According to the report from the Chinese Center for Disease Control and Prevention,the prevalence of human immunodeficiency virus(HIV)infection exceeded 1.2 million individuals by the year 2022,with an annual increase...According to the report from the Chinese Center for Disease Control and Prevention,the prevalence of human immunodeficiency virus(HIV)infection exceeded 1.2 million individuals by the year 2022,with an annual increase of about 80000 cases.The overall prevalence of hepatitis B surface antigen among individuals co-infected with HIV reached 13.7%,almost twice the rate of the general population in China.In addition to the well-documented susceptibility to opportunistic infections and new malignancies,HIV infected patients frequently experience liver-related organ damage,with the liver and kidneys being the most commonly affected.This often leads to the development of end-stage liver and kidney diseases.Therefore,organ transplantation has emerged as an important part of active treatment for HIV infected patients.However,the curative effect is not satisfactory.HIV infection has been considered a contraindication for organ transplantation.Until the emergence of highly active anti-retroviral therapy in 1996,the once intractable replication of retrovirus was effectively inhibited.With prolonged survival,the failure of important organs has become the main cause of death among HIV patients.Therefore,transplant centers worldwide have resu-med exploration of organ transplantation for HIV-infected individuals and reached a positive conclusion.This study provides an overview of the current landscape of HIV-positive patients receiving liver transplantation(LT)in main-land China.To date,our transplant center has conducted LT for eight end-stage liver disease patients co-infected with HIV,and all but one,who died two months postoperatively due to sepsis and progressive multi-organ failure,have survived.Comparative analysis with hepatitis B virus-infected patients during the same period revealed no statistically significant differences in acute rejection reactions,cytomegalovirus infection,bacteremia,pulmonary infections,acute kidney injury,new-onset cancers,or vascular and biliary complications.展开更多
Objective:To study the characteristics of the clinical application of traditional herbal medicine in five countries and regions where traditional medicine(TM)is widely used:Japan;South Korea;China's Mainland;Hong ...Objective:To study the characteristics of the clinical application of traditional herbal medicine in five countries and regions where traditional medicine(TM)is widely used:Japan;South Korea;China's Mainland;Hong Kong,China;Taiwan,China.And to analyze,from multiple angles,the variations in the methods of TM used in each countries and regions.Methods:Fifty commonly used traditional herbs(TOP50)from classical formulae were selected,and descriptive statistics,correlation analyses,and Friedman test were used to compare methods of clinical application and dosages in the countries and regions of interest based on a retrospective review of randomly-selected medical records.Results:There were significant differences in sequencing TOP50 among the five countries and regions(P<.01).The adherence to the classical formulae,from strong to weak was Japan;China's Mainland;Taiwan,China;Hong Kong,China;South Korea.There were also significant differences in TOP50 dosing regimens(P<.01).Overall dosages of TOP50 from high to low were:China's Mainland;Hong Kong,China;Taiwan,China;South Korea;Japan.Finally,there were significant differences in the dosage intervals(P<.01),with dosage intervals from maximum to minimum as follows:China's Mainland;Taiwan,China;Hong Kong,China;South Korea;Japan.Conclusions:The clinical dosages of traditional herbal medicine used in the China's Mainland are relatively large compared with those prescribed in the other four countries and regions,and the range of dosages in China's Mainland is more flexible.On the other hand,clinical dosages of TOP50 are the lowest in Japan,where the dosage range is also the narrowest,supporting the idea that Doctors of Kampo medicine are highly cautious and are likely to adhere strictly to classical formulae,while Hong Kong,China and Taiwan,China are in the middle.The dosage of TOP50 in South Korea is significantly lower than that used in the China's Mainland;Hong Kong,China and Taiwan,China where the adherence to the classical formulae was the lowest,albeit slightly higher than that in Japan.The methods of clinical application of traditional herbal medicine in the five countries and regions were affected by multiple factors,including history,geography,climate,and culture.展开更多
Background:The number of papers published in the field of nursing practice has greatly increased in recent years in China's Mainland,yet the quality of these papers is highly variable.There has been no attempt to ...Background:The number of papers published in the field of nursing practice has greatly increased in recent years in China's Mainland,yet the quality of these papers is highly variable.There has been no attempt to comprehensively estimate the overall quantity and quality of these papers.Objectives:To systematically retrieve nursing intervention studies published in simplified Chinese from 1979 to 2012,critically appraise their quality,and provide suggestions for future development.Methods:All of the papers were retrieved from China Biology Medicine disc database.The preliminary screening of retrieved publications was performed prior to conducting a rigorous quality evaluation of the remaining publications.10 characteristics would be included in consideration in quality evaluations.Results:69,150 papers were retrieved according to searching strategy.7391 of them were included after preliminary screening and appraised critically.Among the 10 characteristics considered in quality evaluations,the lowest ratings were observed for the factors of“utilisation of blind method”(13 articles),“description of loss of follow-up”(499 articles),“appropriate calculation of sample size”(511 articles)and“randomised assignment of patients to treatments”(652 articles).Conclusions:Chinese papers published in the field of nursing practice have increased over time,but improvements remain needed to ensure that thorough studies with high-quality research methodologies are being performed.Future nursing researchers should not only improve the design of their intervention studies but also clearly describe the methodology they used,especially in group randomisation,blinded research designs,and estimations of required sample sizes.展开更多
