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1746篇 您的检索式:作者名="Gang YANG"
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1A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)显示文摘The genome sequence of the Severe Acute Respiratory Syndrome (SARS)-associated virus provides essential information for the identification of pathogen(s), exploration of etiology and evolution, interpretation of transmission and pathogenesis, development of diagnostics, prevention by future vaccination, and treatment by developing new drugs. We report the complete genome sequence and comparative analysis of an isolate (BJ01) of the coronavirus that has been recognized as a pathogen for SARS. The genome is 29725 nt in size and has 11 ORFs (Open Reading Frames). It is composed of a stable region encoding an RNA-dependent RNA polymerase (composed of 2 ORFs) and a variable region representing 4 CDSs (coding sequences) for viral structural genes (the S, E, M, N proteins) and 5 PUPs (putative uncharacterized proteins). Its gene order is identical to that of other known coronaviruses. The sequence alignment with all known RNA viruses places this virus as a member in the family of Coronaviridae. Thirty putative substitutions have been identified by comparative analysis of the 5 SARS- associated virus genome sequences in GenBank. Fifteen of them lead to possible amino acid changes (non-synonymous mutations) in the proteins. Three amino acid changes, with predicted alteration of physical and chemical features, have been detected in the S protein that is postulated to beinvolved in the immunoreactions between the virus and its host. Two amino acid changes have been detected in the Mprotein, which could be related to viral envelope formation. Phylogenetic analysis suggests the possibility of non-human origin of the SARS-associated viruses but provides noevidence that they are man-made. Further efforts should focus on identifying the etiology of the SARS-associated virus and ruling out conclusively the existence of otherpossible SARS-related pathogen(s).QIN E'de ZHU Qingyu YU Man FAN Baochang CHANG Guohui SI Bingyin YANG Bao PENG Wenming JIANG Tao LIU Bohua DENG Yongqiang LIU Hong ZHANG Yu WANG Cui LI Yuquan GAN Yonghua LI Xiaoyu L Fushuang TAN Gang CAO Wuchun, YANG Ruifu Institute of Microbiology and Epidemiology, Chinese Academy of Military Medical Sciences, Beijing 100071, China WANG Jian, LI Wei, XU Zuyuan, LI Yan, WU Qingfa, LIN Wei, CHEN Weijun, TANG Lin, DENG Yajun, HAN Yujun, LI Changfeng, LEI Meng, LI Guoqing, LI Wenjie, L Hong, SHI Jianping, TONG Zongzhong, ZHANG Feng, LI Songgang, LIU Bin, LIU Siqi, DONG Wei, WANG Jun, Gane K-S Wong, YU Jun & YANG Huanming* Beijing Genomics Institute, Chinese Academy of Sciences, Beijing 101300 National Center for Genome Information, Beijing 101300, China 2003Chinese Science Bulletin2003,48,10:121
2Effects of different resuscitation fluid on severe acute pancreatitis显示文摘AIM: To compare effects of different resuscitation fluid on microcirculation, inflammation, intestinal barrier and clinical results in severe acute pancreatitis (SAP). METHODS: One hundred and twenty patients with SAP were enrolled at the Pancreatic Disease Institute between January 2007 and March 2010. The patients were randomly treated with normal saline (NS group), combination of normal saline and hydroxyethyl starch (HES) (SH group), combination of normal saline, hydroxyethyl starch and glutamine (SHG group) in resuscitation. The ratio of normal saline to HES in the SH and SHG groups was 3:1. The glutamine (20% glutamine dipeptide, 100 mL/d) was supplemented into the resuscitation liquid in the SHG group. Complications and outcomes including respiratory and abdominal infection, sepsis, abdominal hemorrhage, intra-abdominal