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Study on Carbon Storage by CO2 Hydrate Formation in the Ion-Containing Environment
Hui Wang,
Yi Lu,
Xiaoxin Zhang,
Qi Fan,
Qingping Li,
Lunxiang Zhang,
Jiafei Zhao,
Lei Yang,
Yongchen Song
Issue:
Volume 11, Issue 3, June 2023
Pages:
83-89
Received:
6 April 2023
Accepted:
8 May 2023
Published:
18 May 2023
Abstract: The current greenhouse effect caused by massive CO2 accumulation must be addressed urgently. Because of the ocean's enormous capacity, the high density of CO2 hydrate, and the high stability of CO2 sequestration in hydrate form, the process of hydrate generation can trap CO2 molecules into the lattice of water molecules and is considered for the sequestration of CO2 in hydrate form in the ocean. In this paper, molecular dynamics (MD) simulations are used to investigate the kinetic behavior of CO2 hydrate growth in ion-containing electrolyte solutions. The mechanism of salt ion effect on hydrate growth during pressure changes is investigated. The simulations show that in the presence of salt ions, the hydrate growth rate fluctuates significantly, despite the fact that a greater driving force can facilitate the hydrate growth process. Higher pressures increase guest molecule occupancy in the hydrate cage, while the saline environment causes competition for water molecules between the hydrate cage and salt ions, increasing the proportion of empty cages. Lower pressures and the presence of salt ions reduce CO2 molecules' selectivity for the smaller 512 cages, creating a barrier to hydrate growth. The findings of the study look at the microscopic mechanism of CO2 hydrate generation in seawater and serve as a guide for future implementation of hydrate method CO2 sequestration technology in the marine environment.
Abstract: The current greenhouse effect caused by massive CO2 accumulation must be addressed urgently. Because of the ocean's enormous capacity, the high density of CO2 hydrate, and the high stability of CO2 sequestration in hydrate form, the process of hydrate generation can trap CO2 molecules into the lattice of water molecules and is considered for the se...
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Modeling and Simulation of Low Carbon Oriented Machining Centre Machines
Issue:
Volume 11, Issue 3, June 2023
Pages:
90-94
Received:
13 April 2023
Accepted:
13 May 2023
Published:
18 May 2023
Abstract: The whole country is working hard to achieve the goal of carbon peak and carbon neutrality, and carry out energy-saving and emission-reduction measures. In order to realize the low-carbon manufacturing of machine tools, the carbon emissions in the processing process of the machining center are analyzed, the carbon emission boundary and its composition are determined, and the mathematical model of carbon emissions of the machining center is established. The VERICUT software was used to simulate the machining center, and the carbon emission model was verified by orthogonal design by simulating the machining process in the software. The results show that the carbon emission model of the processing center established in this paper has high accuracy, and the error is within 4% compared with the actual processing carbon emission value, indicating that the model can accurately reflect the size of the carbon emission and verify the effectiveness of the model.
Abstract: The whole country is working hard to achieve the goal of carbon peak and carbon neutrality, and carry out energy-saving and emission-reduction measures. In order to realize the low-carbon manufacturing of machine tools, the carbon emissions in the processing process of the machining center are analyzed, the carbon emission boundary and its composit...
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Practice Exploration and Satisfaction Comparison Based on TEPS Clinical Psychological Counseling Talent Training Model
Xie Zhibing,
Zhang Suhui,
Dong Yan,
Zheng Weisi,
Mei Shuqing,
Huang Mingxing
Issue:
Volume 11, Issue 3, June 2023
Pages:
95-99
Received:
24 April 2023
Accepted:
26 May 2023
Published:
29 May 2023
Abstract: With the increasing demand for mental health services in society, due to unclear positioning, inconsistent practice, and imperfect system of clinical psychological counseling professional training, the training of clinical psychological counseling professionals cannot meet the needs of society. In order to improve the training level of clinical psychological counseling, this paper constructs an innovative "TEPS" training model for universities and specialized mental health institutions, which for the first time innovates the internship model, enriches and diversifies practical opportunities, exploits strengths and avoids weaknesses, enhances reputation, and cooperates with medical schools in depth, which not only makes up for the lack of discipline training practice, but also improves the professional practice skills of clinical psychological counseling, and at the same time, 50 psychological interns and trainees from a public psychiatric hospital in Zhuhai, Guangdong Province were selected as research objects by the method of cluster sampling. Questionnaire survey and SPSS analysis were used to compare and analyze the satisfaction survey of students under the model to verify the rationality of the model in talent training. The "TEPS" training model is conducive to linking the training of the discipline with the needs of the profession, so that the overall discipline tends to flourish, but at present, the model also needs to be improved in many aspects.
Abstract: With the increasing demand for mental health services in society, due to unclear positioning, inconsistent practice, and imperfect system of clinical psychological counseling professional training, the training of clinical psychological counseling professionals cannot meet the needs of society. In order to improve the training level of clinical psy...
