The green development of Chongqing municipality is crucial in establishing a major ecological shield in the upper reaches of the Yangtze River.By developing a Super-SBM model and using the Malmquist index to analyze a...The green development of Chongqing municipality is crucial in establishing a major ecological shield in the upper reaches of the Yangtze River.By developing a Super-SBM model and using the Malmquist index to analyze and calculate the green development efficiency and its influencing factors in Chongqing from 2011 to 2021,this study reveals an accelerating trend in the overall green development efficiency in Chongqing.The significant enhancement of green development efficiency in Chongqing is primarily attributed to changes in returns to scale.Pure technical efficiency and technological advancements have a considerable potential impact on improving green development efficiency in Chongqing.Furthermore,there are discernible disparities in green development efficiency among districts and counties in Chongqing,with different factors influencing these variations.Chongqing is suggested to promote clean and efficient energy utilization,bolster the application and commercialization of scientific and technological advancements,consistently advance ecological restoration and management,and elevate the quality of green development to a higher level.展开更多
In order to investigate the evolutionary characteristics of rural functions and their interaction,37 districts and counties in Chongqing,China are used as research objects to measure the level of rural functions and a...In order to investigate the evolutionary characteristics of rural functions and their interaction,37 districts and counties in Chongqing,China are used as research objects to measure the level of rural functions and analyze the interaction between rural functions using entropy value method and spatial autocorrelation method.The results show that from 2009 to 2019,the three main functions of production,living and ecology in Chongqing’s villages have been greatly enhanced,especially the production function.On the whole,the production and living functions are stronger in the western part,while the ecological functions are significant in the eastern and southern parts of Chongqing,with some differences in local spatial characteristics.This finding is consistent with the regional economic and social development of Chongqing.In addition,the interaction between rural functions is also evident.In general,production and living functions are mainly expressed in synergistic relationships.Ecological and production functions,including ecological and subsistence functions,mainly present a trade-off relationship.The interactions between rural functions also show clear spatial and temporal differences.In addition,different regions have different comparative advantage functions,and in this study,the counties of Chongqing are classified into four types.Policy makers are advised to adopt different measures according to the different types to promote sustainable rural development by coordinating the’production-living-ecological’functions of rural areas.This study reveals the spatio-temporal evolution of rural functions and the interaction between rural functions,which can provide theoretical support and practical reference for rural revitalisation and sustainable development.展开更多
In the twentieth century,the development of Chongqing Municipality was closely related to the development of China as a whole.Under the background of China’s rapid economic development,the construction of large cultu...In the twentieth century,the development of Chongqing Municipality was closely related to the development of China as a whole.Under the background of China’s rapid economic development,the construction of large cultural buildings is often aimed at stimulating economic growth,improving city image and enriching urban culture.Located in the southwest of China,Chongqing Municipality has gradually transformed from an industrial city to an exciting metropolis after a century of development and transformation.Taking Chongqing Grand Theatre and Chongqing Guotai Arts Center as examples,this study explores the interaction between urban development and cultural image enhancement in Chongqing Municipality.展开更多
With the development of society and economy and increasing awareness of people's diet and health care,the demand for waxy corn and its processed products has been rising. At present,the planting of waxy corn in Ch...With the development of society and economy and increasing awareness of people's diet and health care,the demand for waxy corn and its processed products has been rising. At present,the planting of waxy corn in Chongqing is taking shape,but the waxy corn processing is still in the initial stage with smaller enterprise scale and fewer processing product variety. Based on the analysis of the development advantages and disadvantages of waxy corn processing industry in Chongqing,this paper brings forward the development ideas and strategies of Chongqing waxy corn processing industry from three aspects of production,processing and policy.展开更多