Generally speaking, "an economic circle" refers to a group of countriesand regions whose economic relations override the universally accepted in-ternational practice or norms and they have formulated new eco...Generally speaking, "an economic circle" refers to a group of countriesand regions whose economic relations override the universally accepted in-ternational practice or norms and they have formulated new economic ruleswhich are applicable only to countries and regions inside the circle.展开更多
According to the'EY Global IPO Trends:2016 Q2'report released in June,the IPO market in China's Mainland and Hong Kong saw a slow first half in 2016 with investors wary of the economic slowdown of China...According to the'EY Global IPO Trends:2016 Q2'report released in June,the IPO market in China's Mainland and Hong Kong saw a slow first half in 2016 with investors wary of the economic slowdown of China's Mainland’s growth rate and the possibility of a currency devaluation.As a result,the number of deals for the first six months of 2016展开更多
Analysis of recent changes in the amount and nature of cultivated land and grain potential, and the impacts of these changes on grain security in China's Mainland provides vital information for revising and develo...Analysis of recent changes in the amount and nature of cultivated land and grain potential, and the impacts of these changes on grain security in China's Mainland provides vital information for revising and developing strategies regarding protection of cultivated land and national grain security. This study examined changes in the area of cultivated land and in grain potential in agro-ecological zones using the "change rate" method. Agro-ecological subzones were used as the basic units and agro-ecological zones as the research units. We then studied changes for all of China's Mainland using the "gravity centre model" and analyzed the structural change of cultivated lands in each agro-ecological zone to investigate the changes in detail. The results show that both cultivated land and grain potential in China's Mainland decreased from 1996 to 2007. The structural and quantitative changes in each zone have caused the shift of the gravity centres of cultivated land and grain potential in China's Mainland to the northeast. Unfortunately, it is unlikely that natural and economic resources can keep up with this change. Although a large gap remains between the grain potential and the actual grain yield, the rapid loss of grain potential and the direction of change pose great threats to grain security. To ensure comprehensive grain security in China, it is vital to rethink the regional patterns of grain production according to natural conditions without jeopardising cultivated land protection(quantitative and qualitative), and consider the direction of cultivated land use and reconstruction according to local natural conditions, water and soil resources, and the level of economic development, and then work steadily to improve the grain potential.展开更多
The Dongtai Group,a paper maker for40 years,is now an international trans-industrial group,comprising the paperindustry,plastics processing industry,machinemanufacture,hotels,and also securitiescompanies,real estate c...The Dongtai Group,a paper maker for40 years,is now an international trans-industrial group,comprising the paperindustry,plastics processing industry,machinemanufacture,hotels,and also securitiescompanies,real estate companies,investmentcompanies and high-tech industry.It hasestablished more than 20 companies in theUSA,Australia,Japan,Hongkong,Taiwanand China's Mainland. The group opened its first enterpriseon China's Mainland--the Fuda Industry Co.Ltd.in 1989 in Xiamen,with an investmentofUS＄ 6 million.The Fuda Company appliesadvanced international techniques andprocesses to design and produce completesets of equipment for making plastic bags,which are paralleled with those made inEurope,the USA and Japan in quality展开更多
In the context of constant deepening of cooperation in economy and trade and social communication between China's Mainland and Taiwan,deepening the cooperation of credit investigation can effectively ensure deepen...In the context of constant deepening of cooperation in economy and trade and social communication between China's Mainland and Taiwan,deepening the cooperation of credit investigation can effectively ensure deepening and stable development of trade exchanges and social communication between China's Mainland and Taiwan. This paper firstly elaborated significance of credit investigation cooperation,then compared current situation of establishment of credit investigation system,and finally put forward guiding principle and specific recommendations for credit investigation cooperation between China's Mainland and Taiwan.展开更多
Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by De...Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by Deloitte China and CPA Australia’s Hong Kong China division.展开更多
Taiwan and China's Mainland are set to remove or lower tariffs on a range of items,including textile products,as part of a wide-ranging trade agreement agreed on June 14th.Taiwan’s Ministry of Economic
An old Chinese saying goes like 'food is the paramount necessity of the people'.Food safety is always the key element.At the conference of Annual Fresh Food Tender for Hong Kong (2016),Xiaoqun He,deputy dire...An old Chinese saying goes like 'food is the paramount necessity of the people'.Food safety is always the key element.At the conference of Annual Fresh Food Tender for Hong Kong (2016),Xiaoqun He,deputy director of registration department of CNCA(Certification and Accreditation Administration of the People’s展开更多
