Download or read book Estimating Noise Levels Within Dry Diving Helmets Due to External Sources written by Paul Francis Smith and published by . This book was released on 1988 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating Noise Levels Within Dry Diving Helmets Due to External Sources written by United States. Department of the Navy. Naval Submarine Medical Research Laboratory and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1989-04 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994 with total page 1828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Hearing Conservation Standards for Hazardous Noise Associated with Diving Operations written by Paul Francis Smith and published by . This book was released on 1984 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific Basis of Noise induced Hearing Loss written by Alf Axelsson and published by . This book was released on 1996 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a General Hearing Conservation Standard for Diving Operations Research on Hearing Conservation for Exposure to Noise in Dry Hyperbaric Environments I Basic Considerations and Preliminary Experiments written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy needs to control noise exposure in hyperbaric chambers and diving helmets but the applicability of existing hearing-conservation standards to those environments is uncertain. Consequently, a program of research has been undertaken to develop suitable control measures. The specific goals of the research described in this report were to develop means of insuring accurate calibrations of microphones and earphones in hyperbaric environments, to determine the feasibility of measuring valid auditory thresholds in the NSMRL hyperbaric facility, and to obtain preliminary data bearing on the effects of noise in compressed air on the ear. Condenser microphones were calibrated in compressed air to 10 atmospheres and the results were highly similar to previous studies. Providing care is used in handling them, and calibration are preformed in suitable gas it should not be necessary to calibrate condenser micro-phones in diving environments more than once a year for routine noise measurement (sound survey) purposes. Calibration studies should be undertaken to determine the performance of ceramic microphones that are less expensive and more rugged than condenser microphones for use in compressed air environments. Several earphones were also calibrated in compressed air but the results were not consistent for most earphones and instrumentation for in situ calibration of earphones on each dive should be developed. However, careful selection of earphones and pre- and post experiment calibrations may be relied upon for experiments in compressed air. It was demonstrated that with minimal precaution, valid auditory threshold measurements can be obtained in the NSMRL hyperbaric chamber. The ear appears to be less sensitive to noise in compressed air at 3 atm than it is in air at 1 atm if sound is measured in terms of sound pressure.
Download or read book Conference Record written by and published by . This book was released on 1984 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1989 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1977 with total page 1852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise and Military Service written by Institute of Medicine and published by National Academies Press. This book was released on 2006-01-20 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Institute of Medicine carried out a study mandated by Congress and sponsored by the Department of Veterans Affairs to provide an assessment of several issues related to noise-induced hearing loss and tinnitus associated with service in the Armed Forces since World War II. The resulting book, Noise and Military Service: Implications for Hearing Loss and Tinnitus, presents findings on the presence of hazardous noise in military settings, levels of noise exposure necessary to cause hearing loss or tinnitus, risk factors for noise-induced hearing loss and tinnitus, the timing of the effects of noise exposure on hearing, and the adequacy of military hearing conservation programs and audiometric testing. The book stresses the importance of conducting hearing tests (audiograms) at the beginning and end of military service for all military personnel and recommends several steps aimed at improving the military services' prevention of and surveillance for hearing loss and tinnitus. The book also identifies research needs, emphasizing topics specifically related to military service.
Download or read book Popular Mechanics written by and published by . This book was released on 2000-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Dimension and Interior Space written by Julius Panero and published by Watson-Guptill. This book was released on 2014-01-21 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of human body measurements on a comparative basis is known as anthropometrics. Its applicability to the design process is seen in the physical fit, or interface, between the human body and the various components of interior space. Human Dimension and Interior Space is the first major anthropometrically based reference book of design standards for use by all those involved with the physical planning and detailing of interiors, including interior designers, architects, furniture designers, builders, industrial designers, and students of design. The use of anthropometric data, although no substitute for good design or sound professional judgment should be viewed as one of the many tools required in the design process. This comprehensive overview of anthropometrics consists of three parts. The first part deals with the theory and application of anthropometrics and includes a special section dealing with physically disabled and elderly people. It provides the designer with the fundamentals of anthropometrics and a basic understanding of how interior design standards are established. The second part contains easy-to-read, illustrated anthropometric tables, which provide the most current data available on human body size, organized by age and percentile groupings. Also included is data relative to the range of joint motion and body sizes of children. The third part contains hundreds of dimensioned drawings, illustrating in plan and section the proper anthropometrically based relationship between user and space. The types of spaces range from residential and commercial to recreational and institutional, and all dimensions include metric conversions. In the Epilogue, the authors challenge the interior design profession, the building industry, and the furniture manufacturer to seriously explore the problem of adjustability in design. They expose the fallacy of designing to accommodate the so-called average man, who, in fact, does not exist. Using government data, including studies prepared by Dr. Howard Stoudt, Dr. Albert Damon, and Dr. Ross McFarland, formerly of the Harvard School of Public Health, and Jean Roberts of the U.S. Public Health Service, Panero and Zelnik have devised a system of interior design reference standards, easily understood through a series of charts and situation drawings. With Human Dimension and Interior Space, these standards are now accessible to all designers of interior environments.
