نتایج جستجو برای: soil structure interactions

تعداد نتایج: 2052818  

Journal: :international journal of civil engineering 0
amir hossein jafarieh p.o. box: 11155-9313, tehran, iran mohammad ali ghannad p.o. box: 11155-9313, tehran, iran

it is well-known that the behavior of soil-structure systems can be well described using a limited number of non-dimensional parameters. this is the outcome of researches based on the premise that the foundation is bonded to the ground. here, it is shown the concept can be extended to systems with foundation uplift. a set of non-dimensional parameters are introduced which controls the main feat...

Journal: :The New phytologist 2006
Matthias C Rillig Daniel L Mummey

In addition to their well-recognized roles in plant nutrition and communities, mycorrhizas can influence the key ecosystem process of soil aggregation. Here we review the contribution of mycorrhizas, mostly focused on arbuscular mycorrhizal fungi (AMF), to soil structure at various hierarchical levels: plant community; individual root; and the soil mycelium. There are a suite of mechanisms by w...

2018
Qisong Li Jun Chen Linkun Wu Xiaomian Luo Na Li Yasir Arafat Sheng Lin Wenxiong Lin

Intercropping has been widely used to control disease and improve yield in agriculture. In this study, maize and peanut were used for non-separation intercropping (NS), semi-separation intercropping (SS) using a nylon net, and complete separation intercropping (CS) using a plastic sheet. In field experiments, two-year land equivalent ratios (LERs) showed yield advantages due to belowground inte...

2014
Mohd Ahmed Mahmoud H. Mohamed Javed Mallick Mohd Abul Hasan

The analysis of building structure in contact with soil involves an interactive process of stresses and strains developed within the structure and the soil field. The response of Piled-Raft Foundation system to the structure is very challenging because there is an important interplay between the component of building structure and the soil field. Herein, soil-foundation-structure interaction of...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
sara tarighi ali reza abbasi iran sheikhshoaie niaz monadi

the structure of n,n'-bis(2-hydroxybenzylidene)-2,2-dimethyl-1,3-propanediamine, c19h22n2o2, has been studied at low temperature (120k) by means of single-crystal x-ray diffraction. solving the structure shows an orthorhombic unit cell, with p212121 space group, z = 4, a = 6.1046 (4) å, b = 15.8349 (11)å, c = 17.2898 (12) å and v = 1671.3 (2) å3. there are two relatively strong hydrogen bonds (...

2009
Shuhua Yi A. David McGuire Jennifer Harden Eric Kasischke Kristen Manies Larry Hinzman Anna Liljedahl Jim Randerson Heping Liu Vladimir Romanovsky Sergei Marchenko Yongwon Kim

[1] Soil temperature and moisture are important factors that control many ecosystem processes. However, interactions between soil thermal and hydrological processes are not adequately understood in cold regions, where the frozen soil, fire disturbance, and soil drainage play important roles in controlling interactions among these processes. These interactions were investigated with a new ecosys...

2013
Lilia C. Carvalhais Paul G. Dennis Dayakar V. Badri Gene W. Tyson Jorge M. Vivanco Peer M. Schenk

Jasmonic acid (JA) signalling plays a central role in plant defences against necrotrophic pathogens and herbivorous insects, which afflict both roots and shoots. This pathway is also activated following the interaction with beneficial microbes that may lead to induced systemic resistance. Activation of the JA signalling pathway via application of methyl jasmonate (MeJA) alters the composition o...

Journal: :Journal of Marine Science and Engineering 2022

This Special Issue contains 12 papers devoted to fluid/structure interaction (FSI) problems [...]

Journal: :The New phytologist 2017
Aurore Kaisermann Franciska T de Vries Robert I Griffiths Richard D Bardgett

Interactions between aboveground and belowground biota have the potential to modify ecosystem responses to climate change, yet little is known about how drought influences plant-soil feedbacks with respect to microbial mediation of plant community dynamics. We tested the hypothesis that drought modifies plant-soil feedback with consequences for plant competition. We measured net pairwise plant-...

2011
Baodong Liu Miaoxin Zhang Pengfei Li Zhimao Feng

Based on an actual corrugated steel plate arch bridge, considering soil-structure interaction, by using the finite element program of ANSYS, a 2-D finite element model was set up to analyze the soil pressure and structural deformation under different load conditions in detail. Since this type of structure relies on the soil-structure interaction to share the load, as the structural parameters h...

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