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13篇 您的检索式:作者名="Wu, Keyong"
    题名 作者 年代 出处 被引量
1Green Production Technology of the Monomer of Nylon-6: Caprolactam显示文摘Baoning Zong Bin Sun Shibiao Cheng Xuhong Mu Keyong Yang Junqi Zhao Xiaoxin Zhang Wei Wu 2017Engineering2017,3,3:9
2Fruit and vegetable consumption,cardiovascular disease,and all-cause mortality in China显示文摘Evidence about the response patterns of fruit and vegetable consumption with the risk of cardiovascular disease(CVD)and allcause mortality was inconsistent.These associations were examined using a large-scale,population-based Chinese cohort comprising 100,728 participants.A food-frequency questionnaire was used to assess fruit and vegetable consumption.Outcomes were ascertained by interviewing individuals or their proxies and checking hospital records or death certificates.Cox proportional hazards regression was used to calculate hazard ratios(HRs)with 95% confidence intervals(CIs).At the 736,668 person-years of follow-up,3,677 CVD cases and 5,466 deaths were identified.The multivariable-adjusted HRs for CVD across increasing quartiles of total fruit and vegetable consumption were 1(reference),0.94(95%CI=0.85-1.04),0.89(95%CI=0.80-0.98),and 0.85(95%CI=0.77-0.95).Moreover,participants in the highest quartile displayed a 13% lower risk of all-cause mortality(HR=0.87;95%CI=0.80-0.95).A nonlinear dose-response relation was found for CVD,without additional benefits beyond a consumption of600 g d-1,whereas the all-cause mortality risk decreased along with higher consumption,with a linear trend.These associations remained significant for fruit consumption but not for vegetable consumption.Our findings indicated that greater fruit and vegetable consumption was significantly associated with a lower risk of CVD and all-cause mortality.Increasing fruit and vegetable consumption,especially fruit,in the general population would prevent CVD and premature mortality.Jun Wang Fangchao Liu Jianxin Li Keyong Huang Xueli Yang Jichun Chen Xiaoqing Liu Jie Cao Shufeng Chen Chong Shen Ling Yu Fanghong Lu Xianping Wu Liancheng Zhao Ying Li Dongsheng Hu Jianfeng Huang Dongfeng Gu Xiangfeng Lu 2022Science China(Life Sciences)2022,65,1:8
3Adverse associations of sedentary behavior with cancer incidence and all-cause mortality:A prospective cohort study显示文摘Background:Inconsistent results have been reported in developed countries for relationships between sedentary behavior and cancer incidence and mortality,and evidence from the Chinese population is scarce.This study aimed to investigate such relationships in large Chinese population-based prospective cohorts and to explore the joint effect and interaction of sedentary behavior and moderate-to-vigorous physical activity(MVPA)on these relationships.Methods:We included 95,319 Chinese adults without cancer from 3 large cohorts and assessed their sedentary behavior and physical activity with a unified questionnaire.Cancer incidence and mortality were confirmed by interviewing participants or their proxies and checking hospital records and death certificates.Hazard ratios(HRs)and 95%confidence intervals(95%CIs)for cancer and mortality were estimated using Cox proportional hazards regression models.Results:During 559,002 person-years of follow-up,2388 cancer events,1571 cancer deaths,and 4562 all-cause deaths were recorded.Sedentary behavior was associated with increased risk of developing cancer and deaths in a doseresponse manner.The multivariable-adjusted HRs(95%CIs)were the following:HR=1.16,95%CI:1.01-1.33;HR=1.24,95%CI:1.04-1.48;and HR=1.15,95%CI:1.04-1.28 for cancer incidence,cancer mortality,and all-cause mortality,respectively,for those having≥10 h/day of sedentary time compared with those having<6 h/day of sedentary time.Sedentary populations(≥10 h/day)developed cancer or died 4.09 years and 2.79 years earlier,respectively,at the index age of 50 years.Failure to achieve the recommended level of MVPA may further aggravate the adverse associations,with the highest cancer and mortality risks being observed among participants with both≥10 h/day of sedentary time and<150 min/week of MVPA.Limitations of this study include the fact that physical activity information was obtained via questionnaire instead of objective measurement and that there were insufficient incident cases for the analysis of associations between sedentary behavior and site-specific cancers.Conclusion:Sedentary behavior was associated with an increased risk of cancer and all-cause mortality among Chinese adults,especially for those with≥10 h/day of sedentary time.It is necessary to reduce sedentary time,in addition to increasing MVPA levels,for the prevention of cancer and premature death.Yuan Lin Qiong Liu Fangchao Liu Keyong Huang Jianxin Li Xueli Yang Xinyan Wang Jichun Chen Xiaoqing Liu Jie Cao Chong Shen Ling Yu Fanghong Lu Xianping Wu Liancheng Zhao Ying Li Dongsheng Hu Xiangfeng Lu Jianfeng Huang Dongfeng Gu 2021Journal of Sport and Health Science2021,10,5:2
