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197篇 您的检索式:作者名="SABINE H"
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1Impact of tree diversity and environmental conditions on the survival of shrub species in a forest biodiversity experiment in subtropical China显示文摘Aims Although shrubs are an important component of forests,their role has not yet been considered in forest biodiversity experiments.In the biodiversity-ecosystem functioning(BEF)experiment with subtropical tree species in south-east China(BEF-China),we factorially combined tree with shrub species-diversity treatments.Here,we tested the hypotheses that shrub survival differs between the 10 planted shrub species,with lower survival rates of late-than early-successional species and is affected by environmental conditions,such as topography and top soil characteristics,as well as by biotic factors,represented by tree,shrub and herb layer characteristics.Methods We analyzed the survival of 42000 shrub individuals in 105 plots varying in tree and shrub species richness of the BEF-China project four years after planting.Shrub survival was analyzed with generalized linear mixed effects models at the level of individuals and with variance partitioning at the plot level.Random intercept and random slope models of different explanatory variables were compared with respect to the Bayesian Information Criterion(BIC).Important Findings Survival rates differed largely between the 10 shrub species,ranging from 26%to 91%for Ardisia crenata and Distylium buxifolium,respectively.Irrespective of species identity,single abiotic factors explained up to 5%of species survival,with a negative effect of altitude and slope inclination and a positive effect of the topsoil carbon to nitrogen ratio,which pointed to drought as the major cause of shrub mortality.In contrast,neither tree nor shrub richness affected shrub survival at this early stage of the experiment.Among the biotic predictors,only herb layer species richness and cover of the dominant fern species(Dicranopteris pedata)affected shrub survival.Overall,our models that included all variables could explain about 65%in shrub survival,with environmental variables being most influential,followed by shrub species identity,while tree species diversity(species richness and identity)and herb layer characteristics contributed much less.Thus,in this early stage of the experiment the biotic interactions among shrubs and between shrubs and trees have not yet overruled the impact of abiotic environmental factors.Bo Yang Ying Li Bingyang Ding Sabine Both Alexandra Erfmeier Werner Härdtle Keping Ma Bernhard Schmid Thomas Scholten Gunnar Seidler Goddert von Oheimb Xuefei Yang Helge Bruelheide 2017Journal of Plant Ecology2017,10,1:7
2Beta-7 integrin controls enterocyte migration in the small intestine显示文摘AIM:To hypothesize that beta-7 integrin affects cellularmigration of both,lymphocytes and enterocytes.METHODS:The nucleoside analog Brd U was ip injected in beta-7-deficient mice(C57BL/6-Itgbtmlcgn/J)of male gender and age-matched male C57BL/J J mice(wild type)4,20,or 40 h before analysis.The total small intestine was isolated,dissected,and used for morphometrical studies.Brd U-positive epithelial cells were numbered in at least 15 hemi-crypts per duodenum,jejunum,and ileum of each animal.The outer most Brd U-positive cell(cellmax)was determined per hemi-crypt,numerically documented,and statistically analysed.RESULTS:Integrins containing the beta-7-chain were exclusively expressed on leukocytes.In the small intestinal mucosa of beta-7 integrin-deficient mice the number of intraepithelial lymphocytes was drastically decreased.Moreover,the Peyer’s patches of beta-7integrin-deficient mice appeared hypoplastic.In beta-7integrin-deficient mice the location of cellmax was found in a higher position than it was the case for the controls.The difference was already detected at 4 h after Brd U application,but significantly increased with time(40 h after Brd U injection)in all small intestinal segments investigated,i.e.,duodenum,jejunum,and ileum.Migration of small intestinal enterocytes was different between the experimental groups measured by cellmax locations.CONCLUSION:The E-cadherin beta-7 integrin pathway probably controls migration of enterocytes within the small intestinal surface lining epithelial layer.Elke Kaemmerer Paula Kuhn Ursula Schneider Thomas Clahsen Min Kyung Jeon Christina Klaus Julia Andruszkow Michael Hrer Sabine Ernst Angela Schippers Norbert Wagner Nikolaus Gassler 2015World Journal of Gastroenterology2015,21,6:3