With the rapid development of China's modern cities,the scale of urban construction land has experienced dramatic changes.The forecast of urban construction land is the important content of urban construction deve...With the rapid development of China's modern cities,the scale of urban construction land has experienced dramatic changes.The forecast of urban construction land is the important content of urban construction development,and guarantee for healthy,rapid and intensive development of cities,therefore,we must reasonably determine the scale of urban construction land.Based on the status quo of construction land in Chongqing Municipality during the period 2000-2009,this article selects GM(1,1) model,linear model and non-linear model,to forecast the scale of construction land and each type of land subordinate to it in Chongqing Municipality during the period 2010-2014,respectively.The results show that the construction land in Chongqing Municipality will increase substantially during the period 2010-2014,and the area of each type of land subordinate to construction land will also increase to varying degrees,therefore the land contradictions will become more prominent.展开更多
Through investigating types,plant application,slope materials,soil,planting trough,auxiliary climbing facilities,and application of new technologies in vertical planting of urban districts in Chongqing Municipality,ch...Through investigating types,plant application,slope materials,soil,planting trough,auxiliary climbing facilities,and application of new technologies in vertical planting of urban districts in Chongqing Municipality,characteristics and existing problems of its vertical planting were analyzed,and corresponding suggestions given to provide references for vertical planting of mountainous cities.展开更多
Taking Eighteen-Step Ladder in Chongqing Municipality of China for example,physical space forms of street space structure,space hierarchy,street scale,and unit architectural type were elaborated to explore the relatio...Taking Eighteen-Step Ladder in Chongqing Municipality of China for example,physical space forms of street space structure,space hierarchy,street scale,and unit architectural type were elaborated to explore the relation between spatial characteristics and spirit of place of traditional blocks.展开更多
Current situation of road landscaping in old districts of mountainous cities was analyzed,renovation design principles and basis were proposed. Pengshui County in Chongqing was taken for example to explore renovation ...Current situation of road landscaping in old districts of mountainous cities was analyzed,renovation design principles and basis were proposed. Pengshui County in Chongqing was taken for example to explore renovation design methods,overall concepts and relevant contents of the road landscaping in old districts of mountainous cities,so as to provide references for the renovation design of road landscaping in old districts of modern mountainous cities.展开更多
Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and...Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and Three Gorges area. The Three Gorges Dam project, one of the largest world infrastructure projects, causes a great deal of immigration to Chongqing and results in the rapid urbanization of the city, and it has brought in a great deal of environmental impact, which is a global concerned issue. This paper introduces the city profile of Chongqing municipality and its urbanization impact on energy and environment. The demand and the trend of energy consumption in built environment (building and transport) have been analysed. The living environment of Chongqing residents and the local energy efficient policy have been introduced. Finally the authors discuss the key issues of the sustainable urban development of Chongqing.展开更多
With the development of rail transit, transport integrated development(TID) has become a key issue in land development and utilization. This paper analyzed core theories and design principles of TID, analyzed the succ...With the development of rail transit, transport integrated development(TID) has become a key issue in land development and utilization. This paper analyzed core theories and design principles of TID, analyzed the successful experience of Kowloon City in Hong Kong, compared success and failure of some TID projects in Chongqing Municipality, i.e. Nanping, Chaotianmen, Lianglukou and Guanyinqiao, and fully demonstrated that TID could promote the internal update and development of the city. TID concepts for Chongqing were proposed as "rail transit stations should ensure mixed high-benefit land uses with multiple functions, public open spaces with a certain ratio, a high-efficiency pedestrian system with comfortable environment, high-efficiency seamless transfer and connection modes.展开更多
