Results 101 to 110 of about 1,176,775 (247)

Engineering Carbon Nanotube Quantum Well Defects With Recognition Tripeptides for Optical Detection of Extracellular Vesicles in Plasma

Small, EarlyView.
A three‐residue peptide bioconjugated onto a carbon nanotube quantum defect turns the near‐infrared emission of quantum defects into a reporter of integrins on intact extracellular vesicles, directly in human plasma. The sensor reveals that healthy fibroblast vesicles carry as much RGD‐binding integrin as cancer‐derived ones, an adhesion‐associated ...
In‐Jun Hwang, Junhee Kim, Aarti Patel, Leilei Zhang, Jacob Miller, Stanislav Piletsky, Cassandra L. Clift, Colin Hisey, YongJoo Kim, Mijin Kim   +9 more
wiley   +1 more source

Broadband Noise Reduction of a Two-Stage Fan with Wavy Trailing-Edge Blades

Aerospace
In this paper, a numerical investigation is performed to study the broadband noise of a fan stage with wavy trailing-edge blades. A study of the wavelength and ratio of amplitude to wavelength (H/L) is conducted to better understand the noise reduction ...
Ruibiao Gao, Weijie Chen, Hang Tong, Jianxin Lian, Weiyang Qiao   +4 more
doaj   +1 more source

Bursting Oscillation Characteristics and Improved AHODFC for DFIG and PMSG Combined Wind Farm

Energy Internet, EarlyView.
ABSTRACT Bursting oscillations occur in DFIG and PMSG combined wind farm under external disturbances and lead to the instability problems. To reveal the bursting oscillation characteristics and develop a suppression method, a fast‐slow dynamics analysis method and an improved adaptive high‐order differential feedback controller (AHODFC) based on ...
Kun Wang, Wei Chen, Jiangtao Li, Zhanhong Wei   +3 more
wiley   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Predicting blade vortex interaction, airloads and acoustics using the vorticity transport model [PDF]

, 2008
Interactions between the blades and vortical structures within the wake of a helicopter rotor are a significant source of impulsive loading and noise, particularly in descending flight.
Kelly, Mary E., Brown, R.E., Duraisamy, K., Kelly, M.E., Duraisamy, Karthikeyan, Brown, Richard   +5 more
core   +2 more sources

Sailing Through Time: Building Pacific Maritime Resilience

Global Policy, EarlyView.
ABSTRACT This article examines the Pacific Blue Shipping Partnership (PBSP), an ambitious initiative aimed at decarbonising maritime transport across Oceania. The study explores the cultural, historical and technological aspects of wind‐propelled shipping in the Pacific.
Christiaan De Beukelaer, John Taukäve, Maria Sahib, Eldine Glees, Aseri Driu, Joshua Lakabung, Atina Schutz, Joseph H. Genz, Shania G. Tamagyongfal, Jerolynn K. Myazoe, Alexander Mawyer, Alson Kelen, Larry Raigetal, Raffael Held, Andrew Irvin, Morgan Wairiu, Peter Nuttall, Transform Aqorau, Kyrie Lalauvaki, Aileen Sefeti, John Kautoke   +20 more
wiley   +1 more source

Multipole expansion approach for rotor noise prediction

Journal of Sound and Vibration
This paper presents a frequency-domain model of rotor tonal noise, based on a multipole expansion of the radiated field. The expressions for loading and thickness noise are derived in hovering condition, employing the results of compressible thin airfoil theory.
Felice Fruncillo, Paolo Luchini, Flavio Giannetti   +2 more
openaire   +2 more sources

Advances in 4D Representation: Geometry, Motion, and Interaction

Computer Graphics Forum, EarlyView.
We survey 4D representation through three key pillars — geometry, motion, and interaction — offering a selective, representation‐centric perspective to guide researchers in choosing and customizing the right 4D representation for their tasks. Abstract We present a survey on 4D generation and reconstruction, a fast‐evolving subfield of computer graphics
M. Zhao, S. Nag, K. Wang, A. Vora, G. Ji, P. Chun, A. Mahdavi‐Amiri, H. Zhang   +7 more
wiley   +1 more source

Denoised Improved Envelope Spectrum for Fault Diagnosis of Aero-Engine Inter-Shaft Bearing

Applied Sciences
The inter-shaft bearing is an important component of aero-engine rotor systems. It works between a high-pressure rotor and a low-pressure rotor. Effective fault diagnosis of it is significant for an aero-engine.
Danni Li, Longting Chen, Hanbin Zhou, Jinyuan Tang, Xing Zhao, Jingsong Xie   +5 more
doaj   +1 more source

Do we really need A‐shaped coordinators? A comparison across specialists versus generalists in coordinated exploration

European Management Review, EarlyView.
Abstract Coordinated exploration involves effectively integrating discoveries from different areas of expertise to identify high‐value combinations of alternatives. Extant literature suggests that a coordinator holding A‐shaped skills might play a crucial role in supporting groups in this process.
Michela Carraro, Andrea Furlan
wiley   +1 more source