نتایج جستجو برای: hearing protective devices
تعداد نتایج: 424940 فیلتر نتایج به سال:
study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Background and Objective: Early detection of neonatal hearing disorders is a suitable measure of speech and behavioral development. The aim of this study was to determine the prevalence of hearing disorder in high-risk neonates treated in a neonatal intensive care unit (NICU). Materials and Methods: This descriptive study was performed on 150 neonates treated in the NICU of Besat Hospital in ...
Two versions are described of a self-test of hearing. The hi HealthInnovations Clinic Version is designed to allow self-measurement of pure tone air conduction thresholds at selected frequencies from 500 – 6000 Hz. The Home Version can be accessed via the internet, and combines data from a number of sources (questionnaire, uncalibrated measurement of selected AC thresholds, age, and gender) to ...
BACKGROUND Patients with unilateral atresia and microtia encounter problems in sound localization and speech understanding in noise. Although there are four implantable hearing devices available, there is little discussion and evidence on the application of these devices on patients with unilateral atresia and microtia problems. OBJECTIVE This paper will review the details of these four impla...
OBJECTIVE To analyze whether sociodemographic, occupational, and health-related data are associated with the use of hearing protection devices at work, according to gender. METHODS A cross-sectional study was conducted in 2006, using a random sample of 2,429 workers, aged between 18 and 65 years old, from residential sub-areas in Salvador, BA, Northeastern Brazil. Questionnaires were used to ...
More than 20% of U.S. paramedics are exposed to blood each year. Little is known about the circumstances that lead to these exposures. The objective of this study was to describe blood exposure events among U.S. paramedics. A mail survey was conducted in 2002-2003 among a nationally representative sample of licensed paramedics. Eighty percent of needle/lancet sticks involved non-safety devices....
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