This paper takes metropolitan area of Chongqing Municipality as an example. Chongqing, located at the tail area of the Three Gorges Reservoir, is a typically in-land hilly city in China. A series of serious eco-enviro...This paper takes metropolitan area of Chongqing Municipality as an example. Chongqing, located at the tail area of the Three Gorges Reservoir, is a typically in-land hilly city in China. A series of serious eco-environmental hazard affecting hilly city have appeared: the forest landscape has been fragmented; the stability of ecological system has not been maintained; soil erosion has been serious; geological disasters have become more and more frequented; the phenomenon of city "heat islands" is obvious; and environmental pollution is worsened with low physical self-puri-f ication. All of the hazards above will affect ecological security of the tail area of the Three Gorges Reservoir and sus-tainable development of Chongqing. In order to guarantee ecological security and health of Chongqing and the Three Gorges Reservoir, the countermeasures for ecological infrastructure construction are put forward: quickly drawing up ecological infrastructure planning of Chongqing Municipality, strengthening the integration and continuation of hilly-water spatial pattern, maintaining the diversity and stability of local ecosystem, establishing the green space system in-cluding suburban forest, farmland and green space, recovering wetland ecosystem, optimizing industrial structure and urban spatial distribution, developing recycling economy, establishing ecological infrastructure monitoring network and information forecast system, carrying out ecological management for Chongqing Municipality and so on.展开更多
On February 14,2023,a co-infection of Omicron strains was detected in a sample collected and submitted for examination at the Third Affiliated Hospital of Chongqing Medical University.On February 7,2023,a 67-year-old ...On February 14,2023,a co-infection of Omicron strains was detected in a sample collected and submitted for examination at the Third Affiliated Hospital of Chongqing Medical University.On February 7,2023,a 67-year-old female patient living in Yunyang County,Chongqing City,was identified with a history of malignant tumor that had been treated with chemotherapy,radiotherapy,targeting,and other treatments in the past 6 months.Low immunity was suspected,but no other basic diseases,history of smoking,or drinking habits were present.The patient had received two injections of the coronavirus disease 2019(COVID-19)vaccine(Sinovac Life Sciences Co.Ltd.).展开更多
The literature on urban vitality tends to focus on the built environment.This paper argues that some important processes in shaping vitality may be overlooked without examining the intensity and diversity of economic ...The literature on urban vitality tends to focus on the built environment.This paper argues that some important processes in shaping vitality may be overlooked without examining the intensity and diversity of economic and human activities.Using newly developed spatial big data and adopting the methods of multi-indicator measurement and spatial analysis methods,we analyzed the pattern of urban vitality in Chongqing,a provincial city in western China and,on this basis,evaluated the creation and maintenance of urban vitality from the economic and human activities perspective.Our findings indicate that the impacts of economic and human activities are positive and significant.Among the three intensity and diversity indicators,economic intensity and population density show an effect on urban vitality stronger than that of economic diversity.However,economic diversity has the strongest superposition or interactive effect,and is thus an important foundation dynamic.The positive effect of population density on urban vitality is largely a result of Chongqing’s jobs-housing balance.The case of Chongqing highlights the importance of topographic features,historical inheritance,large-scale migration,and cultural activities in shaping the distinctive vitality pattern of a city.This study contends that the creation and maintenance of urban vitality can not be fully explained without incorporating the impacts of economic and human activities.It contributes to a comprehensive measurement of urban vitality and enriches its connotations.展开更多
This document describes the creation of an informative Web GIS aimed at mitigating the impacts of flooding in the municipality of Ouagadougou, in Burkina Faso, a region that is highly sensitive to climate change. Burk...This document describes the creation of an informative Web GIS aimed at mitigating the impacts of flooding in the municipality of Ouagadougou, in Burkina Faso, a region that is highly sensitive to climate change. Burkina Faso, which is undergoing rapid urbanization, faces major natural threats, particularly flooding, as demonstrated by the severe floods of 2009 that caused loss of life, injury, structural damage and economic losses in Ouagadougou. The aim of this research is to develop a web map highlighting the municipality’s flood-prone areas, with a view to informing and raising awareness of flood risk reduction. Using the Leaflet JavaScript mapping library, the study uses HTML, CSS and JavaScript