Results 21 to 30 of about 1,615,131 (338)

Comparison of the Potential Ecological and Human Health Risks of Heavy Metals from Sewage Sludge and Livestock Manure for Agricultural Use

Toxics, 2021
Sewage sludge and livestock (chicken, swine and cattle) manure samples were collected from the Yanmenguan Cattle Herbivorous Livestock Area to compare the potential ecological and human health risks caused by heavy metals contained in them. In this study,
Baoling Duan, Qiang Feng
doaj   +1 more source

A Human-Relevant 3D In Vitro Platform for an Effective and Rapid Simulation of Workplace Exposure to Nanoparticles: Silica Nanoparticles as Case Study

Nanomaterials, 2020
In this contribution, we show the suitability of a 3D airway model, when coupled with a nebulizer system, for simulating workplace exposure to nanoparticles. As a proof of concept, workplace exposure to silica nanoparticles was experimentally measured in
Luisana Di Cristo, Fabio Boccuni, Sergio Iavicoli, Stefania Sabella   +3 more
doaj   +1 more source

A Low Upper Limit to the Lyman Continuum Emission of two galaxies at z 3 [PDF]

, 2002
Long exposure, long-slit spectra have been obtained in the UV/optical bands for two galaxies at z=2.96 and z=3.32 to investigate the fraction of ionizing UV photons escaping from high redshifts galaxies.
A. Fontana, Babul A., E. Giallongo, Giallongo E., S. Cristiani, S. D’Odorico, Seaton M. J.   +6 more
core   +2 more sources

Evaluation of Noise Levels in a University Dental Clinic

Applied Sciences, 2023
Noise levels in a dental office can be produced by different specialty instruments. Exposure to high levels of noise (unwanted sounds) may cause auditory and non-auditory health problems in dentists.
Maria Antoniadou, Panagiota Tziovara, Sophia Konstantopoulou   +2 more
doaj   +1 more source

X-ray Flares of EV Lac: Statistics, Spectra, Diagnostics [PDF]

, 2010
We study the spectral and temporal behavior of X-ray flares from the active M-dwarf EV Lac in 200 ks of exposure with the Chandra/HETGS. We derive flare parameters by fitting an empirical function which characterizes the amplitude, shape, and scale.
Aschwanden, David P. Huenemoerder, Drake, Fabio Reale, Favata, Favata, Favata, Houck, Houck, Jakimiec, Jeremy J. Drake, Johns-Krull, Klimchuk, Laming, López-Santiago, Maggio, Mitschang, Norbert S. Schulz, Osten, Osten, Osten, Paola Testa, Phan-Bao, Rachel A. Osten, Reale, Reale, Rowan, Sciortino, Serio, Sylwester, Testa, Testa, Testa   +32 more
core   +2 more sources

Assessment of the impulse noise attenuation by earplugs in metalworking processes

Medycyna Pracy, 2014
Background: The aim of the study was to answer the question of whether earplugs provide sufficient protection in the exposure to impulse noise generated during metalworking processes.
Rafał Młyński, Emil Kozłowski
doaj   +1 more source

Peak limitation: Limitation of exposure peaks and short-term exposures [MAK Value Documentation, 2011]

, 2017
The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area sets maximum concentrations for chemicals in the work place air (MAK value). The MAK value is defined as a time‐weighted average concentration for 8 hours per day and assuming on average a 40‐hour work week.
Hartwig, A, MAK Commission, et al, Arand, Michael   +3 more
openaire   +4 more sources

Binding occupational exposure limits for carcinogens in the EU – necessary but not sufficient to reduce risk

Scandinavian Journal of Work, Environment & Health, 2019
Johanson & Tinnerberg (1) discuss the role of binding occupational exposure limit values (BOELV) in the European Union and whether these are “good” or “bad”.
John W Cherrie
doaj   +1 more source

Binding occupational exposure limits for carcinogens in the EU – good or bad?

Scandinavian Journal of Work, Environment & Health, 2019
The European Union (EU) has increased its efforts to counteract cancer due to occupational exposure. This is done by several means, including more active use and revision of the Carcinogen Directive (1), launch of the Roadmap on Carcinogens (2) and the ...
Gunnar Johanson, Håkan Tinnerberg
doaj   +1 more source

Exposure to inhalable dust, endotoxin and formaldehyde in factories processing particleboards from eucalyptus trees in Ethiopia

Environmental and Occupational Health Practice, 2020
Objectives: Eucalyptus trees are used in the particleboard wood industry in Ethiopia. Dust and chemicals from this production may cause respiratory health problems, but the exposure levels have not been studied previously.
Akeza Awealom Asgedom, Magne Bråtveit, Vivi Schlünssen, Bente Elisabeth Moen   +3 more
doaj   +1 more source