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| 1 | Monitoring the impact of climate change and human activities on grassland vegetation dynamics in the northeastern Qinghai-Tibet Plateau of China during 2000–2015显示文摘Climate change and human activities can influence vegetation net primary productivity(NPP), a key component of natural ecosystems. The Qinghai-Tibet Plateau of China, in spite of its significant natural and cultural values, is one of the most susceptible regions to climate change and human disturbances in the world. To assess the impact of climate change and human activities on vegetation dynamics in the grassland ecosystems of the northeastern Qinghai-Tibet Plateau, we applied a time-series trend analysis to normalized difference vegetation index(NDVI) datasets from 2000 to 2015 and compared these spatiotemporal variations with trends in climatic variables over the same time period. The constrained ordination approach(redundancy analysis) was used to determine which climatic variables or human-related factors mostly influenced the variation of NDVI. Furthermore, in order to determine whether current conservation measures and programs are effective in ecological protection and reconstruction, we divided the northeastern Qinghai-Tibet Plateau into two parts: the Three-River Headwater conservation area(TRH zone) in the south and the non-conservation area(NTRH zone) in the north. The results indicated an overall(73.32%) increasing trend of vegetation NPP in grasslands throughout the study area. During the period 2000–2015, NDVI in the TRH and NTRH zones increased at the rates of 0.0015/a and 0.0020/a, respectively. Specifically, precipitation accounted for 9.2% of the total variation in NDVI, while temperature accounted for 13.4%. In addition, variation in vegetation NPP of grasslands responded not only to long-and short-term changes in climate, as conceptualized in non-equilibrium theory, but also to the impact of human activities and their associated perturbations. The redundancy analysis successfully separated the relative contributions of climate change and human activities, of which village population and agricultural gross domestic product were the two most important contributors to the NDVI changes, explaining 17.8% and 17.1% of the total variation of NDVI(with the total contribution >30.0%), respectively. The total contribution percentages of climate change and human activities to the NDVI variation were 27.5% and 34.9%, respectively, in the northeastern Qinghai-Tibet Plateau. Finally, our study shows that the grassland restoration in the study area was enhanced by protection measures and programs in the TRH zone, which explained 7.6% of the total variation in NDVI. | XIONG Qinli XIAO Yang Marwa Waseem A HALMY Mohammed A DAKHIL LIANG Pinghan LIU Chenggang ZHANG Lin Bikram PANDEY PAN Kaiwen Sameh B EL KAFRAWAY CHEN Jun | 2019 | Journal of Arid Land2019,11,5: | 10 |
| 2 | Ruthenium(Ⅲ) chloride as an efficient catalyst for the synthesis of perimidine derivatives under mild conditions显示文摘Various biologically important perimidine derivatives have been synthesized efficiently from various ketones and naphthalene- 1,8-diamine by using a catalytic amount of RuCl3(1 mol%).This method is a very simple and high yielding reaction for the synthesis of perimidine derivatives. | Jing Zhang~a Song Lin Zhang~(a,b,*) Jun Min Zhang~a a Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry and Chemical Engineering,Dushu Lake Campus,Suzhou University,Suzhou 215123,China b College of Chemistry and Environmental Science,Henan Normal University,Xinxiang 453007,China | 2007 | Chinese Chemical Letters2007,18,9: | 5 |
