this paper presents noise problems associated with the use of air-turbine drills in dental practice. two hundred and fifty dentists (male and female) were randomly selected from the faculty of dentistry as well as the dentists who worked private in tehran. the results indicated that the mean value of sound pressure level produced by the high-speed drills was 69.1 db. most of the energy from the...

patients and methods in a double-blind clinical trial, 103 patients (american society of anesthesiologists class i, ii) aged 18 - 45 years old, who were septorhinoplasty candidates, were randomly assigned into two groups, a 900 mg gabapentin group and placebo, in amir-al-momenin academic hospital. the drug was prescribed to the patients orally, 2 hours before the operation. anesthetic technique...

conclusions nursing and midwifery students did not significantly differ in terms of communication with patients with severe communication problems. most of the students had low or very low knowledge and skills in communication with patients with hearing impairment. however, they had better skills in communication with patient with speech problem. special workshops or training programs are recom...

polyanionic cellulose polymer is used as an additive in drilling mud in order to decrease water loss and mudcake- thickness. in this study effect of bulk and nanosize polyanionic cellulose on water loss and mud-cakethickness in mud drilling is investigated. polyanionic cellulose nanoparticles are made by using of ball milling. size of nanoparticles is measured by particle size analyzer. polyani...

background hearing loss is the most common congenital disorder the incidence of which is further increased in the presence of risk factors for hearing loss among newborns admitted to the neonatal intensive care unit (nicu). the aim of this study was early diagnosis and intervention for hearing loss in newborns discharged from nicu. materials and methods this prospective cohort study was conduct...

conclusions in the newly set up center similar to the older one, surgical treatment in our follow up duration was effective for reducing weight, body mass index reduction and achievement of success in biochemical markers on diabetics. results during follow up time after 276 days mean weight decreased from 118.7 ± 23.3 to 82.9 ± 15.7, p < 0.001 bmi also changed from 45.2 ± 1.8 to 32.2 ± 1.3, p <...

background: auditory rehabilitation isone of the important tasks of speech-language pathologists. so, it is necessary to know auditory behaviors in order to make some decisions about the children with hearing loss such as determining the effectiveness of the current rehabilitation programs and/or devices. the auditory behavior in everyday life (abel) questionnaire is a valid and reliable assess...

many factors affect yield loss in wheat harvesting with a grain combine harvester and there is no mathematical model to describe the behavior of this complex system. thus in this study, a fuzzy logic controller (flc) was designed, implemented and tested for the automatic settings of cylinder speed, concave clearance, fan speed and forward speed of a model 955 john deere combine. first, the mech...

background: this study aimed to compare the effects of simultaneous eight-week stretching and strengthening trainings and exercises with core stability exercises on the flat foot deformity of female students with the age ranges from 9 to 13 years.   methods and materials: in the present quasi-experimental study on 130 female students, 60 girls with flat feet and the age ranges from 9 to 13,were...

background: traffic noise is one of the major sources of environmental pollution that can cause permanent or temporary loss of hearing in drivers. the purpose of this study was to estimate the prevalence of hearing loss among professional long-distance drivers in bandar abbas freight terminal. methods: one thousand long distance occupational drivers in bandar abbas freight terminal not certifie...