Results 61 to 70 of about 8,321 (168)

The role of composition in the spectral evolution of carbonaceous asteroids as informed by Bennu sample return

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Near‐Earth rubble‐pile asteroids Bennu and Ryugu are part of the carbonaceous taxonomic complex (C‐complex), and samples returned from both bodies resemble the most aqueously altered carbonaceous chondrites. However, telescopic and spacecraft visible–near infrared (VIS–NIR) reflectance spectra of Ryugu exhibit a red (positive) spectral slope ...
Ralph E. Milliken   +10 more
wiley   +1 more source

Upstream-radiated rotor–stator interaction noise in mean swirling flow [PDF]

open access: yes, 2005
A major component of the noise in modern aeroengines is rotor–stator interaction noise generated when the wake from the rotating fan impinges on a stator row downstream.
Cooper, A. J., Peake, N.
core   +1 more source

Blind Source Separation of Single-Channel Ship Radiated Noise Based on VMD-FastICA

open access: yes水下无人系统学报
To address the challenge of separating different target ship radiated noise signals from mixed signals under extreme conditions where only a single-channel signal is available, a blind source separation algorithm under single-channel conditions was ...
Yuwei LI, Huiyuan WANG
doaj   +1 more source

Multi-parameter Tikhonov regularization-based OTPA with application to ship-radiated noise evaluation

open access: yesAIP Advances, 2021
The purpose of this study is to reduce the errors caused by the inversion of the transfer function (TF) matrix when evaluating ship-radiated noise by operational transfer path analysis. The singular value decomposition (SVD), generalized cross validation
Ruibiao Li, Wenjun Bu
doaj   +1 more source

Hydrogen to Power: Exploring Current Developments and Future Challenges

open access: yesNatural Sciences, Volume 6, Issue 3, July 2026.
As the interest in low‐carbon energy systems grows, hydrogen continues to attract attention as a flexible energy carrier for power applications. Developments in hydrogen production, storage, transport, and utilization are explored. In addition, the deployment challenges of hydrogen energy vector related to economics, infrastructure, safety, and ...
Md. Shafiullah   +6 more
wiley   +1 more source

Machine learning inspired ship-radiated noise modelling and cancellation for underwater acoustic communication systems

open access: yes, 2020
Achieving high data rate and reliable communication in shallow and harbour underwater acoustic (UA) environments can be a demanding task in the presence of ship-radiated noise.
Atanackovic, Lazar
core  

Turbulent boundary layer noise : direct radiation at Mach number 0.5 [PDF]

open access: yes, 2013
Boundary layers constitute a fundamental source of aerodynamic noise. A turbulent boundary layer over a plane wall can provide an indirect contribution to the noise by exciting the structure, and a direct noise contribution.
GLOERFELT, Xavier, BERLAND, Julien
core   +1 more source

Influence of Observational Temperature Data Sets on ECS and TCR Estimates

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Uncertainties in estimates of Equilibrium Climate Sensitivity (ECS) and Transient Climate Response (TCR) are influenced by observational temperature data sets. Variability exists not just among the data products, but also within the creation of each one.
Vikrant Sapkota   +3 more
wiley   +1 more source

Emergence of Subsurface Warming in the Southern Ocean Gateway Between New Zealand and Antarctica

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract We analyze temperature variability in the surface and intermediate layers of the Southern Ocean from 1994 to 2025 using a 30‐year summertime record of Expendable Bathythermograph (XBT) measurements collected along the PX36 line across the New Zealand–Antarctica chokepoint of the Antarctic Circumpolar Current (ACC).
A. I. Ferola   +7 more
wiley   +1 more source

Substantial Diel Changes of Cloud Adjustments to Aerosols in Ship‐Tracks

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Clouds adjust their albedo, amount and liquid water path to anthropogenic aerosols, and produce a climate forcing. Such cloud adjustments are complex functions of both environmental conditions and interaction time. However, direct observations of temporal changes in cloud adjustments are limited. Here, we develop a method to show observational
Tianle Yuan   +6 more
wiley   +1 more source

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