Results 61 to 70 of about 2,201,938 (337)

A review of non-exhaust emissions on pavement area: Sources, compositions, evaluation and mitigation

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online)
Particulate matter (PM) in outdoor air pollution is one of the most critical factors that cause serious health problems and even deaths. One significant source of these particles are non-exhaust emissions, which refer to pollutants that come from sources,
Chuan He   +6 more
doaj   +1 more source

How Technological Innovation Influences Environmental Pollution: Evidence from China

open access: yesComplexity, 2022
Technological innovation has an important impact on environmental pollution. In this paper, first, we analyze the influence mechanism of technological innovation on environmental pollution and then design the index system of technological innovation ...
Duan Xin, Zhang Zhi Sheng, Sun Jiahui
doaj   +1 more source

Hybrid Propulsion in SI Engines for New Generation Motorcycles: A Numerical-Experimental Approach to Assess Power Requirements and Emission Performance

open access: yesEnergies, 2022
Worldwide mopeds and motorcycles are taking on a growing main role in private mobility with a direct impact on air pollution, particularly in urban contexts of many Asian and European countries.
Paolo Iodice   +2 more
doaj   +1 more source

Aircraft exhaust sulfur emissions

open access: yesGeophysical Research Letters, 1996
The conversion of fuel sulfur to S(VI) (SO3 + H2SO4) in supersonic and subsonic aircraft engines is estimated numerically. Model results indicate between 2% and 10% of the fuel sulfur is emitted as S(VI). It is also shown that, for a high sulfur mass loading, conversion in the turbine is kinetically limited by the level of atomic oxygen.
R. C. Brown   +5 more
openaire   +1 more source

Health effects of diesel exhaust emissions [PDF]

open access: yesEuropean Respiratory Journal, 2001
Epidemiological studies have demonstrated an association between different levels of air pollution and various health outcomes including mortality, exacerbation of asthma, chronic bronchitis, respiratory tract infections, ischaemic heart disease and stroke.
A, Sydbom   +5 more
openaire   +2 more sources

Evaluation of the micro-carburetor [PDF]

open access: yes, 1981
A prototype sonic, variable-venturi automotive carburetor was evaluated for its effects on vehicle performance, fuel economy, and exhaust emissions.
Hall, R. A., Mazor, S. D., Weiss, M. F.
core   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

Methodology for Virtual Prediction of Vehicle-Related Particle Emissions and Their Influence on Ambient PM10 in an Urban Environment

open access: yesAtmosphere, 2022
As a result of rising environmental awareness, vehicle-related emissions such as particulate matter are subject to increasing criticism. The air pollution in urban areas is especially linked to health risks.
Toni Feißel   +7 more
doaj   +1 more source

Airflow distribution control for improved turbine engine performance [PDF]

open access: yes, 1972
Control allows significant diffuser length and weight reduction, reduces combustor exhaust emissions during engine idle, and improves combustor altitude relight ...
Holdeman, J. D., Juhasz, A. J.
core   +1 more source

The PI3Kδ inhibitor roginolisib (IOA‐244) preserves T‐cell function and activity

open access: yesMolecular Oncology, EarlyView.
Identification of novel PI3K inhibitors with limited immune‐related adverse effects is highly sought after. We found that roginolisib and idelalisib inhibit chronic lymphocytic leukemia (CLL) cells and Treg suppressive functions to similar extents, but roginolisib affects cytotoxic T‐cell function and promotion of pro‐inflammatory T helper subsets to a
Elise Solli   +7 more
wiley   +1 more source

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