| 3 | Comparison of chemiluminescence enzyme immunoassay based on magnetic microparticles with traditional colorimetric ELISA for the detection of serum α-fetoprotein显示文摘A chemiluminescence enzyme immunoassay based on magnetic microparticles (MmPs-CLEIA) was developed to evaluate serum a-fetoprotein (AFP) in parallel with traditional colorimetric enzyme-linked immunosorbent assay (ELISA).A systematic comparison between the MmPs-CLEIA and colorimetric ELISA concluded that the MPs-CLEIA exhibited fewer dosages of immunoreagents,less total assay time,and better linearity,recovery,precision,sensitivity and validity.AFP was detected in forty human serum samples by the proposed MPs-CLEIA and ELISA,and the results were compared with commercial electrochemiluminescence immunoassay (ECLIA) kit.The correlation coefficient between MPs-CLEIA and ELISA was obtained with R 2 0.6703;however,the correlation between MPs-CLEIA and ECLIA (R 2 0.9582) was obviously better than that between colorimetric ELISA and ECLIA (R 2 0.6866). | Qian-Yun Zhang a,b,Hui Chen a,Zhen Lin a,Jin-Ming Lin a a Beijing Key Laboratory of Microanalytical Methods and Instrumentation,Department of Chemistry,Tsinghua University,Beijing 100029,China b Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,China | 2012 | Journal of Pharmaceutical Analysis2012,2,2: | 5 |
| 4 | Population-standardized genetic risk score: the SNP-based method of choice for inherited risk assessment of prostate cancer显示文摘几条不同途径对为决定前列腺癌症(PCa ) 风险的临床医生可得到。利用单个核苷酸多型性(SNP ) 的各种各样的 PCa 风险评价方法的临床的有效性被建立了;然而,这些基于 SNP 的方法没被比较。这研究的目的是为 PCa 风险评价比较三个最通常使用的基于 SNP 的方法。参加者是人(n = 1654 ) 在 PCa 开发的未来的研究注册了。59 PCa 联系风险的 SNP 的遗传型在这个队是可得到的。精明的基于 SNP 的基因风险分数(GRS ) 的三个方法被用于象风险等位基因计数那样的单个疾病风险的评估(GRS 皇家装甲兵) ,加权的风险等位基因计数(GRS-wRAC ) ,和标准化人口的基因风险得分(GRS-PS ) 。吝啬的 GRS 被计算,并且表演在操作典型曲线(AUC ) 和积极预兆的价值(PPV ) 的接收装置下面用区域被比较。所有基于 SNP 的方法被发现独立地与 PCa 被联系(所有 P <0.05;因此他们的临床的有效性) 。分别地,在人与或没有 GRS 皇家装甲兵使用的 PCa 的吝啬的 GRS 用 GRS-wRAC 是 55.15 和 53.46 分别地,是 7.42 和 6.97,使用的 GRS-PS 是 1.12 和 0.84,分别地(所有 P <0.05 为病人与或没有 PCa 之间的差别) 。在基于 AUC 从 non-PCa 区别 PCa 并且在预言 PCa 同样执行的所有三个基于 SNP 的方法基于 PPV 冒险(所有 P >0.05 为在三个方法之间的比较) ,并且所有三个基于 SNP 的方法比家庭历史有显著地更高的 AUC (所有 P <0.05 ) 。从这研究的结果建议当三个大多数通常使用了时, 基于SNP 的方法在在人口水平从 non-PCa 区别 PCa 同样表现了,因为, GRS-PS 是为在单个水平的风险评价的选择的方法它的价值(在 1.0 代表平均人口风险的地方)能容易不管在计算使用的联系风险的 SNP 的数字被解释。 | Carly A Conran Rong Na Haitao Chen Deke Jiang Xiaoling Lin S Lilly Zheng Charles B Brendler Jianfeng Xu | 2016 | Asian Journal of Andrology2016,18,4: | 4 |
| 5 | 全颗粒饲料对奶牛生产性能的影响显示文摘饲料中的中性洗涤纤维(NDF)含量和饲料颗粒直径是影响瘤胃功能的重要因素。试验评估了以颗粒饲料为主的奶牛瘤胃健康情况、NDF消化率和生产性能。选取8头荷斯坦母牛(336±30 d,体重346±35 kg),随机分配到交叉重复试验组中,奶牛安置于牛栏,自由采食。试验期为3周,前两周是适应期,最后一周为数据收集期。各组饲粮原料相同,但物理形式不同,分为全混合日粮(TMR)和颗粒料(直径=8 mm)。两组间物理有效NDF(pe NDF)不同,TMR组为39.8%,颗粒料组为11.8%。在试验过程中,干物质采食量(DMI)、饮水量、瘤胃反刍时间、瘤胃温度和pH情况均记录。3周后收集粪样,确定潜在的可消化NDF总消化率(pdNDF)。每阶段结束后计算平均日增重和饲料转化率。颗粒料组的DMI、DMI/体重和饮水量更高。而两组间平均日增重和饲料转化率无显著差异。颗粒料组的瘤胃反刍时间为241 min·d-1低于TMR组的507 min·d-1。饲料的不同物理外形对瘤胃温度、瘤胃pH无显著影响。TMR组的pdNDF总消化率为90.25%高于颗粒料组的86.82%。试验结果表明,动物易接受完整的颗粒饲料,DMI较高,且反刍时间减少,但瘤胃pH无显著变化。TMR组的pdNDF消化率显著增加。尽管两组奶牛在DMI和纤维消化方面表现不同,但总体表现相似,两组饲料的保存时间与其物理形式有关。在短期内,提供能满足NDF需求的完全颗粒饲料可改善瘤胃健康状况和动物生产性能,而较长时间的数据则需要进一步试验。 | Wang J Yang M Cao M Lin Y Che L Q Duraipandiyan V Al-Dhabi N A Fang Z F Xu S Y Feng B Liu G Wu D Bonfante E Palmonari A Mammi L Canestrari G Fustini M Formigoni A | 2016 | 饲料博览2016,0,12: | 2 |