3Simultaneous occurrence of a hepatocellular carcinoma and a hepatic non-Hodgkin's lymphoma infi ltration显示文摘To investigate the simultaneous occurrence of hepatocellular carcinoma and non-Hodgkin's lymphoma, we report the case of a 70 year old patient with a primary diagnosis of non-Hodgkin's lymphoma in 2002. In a routine follow up investigation of his chronic lymphocytic leukemia a newly detected mass in the Couinaud's segments 2 and 3 was found. No hepatitis C virus or hepatitis B virus infection or cirrhosis was evident. After laparoscopic segmentectomy the histological examination revealed a hepatocellular carcinoma. While the relation between liver parenchyma damages and hepatocellular carcinoma or non-Hodgkin's lymphoma is well known, only a few publications have focused on the coexistence of hepatocellular carcinoma and non-Hodgkin's lymphoma. With this case we demonstrate the coexistence of these diseases without having a pre- damaged liver parenchyma.Sabine Heidecke Dirk L Stippel Arnulf H Hoelscher Inga Wedemeyer Hans-Peter Dienes Uta Drebber 2010World Journal of Hepatology2010,2,6:2
4The human type Ⅰ interferonreceptor: NMR structure reveals the molecular basis of ligand binding显示文摘Jordan H C Sabine R Q Rina L 2003Structure2003,1,:1
5Long-term urban particulate air pollution,traffic noise,and arterial blood pressure 显示文摘Kateryna F Susanne M Sabine H 2011Environ Health Perspect2011,119,:1
6Changes in respiration of fresh-cut butlerhead lettuce under controlled atmospheres using low and superatmospheric oxygen conditions with different carbon dioxide levels显示文摘ESCALONA V H BERT E V SABINE G 2006Postharvest Biology and Technology2006,39,1:1
7Use of hyperspectral images in the identification and mapping of expansive clay soils and the role of spatial resolution显示文摘SABINE CHABRILLAT ALEXANDER F H GOETZ LISA KROSLEY 2002Remote Sensing of Environment2002,82,:1
8Exposure to radio-frequency electromagnetic field and behavioural problems in Bavarian children and adolescents 显示文摘Silke T Sabine H 2010EurJ Epidemiol2010,25,:1
9Antiretroviral drugre- lated liver mortality among HIV-positive persons in the absence of hepatitis B or C virus coinfection: the data collection on ad- verse events of anti-HIV drugs study显示文摘Kovari H Sabin C A Ledergerber B 2013Chn Infect Dis2013,56,6:1
10Effects of enhanced solar irradiation on chlorophyll fleorescence and photosynthetic oxygen production of five species of phytoplankton显示文摘 DONAT-P H 1995FEMS Microbiology Ecology1995,16,1995:1
11The splicing of yeast mitochondrial group I and group II introns requires a DEAD-box protein with RNA chaperone function显示文摘HON REN H CLAIRE E R SABINE M 2005PNAS2005,102,1:1
12Three viruses of the bovine respiratory disease complex apply different strategies to initiate infection 显示文摘Jana K H Sabine U B Katherina G 2014Vet Res2014,45,:1
13Increased cause-specific mortality associated with 2003 heat wave in Essen,Germany 显示文摘Barbara H Sabine H Tanja B 2008J Toxicol Environ Health2008,71,:1
14Duplicated fie genes in maize expression pattern and imprinting suggest distinct functions显示文摘DANILEVSKAYA O N PEDRO H SABINE H 2003Plant Cell2003,15,:1
15Level choice in truncated total least squares显示文摘Diana M S Sabine V H 2007Computational Statistics and Data Analysis2007,52,:1
16Changes in respiration of fresh-cut butter-head lettuce under controlled atmospheres using low and super-atmospheric oxygen conditions with different carbon dioxide levels 显示文摘Vctor H E Bert E V Sabine G 2006Postharvest Biology and Technology2006,,1:1
17Level choice in truncated to- tal least squares显示文摘Diana M S Sabine V H 2007Computational Statistics and Da- ta Analysis2007,,52:1
18Genetic organization,nucleotide sequence and regulation of expression of genes encoding phenol hydroxylase and catechol 1,2-dioxygenase in Acinetobacter calcoaceticus NCIB8250 显示文摘Sabine E Falck S Wolfgang H 1995Molecular Microbiology1995,18,1:1
19Voltage-sag indices-recent developments in IEEE P1564 task force显示文摘MATH H J BOLLEN D SABIN D 2003CIGRE/IEEE-PES on Quality and Security of Electric Power Delivery Systems2003,,2:1
20Identification of Different states of hepatitis B virus infection with a quantitative PCR assay 显示文摘Harald H Kessler Sabine Preininger Evelyn Steizi 2000Clin Diagn Lab Immun2000,7,2:1
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