Air pollution is severe in China, and pollutants such as PM_(2.5) and surface O_3 may cause major damage to human health and crops, respectively. Few studies have considered the health effects of PM_(2.5) or the loss ...Air pollution is severe in China, and pollutants such as PM_(2.5) and surface O_3 may cause major damage to human health and crops, respectively. Few studies have considered the health effects of PM_(2.5) or the loss of crop yields due to surface O_3 using model-simulated air pollution data in China. We used gridded outputs from the WRF-Chem model, high resolution population data, and crop yield data to evaluate the effects on human health and crop yield in China's Mainland. Our results showed that outdoor PM_(2.5) pollution was responsible for 1.70–1.99 million cases of all-cause mortality in 2006. The economic costs of these health effects were estimated to be 151.1–176.9 billion USD, of which 90% were attributed to mortality. The estimated crop yield losses for wheat, rice, maize, and soybean were approximately 9, 4.6, 0.44, and 0.34 million tons, respectively, resulting in economic losses of 3.4 billion USD. The total economic losses due to ambient air pollution were estimated to be 154.5–180.3 billion USD, accounting for approximately 5.7%–6.6% of the total GDP of China in 2006. Our results show that both population health and staple crop yields in China have been significantly affected by exposure to air pollution. Measures should be taken to reduce emissions, improve air quality, and mitigate the economic loss.展开更多
Climatic comfort,which refers to the comfort of the human body's thermal sensations,is important for the human habitat.Although considerable efforts have been provided to examine changes in climatic comfort respon...Climatic comfort,which refers to the comfort of the human body's thermal sensations,is important for the human habitat.Although considerable efforts have been provided to examine changes in climatic comfort response to global warming from a partial perspective,the trajectory shift in past and future climatic comfort conditions in China's mainland based on uniform indicators has not been revealed.The spatiotemporal pattern of climatic comfort over historical and future periods was investigated in this study,using China's mainland as an example.The temperature-humidity index was adopted on the basis of homogenised meteorological station observations and high-resolution climate model simulations to analyse the trends of comfort/discomfort days from 1960 to 2017 and project changes in climatic comfort under representative concentration pathway scenarios in the late 21st century(2071-2100).Results show a substantial decrease in colduncomfortable days and a moderate increase in comfortable and warm-uncomfortable days from 1960 to 2017.In the late 21st century,the signals of increasing warm-uncomfortable and decreasing cold-uncomfortable days are projected to enhance significantly while the direction of changes in comfortable days exhibits a north-south divergence.The uneven changes in warm-and cold-uncomfortable days and an overall decrease in comfortable days in the late 21st century dominate the future trends in climatic comfort in the densely populated southeast half of China.Effective measures taken for adapting to and mitigating global climate warming can considerably avoid the adverse impact of the projected change.展开更多
Land surface temperature(LST)is a key parameter in land surface system.The National Aeronautics and Space Administration(NASA)recently released new Moderate Resolution Imaging Spectroradiometer(MODIS)LST products(MOD2...Land surface temperature(LST)is a key parameter in land surface system.The National Aeronautics and Space Administration(NASA)recently released new Moderate Resolution Imaging Spectroradiometer(MODIS)LST products(MOD21 and MYD21).Here,we conducted a detailed comparison between the MYD11 and MYD21 LST data in China's Mainland.The LSTs of MYD21 were approximately 1℃ higher than those of MYD11 averaged for China's Mainland,as MYD21 corrected the cold bias of MYD11.The proportions of the valid value of MYD21 were generally lower than those of MYD11 because the cloud removal method of MYD21 was stricter than that of MYD11.Furthermore,the outliers were less significant in MYD11 than in MYD21 because the outliers in MYD11 were removed using temporal constraints on LST.The outliers in MYD21A2 resulted in a difference of greater than 3℃ in average seasonal surface urban heat island intensity(SUHII)between MYD11A2 and MYD21A2.Finally,using MYD11 may underestimate the slope of long-term trends of SUHII.MYD21 LST data may have some uncertainties in urban areas.This study provided a reference for users for selecting LST products and for data producers to further improve MODIS LST products.展开更多
Destination familiarity is an important non-economic determinant of tourists’destination choice that has not been adequately studied.This study posits a literary dimension to the concept of destination familiarity—t...Destination familiarity is an important non-economic determinant of tourists’destination choice that has not been adequately studied.This study posits a literary dimension to the concept of destination familiarity—that is,the extent to which tourists have gained familiarity with a given destination through literature—and seeks to investigate the impact of this form of familiarity on inbound tourism to China's Mainland.Employing the English fiction dataset of the Google Books corpus,the New York Times annotated corpus,and the Time magazine corpus,we construct two types of destination familiarity based on literary texts:affectionbased destination familiarity and knowledge-based destination familiarity.The results from dynamic panel estimation(1994–2004)demonstrate that the higher the degree of affection-based destination familiarity with a province in the previous year,the larger the number of inbound tourists the following year.Examining the influence of literature and its consumption on tourism activities sheds light on the dynamics of sustainable tourism development in emerging markets.展开更多