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Simulation Study on Stability of Half-Through Steel Truss Girder
Guo Xiangren,
Wang Cong,
Zhang Wenbo,
He Honglin,
Han Shoushuai,
Zhao Man
Issue:
Volume 11, Issue 3, June 2023
Pages:
100-106
Received:
2 May 2023
Accepted:
23 May 2023
Published:
29 May 2023
Abstract: In order to discuss and analyze the simplified calculation model and influence factors of external stability of half-through steel truss girder. 56 m half-through railway steel truss girder was set as a study object. Its 3-D whole model was build with finite element software ANSYS. The linear stability coefficient and the buckling mode under different load conditions were analyzed. The results show: The buckling curves under all conditions present as that external buckling of upper chord. According to the structural features and buckling features of half-through steel truss girder, the whole model was simplified as plane model. It was composed of semi-frame and upper chord with lateral elastic bearings, and the calculating steps in external stability analysis are given. On the basis of simple plane model, the parameter effect analysis of external stability of half-through steel truss girder was conducted with finite element method. The influence law of the high, the width of main truss and area of wind brace on lateral displacement of semi-frame, lateral stiffness of upper chord and overall structural stability coefficient. The results show: increasing the high of main truss, decreasing the width of main truss and installing wind brace all can effectively improved stability.
Abstract: In order to discuss and analyze the simplified calculation model and influence factors of external stability of half-through steel truss girder. 56 m half-through railway steel truss girder was set as a study object. Its 3-D whole model was build with finite element software ANSYS. The linear stability coefficient and the buckling mode under differ...
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River Health Evaluation Research on Reach from Shuifumiao to XiangJiang Estuary of LianShui Mainstream
Qiao Qi,
Shi Lin,
Li Daijun,
Zhao Lizi,
Liu Wenbo
Issue:
Volume 11, Issue 3, June 2023
Pages:
107-114
Received:
30 May 2023
Accepted:
30 May 2023
Published:
5 June 2023
Abstract: River health evaluation is an important technical means to evaluate river health status, scientifically analyze River problems and strengthen the implementation of the river chief system. It is an important reference for the river chief to organize and lead the management and protection of rivers. Through scientific, comprehensive and effective investigation, monitoring and research, this paper established the criterion layer from four aspects namely "basin", "water", biology and social service function, selected 18 indexes and established the index layer, constructed the river health evaluation index system by using analytic hierarchy method, and conducted a comprehensive evaluation on reach from Shuifumiao to Xiang Jiang estuary of LianShui mainstream. The evaluation results showed that the grade of the evaluated river was class II, which was generally healthy and basically consistent with the actual situation. The rationality and effectiveness of the evaluation system has been proved. However, it was still weak in terms of river lake connectivity, sediment pollution, biodiversity and flood control compliance rate. The river chief and relevant departments should selectively take measures such as protection, restoration, treatment, control and evaluation to continue improving the environment quality of the river. This paper provided a theoretical reference for river and lake health evaluation work in Hunan Province, and provided a practical path for ecological and civilized development.
Abstract: River health evaluation is an important technical means to evaluate river health status, scientifically analyze River problems and strengthen the implementation of the river chief system. It is an important reference for the river chief to organize and lead the management and protection of rivers. Through scientific, comprehensive and effective inv...
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Measurement of CO2 Diffusion Coefficient in Oil-Saturated Porous Media
Xiaokun Mao,
Yuechao Zhao,
Mingxing Huang,
Yongchen Song
Issue:
Volume 11, Issue 3, June 2023
Pages:
115-120
Received:
1 June 2023
Accepted:
24 May 2023
Published:
5 June 2023
Abstract: The gas-liquid diffusion coefficient is of great significance to accurately evaluate the efficiency of CO2 displacement (CO2-EOR) or the long-term geological storage of CO2. It is necessary to carry out in-depth theoretical and experimental studies on the gas-liquid diffusion mechanism in porous media. Based on low-field nuclear magnetic resonance technology, the diffusion process of CO2 in n-hexadecane saturated porous media was dynamically monitored. The one-dimensional proton density curve of the liquid phase changing with time and position during the diffusion process was obtained by using pure phase coded SE-SPI pulse sequence. The concentration distribution of CO2 in the liquid phase could be obtained according to the relationship between the proton density curve and concentration. Based on Fick's law, a mathematical solution model was established, and the non-iterative finite volume method is used to calculate the CO2 diffusion coefficient that changes with time and position, compared with the pressure attenuation method, the results were in the same order of magnitude and the error was small, which proved the feasibility and accuracy of monitoring gas-liquid diffusion process by low-field nuclear magnetic resonance technology. This provides an in-situ and rapid method for measuring the gas-liquid diffusion coefficient, which is of great significance for the design and economic evaluation of CO2-EOR engineering.
Abstract: The gas-liquid diffusion coefficient is of great significance to accurately evaluate the efficiency of CO2 displacement (CO2-EOR) or the long-term geological storage of CO2. It is necessary to carry out in-depth theoretical and experimental studies on the gas-liquid diffusion mechanism in porous media. Based on low-field nuclear magnetic resonance ...