hypertension, abdominal compartment syndrome (ACS), renal failure, acute respiratory distress syndrome (ARDS), multiple organ dysfunction syndrome (MODS), operation intervention, length of intensive care unit stay, length of hospital stay, and mortality at 60 d were compared. Moreover, blood oxygen saturation (SpO 2 ), gastric intramucosal pH value (pHi), intra-abdominal pressure (IAP), inflammation cytokines, urine lactulose/mannitol (L/M) ratio, and serum endotoxin were investigated to evaluate the inflammatory reaction and gut barrier. RESULTS: Compared to the NS group, patients in the SH and SHG groups accessed the endpoint more quickly (3.9 ± 0.23 d and 4.1 ± 0.21 d vs 5.8 ± 0.25 d, P < 0.05) with less fluid volume (67.26 ± 28.53 mL/kg/d, 61.79 ± 27.61 mL/kg per day vs 85.23 ± 21.27 mL/kg per day, P < 0.05). Compared to the NS group, incidence of renal dysfunction, ARDS, MODS and ACS in the SH and SHG groups was obviously lower. Furthermore, incidence of respiratory and abdominal infection was significantly decreased in the SH and SHG groups, while no significant difference in sepsis was seen. Moreover, less operation time was needed in the SH and SHG group than the NS group, but the difference was not significant. The mortality did not differ significantly among these groups. Blood SpO 2 and gastric mucosal pHi in the SH and SHG groups increased more quickly than in the NS group, while IAP was significantly decreased in the SH and SHG group. Moreover, the serum tumor necrosis factor-α, interleukin-8 and C-reactive protein levels in the SH and SHG groups were obviously lower than in the NS group at each time point. Furthermore, urine L/M ratio and serum endotoxin were significantly lower in the SH group and further decreased in the SHG group.CONCLUSION: Results indicated that combination of normal saline, HES and glutamine are more efficient in resuscitation of SAP by relieving inflammation and sustaining the intestinal barrier.Gang Zhao Jun-Gang Zhang He-Shui Wu Jin Tao Qi Qin Shi-Chang Deng Yang Liu Lin Liu Bo Wang Kui Tian Xiang Li Shuai Zhu Chun-You Wang 2013World Journal of Gastroenterology2013,19,13:56
3Cold-chain food contamination as the possible origin of COVID-19 resurgence in Beijing显示文摘COVID-19,caused by SARS-CoV-2[1,2],has been contained in China through stringent non-pharmaceutical interventions.Border control and quarantine have effectively prevented the virus from being spread by infected travellers,but the risk of resurgence caused by other routes of introduction and transmission remains unclear,and current strategies to prevent resurgence could be flawed.Since July,SARS-CoV-2 RNA contaminations in frozen food imported from countries with ongoing epidemics have been reported in nine provinces in China[3,4].However,there is no robust evidence of COVID-19 outbreaks initiated by environmentto-human transmission.Here we add to evidence of such transmission by investigating the recent COVID-19 resurgence in Beijing.Xinghuo Pang Lili Ren Shuangsheng Wu Wentai Ma Jian Yang Lin Di Jie Li Yan Xiao Lu Kang Shichang Du Jing Du Jing Wang Gang Li Shuguang Zhai Lijuan Chen Wenxiong Zhou Shengjie Lai Lei Gao Yang Pan Quanyi Wang Mingkun Li Jianbin Wang Yanyi Huang Jianwei Wang COVID-19 Field Response Group COVID-19 Laboratory Testing Group 2020National Science Review2020,7,12:51