to implement web mapping technology. Data on Ouagadougou’s flood zones is generated by a multi-criteria analysis combining Saaty’s AHP method and GIS in QGIS, integrating seven (7) parameters including hydrography, altitude, slope, rainfall, soil types, land use and soil moisture index. QGIS processes and maps the themes, PostgreSQL with PostGIS serves as the DBMS and GeoServer functions as the map server. The Web GIS platform allows users to visualize the different flood risks, from very low to very high, or the high-risk areas specific to Ouagadougou. The AHP calculations classify the municipality into five flood vulnerability zones: very low (24.48%), low (27.93%), medium (23.01%), high (17.11%) and very high (7.47%). Effective risk management requires communication and awareness-raising. This online mapping application serves as a tool for communication, management and flood prevention in Ouagadougou, helping to mitigate flood-related natural disasters.展开更多
This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to m...This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to measure the green development level of the new energy vehicle industry in Chongqing,and compared with neighboring provinces such as Yunnan,Guizhou,and Sichuan.Policy recommendations are proposed to promote the development of the new energy vehicle industry in Chongqing City.展开更多
Monkeypox is a zoonotic viral disease caused by the monkeypox virus(MPXV),and historically,all outbreaks have been linked to Africa;however,monkeypox has been posing an alarming challenge to the world in 2022(1)as app...Monkeypox is a zoonotic viral disease caused by the monkeypox virus(MPXV),and historically,all outbreaks have been linked to Africa;however,monkeypox has been posing an alarming challenge to the world in 2022(1)as approximately 60,000 cases have been reported in more than 100 nations and regions worldwide(2).Currently,many cases of monkeypox were identified in many nonendemic countries outside of Central and West Africa,and human-to-human transmission has occurred frequently,especially among men who have sex with men(MSM)presenting new clinical symptoms similar to syphilis and other sexually transmitted infections(3).展开更多
On April 22 and 23,2021,3 confirmed COVID-19 cases in passengers on an arriving airplane from Nepal were reported by Chongqing Public Health Medical Center.Preliminary epidemiological investigation revealed these 3 pa...On April 22 and 23,2021,3 confirmed COVID-19 cases in passengers on an arriving airplane from Nepal were reported by Chongqing Public Health Medical Center.Preliminary epidemiological investigation revealed these 3 patients,males aged 20-30 years,were coworkers of a cellphone company that has a manufacturing base in Noida,India,where they worked with their Indian colleagues since late 2019.展开更多
Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinic...Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinical specimens including skin blister fluid,oropharyngeal and nasopharyngeal swabs,and blood were collected and inoculated onto Vero cells.The isolated virus was identified as MPXV using quantitative polymerase chain reaction(qPCR),cytopathic effects(CPEs),immunofluorescence assay(IFA)and transmission electron microscopy(TEM).Plaque assays were employed to quantify infectious plaque-forming units(PFUs).The plaque reduction neutralization test(PRNT)was developed to determine the neutralizing antibody(nAb)against MPXV.Results:MPXV replication was confirmed with qPCR.Typical CPEs were observed 48 h postincubation.The isolated virus was named MPXV-B.1-China-C-Tan-CQ01.IFA showed that MPXV reacted with serum of MPX case.Orthopoxvirus morphology was observed using TEM.The virus titer increased to>106 PFU/mL after three passages.The serum PRNT 50%neutralization titer(NT50)was 35 for the MPX patient 6 days after symptom onset.Discussion:The study successfully isolated the first MPXV strain in the mainland of China,MPXV-B.1-China-C-Tan-CQ01.Infectious titration and PRNT methods have been developed.The study provides key resources and technical platforms for further research as well as anti-viral drug and vaccine development against MPX.展开更多
Summary What is already known about this topic?Millettia pachycarpa belongs to the Fabaceae family and is widely distributed in the southern China.It is toxic for the rotenone contained in its roots and seeds,and inge...Summary What is already known about this topic?Millettia pachycarpa belongs to the Fabaceae family and is widely distributed in the southern China.It is toxic for the rotenone contained in its roots and seeds,and ingesting its seeds could result in poisoning.What is added by this report?In December,2020,a poisoning from plant seeds occurred in Chongqing Municipality.The etiological association was confirmed based on epidemiological investigation,clinical manifestation.展开更多
Summary What is already known about this topic?Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron subvariant has a stronger transmission capacity and faster transmission speed than the previous strain.
