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Building Reconstruction of Historical and Cultural Protection Area Based on Green Technology
Issue:
Volume 9, Issue 5, October 2021
Pages:
206-212
Received:
24 August 2021
Accepted:
11 September 2021
Published:
23 September 2021
Abstract: With the continuous intensification of urban expansion, the transformation and utilization of existing building resources has gradually attracted attention from all walks of life. The Lifen building is the epitome of Wuhan's residential culture for nearly a century. After the baptism of time, the use function and structural safety of the Lifen building can no longer meet people's living needs today. Therefore, further research is needed on how to combine the protection and renovation of the Lifen building. This article takes Kunhouli, Jiang’an District, Wuhan as an example. Through field research and semi-open interviews with local residents, it is found that the current Kunhouli has poor thermal comfort, traffic congestion, outdated infrastructure, and lack of public space. And poor construction quality. According to the regional and cultural characteristics of Lifen, combined with the concept of green building and green analysis software, it is updated and transformed to promote the protection of Lifen while improving the living environment of Lifen, providing reference for the development of Wuhan Lifen's building renovation.
Abstract: With the continuous intensification of urban expansion, the transformation and utilization of existing building resources has gradually attracted attention from all walks of life. The Lifen building is the epitome of Wuhan's residential culture for nearly a century. After the baptism of time, the use function and structural safety of the Lifen buil...
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Study on the Strategy of Enhancing the Spatial Vitality of Streets in Historical Districts - Fengxiang as an Example
Issue:
Volume 9, Issue 5, October 2021
Pages:
213-218
Received:
10 September 2021
Accepted:
29 September 2021
Published:
12 October 2021
Abstract: As the main carrier of the evolution and development of historic districts, streets are the important foundation of street space, architectural texture and neighborhood vitality. However, in recent years, due to the inappropriate way of protecting the historic district and the rapid development of motorization, the spatial quality of the streets in the historic district has been declining and the vitality of the district has suffered a great impact. Located in Fengxiang District of Baoji City, Fengxiang Historic District has insufficient neighborhood vitality and poor spatial quality. In order to improve the vitality of the neighborhood and optimize the spatial quality of the neighborhood, we take "Wenchangxiang-Tongwenxiang-Feltersxiang Historic District" and "Xinzhuangxiang Historic District" in Fengxiang District as examples through a combination of qualitative description and quantitative analysis, and examine the causes of the lack of vitality of the neighborhood in terms of economy, culture and environment. The reasons for the lack of vitality of the neighborhoods are explored from three aspects. Finally, we propose the strategy to improve the vitality of the neighborhoods by upgrading the commercial space and creating diversified business modes, exploring the cultural connotation and forming regional linkage, and optimizing the neighborhood environment and strengthening the neighborhood management.
Abstract: As the main carrier of the evolution and development of historic districts, streets are the important foundation of street space, architectural texture and neighborhood vitality. However, in recent years, due to the inappropriate way of protecting the historic district and the rapid development of motorization, the spatial quality of the streets in...
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Analysis of Mechanical Characteristics of Mountain Highway Section Surface Structure Based on Load
Zhang Zhigang,
Wang Yue,
Wang Wei,
Qiao Jiangang
Issue:
Volume 9, Issue 5, October 2021
Pages:
219-225
Received:
10 September 2021
Accepted:
29 September 2021
Published:
19 October 2021
Abstract: Mountain roads have many kinds of diseases due to their special natural and geographical conditions, and it is difficult to maintain the road surface, so it is particularly important to analyze the causes of the diseases from the theoretical aspect, in order to explore the relationship between structural mechanical characteristics and load of mountain highway pavement, the finite element simulation method was used to study the compressive stress, structural layer displacement, compressive strain, transverse shear stress, longitudinal shear stress, and longitudinal shear of different pavement structure layer depths under load. Change trend of strain. The results show that the compressive stress, longitudinal shear stress, and transverse shear stress are mainly concentrated in the surface layer and have a relatively large impact on the surface layer; the displacement value, compressive strain, and longitudinal shear strain are larger in the surface layer, and the compressive strain and longitudinal shear strain are at the joint Sudden change occurs; as the load increases, the pavement displacement, compressive stress, longitudinal shear stress, compressive strain, longitudinal shear strain, and transverse shear stress of each structural layer gradually increase, the overall structure of the pavement changes, and the probability of road damage increases. It can be seen that the changes in mechanical characteristics of asphalt pavement under different loads and different depths provide a new research idea for mountain highway pavement protection.
Abstract: Mountain roads have many kinds of diseases due to their special natural and geographical conditions, and it is difficult to maintain the road surface, so it is particularly important to analyze the causes of the diseases from the theoretical aspect, in order to explore the relationship between structural mechanical characteristics and load of mount...