4Fast-track rehabilitation program vs conventional care after colorectal resection:A randomized clinical trial显示文摘AIM:To compare the fast-track rehabilitation program and conventional care for patients after resection of colorectal cancer.METHODS:One hundred and six consecutive patients who underwent fast-track rehabilitation program were encouraged to have early oral feeding and movement for early discharge,while 104 consecutive patients underwent conventional care after resection of colorectal cancer.Their gastrointestinal functions,postoperative complications and hospital stay time were recorded.RESULTS:The restoration time of gastrointestinal functions in the patients was significantly faster after fasttrack rehabilitation program than after conventional care(2.1 d vs 3.2 d,P < 0.01).The percentage of patients who developed complications was significantly lower 30 d after fast-track rehabilitation program than after conventional care(13.2% vs 26.9%,P < 0.05).Also,the percentage of patients who had general complications was significantly lower 30 d after fast-track rehabilitation program than after conventional care(6.6% vs 15.4%,P < 0.05).The postoperative hospital stay time of the patients was shorter after fast-track rehabilitation program than after conventional care(5 d vs 7 d,P < 0.01).No significant difference was observed in the readmission rate 30 d after fast-track rehabilitation program and conventional care(3.8% vs 8.7%).CONCLUSION:The fast-track rehabilitation program can significantly decrease the complications and shorten the time of postoperative hospital stay of patients after resection colorectal cancer.Gang Wang Zhi-Wei Jiang Jing Xu Jian-Feng Gong Yang Bao Li-Fei Xie Jie-Shou Li 2011World Journal of Gastroenterology2011,17,5:43
5Epoxy asphalt concrete paving on the deck of long-span steel bridges显示文摘It is the first systematic research in the world on the composition design of epoxy asphalt concrete as pav- ing material. Material characteristics and service perform- ance of mixture, fatigue resistance characteristics of epoxy asphalt concrete by the fatigue test of complex beam have also been described. This research indicates that epoxy as-phalt concrete is a good type of paving material. Research results have been applied successfully in the paving of steel deck of the Second Nanjing Yangtze River Bridge (SNYRB). It provides a new paving type for long-span steel bridges of China and has a bright application prospect.HUANG Wei, QIAN Zhendong, CHEN Gang & YANG Jun Transportation College, Southeast University, Nanjing 210096, China Correspondence should be addressed to Huang Wei (e-mail: hwei@ seu.edu.cn) 2003Chinese Science Bulletin2003,48,21:47
6JMJD3 is a histone H3K27 demethylase显示文摘组蛋白甲基化是参予细胞的过程的一个多样的数组的重要 epigenetic 现象并且被发现了与癌症被联系。几的 Recentidentification 嘘一 demethylases 证明了那嘘一甲基化是一个可逆过程。通过一条候选人途径,我们化学上有简历作为 H3K27demethylase 识别了 JMJD3。进 HeLa 房间的 JMJD3 的 Transfection 引起了整齐的乙醇 H3K27 的特定的减小,但是没在 di- 和单音的甲基 H3K27 上有效果,或嘘 H3K4 和 H3K9 上的一离氨酸 methylations。Theenzymatic 活动要求 JmjC 域和被建议了为余因子绑定重要的保存组氨酸。试管内生物化学的实验证明那 JMJD3directly 催化 demethylation。另外,我们发现 JMJD3 起来在前列腺癌症,和它的表示调整了在变形前列腺癌症是更高的。因此,我们作为能够把整齐的乙醇组从移开的 ademethylase 识别了 JMJD3 嘘一 H3 离氨酸 27 并且起来在前列腺癌症调整了。Yang Xiang Ziqi Zhu Gang Han Hanqing Lin Longyong Xu Charlie Degui Chen 2007Cell Research2007,17,10:37
7Sevoflurane postconditioning reduces myocardial reperfusion injury in rat isolated hearts via activation of PI3K/Akt signaling and modulation of Bcl-2 family proteins显示文摘Sevoflurane postconditioning reduces myocardial infarct size.The objective of this study was to examine the role of the phosphatidylinositol-3-kinase(PI3K)/Akt pathway in anesthetic postconditioning and to determine whether PI3K/Akt signaling modulates the expression of pro-and antiapoptotic proteins in sevoflurane postconditioning.Isolated and perfused rat hearts were prepared first,and then randomly assigned to the following groups:Sham-operation(Sham),ischemia/reperfusion(Con),sevoflurane postconditioning(SPC),Sham plus 100 nmol/L wortmannin(Sham+Wort),Con+Wort,SPC+Wort,and Con+dimethylsulphoxide(DMSO).Sevoflurane postconditioning was induced by administration of sevoflurane(2.5%,v/v) for 10 min from the onset of reperfusion.Left