Results 61 to 70 of about 252,409 (330)

Defect Analysis of the β– to γ–Ga2O3 Phase Transition

Advanced Functional Materials, EarlyView.
The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas, Maciej O. Liedke, Huan Liu, Fabian Ganss, Maik Butterling, Nico Klingner, René Hübner, Ilja Makkonen, Andreas Wagner, Gregor Hlawacek   +9 more
wiley   +1 more source

Wind Wave Effects on the Doppler Spectrum of the Ka-Band Spaceborne Doppler Measurement

Remote Sensing
Sea surface wind, waves, and currents are the three basic parameters that describe the dynamic process of sea surface, and they are coupled with each other. To more accurately describe large-scale ocean motion and extract the ocean dynamic parameters, we
Miaomiao Yu, Di Zhu, Xiaolong Dong
doaj   +1 more source

Influence of Orographic and Canopy Conditions on Friction Velocities Observed during Frontal Events Using Doppler Sodar Observations

Journal of Applied Meteorology, 1993
Sodar friction velocities, obtained during frontal events traversing areas characterized by different orgraphic and canopy conditions (flat, bare ground, small hills and valleys with agricultural crops and trees, agricultural crops and forest on a flat ground, bare ground on the side of a mountain), are compared in order to identity the influence of ...
Kotroni, V., Amory-Mazaudier, Christine
openaire   +2 more sources

Electro‐Active Polymer Actuated Microfiltration Membranes: Design, Performance, and Particle Dynamics

Advanced Functional Materials, EarlyView.
The concept of foulant particle manipulation and detachment from active microfiltration membranes via voltage‐driven vibrations is introduced. Actuator components are initially integrated onto the filtration membranes using an airbrush spray printing technique.
Irem Gurbuz, Hanieh Bazyar, Andres Hunt
wiley   +1 more source

Observation and Real-Time Simulation of a Tornado Event in Hong Kong on 29 August 2018

Advances in Meteorology, 2019
An observational and simulation study of a tornado event in Hong Kong that occurred in the morning of 29 August 2018 is documented in this paper. Rotating airflow associated with the tornado is well captured by the Doppler velocity from a Terminal ...
K. K. Hon, S. M. Tse, P. W. Chan, Q. S. Li   +3 more
doaj   +1 more source

Velocity Structure of Jets in Coronal Hole

, 2007
Velocity structures of jets in a coronal hole have been derived for the first time. Hinode observations revealed the existence of many bright points in coronal holes. They are loop-shaped and sometimes associated with coronal jets.
Culhane, Len, Hara, Hirohisa, Kamio, Suguru, Matsuzaki, Keiichi, Shibata, Kazunari, Warren, Harry, Watanabe, Tetsuya   +6 more
core   +2 more sources

The kinematic component of the cosmological redshift [PDF]

, 2011
It is widely believed that the cosmological redshift is not a Doppler shift. However, Bunn & Hogg have recently pointed out that to settle properly this problem, one has to transport parallelly the velocity four-vector of a distant galaxy to the observer'
Abramowicz, Abramowicz, Barnes, Bondi, Bunn, Chodorowski, Chodorowski, Cook, Davis, Davis, Faraoni, Fraknoi, Francis, Grøn, Harrison, Kaufmann, Lewis, Lewis, Michał J. Chodorowski, Milne, Milne, Narlikar, Padmanabhan, Peacock, Peebles, Rindler, Schutz, Seeds, Synge, Whiting, Will   +30 more
core   +1 more source

Using Wavelet Analysis to Detect Tornadoes from Doppler Radar Radial-Velocity Observations

Journal of Atmospheric and Oceanic Technology, 2007
AbstractA wavelet-based algorithm is developed to detect tornadoes from Doppler weather radar radial-velocity observations. Within this algorithm, a relative region-to-region velocity difference (RRVD) is defined based on the scale- and location-dependent wavelet coefficients and this difference represents the relative magnitude of the radial velocity ...
Shun Liu, Ming Xue, Qin Xu
openaire   +1 more source

The impact of stellar oscillations on doppler velocity planet searches [PDF]

, 2007
We present a quantitative investigation of the effect of stellar oscillations on Doppler velocity planet searches. Using data from four asteroseismological observation campaigns, we find a power-law relationship between the noise impact of these ...
S. O’Toole, C. Tinney, H. R. Jones
semanticscholar   +1 more source

Drug‐Free Thrombolysis Mediated by Physically Activated Micro/Nanoparticles

Advanced Functional Materials, EarlyView.
Overview of particle‐mediated thrombolytic effects (thermal, mechanical, and chemical) and their activating physical stimuli (light, ultrasound, and magnetic field) in drug‐free thrombolysis. ABSTRACT Thrombus‐associated disorders rank among the world's leading causes of death, with ischemic heart disease and stroke as the main contributors.
Pierre Sarfati, Yoann Lalatonne, Cédric Chauvierre   +2 more
wiley   +1 more source