Dissolved organic matter(DOM) plays an essential role in many geochemical processes,however its complexity, chemical diversity, and molecular composition are poorly understood. Soil samples were collected from 500 veg...Dissolved organic matter(DOM) plays an essential role in many geochemical processes,however its complexity, chemical diversity, and molecular composition are poorly understood. Soil samples were collected from 500 vegetable fields in administrative regions of China' Mainland, of which 122 were selected for further investigation. DOM properties were characterized by three-dimensional excitation-emission matrix(3D-EEM) fuorescence spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry(FTICRMS)(field intensity is 15 Tesla). Our results indicated that the main constituents were UVA humic-like substances, humic-like substances, fulvic acid-like substances, and tyrosine-like substances. A total of 10,989 molecular formulae with a mass range of 100.04 to 799.59 Da were detected, covering the mass spectrometric information of the soil samples from 27 different regions. CHO and CHON molecules were dominant in DOM, whereas lignin, tannins,and aromatic substances served as the main components. The results of cluster analysis revealed that the soil properties in Jiangxi Province were considerably different from those in other regions. The key backgrounds of the DOM molecular characteristics in the vegetablefield soil samples across China' Mainland were provided at the molecular level, with large abundance and great variability.展开更多
Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of ...Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of foreign language education poli-cies in Chinese Mainland and the United States in the 21 st century and finds that both China and the United States have regardedtheir national interests as the essential value orientation of their foreign language education policies. To be specific,the core valueorientation of foreign language education policies in China is to enhance its cultural soft power.In contrast,the core value orienta-tion of foreign language education policies in the United States is to safeguard its national security. Through the comparison of thedifferent value orientations of foreign language education policies of the two countries, the paper provides some reference for the for-eign language education policy-making in Chinese Mainland.展开更多
The coronavirus disease 2019(COVID-19)outbreak has been brought under control through a nationwide effort,and now it has become a global pandemic and the situation seems grim.We summarized the measures taken in Wuhan ...The coronavirus disease 2019(COVID-19)outbreak has been brought under control through a nationwide effort,and now it has become a global pandemic and the situation seems grim.We summarized the measures taken in Wuhan and analyzed the effects to comprehensively describe the factors involved in controlling the COVID-19 in China.In China,several measures such as the lockdown of Wuhan,restriction of traffic and communities,increasing hospital beds,nationwide support from medical staff,epidemic prevention equipment and supplies,and establishment of makeshift shelter hospitals have been taken.The lockdown of Wuhan reduced the propagation of cases to other cities in Hubei province and throughout China,traffic and community restrictions reduced the flow of population and the spread of disease,increasing wards and beds and medical personnel reduced the incidence of severe cases and mortality,the establishment of the Fangcang shelter hospitals provided a good isolation and monitoring environment,and further reduced the spread and fatality of the disease.The fact that China was able to control the spread of COVID-19 within three months without a specific drug or vaccine suggests that these measures are more adequate and effective.展开更多
China is a country with a large population as well as frequent landslides. The formation and distribution of landslides in China are determined by its special topography, complex geological environment, active earthqu...China is a country with a large population as well as frequent landslides. The formation and distribution of landslides in China are determined by its special topography, complex geological environment, active earthquake environment and unusual climate features. This paper analyzes the main features and distribution of 200 catastrophic landslides that occurred in China since 1900. The relationships among the distribution of landslides and topographic conditions, geological structure, climate features and strong earthquake environment are analyzed. The features of landslide-triggering factors and critical conditions in different areas have also been considered. Based on the above-mentioned work, the authors have undertaken the studies of landslide susceptibility assessment. The study is performed according to the topographic and geological features, which are the main triggering factors that affect the landslides. The China's Mainland can be divided into 12 zones, including 4 high susceptibility zones, 7 medium susceptibility zones and 1 low susceptibility zone, according to landslide proneness. Considering the number of life loss and extent of property loss caused by landslides in those 12 zones, the risk evaluation results are listed as follows: 2 extremely high-risk zones, 5 high-risk zones, 2 medium-risk zones and 3 low-risk zones. Taking the number of life loss caused by landslides as the standard of risk level, the paper also analyzes the change in landslide risk level and main risk control measures in China since 1990s. Based on the risk level of landslides in other countries or regions, the acceptable landslide risk level in China has been proposed.展开更多
基金Supported by the Shenzhen Science and Technology R&D Fund,No.JCYJ20220530163011026Shenzhen Third People’s Hospital,No.G2022008 and No.G2021008.
