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366篇 您的检索式:作者名="Putz"
    题名 作者 年代 出处 被引量
1老年人不同年龄段脊柱椎体外周骨定量CT测定研究显示文摘目的 研究老年人各年龄段 T3~ L5椎体骨密度及椎体横断面面积。方法 用外周骨定量 CT(p QCT)仪测量 40具老年尸体中 60 0个椎体的总骨密度、松质骨密度、皮质下骨密度、皮质骨密度、椎体横断面总面积、松质骨面积、皮质下骨面积及皮质骨面积 ,分别统计 60~ 69岁 (A组 )、70~ 79岁 (B组 )、80~ 89岁 (C组 )、90~ 98岁 (D组 )椎体骨密度值。结果 T3~ L5椎体总骨密度 (mg/ cm3)为 1 88.2 5~ 1 91 .60 ,松质骨密度为1 2 8.0 1~ 1 30 .66,皮质下骨密度为 454.90~ 461 .87,皮质骨密度为 764.1 3~ 769.55。结论 60~ 79岁椎体总骨密度值保持在相对稳定水平 ,80岁以后该值下降较明显。沈宁江 Kuhn V Eckstein F Putz R 2003中国老年学杂志2003,23,1:10
2A terrestrial observatory approach to the integrated investigation of the effects of deforestation on water,energy,and matter fluxes显示文摘Integrated observation platforms have been set up to investigate consequences of global change within a terrestrial network of observatories(TERENO)in Germany.The aim of TERENO is to foster the understanding of water,energy,and matter fluxes in terrestrial systems,as well as their biological and physical drivers.Part of the Lower Rhine Valley-Eifel observatory of TERENO is located within the Eifel National Park.Recently,the National Park forest management started to promote the natural regeneration of near-natural beech forest by removing a significant proportion of the spruce forest that was established for timber production after World War II.Within this context,the effects of such a disturbance on forest ecosystem functioning are currently investigated in a deforestation experiment in the Wüstebach catchment,which is one of the key experimental research sites within the Lower Rhine Valley-Eifel observatory.Here,we present the integrated observation system of the Wüstebach test site to exemplarily demonstrate the terrestrial observatory concept of TERENO that allows for a detailed monitoring of changes in hydrological and biogeochemical states and fluxes triggered by environmental disturbances.We present the observation platforms and the soil sampling campaign,as well as preliminary results including an analysis of data consistency.We specifically highlight the capability of integrated datasets to enable improved process understanding of the post-deforestation changes in ecosystem functioning.H. R. BOGENA R BOL N. BORCHARD N. BRuGGEMANN B. DIEKKRtiGER C. DRuE J. GROH N. GOTTSELIG J. A. HUISMAN A. LuCKE A. MISSONG B. NEUWIRTH T. PuTZ M. SCHMIDT M. STOCKINGER W. TAPPE L. WEIHERMuLLER I. WIEKENKAMP H. VEREECKEN 2015Science China Earth Sciences2015,58,1:6
3Silvicultural alternatives to conventional even-aged forest man-agement-what limits global adoption?显示文摘Background: The development of forestry as a scientific and management discipline over the last two centuries has mainly emphasized intensive management operations focused on increased commodity production, mostly wood. This 'conventional' forest management approach has typically favored production of even-aged, single-species stands. While alternative management regimes have generally received less attention, this has been changing over the last three decades, especially in countries with developed economies. Reasons for this change include a combination of new information and concerns about the ecological consequences of intensive forestry practices and a willingness on the part of many forest owners and society to embrace a wider set of management objectives. Alternative silvicultural approaches are characterized by a set of fundamental principles, including avoidance of clearcutting, an emphasis on structural diversity and small-scale variability, deployment of mixed species with natural regeneration,and avoidance of intensive site-preparation methods.Methods: Our compilation of the authors' experiences and perspectives from various parts of the world aims to initiate a larger discussion concerning the constraints to and the potential of adopting alternative silvicultural practices.Results: The results