ventricular developed pressure(LVDP),left ventricular end-diastolic pressure(LVEDP),maximum increase in rate of LVDP(+dP/dt),maximum decrease in rate of LVDP(?dP/dt),heart rate(HR),and coronary flow(CF) were measured at baseline,R30 min(30 min of reperfusion),R60 min,R90 min,and R120 min.Creatine kinase(CK) and lactate dehydrogenase(LDH) were measured after 5 min and 10 min reperfusion.Infarct size was determined by triphenyltetrazolium chloride staining at the end of reperfusion.Total Akt and phosphorylated Akt(phospho-Akt),Bax,Bcl-2,Bad,and phospho-Bad were determined by Western blot analysis.Analysis of variance(ANOVA) and Student-Newman-Keuls' test were used to investigate the significance of differences between groups.The LVDP,±dP/dt,and CF were higher and LVEDP was lower in the SPC group than in the Con group at all points of reperfusion(P<0.05).The SPC group had significantly reduced CK and LDH release and decreased infarct size compared with the Con group [(22.9±8)% vs.(42.4±9.4)%,respectively;P<0.05].The SPC group also had increased the expression of phospho-Akt,Bcl-2,and phospho-Bad,and decreased the expression of Bax.Wortmannin abolished the cardioprotection of sevoflurane postconditioning.Sevoflurane postconditioning may protect the isolated rat heart.Activation of PI3K and modulation of the expression of pro-and antiapoptotic proteins may play an important role in sevoflurane-induced myocardial protection.Li-na YU Jing YU Feng-jiang ZHANG Mei-juan YANG Ting-ting DING Jun-kuan WANG Wei HE Tao FANG Gang CHEN Min YAN 2010Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2010,11,9:36
8Preventive effect of ulinastatin and gabexate mesylate on post-endoscopic retrograde cholangiopancreatography pancreatitis显示文摘背景 endoscopic 以后后退 cholangiopancreatography 胰腺炎(锐气) 被认为是之一使人烦恼的复杂并发症内视镜后退 cholangiopancreatography (ERCP ) 。在锐气上评估 ulinastatin 和 gabexate mesylate (美国通用汽车公司) 的预防效果的使随机化的控制试用的结果是矛盾的。现在的学习被设计与使随机化的控制试用(RCT ) 的元分析在锐气上评估 ulinastatin 和美国通用汽车公司的预防效果 .Methods 五个电子数据库被在找在锐气上评估 ulinastatin 和美国通用汽车公司的预防效果的 RCT。概括效果被估计,方法由 Cochrane Collaboration.Results 推荐了包含 5105 个参加者的 12 研究在我们的元分析被包括。ulinastatin 的管理减少了仅仅在足够的剂量的锐气的发生(或, 0.39;95% CI, 0.19 ~ 0.81;P=0.01 ) 。需要到对待(NNT ) 的数字是 6。并且 ulinastatin 的管理也减少了 post-ERCP hyperamylasemia (PEHA ) 的发生(或, 0.40;95% CI, 0.28 ~ 0.58;P < 0.000 01 ) 。高剂量的美国通用汽车公司的慢注入为锐气预防是有效的(或, 0.44; 95% CI, 0.25 ~ 0.79;P=0.006 ) ,并且低剂量的美国通用汽车公司的快速的注入也为锐气预防显示出功效(或, 0.37; 95% CI, 0.20 ~ 0.69;P=0.002 ) 。NNT 分别地是 7 和 6。然而,在低剂量并且由慢注入的美国通用汽车公司的管理是无效的(或, 0.99;95% CI, 0.64 ~ 1.55;P=0.98 ) 。美国通用汽车公司的管理有趋势减少 PEHA 率,然而并非到统计意义(或, 0.86;95% CI, 0.73 ~ 1.01;P=0.06 ) 。当低质量的研究被排除时,有二高质量的研究的元分析显示 ulinastatin 没减少锐气的率(或, 0.63;95% CI, 0.32 ~ 1.26;P=0.19 ) 并且 PEHA 发生(或, 0.80;95% CI, 0.31 ~ 2.07;P=0.64 ) 。有六高质量的研究的元分析证明美国通用汽车公司管理减少了锐气发生(或, 0.52;95% CI, 0.29 ~ 0.91; P=0.02 ) 不为 PEHA 预防是有效的(或, 0.88;95% CI, 0.74 ~ 1.04;P=0.12 ).Conclusions Ulinastatin 和美国通用汽车公司可能具有为锐气的预防的价值。美国通用汽车公司应该在高剂量并且由快速的注入被管理。并且 ulinastatin 的剂量应该是足够的。然而,结论不是 overwhelming.More 大样品的尺寸和高质量的 RCT 仍然被需要阐明二药的政府是否确实穿上预防效果锐气。ZHANG Zhi-feng YANG Ning ZHAO Gang ZHU Lei ZHU Ying WANG Li-xia 2010Chinese Medical Journal2010,,18:38
9Effects of resource additions on species richness and ANPP in an alpine meadow community显示文摘Aims Theories based on resource additions indicate that plant species richness is mainly determined by the number of limiting resources.However,the individual effects of various limiting resources on species richness and aboveground net primary productivity(ANPP)are less well understood.Here,we analyzed potential linkages between additions of limiting resources,species loss and ANPP increase and further explored the underlying mechanisms.Methods Resources(N,P,K and water)were added in a completely randomized block design to alpine meadow plots in the