Results 11 to 20 of about 1,190,792 (288)

Investigation of the Uniformity of Gel Shrinkage by Imaging Tracer Particles Using X‐Ray Microtomography

open access: yesAdvanced Engineering Materials, EarlyView., 2023
A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal   +3 more
wiley   +1 more source

Air Pollution Hotspot Detection and Source Feature Analysis using Cross-domain Urban Data [PDF]

open access: yesACM SIGSPATIAL 2021, 2022
Air pollution is a major global environmental health threat, in particular for people who live or work near pollution sources. Areas adjacent to pollution sources often have high ambient pollution concentrations, and those areas are commonly referred to as air pollution hotspots.
arxiv   +1 more source

Light pollution and the concentration of anthropogenic photons in the terrestrial atmosphere [PDF]

open access: yesAtmospheric Pollution Research, 2022, 13(9):101541, 2022
Light pollution can be rigorously described in terms of the volume concentration of anthropogenic photons (light quanta) in the terrestrial atmosphere. This formulation, consistent with the basic physics of the emission, scattering and absorption of light, allows one to express light pollution levels in terms of particle volume concentrations, in a ...
arxiv   +1 more source

Novel Regression and Least Square Support Vector Machine Learning Technique for Air Pollution Forecasting [PDF]

open access: yes, 2023
Air pollution is the origination of particulate matter, chemicals, or biological substances that brings pain to either humans or other living creatures or instigates discomfort to the natural habitat and the airspace. Hence, air pollution remains one of the paramount environmental issues as far as metropolitan cities are concerned.
arxiv   +1 more source

Environmental regulation and competitiveness: Evidence from Romania [PDF]

open access: yes, 2010
According to the pollution haven hypotheses differences in environmental regulation affect trade flows and plant location. Specifically, environmental stringency should decrease exports and increase imports of “dirty” goods.
Caporale, GM, Rault, C, Sova, A, Sova, R
core   +2 more sources

Measuring the health effects of air pollution : to what extent can we really say people are dying from bad air? [PDF]

open access: yes, 2004
Estimation of the effects of environmental impacts is a major focus of current theoretical and policy research in environmental economics. Such estimates are used to set regulatory standards for pollution exposure; design appropriate environmental ...
Alberini   +36 more
core   +1 more source

Syntrophic Growth of Geobacter sulfurreducens Accelerates Anaerobic Denitrification

open access: yesFrontiers in Microbiology, 2018
Nitrate is considered as a contamination since it’s over discharging to water incurs environmental problems. However, nitrate is an ideal electron sink for anaerobic pollutant degraders desiring electron acceptors due to the high redox potential ...
Yuxuan Wan   +6 more
doaj   +1 more source

Bioavailability Assessment of Heavy Metals and Organic Pollutants in Water and Soil Using DGT: A Review

open access: yesApplied Sciences, 2023
In recent years, the diffusive gradients in the thin films (DGT) technique has also been increasingly applied to assess the bioavailability of heavy metals and organic pollutants in the soil.
Qing Zhu   +4 more
doaj   +1 more source

Pollution State Modeling for Mexico City [PDF]

open access: yesJ. R. Stat. Soc. A., 182(3), 1039-1060 (2019), 2018
Ground-level ozone and particulate matter pollutants are associated with a variety of health issues and increased mortality. For this reason, Mexican environmental agencies regulate pollutant levels. In addition, Mexico City defines pollution emergencies using thresholds that rely on regional maxima for ozone and particulate matter with diameter less ...
arxiv   +1 more source

Light pollution in USA and Europe: The good, the bad and the ugly [PDF]

open access: yesJournal of Environmental Management Volume 248, 15 October 2019, 109227, 2020
Light pollution is a worldwide problem that has a range of adverse effects on human health and natural ecosystems. Using data from the New World Atlas of Artificial Night Sky Brightness, VIIRS-recorded radiance and Gross Domestic Product (GDP) data, we compared light pollution levels, and the light flux to the population size and GDP at the State and ...
arxiv   +1 more source

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