suggest that a wider adoption of alternative silvicultural practices is currently hindered by a suite of ecological, economic, logistical, informational, cultural, and historical constraints. Individual contexts display their own unique combinations and relative significance of these constraints, and accordingly, targeted efforts, such as regulations and incentives, may help to overcome specific challenges.Conclusions: In a broader context, we propose that less emphases on strict applications of principles and on stand structures might provide additional flexibility and facilitate the adoption of alternative silvicultural regimes in a broader set of circumstances. At the same time, the acceptance of alternative silvicultural systems as the 'preferred or default mode of management' wil necessitate and benefit from the continued development of the scientific basis and valuation of a variety of ecosystem goods and services. This publication is aimed to further the discussion in this context.Klaus J Puettmann Scott McG Wilson Susan C Baker Pablo J Donoso Lars Dr?ssler Girma Amente Brian D Harvey Thomas Knoke Yuanchang Lu Susanna Nocentini Francis E Putz Toshiya Yoshida Jürgen Bauhus 2015Forest Ecosystems2015,2,2:4
4Origin of dynamical properties in PMMA - C60 nano - composites 显示文摘Jamie M Kropka Karl W Putz Victor Pryamitsyn 2007Macromolecules2007,40,:1
5Infection by Borrelia burgdorferi and cutaneous B-cell lymphoma显示文摘CERRONI L ZOCHING N PUTZ B 1997J Cutan Pathol1997,24,:1
6Removal of nonbiodegradable chemicals fi'om mixtures during granular activated carbon bioregeneration 显示文摘Putz A R H Losh D E Speitel G E 2005Journal of Environmental Engineering2005,131,:1
7TP53 mutation pattern of esophageal squamous cell carcinomas in a high risk area(Southern Brazil):role of life style factors显示文摘Putz A Hartmann AA Fontes PR 2002Int J Cancer2002,98,1:1
8Reliability of pemneal reaction time measurements 显示文摘Benesch S Putz W Rosenbaum D 2000Clin Biomech ( Bristol Avon)2000,15,1:1
9Orirntation of MOMS-O2/D2 and MOMS-2P/PRIRODA 显示文摘 Koryus W Ohlhof T Putz E 1999ISPRS Journal of Photogramnetry and Remote Sensing1999,54,:1
10Buried seeds,newly dispersed seeds,and the dynamics of a lowland forest in Malaysia显示文摘PUTZ F E APPANAH B 1987Biotropica1987,19,:1
11Adiponeetin and C-reactive protein in obesity, type 2 diabetes, and monodrug therapy 显示文摘Putz DM Goldner WS Bar RS 2004Metabolism2004,53,11:1
12Orientation of MOMS-O2/D2 and MOMS-2P/PRIRODA显示文摘Ebner H Koryus W Ohlhof T Putz E 1999ISPRS Journal of Photogrammetry and Remote Sensing1999,54,:1
13Adiponectin atten- uates osteolysis in aseptic loosening of total hip replacements 显示文摘Landgraeber S Putz S Schlattjan M 2014Acta Biomater2014,10,1:1
14Identification of toxic oligopeptides in Amanita fungi employing capillary electrophoresis-electrospray ionization-mass spectrometry with positive and negative ion detection显示文摘RITTGEN J PUTZ M PYELL U 2008Electrophoresis2008,29,10:1
15Natural disturbance and gap-phase regeneration in a wind-exposed tropical cloud forest 显示文摘LAWTON R O PUTZ R B 1988Ecology1988,69,:1
16Dehydroepiandrosterone administration modulates endothelial and neutrophil adhesion molecule expression in vitro显示文摘Barkhausen T Westphal BM Putz C 2006Crit Care2006,10,4:1
17Nephrocystin-d is required for pronephric duct- dependent cloaca formation in zebrafish 显示文摘SLANCHEV K PUTZ M SCHMITF A 2011Human Molecular Genetics2011,20,16:1
18Orientation of MOMS-02/D2 and MOMS-2P/PRIRODA imagery 1 Updated version of a paper presented at the ISPRS Congress in Vienna, 1996. 1显示文摘H. Ebner W. Kornus T. Ohlhof E. Putz 1999ISPRS Journal of Photogrammetry and Remote Sensing1999,,5:1
19The natural history of lianas on Barro Colorado Island Panama显示文摘Putz F E 1984Ecology1984,65,:1
20显示文摘Putz M V Russo N Siclia E 2004J Comput Chem2004,25,:1
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