Ischemic tracheal complications due to the ETT cuff occur in approximately 10 percent of mechanically ventilated critically ill patients despite the use of high-volume, low-pressure ETT cuffs. Using a laboratory model, we studied the effects of airway pressure on three different ETT cuff designs, including two "low pressure" designs. Positive airway pressure acted on the "low pressure" cuffs to...

background and aim: menopause refers to the cessation of menstruation due to hormonal changes and ovarian inactivity in women. these changes in hormone levels lead to various health consequences. this period of physiological changes usually starts in women with 40-50 years of age, and is characterized by the reduction of estrogen level. the mortality rate of premenopausal women, due to cardiova...

designing and manufacturing the multiple jets simulator and experimental investigation of the multiple jets in crossflow at low velocity ratios have been studied together with design and build a low-speed wind tunnel. a specific rake is used to determine the flow field pressure and changes in static pressure measured by pressure taps in the near field of the jets. there are generally three regi...

abstract   background: irregular working hours, including night work and shift work, have been found to be associated with alteration in various levels of biochemical factors. and some studies have showed association between shift work and blood biochemical disturbances in blood. in this epidemiological study we investigated, whether regular schedule of working hours can minimize the associated...

case presentation the patient was a 45-year-old male with t8 complete paraplegia; he had developed severe pressure ulcer. the authors used lllt as a complementary treatment. they used 980 nm, continuous 6 j/cm2 for margins and 655 nm, continuous 1.8 j/cm2 for bed of the ulcer, along with intravascular laser therapy. after 24 sessions of lllt and z-plasty surgery, the ulcer healed completely. co...

Volumetric techniques were employed to study the adsorption of CO2 on a purified multi-wall carbon nanotubes (MWNT’s) sample, as a mesoporous material, at isothermal conditions of 288, 293 and 298 K and pressures ranging from 30 to 150 kPa. Langmuir, Freundlich and Sips equations were used to represent the isotherms. Also the parameters of these fitted isotherm models have been determined. The ...

Designing and manufacturing the multiple jets simulator and experimental investigation of the multiple jets in crossflow at low velocity ratios have been studied Together with design and build a low-speed wind tunnel. A specific rake is used to determine the flow field pressure and changes in static pressure measured by pressure taps in the near field of the jets. There are generally three regi...