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497篇 您的检索式:作者名="Pietsch"
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1The effect of microclimate on wood decay is indirectly altered by tree species diversity in a litterbag study显示文摘Aims We studied the influence of tree species diversity on the dynamics of coarse wood decomposition in developing forest communities in a natural,topographically heterogeneous landscape.Using the litter bag technique,we investigated how and to which extent canopy tree species richness or the exclusion of mesoinvertebrates and macroinvertebrates affected wood decomposition in the light of natural variations in the microclimate.We compared the relative importance of the two aspects(experimental treatment versus microclimate)on wood decay rates using Schima superba as a standard litter.Methods Coarse woody debris(CWD)was deposited in litter bags with two different mesh sizes in a total of 134 plots along a gradient of canopy tree species richness(0-24 species).Wood decomposition was assessed at two consecutive time points,one and three years after deposition in the field.Local climatic conditions were assessed throughout the duration of the experiment.Microclimatic conditions were assessed both,directly in the field as well as indirectly via correlations with local topography.We used analysis of variance based approaches to assess the relative importance of the treatments(community tree species richness and macro invertebrate exclusion)and microclimatic conditions on wood decay.Important Findings No direct influence of tree species richness on wood decay could be detected.However,the exclusion of macroinvertebrates significantly decreased wood decomposition rates.In addition,microclimatic conditions accounted for a substantial proportion of explained variance in the observed data.Here,wood decomposition was negatively affected by low mean temperatures and high variations in local humidity and temperature.However,tree species richness as well as the respective species composition affected the presence of termites within forest communities.These,in turn,significantly increased the decay of CWD.The strength of both,experimental treatment and microclimate increased with ongoing decomposition.We conclude that,while tree species richness per se has no direct influence on wood decomposition,its influence on the local arthropod decomposer community(especially the presence of termites)does have an effect.David Eichenberg Katherina Pietsch Christian Meister Wenyong Ding Mingjian Yu Christian Wirth 2017Journal of Plant Ecology2017,10,1:5
2粗纤维浓缩物对肉鸡生产性能和水便控制的应用探讨显示文摘水便综合征对家禽生产造成的的影响是巨大的。除了疾病,饲料质量、垫料和环境温度,包括通风都对粪便质量产生影响。其中,饲料的影响是主要因素之一。非淀粉多糖酶早就作为饲料添加剂应用于改善水便综合征,另外一个可能的途径是使用粗纤维浓缩物作为饲料添加剂,这在改善动物的粪便质量和生产性能方面已有先例。本文主要探讨粗纤维浓缩物对肉鸡生产性能和水便控制的效果。Liu Jin Manfred Pietsch Georg Dusel 刘一鸣(译) 高业雷(译) 2010中国家禽2010,32,17:3
3Simulation of spray coating in a spouted bed using recurrence CFD显示文摘Although numerical models such as the computational fluid dynamics–discrete element method (CFD–DEM) have enabled the accurate simulation of laboratory-scale apparatuses, the application of these methods to large-scale apparatuses with many particles and time scales ranging from minutes to hours remains a challenge. The recently developed recurrence CFD (rCFD) method seeks to overcome these issues in pseudo-periodic processes by extrapolating globally recurring patterns in a physically meaningful way and describing the transport and interaction of passive scalars using Lagrangian tracers. Spouted beds represent an interesting target because of the associated variety of flow regimes. They can be effectively described by CFD–DEM on the time scale of tens of seconds, whereas industrially relevant processes typically take hours. In this contribution, we established the validity of applying the Lagrangian rCFD method to spouted beds by demonstrating the accurate reproduction of the particle residence time distribution in a fictitious spray zone. The deposition of spray droplets onto tracer particles was simulated for 1 h, and the particle surface coverage distribution was estimated using a statistical approach for both an unstabilized prismatic spouted bed and one stabilized by draft plates.Paul Kieckhefena Thomas Lichtenegger Swantje Pietsch Stefan Pirker Stefan Heinrich 2019Particuology2019,17,1:2
4Antigen-specific Tregs control T cell responses against a limited repertoire of tumor antigens in patients with colorectal carcinoma显示文摘Bonertz Andreas Weitz Jürgen Pietsch Dong-Ho Kim Rahbari Nuh N Schlude Christoph Ge Yingzi Juenger Simone Vlodavsky Israel Khazaie Khashayarsha Jaeger Dirk Reissfelder Christoph Antolovic Dalibor Aigner Maximilian Koch Moritz Beckhove Phili 2009Journal of Clinical Investigation2009,,11:2
5Hepatic stem-like cells in hepatoblastoma: expression of cytokeratin 7, albumin and oval cell associated antigens detected by OV-1 and Ov-6显示文摘 Xiao JC Pietsch T 1997Histopathology1997,31,:1
6Superparamagnetic Iron Oxide Particles: Contrast Media for Magnetic Resonance Imaging显示文摘Lawaczeck R Menzel M Pietsch H 2004Appl Organomet Chem2004,,18:1
7Carbons as supports for industrial precious metal catalysts 显示文摘Auer E Freund A Pietsch J 1998Applied Catalysis A : General1998,173,2:1
8Modemisation Measure and Latest Technological Developments in Tube Rolling Mills显示文摘Johannes Koch Rolf wingens Hans Joachim Pehle Jurgen Pietsch Thomas Leisten 2002MPT International2002,,1:1
9A method for preparation of fecal DNA suitable for PCR显示文摘Deuter R Pietsch S Hertel S 1995Nucleic Acids Res1995,23,18:1
10IUPAC collaborative trial study of a method to detect genetically modified soybeans and maize in dried powder 显示文摘Lipp M Brodmann P Pietsch K 1999J AOAC Int1999,82,4:1
11Anaplastic ganglioglioma in children显示文摘Karremann M Pietsch T Janssen G 2009J Neurooncol2009,92,2:1
12From tibiofemoral instability to dislocation in total knee arthroplasty显示文摘Pietsch M Hofmann S 2007Orthopade2007,36,10:1
13Low grade chias-matichypothalamic glioma: earboplatin and vincristin chemotherapy effectively defers radiotherapy within a comprehensive treatment strategy-report from the multicenter treatment study for children and adolescents with a low grade glioma-HIT-LGG 1996-of the Society of Pediatric Oncology and Hematology (GPOH) 显示文摘Gnekow AK Kortmann R-D Pietsch T 2004Klin Padiatr2004,216,:1
14Using mechanistic modelling within forest ecosystem restoration 显示文摘Stephan A Pietsch Hubert Hasenauer 2002Forest Ecology and Management2002,159,:1
15Tyrosinase gene mutations in oculoeutaneous albinism1 (OCA1) : definition of the phenotype 显示文摘KING R A PIETSCH J FRYER J P 2003Hum Genet2003,113,6:1
16The development of dielectric barrier discharges in gas gaps and on surfaces显示文摘Gibalov V Pietsch G J 2000Journal of Physics D= Applied Physics2000,33,20:1
17The Victorian Active Script Pro- gramme: promising signs for general practitioners, population health, and the promotion of physical activity显示文摘SIMS J HUANG N PIETSCH J 2004Br J Sports Med2004,38,:1
18The p53 family and programmed cell death显示文摘Pietsch EC Sykes SM McMahon SB 2008Oncogene2008,27,50:1
19Chondroblastoma of the patella with pathological fracture显示文摘Rischke B Engels C Pietsch E 2000Unfallchirurgie2000,103,10:1
20IUPAC collaborative trial study of a method to detect genetically modified soybeans and maize in dried powder显示文摘Lipp M Brodmann P Pietsch K 1999J AOAC Int1999,82,:1
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