文摘According to the report from the Chinese Center for Disease Control and Prevention,the prevalence of human immunodeficiency virus(HIV)infection exceeded 1.2 million individuals by the year 2022,with an annual increase of about 80000 cases.The overall prevalence of hepatitis B surface antigen among individuals co-infected with HIV reached 13.7%,almost twice the rate of the general population in China.In addition to the well-documented susceptibility to opportunistic infections and new malignancies,HIV infected patients frequently experience liver-related organ damage,with the liver and kidneys being the most commonly affected.This often leads to the development of end-stage liver and kidney diseases.Therefore,organ transplantation has emerged as an important part of active treatment for HIV infected patients.However,the curative effect is not satisfactory.HIV infection has been considered a contraindication for organ transplantation.Until the emergence of highly active anti-retroviral therapy in 1996,the once intractable replication of retrovirus was effectively inhibited.With prolonged survival,the failure of important organs has become the main cause of death among HIV patients.Therefore,transplant centers worldwide have resu-med exploration of organ transplantation for HIV-infected individuals and reached a positive conclusion.This study provides an overview of the current landscape of HIV-positive patients receiving liver transplantation(LT)in main-land China.To date,our transplant center has conducted LT for eight end-stage liver disease patients co-infected with HIV,and all but one,who died two months postoperatively due to sepsis and progressive multi-organ failure,have survived.Comparative analysis with hepatitis B virus-infected patients during the same period revealed no statistically significant differences in acute rejection reactions,cytomegalovirus infection,bacteremia,pulmonary infections,acute kidney injury,new-onset cancers,or vascular and biliary complications.
文摘Objective:To study the characteristics of the clinical application of traditional herbal medicine in five countries and regions where traditional medicine(TM)is widely used:Japan;South Korea;China's Mainland;Hong Kong,China;Taiwan,China.And to analyze,from multiple angles,the variations in the methods of TM used in each countries and regions.Methods:Fifty commonly used traditional herbs(TOP50)from classical formulae were selected,and descriptive statistics,correlation analyses,and Friedman test were used to compare methods of clinical application and dosages in the countries and regions of interest based on a retrospective review of randomly-selected medical records.Results:There were significant differences in sequencing TOP50 among the five countries and regions(P<.01).The adherence to the classical formulae,from strong to weak was Japan;China's Mainland;Taiwan,China;Hong Kong,China;South Korea.There were also significant differences in TOP50 dosing regimens(P<.01).Overall dosages of TOP50 from high to low were:China's Mainland;Hong Kong,China;Taiwan,China;South Korea;Japan.Finally,there were significant differences in the dosage intervals(P<.01),with dosage intervals from maximum to minimum as follows:China's Mainland;Taiwan,China;Hong Kong,China;South Korea;Japan.Conclusions:The clinical dosages of traditional herbal medicine used in the China's Mainland are relatively large compared with those prescribed in the other four countries and regions,and the range of dosages in China's Mainland is more flexible.On the other hand,clinical dosages of TOP50 are the lowest in Japan,where the dosage range is also the narrowest,supporting the idea that Doctors of Kampo medicine are highly cautious and are likely to adhere strictly to classical formulae,while Hong Kong,China and Taiwan,China are in the middle.The dosage of TOP50 in South Korea is significantly lower than that used in the China's Mainland;Hong Kong,China and Taiwan,China where the adherence to the classical formulae was the lowest,albeit slightly higher than that in Japan.The methods of clinical application of traditional herbal medicine in the five countries and regions were affected by multiple factors,including history,geography,climate,and culture.
