Results 261 to 270 of about 755,676 (315)
Some of the next articles are maybe not open access.
Noise levels in dental practice
The Journal of the Acoustical Society of America, 1999Noise can cause unwanted masking of sounds, interference with speech, even pain and injury, and temporary or permanent loss of hearing. Concerning exposure of noise levels at the workplace, industrial plants and huge machines are usually considered. However, there are ‘‘clean’’ jobs where people are exposed to significant noise. One example, which will
Ivančević, Bojan +2 more
openaire +2 more sources
The Noise Level in Magnetic Stimulation
Scandinavian Audiology, 1996The noise generated by stimulating coils may jeopardize the hearing of the patients as well as the hearing of the examiner. To evaluate the potential risk caused by the impulse noise of stimulating coils, we examined the A-weighted peak sound pressure levels from five different types of magnetic stimulator coils.
J, Starck +3 more
openaire +2 more sources
Fish Hatchery Noise Levels and Noise Reduction Techniques
Journal of Agricultural Safety and Health, 2015This study examined occupational noise within two rearing facilities at a production fish hatchery and evaluated two simple noise reduction techniques. Ambient noise levels in the hatchery tank room ranged from 50 dB in the absence of flowing water to over 73 dB when water was flowing to all 35 tanks under typical hatchery operating procedures ...
M E, Barnes, C R, Hewitt, T M, Parker
openaire +2 more sources
A noise pollution level instrument
Review of Scientific Instruments, 1973Noise pollution level is an index of the annoyance and objectionability of noise which has recently been drawing increasing interest. It is based on two quantities, one relating to the equivalent continuous energy level and the other relating to the variations in level.
openaire +2 more sources
Safe Level for Noise Exposure?
Annals of Otology, Rhinology & Laryngology, 1976The safety of long, continuous exposure to several different levels of noise was determined. Chinchillas were exposed for two or nine days to an octave band of noise with a center frequency of .5 kHz or 4 kHz. By examining the inner ear for evidence of acute cellular degeneration, exposures which produced minimal permanent damage could be identified ...
openaire +2 more sources
Reducing Noise Levels in the NICU
Neonatal Network, 2013In a neonatal intensive care unit (NICU), babies are subjected to various noises. Despite best intentions, staff and visitors alike contribute to a significant amount of “noise pollution” in the unit. One father came up with a solution that is now implemented nationwide and is making a huge difference to the nerves and the brain development of our most
openaire +2 more sources
Noise Control on the Local Level
Archives of Environmental Health: An International Journal, 1970How will man adjust to his increasingly raucous environment? In an article entitled "Urban Noise Control" appearing in a recent issue of the Columbia Journal of Law and Social Problems, the following quotations appear: "Excessive noise upsets psychic balance, impairs hearing capacity and diminishes the aesthetic quality of contemporary urban life ...
openaire +2 more sources
Noise Levels in Physiciansʼ Offices
Ear and Hearing, 1990The development of hand-held auditory screening devices has led to increased hearing screening by physicians. Ambient noise levels were assessed in examination rooms of 20 physician offices. Measurements provided Ln, Leq, Lmax, and octave band data for specialty types: pediatrics, internal medicine, family practice and otolaryngology.
openaire +2 more sources
Noise limits and noise levels along motorways in Europe
The Journal of the Acoustical Society of America, 2008Environmental noise caused by traffic is one of the main local environmental problems in Europe. The National Road Authorities (NRA's), combined in the Conference of European Directors of Roads (CEDR), are aware of the environmental noise problem along their motorways.
openaire +1 more source
2012
In this paper we present a new fully automatic algorithm for blind noise level evaluation based on natural image statistics (NIS). Natural images are unprocessed reproductions of a natural scene observed by a human. During its evolution, the Human Visual System has been adjusted to the information encoded in natural images, making images interpreted ...
openaire +1 more source
In this paper we present a new fully automatic algorithm for blind noise level evaluation based on natural image statistics (NIS). Natural images are unprocessed reproductions of a natural scene observed by a human. During its evolution, the Human Visual System has been adjusted to the information encoded in natural images, making images interpreted ...
openaire +1 more source