نتایج جستجو برای: pw
تعداد نتایج: 2291 فیلتر نتایج به سال:
Produced water (PW) generation has been increasing recently due to the expansion of fossil fuel extraction and aging oil wells worldwide, especially in United States. The adverse health risks, seismicity, environmental impacts associated with PW have become a challenging concern. Therefore, there is increased demand for improved treatment reuse management options. There are multiple methods tre...
Abstract Background Early diagnosis of cardiac amyloidosis (CA) is warranted to initiate specific treatment and improve outcomes. Conventional echocardiography unable reliably differentiate CA from other causes increased left ventricular (LV) wall thickness. Purpose To demonstrate the value a multiparametric approach utilising both standard advanced echocardiographic measures distinguish pathol...
background: this study aimed to investigate the pedicle dimension and angulation in cervicothoracic junction (ctj) using the findings of computed tomographic (ct) to help accurate insertion of pedicular screw. methods: forty three patients with high quality ct images of ctj were evaluated. pedicle width (pw), pedicle height (ph), pedicle axis length (pal), transverse angle (ta) and sagittal ang...
Valorisation of glycerol with cinnamaldehyde over phosphotungstic acid encapsulated on a NaY zeolite
• Acetalization of glycerol with cinnamaldehyde was performed using PW immobilized on NaY. The material NaY-PW4 showed high activity. Good selectivity to (2-(2-phenyl-1-ethenyl)-1,3-dioxolan-4-yl)methanol product. After fifth utilizations, the good Glycerol reacted over phosphotungstic acid (PW) encapsulated NaY at 100°C. Catalysts containing different contents were prepared. activity increased...
Whole-cell voltage recordings were made in vivo from excitatory neurons (n = 23) in layer 4 of the barrel cortex in urethane-anaesthetised rats. Their receptive fields (RFs) for a brief whisker deflection were mapped, the position of the cell soma relative to barrel borders was determined for 15 cells and dendritic and axonal arbors were reconstructed for all cells. Three classes of neurons wer...
A global, 10-yr (February 1997–April 2006), 2-hourly dataset of atmospheric precipitable water (PW) was produced from ground-based global positioning system (GPS) measurements of zenith tropospheric delay (ZTD) at approximately 350 International Global Navigation Satellite Systems (GNSS) Service (IGS) ground stations. A total of 130 pairs of radiosonde and GPS stations are found within a 50-km ...
Methods A total of 43 consecutive patients (age 44 10 years) with moderate to severe PVS referred to Royal Brompton Hospital from 2002 to 2005 were retrospectively studied. Patient New York Heart Association (NYHA) functional class was recorded. The RV (lateral tricuspid annulus motion) long-axis movement was measured by M-mode and pulsed-wave (PW) tissue Doppler imaging (TDI). Restrictive RV p...
A porous-wall hollow glass microsphere (PW-HGM) was investigated as an optical resonator for chemical vapor sensing. A single mode optical fiber taper was used to interrogate the microresonator. Adsorption of chemical molecules into the nanosized pores induced a refractive index change of the thin wall and thus a shift in its resonance spectrum. The PW-HGM resonator had shown higher vapor detec...
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