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| 1 | Size distributions and sources of elements in particulate matter at curbside,urban and rural sites in Beijing显示文摘Size distributions of 29 elements in aerosols collected at urban,rural and curbside sites in Beijing were studied.High levels of Mn,Ni,As,Cd and Pb indicate the pollution of toxic heavy metals cannot be neglected in Beijing.Principal component analysis (PCA) indicates 4 sources of combustion emission,crust related sources,traffic related sources and volatile species from coal combustion.The elements can be roughly divided into 3 groups by size distribution and enrichment factors method (EFs).Group 1 elements are crust related and mainly found within coarse mode including Al,Mg,Ca,Sc,Ti,Fe,Sr,Zr and Ba;Group 2 elements are fossil fuel related and mostly concentrated in accumulation mode including S,As,Se,Ag,Cd,Tl and Pb;Group 3 elements are multi-source related and show multi-mode distribution including Be,Na,K,Cr,Mn,Co,Ni,Cu,Zn,Ga,Mo,Sn and Sb.The EFs of Be,S,Cr,Co,Ni,Cu,Ga,Se,Mo,Ag,Cd,Sb,Tl and Pb show higher values in winter than in summer indicating sources of coal combustion for heating in winter.The abundance of Cu and Sb in coarse mode is about 2-6 times higher at curbside site than at urban site indicating their traffic sources.Coal burning may be the major source of Pb in Beijing since the phase out of leaded gasoline,as the EFs of Pb are comparable at both urban and curbside sites,and about two times higher in winter than that in summer. | Jingchun Duan Jihua Tan Shulan Wang Jimin Hao Fahe Chai | 2012 | Journal of Environmental Sciences2012,24,1: | 67 |
| 2 | Multispherical interactions and their effects on the Tibetan Plateau's earth system: a review of the recent researches显示文摘The Tibetan Plateau(TP) is a regional Earth system showing very strong interactions among its lithosphere, hydrosphere, cryosphere, biosphere, atmosphere, and anthrosphere. hese interactions manifest TP's impact on surrounding regions and relect TP's response to the global change. Quantifying the multispherical interactions is critically important to understand the TP environment. Our recent years researches including the ongoing program entitled ‘Tibetan Multi-Spheres Interactions and heir Resource-Environment Signiicance(TIMI)', the completed program entitled. ‘Paleo-Altitudes of Tibetan Plateau and Environment(PATE)', as well as the other relating projects have focused on multidisciplinary research approaches and emphasized on three major pathways: Eurasia-Indian plates collision on deep-Earth dynamics, uplit impact on Earth's mantle–crust dynamics, and contemporary interface on land surface and atmospheric dynamics. Our researches have taken in situ measurement as priority and developed several platforms of data acquisition and analysis, including the platforms of water-phase transformations, and ecosystem observations. Our ield investigations have been conducted to obtain data about stratum, paleontology, paleoenvironment, genetic diferentiation of animals and plants. We have developed conceptual and mathematical models for crust uplit formation, paleoclimate, glacial melt,water–air interface lux, vegetation climate, and soil erosion. We have also assessed the anthropogenic impacts on environment. Our researches have achieved new and reliable redating of the mantle–crust interaction and initial formation of the TP, found the interaction between tectonics and uplit of the TP and resultant paleoaltitude acting as a spreading source; discovered the interaction between the westerlies and Indian monsoon acting as a control chain that dominates the TP's contemporary environment. he scientiic results can play fundamental roles in supporting the TP's resource exploration and societal sustainable development. | Tandong Yao Fuyuan Wu Lin Ding Jimin Sun Liping Zhu Shilong Piao Tao Deng Xijun Ni Hongbo Zheng Hua Ouyang | 2015 | National Science Review2015,2,4: | 35 |