文摘The green development of Chongqing municipality is crucial in establishing a major ecological shield in the upper reaches of the Yangtze River.By developing a Super-SBM model and using the Malmquist index to analyze and calculate the green development efficiency and its influencing factors in Chongqing from 2011 to 2021,this study reveals an accelerating trend in the overall green development efficiency in Chongqing.The significant enhancement of green development efficiency in Chongqing is primarily attributed to changes in returns to scale.Pure technical efficiency and technological advancements have a considerable potential impact on improving green development efficiency in Chongqing.Furthermore,there are discernible disparities in green development efficiency among districts and counties in Chongqing,with different factors influencing these variations.Chongqing is suggested to promote clean and efficient energy utilization,bolster the application and commercialization of scientific and technological advancements,consistently advance ecological restoration and management,and elevate the quality of green development to a higher level.
基金Under the auspices of National Key R&D Program of China(No.2018YFD1100804-03)。
文摘In order to investigate the evolutionary characteristics of rural functions and their interaction,37 districts and counties in Chongqing,China are used as research objects to measure the level of rural functions and analyze the interaction between rural functions using entropy value method and spatial autocorrelation method.The results show that from 2009 to 2019,the three main functions of production,living and ecology in Chongqing’s villages have been greatly enhanced,especially the production function.On the whole,the production and living functions are stronger in the western part,while the ecological functions are significant in the eastern and southern parts of Chongqing,with some differences in local spatial characteristics.This finding is consistent with the regional economic and social development of Chongqing.In addition,the interaction between rural functions is also evident.In general,production and living functions are mainly expressed in synergistic relationships.Ecological and production functions,including ecological and subsistence functions,mainly present a trade-off relationship.The interactions between rural functions also show clear spatial and temporal differences.In addition,different regions have different comparative advantage functions,and in this study,the counties of Chongqing are classified into four types.Policy makers are advised to adopt different measures according to the different types to promote sustainable rural development by coordinating the’production-living-ecological’functions of rural areas.This study reveals the spatio-temporal evolution of rural functions and the interaction between rural functions,which can provide theoretical support and practical reference for rural revitalisation and sustainable development.
文摘In the twentieth century,the development of Chongqing Municipality was closely related to the development of China as a whole.Under the background of China’s rapid economic development,the construction of large cultural buildings is often aimed at stimulating economic growth,improving city image and enriching urban culture.Located in the southwest of China,Chongqing Municipality has gradually transformed from an industrial city to an exciting metropolis after a century of development and transformation.Taking Chongqing Grand Theatre and Chongqing Guotai Arts Center as examples,this study explores the interaction between urban development and cultural image enhancement in Chongqing Municipality.
基金Supported by Science and Technology Service Platform Project of Chongqing Science and Technology Commission(cstc2015ptfw-ggfw80001)Agricultural Development Project of Chongqing Academy of Agricultural Sciences(Research and Demonstration of the Key Technology in Adjusting Corn Planting Structure)Soft Science Project of Jiulongpo District Science and Technology Commission in Chongqing Municipality(Study on the Industrialization Layout and Development Strategy of Grain Reform in Chongqing)
文摘With the development of society and economy and increasing awareness of people's diet and health care,the demand for waxy corn and its processed products has been rising. At present,the planting of waxy corn in Chongqing is taking shape,but the waxy corn processing is still in the initial stage with smaller enterprise scale and fewer processing product variety. Based on the analysis of the development advantages and disadvantages of waxy corn processing industry in Chongqing,this paper brings forward the development ideas and strategies of Chongqing waxy corn processing industry from three aspects of production,processing and policy.
