نتایج جستجو برای: soil structure interactions

تعداد نتایج: 2052818  

Journal: :مهندسی عمران فردوسی 0
علیرضا باقریه ایمان لولویی امیرحسین باقریه

earthquakes could have catastrophic impacts on tunnels and buried structures. liquefaction phenomenon is one of the most destructive effects of earthquakes. liquefaction results in decreasing effective stress and this consequently leads to decreases in shear strength of the soil. as a result, large deformation in both soil and buried structure occurs. moreover, liquefaction causes soil boiling,...

2016
Mesfin T. Gebremikael Hanne Steel David Buchan Wim Bert Stefaan De Neve

The role of soil fauna in crucial ecosystem services such as nutrient cycling remains poorly quantified, mainly because of the overly reductionistic approach adopted in most experimental studies. Given that increasing nitrogen inputs in various ecosystems influence the structure and functioning of soil microbes and the activity of fauna, we aimed to quantify the role of the entire soil nematode...

2001
A. I. Frenkel G. V. Korshin

Frenkel, A. I. and Korshin, G. V. 2001. Studies of Cu(II) in soil by X-ray absorption spectroscopy. Can. J. Soil Sci. 81: 271–276. Based on original data for copper, this paper evaluates the use and advantages of X-ray absorption fine structure (XAFS) in studies of heavy metals in soils. The structural parameters of the Cu2+ target were quantified for soil exposed to copper and the same soil el...

2014
Kathleen M. Regan Naoise Nunan Runa S. Boeddinghaus Vanessa Baumgartner Doreen Berner Steffen Boch Yvonne Oelmann Joerg Overmann Daniel Prati Michael Schloter Barbara Schmitt Elisabeth Sorkau Markus Steffens Ellen Kandeler Sven Marhan

Temporal dynamics create unique and often ephemeral conditions that can influence soil microbial biogeography at different spatial scales. This study investigated the relation between decimeter to meter spatial variability of soil microbial community structure, plant diversity, and soil properties at six dates from April through November. We also explored the robustness of these interactions ov...

2018
Zuoxin Tang Xiaolu Sun Zhongkui Luo Nianpeng He Osbert Jianxin Sun

How biotic and abiotic factors influence soil carbon (C) mineralization rate (RS) has recently emerged as one of the focal interests in ecological studies. To determine the relative effects of temperature, soil substrate and microbial community on Rs, we conducted a laboratory experiment involving reciprocal microbial inoculations of three zonal forest soils, and measured RS over a 61-day perio...

Journal: :Biology letters 2011
Emmanuel Defossez Benoît Courbaud Benoît Marcais Wilfried Thuiller Elena Granda Georges Kunstler

Theoretical models predict weakening of negative biotic interactions and strengthening of positive interactions with increasing abiotic stress. However, most empirical tests have been restricted to plant-plant interactions. No empirical study has examined theoretical predictions of interactions between plants and below-ground micro-organisms, although soil biota strongly regulates plant communi...

This paper aims to study the influence of soil-structure interaction on plastic energy demand spectra directly derived from the energy-balance equations of soil-shallow-foundation structure with respect to an ensemble of far-field strong ground motions obtained from Pacific Earthquake Engineering Research (PEER) database and recorded on alluvium soil. The superstructure is modeled as a single-d...

2016
Jakub Ridl Michal Kolar Michal Strejcek Hynek Strnad Petr Stursa Jan Paces Tomas Macek Ondrej Uhlik

Plant-microbe interactions are of particular importance in polluted soils. This study sought to determine how selected plants (horseradish, black nightshade and tobacco) and NPK mineral fertilization shape the structure of soil microbial communities in legacy contaminated soil and the resultant impact of treatment on the soil microbial community functional potential. To explore these objectives...

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