文摘Background:The number of papers published in the field of nursing practice has greatly increased in recent years in China's Mainland,yet the quality of these papers is highly variable.There has been no attempt to comprehensively estimate the overall quantity and quality of these papers.Objectives:To systematically retrieve nursing intervention studies published in simplified Chinese from 1979 to 2012,critically appraise their quality,and provide suggestions for future development.Methods:All of the papers were retrieved from China Biology Medicine disc database.The preliminary screening of retrieved publications was performed prior to conducting a rigorous quality evaluation of the remaining publications.10 characteristics would be included in consideration in quality evaluations.Results:69,150 papers were retrieved according to searching strategy.7391 of them were included after preliminary screening and appraised critically.Among the 10 characteristics considered in quality evaluations,the lowest ratings were observed for the factors of“utilisation of blind method”(13 articles),“description of loss of follow-up”(499 articles),“appropriate calculation of sample size”(511 articles)and“randomised assignment of patients to treatments”(652 articles).Conclusions:Chinese papers published in the field of nursing practice have increased over time,but improvements remain needed to ensure that thorough studies with high-quality research methodologies are being performed.Future nursing researchers should not only improve the design of their intervention studies but also clearly describe the methodology they used,especially in group randomisation,blinded research designs,and estimations of required sample sizes.
文摘Generally speaking, "an economic circle" refers to a group of countriesand regions whose economic relations override the universally accepted in-ternational practice or norms and they have formulated new economic ruleswhich are applicable only to countries and regions inside the circle.
文摘According to the'EY Global IPO Trends:2016 Q2'report released in June,the IPO market in China's Mainland and Hong Kong saw a slow first half in 2016 with investors wary of the economic slowdown of China's Mainland’s growth rate and the possibility of a currency devaluation.As a result,the number of deals for the first six months of 2016
文摘Analysis of recent changes in the amount and nature of cultivated land and grain potential, and the impacts of these changes on grain security in China's Mainland provides vital information for revising and developing strategies regarding protection of cultivated land and national grain security. This study examined changes in the area of cultivated land and in grain potential in agro-ecological zones using the "change rate" method. Agro-ecological subzones were used as the basic units and agro-ecological zones as the research units. We then studied changes for all of China's Mainland using the "gravity centre model" and analyzed the structural change of cultivated lands in each agro-ecological zone to investigate the changes in detail. The results show that both cultivated land and grain potential in China's Mainland decreased from 1996 to 2007. The structural and quantitative changes in each zone have caused the shift of the gravity centres of cultivated land and grain potential in China's Mainland to the northeast. Unfortunately, it is unlikely that natural and economic resources can keep up with this change. Although a large gap remains between the grain potential and the actual grain yield, the rapid loss of grain potential and the direction of change pose great threats to grain security. To ensure comprehensive grain security in China, it is vital to rethink the regional patterns of grain production according to natural conditions without jeopardising cultivated land protection(quantitative and qualitative), and consider the direction of cultivated land use and reconstruction according to local natural conditions, water and soil resources, and the level of economic development, and then work steadily to improve the grain potential.
文摘The Dongtai Group,a paper maker for40 years,is now an international trans-industrial group,comprising the paperindustry,plastics processing industry,machinemanufacture,hotels,and also securitiescompanies,real estate companies,investmentcompanies and high-tech industry.It hasestablished more than 20 companies in theUSA,Australia,Japan,Hongkong,Taiwanand China's Mainland. The group opened its first enterpriseon China's Mainland--the Fuda Industry Co.Ltd.in 1989 in Xiamen,with an investmentofUS＄ 6 million.The Fuda Company appliesadvanced international techniques andprocesses to design and produce completesets of equipment for making plastic bags,which are paralleled with those made inEurope,the USA and Japan in quality
基金Supported by Special Project of Fujian Provincial Department of Finance(K81MLV05A)
文摘In the context of constant deepening of cooperation in economy and trade and social communication between China's Mainland and Taiwan,deepening the cooperation of credit investigation can effectively ensure deepening and stable development of trade exchanges and social communication between China's Mainland and Taiwan. This paper firstly elaborated significance of credit investigation cooperation,then compared current situation of establishment of credit investigation system,and finally put forward guiding principle and specific recommendations for credit investigation cooperation between China's Mainland and Taiwan.
文摘Two surveys conducted in Hong Kong and China's Mainland reveal predictions of a quick recovery ahead for both economies.The surveys were conducted by CPA Australia,with the Hong Kong survey jointly sponsored by Deloitte China and CPA Australia’s Hong Kong China division.
