维普中文期刊产品整合服务
39篇 您的检索式:作者名="Jingguang Li"
    题名 作者 年代 出处 被引量
1Occurrence of perfluoroalkyl substances in matched human serum,urine,hair and nail显示文摘The purpose of this study was to determine perfluoroalkyl substances(PFASs) in human serum, urine, hair and nail from general populations, and to investigate the possibility for human urine, hair and nail used as the biomonitoring sample for PFASs exposure. We detected the concentrations of PFHx A, PFOA, PFNA, PFDA, PFUn DA, PFDo A, PFHx S and PFOS in 39 matched human serum, urine, hair and nail samples from Shenzhen in China. The detection frequency and the median level of PFOS were all higher than that of the other PFASs in four matrices. The median concentration of PFOS in serum, urine, hair, and nail were 9.24 ng/mL, 13.96 ng/L, 0.58 ng/g and 0.63 ng/g, respectively. The results of spearman correlation test indicated that nail was an ideal matrix for biomonitoring PFOS rather than human urine and hair in general populations for the non-invasive sampling.Yuxin Wang Yuxin Zhong Jingguang Li Jianqing Zhang Bing Lyu Yunfeng Zhao Yongning Wu 2018Journal of Environmental Sciences2018,30,5:17
2Association of serum levels of perfluoroalkyl substances with gestational diabetes mellitus and postpartum blood glucose显示文摘This study was conducted to examine the association of perfluoroalkyl substance(PFAS)exposure with gestational diabetes mellitus(GDM) risk and postpartum fasting blood glucose.We used a 1:2 matched case–control study with 84 GDM subjects and 168 healthy pregnant women from Beijing, China. The maternal blood was collected at 1–2 days before delivery, and eight linear isomers and fourteen branched isomers were determined in maternal serum.Logistic regression analyses were performed to evaluate the associations after adjusting for potential confounders. The median of the sum of levels of total PFASs was 4.24 ng/m L with a interquartile range(IQR) of 2.82–6.54 ng/m L. Although maternal PFAS exposure was not associated with risk of GDM, significant positive associations were observed between evaluated exposure to specific PFAS congeners and increasing blood glucose. The odds ratio(ORs) of the highest category of postpartum fasting blood glucose for perfluoro-1-metylheptylsulfonat(1 m-PFOS), perfluoro-3/4-metylheptylsulfonat(3 m+4 m-PFOS), perfluoro-5-metylheptylsulfonat(5 m-PFOS), and perfluorohexane sulfonate(PFHx S) were 2.03(95% CI: 1.09–3.77), 1.93(95% CI:1.04–3.58), 2.48(95% CI: 1.33–4.65), and 2.26(95% CI: 1.21–4.21), respectively, suggesting negative effects of maternal exposure to specific PFAS compounds on glucose metabolism.Yuxin Wang Lei Zhang Yue Teng Jiayu Zhang Lin Yang Jingguang Li Jianqiang Lai Yunfeng Zhao Yongning Wu 2018Journal of Environmental Sciences2018,30,7:8
3Ecological adaptation strategies of annual plants in artificial vegetation-stabilized sand dune in Shapotou Region显示文摘Taking annual plant Eragrostis poaeides in the artificial vegetation-stabilized sand dune in the Shapotou Experimental Research Station as example, study has been done on the adaptation strategies of annual plants to random environment through fixed quadrat observations of population changes and fixed plant determinations of individual growth, seed germination,population dynamics, spatial distribution pattern of population, competition and regulation. During the growing season, the survival rate of annual plants depends on the precipitation intensity and precipitation duration which activate the germination of seeds. The optimal germination strategy of annual plants in this habitat during the growing season appears as continuous germination under suitable conditions. Such continuous germination is an adaptive characteristic of annual plants to random environment. In addition, the variation processes of population