Qinghai-Tibetan Plateau.Plant aboveground biomass,species composition,mean plant height and light availability were measured in each plot.Regression and analysis of variance were used to analyze the responses of these measures to the different resource-addition treatments.Important Findings Species richness decreased with increasing number of added limiting resources,suggesting that plant diversity was apparently determined by the number of limiting resources.Nitrogen was the most important limiting resource affecting species richness,whereas Pand K alone had negligible effects.The largest reduction in species richness occurred when all three elements were added in combination.Water played a different role compared with the other limiting resources.Species richness increased when water was added to the treatments with N and P or with N,P and K.The decreases in species richness after resource additions were paralleled by increases in ANPP and decreases in light penetration into the plant canopy,suggesting that increased light competitionwas responsible for the negative effects of resource additions on plant species richness.Zhengwei Ren Qi Li Chengjin Chu Luqiang Zhao Jieqi Zhang Dexiecuo Ai Yingbo Yang Gang Wang 2010Journal of Plant Ecology2010,3,1:40
10Summary of Report on Cardiovascular Diseases in China,2012显示文摘The prevalence of cardiovascular diseases(CVDs)is associated with the socioeconomic prosperity,lifestyle changes,accelerated process of ageing and urbanization.The prevalence of CVDs is continuously increasing in China and will remain an upward trend in the next 10 years.CVDs are the leading cause of death for Chinese in both urban area and rural area.WANG Wen HU Sheng Shou KONG Ling Zhi GAO Run Lin ZHU Man Lu WANG Yong Jun WU Zhao Su CHEN Wei Wei YANG Jin Gang MALi Yuan LIU Ming Bo For the editorial board 2014Biomedical and Environmental Sciences2014,27,7:31
11Generation of neural progenitor cells by chemical cocktails and hypoxia显示文摘神经祖先房间(NPC ) 能被定义因素从体的房间导致。这里,我们报导 NPC 能从老鼠被产生由化学鸡尾酒的胚胎的成纤维细胞,也就是 VCR (V, VPA, HDAC 的一个禁止者;C, CHIR99021, GSK-3 kinases 和 R 的一个禁止者, Repsox, TGF-β 的一个禁止者;小径) ,在一个生理的 hypoxic 条件下面。这些导致化学药品的 NPC (ciNPCs ) 类似于鼠标关于他们为在 vitro 并且在 vivo 的不同 neuroectodermal 系的 proliferative 和自我更新的能力,基因表达式侧面,和 multipotency 的导出大脑的 NPC。进一步的实验揭示那种选择有 histone deacetylation,肝糖 synthase kinase,和 TGF-β 的禁止者的鸡尾酒;小径为 ciNPC 正式就职显示出类似的功效。而且, ciNPCs 能也与一样的化学鸡尾酒 VCR 从老鼠尾巴尖端成纤维细胞和人的尿房间被导致。因此,我们的学习证明没有介绍外长的因素,到 NPC 的体的房间的那系特定的变换能被化学鸡尾酒完成。Lin Cheng Wenxlang Hu Binlong Qiu Jian Zhao Yongchun Yu Wuqiang Guan Min Wang Wuzhou Yang Gang Pei 2014Cell Research2014,24,6:32
12Intestinal microbiota pathogenesis and fecal microbiota transplantation for inflammatory bowel disease显示文摘The intestinal microbiota plays an important role in inflammatory bowel disease(IBD).The pathogenesis of IBD involves inappropriate ongoing activation of the mucosal immune system driven by abnormal intestinal microbiota in genetically predisposed individuals.However,there are still no definitive microbial pathogens linked to the onset of IBD.The composition and function of the intestinal microbiota and their metabolites are indeed disturbed in IBD patients.The special alterations of gut microbiota associated with IBD remain to be evaluated.The microbial interactions and hostmicrobe immune interactions are still not clarified.Limitations of present probiotic products in IBD are mainly due to modest clinical efficacy,few available strains and no standardized administration.Fecal microbiota transplantation(FMT)may restore intestinal microbial ho-meostasis,and preliminary data have shown the clinical efficacy of FMT on refractory IBD or IBD combined with Clostridium difficile infection.Additionally,synthetic microbiota transplantation with the defined composition