نتایج جستجو برای: root reinforcement

تعداد نتایج: 179037  

Journal: :Annals of botany 2008
Frédéric Danjon David H Barker Michael Drexhage Alexia Stokes

BACKGROUND The contribution of vegetation to shallow-slope stability is of major importance in landslide-prone regions. However, existing slope stability models use only limited plant root architectural parameters. This study aims to provide a chain of tools useful for determining the contribution of tree roots to soil reinforcement. METHODS Three-dimensional digitizing in situ was used to ob...

Journal: :Forest Ecology and Management 2021

Root reinforcement is a mechanism through which forests contribute to the prevention and mitigation of shallow instabilities in soils, one main hazards mountain areas. This study aims assess how spatial tree distribution whether thinning operations affect root most common forest types European Southern Alps. We measured size position trees 119 stands, belonging sweet chestnut, beech, Norway spr...

2015
Vanessa Torraca Peraro Vaz Cristina Dupim Presoto André Gustavo Paleari Fernando Mandarino André Marcelo Peruchi Minto Osmir Batista de Oliveira Junior Marcelo Ferrarezi de Andrade

The “biological restoration” is an excellent technique for reconstruction in young traumatized teeth, which is used as intra-root reinforcement an extracted natural tooth. This article reports a case where an 11-year-old patient had his upper incisors affected by fractures from trauma. Due to the young age of the patient, the absence of the natural tooth fragment, the major structural loss and ...

Journal: :Journal of the Japanese Society of Revegetation Technology 2015

2009
E. Comino

Problem statement: The presence of vegetation increases the soil burden stability along slopes and reduces soil erosion. Its contribution is due to mechanical (reinforcing soil shear resistance) and hydrologic controls on streambank and superficial landslides. This study presented the results carried out from experimental in situ test focused to study the increased shear resistance of soil bloc...

Journal: :Annals of vascular diseases 2015
Hirohito Ishii Kunihide Nakamura Hiroyuki Nagahama Masakazu Matsuyama George Endo Masanori Nishimura

A 54-year-old female with acute heart failure due to aortic regurgitation (AR) was admitted to our hospital. Following admission, her condition worsened progressively; thus, surgery was performed prematurely. During surgery, two dehiscences were visualized in the aortic valve commissure between the right and left cusps and the upper part of the left coronary artery ostium. However we scheduled ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان فارس - دانشکده دندانپزشکی 1380

چکیده ندارد.

2016
Yuanjun Yang Lihua Chen Ning Li Qiufen Zhang

The stabilization of slopes by vegetation has been a topical issue for many years. Root mechanical characteristics significantly influence soil reinforcement; therefore it is necessary to research into the indicators of root tensile properties. In this study, we explored the influence of root moisture content on tensile resistance and strength with different root diameters and for different tre...

Journal: :journal of seismology and earthquake engineering 0
p. sunitha indian institute of technology madras c.v.r. murty indian institute of technology madras rupen goswami indian institute of technology madras

methods are proposed to develop idealized moment-curvature response curves of slender rectangular rc wall sections with uniformly distributed longitudinal reinforcement, using limit states, namely, cracking of concrete in tension, tensile yielding of reinforcement layers, and compression failure of concrete. it is recommended that tensile yielding of an inner layer of reinforcement is considere...

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