文摘With the rapid development of China's modern cities,the scale of urban construction land has experienced dramatic changes.The forecast of urban construction land is the important content of urban construction development,and guarantee for healthy,rapid and intensive development of cities,therefore,we must reasonably determine the scale of urban construction land.Based on the status quo of construction land in Chongqing Municipality during the period 2000-2009,this article selects GM(1,1) model,linear model and non-linear model,to forecast the scale of construction land and each type of land subordinate to it in Chongqing Municipality during the period 2010-2014,respectively.The results show that the construction land in Chongqing Municipality will increase substantially during the period 2010-2014,and the area of each type of land subordinate to construction land will also increase to varying degrees,therefore the land contradictions will become more prominent.
文摘Through investigating types,plant application,slope materials,soil,planting trough,auxiliary climbing facilities,and application of new technologies in vertical planting of urban districts in Chongqing Municipality,characteristics and existing problems of its vertical planting were analyzed,and corresponding suggestions given to provide references for vertical planting of mountainous cities.
基金Supported by Special Fund of College of Landscape Architecture,Sichuan Agricultural University
文摘Taking Eighteen-Step Ladder in Chongqing Municipality of China for example,physical space forms of street space structure,space hierarchy,street scale,and unit architectural type were elaborated to explore the relation between spatial characteristics and spirit of place of traditional blocks.
文摘Current situation of road landscaping in old districts of mountainous cities was analyzed,renovation design principles and basis were proposed. Pengshui County in Chongqing was taken for example to explore renovation design methods,overall concepts and relevant contents of the road landscaping in old districts of mountainous cities,so as to provide references for the renovation design of road landscaping in old districts of modern mountainous cities.
基金UK FCO GOF(PGI GCC 000012) and Chongqing Small town Programme (CSTC-2004AA7008)
文摘Chongqing is the largest municipality under the Chinese Central Government (MCG) in terms of administrative area and population and is now the most important economic and cultural center of the upper Yangtze River and Three Gorges area. The Three Gorges Dam project, one of the largest world infrastructure projects, causes a great deal of immigration to Chongqing and results in the rapid urbanization of the city, and it has brought in a great deal of environmental impact, which is a global concerned issue. This paper introduces the city profile of Chongqing municipality and its urbanization impact on energy and environment. The demand and the trend of energy consumption in built environment (building and transport) have been analysed. The living environment of Chongqing residents and the local energy efficient policy have been introduced. Finally the authors discuss the key issues of the sustainable urban development of Chongqing.
基金Sponsored by National Natural Science Foundation of China(51408507)China Postdoctoral Science Foundation(2015M570385)
文摘With the development of rail transit, transport integrated development(TID) has become a key issue in land development and utilization. This paper analyzed core theories and design principles of TID, analyzed the successful experience of Kowloon City in Hong Kong, compared success and failure of some TID projects in Chongqing Municipality, i.e. Nanping, Chaotianmen, Lianglukou and Guanyinqiao, and fully demonstrated that TID could promote the internal update and development of the city. TID concepts for Chongqing were proposed as "rail transit stations should ensure mixed high-benefit land uses with multiple functions, public open spaces with a certain ratio, a high-efficiency pedestrian system with comfortable environment, high-efficiency seamless transfer and connection modes.
