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Resource Documents: Portugal (14 items)
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Low Frequency Noise: A Major Risk Factor in Military Operations
Author: Castelo Branco, Nuno
Paper presented at the NATO Research and Technology Organisation’s Applied Vehicle Technology Symposium on “Ageing Mechanisms and Control: Part A – Developments in Computational Aero- and Hydro-Acoustics”, held in Manchester, U.K., 8-11 October 2001, and published in RTO-MP-079(I). Background. Noise is a major factor in many military environments. Usually the concern is with the higher frequency bands (>500 Hz) that cause hearing damage or interfere with speech. Protection against noise is thus focused on these higher frequencies, while the bands . . .
More »Alberta, Arizona, Australia, California, Connecticut, Delaware, Denmark, Germany, Grid, Idaho, Illinois, Indiana, Iowa, Ireland, Italy, Kansas, Latvia, Lithuania, Maine, Manitoba, Massachusetts, Michigan, Minnesota, Nebraska, Netherlands, New Hampshire, New Mexico, North Dakota, Oklahoma, Ontario, Oregon, Poland, Portugal, Rhode Island, South Dakota, Spain, U.K., Washington •
Real-time wind production — various regions
Author: National Wind Watch
World: Current electricity production and consumption of “low-carbon” and “renewable” electricity – click an area for details Europe: Quarter-hour load, generation, exchange – click on sample graph for other countries Europe: Hourly and daily generation, capacity factors Nordpool: Current production by source type in the Nordic power system (Norway, Sweden, Finland, Estonia, Latvia, Lithuania, Denmark) Nordpool: Current power flow in the Nordic power system West Denmark: Electricity prices, consumption, and production today, every 5 minutes France: Quarter-hour consumption and production . . .
More »In-Home Wind Turbine Noise Is Conducive to Vibroacoustic Disease
Author: Alves-Pereira, Mariana; and Castelo Branco, Nuno
Abstract of paper to be presented at the Wind Turbine Noise Conference 2007, Lyon, France, September 20-21, 2007: Introduction. This team has been systematically studying the effects of infrasound and low frequency noise (ILFN, <500 Hz) in both human and animal models since 1980. Recently, yet another source of ILFN has appeared: wind turbines (WT). Like many other ILFN-generating devices, WT can greatly benefit humankind if, and only if, responsible and intelligent measures are taken for their implementation. Vibroacoustic disease . . .
More »Low frequency noise legislation
Author: Alves-Pereira, Mariana; Motylewski, Jersy; Kotlicka, Elzbieta; and Castelo Branco, Nuno
Paper accepted for Inter-noise 2007, 28-31 August, Istanbul, Turkey Abstract: Legislation regarding low frequency noise (LFN, <500 Hz including infrasound), when existent, is highly deficient. Not only is it expressed in dBA, actually defeating the purpose of evaluating LFN, but no concrete measures are prescribed if excessive LFN is identified. The status quo notion that acoustical phenomena are only harmful when perceived by humans cannot be sustained given current scientific facts. The purpose of this report is to demonstrate just . . .
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