Published: May 2021

Abstract
Environmental impact assessment is one of the important tasks that oil companies need to complete in the exploration and development of oil and gas resources. In order to explore the related issues of the environmental impact assessment of oil and gas resources exploration, based on the analytic hierarchy process, the index weights of the environmental impact of oil and gas resources exploration and development are determined, and triangular fuzzy is used. Calculate the environmental impact index value of onshore oil and gas resource exploration and development with the number of language variables, and finally conduct an evaluation analysis through a comprehensive evaluation model, which is conducive to identifying and evaluating the environmental impact of oil and gas resources.
Research on the Status Quo and Optimization Strategy of Indoor Air Quality in Gyms
Authors: Gu Wei , Dong Shihou , Zhang JianYu 
Published: May 2021

Abstract
In order to study the status quo and optimization strategy of indoor air quality in gyms, this paper adopts literature method, expert investigation method, measurement and evaluation method, mathematical statistics method and other methods, and comprehensively uses environmental detection technology to test environmental parameters such as CO2 content, particulate matter and formaldehyde. The research shows that: CO2 concentration, pm10 as the extension of time to change, change of 5 gym indexes were no significant differences (p > 0.05), carbon dioxide concentrations with increased with the extension of the gym business hours, spinning room, three oxygen gym, running room space, carbon dioxide concentrations after using spinning room is 3 times more than before use; Indoor formaldehyde, inhalable particulate matter and other indexes of the five gyms tested met the national standards. The highest formaldehyde concentration was 0.0441%, and the lowest formaldehyde concentration was 0.0233%. The concentration of particulate matter increased with the extension of exercise time, and the value-added rate increased from 75.06 - 97.86 per hour.
Exploration on water environment control scheme of black and odorous water body in Houhai River Basin
Authors: Cheng Zhihua , Zhang Qiong 
Published: May 2021

Abstract
Black smelly water around the economy, society and people’s livelihood development has a very bad influence, seriously affects people’s production and life style, in order to further remove black smelly water bodies, this article takes the water environment treatment scheme of Houhai River in Nanshan District of Shenzhen as an example, this paper considers the treatment of water environment as a whole with systematic thinking. On the basis of in-depth analysis of the sources of pollutants in the basin, the quantitative analysis method of current pollutants in the present situation was established, and a technical route of “pollution control and interception, endogenous treatment, ecological restoration and raising quality of living water” was established according to the quantitative analysis of pollutants. In the process of treatment, the concept of sponge city should be implemented simultaneously; the river ecosystem should be improved by revetment ecological promotion, drainage outlet landscape treatment and so on. The implementation effect evaluated by model showed that all indicators could reach the design goal. The purpose of this paper could provide reference for water environment treatment schemes in other similar areas.
Application of Water Quality Evaluation in the Cotai City Ecological Reserve in Macau: Taking the Single Factor Index Evaluation Method as an Example
Authors: Zhang Junsen 
Published: May 2021

Abstract
This paper uses a single-factor index evaluation method to evaluate the water quality of the Cotai Ecological Reserve in Macau. Water quality evaluation is a necessary way to rationally renovate the water environment. In this paper, the average dissolved oxygen, average total nitrogen, average total phosphorus and BOD5 in the water environment of the ecological protection zone are used as the evaluation indicators of water quality. The analysis results show that the average dissolved oxygen index can maintain the requirements of water function zoning throughout the year. The average total nitrogen and BOD5 index exceeded the standard seriously. Therefore, the water quality index of the ecological zone needs to be improved.
Load forecasting method for park integrated energy system considering process industrial production process
Authors: Feng Yibin , Ni Chouwei , Ma Yuhan , Wang Haojia 
Published: May 2021

Abstract
Aiming at the problem that the current integrated energy load forecasting method does not consider the actual production process and the coupling characteristics between multiple energy carriers, this paper proposes a load forecasting method for park integrated energy system considering process industrial production process. Firstly, taking the battery factory as an example, the production process of typical battery factories is detailed. Secondly, the composition of electricity, heat and cooling load in the battery factory is analyzed respectively, and the corresponding load forecasting model is established. Finally, the applicability and accuracy of the forecasting method proposed in this paper in different situations are analyzed by actual cases. The load forecasting method proposed in this paper fully considers the production process of typical process industry, which can provide an accurate load forecasting basis for energy management and planning of related industries.
Optimal scheduling of multi-park integrated energy system under renewable energy quota considering demand side response
Authors: Wang Wanlong , Liu Tianyu 
Published: May 2021