4A combined single photon ionization and photoelectron ion- ization source for orthogonal acceleration time-of-flight mass spectrometer显示文摘WU QINGHAO HUA LEI HOU KEYONG 2010International Journal of Mass Spec- trometry2010,295,12:1
5Error analysis and test study of fiber optic gyroscope north-finder 显示文摘Zhang Zhijun Sun Jiyu Wu Keyong 2005Proceedings of SPIE2005,,5634:1
6Radiofrequency field enhanced chemical ionization with vacuum ultraviolet lamp for miniature time-of-flight mass spectrometer显示文摘It is difficult to rapidly and on-line detect trace volatile organic compounds for miniature mass spectrometry due to its limited sampling volume at slow pumping speed. In this paper, we developed a new radiofrequency field enhanced chemical ionization source(RF-ECI) with vacuum ultraviolet(VUV)lamp by coupling radiofrequency electric field and direct-current field together. The experiment results showed that the sensitivity of benzene, toluene, hydrogen sul fide and other compounds increased by 2–3 orders of magnitude under the introduction of RF-ECI comparing to traditional single photon ionization(SPI). At the same time, the reagent ion of O_2^+realized the charge transfer reaction chemical ionization,and the RF-ECI effectively expanded the detection range of the VUV lamp based SPI. The VUV lamp has inherent advantages in the on-site analytical instrument for its small size and low power consumption,and the VUV lamp based RF-ECI miniature time-offlight mass spectrometer(TOFMS) has a limit-ofdetection for H_2S as low as 0.0571 mg/m^3, and it is expected to be used widely in the field of on-site rapid analysis.Lijuan Zhou Jichun Jiang Kun Zhao Jinxu Li Chenxin Wu Haiyang Li Di Tian Keyong Hou 2018Chinese Chemical Letters2018,29,5:1
7Temporal trend in mortality of cardiovascular diseases and its contribution to life expectancy increase in China, 2013 to 2018显示文摘Backgrounds::Cardiovascular disease(CVD)remains the leading cause of deaths nationwide.However,little is understood about its temporal trend and corresponding influence on longevity improvements.We aimed to describe the updated tendency in CVD mortality and to quantify its impact on life expectancy(LE)increase in China.Methods::All-cause mortality rates were calculated with population sizes from the National Bureau of Statistics and death counts from the National Health Commission.We estimated CVD mortality rates by allocating age-and sex-based mortality envelopes to each CVD subtype based on its proportion derived from the Disease Surveillance Points system.The probability of CVD premature deaths and LE were calculated with life tables and we adopted Arriaga’s method to quantitate age-and cause-specific contributions to LE gains.Results::During 2013 to 2018,the age-standardized mortality rate of CVD decreased from 289.69(95%confidence interval[CI]:289.03,290.35)/100,000 to 272.37(95%CI:271.81,272.94)/100,000,along with a decline in probability of CVD premature deaths from 9.05%(95%CI:9.02%,9.09%)to 8.13%(95%CI:8.10%,8.16%).The gap in CVD mortality across sexes expanded with more remarkable declines in females,especially for those aged 15 to 64 years.Among major subtypes,the probability of premature deaths from hemorrhage stroke declined fastest,while improvements of ischemic stroke and ischemic heart disease were limited,and there was an increase in stroke sequelae.LE in China reached 77.04(95%CI:76.96,77.12)years in 2018 with an increase of 1.38 years from 2013.Of the total LE gains,21.15%(0.29 years)were attributed to reductions of CVD mortality in the overall population,mostly driven by those aged>65 years.Conclusions::The general process in reducing CVD mortality has contributed to longevity improvements in China.More attention should be paid to prevention and control of atherosclerotic CVD and stroke sequelae,especially for the elderly.Working-age males also deserve additional attention due to inadequate improvements.Xue Xia Yue Cai Xiang Cui Ruixian Wu Fangchao Liu Keyong Huang Xueli Yang Xiangfeng Lu Shiyong Wu Dongfeng Gui 2022Chinese Medical Journal2022,135,17:1
8Autofocus system for space cameras 显示文摘Zhaohui Li Keyong Wu 2005Optical Engineering2005,44,5:1
9A combined single photon ionization and photoelectron ionization source for orthogonal acceleration time-of-flight mass spectrometer显示文摘Qinghao Wu Lei Hua Keyong Hou Huapeng Cui Ping Chen Weiguo Wang Jinghua Li Haiyang Li 2010International Journal of Mass Spectrometry2010,,1:1
