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Patterns of.grassland invasions by trees: insights f.om demographic and genetic spatial analyses

Journal of.Plant Ecology 2015年第5期8卷 468-479页

作者： martin dovčiak Richard Hrivnák Karol Ujházy Dušan Gömöry State University of.New York College of Environmental Science and Forestry(SUNY ESF)1 Forestry DriveSyracuseNY 13210USA Institute of.Botany Slovak Academy of SciencesDúbravskácesta 9Bratislava 84523Slovakia Technical University in Zvolen Faculty of ForestryT.G.Masaryka 24Zvolen 96053Slovakia

Aims Woody invasions into grasslands have increased globally due to changing land use,climate and introduced woody species,but spatial processes generating and sustaining these invasions are not well *** gain insight into the patterns of.spread of.tree populations within grasslands,and to propose a f.ll spatial analytical toolbox f.r studying native and non-native woody spe-cies spread when long-term data are not available,we tested if.50 years of.grassland invasion in Western Carpathians by Norway spruce(Picea abies Karst.)proceeded by one of.the two tradi-tionally competing hypotheses of.species spread:(i)by f.ontier expansion,or(ii)by advanced groups established ahead of.the population *** also tested whether the pattern of.invasion changed over *** We analyzed the spatial demographic and genetic patterns of.a Norway spruce population invading a Western Carpathian grass-land using ripley’s L(t)and genetic kinship coef.icients(f.j).We mapped and genotyped spruce trees across the invasion f.ont(f.om the invasion leading edge to f.lly colonized grassland near the source population)using three demographic classes(adults,juve-niles and seedlings)to approximate the temporal aspects of.the *** studied how the spatial patterns of.invasion by indi-vidual demographic classes and their genetic kinship varied among adjacent plots established at dif.erent distances f.om the source population(ranging f.om 0 to 160 m,in 40-m distance increments).Important f.ndings Juveniles were positively genetically related to adults on f.ne scales(m),suggesting that adults within the grassland acted as a seed source and accelerated early ***,adults did not act as nucleation centers f.r the f.rmation of.advanced juvenile ***,geneti-cally unrelated juveniles f.rmed groups independently of.*** groups were small and separate at the leading edge but they increased in size and graded into a continuous zone near the source popul

关键词： genetic spatial structure mountain meadows point pattern analysis population structure secondary succession

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马铃薯的耐盐性及干旱沙地盐水滴灌试验

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土壤学报 1996年第4期33卷 405-413页

作者：龚家栋 dov Pasternak Yoel Demalach 中国科学院兰州沙漠研究所以色列本固里安大学应用研究所以色列内格夫盐水灌溉试验站

马铃薯的耐盐性和盐水滴灌试验于１９９３年２月至７月在以色列内格夫盐水灌溉试验站进行。该试验灌溉水源为国家输水系统（１．２ｄＳ／ｍ）和当地深层地厂水（６．２ｄＳ／ｍ），灌溉频率为每天１次、３次和６次，在试验中进行了有关... 详细信息

马铃薯的耐盐性和盐水滴灌试验于１９９３年２月至７月在以色列内格夫盐水灌溉试验站进行。该试验灌溉水源为国家输水系统（１．２ｄＳ／ｍ）和当地深层地厂水（６．２ｄＳ／ｍ），灌溉频率为每天１次、３次和６次，在试验中进行了有关生理、生长、产量以及土壤积盐的测试。根据试验结果，每天灌水１次，盐水灌溉与淡水灌溉相比产量降低１２％，而每天灌水３次和６次，盐水对产量没有明显影响。然而，盐水灌溉使块茎单重和干重率有不同程度增加。另外，盐水灌溉降低了植株高度、植物生长和干物质积累。只要实施合理的灌溉，在沙地上种植马铃薯可以获得较高的产量和品质。由于沙地的高渗透性，可以利用滴灌进行盐水灌溉，这样也易于随时补充植物生长所需的水分和营养。

关键词：沙地马铃薯耐盐性盐水灌溉滴灌

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为你实现ISO9000选一位顾问

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轴承工业 2000年第12期 22-24页

作者： dov,m 苗立军洛阳特全轴承有限公司

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血压变异性比与肾小球滤过率的关系独立于血压和脉搏波传导速度