| 3 | Preliminary engineering application of microseismic monitoring technique to rockburst prediction in tunneling of Jinping Ⅱ project显示文摘Monitoring and prediction of rockburst remain to be worldwide challenges in geotechnical engineering.In hydropower,transportation and other engineering fields in China,more deep,long and large tunnels have been under construction in recent years and underground caverns are more evidently featured by 'long,large,deep and in group',which bring in many problems associated with rock mechanics problems at great depth,especially rockburst.Rockbursts lead to damages to not only underground structures and equipments but also personnel safety.It has been a major technical bottleneck in future deep underground engineering in China.In this paper,compared with earthquake prediction,the feasibility in principle of monitoring and prediction of rockbursts is discussed,considering the source zones,development cycle and scale.The authors think the feasibility of rockburst prediction can be understood in three aspects:(1) the heterogeneity of rock is the main reason for the existence of rockburst precursors;(2) deformation localization is the intrinsic cause of rockburst;and(3) the interaction between target rock mass and its surrounding rock mass is the external cause of rockburst.As an engineering practice,the application of microseismic monitoring techniques during tunnel construction of Jinping II Hydropower Station was reported.It is found that precursory microcracking exists prior to most rockbursts,which could be captured by the microseismic monitoring system.The stress concentration is evident near structural discontinuities(such as faults or joints),which shall be the focus of rockburst monitoring.It is concluded that,by integrating the microseismic monitoring and the rock failure process simulation,the feasibility of rockburst prediction is expected to be enhanced. | Chun'an Tang Jimin Wang Jingjian Zhang | 2010 | Journal of Rock Mechanics and Geotechnical Engineering2010,2,3: | 32 |
| 4 | Insult of gastroesophageal reflux on airway: clinical significance of pharyngeal nozzle显示文摘在到最糟的最高的注意在航线上吸烟以及薄雾侮辱的全球付钱的时间,所有人知道两个外长、显著。然而,包括许多医药人员,人们主要不知道 gastroesophageal 倒流(GER ) 怎么糟糕在我们的自己的航线上侮辱。GER 的症状通常被看作心痛和流回,它能主要被容忍。不管多么起来在它出现的地方,去的胃的内容相对地传递食管然后远侧的咽象苛评一样的鸟喙,用作一张嘴,以便生产众多微粒子并且到达oro鼻的洞并且另外引起的航线过敏鼻炎和气喘的攻击,甚至肺的实质损害。它将减少生活质量或甚至使受危险生活。内长的侮辱在呼吸系统出现,但是从消化的道发源的点不是众所周知的并且经常 undiagnosed 并且不正确地对待。导致的航线挑战是的 GER 一个可对待、预防的实体一旦诊断被做,好消除能通过 radiofrequency 或 fundoplication 借助于张开的贲门的生活方式调整,药,或固定被期望。作者王忠高博士承受了它为长并且症状在反倒流外科以后消失了 8 年。这是王忠高博士和他的队工作的一个演讲并且将引起注意到公众以便认出作为吸烟或薄雾从人的本身,然而并非从外面的环境发生的一个可对待的条件做的这个相对未知的实体。 | Zhonggao Wang Zhiwei Hu Jimin Wu Feng Ji Hongtao Wang Yungang Lai Xiang Gao Yachan Ning Chengchao Zhang Zhitong Li Weitao Liang Jianjun Liu | 2015 | Frontiers of Medicine2015,9,1: | 21 |
| 5 | Prevalence of clonorchiasis in patients with gastrointestinal disease: A Korean nationwide multicenter survey显示文摘AIM: To investigate prevalence of Clonorchis sinensis in patients with gastrointestinal symptoms, and the relation of the infection to hepatobiliary diseases in 26 hospitals in Korea.METHODS: Consecutive patients who had been admitted to the Division of Gastroenterology with gastrointestinal symptoms were enrolled from March to April 2005. Of those who had been diagnosed with clonorchiasis, epidemiology and correlation between infection and hepatobiliary diseases were surveyed by questionnaire.RESULTS: Of 3080 patients with gastrointestinal diseases, 396 (12.9%) had clonorchiasis and 1140 patients (37.2%) had a history of eating raw freshwater fish. Of