نتایج جستجو برای: 30zn tube
تعداد نتایج: 96555 فیلتر نتایج به سال:
BACKGROUND Long-tube decompression has achieved a 75% to 80% success rate in 5 studies, and the short tube had a 40% success rate in 3 studies. METHODS From 1984 to 1991, an endoscope-advanced long intestinal tube was placed into the jejunum in 17 patients, and from 1992 to 2004 an improved long tube was used in 23 patients. Costs were calculated for each type of procedure. RESULTS In the f...
INTRODUCTION The 'order of draw' has been advocated since 1982 to reduce the risk of cross-contaminating blood tubes with additives from a previously filled tube. METHODS We studied 193 patients receiving oral anticoagulation. Multiple tubes were collected in a specific order using the Sarstedt Safety Monovette System. We evaluated the effect of the 'order of draw' on the prothrombin time/int...
This study was performed to compare the amount of air leakage into the thoracic cavity associated with three thoracostomy tube materials (silicone, polyvinyl chloride, red rubber) in canine cadavers. Differences in intrapleural pressures (IPPs) measured before and after tube placement and before and after tube removal were calculated. The duration of air leakage around the tubes was assessed by...
The tube to tube sheet welding joints of heat exchanger is the most critical joints. A special Nondestructive testing technology was proposed, which is based on the digital radiographic imaging automatic inspection system to the characteristics on the tube to tube sheet welding joints of heat exchanger. A new style Linear Diode Arrays as a device is used to receive ray, which will be fixed on a...
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