文摘Taiwan and China's Mainland are set to remove or lower tariffs on a range of items,including textile products,as part of a wide-ranging trade agreement agreed on June 14th.Taiwan’s Ministry of Economic
文摘An old Chinese saying goes like 'food is the paramount necessity of the people'.Food safety is always the key element.At the conference of Annual Fresh Food Tender for Hong Kong (2016),Xiaoqun He,deputy director of registration department of CNCA(Certification and Accreditation Administration of the People’s
文摘Air pollution is severe in China, and pollutants such as PM_(2.5) and surface O_3 may cause major damage to human health and crops, respectively. Few studies have considered the health effects of PM_(2.5) or the loss of crop yields due to surface O_3 using model-simulated air pollution data in China. We used gridded outputs from the WRF-Chem model, high resolution population data, and crop yield data to evaluate the effects on human health and crop yield in China's Mainland. Our results showed that outdoor PM_(2.5) pollution was responsible for 1.70–1.99 million cases of all-cause mortality in 2006. The economic costs of these health effects were estimated to be 151.1–176.9 billion USD, of which 90% were attributed to mortality. The estimated crop yield losses for wheat, rice, maize, and soybean were approximately 9, 4.6, 0.44, and 0.34 million tons, respectively, resulting in economic losses of 3.4 billion USD. The total economic losses due to ambient air pollution were estimated to be 154.5–180.3 billion USD, accounting for approximately 5.7%–6.6% of the total GDP of China in 2006. Our results show that both population health and staple crop yields in China have been significantly affected by exposure to air pollution. Measures should be taken to reduce emissions, improve air quality, and mitigate the economic loss.
基金supported by National Key Research and Development Program of China(2018YFA06056032017YFA0603804)National Natural Science Foundation of China(41971072).
文摘Climatic comfort,which refers to the comfort of the human body's thermal sensations,is important for the human habitat.Although considerable efforts have been provided to examine changes in climatic comfort response to global warming from a partial perspective,the trajectory shift in past and future climatic comfort conditions in China's mainland based on uniform indicators has not been revealed.The spatiotemporal pattern of climatic comfort over historical and future periods was investigated in this study,using China's mainland as an example.The temperature-humidity index was adopted on the basis of homogenised meteorological station observations and high-resolution climate model simulations to analyse the trends of comfort/discomfort days from 1960 to 2017 and project changes in climatic comfort under representative concentration pathway scenarios in the late 21st century(2071-2100).Results show a substantial decrease in colduncomfortable days and a moderate increase in comfortable and warm-uncomfortable days from 1960 to 2017.In the late 21st century,the signals of increasing warm-uncomfortable and decreasing cold-uncomfortable days are projected to enhance significantly while the direction of changes in comfortable days exhibits a north-south divergence.The uneven changes in warm-and cold-uncomfortable days and an overall decrease in comfortable days in the late 21st century dominate the future trends in climatic comfort in the densely populated southeast half of China.Effective measures taken for adapting to and mitigating global climate warming can considerably avoid the adverse impact of the projected change.
基金financially supported by the National Natural Science Foundation of China[grant number 41975044],[grant number 41771360],[grant number 41601044],[grant number 41801021],[grant number 41571400]the Special Fund for Basic Scientific Research of Central Colleges,China University of Geosciences,Wuhan[grant number CUGL170401]and[grant number CUGCJ1704].
文摘Land surface temperature(LST)is a key parameter in land surface system.The National Aeronautics and Space Administration(NASA)recently released new Moderate Resolution Imaging Spectroradiometer(MODIS)LST products(MOD21 and MYD21).Here,we conducted a detailed comparison between the MYD11 and MYD21 LST data in China's Mainland.The LSTs of MYD21 were approximately 1℃ higher than those of MYD11 averaged for China's Mainland,as MYD21 corrected the cold bias of MYD11.The proportions of the valid value of MYD21 were generally lower than those of MYD11 because the cloud removal method of MYD21 was stricter than that of MYD11.Furthermore,the outliers were less significant in MYD11 than in MYD21 because the outliers in MYD11 were removed using temporal constraints on LST.The outliers in MYD21A2 resulted in a difference of greater than 3℃ in average seasonal surface urban heat island intensity(SUHII)between MYD11A2 and MYD21A2.Finally,using MYD11 may underestimate the slope of long-term trends of SUHII.MYD21 LST data may have some uncertainties in urban areas.This study provided a reference for users for selecting LST products and for data producers to further improve MODIS LST products.
基金This work was supported in part by the Tsinghua University Initiative Scientific Research Program(No.2019THZWLJ29).