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Optimization of Green Infrastructure Network in Fengdong New Town Based on MSPA and MCR Model
Issue:
Volume 9, Issue 5, October 2021
Pages:
226-233
Received:
9 September 2021
Accepted:
14 October 2021
Published:
19 October 2021
Abstract: The concept of life community integrating "mountains, rivers, forests, farmlands, lakes, and grasslands", proposed by the Chinese government, emphasizes the protection and restoration of ecosystem integrity. The construction of green infrastructure (GI) network can connect fragmented habitats, improve landscape connectivity, optimize ecological network, and thus maintain ecological security in the region. In addition, different from the ecological network, the GI network can establish a network structure with composite functions, better enrich regional biodiversity, protect historical and cultural resources, and guide rational development of leisure spaces. Taking Fengdong New Town of Xixianxi district in Xi'an as the research object and aiming at the composite functions of the GI network, this study analyzed the status quo of GI network construction by comprehensively using morphological spatial pattern analysis (MSPA), landscape connectivity analysis, and the minimum cumulative resistance (MCR) model. The following conclusions are drawn: (1) the distribution of green infrastructure in the research area is extremely uneven, the landscape is seriously fragmented, (2) the southern part of the research area has the most core sources and the best connectivity, there is no core source in the middle and east of the site, the connection also is poor, the ecological source distribution in the east and north of the site is more, but the fragmentation is serious and the connectivity is poor. Based on the above analysis results, the Optimization strategies were also proposed for the GI network in the study area, which involved adding more ecological sources and links, strengthening the construction of sites, and improving the integrity of the comprehensive GI network.
Abstract: The concept of life community integrating "mountains, rivers, forests, farmlands, lakes, and grasslands", proposed by the Chinese government, emphasizes the protection and restoration of ecosystem integrity. The construction of green infrastructure (GI) network can connect fragmented habitats, improve landscape connectivity, optimize ecological net...
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On the Research Value of "Food Landscape" Planning in the Process of New Urbanization
Zhao Jie,
Wang Ye,
Wan Xuan
Issue:
Volume 9, Issue 5, October 2021
Pages:
234-238
Received:
9 September 2021
Accepted:
5 October 2021
Published:
19 October 2021
Abstract: With the steady and rapid progress of the new urbanization process, the integration of urban and rural development has also become one of the main tasks of territorial spatial planning. In optimizing urban space governance, the planning and protection of permanent basic farmland for food production is also urgently needed. Our country's grain planting area is huge, and grain production is of strategic significance related to the state's independence and the sustainable and stable development of society. This is clearly reflected in a series of important documents of the Party and the State. Many important social and economic development policies today directly lead to changes in the food landscape paradigm. The food landscape is closely related to the implementation of these economic, social, technological and other aspects of policies and is inseparable. However, it is still rare to consider grain farmland as a landscape for systematic research and planning. Through the definition and classification of food, its strategic significance and the proportion of land area requirements, and the value discussion in the international perspective, this paper preliminarily puts forward the research value and significance of food production as a special landscape planning in territorial spatial planning. Put forward the important reference value of "food landscape" for the formulation and implementation of major national policies in the future, the continuous and in-depth exploration of new urbanization, the promotion of sustainable and coordinated urban and rural development, and the change of people's living and production methods.
Abstract: With the steady and rapid progress of the new urbanization process, the integration of urban and rural development has also become one of the main tasks of territorial spatial planning. In optimizing urban space governance, the planning and protection of permanent basic farmland for food production is also urgently needed. Our country's grain plant...
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A Brief Introduction to Han Fu and Han Dynasty Architectural Culture
Issue:
Volume 9, Issue 5, October 2021
Pages:
239-243
Received:
10 September 2021
Accepted:
8 October 2021
Published:
19 October 2021
Abstract: The Han Dynasty was in the rising stage of China's feudal society, with a strong state, prosperous economy and developed culture. During this period, there were many types of architecture and magnificent scale. Although recorded in historical documents, they are brief and scattered. In comparison, the most perfect display is indeed the Han Dynasty rhetoric. Han Fu is a kind of rhymed prose that emerged in the Han Dynasty, the so-called poetry and song, Fu is an independent genre in traditional Chinese literature. Despite the fact that there is no surviving Han Dynasty architecture, its main features can be glimpsed from the representative works of Han Fu. By virtue of their respective lives, the Hanfuists have truly reproduced the appearance of ancient architecture and revealed its cultural connotations, leaving extremely valuable architectural historical materials for future generations. From the existing Han Dynasty rhetoric, the portrayal of the capital city and its buildings take an important place. The article selects the representative works of capital cities and palaces in the Han fugue as the object of study. Through the depiction of cities and buildings in the fugue, it analyzes the characteristics of city building and architectural style in the Han Dynasty, highlighting the value and significance of architecture in the Han literati.
Abstract: The Han Dynasty was in the rising stage of China's feudal society, with a strong state, prosperous economy and developed culture. During this period, there were many types of architecture and magnificent scale. Although recorded in historical documents, they are brief and scattered. In comparison, the most perfect display is indeed the Han Dynasty ...
