Results 121 to 130 of about 7,981,538 (380)

An Active Shaping Reflector Method for Space-Borne Membrane Reflector Antennas

IEEE Access
Conventional space-borne antenna shaping designs predominantly rely on a pre-defined reflector geometry, which lacks the capability to adapt to varying multi-stage service requirements once in orbit.
Gu Yongzhen, Wang Mengtian, Wang Haoxin
doaj   +1 more source

Design of a 5G Sub-6 GHz Vehicular Cellular Antenna Element with Consistent Radiation Pattern Using Characteristic Mode Analysis. [PDF]

Sensors (Basel), 2022
Abdul-Rahman E, Aloi DN.
europepmc   +1 more source

Quantum fluctuations around black hole horizons in Bose-Einstein condensates

, 2012
We study several realistic configurations allowing to realize an acoustic horizon in the flow of a one dimensional Bose-Einstein condensate. In each case we give an analytical description of the flow pattern, of the spectrum of Hawking radiation and of ...
A. L. Fetter, A. Recati, C. Barceló, D. F. Walls, D. Pines, G. E. Volovik, I. Carusotto, J. P. Blaizot, L. D. Landau, M. Elazar, N. Pavloff, P.-É. Larré   +11 more
core   +1 more source

Patterns of Recurrence and Its Value to Target of Postoperative Radiation Therapy in Patients of Stage III Thoracic Esophageal Carcinoma [PDF]

, 2015
Y.X. Wang, Qing Yang, J. Li, Min He, Jiashu Yao, Qi Zhan, Xi Qiao   +6 more
openalex   +1 more source

Capturing the Acoustic Radiation Pattern of Strombolian Eruptions using Infrasound Sensors Aboard a Tethered Aerostat, Yasur Volcano, Vanuatu

, 2017
We obtained an unprecedented view of the acoustic radiation from persistent strombolian volcanic explosions at Yasur volcano, Vanuatu, from the deployment of infrasound sensors attached to a tethered aerostat.
A. Jolly, R. Matoza, D. Fee, B. Kennedy, A. Iezzi, R. Fitzgerald, A. Austin, Richard Johnson   +7 more
semanticscholar   +1 more source

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu, Yuxi Gong, Weilin Xu, Xingjian Sun, Gefei Jiang, Lei Qiu, Kexin Shi, Mengxing Wu, Yinjiao Fei, Jinling Yuan, Jinyan Luo, Yurong Li, Yuandong Cao, Minhong Pan, Shu Zhou   +14 more
wiley   +1 more source

POSSIBILITIES OF INCREASING THE ENERGY OF RADIO LINES FOR CONTROLLING DRONES

Information and Telecommunication Sciences
Background. The creation of an antenna system consisting of two spiral structures for the 2,4 GHz and 5,8 GHz frequency bands is caused by practical needs determined by the results of using drones to monitor the environment.
Олег Бердников, Юрій Гічко, Сергій Мазор, Тетяна Храновська   +3 more
doaj   +1 more source

Metasurfaces for Far-Field Radiation Pattern Correction of Antennas under Dielectric Seamed-Radomes. [PDF]

Materials (Basel), 2022
Cacocciola R, Ratni B, Mielec N, Mimoun E, Burokur SN.   +4 more
europepmc   +1 more source

Research study of some RAM antennas Final report, 18 Nov. 1964 - 18 Jun. 1965 [PDF]

Input impedance and radiation pattern determinations for cylindrical gap, waveguide excited and circular waveguide slot antenna ...
Butler, L., Gilon, P., Hodara, H., Knop, C. M., Love, A. V., Rasmussen, G.   +5 more
core   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu, Yinjiao Fei, Jiaxuan Ding, Kexin Shi, Jinyan Luo, Yuchen Zhu, Xingjian Sun, Gefei Jiang, Yuandong Cao, Weilin Xu, Shu Zhou   +10 more
wiley   +1 more source