Results 251 to 260 of about 121,274 (339)

Estimation of the blood Doppler frequency shift by a time-varying parametric approach

, 2000
Jean‐Marc Girault, Denis Kouamé, Abdeldjalil Ouahabi, F. Patat   +3 more
openalex   +2 more sources

Advances in research on impulse hydro‐turbine technology

River, EarlyView.
Abstract To accelerate the development of impulse hydro‐turbines and support the efficient utilization of hydropower resources in Southwest China, this paper examines the background, historical development, and research progress of impulse hydro‐turbines.
Xiaochao Li, Ye Zhou, Hao Zhang, Guanglei Xiao, Yanwei Li, Zhongxin Gao, Zhiyang Lu, Shangqi Li   +7 more
wiley   +1 more source

Observation of nonreciprocal transverse localization of light. [PDF]

Nat Commun
Liang S, Li C, Liu Z, Yu W, Li C, Zhang Y, Malpuech G, Solnyshkov D, Jing H, Zhang Z.   +9 more
europepmc   +1 more source

IDLB: An SDN‐Based Load‐Balancing Routing Protocol for Autonomous Satellite Constellation Networks

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Routing in satellite constellation networks with intersatellite links has become an important aspect to enable broadband Internet access and to integrate into terrestrial networks. However, their dynamic characteristics and large physical size require specifically tailored solutions.
Manuel M. H. Roth, Hartmut Brandt, Hermann Bischl, David Fernández Piñas, Guray Acar   +4 more
wiley   +1 more source

The Role of Ophthalmic Artery Doppler in Predicting Preeclampsia: A Review of the Literature. [PDF]

Medicina (Kaunas)
Gana N, Năstac A, Apostol LM, Huluță I, Gica C, Peltecu G, Gica N.   +6 more
europepmc   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

A Computational Approach to Increasing the Antenna System's Sensitivity in a Doppler Radar Designed to Detect Human Vital Signs in the UHF-SHF Frequency Ranges. [PDF]

Sensors (Basel)
Vatamanu D, Miclaus S.
europepmc   +1 more source

Activatable smart contrast agents for photoacoustic imaging

Smart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh, Jihye Lee, Suyoung Park, Juyoung Yoon, Won Jong Kim, Chulhong Kim   +5 more
wiley   +1 more source

A Technique to Track Scatterers for Continuous High-speed Plane-wave Ultrasound Simulations based on a Fluid Domain Model. [PDF]

IEEE Open J Ultrason Ferroelectr Freq Control
Ketterling JA, Wahyulaksana G, Bazzi MS, Wiputra H.   +3 more
europepmc   +1 more source

Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

steel research international, EarlyView.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler, Marek Gocnik, Phillip Haslberger, Matthew Galler, Andreas Stark, Oleksandr Glushko, Jozef Keckes, Ronald Schnitzer   +7 more
wiley   +1 more source