Abstract
The integrated energy system (RIs) is composed of electricity/gas/cold/heat and other energy sources, which can realize the coordinated utilization of different forms of energy. RIs is conducive to promoting the rational utilization of clean energy, and the mutual coupling between different energy sources can effectively improve the overall energy utilization efficiency and operation economy of the system. The diversity of energy supply and demand makes the system operation complex and diverse, so it is indispensable to optimize the system operation scheduling. Demand response is an effective means to optimize the multi-objective scheduling of regional comprehensive energy system. RPS and green certificate trading mechanism are new methods to promote the consumption of renewable energy. In the process of green certificate trading, considering the load side demand response is conducive to realizing the maximum utilization of renewable energy power generation and improving the absorption rate of renewable energy power generation.
The modal analysis of the GIS pipe shell
Authors: Zhang Huakai , Jian Mingjian , Deng Hualing , Zhang Guangcheng , Zhang Zhongwen , Du Baoshuai , Hao Ya’nan , Chen Yang 
Published: May 2021

Abstract
With the help of modeling by ANSYS and application of finite element method, 3D static analysis of GIS pipe shell, the self-vibration analysis of the whole structure are carried out in this thesis. The basic principles of modal analysis in ANSYS are introduced. After establishing the integral finite element modal considering the self-weight of GIS pipe shell in ANSYS, the structural model analysis is carried, the top 30 order models are obtained, and the former five-order vibration mode are listed in this thesis. The analysis about the free vibration characters of the GIS pipe shell structure shows that the lateral stiffness in two direction of the structure is relatively uniform, and the structure is comparatively regular, with small torsional rigidity. Also it suggests that the stiffness of side force resistance and torsion resisting stiffness should be improved during the design process.
Application of Semi-dry Flue Gas Desulfurization Technology in Circulating Fluidized Bed Boilers
Authors: Zhao Quanzhong , Zhang Zhiyong 
Published: May 2021

Abstract
The application of semi dry desulphurization technology in a circulating fluidized bed boiler is introduced in the paper. The principle and technical characteristics of semi dry desulphurization process are described in detail. The semi dry desulfurization process has certain reference value in the application of circulating fluidized bed boilers.
Analysis of power distribution network operation without power cut based on actual engineering data
Authors: Zhang Geli , Wang Hongjin , Zhang Heng , Zheng Yan , Liu Yaqiong 
Published: May 2021

Abstract
Distribution Network operation without power cut has gradually become the trend of the future distribution network construction, the investment in distribution network has increased year by year, carrying out the study on the analysis of distribution network operation without power cut, analyzing the benefit of distribution network operation without power cut, it is of great significance to provide suggestions for the future distribution network operation cost lean management. Based on the technical analysis of non-outage operation in distribution network, combined with the social benefits of non-outage operation, this paper gives some suggestions on strengthening the management of non-outage operation.
Study on the application of solar power generation in gymnasiums
Authors: Gu Wei , Zhang JianPing , Zhang JianYu 
Published: May 2021

Abstract
To accelerate the promotion of green and low-carbon development, the development of green buildings, new energy development into the “14th Five-Year” planning recommendations, in the global climate change, energy shortage situation, solar power generation as a clean and renewable energy, in today’s society has received more and more attention. Drived by China’s successful hosting of the 29th Summer Olympic Games in 2008 and its bid for the 2022 Winter Olympic Games in 2015, there has been a boom in the construction of sports venues and facilities across the country. Study on the present situation of the application of solar power in the stadium hall has carried on the system analysis and research.
Exploration of the Ability of Fungi for Decomposing Natural Resources Based on Multiple Regression Equation and Cellular Automata
Authors: Shi Yufei , Guan Yijiang , Zhang Dingye 
Published: May 2021