文摘Destination familiarity is an important non-economic determinant of tourists’destination choice that has not been adequately studied.This study posits a literary dimension to the concept of destination familiarity—that is,the extent to which tourists have gained familiarity with a given destination through literature—and seeks to investigate the impact of this form of familiarity on inbound tourism to China's Mainland.Employing the English fiction dataset of the Google Books corpus,the New York Times annotated corpus,and the Time magazine corpus,we construct two types of destination familiarity based on literary texts:affectionbased destination familiarity and knowledge-based destination familiarity.The results from dynamic panel estimation(1994–2004)demonstrate that the higher the degree of affection-based destination familiarity with a province in the previous year,the larger the number of inbound tourists the following year.Examining the influence of literature and its consumption on tourism activities sheds light on the dynamics of sustainable tourism development in emerging markets.
基金supported by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP,No.2019QZKK0304)the Fundamental Research Funds for the Central Universities (No.E2EG0502×2)the Natural Science Foundation Committee of China (No.41991310)。
文摘Dissolved organic matter(DOM) plays an essential role in many geochemical processes,however its complexity, chemical diversity, and molecular composition are poorly understood. Soil samples were collected from 500 vegetable fields in administrative regions of China' Mainland, of which 122 were selected for further investigation. DOM properties were characterized by three-dimensional excitation-emission matrix(3D-EEM) fuorescence spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry(FTICRMS)(field intensity is 15 Tesla). Our results indicated that the main constituents were UVA humic-like substances, humic-like substances, fulvic acid-like substances, and tyrosine-like substances. A total of 10,989 molecular formulae with a mass range of 100.04 to 799.59 Da were detected, covering the mass spectrometric information of the soil samples from 27 different regions. CHO and CHON molecules were dominant in DOM, whereas lignin, tannins,and aromatic substances served as the main components. The results of cluster analysis revealed that the soil properties in Jiangxi Province were considerably different from those in other regions. The key backgrounds of the DOM molecular characteristics in the vegetablefield soil samples across China' Mainland were provided at the molecular level, with large abundance and great variability.
文摘Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of foreign language education poli-cies in Chinese Mainland and the United States in the 21 st century and finds that both China and the United States have regardedtheir national interests as the essential value orientation of their foreign language education policies. To be specific,the core valueorientation of foreign language education policies in China is to enhance its cultural soft power.In contrast,the core value orienta-tion of foreign language education policies in the United States is to safeguard its national security. Through the comparison of thedifferent value orientations of foreign language education policies of the two countries, the paper provides some reference for the for-eign language education policy-making in Chinese Mainland.
文摘The coronavirus disease 2019(COVID-19)outbreak has been brought under control through a nationwide effort,and now it has become a global pandemic and the situation seems grim.We summarized the measures taken in Wuhan and analyzed the effects to comprehensively describe the factors involved in controlling the COVID-19 in China.In China,several measures such as the lockdown of Wuhan,restriction of traffic and communities,increasing hospital beds,nationwide support from medical staff,epidemic prevention equipment and supplies,and establishment of makeshift shelter hospitals have been taken.The lockdown of Wuhan reduced the propagation of cases to other cities in Hubei province and throughout China,traffic and community restrictions reduced the flow of population and the spread of disease,increasing wards and beds and medical personnel reduced the incidence of severe cases and mortality,the establishment of the Fangcang shelter hospitals provided a good isolation and monitoring environment,and further reduced the spread and fatality of the disease.The fact that China was able to control the spread of COVID-19 within three months without a specific drug or vaccine suggests that these measures are more adequate and effective.
基金Supported by the National Basic Research Program ‘‘973’’ Project of China (2008CB425801)the Team Research Fund of State Key Laboratory of Geohazard Prevention and Geoenviroment Protection
文摘China is a country with a large population as well as frequent landslides. The formation and distribution of landslides in China are determined by its special topography, complex geological environment, active earthquake environment and unusual climate features. This paper analyzes the main features and distribution of 200 catastrophic landslides that occurred in China since 1900. The relationships among the distribution of landslides and topographic conditions, geological structure, climate features and strong earthquake environment are analyzed. The features of landslide-triggering factors and critical conditions in different areas have also been considered. Based on the above-mentioned work, the authors have undertaken the studies of landslide susceptibility assessment. The study is performed according to the topographic and geological features, which are the main triggering factors that affect the landslides. The China's Mainland can be divided into 12 zones, including 4 high susceptibility zones, 7 medium susceptibility zones and 1 low susceptibility zone, according to landslide proneness. Considering the number of life loss and extent of property loss caused by landslides in those 12 zones, the risk evaluation results are listed as follows: 2 extremely high-risk zones, 5 high-risk zones, 2 medium-risk zones and 3 low-risk zones. Taking the number of life loss caused by landslides as the standard of risk level, the paper also analyzes the change in landslide risk level and main risk control measures in China since 1990s. Based on the risk level of landslides in other countries or regions, the acceptable landslide risk level in China has been proposed.