基金National Natural Sci-ence Foundation of China (Grant No. 40301015)Chongqing Soft Sciences Plan Project (Grant No. CSTC2007CE9023)Science and Technology Project of Chongqing Municipal Education Commis-sion (Grant No. KJ070803)
文摘This paper takes metropolitan area of Chongqing Municipality as an example. Chongqing, located at the tail area of the Three Gorges Reservoir, is a typically in-land hilly city in China. A series of serious eco-environmental hazard affecting hilly city have appeared: the forest landscape has been fragmented; the stability of ecological system has not been maintained; soil erosion has been serious; geological disasters have become more and more frequented; the phenomenon of city "heat islands" is obvious; and environmental pollution is worsened with low physical self-puri-f ication. All of the hazards above will affect ecological security of the tail area of the Three Gorges Reservoir and sus-tainable development of Chongqing. In order to guarantee ecological security and health of Chongqing and the Three Gorges Reservoir, the countermeasures for ecological infrastructure construction are put forward: quickly drawing up ecological infrastructure planning of Chongqing Municipality, strengthening the integration and continuation of hilly-water spatial pattern, maintaining the diversity and stability of local ecosystem, establishing the green space system in-cluding suburban forest, farmland and green space, recovering wetland ecosystem, optimizing industrial structure and urban spatial distribution, developing recycling economy, establishing ecological infrastructure monitoring network and information forecast system, carrying out ecological management for Chongqing Municipality and so on.
基金Supported by the National Natural Science Foundation of Chongqing Project(2022NSCQ-MSX4434).
文摘On February 14,2023,a co-infection of Omicron strains was detected in a sample collected and submitted for examination at the Third Affiliated Hospital of Chongqing Medical University.On February 7,2023,a 67-year-old female patient living in Yunyang County,Chongqing City,was identified with a history of malignant tumor that had been treated with chemotherapy,radiotherapy,targeting,and other treatments in the past 6 months.Low immunity was suspected,but no other basic diseases,history of smoking,or drinking habits were present.The patient had received two injections of the coronavirus disease 2019(COVID-19)vaccine(Sinovac Life Sciences Co.Ltd.).
基金Under the auspices of the National Natural Science Foundation of China(No.42071178,41671139)。
文摘The literature on urban vitality tends to focus on the built environment.This paper argues that some important processes in shaping vitality may be overlooked without examining the intensity and diversity of economic and human activities.Using newly developed spatial big data and adopting the methods of multi-indicator measurement and spatial analysis methods,we analyzed the pattern of urban vitality in Chongqing,a provincial city in western China and,on this basis,evaluated the creation and maintenance of urban vitality from the economic and human activities perspective.Our findings indicate that the impacts of economic and human activities are positive and significant.Among the three intensity and diversity indicators,economic intensity and population density show an effect on urban vitality stronger than that of economic diversity.However,economic diversity has the strongest superposition or interactive effect,and is thus an important foundation dynamic.The positive effect of population density on urban vitality is largely a result of Chongqing’s jobs-housing balance.The case of Chongqing highlights the importance of topographic features,historical inheritance,large-scale migration,and cultural activities in shaping the distinctive vitality pattern of a city.This study contends that the creation and maintenance of urban vitality can not be fully explained without incorporating the impacts of economic and human activities.It contributes to a comprehensive measurement of urban vitality and enriches its connotations.
文摘This document describes the creation of an informative Web GIS aimed at mitigating the impacts of flooding in the municipality of Ouagadougou, in Burkina Faso, a region that is highly sensitive to climate change. Burkina Faso, which is undergoing rapid urbanization, faces major natural threats, particularly flooding, as demonstrated by the severe floods of 2009 that caused loss of life, injury, structural damage and economic losses in Ouagadougou. The aim of this research is to develop a web map highlighting the municipality’s flood-prone areas, with a view to informing and raising awareness of flood risk reduction. Using the Leaflet JavaScript mapping library, the study uses HTML, CSS and JavaScript to implement web mapping technology. Data on Ouagadougou’s flood zones is generated by a multi-criteria analysis combining Saaty’s AHP method and GIS in QGIS, integrating seven (7) parameters including hydrography, altitude, slope, rainfall, soil types, land use and soil moisture index. QGIS processes and maps the themes, PostgreSQL with PostGIS serves as the DBMS and GeoServer functions as the map server. The Web GIS platform allows users to visualize the different flood risks, from very low to very high, or the high-risk areas specific to Ouagadougou. The AHP calculations classify the municipality into five flood vulnerability zones: very low (24.48%), low (27.93%), medium (23.01%), high (17.11%) and very high (7.47%). Effective risk management requires communication and awareness-raising. This online mapping application serves as a tool for communication, management and flood prevention in Ouagadougou, helping to mitigate flood-related natural disasters.