those with a history of raw freshwater fish ingestion, 238 (20.9%) patients had clonorchiasis. Cholangiocarcinoma was more prevalent in C. sinensis-infected patients than non-infected patients [34/396 (8.6%) vs 145/2684 (5.4%), P = 0.015]. Cholangiocarcinoma and clonorchiasis showed statistically significant positive cross-relation (P = 0.008). Choledocholithiasis, cholecystolithiasis, cholangitis, hepatocellular carcinoma, and biliary pancreatitis did not correlate with clonorchiasis.CONCLUSION: Infection rate of clonorchiasis was still high in patients with gastrointestinal diseases in Korea, and has not decreased very much during the last two decades. Cholangiocarcinoma was related to clonorchiasis, which suggested an etiological role for the parasite. | Ho Gak Kim Jimin Han Myung-Hwan Kim Kyu Hyun Cho Im Hee Shin Gwang Ha Kim Jae Seon Kim Jin Bong Kim Tae Nyeun Kim Tae Hyeon Kim Tae Hyo Kim Jae Woo Kim Ji Kon Ryu Young-Soo Moon Jong Ho Moon Sung Jae Park Chan Guk Park Sung-Jo Bang Chang Heon Yang Kyo-Sang Yoo Byung Moo Yoo Kyu Taek Lee Dong Ki Lee Byung Seok Lee Sang Soo Lee Seung Ok Lee Woo Jin Lee Chang Min Cho Young-Eun Joo Gab Jin Cheon Young Woo Choi Jae Bok Chung Yong Bum Yoon | 2009 | World Journal of Gastroenterology2009,15,1: | 15 |
| 6 | Cell-free circulating tumor DNA in cancer显示文摘Cancer is a common cause of death worldwide.Despite significant advances in cancer treatments,the morbidity and mortality are still enormous.Tumor heterogeneity,especially intratumoral heterogeneity,is a significant reason underlying difficulties in tumor treatment and failure of a number of current therapeutic modalities,even of molecularly targeted therapies.The development of a virtually noninvasive 'liquid biopsy' from the blood has been attempted to characterize tumor heterogeneity.This review focuses on cell-free circulating tumor DNA(ctDNA) in the bloodstream as a versatile biomarker.ctDNA analysis is an evolving field with many new methods being developed and optimized to be able to successfully extract and analyze ctDNA,which has vast clinical applications.ctDNA has the potential to accurately genotype the tumor and identify personalized genetic and epigenetic alterations of the entire tumor.In addition,ctDNA has the potential to accurately monitor tumor burden and treatment response,while also being able to monitor minimal residual disease,reducing the need for harmful adjuvant chemotherapy and allowing more rapid detection of relapse.There are still many challenges that need to be overcome prior to this biomarker getting wide adoption in the clinical world,including optimization,standardization,and large multicenter trials. | Zhen Qin Vladimir A.Ljubimov Cuiqi Zhou Yunguang Tong Jimin Liang | 2016 | Chinese Journal of Cancer2016,35,5: | 14 |
| 7 | Stepwise advance of the Mu Us Desert since late Pliocene:Evidence from a red clay-loess record显示文摘Analyses of paleomagnetic polarity reversals, magnetic susceptibility and grain size on the red clay-loess sequence, about 280 m thick, at Jingbian show that this sequence contains most of the stratigraphic units recorded in the standard red clay-loess sections of the Loess Plateau over the past 3.5 Ma. Using sand particle percentage ( > 63 μm%) of the eolian sequence as a proxy indicator of desert extent and aridity in the dust source regions, it is found that during the past 3.5 Ma, there are three important climatic events indicating the advance of the Mu Us Desert. The events occurred at about 2.6, 1.1 and 0.6 MaBP, respectively. The stepwise advance of the Mu Us Desert may be linked closely to increase in global ice volume and uplift of the Tibetan Plateau in the late Cenozoic. | Zhongli Ding Jimin Sun Dongsheng Liu | 1999 | Chinese Science Bulletin1999,44,13: | 12 |