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Research on the Evolution and Ptotection of Kulangsu Historic International Settlement Under the Influence of Tourism Development
Issue:
Volume 9, Issue 5, October 2021
Pages:
244-254
Received:
10 September 2021
Accepted:
18 October 2021
Published:
28 October 2021
Abstract: China has a large number of world cultural heritage sites at present. On the one hand, the rise of tourism can promote the regional economic development. On the other hand, excessive commercialization also challenges the authenticity and integrity of heritage sites. Since Kulangsu has developed tourism since the late 1980s, the cultural ecology of the community has long been overwhelmed by the over-exploitation of tourism. Taking advantage of the opportunity of being registered on list of the world cultural heritage as the “ Historic International Settlement” in 2017, meeting the challenges of tourism commercialization and reviving the traditional community has become important issues for Kulangsu in the“ Post-Applying for the Heritage Era”. This paper, taking the Historic International Settlement of Kulangsu as an example, based on historical literature, through analysis, deduction and induction, first sorts out the historical context and unique values from the aspects of historical development, urban structure, and social economy, and then summarizes the four stages of the community’s evolution being influenced by the tourism development, reveals the alienation crisis faced by the community, constructs the development dynamic mechanism of the community. Finally, integrating the value judgment and development dynamic mechanism of Kulangsu, this paper puts forward the future sustainable development strategy of Kulangsu.
Abstract: China has a large number of world cultural heritage sites at present. On the one hand, the rise of tourism can promote the regional economic development. On the other hand, excessive commercialization also challenges the authenticity and integrity of heritage sites. Since Kulangsu has developed tourism since the late 1980s, the cultural ecology of ...
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Advances in Studies on Horizontal Gene Transfer Promoting the Evolution of Resistance Genes of Periodontal Pathogens
Issue:
Volume 9, Issue 5, October 2021
Pages:
255-262
Received:
29 September 2021
Accepted:
25 October 2021
Published:
5 November 2021
Abstract: Horizontal gene transfer (HGT) plays an important role in bacterial evolution. HGT is an important way for bacteria to rapidly obtain genetic improvement. HGT promotes the transmission of biological characteristics such as virulence, antibiotic resistance and allometabolism in microorganisms. The bacteria in the mouth are abundant and abundant. Bacterial virulence gene (Virulence genes, VGs) and antibiotic resistance genes (Antibiotic resistance genes, ARGs) besides through vertical transmission by parental, also can through HGT in oral symbiotic species or genus within the transmission. HGT promotes the spread of virulence genes and resistance genes, becomes an important driving force for the adaptive evolution of oral microorganisms, increases the difficulty of the treatment of oral bacterial infectious diseases (periodontal disease, periradicular lesions, Periimplantitis, etc.), and brings serious harm to human oral health and even general health. With modern microbiology, genetics, molecular biology, the macro development of disciplines, such as genomics, electron microscope and laser confocal microscope, nucleic acid hybridization (especially the 16 sRNA gene sequencing) and other modern analysis technology has been widely applied in periodontal pathogens resistance genes, through the study of HGT way spread and made some progress. This paper will analyze and summarize the literature on the spread of resistance genes of common periodontal pathogens through HGT method in recent years, in order to provide reference for the follow-up study of resistance of periodontal pathogens, as well as for the solution of resistance of periodontal pathogens and the treatment of periodontal diseases.
Abstract: Horizontal gene transfer (HGT) plays an important role in bacterial evolution. HGT is an important way for bacteria to rapidly obtain genetic improvement. HGT promotes the transmission of biological characteristics such as virulence, antibiotic resistance and allometabolism in microorganisms. The bacteria in the mouth are abundant and abundant. Bac...
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Theoretical Study of the Stability and Vibration Spectrum of C38Cl2
Issue:
Volume 9, Issue 5, October 2021
Pages:
263-268
Received:
9 September 2021
Accepted:
28 October 2021
Published:
5 November 2021
Abstract: In this study, the theory of density functional was used to geometrically optimize the binary chlorine-derived isomers of C38 at the b3lyp/6-31g(d) level. Analysis of the reaction heat and HOMO-LUMO of the optimized structure shows that C38Cl2 is thermodynamically stable; The 1-8 added isomer 10-C38Cl2-2-37 and The 1-4 added isomer 17-C38Cl2-12-27 was the most stable among the molecules studied. Derivatization mostly occurs on the carbon atom with the most negative charge, which is generally the common vertex of three five membered rings. Chlorination derivatization reduces the HOMO energy level of the carbon cage, increases the HOMO-LUMO energy level gap of the carbon cage, and reduces the reaction activity of the carbon cage. The vibration frequency calculation shows that the addition mode and symmetry will affect the maximum vibration frequency and intensity of the structure. The strongest vibration is generally C-Cl telescopic vibration. The higher the derived position symmetry, the greater the vibration intensity.
Abstract: In this study, the theory of density functional was used to geometrically optimize the binary chlorine-derived isomers of C38 at the b3lyp/6-31g(d) level. Analysis of the reaction heat and HOMO-LUMO of the optimized structure shows that C38Cl2 is thermodynamically stable; The 1-8 added isomer 10-C38Cl2-2-37 and The 1-4 added isomer 17-C38Cl2-12-27 ...
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