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中华高血压杂志 2018年第9期26卷 898-898页

作者： Woodiwiss AJ Norton GR Ben-dov IZ Gavish B Bursztyn m 陈云叶鹏

24h动态收缩压变异性与舒张压变异性的比值（blood pressure variability ratio，BPVR）独立于血压预测全因死亡率，且与动态动脉僵硬度（ambulatory arterial stif.ness，AASI）有相似的预测能力。BPVR和AASI在既定血压状态下能否提供... 详细信息

24h动态收缩压变异性与舒张压变异性的比值（blood pressure variability ratio，BPVR）独立于血压预测全因死亡率，且与动态动脉僵硬度（ambulatory arterial stif.ness，AASI）有相似的预测能力。BPVR和AASI在既定血压状态下能否提供除了预测动脉僵硬度以外的其他预测价值尚不得而知。

关键词：血压变异性脉搏波传导速度肾小球滤过率 arterial 动脉僵硬度收缩压变异性预测能力全因死亡率

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如何随访接受α受体阻断剂治疗的患者?来自动态血压监测数据库的观点

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世界核心医学期刊文摘（心脏病学分册） 2006年第7期2卷 59-60页

作者： Ben-dov I.Z. Ben-Arie L. mekler J. Bursztyn m. 张步升 Nephrology and Hypertension Services Hadassah-Hebrew University Medical Center Ein-Kerem Campus PO Box 12000 Jerusalem 91120 Israel

Objective: Adrenergic alpha-antagonists have been suggested to conf.r lesser protection, compared to diuretics, when used as f.rst agents f.r hypertension. While dif.erences in clinic blood pressure may be partly responsible, this inf.riority is unexpected in light of.the metabolic advantages of.α-blockade. The aim of.this study was to evaluate the relationship between use of.α-blockers and blood pressure dipping. methods: A database of.a 24-h ambulatory monitoring service was cross-sectionally evaluated f.r associations between antihypertensives and dipping. There were 681 treated subjects during a 3-year period(age 63±14, 57%f.male). Results: Overall, 78 of.681 treated hypertensive subjects used α-blockers(11%). Nine per cent of.dippers and 16%of.nondippers were treated with α-blockade, odds ratio 2.0. Whereas clinic, 24-h, and awake blood pressures were similar in α-blocker users and nonusers, sleep blood pressure was signif.cantly higher in the f.rmer group. f.rthermore, signif.cantly f.wer subjects given α-blockers had a controlled sleep blood pressure. Among α-blocker nonusers sleep blood pressure was the best controlled category, whereas in α-blocker users manual blood pressure had the highest rate of.control. Generally, accounting f.r covariates of.α-blockade(age, gender, diabetes, total number of.medications) did not inf.uence the above-mentioned trends. f.nally, a limited negative dose-response relationship between α-blockade and dipping magnitude was also noticed. Conclusions: We f.und a signif.cant negative association between adrenergic α-blockade and the magnitude of.sleep-related blood pressure decline. Awaiting results f.om interventional studies, this may suggest a need to perf.rm ambulatory monitoring in patients given alpha-blocking agents(or at least supine and standing measurements), and may partially clarif. the inf.riority of.doxazosin in the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial(ALLHAT).

关键词：动态血压监测 α受体阻断剂控制率多沙唑嗪干预试验心脏病发作部分解释受试对象协变量代谢

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心脏mRI评估右室功能预测植入心脏复律除颤器病人的心血管事件

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国际医学放射学杂志 2022年第1期 105-105页

作者： L.Jimenez-Juan N.Ben-dov C.V.Goncalves f.azao N.S.Tan S.m.Singh P.Dorian 白雪

摘要右心室射血分数（RVEf.是各种心脏疾病病人死亡和心血管不良结局的独立预测因子。目的探讨心脏mRI测量的RVEf.否预测植入型心律转复除颤器（ICD）病人在

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Role of.PCA3 test in clinical decision making f.r prostate cancer diagnosis

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World Journal of.Clinical Urology 2015年第1期4卷 68-74页

