Process system engineering in biodiesel production: a review [PDF]
, 2013 Biodiesel is fast becoming a popular alternative to fossil fuels, as it is natural, renewable and has low toxic emissions. Strategies that have been adopted to ensure continued growth of the biodiesel industry are policy development, reduction of ...
Kamarudin, S.K. +3 more
core +2 more sources
The influence of the nature of sound reflection from enclosures on the reverberation processes in the rooms [PDF]
MATEC Web of Conferences, 2019 The article considers the questions of assessment of reverberation processes in rooms with various character of a sound reflection from the enclosures.
Golovko Aleksander +2 more
doaj +1 more source
Horizontal Correlation of Long-Range Bottom Reverberation in Shallow Sloping Seabed
Journal of Marine Science and Engineering, 2021 The performance of active sonar detection systems is seriously affected by the reverberation at the bottom of the waveguide in shallow water. In order to improve the performance of active sonar detection, it is necessary to understand the horizontal ...
Nansong Li, Minghui Zhang, Bo Gao
doaj +1 more source
A Revised Broad-Line Region Radius and Black Hole Mass for the Narrow-Line Seyfert 1 NGC 4051 [PDF]
, 2008 We present the first results from a high sampling rate, multi-month reverberation mapping campaign undertaken primarily at MDM Observatory with supporting observations from telescopes around the world.
A. E. Watkins +81 more
core +5 more sources
Megaron, 2019 This paper seeks to assess the effect of reverberation time, distribution of reverberation time over the frequency range and signal-to-noise ratio on speech intellibility by adults and children in classrooms by the use of phonetically balanced ...
Konca Saher, Baki Karaböce
doaj +1 more source
Noise-robust blind reverberation time estimation using noise-aware time-frequency masking [PDF]
arXiv, 2021 The reverberation time is one of the most important parameters used to characterize the acoustic property of an enclosure. In real-world scenarios, it is much more convenient to estimate the reverberation time blindly from recorded speech compared to the traditional acoustic measurement techniques using professional measurement instruments.
arxiv
Frequency-dependence characterization of electromagnetic reverberation in indoor scenarios based on 1-40 GHz channel measurements [PDF]
, 2019 A novel model for the reverberation time is proposed in this letter, based on room electromagnetics theory. While the commonly used models consider absorption based on a constant rate of wall interactions within a given time, the proposed model takes the
Joseph, Wout +6 more
core +1 more source
X-Ray/UVOIR Frequency-resolved Time Lag Analysis of Mrk 335 Reveals Accretion Disk Reprocessing
The Astrophysical Journal, 2023 UV and optical continuum reverberation mapping is a powerful tool for probing the accretion disk and inner broad-line region. However, recent reverberation mapping campaigns in the X-ray, UV, and optical have found lags consistently longer than those ...
Collin Lewin +6 more
doaj +1 more source
Study and Improvement of Acoustic Conditions in Public Spaces of Shopping Malls
Acoustics, 2021 Acoustic comfort in shopping malls is one of the aspects that influence the shopping environment. Making enjoyable and comfortable retail and public spaces is demanded when designing and managing properties.
Nikolay Kanev
doaj +1 more source
Wavelet spectral timing: X-ray reverberation from a dynamic black hole corona hidden beneath ultrafast outflows [PDF]
, 2023 Spectral timing analyses based upon wavelet transforms provide a new means to study the variability of the X-ray emission from accreting systems, including AGN, stellar mass black holes and neutron stars, and can be used to trace the time variability of X-ray reverberation from the inner accretion disc.
arxiv +1 more source