10SYNTHESIS OF GUIDED CHAIN DRIVE MECHANISM WITH LINKAGE显示文摘SYNTHESISOFGUIDEDCHAINDRIVEMECHANISMWITHLINKAGEShanBaozhongWuKeyongChangchunInstituteofOpticsandFineMechanicsWangYixingChenEn...Shan, Baozhong Wu, Keyong Wang, Yixing Chen, Entao 1998Chinese Journal of Mechanical Engineering1998,11,1:0
11Integrating polygenic and clinical risks to improve stroke risk stratification in prospective Chinese cohorts显示文摘The utility of the polygenic risk score(PRS)to identify individuals at higher risk of stroke beyond clinical risk remains unclear,and we clarified this using Chinese population-based prospective cohorts.Cox proportional hazards models were used to estimate the 10-year risk,and Fine and Gray’s models were used for hazard ratios(HRs),their 95%confidence intervals(CIs),and the lifetime risk according to PRS and clinical risk categories.A total of 41,006 individuals aged 30–75 years with a mean follow-up of 9.0 years were included.Comparing the top versus bottom 5%of the PRS,the HR was 3.01(95%CI 2.03–4.45)in the total population,and similar findings were observed within clinical risk strata.Marked gradients in the 10-year and lifetime risk across PRS categories were also found within clinical risk categories.Notably,among individuals with intermediate clinical risk,the 10-year risk for those in the top 5%of the PRS(7.3%,95%CI 7.1%–7.5%)reached the threshold of high clinical risk(≥7.0%)for initiating preventive treatment,and this effect of the PRS on refining risk stratification was evident for ischemic stroke.Even among those in the top 10%and 20%of the PRS,the 10-year risk would also exceed this level when aged≥50 and≥60 years,respectively.Overall,the combination of the PRS with the clinical risk score improved the risk stratification within clinical risk strata and distinguished actual high-risk individuals with intermediate clinical risk.Qingmei Cui Fangchao Liu Jianxin Li Xiaoge Niu Zhongying Liu Chong Shen Dongsheng Hu Keyong Huang Shufeng Chen Jie Cao Xiaoqing Liu Ling Yu Fanghong Lu Xianping Wu Liancheng Zhao Jianfeng Huang Ying Li Zhibin Hu Hongbing Shen Dongfeng Gu Xiangfeng Lu 2023Science China(Life Sciences)2023,66,7:0
12Effect of Pb, Hg and Cd in soil on scavenging system of activated oxygen in tobacco leaves显示文摘Pb, Hg and Cd will affect human health by vegetative chain. In recent years, people more and more are concerned about heavy metal pollution of the soil-plant system. Many researchers studied the effect of single heavy metal on growth, photosynthesis, respiration and quality of plants, but few systematicstudies of the effect of heavy metals on the scavenging system of activated oxygen of plants. This note systematically studies the effect of Pb, Hg and Cd in soil on the scavenging system of activated oxygen in tobacco leaves. 1 Material and methods Material: Tobacco (Nicoticana tabacum L). Methods: Cultivating and measuring methods were according to reference. 2 Results Results of this study indicate that the common effect of Pb, Hg and Cd on activity of CAT is obvi-YAN Chongling~(1,2), HONG Yetang~1, WANG Shijie~1, LIN Peng~3, YANG Xianke~2, FU Shunzhen~2, ZHU Keyong~2 and WU Shanqi~2 1. State Key Laboratory of Environmental Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Guizhou Institute of Environmental Protection, Guiyang 550002, China 3. Department of Biology, Xiamen University, Xiamen 361005, China 1999Chinese Science Bulletin1999,44,S2:0
13Characteristics of rare earth elements in soils in Guizhou carbonate region显示文摘IN recent years, rare earth element (REE) being used in agriculture has gained greater progress and madeus reach some common views. The centent of REE (especially soluble REE) in soils has significantcorrelation with that of REE plant absorbed from soil. Therefore, it is very necessary to clarify contentvariation and background values of REE (especially soluble REE ) from the angles of relation of supplyand demand between soil and plants, for reasonably using REE and formulating relevant health standardin the region, avoiding excessive using REE and taking up soil environmental capacity of REE to result insoil or water-body polluted and sometime for researching rock weathering, soil-forming process and soilclassification in the region. This note deals with characteristics of content and distribution of REE andsoluble REE in soils of Guizhou carbonate region.YAN Chongling~(1,2), HONG Yetang~1, WANG Shijie~1, FU Shunzhen~2, ZHU Keyong~2 and WU Shanqi~2 1. State Key Laboratory of Environmental Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 2. Guizhou Institute of Environmental Protection, Guiyang 550002, China 1999Chinese Science Bulletin1999,44,S2:0
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