نتایج جستجو برای: pressurized fluid extraction

تعداد نتایج: 386894  

2009
Hailing Yu Yim Tang Jeffrey Gordon David Jeong

This paper presents a computational study of the fluid-structure interaction (FSI) mechanism in pressurized commodity tank cars in railroad application. Within the Lagrangian framework of Abaqus/Explicit, finite element analysis (FEA) is conducted to predict the structural response of tank cars under dynamic impact loading. A three-phase approach is adopted that explicitly models pressurized ga...

Journal: :Retinal cases & brief reports 2012
Baseer U Ahmad Mark R Barakat Marc Feldman Rishi P Singh

OBJECTIVES To report a case of extensive subcutaneous emphysema introduced during vitrectomy while using an advanced feedback-controlled pressurized infusion system. METHODS Clinical case report of a 56-year-old woman undergoing pars plana vitrectomy for rhegmatogenous retinal detachment of the left eye. The clinical and radiologic findings of the patient's eyes were documented. The mechanism...

Journal: :Annals of the Academy of Medicine, Singapore 2008
Saminathan S Nathan Andrew G Huvos Jorge E Casas-Ganem Rui Yang Irina Linkov Rebecca Sowers Gene R DiResta Richard Gorlick John H Healey

We have previously shown that osteosarcomas (OS) have states of increased interstitial fluid pressure (IFP), which correlate with increased proliferation and chemosensitivity. In this study, we hypothesized that constitutively raised IFP in OS regulates angiogenesis. Sixteen patients with the clinical diagnosis of OS underwent blood flow and IFP readings by the wick-in-needle method at the time...

2013
Petri Kilpeläinen Veikko Kitunen Andrey Pranovich Hannu Ilvesniemi Stefan Willför

Birch sawdust was extracted with a pressurized hot water (PHW) flowthrough system. The pH of the extract was controlled during extraction by the addition of acetic acid/sodium acetate buffer. Three different pH levels, 4.0, 4.2, and 4.6, were used. Extraction temperatures were 160, 170, and 180 °C, with a constant 4 mL/min flow rate through the 50 mL extraction vessel. During PHW extraction wit...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Rosa Ana Pérez Beatriz Albero Esther Miguel José Luis Tadeo Consuelo Sánchez-Brunete

In this work, a rapid and sensitive method, based on ultrasound-assisted extraction of samples with a small volume of toluene, has been developed for the quantification of C60 and C70 fullerenes in soil and sediments. Good extraction efficiencies were obtained at all of the fortification levels studied (200, 100, 20 and 2 ng/g), which ranged from 72 to 104%. An important effect of the extractio...

Journal: :The Journal of chemical physics 2010
Maikel M van Iersel Robert Mettin Nieck E Benes Dirk Schwarzer Jos T F Keurentjes

Using high-speed visualization we demonstrate that ultrasound irradiation of pressurized carbon dioxide (CO(2)) induces phenomena that do not occur in ordinary liquids at ambient conditions. For a near-critical mixture of CO(2) and argon, sonication leads to extremely fast local phase separation, in which the system enters and leaves the two-phase region with the frequency of the imposed sound ...

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