EDITOR’S NOTE: It has been 40 years since the Democratic Reformabolishing feudal serfdom in Tibet was carried out in 1959. What haschanged, especially in the past 20 years of the reform and opening proqram introduced...EDITOR’S NOTE: It has been 40 years since the Democratic Reformabolishing feudal serfdom in Tibet was carried out in 1959. What haschanged, especially in the past 20 years of the reform and opening proqram introduced nationwide by the Central Government? A recent surveyof rural areas Provides an answer to this question.展开更多
The popular Chinese saying'time flies like arrow'best reflects my four-decade association with China and my China studies.More interestingly,this is also the period of socialist China’s successful trajectory ...The popular Chinese saying'time flies like arrow'best reflects my four-decade association with China and my China studies.More interestingly,this is also the period of socialist China’s successful trajectory of economic growth and social transformation.This remarkable Chinese success under the ongoing reform and opening-up policy started40 years ago.I often tell my Indian students and friends from China展开更多
AN 80-year old woman, who was recovering from a bone injury, once told me that she would be traveling around the world for the rest of her life. Listening to her touching and admirable plan, I realized that the loss o...AN 80-year old woman, who was recovering from a bone injury, once told me that she would be traveling around the world for the rest of her life. Listening to her touching and admirable plan, I realized that the loss of one’s ability to do a certain thing will cultivate a longing for that particular thing. This longing was also with me the year I became 40. At that time, I frequently thought back over all l had done during the past 40 years,展开更多
<strong>Objective:</strong> The purpose of this work was to determine the epidemiological, clinical and evolutionary aspects of the pulmonary embolism of the young person in the cardiology department of th...<strong>Objective:</strong> The purpose of this work was to determine the epidemiological, clinical and evolutionary aspects of the pulmonary embolism of the young person in the cardiology department of the University Hospital Center (CHU) Point G in Bamako-Mali. <strong>Methodology:</strong> This was an analytical study from January 01, 2018 to December 31, 2018 in the CHU Point G cardiology department, including all patients hospitalized during this period. <strong>Results:</strong> Of 1379 hospitalized patients, 19 patients were concerned by pulmonary embolism of the young person. The prevalence of pulmonary embolism of the young person was 1.37%. The most affected age group was 21 - 30 (47.4%) of patients. The predominance was female (89.47%) with a gender ratio of 0.11 in favour of women. The average age in the series was 29.79 years with extremes of 16 years and 40 years. Factors predisposing to pulmonary embolism were dominated by peri partum, cardiomyopathy and obesity with 47.3%, 31.57% and 21.1%, respectively. The dominant signs were chest pain and dyspnea in 94.7% and 89.5% of cases respectively. Pulmonary embolism was unlikely in 60.52% according to the Geneva and Wells score simplified. At the thoracic angioscanner, the embolism was bilateral in 52.6% of cases and distal in 36.8% of patients;in 10 patients who performed cardiac ultrasound, pulmonary arterial hypertension (70%), dilation of the right ventricle (20%) and left ventricular dilation (40%). Hyper leucocytosis (47.4%), anemia and low prothrombin rate (TP) (22.2%) were the most found biological abnormalities. More than 2/3 (68.5%) our patients had an intermediate mortality risk according to the PESI (Pulmonary Embolism Severity Index) score. The average hospital stay was 10 days. Hospital mortality was 10.5%. <strong>Conclusion:</strong> The pulmonary embolism of the young person is a frequent, serious and multifactorial pathology and the female sex is most affected especially during peri partum periods, hence the need for preventive measures. Clinical signs are not specific and based on the assessment of clinical probability. Pulmonary angioscanner remains the confirmation review in our context.展开更多