size and regulation mechanism of E. poaeoides are studied. Statistical results of natural population in four consecutive years show that water condition in the habitat is the leading factor affecting the population dynamics of E. poaeoides. During the establishment period E. poaeoides had a higher death rate, but in the middle to later period they could survive stably. Due to the limitation of soil moisture, the competition among individuals for water inevitably led to self-thinning phenomena. Under very arid condition, the survival curve of annual herbs entirely appears as Deevey Ⅲ type (C type), but under relatively adequate precipitation condition, the survival curve appears as intermediate type. The strategy of life history obviously appears as r-strategy. Plant species of r-strategy often occurs in the early succession stage of the communities. In the relatively adequate and evenly-distributed rainfall years, E. poaeoides population exhibited a density-dependent, i. e., survival rate increased with decrease in population density. The main pattern to regulate the population number for the intraspecific competition is to regulate the highly variable initial density into a final density with narrow variation range.ZHANG Jingguang LI Xinrong WANG Xinping WANG Gang 2004Science China Earth Sciences2004,47,z1:8
4Indoor decorating and refurbishing materials and furniture volatile organic compounds emission labeling systems:A review显示文摘The volatile organic compounds (VOC) emitted from indoor decorating and refurbishing materials and furniture is recognized as one of the main causes of bad indoor air quality,which has resulted in serious economic losses.In European countries and the U.S.,labeling systems for indoor decorating and refurbishing materials and furniture were established to address this issue with good effect.This paper is a review of these existing labeling systems.The basic principle of the labeling systems is introduced.The technical,policy and operational parts of the labeling systems are then discussed.The research concentrates on target pollutants,their threshold values and the testing methods employed.Some problems were uncovered in these labeling systems:too many VOCs were targeted;the method to determine the threshold values was not very rigorous;the testing time was too long (7-28 d).Some China's special features in developing such system are stated.Therefore,as the world's largest national producer and consumer of wood based panels and furniture,China should learn from foreign experience of establishing labeling systems as much as it can.However China should not simply copy the foreign approaches but develop its own scientific labeling system for indoor decorating and refurbishing materials and furniture.LIU WeiWei ZHANG YinPing YAO Yuan LI JingGuang 2012Chinese Science Bulletin2012,57,20:7
5Particle-bound PCDD/Fs in the Atmosphere of an Electronic Waste Dismantling Area in China显示文摘Objective Particulate samples from the atmosphere in an electronic waste dismantling area were collected to investigate the levels and sources of polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs). Methods Particulate samples including total suspended particulates (TSP) and particulate matter <2.5 μm diameter (PM2.5) were collected on selected non‐rainy days in summer (Jul 10-12, 2006) and winter (Jan 11-13, 2007) from Fengjiang (FJ), an electronic waste (e‐waste) dismantling area in eastern China, and an adjacent area Luqiao (LQ). The samples were analyzed by isotope dilution ‐ high resolution gas chromatography / high resolution mass spectrometry (HRGC/HRMS). Results In FJ, the mean PCDD/F concentrations (mean TEQ values) were 280.6 pg Nm‐3 (3.432 pg WHO‐TEQ Nm‐3) for the TSP samples and 223.3 pg Nm‐3 (3.180 pg WHO‐TEQ Nm‐3) for the PM2.5 samples. The