Results 31 to 40 of about 484,955 (341)
Road traffic pollution monitoring and modelling tools and the UK national air quality strategy. [PDF]
, 2001 This paper provides an assessment of the tools required to fulfil the air quality management role now expected of local authorities within the UK. The use of a range of pollution monitoring tools in assessing air quality is discussed and illustrated with
Bell, M.C., Marsden, G.R.
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IMA Journal of Numerical Analysis, 2004 We discuss the problems arising when computing eigenvalues of self-adjoint operators which lie in a gap between two parts of the essential spectrum. Spectral pollution, i.e. the apparent existence of eigenvalues in numerical computations, when no such eigenvalues actually exist, is commonplace in problems arising in applied mathematics.
Davies, E B, Plum, M
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Journal of Freshwater Ecology, 2023 Freshwater lakes are subjected to increasing eutrophication and algal blooms worldwide, which have dramatically impacted the aquatic biodiversity. This situation is especially true in the Yangtze River Floodplain, China. However, few researches have been
Lei Ji +11 more
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Science, 1971 In the editorial, "Marine pollution" (8 January 1971, page 21), the value given for the concentration of mercury found in tuna (paragraph 2, line 10, 0.5 x 10-6 part per billion) is incorrect. The correct value is 500 parts per billion.
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npj Clean Water, 2022 Thin-film composite forward osmosis (TFC-FO) membranes show the potential to be applied in water treatment applications. However, the TFC-FO membrane performance was limited by internal concentration polarization (ICP) and membrane fouling. In this study,
Xing Wu +4 more
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Laser-excited fluorescence for measuring atmospheric pollution [PDF]
, 1975 System measures amount of given pollutant at specific location. Infrared laser aimed at location has wavelength that will cause molecules of pollutant to fluoresce.
Menzies, R. T.
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SSRN Electronic Journal, 2015 This paper estimates the causal impact of party affiliation (Republican or Democrat) of U.S. governors on pollution. Using a regression discontinuity design, gubernatorial election data, and air quality data from U.S. Environmental Protection Agency (EPA), we find that pollution is lower under Democratic governors.
Louis-Philippe Beland, Vincent Boucher
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Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics
FEBS Open Bio, EarlyView.Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini +2 more
wiley +1 more source
Scientific Reports, 2017 The limited information about the sludge quality has made its management a top environmental challenge. In the present study, occurrence and the spatiotemporal variations of 52 inorganic elements were investigated in the sludge samples from three ...
Fidèle Suanon +6 more
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Monitoring atmospheric pollutants with a heterodyne radiometer transmitter-receiver [PDF]
, 1973 The presence of selected atmospheric pollutants can be determined by transmitting an infrared beam of proper wavelength through the atmosphere, and detecting the reflections of the transmitted beam with a heterodyne radiometer transmitter-receiver using ...
Menzies, R. T.
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