this study compared the effects of anesthesia with isoflurane and tiva (total intravenous anesthesia) on the intensity of body temperature reduction during anesthesia and incidence of chills after lumbar disc surgery. the study was done as a single blinded randomized clinical trial. from 60 patients who underwent lumbar disc surgery, 30 subjects were placed in isoflurane group and 30 in the tiv...

Aluminum alloys are considered a lot in the automotive and aerospace industry because of their high strength to weight ratio. In this manuscript, the gas forming process of aluminum AA6063 tubes at high temperatures up to 500°C is investigated, through experimental and numerical tests. Therefore, an experimental setup is prepared and so, tube specimens are formed in a die with square cross sect...

the effects of operating parameters such as feed temperature and permeate-side pressure on the performance of a commercial pva membrane in the dehydration of toluene by a pervaporation (pv) membrane system is studied in the present work. the results obtained indicate that increasing temperature in the range of 40 to 70 °c and reducing permeate pressure in the range of 1 to 10 mmhg increase memb...

2014 High pressure neutron diffraction experiments show that the angles of tilt of the TCNQ and TTF molecules to the stacking axis do not change under pressure. This result, together with measurements of the pressure dependence of the conductivity as a function of temperature, is used to derive the constant volume stacking axis resistivity of TTF-TCNQ. The temperature dependence is strongly red...

introduction air pollution as one of the most important technological risks of contemporary era is mainly resulted from the emergence of large cities and fast growing industries. one of the main objectives of climatic and environmental studies is to survey atmospheric pollutions. tabriz is one of the metropolises where air pollution is a problem in it. of course, what is essential regarding the...