of fecal microbiota is also a promising therapeutic approach for IBD.However,FMT-related barriers,including the mechanism of restoring gut microbiota,standardized donor screening,fecal material preparation and administration,and long-term safety should be resolved.The role of intestinal microbiota and FMT in IBD should be further investigated by metagenomic and metatranscriptomic analyses combined with germfree/human flora-associated animals and chemostat gut models.Zi-Kai Wang Yun-Sheng Yang Ye Chen Jing Yuan Gang Sun Li-Hua Peng 2014World Journal of Gastroenterology2014,20,40:30
13The intracellular mechanism of alpha-fetoprotein promoting the proliferation of NIH 3T3 cells显示文摘AIM The existence and properties of alpha-fetoprotein (AFP) receptor on the surface of NIH 3T3 cells and the effects of AFP on cellular signal transduction pathway were investigated. METHODS The effect of AFP on the proliferation of NIH 3T3 cells was measured by incorporation of 3H-TdR. Receptor-binding assay of 125I-AFP was performed to detect the properties of AFP receptor in NIH 3T3 cells. The influences of AFP on the [cAMP]i and the activities of protein kinase A (PKA) were determined. Western blot was used to detect the change of K-ras P21 protein expression. RESULTS The proliferation of NIH 3T3 cells treated with 0-80 mg/L of AFP was significantly enhanced. The Scatchard analysis indicated that there were two classes of binding sites with KD of 2.722×10-9M (Bmax=12810 sites per cell) and 8.931× 10-SM (Bmax=l19700 sites per cell) respectively. In the presence of AFP (20 mg/L), the content of cAMP and activities of PKA were significantly elevated . The level of K-ras P21 protein was upregulated by AFP at the concentration of 20 mg/L. The monoclonal antibody against AFP could reverse the effects of AFP on the cAMP content, PKA activity and the expression of K-ras p21 gene. CONCLUSION The effect of AFP on the cell proliferation was achieved by binding its receptor to trigger the signal transduction pathway of cAMP-PKA and alter the expression of K- ras p21 gene.MENG SEN LI, PING FENG LI, FBI YI YANG, SHI PENG HE, Guo GUANG DU, GANG LI1 Department of Biochemistry and Molecular Biology, 2 Department of Biophysics, Health Science Center, Peking University, Beijing 100083, China 2002Cell Research2002,12,2:27
14Method of Fault Area & Section Location for Non-solidly Earthed Distribution System显示文摘中国中压配电网以架空线为主,多为小电流系统,单相接地故障占到电网故障总数的80%以上,但中国配网自动化系统基本上没有小电流接地故障定位功能,使配网自动化系统在提高可靠性的作用上大打折扣。给出一种小电流接地故障区段定位新方法,在线路上配置广域相量测量固定测点,获取小电流电网单相接地故障特征信息。基于测点相邻矩阵区段起始测点标识向量和故障路径标识向量概念,提出确定故障区间边界节点算法。物理模拟实验和挂网测试表明:该故障分区分段定位方法能够在线求解小电流接地故障段边界节点,缩小线路维护巡视范围。确定故障区间边界节点算法还可用于确定故障区相关负荷开关,为线路维护和馈线自动化提供依据。ZHENG Guping JIANG Chao LI Gang QI Zheng YANG Yihan 2012中国电机工程学报2012,32,13:28
15Spatio-temporal dynamics of vegetation and its relationship with climate factors Mongolia, China coverage in Inner显示文摘The vegetation coverage dynamics and its relationship with climate factors on different spatial and temporal scales in Inner Mongolia during 2001-2010 were analyzed based on MODIS-NDVI data and climate data.The results indicated that vegetation coverage in Inner Mongolia showed obvious longitudinal zonality,increasing from west to east across the region with a change rate of 0.2/10°N.During 2001-2010,the mean vegetation coverage was 0.57,0.4 and 0.16 in forest,grassland and desert biome,respectively,exhibiting evident spatial heterogeneities.Totally,vegetation coverage had a slight increasing trend during the study period.Across Inner Mongolia,the area of which the vegetation coverage showed extremely significant and significant increase accounted for 11.25% and 29.13% of the area of whole region,respectively,while the area of which the vegetation coverage showed extremely