文摘This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to measure the green development level of the new energy vehicle industry in Chongqing,and compared with neighboring provinces such as Yunnan,Guizhou,and Sichuan.Policy recommendations are proposed to promote the development of the new energy vehicle industry in Chongqing City.
文摘Monkeypox is a zoonotic viral disease caused by the monkeypox virus(MPXV),and historically,all outbreaks have been linked to Africa;however,monkeypox has been posing an alarming challenge to the world in 2022(1)as approximately 60,000 cases have been reported in more than 100 nations and regions worldwide(2).Currently,many cases of monkeypox were identified in many nonendemic countries outside of Central and West Africa,and human-to-human transmission has occurred frequently,especially among men who have sex with men(MSM)presenting new clinical symptoms similar to syphilis and other sexually transmitted infections(3).
文摘On April 22 and 23,2021,3 confirmed COVID-19 cases in passengers on an arriving airplane from Nepal were reported by Chongqing Public Health Medical Center.Preliminary epidemiological investigation revealed these 3 patients,males aged 20-30 years,were coworkers of a cellphone company that has a manufacturing base in Noida,India,where they worked with their Indian colleagues since late 2019.
基金Supported by the National Key Research and Development Program of China(2022YFC 2304100,2022YFC2303401,2021YFA1201003,2016YFD0500301,2020YFC0840900,2021YFC 0863300)the Beijing Science and Technology Plan(Z211100002521017,Z211100002521015).
文摘Introduction:The first imported case of monkeypox(MPX)from the mainland of China was reported in September 2022.Herein,the study reports the isolation and characterization of MPX virus(MPXV)in this case.Methods:Clinical specimens including skin blister fluid,oropharyngeal and nasopharyngeal swabs,and blood were collected and inoculated onto Vero cells.The isolated virus was identified as MPXV using quantitative polymerase chain reaction(qPCR),cytopathic effects(CPEs),immunofluorescence assay(IFA)and transmission electron microscopy(TEM).Plaque assays were employed to quantify infectious plaque-forming units(PFUs).The plaque reduction neutralization test(PRNT)was developed to determine the neutralizing antibody(nAb)against MPXV.Results:MPXV replication was confirmed with qPCR.Typical CPEs were observed 48 h postincubation.The isolated virus was named MPXV-B.1-China-C-Tan-CQ01.IFA showed that MPXV reacted with serum of MPX case.Orthopoxvirus morphology was observed using TEM.The virus titer increased to>106 PFU/mL after three passages.The serum PRNT 50%neutralization titer(NT50)was 35 for the MPX patient 6 days after symptom onset.Discussion:The study successfully isolated the first MPXV strain in the mainland of China,MPXV-B.1-China-C-Tan-CQ01.Infectious titration and PRNT methods have been developed.The study provides key resources and technical platforms for further research as well as anti-viral drug and vaccine development against MPX.
文摘Summary What is already known about this topic?Millettia pachycarpa belongs to the Fabaceae family and is widely distributed in the southern China.It is toxic for the rotenone contained in its roots and seeds,and ingesting its seeds could result in poisoning.What is added by this report?In December,2020,a poisoning from plant seeds occurred in Chongqing Municipality.The etiological association was confirmed based on epidemiological investigation,clinical manifestation.
基金Supported by Chongqing Science and Technology Bureau(CSTC2021jscx-gksb-N0005).
文摘Summary What is already known about this topic?Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)Omicron subvariant has a stronger transmission capacity and faster transmission speed than the previous strain.
