Results 1 to 10 of about 1,014,437 (288)

Characterization of urinary cotinine concentrations among non-smoking adults in smoking and smoke-free homes in the Korean national environmental health survey (KoNEHS) cycle 3 (2015–2017)

open access: yesBMC Public Health, 2021
Background Although many indoor public places have implemented smoke-free regulations, private homes have remained sources of tobacco smoke pollutants.
Jeonghoon Kim   +5 more
doaj   +1 more source

The pro-inflammatory effects of combined exposure to diesel exhaust particles and mineral particles in human bronchial epithelial cells

open access: yesParticle and Fibre Toxicology, 2022
Background People are exposed to ambient particulate matter (PM) from multiple sources simultaneously in both environmental and occupational settings.
Vegard Sæter Grytting   +4 more
doaj   +1 more source

A New Design Method of Shield Tunnel Based on the Concept of Minimum Bending Moment

open access: yesApplied Sciences, 2022
As the soil-resistance coefficient in a soft soil area is small, overlarge bending moment may cause exceeding transverse deformation for the shield tunnel and cause structural diseases and waterproof failure at the longitudinal segment joints.
Dawei Huang   +5 more
doaj   +1 more source

Study on Dynamic Characteristics of the Bistable Nonlinear Damper

open access: yesApplied Sciences, 2023
A conventional dynamic vibration absorber based on resonance effect can hardly satisfy the requirement for low-frequency and broadband vibration control in actual engineering.
Yunan Liu   +4 more
doaj   +1 more source

Potential role of polycyclic aromatic hydrocarbons in air pollution-induced non-malignant respiratory diseases

open access: yesRespiratory Research, 2020
Epidemiological studies have found strong associations between air pollution and respiratory effects including development and/or exacerbation of asthma and chronic obstructive pulmonary disease (COPD) as well as increased occurrence of respiratory ...
Marit Låg   +3 more
doaj   +1 more source

Comparison of Indoor Radon Reduction Effects Based on Apartment Housing Ventilation Methods

open access: yesAtmosphere, 2022
A lack of ventilation in multi-unit dwellings can affect human health adversely owing to accumulated radon gases; therefore, developing immediate and effective methods to reduce radon gas in indoor living environments is urgently needed.
Jiwon Choi   +7 more
doaj   +1 more source

Algorithm for an Effective Ratio of the Transverse Bending Rigidity Based on the Segment Joint Bending Stiffness

open access: yesApplied Sciences, 2022
An algorithm for calculating the effective ratio of the transverse bending rigidity is established based on the segment longitudinal joint bending stiffness.
Dawei Huang   +5 more
doaj   +1 more source

Role of different mechanisms in pro-inflammatory responses triggered by traffic-derived particulate matter in human bronchiolar epithelial cells

open access: yesParticle and Fibre Toxicology, 2023
Background Traffic-derived particles are important contributors to the adverse health effects of ambient particulate matter (PM). In Nordic countries, mineral particles from road pavement and diesel exhaust particles (DEP) are important constituents of ...
Magne Refsnes   +7 more
doaj   +1 more source

Noise expresses exponential growth under regime switching [PDF]

open access: yes, 2009
Consider a given system under regime switching whose solution grows at most polynomially, and suppose that the system is subject to environmental noise in some regimes. Can the regime switching and the environmental noise work together to make the system
Appleby   +21 more
core   +1 more source

Respirable stone particles differ in their ability to induce cytotoxicity and pro-inflammatory responses in cell models of the human airways

open access: yesParticle and Fibre Toxicology, 2021
Background Respirable stone- and mineral particles may be a major constituent in occupational and ambient air pollution and represent a possible health hazard.
Vegard Sæter Grytting   +9 more
doaj   +1 more source

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