Results 11 to 20 of about 489,788 (350)

Investigations on Low Frequency Noises of On-Shore Wind Turbines

open access: yesAcoustics, 2020
The expansion of renewable energy usage is one of the major social tasks in Europe and therefore requires acceptance and support from the population.
Esther Blumendeller   +4 more
doaj   +1 more source

Characterization of Wind Resources of the East Coast of Maranhão, Brazil

open access: yesEnergies, 2023
The objective of this work is to assess the wind resources of the east coast of Maranhão, Brazil. Wind profilers were combined with micrometeorological towers and atmospheric reanalysis to investigate micro- and mesoscale aspects of wind variability ...
Felipe M. Pimenta   +11 more
doaj   +1 more source

One year of 222Rn concentration at a typical rural site in South India

open access: yesRadiation Protection and Environment, 2021
The simultaneous measurements of atmospheric radon, ambient gamma radiations dose, and relevant meteorological parameters were carried out at the National Atmospheric Research Laboratory (NARL), Gadanki, India (13.459° N, 79.175° E) during June 2013–May ...
K Charan Kumar, Nagaraja Kamsali
doaj   +1 more source

Stability of α′′-Fe16N2 in hydrogenous atmospheres [PDF]

open access: yesChemical Communications, 2014
We revealed the inherent instability of α''-Fe16N2 in hydrogenous atmospheres due to the denitrification toward α-Fe by forming NH3 at the particle surface. Coating the particle surface with SiO2 to suppress the formation of NH3 has proven to be a simple yet powerful method to enhance the stability of α''-Fe16N2 in hydrogenous atmospheres.
Yamamoto, Shinpei   +9 more
openaire   +2 more sources

Characterization of Turbulence in the Neutral and Stable Surface Layer at Jang Bogo Station, Antarctica

open access: yesAtmosphere, 2021
The availability of 5-year time series of velocity and temperature data from two sonic anemometers installed at Jang Bogo Station, Antarctica, allowed a systematic investigation of the turbulence features in a stable layer affected by submeso motions and
Mauro Mazzola   +3 more
doaj   +1 more source

Assessing Peak-To-Mean Ratios of Odour Intensity in the Atmosphere near Swine Operations

open access: yesAtmosphere, 2020
Odour in the atmosphere is usually characterized by an intermittent time series of high peaks and periods of low (or zero) concentrations. The peak-to-mean ratio (PMR) is commonly used to estimate short-term peaks from long-term averages to assess the ...
Qiang Zhang, Xiaojing Zhou
doaj   +1 more source

Evaluation of Marine Wind Profiles in the North Sea and Norwegian Sea Based on Measurements and Satellite-Derived Wind Products

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2022
The wind conditions at oil platforms are typically measured at 40–140-m height, and then reduced to standard 10-m height before being distributed via the Global Telecommunication System.
Anne-Mette Olsen   +4 more
doaj   +1 more source

Evaluating the stability of atmospheric lines with HARPS [PDF]

open access: yes, 2010
Context: In the search for extrasolar systems by radial velocity technique, a precise wavelength calibration is necessary for high-precision measurements.
Bouchy   +20 more
core   +1 more source

A physical wind‐turbine wake growth model under different stratified atmospheric conditions

open access: yesWind Energy, 2022
The wind‐turbine wake growth is crucial for wake assessment. At present, it can only be determined empirically, which is the primary source of prediction errors in the analytical wake model, and a physically‐based method is urgently needed. Recently, the
Bowen Du, Mingwei Ge, Yongqian Liu
doaj   +1 more source

Improvement of Airflow Simulation by Refining the Inflow Wind Direction and Applying Atmospheric Stability for Onshore and Offshore Wind Farms Affected by Topography

open access: yesEnergies, 2022
For this study, the annual frequency of atmospheric stability and the effects of topography were investigated, using ERA5 data and data from wind observation masts installed at four locations on an island for a site under development, where bidding will ...
Susumu Takakuwa, Takanori Uchida
doaj   +1 more source

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