作者： Vladimir Yutkin Ali Al-Zahrani Andrew Williams Guy Hidas Carlos martinez Jonathan Izawa dov Pode Joseph Chin Uro-Oncology f.llowship Program Schulich School of Medicine University of Western Ontario LondonOntario N6A 3K7 Canada Urology Department Hadassah and Hebrew University Medical Center

AIm: To assess the role of.PCA3 urine test in the management of.patients with suspected prostate cancer af.er repeat negative prostate ***: Patients with suspected prostate cancer eitherdue to high or rising prostate specif.c antigen(PSA) levels and with a history of.prostate biopsy who were candidates f.r repeat procedure were prospectively recruited to undergo PCA3 urine test. The recommendations on f.rther management including the decision whether to proceed or not to the biopsy were made based on the PCA3 score. Patients' adherence with the recommendations and inf.uence of.the PCA3 test on clinical decision making were assessed. The contribution of.the multivariate model was measured with a decision curve analysis. RESULTS: Three hundred and f.f.y-six patients were recruited to the study and underwent the PCA3 test. Twenty-six percent of.263 patients underwent prostate biopsy despite the low risk designation by PCA3 and 30% of.93 men did not proceed to biopsy despite a high risk result, rendering overall adherence of.73%. The variables that signif.cantly correlated with adherence were positive f.mily history of.prostate cancer and PSA more than 10 ng/m L. Pre-test clinical stage, the number and the results of.previous biopsies were not associated with the adherence. The decision curve analysis gave identical results f.r cut-of. points of.25 and 35. On multivariate analysis the model that included PCA3 score, serum PSA, f.mily history and result of.the previous biopsy best perf.rmed with Area Under the Curve of.0.77. CONCLUSION: PCA3 urine test markedly outperf.rms PSA in a repeat biopsy setting. Urologists and patients demonstrate substantial conf.dence in this analysis and tend to f.llow its recommendations.

关键词： Prostate cancer Prostate biopsy Prostate specif.c antigen PCA3 Decision making

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The Leaf.Reticulate mutant dovl Is Impaired in the f.rst Step of.Purine metabolism

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molecular Plant 2012年第6期5卷 1227-1241页

作者： Christian Rosar Kerstin Kanonenberg Arun m. Nanda michael mielewczik Andrea Brautigam Ondrej Novake miroslav Strnad Achim Walter Andreas Rm. Weber Institute f.r Plant Biochemistry Heinrich-Heine-Universitat Universitatsstrasse 1 D-40225 Dusseldorf Germany Present address: Institute of.Bio- and Geosciences IBG-1: Biotechnology Forschungszentrum Julich D-52425 Julich Germany Institute of.Bio- and Geosciences IBG-2: Plant Sciences Forschungszentrum Julich D-52425 Julich Germany Present address: Institute of.Agricultural Sciences Universitatstrasse 2 ETH Zurich CH-8092 Zurich Switzerland Laboratory of.Growth Regulators Palacky University & Institute of Experimental Botany AS CR Slechtitelu 11 CZ-78371 Olomouc Czech Republic

A series of.reticulated Arabidopsis thaliana mutants were previously described. All mutants show a reticulate leaf.pattern, namely green veins on a pale leaf.lamina. They have an aberrant mesophyll structure but an intact layer of.bundle sheath cells around the veins. Here, we unravel the f.nction of.the previously described reticulated EmS-mutant dovl （dif.erential development of.vascular associated cells 1）. By positional cloning, we identif.ed the mutated gene, which encodes glutamine phosphoribosyl pyrophosphate aminotransf.rase 2 （ATase2）, an enzyme catalyzing the f.rst step of.purine nucleotide biosynthesis, dovl is allelic to the previously characterized cial-2 mutant that was isolated in a screen f.r mutants with impaired chloroplast protein import. We show that purine-derived total cytokinins are lowered in clovl and crosses with phytohormone reporter lines revealed dif.erential reporter activity patterns in dovl. metabolite prof.ling unraveled that amino acids that are involved in purine biosynthesis are increased in dovl. This study identif.ed the mo- lecular basis of.an established mutant line, which has the potential f.r f.rther investigation of.the interaction between metabolism and leaf.development.

关键词： leaf.development reticulated mutants cytokinin growth kinetics purine metabolism.

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