本文介绍FREQUENTIS内话系统联网功能在北京区管中心应用。北京区管中心自2014年开始使用内话联网功能,经过6年的时间,联网功能及技术有了很大的改进。本文简单介绍传统的MF C模拟联网及AT S-Q SI G数字联网,重点介绍FRQUENTIS公司的新...本文介绍FREQUENTIS内话系统联网功能在北京区管中心应用。北京区管中心自2014年开始使用内话联网功能,经过6年的时间,联网功能及技术有了很大的改进。本文简单介绍传统的MF C模拟联网及AT S-Q SI G数字联网,重点介绍FRQUENTIS公司的新技术,VCX-IP联网方式及配置。展开更多
This paper is a review of studies of abrupt climate changes(ACCs) during the Holocene published during the past ten years.North Atlantic cold events are indicators of ACCs.As indicated by North Atlantic ice-rafted deb...This paper is a review of studies of abrupt climate changes(ACCs) during the Holocene published during the past ten years.North Atlantic cold events are indicators of ACCs.As indicated by North Atlantic ice-rafted debris(IRD),there were nine confirmed cold events during the Holocene,occurring at 11.1 kyr,10.3 kyr,9.4 kyr,8.1 kyr,5.9 kyr,4.2 kyr,2.8 kyr,1.4 kyr,and 0.4 kyr respectively according to most representative results from Bond et al.(1997).However,the identification of chronology has been made with some uncertainties.Considerable climatic proxy data have shown that,during the cold events,substantial climate abnormalities have occurred widely across the globe,particularly in the areas surrounding the North Atlantic.These abnormalities were in the form of high-latitude cold in the both hemispheres,expansion of the Westerlies to low latitudes,drought in the monsoon regions,recession of summer monsoons,and intensification of the winter monsoons.Studies have indicated that the four ACCs occurring in the early Holocene may be related to freshwater pulses from ice melting in the northern part of the North Atlantic,and the other five ACCs that occurred during the middle and late Holocene may be related to the decreased solar activity.展开更多
Objectives:To examine the relationship between cardiovascular disease risk factors and frailty in a sample of older Chinese adults.Methods:A total of 458 community-dwelling older adults(>65 years)in Lanzhou,Gansu P...Objectives:To examine the relationship between cardiovascular disease risk factors and frailty in a sample of older Chinese adults.Methods:A total of 458 community-dwelling older adults(>65 years)in Lanzhou,Gansu Province of China participated in a cross-sectional survey.Their status was evaluated in terms of frailty phenotype(unintentional weight loss,exhaustion,low activity levels,slowness and weakness).Participants were categorized as not frail,prefrail or frail.Cardiovascular disease risk factors that were assessed included:blood pressure,body mass index,waist circumference,blood glucose,total cholesterol,triglycerides,lowdensity lipoproteins and high-density lipoproteins.Results:Individuals with obesity had an increased risk of prefrailty(OR:2.26;95%CI:1.05,4.84).Hypertension was inversely associated with frailtyamong the participants(OR:0.31;95%CI:0.11,0.87)after adjusting for covariates.Conclusions:The findings suggest that much more attention should be paid to weight control of the elderly in the community for preventing them from transition to prefrailty or frailty.Active prevention and control of cardiovascular diseases among the community-dwelling elder are still of great importance.展开更多
Based on the analysis of different requirements of energy management center construction and the data acquisition of various industries in wide area network, as well as the practices of real-lime online system, the pa...Based on the analysis of different requirements of energy management center construction and the data acquisition of various industries in wide area network, as well as the practices of real-lime online system, the paper puts forward the construction scheme of regional energy management center （REMC） which can achieve real time online monitoring of organizations＇ energy consumption via data collection, and also proposes the design idea of energy data acquisition based on national standards.展开更多
基金Under the auspices of National Natural Science Foundation of China (No. 41101083,41130105)Strategic Project of Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences (No. 2012ZD001)Major State Basic Research Development Program of China (No. 2010CB950104)
文摘This paper is a review of studies of abrupt climate changes(ACCs) during the Holocene published during the past ten years.North Atlantic cold events are indicators of ACCs.As indicated by North Atlantic ice-rafted debris(IRD),there were nine confirmed cold events during the Holocene,occurring at 11.1 kyr,10.3 kyr,9.4 kyr,8.1 kyr,5.9 kyr,4.2 kyr,2.8 kyr,1.4 kyr,and 0.4 kyr respectively according to most representative results from Bond et al.(1997).However,the identification of chronology has been made with some uncertainties.Considerable climatic proxy data have shown that,during the cold events,substantial climate abnormalities have occurred widely across the globe,particularly in the areas surrounding the North Atlantic.These abnormalities were in the form of high-latitude cold in the both hemispheres,expansion of the Westerlies to low latitudes,drought in the monsoon regions,recession of summer monsoons,and intensification of the winter monsoons.Studies have indicated that the four ACCs occurring in the early Holocene may be related to freshwater pulses from ice melting in the northern part of the North Atlantic,and the other five ACCs that occurred during the middle and late Holocene may be related to the decreased solar activity.
基金supported by the National Natural Science Foundation of China[grant number 71804064].
文摘Objectives:To examine the relationship between cardiovascular disease risk factors and frailty in a sample of older Chinese adults.Methods:A total of 458 community-dwelling older adults(>65 years)in Lanzhou,Gansu Province of China participated in a cross-sectional survey.Their status was evaluated in terms of frailty phenotype(unintentional weight loss,exhaustion,low activity levels,slowness and weakness).Participants were categorized as not frail,prefrail or frail.Cardiovascular disease risk factors that were assessed included:blood pressure,body mass index,waist circumference,blood glucose,total cholesterol,triglycerides,lowdensity lipoproteins and high-density lipoproteins.Results:Individuals with obesity had an increased risk of prefrailty(OR:2.26;95%CI:1.05,4.84).Hypertension was inversely associated with frailtyamong the participants(OR:0.31;95%CI:0.11,0.87)after adjusting for covariates.Conclusions:The findings suggest that much more attention should be paid to weight control of the elderly in the community for preventing them from transition to prefrailty or frailty.Active prevention and control of cardiovascular diseases among the community-dwelling elder are still of great importance.
文摘Based on the analysis of different requirements of energy management center construction and the data acquisition of various industries in wide area network, as well as the practices of real-lime online system, the paper puts forward the construction scheme of regional energy management center （REMC） which can achieve real time online monitoring of organizations＇ energy consumption via data collection, and also proposes the design idea of energy data acquisition based on national standards.