total PCDD/F concentrations and TEQs in the PM2.5 samples were about 66.8%‐108.0% of the TSP samples, indicating that the fine particles contained higher levels of PCDD/Fs than coarse particles. The PCDD/F levels in FJ were much higher than those detected in common urban areas around the world, suggesting that the study area was heavily polluted by PCDD/Fs. Furthermore, the total average daily PCDD/F intake in FJ was estimated at 62.11 pg WHO‐TEQ kg‐1·day‐1 for adults and 110.11 pg WHO‐TEQ kg‐1·day‐1 for children, which greatly exceeds the WHO (1998) tolerable daily intake of 1-4 pg of WHO‐TEQ kg‐1·day‐1. Conclusion The PCDD/F homologues and congener profiles confirmed that the PCDD/Fs in FJ originated from crude e‐waste recycling activities. The severe dioxin pollution present in FJ has also substantially influenced the adjacent area of LQ through atmospheric transport. Open burning of medical waste was another source of PCDD/Fs identified in LQ.WEN Sheng GONG Yan LI JingGuang SHI TingMing ZHAO YunFeng WU YongNing 2011Biomedical and Environmental Sciences2011,24,2:6
6Characterizing the Exposome of Food Contamination and China Total Diet Study: Project for Improving Food Safety Risk Assessment in China显示文摘Over the past 30 years,China,as a developing country with a huge population and large geographical heterogeneity,has made a big leap from a shortage of food to basically the elimination of hunger.However,there has been a challenge moving from traditional agriculture and farming practices with numerous small food businesses and short supply chains to larger scale production and longer supply chains.Ensuring an adequate supply of safe,nutritious,high-quality food requires regulatory oversight based on scientific evidence.With the global distribution of human food and ingredients,this is a shared challenge internationally.The only way to steadily improve the food safety situation globally and in China is to follow the risk analysis framework with the joint efforts of all stakeholders(1).Since 2009,the Chinese risk assessment system has been developed in accordance with the Food Safety Law of the People’s Republic of China.Bing Lyu Jingguang Li Yongning Wu 2022China CDC weekly2022,4,9:3
7Levels of tetrabromobisphenol A, hexabromocyclododecanes and polybrominated diphenyl ethers in human milk from the general population in Beijing, China显示文摘Zhixiong Shi Yang Jiao Yue Hu Zhiwei Sun Xianqing Zhou Jinfang Feng Jingguang Li Yongning Wu 2012Science of the Total Environment2012,,:2
8Rice Heavy Metal P-type ATPase OsHMA6 Is Likely a Copper Efflux Protein显示文摘P1B-type heavy metal ATPases(HMAs)are transmembrane metal-transporting proteins that play a key role in metal homeostasis.We here reported the characterization of rice OsHMA6,a member of the P1B-type ATPase family.Phylogenetic tree analysis showed that OsHMA6 belonged to the Cu/Ag subgroup of the HMA family and had a close evolutionary relationship with OsHMA9.Amino acid sequence alignment showed 82.78%consistency between OsHMA6 and OsHMA9.OsHMA6 expressed in all organs at different growth stages,including spikelet,and abundant in leaf blades,however,OsHMA9 most strongly expressed in roots,but very low in spikelet.Excessive Cu^2+can up-regulate the expression of OsHMA6 and OsHMA9 in rice seedlings.The heterologous expression in yeast showed that OsHMA6 can significantly rescue the growth of yeast strain CM52 when supplied with 3 or 6 mmol/L Cu^2+.Compared with the empty vector pYES2,the Cu concentration in OsHMA6-pYES2 decreased by 23.4%and 30.3%under 3 or 6 mmol/L Cu2+,respectively.Subcellular localization revealed that OsHMA6 was located in the plasma membrane.These results suggested that OsHMA6,similar to OsHMA9,is likely a copper efflux protein located in the plasma membrane.ZOU Wenli LI Chang ZHU Yajun CHEN Jingguang HE Haohua YE Guoyou 2020Rice science2020,27,2:2