| 8 | 8.2ka BP冷气候事件确实在中国发生过吗?显示文摘综合迄今中国境内湖泊沉积、冰心、泥炭、石笋、古土壤和洪积物获得的全新世数据及序列表明,早全新世气候变化是不稳定的,至少存在一次明显的降温事件,且表现为区域差异,其根本原因是受不同气候系统、复杂地形(特别是高原)的制约。但是,将不同地区、存在于9.0~7.6ka BP期间、500a至200a不等的气候突变或波动和记录与环北大西洋的8.2ka BP气候突变事件相对应,并归因于Laurentide冰盖的崩塌冰融水注入北大西洋造成的降温显然是草率的。中国主要地处季风气候区,加上目前我们所得序列的不同年代、样品精度、不同材料以及缺乏对气候事件前后精确的年代数据的控制,对于中国是否存在相同的或相似的气候降温事件是值得商榷的。如果真的存在,其时间跨度、降温幅度以及诱发机制又是什么,均需进一步认真研究。 | 金章东 Jimin YU 吴艳宏 王苏民 | 2007 | 地质论评2007,53,5: | 11 |
| 9 | Degradation and detoxification of microcystin-LR in drinking water by sequential use of UV and ozone显示文摘Microcystins (MCs) produced by cyanobacteria are strong hepatotoxins and classified as possible carcinogens.MCs pose a considerable threat to human health through tainted drinking and surface waters.Herein filtrated water from a waterworks in Harbin,China,was spiked with microcystin-LR (MC-LR) extracted from a toxic scum of microcystis aeruginosa,and the spiked sample waters were treated using UV irradiation with consequent ozonation process (UV/O3),compared with ozonation at a dose range commonly applied in water treatment plants,UV irradiation at 254 nm and UV irradiation combined with ozonation (UV+O3),respectively.The remaining of toxins were analyzed using high-performance liquid chromatography and also determined using a protein phosphatase type 2A inhibition assay,which was utilized to evaluate the reduction in toxicity.Results indicated that in comparison to other three processes (O3,UV,and UV+O3),UV/O 3 process could effectively decrease both the concentration and toxicity of MC-LR at 100 μg/L level after 5 min UV irradiation with consequent 5 min ozonation at 0.2 mg/L (below 1 μg/L),while 0.5 mg/L ozone dose was required for the level below 0.1 μg/L.The addition of an UV treatment step to the existing treatment train may induce significant transformation of micropollutants and breaks down the natural organic matters into moieties unfavorable for ozone decomposition,stabilizing the ozone residual.These findings suggested that sequential use of UV and ozone may be a suitable method for the removal of these potentially hazardous microcystins from drinking water. | Xiaowei Liu Zhonglin Chen Nan Zhou Jimin Shen Miaomiao Ye | 2010 | Journal of Environmental Sciences2010,22,12: | 11 |
| 10 | Enhanced vasoconstriction to α_1 adrenoceptor autoantibody in spontaneously hypertensive rats显示文摘Autoimmune activities have been implicated in the pathogenesis of hypertension.High levels of autoantibodies against the second extracellular loop of α1-adrenoceptor(α1-AR autoantibody,α1-AA) are found in patients with hypertension,and α1-AA could exert a α1-AR agonist-like vasoconstrictive effect.However,whether the vasoconstrictive effect of α1-AA is enhanced in hypertension is unknown.Using aortic rings of spontaneously hypertensive rats(SHR) and normotensive Wistar-Kyoto(WKY) rats,we observed the vasoconstrictive responses to α1-AA with phenylephrine(α1-AR agonist) as a positive control drug.Aortic nitrotyrosine levels were also measured by ELISA and immunohistochemistry.The results showed that the aortic constrictive responses to α1-AA and phenylephrine(both 1 nmol L-1-10 μmol L-1) were greater in SHR than in WKY rats.Endothelial denudation or L-NAME(a non-selective NOS inhibitor)(100 μmol L-1) increased α1-AA- or phenylephrine-induced vasoconstrictions both in SHR and WKY.However,selective iNOS inhibitor 1400W(10 μmol L-1) enhanced the α1-AA-induced aortic constriction in WKY,but not in SHR.The aortic nitrotyrosine level was significantly higher in SHR than WKY,as shown by both ELISA and immunohistochemistry.These results indicate that the vasoconstrictive response to α1-AA is enhanced in SHR,and this altered responsiveness is due to endothelial dysfunction and decreased NO bioavailability.The study suggests an important role of α1-AR autoimmunity in the pathogenesis and management of hypertension especially in those harboring high α1-AA levels. | YAN Li TAN XiaoQiu CHEN WenXuan ZHU Hong CAO JiMin LIU HuiRong | 2014 | Science China(Life Sciences)2014,57,7: | 10 |