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Research on Village Planning Strategy in Northern Ecological Conservation Area Under the Background of Rural Revitalization
Zhai Yue,
Huang Xiaohui,
Na Yueqi,
Huang Kai
Issue:
Volume 11, Issue 3, June 2023
Pages:
121-127
Received:
11 May 2023
Accepted:
7 June 2023
Published:
14 June 2023
Abstract: The party's 20th report proposed: "Coordinate the layout of rural infrastructure and public services, and build livable and beautiful villages.” We should give priority to agricultural and rural development and give rural development an important position in socialist modernization. Under the guidance of the rural revitalization strategy of thriving industries, livable ecology, civilized local customs, effective governance and a well-off life, the development policies and upper planning of the governments in urban and towns have been clarified, and the villages in the gully region are developing. Ecological conservation area is an important part of the northwest ecological conservation area in the Beijing-Tianjin-Hebei coordinated development pattern. It is a big oxygen bar of Beijing and a key area to ensure the sustainable development of the capital. This study selection in Beijing yanqing district black han ridge village, in the ecological conservation village in the north under the background of rural revitalization strategy planning strategy, through the analysis of the black distribution of han ridge village industry and village characteristic advantage, the village development opportunities and development problems, and how to rely on the policy background depth mining village window, developing characteristic industry, for the village planning early reference, to provide reference for the subsequent village planning.
Abstract: The party's 20th report proposed: "Coordinate the layout of rural infrastructure and public services, and build livable and beautiful villages.” We should give priority to agricultural and rural development and give rural development an important position in socialist modernization. Under the guidance of the rural revitalization strategy of thrivin...
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Review of Research and Development Trend of Ageing in Residential Areas
Zhang Jin,
Li Bing,
Li Zongjing
Issue:
Volume 11, Issue 3, June 2023
Pages:
128-131
Received:
7 May 2023
Accepted:
19 June 2023
Published:
27 June 2023
Abstract: In recent years, as the problem of population aging has become more and more serious, elderly care service industry has become the focus of the whole society. At present, there are three main models in China: institution for senior care, community-based elderly care and home-based care service. However the most important mode providing for the aged of them is home-based care service, which depends on infrastructure and space supported by the residential area. So the residental area plays an important role in fostering a social environment in which senior citizens are cared for and live happily in their later years. However, most of the existing residential areas are old, with ageing facilities and a lack of attention and research on the physical and mental characteristics and behavioural patterns of the elderly, and therefore cannot meet the needs of the elderly. The need to reasonably renovate existing residential areas and build a living environment suitable for the elderly is a pressing problem in China's urban development, and therefore research on ageing-friendly renovation of residential areas is receiving increasing attention. This paper focuses on the research in this direction. Based on the relevant data on China Knowledge, it starts from the relevant literature on ageing-friendly design and renovation of residential areas at home and abroad, compares the development of ageing-friendly renovation of residential areas at home and abroad, summarises the development trend of ageing-friendly renovation of residential areas in China, reviews the progress and shortcomings of the current research and looks forward to the future development trend, in order to provide some reference for the ageing-friendly renovation and planning of residential areas.
Abstract: In recent years, as the problem of population aging has become more and more serious, elderly care service industry has become the focus of the whole society. At present, there are three main models in China: institution for senior care, community-based elderly care and home-based care service. However the most important mode providing for the aged...
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Study of the Composition and Evolution of the Urban Form of Cannes
Li Zongjing,
Li Bing,
Zhang Jin
Issue:
Volume 11, Issue 3, June 2023
Pages:
132-137
Received:
7 May 2023
Accepted:
19 June 2023
Published:
27 June 2023
Abstract: As a complex system of nature and man-made, the spatial form of the city has an inherent law and evolutionary mechanism. The urban morphology of Cannes has changed dramatically from its initial development as a small fishing village to the present. In this paper, the urban morphology of Cannes, France, is studied from the perspective of urban typology, combined with the methods of documentation and historical map analysis. Firstly, the city functions and economic and social development are taken as clues, and three main urban development stages are identified, namely "fishing village", "aristocratic resort city" and "landscape tourism city". The city of Cannes has gone through three main stages of development, namely "fishing village", "noble resort city" and "landscape tourist city". On this basis, the article analyzes the characteristics and driving forces of Cannes' urban development, namely, the city's origins in religious and military activities, its development due to the impetus of European aristocrats who came to the city, and its eventual prosperity due to the good development of the transportation industry. With the help of satellite maps and historical maps, the article summarizes and analyzes the evolution of each urban morphological element, such as city boundaries, roads, street forms and property plots, and discusses the characteristics of the urban morphological composition of Cannes and the forces at work.
Abstract: As a complex system of nature and man-made, the spatial form of the city has an inherent law and evolutionary mechanism. The urban morphology of Cannes has changed dramatically from its initial development as a small fishing village to the present. In this paper, the urban morphology of Cannes, France, is studied from the perspective of urban typol...
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