in this article, an algorithm for designing of a supersonic wind tunnel injection nozzle ejector is presented and based on this algorithm, a new ejector is designed for a supersonic wind tunnel. the injection nozzle consists of a volute, a nozzle, and several vanes. designed injection nozzle is simulated numerically, and the results are compared with the present injection nozzle. the results sh...

One well-known method for the verification and certification of NPP I&C and other safety critical systems is the fault injection technique (FIT). FIT is based on a design fault injection and vulnerability injection into the software code and the field-programmable gate array (FPGA) design or a physical fault injection into hardware modules. The requirements for FIT for safety critical applicati...

One of the mostly used enhanced oil recovery methods is the injection of water or gas under pressure to maintain or reverse the declining pressure in a reservoir. Several parameters should be optimized in a fluid injection process. The usual optimizing methods evaluate several scenarios to find the best solution. Since it is required to run the reservoir simulator hundreds of times, the process...

abstract the aim of this study was to eliminate zn deficiency and increasing yield in grapevine (vitis vinifera l) cv, askari، via trunk injection method. the experiment was carried out in the cisakht region; in randomize complete blocks design with four treatments and four replications. treatments included of zinc trunk injection in concentration 0.15, 0.3 and 0.5% amount of 500 cc was injecte...

In part one of this series, Moore (2004a) introduced the general principles of stream gauging by salt dilution. In subsequent articles, Moore (2004b, 2005) described techniques of constant-rate injection and slug injection using salt in solution. This is the final article in the series and details the “mass balance method.” Originally described by Elder et al. (1990), the mass balance method di...

Background: Intravenous injection is a medical procedure, often accompanied by pain and distress in children. Thus the reduction of such pain and distress becomes the responsibility of health care professionals to an extent as possible while maintaining patient safety by using various pharmacological and non pharmacological interventions. Method: A quasi experimental study was undertaken on chi...