| 11 | Outcome of Stretta radiofrequency and fundoplication for GERD- related severe asthmatic symptoms显示文摘这研究试图与 Stretta radiofrequency (SRF ) 或 laparoscopic 尼森式小屋 fundoplication (LNF ) 调查治疗的结果。137 gastroesophageal 倒流疾病(GERD ) 的一个总数为气喘对医疗不充分地作出回应的有严重气喘的症状的病人被调查。病人在 SRF 以后在 1 年和 5 年上面被跟随(n = 82 ) 或 LNF (n = 55 ) 治疗。盖住 29 的一张问询表联系了症状,药使用被采用。消化,呼吸,并且 ear-nose-throat (ENT ) 症状分数显著地在 antireflux 治疗以后减少了。症状分数分别地从 17.2 敲獳癩? 晥敦瑣 ? 潰獳扩祬戠 ? 湩捡楴慶楴杮琠敨 ? 慣整楮 ? 变化了 ???? 湡 ???? 瑫猠杩慮楬杮瀠瑡睨祡? 牯戠 ? 污整楲杮? 慣整楮 ?? 慣桤牥湩洭摥慩整 ? 散汬' 獩 D? 摡敨楳湯椠 ? 牢慥瑳挠湡散 ?散汬s 吗? | Zhiwei Hu Jimin Wu Zhonggao Wang Yu Zhang Weitao Liang Chao Yan | 2015 | Frontiers of Medicine2015,9,4: | 10 |
| 12 | First dark matter search results from the PandaX-Ⅰ experiment显示文摘We report on the first dark-matter(DM)search results from PandaX-I,a low threshold dual-phase xenon experiment operating at the China JinPing Underground Laboratory.In the 37-kg liquid xenon target with 17.4 live-days of exposure,no DM particle candidate event was found.This result sets a stringent limit for low-mass DM particles and disfavors the interpretation of previously-reported positive experimental results.The minimum upper limit,3.7×10-44cm2,for the spin-independent isoscalar DM-particle-nucleon scattering cross section is obtained at a DM-particle mass of 49 GeV/c2at 90%confidence level. | XIAO MengJiao XIAO Xiang ZHAO Li CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HU Jie HUANG XingTao JI XiangDong JU YongLin LEI SiAo LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing STEPHENSON Scott TAN AnDi TARL Greg WANG HongWei WANG JiMin WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIE PengWei YOU YingHui ZENG XiongHui ZHANG Hua ZHANG Tao ZHU ZhongHua | 2014 | Science China(Physics,Mechanics & Astronomy)2014,57,11: | 10 |
| 13 | Cardiovascular magnetic resonance imaging findings in children with myocarditis显示文摘 | Liu Guiying Yang Xi Su Ying Xu Jimin Wen Zhaoying | 2014 | Chinese Medical Journal2014,,21: | 9 |
| 14 | A reconnaissance of Cu isotopic compositions of hydrothermal vein-type copper deposit, Jinman, Yunnan, China显示文摘The Jinman deposit is a low-temperature hydrothermal vein-type copper deposit, which occurs along faults and fractures within Middle Jurassic sandstone and mudstone units of the Lanping-Simao Mesozoic-Cenozoic basin of Yunnan Province. In this note, we report for the first time the Cu isotopic compositions of Cu-sulfides from the Jinman deposit. The data show large variations and low δ65Cu values of -3.70‰ to +0.30‰, which are in sharp con-trast to the δ65Cu values of high-temperature mag-matic-hydrothermal copper deposits (-0.62‰ to +0.40‰) and the modern ocean-floor massive sulfide deposits (-0.48‰ to +1.15‰). It is suggested that the Cu isotope fractionation at Jinman is affected mainly by the following factors, i.e. a low temperature of ore formation (150-286℃); a sedimen-tary source for ore materials; various stages of ore deposition; and involvement of organic matter in the ore-forming proc-esses. | JIANG Shaoyong Jon Woodhead YU Jimin PAN Jiayong LIAO Oiling WU Nanping | 2002 | Chinese Science Bulletin2002,47,3: | 9 |
