Flash Boiling atomization is one of the most effective means of generating a fine and narrow-dispersed spray. Unless its complexity its potential has not been fully realized. In This Paper, a three dimensional chamber has been modeled with a straight fuel injector. Effect of Flash Boiling has been investigated by computational fluid dynamics (CFD) techniques. A finite volume approach with the ...

background and purpose: sample size and its determination is one of the most important problems in health researches. calculating sample size for prevalence studies is one of the common questions of sample size topics. minimum sample size with least complexity is desirable in order to achieve the basic goal of these studies. this study aims to compare two formulas of sample size calculation for...

In the past few years, demands on flash flood forecasting have grown. The Flash Flood Indicator (FFI) is a system used at Czech Hydrometeorological Institute for evaluation of risk possible occurrence floods over whole Republic. FFI calculation based current soil saturation, physical-geographical characteristics every considered area, and radar-based quantitative precipitation estimates (QPEs) ...

background escherichia coli o157:h7 is an enteric pathogen which can be frequently found asymptomatically in ruminant mammals, but can cause diseases from mild diarrhea to hemolytic uremic syndrome in humans. methods we developed fluorescent amplification-based specific hybridization (flash–pcr) assay to detect the stx-encoding gene stx-1 of e. coli o157:h7. result pcr product of 336 bp was suc...

Learning skull radiography techniques is time consuming and difficult, due to the variety of these techniques. Each year, poor employee performance of the radiology unit, impose repetitive radiographs, and a heavy burden on the health system, as well as double exposure of patients and staff. According to the results of the current investigation, comparing student’s opinions revealed that ...

background: the most common symptoms experienced by women are hot flashes are around the time of menopause. many women are interested in herbal medicines because of fear of side effect of hormone therapy. objective: in this study, we seek to assess the effectiveness of herbal medicine on the recurrence of hot flash in menopausal women. methods: the database of medline, scopus, and the cochrane ...

background: hot flashes are the most common symptoms experienced by women around the time of menopause. many women are interested in herbal medicines because of fear of side effects of hormone therapy. objective: the aim of this systematic review was to assess the effectiveness of iranian herbal medicines in alleviating hot flashes. materials and methods: medline (1966 to january 2015), scopus ...

Sodium sulfate accumulation in the water system is a common problem production of primary metals from sulfide minerals. In flash smelting-flash converting copper smelters, when molten matte quenched industrial to produce granules, Na2SO4 precipitated and entered system, which had negative influence on process. The reaction behaviors powder containing have been studied through thermodynamic calc...