نتایج جستجو برای: injection port

تعداد نتایج: 184001  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

2014
Yunho Hwang Xing Xu Reinhard Radermacher Hung Pham Hung M. Pham

Vapor refrigerant injection cycle with a flash tank has proven to be effective in improving system performance significantly at extremely low and high ambient temperatures. However, the control strategy of operating the system is still unclear. There is no open publication on the comprehensive study of the vapor injection cycle control strategy to date. This paper presents the experimental inve...

2014
Fei Liu Yingjiang Ma Rong Zhuang Hui Huang

Nowadays Heat pump water heater becomes a very hot topic in hot water industry. However it has many problems because of higher condensing temperature and large-scale operation conditions. Based on the problems, this paper presents a prototype which was assembled using a rotary compressor with refrigerant injection port. By making use of the liquid injection function of the compressor, the syste...

Journal: :Egyptian Journal of Anaesthesia 2017

Journal: :British journal of anaesthesia 1972
M J Cousins R I Mazze

Sir,—It was interesting to read that Drs Jones, Molloy and Rosen used a similar injection technique to ours for analysis of volatile anaesthetics in whole blood (Brit. J. Anaesth. (1972), 44, 124). We have found pretreatment of blood samples to be unnecessary if glass liners are used in the injection port, columns are made of liquid methyl silicone (OV101) and the solid support is Chromosorb W ...

Journal: :Environmental science & technology 2007
W Labaky J F Devlin R W Gillham

A novel method of measuring small-scale groundwater velocities in unconsolidated noncohesive media uses the travel time of a tracer pulse between an injection port and two detectors located on the surface of a cylindrical probe, called a point-velocity probe (PVP), as the basis for velocity estimation. The direction and magnitude of the water velocity vector were determined to within +/- 9% of ...

2013
Gérard Guiffant Jean Jacques Durussel Patrice Flaud Laurent Royon Pierre Yves Marcy Jacques Merckx

PURPOSE The use of totally implantable venous access devices (TIVADs) certified as "high pressure resistant" or "power port" has begun to spread worldwide as a safe procedure for power contrast injection. Owing to the thermo-rheological properties of the contrast media, the primary aim of this work is to present an in vitro experimental impact study concerning the impact of the temperature leve...

Journal: :Seminars in Interventional Radiology 2011

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1995

Journal: :Anesthesia and analgesia 1994
P C de Jong P J Kansen

The aim of this study was to compare the incidence of technical complications of epidural catheters with subcutaneous injection ports to percutaneous epidural catheters without ports, fixed only by adhesive dressing. We reviewed 149 patients who received 250 epidural catheters for treatment of cancer pain during a 3 1/2-yr period from January 1, 1989, to June 30, 1992. Of the 250 catheters, 52 ...

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