International exchange is an important part of China’s educational opening up,cooperation,and connection with other countries.It also serves as a unique strategic resource,helping to develop and consolidate mutual po...International exchange is an important part of China’s educational opening up,cooperation,and connection with other countries.It also serves as a unique strategic resource,helping to develop and consolidate mutual political trust,diplomatic exchange,economic and trade relations,cultural exchange and educational cooperation between China and other countries in the world,thereby enhancing China’s international image.We have seen positive contributions made to our progress towards peace among peoples,and noted the irreplaceable role played by China.International educational exchange is an important part of global international student flows.Since the founding of the People’s Republic of China,especially in the 40 years of reform and opening up,China has experienced a development process in education from language students to students at all levels and from quantity to quality.The change in the type of international students studying in China and of Chinese students studying abroad reflects the Chinese spirit and the broadening the appeal of China’s programs.It can be interpreted as the fulfillment of the“Chinese Dream,”contributing to national revitalization.The trade imbalance between exporting countries and destination countries in international educational exchange has been reduced.展开更多
Understanding wetland change is critical to establishing and implementing international conservation and management conventions.With such knowledge,supporting sustainable development,making management decisions,improv...Understanding wetland change is critical to establishing and implementing international conservation and management conventions.With such knowledge,supporting sustainable development,making management decisions,improving policies,and conducting scientific research become possible.However,consistent information on changes in Chinese wetlands has been unavailable.We applied the hybrid object-based and hierarchical classification approach to∼53,000 scenes of Landsat images acquired between 1980 and 2020 and created a national wetland mapping product(China_Wetlands)for six periods(e.g.,1980,1990,2000,2010,2015,and 2020).China_Wetlands revealed diverse changes in Chinese wetlands and their trajectories in response to climate change and human impacts over the past four decades.Specifically,there was a substantial shrinkage in wetland area before 2015,with a small rebound between 2015 and 2020.The net loss was∼60.9×10^(3)km^(2),which represents 12%of the area in 1980.However,the loss of natural wetlands was hidden by human-made wetland gain with an offset of 15.6×10^(3)km^(2).Additionally,the expansion of surface water extent approximately 14.0×10^(3)km^(2)obscured the loss of vegetated wetlands.Wetland loss in hotspot areas(e.g.,Sanjiang Plain and Yangtze River Delta)should not be neglected.The sustainable management and effective conservation of wetlands in China should target wetland areas,landscape structures,and small wetlands delivering important ecosystem services.Moreover,the conversion of wetland types and the invasion of alien species need to be monitored and regulated.China_Wetlands will be a critical wetland dataset for ecological research and the assessment of national and global environmental objectives(e.g.,the United Nation’s sustainable development goals).展开更多
文摘EDITOR’S NOTE: It has been 40 years since the Democratic Reformabolishing feudal serfdom in Tibet was carried out in 1959. What haschanged, especially in the past 20 years of the reform and opening proqram introduced nationwide by the Central Government? A recent surveyof rural areas Provides an answer to this question.
文摘The popular Chinese saying'time flies like arrow'best reflects my four-decade association with China and my China studies.More interestingly,this is also the period of socialist China’s successful trajectory of economic growth and social transformation.This remarkable Chinese success under the ongoing reform and opening-up policy started40 years ago.I often tell my Indian students and friends from China
文摘AN 80-year old woman, who was recovering from a bone injury, once told me that she would be traveling around the world for the rest of her life. Listening to her touching and admirable plan, I realized that the loss of one’s ability to do a certain thing will cultivate a longing for that particular thing. This longing was also with me the year I became 40. At that time, I frequently thought back over all l had done during the past 40 years,
文摘<strong>Objective:</strong> The purpose of this work was to determine the epidemiological, clinical and evolutionary aspects of the pulmonary embolism of the young person in the cardiology department of the University Hospital Center (CHU) Point G in Bamako-Mali. <strong>Methodology:</strong> This was an analytical study from January 01, 2018 to December 31, 2018 in the CHU Point G cardiology department, including all patients hospitalized during this period. <strong>Results:</strong> Of 1379 hospitalized patients, 19 patients were concerned by pulmonary embolism of the young person. The prevalence of pulmonary embolism of the young person was 1.37%. The most affected age group was 21 - 30 (47.4%) of patients. The predominance was female (89.47%) with a gender ratio of 0.11 in favour of women. The average age in the series was 29.79 years with extremes of 16 years and 40 years. Factors predisposing to pulmonary embolism were dominated by peri partum, cardiomyopathy and obesity with 47.3%, 31.57% and 21.1%, respectively. The dominant signs were chest pain and dyspnea in 94.7% and 89.5% of cases respectively. Pulmonary embolism was unlikely in 60.52% according to the Geneva and Wells score simplified. At the thoracic angioscanner, the embolism was bilateral in 52.6% of cases and distal in 36.8% of patients;in 10 patients who performed cardiac ultrasound, pulmonary arterial hypertension (70%), dilation of the right ventricle (20%) and left ventricular dilation (40%). Hyper leucocytosis (47.4%), anemia and low prothrombin rate (TP) (22.2%) were the most found biological abnormalities. More than 2/3 (68.5%) our patients had an intermediate mortality risk according to the PESI (Pulmonary Embolism Severity Index) score. The average hospital stay was 10 days. Hospital mortality was 10.5%. <strong>Conclusion:</strong> The pulmonary embolism of the young person is a frequent, serious and multifactorial pathology and the female sex is most affected especially during peri partum periods, hence the need for preventive measures. Clinical signs are not specific and based on the assessment of clinical probability. Pulmonary angioscanner remains the confirmation review in our context.
文摘International exchange is an important part of China’s educational opening up,cooperation,and connection with other countries.It also serves as a unique strategic resource,helping to develop and consolidate mutual political trust,diplomatic exchange,economic and trade relations,cultural exchange and educational cooperation between China and other countries in the world,thereby enhancing China’s international image.We have seen positive contributions made to our progress towards peace among peoples,and noted the irreplaceable role played by China.International educational exchange is an important part of global international student flows.Since the founding of the People’s Republic of China,especially in the 40 years of reform and opening up,China has experienced a development process in education from language students to students at all levels and from quantity to quality.The change in the type of international students studying in China and of Chinese students studying abroad reflects the Chinese spirit and the broadening the appeal of China’s programs.It can be interpreted as the fulfillment of the“Chinese Dream,”contributing to national revitalization.The trade imbalance between exporting countries and destination countries in international educational exchange has been reduced.
基金funded by the National Natural Science Foundation of China(42222103,42171379,and 42101379)the Open Research Program of the International Research Center of Big Data for Sustainable Development Goals(CBAS2023ORP04)the Youth Innovation Promotion Association of Chinese Academy of Sciences(2017277).
文摘Understanding wetland change is critical to establishing and implementing international conservation and management conventions.With such knowledge,supporting sustainable development,making management decisions,improving policies,and conducting scientific research become possible.However,consistent information on changes in Chinese wetlands has been unavailable.We applied the hybrid object-based and hierarchical classification approach to∼53,000 scenes of Landsat images acquired between 1980 and 2020 and created a national wetland mapping product(China_Wetlands)for six periods(e.g.,1980,1990,2000,2010,2015,and 2020).China_Wetlands revealed diverse changes in Chinese wetlands and their trajectories in response to climate change and human impacts over the past four decades.Specifically,there was a substantial shrinkage in wetland area before 2015,with a small rebound between 2015 and 2020.The net loss was∼60.9×10^(3)km^(2),which represents 12%of the area in 1980.However,the loss of natural wetlands was hidden by human-made wetland gain with an offset of 15.6×10^(3)km^(2).Additionally,the expansion of surface water extent approximately 14.0×10^(3)km^(2)obscured the loss of vegetated wetlands.Wetland loss in hotspot areas(e.g.,Sanjiang Plain and Yangtze River Delta)should not be neglected.The sustainable management and effective conservation of wetlands in China should target wetland areas,landscape structures,and small wetlands delivering important ecosystem services.Moreover,the conversion of wetland types and the invasion of alien species need to be monitored and regulated.China_Wetlands will be a critical wetland dataset for ecological research and the assessment of national and global environmental objectives(e.g.,the United Nation’s sustainable development goals).