| 15 | Practices on rockburst prevention and control in headrace tunnels of Jinping II hydropower station显示文摘Rockburst problems induced by high in-situ stresses were prominent during construction of the headrace tunnels of Jinping II hydropower station. The rockbursts occurred in various forms, and it is necessary to take pertinent measures for integrated prevention and control of rockbursts. In view of the rockburst characteristics during tunnel construction of Jinping II hydropower station, the engineering geological conditions were presented, and the features, mechanisms and forms of rockbursts observed during construction were analyzed in detail. A large number of scientific researches, experiments and applications were conducted. Multiple measures were adopted to prevent and control rockbursts, including the prediction and early warning measures, stress relief by blasting in advance, optimized blasting design and optimized tunnel support in the tunnel sections prone to strong rockbursts. The effectiveness of these prevention and control measures was evaluated. Experiences have been accumulated through a great number of helpful explorations and practices for rockburst prevention and control. A comprehensive rockburst prevention and control system has been gradually established. | Jimin Wang Xionghui Zeng Jifang Zhou | 2012 | Journal of Rock Mechanics and Geotechnical Engineering2012,4,3: | 8 |
| 16 | The internalization pathway,metabolic fate and biological effect of superparamagnetic iron oxide nanoparticles in the macrophage-like RAW264.7 cell显示文摘The potential applications of superparamagnetic iron oxide nanoparticles (SPIONs) in several nanomedical fields have attracted intense interest based on the cell-nano interaction. However, the mechanisms underlying cell uptake, the intracellular trail, final fate and the biological effects of SPIONs have not yet been clearly elucidated. Here, we showed that multiple endocytic pathways were involved in the internalization process of SPIONs in the RAW264.7 macrophage. The internalized SPIONs were biocompatible and used three different metabolic pathways: The SPIONs were distributed to daughter cells during mitosis; they were degraded in the lysosome and free iron was released into the intracellular iron metabolic pool; and, the intact SPIONs were potentially exocytosed out of the cells. The internalized SPIONs did not induce cell damage but affected iron metabolism, inducing the upregulation of ferritin light chain at both the mRNA and protein levels and ferroportin 1 at the mRNA level. These results may contribute to the development of nanobiology and to the safe use of SPIONs in medicine when administered as a contrast medium or a drug delivery tool. | GU JingLi XU HaiFei HAN YeHua DAI Wei HAO Wei WANG Chun Yu GU Ning XU HaiYan CAO JiMin | 2011 | Science China(Life Sciences)2011,54,9: | 8 |
| 17 | Zacopride selectively activates the Kir2.1 channel via a PKA signaling pathway in rat cardiomyocytes显示文摘We recently reported that zacopride is a selective inward rectifier potassium current (IK1 ) channel agonist, suppressing ventricular arrhythmias without affecting atrial arrhythmias. The present study aimed to investigate the unique pharmacological properties of zacopride. The whole-cell patch-clamp technique was used to study IK1 currents in rat atrial myocytes and Kir2.x currents in human embryonic kidney (HEK)-293 cells transfected with inward rectifier potassium channel (Kir)2.1, Kir2.2, Kir2.3, or mutated Kir2.1 (at phosphorylation site S425L). Western immunoblots were performed to estimate the relative protein expression levels of Kir2.x in rat atria and ventricles. Results showed that zacopride did not affect the IK1 and transmembrane potential of atrial myocytes. In HEK293 cells, zacopride increased Kir2.1 homomeric channels by 40.7%±9.7% at 50 mV, but did not affect Kir2.2 and Kir2.3 homomeric channels, and Kir2.1-Kir2.2, Kir2.1-Kir2.3 and Kir2.2-Kir2.3 heteromeric channels. Western immunoblots showed that similar levels of Kir2.3 protein were expressed in rat atria and ventricles, but atrial Kir2.1 protein level was only 25% of that measured in the ventricle. In addition, 5-hydroxytryptamine (5-HT) 3 receptor