significant and significant decrease accounted for 7.65% and 26.61%,respectively.On inter-annual time scale,precipitation was the dominant driving force of vegetation coverage for the whole region.On inter-monthly scale,the change of vegetation coverage was consistent with both the change of temperature and precipitation,implying that the vegetation growth within a year is more sensitive to the combined effects of water and heat rather than either single climate factor.The vegetation coverage in forest biome was mainly driven by temperature on both inter-annual and inter-monthly scales,while that in desert biome was mainly influenced by precipitation on both the two temporal scales.In grassland biome,the yearly vegetation coverage had a better correlation with precipitation,while the monthly vegetation coverage was influenced by both temperature and precipitation.In grassland biome,the impacts of precipitation on monthly vegetation coverage showed time-delay effects.MU Shaojie YANG Hongfei LI Jianlong CHEN Yizhao GANG Chengcheng ZHOU Wei JU Weimin 2013Journal of Geographical Sciences2013,23,2:28
16Records of the East Asian winter monsoon from the mud area on the inner shelf of the East China Sea since the mid-Holocene显示文摘AMS14C dating and analysis of grain size,major elements and clay minerals were applied to Core MZ01 from the mud area on the inner shelf of the East China Sea.Based on the environmentally sensitive grain size,clay mineral and major element assemblages,the history of the East Asia winter monsoon since the mid-Holocene could be reconstructed.These three proxies,mean grain size(>9.71μm),chemical index of alteration(CIA)and ratio of smectite to kaolinite in particular,show similar fluctuation patterns. Furthermore,10 extreme values corresponding to the contemporary cooling events could be recognized since the mid-Holocene;these extreme values are likely to have been caused by the strengthening of the East Asia winter monsoon.The cooling events correlated well with the results of theδ18O curves of the Dunde ice core and GISP2,which therefore revealed a regional response to global climate change.Four stages of the East Asia winter monsoon were identified,i.e.8300-6300 a BP,strong and unstable;6300-3800 a BP,strong but stable;3800-1400 a BP,weak and unstable;after 1400 a BP,weak but stable.LIU ShengFa SHI XueFa LIU YanGuang QIAO ShuQing YANG Gang FANG XiSheng WU YongHua LI ChaoXin LI XiaoYan ZHU AiMei GAO JingJing 2010Chinese Science Bulletin2010,55,21:25
17Latest Progress of the Chinese Meteorological Satellite Program and Core Data Processing Technologies显示文摘In this paper,the latest progress,major achievements and future plans of Chinese meteorological satellites and the core data processing techniques are discussed.First,the latest three FengYun(FY)meteorological satellites(FY-2H,FY-3D,and FY-4A)and their primary objectives are introduced Second,the core image navigation techniques and accuracies of the FY meteorological satellites are elaborated,including the latest geostationary(FY-2/4)and polar-orbit(FY-3)satellites.Third,the radiometric calibration techniques and accuracies of reflective solar bands,thermal infrared bands,and passive microwave bands for FY meteorological satellites are discussed.It also illustrates the latest progress of real-time calibration with the onboard calibration system and validation with different methods,including the vicarious China radiance calibration site calibration,pseudo invariant calibration site calibration,deep convective clouds calibration,and lunar calibration.Fourth,recent progress of meteorological satellite data assimilation applications and quantitative science produce are summarized at length.The main progress is in meteorological satellite data assimilation by using microwave and hyper-spectral infrared sensors in global and regional numerical weather prediction models.Lastly,the latest progress in radiative transfer,absorption and scattering calculations for satellite remote sensing is summarized,and some important research using a new radiative transfer model are illustrated.Peng ZHANG Qifeng LU Xiuqing HU Songyan GU Lei YANG Min MIN Lin CHEN Na XU Ling Sun Wenguang BAI Gang MA Di XIAN 2019Advances in Atmospheric Sciences2019,36,9:26