9Genetic Characterization of Two Human Cases Infected with the Avian Influenza A(H5N6)Viruses—Guangxi Zhuang Autonomous Region,China,2021显示文摘Summary What is known about this topic?H5N6 has replaced H5N1 as a dominant avian influenza virus(AIV)subtype in southern China.The increasing genetic diversity and geographical distribution of H5N6 pose a serious threat to the poultry industry and human health.What is added by this report?A total of 2 cases of H5N6 that occurred from February 2021 to July 2021 in Guangxi.Fuyin Bi Lili Jiang Lihua Huang Jingguang Wei Xiaowen Pan Yu Ju Jianjun Mo Minmei Chen Ning Kang Yi Tan Yonghong Li Jing Wang 2021China CDC weekly2021,3,44:2
10Exposure to Emerging and Legacy Polyfluoroalkyl Substances in the Sixth Total Diet Study-China,2016-2019显示文摘Summary What is already known about this topic?Perfluoroalkyl substances(PFASs)are persistent organic pollutants,which have multi-organ toxicity and potential health risk to humans.What is added by this report?The most commonly detected PFASs in the Sixth China Total Diet Study(TDS)samples were perfluorooctanesulfonate(PFOS),perfluorooctanoic acid(PFOA),perfluoroundecanoic acid(PFUdA),perfluorodecanoic acid(PFDA),perfluorononanoic acid(PFNA),and 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate(6:2 Cl-PFESA).The mean estimated weekly intakes(EWIs)of PFOA,PFOS,and 6:2 Cl-PFESA in the Sixth TDS were 2.17,2.72,and 2.75 ng/kg body weight per week,respectively.What are the implications for public health practice?The PFASs levels in some food category and dietary exposure still need to be continuously monitored,especially for 6:2 Cl-PFESA.Yuxin Wang Xueyan Gao Jiaying Liu Bing Lyu Jingguang Li Yunfeng Zhao Yongning Wu 2022China CDC weekly2022,4,9:2
11Levels of tetrabromobisphenol A, hexabromocyclododecanes and polybrominated diphenyl ethers in human milk from the general population in Beijing, China显示文摘Zhixiong Shi Yang Jiao Yue Hu Zhiwei Sun Xianqing Zhou Jinfang Feng Jingguang Li Yongning Wu 2012Science of the Total Environment2012,,:1
12Polychlorinated dibenzo-p-dioxin and dibenzofurans ( PCDD/Fs ), polybrominated diphenyl ethers (PBDEs) , and polychlorinated biphenyls (PCBs) monitored by tree bark in an e-waste recycling area 显示文摘WEN Sheng YANG Fangxing LI Jingguang 2009Chemusphere2009,74,7:1
13Long- term eeosysytem effecets of sand-binding vegetation in the tengger desert,Northern China显示文摘Li Xinrong Xiao Honglang Zhang Jingguang etal Restoration Ecology0,,:1
14Levels ofpolybrominated diphenyl ethers(PBDEs)in breast milk fromBeijing,China显示文摘LI Jingguang YU Huifang ZHAO Yunfeng 2008Chemosphere2008,73,2:1
15Dietary intake of PCDD/Fs and dioxin-like PCBs from the Chinese total diet study in 2007显示文摘ZHANG Lei LI Jingguang LIU Xiao 2013Chemosphere2013,90,5:1
16Perfluorinated compounds in seafood from coastal areas in China显示文摘Yongning Wu Yuxin Wang Jingguang Li Yunfeng Zhao Feifei Guo Jiaying Liu Zongwei Cai 2011Environment International2011,,:1
17Study on soil microbiotic crust and is influences on sand-fixing vege-tation in arid desert region显示文摘Li Xinrong Zhang Jingguang Wang Xinping 2000Acta Botanica Sinica2000,42,9:1
18Dietary intake of PCDD/Fs and dioxin-like PCBs from the Chinese totaI diet study in 2007 显示文摘ZHANG Lei LI Jingguang LIU X 2013Chemosphere2013,90,:1
19Dietary intake of polychlorinated dioxins, furans and dioxin-like polychlorinated biphenyls from foods of animal origin in China 显示文摘LI Jingguang WU Yongning ZHANG Lei 2007Food Addit Contam A2007,24,2:1
20A national survey of polychlorinated dioxins, furans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dI-PCBs) in human milk in China显示文摘LI Jingguang ZHANG Lei WU Yongning 2009Chemosphere2009,75,9:1
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费