Abstract
With the development of society, carbon emissions are increasing. The key organisms to maintain the stability of the carbon cycle are fungi that can be easily seen and ignored. In this paper, we selected several fungi to establish the model of decomposition and reproduction so that we can understand the role they played. First of all, we studied several physiological indexes of fungi, and established the degradation model through multiple regression analysis, and multiple linear regression equation for the relationship between decomposition rate, growth rate, unit volume density of mycelium, temperature and humidity tolerance. Next, we established the competitive growth model based on logistic model, simulated the competitive growth process of strains with different growth rates, humidity tolerance, and the total decomposition rate. In order to be closer to the real situation, we set up the competitive growth model among four species. By arranging fungal communities randomly to simulate different biodiversity, we analyzed the effects on the decomposition rate in the case of that the environmental temperature and humidity changed by 10% respectively. After that, we established a growth prediction model based on ARIMA. By querying the climate data of five typical climates, we established the competitive growth model with 4 combinations, and we obtained a short-term model, a medium-term trend and a long-tern forecast to describe growth, reproduction and decomposition rate. In order to refine the strains of the pressure of competition and the influence of the distance between the strains of competition, we have established improved competition evolution model based on the cellular automata theory of population. The model helped us comprehend the competition between species on a micro level. All these analyses showed us the significance of biodiversity and the great role decomposers play in Earth.
Borders: An International Comparative Analysis of Social Work’s Response
Authors: Collins Mary Elizabeth , Duffy Joe , Kim Sook Hyun 
Published: May 2021

AbstractBorders play a profound role in human life. In many settings, land borders are highly permeable and provide little barrier to movement, communication and interaction. In other circumstances, borders are highly rigid, difficult to cross and can demarcate vast economic and social disparities. The widely differing circumstances related to border creation and maintenance have deep effects that are worthy of social work attention and engagement. There has been serious attention to issues of globalisation, immigration and human rights in the social work literature. Our focus on borders is related to, but distinct from these issues, and therefore, has something unique to offer. Increased globalisation has led to a major reconceptualisation in our understanding of borders. The COVID-19 epidemic demonstrates the limited relevance of borders in some circumstances (spreading of the virus) but the heightened relevance of borders in other circumstances (travel restrictions). Social work practitioners have a role in framing the understanding of borders and resulting policies. Our focus is to address the question: How has social work engaged with border issues? We examine three international cases and conduct a comparative analysis to examine similarities and differences. From the analysis, we draw conclusions to further understanding for social work.
Topical odour management in burn patients
Authors: Hayashida Kenji , Yamakawa Sho 
Published: May 2021

AbstractPreventing microbial colonization or infections that cause offensive smells may lead to odor reduction. As both anaerobic and aerobic bacteria cause the release of malodor from wounds, the most direct way of avoiding or eliminating wound odor is to prevent or eradicate the responsible infection through the debridement of necrotic tissues. However, some burn patients with malodorous wounds are unable to undergo debridement due to systemic conditions, especially in the acute stage. Moreover, the optimal drug doses and dressings to ensure the efficacy and cost-effectiveness of odorous burn wound management is unclear. The purpose of this commentary is to outline the odor management options available for burn patients, focusing on topical strategies. Numerous potential therapies for treating odorous wounds after burn injuries are suggested.
New Cortical Neurodegenerative Pathways in the Hypertensive Rat Brain
Authors: Moti Ben Shabat , Oz Eliya , Olga Azrilin , Bella Gross , Shifra Sela , Eilam Palzur 
Published: May 2021

Abstract
Hypertension is a risk factor for neurodegenerative diseases. We hypothesized that chronic hypertension underlies neurodegeneration. In this study, we examined the expression of brain cortical proteins involved in homeostasis, apoptosis, and brain functions in Spontaneously Hypertensive Rats (SHR) compared with normotensive Wistar–Kyoto (WKY) rats. We used paraffin-embedded brain sections of 8-month-old SHR and WKY rats, immunohistochemically stained and analyzed by image processing. In SHR, cytochrome c oxidase subunit 7A increased, indicative of hypoxia; heat shock protein 40, the chaperon for refolding proteins, decreased, leading to accumulation of misfolded proteins; the levels of both voltage-gated sodium channels, Na1.2, 1.6, decreased, reflecting attenuation of the action potential, causing axonal injury; autophagy-related protein 4A (Atg4a), an essential protein of autophagy, decreased, reducing the removal of misfolded proteins; demyelination, the hallmark of neurodegeneration, was shown; modulation of both histone deacetylases 2 and histone acetyltransferase 1 was shown, indicative of altered regulation of gene transcription; increased activated (cleaved) caspase-3, indicative of apoptosis. These new findings suggest that chronic hypertension induces hypoxia and oxidative stress, axonal injury, accelerates the accumulation of misfolded proteins and apoptosis, pathways preceding neurodegeneration.