Results 221 to 230 of about 3,544,653 (296)

Enabling state-of-the-art sensitivity of patch-antenna-coupled TeraFETs for the >1-THz frequency band using superstrate lenses

Holstein J, But DB, Krysl A, Lisauskas A, Roskos HG.   +4 more
europepmc   +1 more source

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Quantitative health impact assessment of construction noise exposure on the nearby region for noise barrier optimization

Building and Environment, 2020
As construction noise has become one of the most harmful pollutants for nearby residents, it is essential to quantify the health impacts of noise exposure to reduce them and reduce the number of resident disputes.
Taehoon Hong, Seunghoon Jung, Dong-Eun Lee   +2 more
exaly   +2 more sources

An innovative design and development of noise barrier with newly composite mix of acoustic panel

Journal of Environmental Management
Urban dynamics and anthropogenic interventions led to an increase in noise pollution levels, with relevant implications for worldwide healthcare. Structures created to lessen noise pollution from traffic, industry, or other sources are known as noise ...
Komal Kalawapudi, Vijaya Laxmi
exaly   +2 more sources

Moving model experiments on transient pressure induced by a high-speed train passing through noise barrier

Journal of Wind Engineering and Industrial Aerodynamics, 2020
The pressure variations on train surfaces and noise barriers induced by a model train passing barriers of 0.125 and 0.25 ​m are studied using a 1/20 moving model.

exaly   +2 more sources

Investigation of the effects of sample size on sound absorption performance of noise barrier

Applied Acoustics, 2020
A series of tests were performed on a commercial noise barrier in reverberation room in order to obtain the sound absorption performance and to study the effect of sample size on the noise barrier.
Heow Pueh Lee, Hsiao Mun Lee, Zhaomeng Wang   +2 more
exaly   +2 more sources

A renewable low-frequency acoustic energy harvesting noise barrier for high-speed railways using a Helmholtz resonator and a PVDF film

Applied Energy, 2018
High-speed railways have received much attention globally in recent years. While high-speed railways bring convenience to people, the environmental costs, such as noise pollution, are assignable, especially in residential areas near the railway. Notably,
Yanping Yuan, Lingfei Qi, Tingsheng Zhang   +2 more
exaly   +2 more sources

Acoustic performance of a semi-closed noise barrier installed on a high-speed railway bridge: Measurement and analysis considering actual service conditions

Measurement: Journal of the International Measurement Confederation, 2019
Noise barriers are regarded as the most efficient way to mitigate high-speed railway (HSR) noise. To enhance their performance, the present paper introduces a novel type of noise barrier, namely a semi-closed noise barrier (SCNB).
Xiao-Zhen Li, Xun Zhang
exaly   +2 more sources

Full-scale experiment of transient aerodynamic pressures acting on a bridge noise barrier induced by the passage of high-speed trains operating at 380–420 ​km/h

Journal of Wind Engineering and Industrial Aerodynamics, 2020
Transient aerodynamic pressures induced by the passage of high-speed trains past noise barriers can result in noise barrier damage. This issue is investigated experimentally in the present study by applying pressure sensors to measure the transient ...
Xiaohui Xiong, Kaiwen Wang, Tanghong Liu   +2 more
exaly   +2 more sources

Statistical energy method for noise reduction performance of the vertical noise barrier alongside railway bridges

Applied Acoustics, 2020
With the aim of studying the noise reduction performance of the vertical noise barrier on railway bridges, this paper introduces the statistical energy analysis (SEA) to predict their insertion losses.
Xiao-Zhen Li
exaly   +2 more sources