18Effect of local wound infiltration with ropivacaine on postoperative pain relief and stress response reduction after open hepatectomy显示文摘AIM To prospectively evaluate the effect of local wound infiltration with ropivacaine on postoperative pain relief and stress response reduction after open hepatectomy.METHODS A total of 56 patients undergoing open hepatectomy were randomly divided into two groups:a ropivacaine group(wound infiltration with ropivacaine solution)and a control group(infiltration with isotonic saline solution).A visual analog scale(VAS)at rest and on movement was used to measure postoperative pain for the first 48 h after surgery.Mean arterial pressure(MAP),heart rate(HR),time to bowel recovery,length of hospitalization after surgery,cumulative sufentanil consumption,and incidence of nausea and vomiting were compared between the two groups.Surgical stress hormones(epinephrine,norepinephrine,and cortisol)were detected using enzyme-linked immunosorbent assay,and the results were compared. RESULTS VAS scores both at rest and on movement at 24 h and48 h were similar between the two groups.Significantly lower VAS scores were detected at 0,6,and 12 h in the ropivacaine group compared with the control group(P<0.05 for all).MAP was significantly lower at 6,12,and 24 h(P<0.05 for all);HR was significantly lower at 0,6,12,and 24 h(P<0.05 for all);time to bowel recovery and length of hospitalization after surgery(P<0.05 for both)were significantly shortened;and cumulative sufentanil consumption was significantly lower at 6,12,24,and 36 h(P<0.05 for all)in the ropivacaine group than in the control group,although the incidence of nausea and vomiting showed no significant difference between the two groups.The levels of epinephrine,norepinephrine,and cortisol were significantly lower in the ropivacaine group than in the control group at 24 and 48 h(P<0.01 for all). CONCLUSION Local wound infiltration with ropivacaine after open hepatectomy can improve postoperative pain relief,reduce surgical stress response,and accelerate postoperative recovery.Jing-Xian Sun Ke-Yun Bai Yan-Feng Liu Gang Du Zhi-Hao Fu Hao Zhang Jin-Huan Yang Ben Wang Xiu-Yu Wang Bin Jin 2017World Journal of Gastroenterology2017,23,36:25
19Identification of higenamine in Radix Aconiti Lateralis Preparata as a beta2-adrenergic receptor agonist显示文摘瞄准:屏蔽 beta2 肾上腺素能的受体(从同样潜在的药为气喘带使用敏感基于房间的收缩筋试金的根值 Aconiti Lateralis Preparata (RALP ) 的 β 2-AR) 收缩筋。方法:β 2-AR 基因被汉语稳定地表示仓鼠卵巢(CHO ) 房间稳定地也表示周期的腺苷单音的磷酸盐(安培) 反应连接元素的提高的绿荧光灯的蛋白质记者基因。房间被用来从高效的液体屏蔽收缩筋 RALP 的一篇摘录的色析法的部分。有最高的活动的部分为进一步复合的隔离和结构活动关系的学习被选择。它的活跃混合物被层析和集体 spectrometry 进一步识别。结果:RALP 的粗略的摘录的指导 Bioactivity 的分别导致了有效混合物的隔离和描述,也就是 hignamine。它能 dose-dependently 与 EC 50 价值与醋胆素放松孤立的畿尼猪气管长带预约离子(2.60 ± 0 .36 ) × 10 −5 mol/L。进一步,在 vivo,研究也显示了那 hignamine 能保护组织安在畿尼猪劝诱延长气喘的潜伏期的试验性的气喘模型。结论:作为在 RALP 的摘录存在的 β 2-AR 收缩筋, Hignamine 是贡献 bronchoconstriction 的成功的消除的关键混合物。Gang BAI Yang YANG Qian SHI Ze LIU Qi ZHANG Yuan-yuan ZHU 2008Acta Pharmacologica Sinica2008,29,10:24
20Identification of anti-asthmatic compounds in Pericarpium citri reticulatae and evaluation of their synergistic effects显示文摘Qian SHI Ze LIU Yang YANG Peng GENG Yuan-yuan ZHU Qi ZHANG Fang BAI Gang BAI 2009Acta Pharmacologica Sinica2009,30,5:23
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