this research includes both experimental and cfd investigation in the hydrodynamic behavior of a new type of column tray introduced as “concap” tray. the proposed column tray is used in contactor columns especially in stripping columns. the hydrodynamics of this concap tray is investigated in a 1.2m in diameter column. using air-water system, the experiments were performed for different liquid ...

investigating pressure applied in surface vertically that is done by use of mechanical procedures isn’t efficient to measure pressure applied in inner surface of reservoir or pipes having gas due to entering pressure into whole walls and different surfaces. So, in order to measure this kind of pressure, several studies were conducted in past decades and also various procedures were proposed tha...

The nature and cause of ureteral contraction has been studied by many authors, using various methods 1)2). An electro manometer with a sensitive strain gauge has been extensively used for the past about fifteen years to permit a more precise interpretation of ureteral contraction 3J·115l. This paper describes the peristaltic activity and dynamic gradients of both human and dog ureters in vivo. ...

The purpose of this article is to describe a manometer which we have developed during the past year for studies in metabolism and which appears to include a number of features of wide-spread use and interest. It is a combination manometer, offering in a single apparatus the possibilities of either direct or differential manometric measurements. For direct measurements it is the equivalent of tw...

The application of automated blood pressure measurement during exercise has been limited by inaccuracies introduced by the effects of accompanying motion and noise. We evaluated a newly developed automated blood pressure monitor for measuring exercise blood pressure (Colin STBP-680; Colin, San Antonio, Texas, USA). The STBP-680 uses acoustic transduction with the assistance of the electrocardio...

FENTANYL ANn DROPFRIDOL, adrainistered either separately or combined in a fixed ratio of 1:50 as "Innovar," have been recommended as adjuncts to local anaesthesia for a wide variety of procedures. 1~ These have included diagnostic procedures, such as cerebral angiography a.~ on neurosurgieal patients, despite the well documented respiratory depression 6,7 associated with "Innovar" and fentanil....

Pumps are fluid machines whose uses very broad and important, ranging from industry to household needs. Selection of pump performance characteristics is important must be adjusted the needs which include: discharge, head, power, rotation. The obtained through testing. In connection with importance information about characteristics, this research activity efforts will made test centrifugal pumps...

This research includes both experimental and CFD investigation in the hydrodynamic behavior of a new type of column tray introduced as “Concap” tray. The proposed column tray is used in contactor columns especially in stripping columns. The hydrodynamics of this Concap tray is investigated in a 1.2m in diameter column. Using air-water system, the experiments were performed for different liquid ...

In the history of clinical immunoassay, even up to the present day, no group of tests has been subjected to more scrutiny and controversy than analog-type freeanalyte assays (1– 4 ). Unfortunately, inappropriate design of many experiments has led users to an incorrect perspective of how analog assays work. An analysis of the important series of studies by Nelson and coworkers (5–10 ) shows that...