نتایج جستجو برای: suction pressure soil

تعداد نتایج: 590314  

Journal: :journal of agricultural science and technology 2010
a. keyhani d. wulfsohn

a pressure-based coupled heat and mass transfer model was used to simulate temperature and soil suction in a drying process within a clay soil column. closed form functions were used for all parameters needed in the governing equations. model predictions were compared with experimental data using the mean relative percentage deviation method. thermocouples and mini-gypsum blocks were used t...

This paper reports results from an investigation into the suction caissons failure mechanisms under vertical pull-out loads. An insight to the failure mechanisms of suction caissons paves the path for developing analytical solutions to their pull-out capacity. The numerical models of suction caissons have first been calibrated by and verified against several experimental data from other researc...

Journal: :Biological & pharmaceutical bulletin 2014
Kazunori Shimizu Guangyuan Zhang Shigeru Kawakami Yota Taniguchi Kouji Hayashi Mitsuru Hashida Satoshi Konishi

We previously developed an in vivo tissue suction-mediated transfection method (denoted as the tissue suction method) for naked nucleic acids, such as plasmid DNA (pDNA) and small interfering RNA (siRNA), in mice. However, it remains unclear whether the suction pressure conditions affect the results of this method. Therefore, in the present study, we assembled a computer system to control the s...

Abdol Hamid Kamali Adel Asakereh,

Suction caisson is a type of floor foundation for the offshore structures that is also called suction pile, bucket foundation, suction anchor, or sometimes ridge foundation depending on its application. In two past decades, this type of foundation has been widely used around the world as the fixed offshore foundation, anchor of the floating platforms, as well as the foundation of other marine s...

Journal: :Geofluids 2022

The bearing capacity of unsaturated soft soil foundations is affected by natural or artificial hard crust, due to the stress diffusion and closure effect. Based on triple-shear unified solution shear strength for soil, analytical solutions critical edge load with crust are derived consideration lateral pressure coefficient ...

ژورنال: مهندسی دریا 2009
زین الدینی, مصطفی, نبی‌پور, محمود,

Suction caisson foundation systems have been successfully used in the past two decades in numerous occasions on a variety of offshore structures in a wide range of environments. The pull-out capacity of suction caissons remains a critical issue in their applications, and reliable methods of predicting the capacity are required in order to produce effective designs. In the current study a numeri...

Journal: :Canadian Geotechnical Journal 2021

This paper presents an interpretation technique to quantify the effects of compaction state and matric suction on undrained shear strength compacted clay under confined triaxial compression. novel is based mathematical frameworks SHANSEP (Stress History Normalized Soil Engineering Property) method for saturated soil BBM (Barcelona Basic model) unsaturated soil. Test data Calgary till were analy...

Journal: :Physiological and biochemical zoology : PBZ 2002
Richard Svanbäck Peter C Wainwright Lara A Ferry-Graham

The rate and magnitude of buccal expansion are thought to determine the pattern of water flow and the change in buccal pressure during suction feeding. Feeding events that generate higher flow rates should induce stronger suction pressure and allow predators to draw prey from further away. We tested these expectations by measuring the effects of prey capture kinematics on suction pressure and t...

2006
H. Yang H. Rahardjo E.-C. Leong

This paper presents the laboratory test results of vertical infiltration on two soil columns of finer over coarser soils subject to simulated rainfalls under conditions of no-ponding at the surface and constant head at the bottom. The main objectives were to evaluate the effect of rainfall intensity and duration; and to provide experimental evidence for soil water redistribution and hysteresis....

Journal: :Computers & Geosciences 2012
A. Ahangar-Asr A. Johari Akbar A. Javadi

In this paper a new approach is presented based on evolutionary polynomial regression (EPR) for modelling of soil–water characteristic curve in unsaturated soils. EPR is an evolutionary data mining technique that generates a transparent and structured representation of the behaviour of a system directly from data. This method can operate on large quantities of data in order to capture nonlinear...

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