| 6 | 遗传性肥胖与心房颤动的关系显示文摘观察性研究已经确定了体质量指数(body mass index,BMI)与心房颤动之间的关联。然而,从观察性研究中推断因果关系会受到混杂因素、逆因果关系和偏倚的影响。该研究的主要目的是应用BMI的遗传学预测因子评估BMI与心房颤动之间的因果关系。方法:纳入1987-2002年期间在美国、冰岛和荷兰实施的7个前瞻性人群队列研究中基线无心房颤动的欧洲血统个体51 646人, | 刘莉 叶鹏 Chatterjee NA Giulianini F Geelhoed B Lunetta KL Misialek JR Niemeijer MN Rienstra M Rose LM Smith AV Arking DE Ellinor PT Heeringa J Lin H Lubitz SA Soliman EZ Verweij N Alonso A Benjamin EJ Gudnason V Stricker BH van der Harst P Chasman DI Albert CM | 2017 | 中华高血压杂志2017,25,2: | 2 |
| 7 | Development of an integrated model for assessing the impact of diffuse and point source pollution on coastal waters显示文摘 | YUAN D LIN B FALCONER R A | 2007 | Environmental Modelling & Software2007,22,: | 1 |
| 8 | Characterization of sol-gel derived cobalt oxide xerogels as electrochemical capacitor显示文摘 | LIN C RITTER A J POPOV B N | 1998 | Journal of Electrochemical Society1998,145,12: | 1 |
| 9 | Analysis of DNA methylation related to rice adult plant resistance to bacterial blight based on methylation sensitive AFLP(MSAP) analysis显示文摘 | Sha A H Lin X H Huang J B | 2005 | Mol Genel Genomics2005,273,: | 1 |
| 10 | Properties of polyether-polyurethane block copolymers : Effect of hard segment lengthdistribution 显示文摘 | Miller J A Lin S B Hwang K K S | 1985 | Macromolecules1985,18,1: | 1 |
| 11 | A conformation-specific monoclonal antibody reacting with fusion-active gp41 from the human immunodeficiency virus type 1 envelope glycoprotein显示文摘 | Jiang S B Lin K Lu M A | 1998 | Viral1998,72,10: | 1 |
| 12 | Buckytubes and derivatives:their growth and implications for buckyball formation显示文摘 | DRAVID V P LIN X WANG X K YEE A KETTERSON J B CHANG R P H | 1993 | Science1993,259,: | 1 |
| 13 | Finite element modeling of fatigue crack growth of surface cracked plates Part Ⅱ:Crack shape change显示文摘 | Lin X B Smith R A | 1999 | Engng Fract Mech1999,63,: | 1 |
| 14 | Transient homodynamic effect of recruitment maneuvers in three experimental models of acute lung injury显示文摘 | Lin S C Adams A B Sinonson D A | 2004 | Crit Care Med2004,32,12: | 1 |
| 15 | The role of the surgeon in the evolution of flexible endoscopy显示文摘 | Morgenthal C B Richards W O Dunkin B J Forde K A Vitale G Lin E | 2007 | Surg Endosc2007,21,6: | 1 |
| 16 | Mortality risk after preoperative versus postoperative chemotherapy and radiotherapy in lymph node-positive rectal cancer显示文摘 | Seery T E Ziogas A Lin B S | 2013 | Journal of Gastrointestinal Surgery2013,17,2: | 1 |
| 17 | Myostatin knockout in mice increases myogenesis and decreases adipogenesis 显示文摘 | Lin J Arnold H B Della- fera M A | 2002 | Biochem Biophys Res Commun2002,291,3: | 1 |
| 18 | Stress and fold localization in thin e lastic membranes 显示文摘 | Pocivavsek L Dellsy R Kern A Johnson S Lin B Lee KY C Cerda E | 2008 | Science2008,320,: | 1 |
| 19 | Polymeric carbon nanocomposites from carbon nanotubes functionalized with matrix polymer显示文摘 | Lin Y Zhou B Fernando K A S | 2003 | Macromolecules2003,36,: | 1 |
| 20 | Finite element modeling of fatigue crack growth of surface cracked plates Part Ⅲ:Stress intensity factor and fatigue crack growth life显示文摘 | Lin X B Smith R A | 1999 | Engng Fract Mech1999,63,: | 1 |