Results 251 to 260 of about 175,424 (290)

Environmental Effects of Ultraviolet (UV) Filters

2021
Organic and inorganic ultraviolet (UV) filters are used in topical sunscreens and other applications to prevent or limit damage following exposure to UV light. Increasing use of UV filters has contributed to a growing number of investigations examining potential effects on human health and the environment.
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Should Environmental Filtering be Abandoned?

Trends in Ecology & Evolution, 2017
Environmental filtering, where the environment selects against certain species, is thought to be a major mechanism structuring communities. However, recent criticisms cast doubt on our ability to accurately infer filtering because competition can give rise to patterns identical to those caused by environmental filtering.
Cadotte, Marc W., Tucker, Caroline M.
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Embracing the Nonindependence of the Environmental Filter: A Reply to Responses

Trends in Ecology & Evolution, 2017
Unquestionably, the environment shapes the diversity and composition of ecological communities. Understanding environmental impacts on organisms has long occupied ecologists, however recent papers have argued that the traditional concept of an environmental filter that acts independent from biotic processes is difficult to quantify [1], and perhaps not
Marc W, Cadotte, Caroline M, Tucker
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Environmentally corrected matched filter

Journal of the Acoustical Society of America, 2015
Matched filtering is commonly used to process broadband active acoustic echoes providing higher levels of range resolution and reverberation noise suppression than can be realized through narrowband processing. Since theoretical processing gains are proportional to the signal bandwidth, it is typically desirable to utilize the widest band signals ...
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Environmental effects on all-dielectric bandpass filters

Applied Optics, 1986
The spectral characteristics of all-dielectric bandpass filters were measured while the surrounding air temperature and relative humidity were closely controlled. Center wavelength was found to be nonlinear with humidity and can be described by an empirical two-parameter model.
A, Brunsting, M A, Kheiri, D F, Simonaitis, A J, Dosmann   +3 more
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Light as an environmental filter in fen vegetation

Journal of Vegetation Science, 2004
Abstract:Questions: 1. To what extent does light availability differ among fen plant communities? 2. To what extent does light coincide with productivity and moisture gradients? 3. Does light act as an important environmental filter in natural and transformed riparian landscapes?Location: Current data from the Biebrza Valley, NE Poland; literature ...
Kotowski, W, van Diggelen, Rudy
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Single and Ensemble Based Filters in Environmental Data

Expert Systems
ABSTRACTResearchers rely on species distribution models (SDMs) to establish a correlation between species occurrence records and environmental data. These models offer insights into the ecological and evolutionary aspects of the subject. Feature selection (FS) aims to choose useful interlinked features or remove unnecessary and redundant ones and make ...
Yousra Cherif, Ali Idri
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Peat filter performance under changing environmental conditions

Journal of Hazardous Materials, 2009
Peat is a candidate filter material for in situ treatment of urban runoff, contaminated groundwater and landfill leachates. Until now research has focused on peat sorption in batch experiments and there is a lack of knowledge on peat performance in filter beds. In this project column tests were carried out to evaluate the capacity of peat to remove As,
Kalmykova, Y., Strömvall, A., Rauch, S., Morrison, Greg   +3 more
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Local Filtering of Environmental Noise

2002
Cleveland, Ohio ...
BUCCI, OVIDIO MARIO, CAPOZZOLI, AMEDEO, C. CURCIO, D'ELIA, GIUSEPPE   +3 more
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Application of matched filtering for environmental compensation

The Journal of the Acoustical Society of America, 2000
The problem of improving the performance of broadband sonar through the use of modeling is posed. An approach to this problem is presented in terms of matched filtering. Specific filtering equations are derived from a coherent sonar equation as a signal model and a broadband sound propagation model.
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