By using the 40-year NCEP (1958-1997) grid point reanalysis meteorological data, we analyzed the inter-decadal variation on the climatic characteristics of the onset of South China Sea summer monsoon. The results are ...By using the 40-year NCEP (1958-1997) grid point reanalysis meteorological data, we analyzed the inter-decadal variation on the climatic characteristics of the onset of South China Sea summer monsoon. The results are as follows. (1) There was great difference on the onset date of the SCS summer monsoon between the first two decades and the last two decades. It was late on the 6th pentad of May for the first two decades and was on the 4th and 5th pentad of May for the next two decades. (2) Except for the third decade (1978-1987), the establishment of the monsoon rainfall was one to two pentads earlier than the onset of the summer monsoon in all other three decades. (3) The onset of the SCS monsoon is the result of the abrupt development and eastward advancement of the southwesterly monsoon over the Bay of Bengal. The four-decade analysis shows that there were abrupt development of the southwesterly monsoon over the Bay of Bengal between the 3rd and 4th pentad of May, but there was great difference between its eastward movement and its onset intensity. These may have important effect to the earlier or later onset of the SCS summer monsoon. (4) During the onset of the SCS summer monsoon, there were great difference in the upper and lower circulation feature between the first two and the next two decades. At the lower troposphere of the first two decades, the Indian-Burma trough was stronger and the center of the subtropical high was located more eastward. At the upper troposphere, the northward movement of the center of subtropical high was large and located more northward after it landed on the Indo-China Peninsula. After comparison, we can see that the circulation feature of the last two decades was favorable to the establishment and development of the SCS summer monsoon.展开更多
Objective:To delineate the onset and recurrence characteristics of noncardiogenic ischemic stroke patients in China.Methods:A prospective,multicenter and registry study was carried out in 2,558 patients at 7 represent...Objective:To delineate the onset and recurrence characteristics of noncardiogenic ischemic stroke patients in China.Methods:A prospective,multicenter and registry study was carried out in 2,558 patients at 7 representative clinical sub-centers during November 3,2016 to February 17,2019.A questionnaire was used to collect information of patients regarding CM syndromes and constitutions and associated risk factors.Additionally,stroke recurrence was defined as a primary outcome indicator.Results:A total of 327(12.78%)patients endured recurrence events,1,681(65.72%)patients were men,and the average age was 63.33±9.45 years.Totally 1,741(68.06%)patients suffered first-ever ischemic stroke,1,772(69.27%)patients reported to have hypertension,and1,640(64.11%)of them reported dyslipidemia,1,595(62.35%)patients exhibited small-artery occlusion by The Trial of Org 10172 in Acute Stroke Treatment(TOAST)classification.Specifically,1,271(49.69%)patients were considered as qi-deficient constitution,and 1,227(47.97%)patients were determined as stagnant blood constitution.There were 1,303(50.94%)patients diagnosed as blood stasis syndrome,1,280(50.04%)patients exhibited phlegm and dampness syndrome and 1,012(39.56%)patients demonstrated qi deficiency syndrome.And 1,033(40.38%)patients declared intracranial artery stenosis,and 478(18.69%)patients reported carotid artery stenosis.The plaque in 1,508(41.36%)patients were of mixed.Particularly,41.09%of them demonstrated abnormal levels of glycated hemoglobin(HbA1 c)levels.Conclusions:Recurrence in minor and small-artery stroke cannot be ignored.Hypertension,dyslipidemia,abnormal HbA1 c,intracranial artery stenosis and carotid plaque were more common in stroke patients.Particularly,phlegm-dampness and blood stasis syndromes,as well as qi deficiency and blood stasis constitutions,were still the main manifestations of stroke.(Trial registration at ClinicalTrials.gov,No.NCT03174535)展开更多
基金National Scaling Project A The Scientific Experiment on South China Sea Monsoon Part I from the fund for (G1998040900)
文摘By using the 40-year NCEP (1958-1997) grid point reanalysis meteorological data, we analyzed the inter-decadal variation on the climatic characteristics of the onset of South China Sea summer monsoon. The results are as follows. (1) There was great difference on the onset date of the SCS summer monsoon between the first two decades and the last two decades. It was late on the 6th pentad of May for the first two decades and was on the 4th and 5th pentad of May for the next two decades. (2) Except for the third decade (1978-1987), the establishment of the monsoon rainfall was one to two pentads earlier than the onset of the summer monsoon in all other three decades. (3) The onset of the SCS monsoon is the result of the abrupt development and eastward advancement of the southwesterly monsoon over the Bay of Bengal. The four-decade analysis shows that there were abrupt development of the southwesterly monsoon over the Bay of Bengal between the 3rd and 4th pentad of May, but there was great difference between its eastward movement and its onset intensity. These may have important effect to the earlier or later onset of the SCS summer monsoon. (4) During the onset of the SCS summer monsoon, there were great difference in the upper and lower circulation feature between the first two and the next two decades. At the lower troposphere of the first two decades, the Indian-Burma trough was stronger and the center of the subtropical high was located more eastward. At the upper troposphere, the northward movement of the center of subtropical high was large and located more northward after it landed on the Indo-China Peninsula. After comparison, we can see that the circulation feature of the last two decades was favorable to the establishment and development of the SCS summer monsoon.
基金Supported by Traditional Chinese Medicine Research Special Project(No.201507003-8)Construction of a Service System for Traditional Chinese Medicine Preventive Treatment of Disease(No.2018YFC1704705)。
文摘Objective:To delineate the onset and recurrence characteristics of noncardiogenic ischemic stroke patients in China.Methods:A prospective,multicenter and registry study was carried out in 2,558 patients at 7 representative clinical sub-centers during November 3,2016 to February 17,2019.A questionnaire was used to collect information of patients regarding CM syndromes and constitutions and associated risk factors.Additionally,stroke recurrence was defined as a primary outcome indicator.Results:A total of 327(12.78%)patients endured recurrence events,1,681(65.72%)patients were men,and the average age was 63.33±9.45 years.Totally 1,741(68.06%)patients suffered first-ever ischemic stroke,1,772(69.27%)patients reported to have hypertension,and1,640(64.11%)of them reported dyslipidemia,1,595(62.35%)patients exhibited small-artery occlusion by The Trial of Org 10172 in Acute Stroke Treatment(TOAST)classification.Specifically,1,271(49.69%)patients were considered as qi-deficient constitution,and 1,227(47.97%)patients were determined as stagnant blood constitution.There were 1,303(50.94%)patients diagnosed as blood stasis syndrome,1,280(50.04%)patients exhibited phlegm and dampness syndrome and 1,012(39.56%)patients demonstrated qi deficiency syndrome.And 1,033(40.38%)patients declared intracranial artery stenosis,and 478(18.69%)patients reported carotid artery stenosis.The plaque in 1,508(41.36%)patients were of mixed.Particularly,41.09%of them demonstrated abnormal levels of glycated hemoglobin(HbA1 c)levels.Conclusions:Recurrence in minor and small-artery stroke cannot be ignored.Hypertension,dyslipidemia,abnormal HbA1 c,intracranial artery stenosis and carotid plaque were more common in stroke patients.Particularly,phlegm-dampness and blood stasis syndromes,as well as qi deficiency and blood stasis constitutions,were still the main manifestations of stroke.(Trial registration at ClinicalTrials.gov,No.NCT03174535)
