نتایج جستجو برای: suction pressure soil
تعداد نتایج: 590314 فیلتر نتایج به سال:
PURPOSE To compare the short-term outcome in patients with or without a drain (short duration and low suction pressure) following total knee replacement (TKR). METHODS A consecutive series of 106 women and 48 men (mean age, 69 years) underwent unilateral TKR. The first 77 patients used a low suction pressure (200 mm Hg) drain following TKR for 24 hours, and the next 77 patients used no drain....
Suction of endotracheal tube in ICU can cause hemodynamic changes. We compare the effect of lidocaine , fentanyl and placebo on reducing hemodynamic changes following suction in ICU patient. Patients were divided into three groups , each containing twenty ...
AIM To assess the suitability of ketamine for relief of pain caused by tracheal suction during ventilator treatment in newborn infants. STUDY DESIGN In a randomised, double blind, cross over trial, 16 newborn infants received placebo or 0.5, 1, or 2 mg/kg ketamine as two minute infusions in random order five minutes before four separate endotracheal suctions, with intervals of at least 12 hou...
Lott ME, Hogeman C, Herr M, Bhagat M, Kunselman A, Sinoway LI. Vasoconstrictor responses in the upper and lower limbs to increases in transmural pressure. J Appl Physiol 106: 302–310, 2009. First published November 13, 2008; doi:10.1152/japplphysiol.90449.2008.—The purpose of this study was to examine upper and lower limb vasoconstrictor responses to changes in transmural pressure in humans. Br...
Due to high swelling-shrinkage caused by climate change, expansive soil is a significant problem in light construction, road embankments, and slope stability (wet dry). The physical mechanical properties of the are affected repeated drying wetting cycles, particularly changes volume, negative pore water pressure (suction), compressive strength. Fly ash used increase strength reduce plasticity s...
PURPOSE To investigate the relationship between choroidal blood velocity (ChBVel), blood volume (ChBVol) and blood flow (ChBF) in the foveal region of the human ocular fundus and ocular perfusion pressure and to determine whether the choroidal circulation has some autoregulatory capacity. METHODS Measurements of ChBVel, ChBVol and ChBF were obtained by laser Doppler flowmetry in healthy subje...
Slope failure is a common phenomenon all over the world on both man-made and natural slopes. Prolonged rainfall one of climatic factors which largely responsible for slope failure. During heavy prolonged rainfall, part rainwater infiltrates through soil seeps into slope. The infiltrated water lowers matric suction increases porewater pressure. Eventually, generated pressure decreases strength r...
Nowadays, the Beerkan computational algorithms (BESTslope and BESTsteday) are known as the suitable indirect methods for estimating soil saturated hydraulic conductivity (Ks) and sorptivity (S), as well as the scale parameter (hg) in van Genuchten soil water retention equation through the data collected in the Beerkan infiltration experiment and other required data. The purpose of this study wa...
The hysteresis characteristics of soil-water characteristic curves (SWCCs) under dry-wet cycling conditions are very important for understanding unsaturated soil properties, so it is crucial to propose an accurate and efficient method predicting the hysteretic behaviors SWCCs. To this end, paper investigates SWCCs in full suction range seven kinds Hunan red clay with different initial dry densi...
We investigated the determinants of ventricular early diastolic lengthening and mechanics of suction using a mathematical model of the left ventricle (LV). The model was based on a force balance between the force represented by LV pressure (LVP) and active and passive myocardial forces. The predicted lengthening velocity (e') from the model agreed well with measurements from 10 dogs during 5 di...
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