was undetectable, whereas 5-HT 4 receptor was weakly expressed in HEK293 cells. The Kir2.1-activating effect of zacopride in these cells was abolished by inhibition of protein kinase A (PKA), but not PKC or PKG. Furthermore, zacopride did not activate the mutant Kir2.1 channel in HEK293 cells but selectively activated the Kir2.1 homomeric channel via a PKA-dependent pathway, independent to that of the 5-HT receptor. | ZHANG Li LIU QingHua LIU ChengFang ZHAI XuWen FENG QiLong XU RuiLing CUI XiangLi ZHAO ZhiQing CAO JiMin WU BoWei | 2013 | Science China(Life Sciences)2013,56,9: | 7 |
| 18 | Characteristics of distribution of Mycobacterium tuberculosis lineages in China显示文摘The genotyping methods of Mycobacterium tuberculosis would dramatically improve our understanding of the molecular epidemiology of tuberculosis. 3,929 isolates, from a National Survey of Drug-Resistant Tuberculosis in 2007 in China, were successfully genotyped by large sequence polymorphisms and 15 loci variable number tandem repeats. We found that 2,905(2,905/3,929, 73.9%) cases belonged to Lineage 2, dominated in the east and central regions, 975 cases(975/3,929, 24.8%) were Lineage 4, highly prevailed in the west regions, and 36 and 13 cases were Lineage 3 and Lineage 1, respectively. We also explored the associations between lineages(Lineage 2 vs. Lineage 4) and clinical characteristics by logistic regression. For Lineage 2, the risk factors were Han-ethnicity population and fever. However, for Lineage 4, they were occupation(farmer), and degree of education(non-literate). Fully understanding of the distribution of Mycobacterium tuberculosis lineage and its risk factors would play a critical role in tuberculosis prevention, control, and treatment. | Haixia Chen Li He Chao Cai Jingyi Liu Junnan Jia Liang Ma Hairong Huang Lixia Wang Xumin Ni Jimin Gao Weimin Li | 2018 | Science China(Life Sciences)2018,61,6: | 7 |
| 19 | Pedogenic carbonate isotope record of vegetational evolution since late Miocene in Loess Plateau显示文摘lsotopic analyses for paleovegetational evolution have been carried out on samples of the pedogenic carbonate nodules in the Red Clay-Loess sequence at Lingtai (35°N), the Loess Plateau. Stable carbon isotopic composition indicates that ( ⅰ ) C4 plants might be present at least by7.0 Ma; ( ⅱ ) C4 plants expanded gradually between ~4.0 and ~3.2 Ma, and their biomass fraction was up to 50%; and ( ⅲ ) the biomass of C4 vegetation since ~2.0 Ma seems to have been decreased to the level (about 20%) before 4.0 Ma. C4 plant expansion at Lingtai cannot be fully understood with the 'global C4 expansion' model because it occurred much later up to 3.0 Ma than in Pakistan, which indicates that some changes in the regional climatic system may also contribute to C3/C4 shift except changes in atmospheric CO2 concentrations and temperature. The latitudinal zone for C3/C4 transition seems to move southwards slightly in East Asia, compared with the case in North America where 37°N is the ideal | Shiling Yang Zhongli Ding Zhaoyan Gu Jimin Sun Shangfa Xiong | 1999 | Chinese Science Bulletin1999,44,11: | 6 |
| 20 | Chronology of environmental events over East Asia during the past 130 ka显示文摘In the transitional region between the Loess Plateau and deserts, 4 sections located respectively at Yuling, Hengshan, Dingbian and Huining of China are studied. The high-resolution paleoclimatic records obtained show that environmental events on varying time scales have happened over East Asia. These events are dated with the time scales established using the recently-developed approach of Automatic Orbital Tuning. This leads to the establishment of the chronology of the environmental events. | Zhongli Ding Jimin Sun Zhiwei Yu Dongsheng Liu | 1998 | Chinese Science Bulletin1998,43,21: | 6 |