Results 31 to 40 of about 40,023 (305)

Design and Implementation of Real-Time Software Radio for Anti-Interference GPS/WAAS Sensors

Sensors, 2012
Adaptive antenna array processing is widely known to provide significant anti-interference capabilities within a Global Navigation Satellite Systems (GNSS) receiver.
Per Enge, David S. De Lorenzo, Dennis M. Akos, Sherman Lo, Yu-Hsuan Chen, Jyh-Ching Juang, Jiwon Seo   +6 more
doaj   +1 more source

Adaptive Correction for Radiation Patterns of Deformed Phased Array Antenna

IEEE Access, 2020
The radiation patterns of an active phased array antenna (APAA) will inevitably deteriorate in service, due to the physical deformation of the antenna surface.
Bo Tang, Jinzhu Zhou, Baofu Tang, Yan Wang, Le Kang   +4 more
doaj   +1 more source

Multi-Beam Radar Communication Integrated System Design

Information, 2023
In this paper, we propose a multi-beam integrated radar and communication scheme using phased-array antenna, in which the same LFM-BPSK integrated waveform is used for both the radar and the communication beams.
Hao Ma, Jun Wang, Xin Sun, Wenxin Jin
doaj   +1 more source

Adaptive feed array compensation system for reflector antenna surface distortion [PDF]

Digest on Antennas and Propagation Society International Symposium, 2003
The feasibility of a closed-loop adaptive feed array system for compensating reflector surface deformations is investigated. The performance characteristics (gain, sidelobe, level, pointing, etc.) of large communication antenna systems degrade as the reflector surface distorts mainly due to thermal effects from a varying solar flux.
R. Acosta, A. Zaman
openaire   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Innovative Radiating Systems for Train Localization in Interference Conditions

International Journal of Antennas and Propagation, 2013
The design of innovative radiating systems based on the metamaterial technology for GNSS (Global Navigation Satellite System) applications in radio frequency (RF) interference conditions is proposed.
C. Vegni, M. Tosti, A. M. Vegni
doaj   +1 more source

Phased Array Feed Calibration, Beamforming and Imaging [PDF]

, 2009
Phased array feeds (PAFs) for reflector antennas offer the potential for increased reflector field of view and faster survey speeds. To address some of the development challenges that remain for scientifically useful PAFs, including calibration and ...
Alan Stemmons, Borthakur, Brian D. Jeffs, Chynoweth, Dame, David Jones, Ellingson, Ellingson, Fisher, Fisher, Gilmon, Hay, J. Richard Fisher, Jacob Waldron, Jeffs, Jeffs, Jeffs, Jonathan Landon, Karl F. Warnick, Landon, Landon, Leshem, Leshem, Liszt, Lockman, Michael Elmer, Murphy, Oosterloo, Poulsen, Putman, Roddy, Roger D. Norrod, Taylor, Thilker, Van Trees, Verheijen, Waldron, Warnick, Warnick, Willis, Woestenburg, Zhang, Zhang   +42 more
core   +1 more source

Cytoplasmic p21 promotes stemness of colon cancer cells via activation of the NFκB pathway

Molecular Oncology, EarlyView.
Cytoplasmic p21 promotes colorectal cancer stem cell (CSC) features by destabilizing the NFκB–IκB complex, activating NFκB signaling, and upregulating BCL‐xL and COX2. In contrast to nuclear p21, cytoplasmic p21 enhances spheroid formation and stemness transcription factor CD133.
Arnatchai Maiuthed, Kerstin Huebner, Katharina Erlenbach‐Wuensch, Chuanpit Hampel, Daniela Thalheim, Adriana Vial‐Roehe, Bodee Nutho, Susanne Merkel, Arndt Hartmann, Pithi Chanvorachote, Regine Schneider‐Stock   +10 more
wiley   +1 more source

Plecstatin inhibits hepatocellular carcinoma tumorigenesis and invasion through cytolinker plectin

Molecular Oncology, EarlyView.
The ruthenium‐based metallodrug plecstatin exerts its anticancer effect in hepatocellular carcinoma (HCC) primarily through selective targeting of plectin. By disrupting plectin‐mediated cytoskeletal organization, plecstatin inhibits anchorage‐dependent growth, cell polarization, and tumor cell dissemination.
Zuzana Outla, Jan Kosla, Magdalena Prechova, Lukas Frick, Patricia Bortel, Yasmin Borutzki, Andrea Bileck, Christopher Gerner, Samuel M. Meier‐Menches, Selma Osmanagic‐Myers, Martin Gregor   +10 more
wiley   +1 more source

Adaptive Transmit Antenna Selection Based on PCA for Millimeter Wave LOS MIMO Channel

IEEE Access, 2019
Uniform rectangular antenna array (URA) is a commonly used antenna array in multiple-input multiple-output (MIMO) system. However, the existing works rarely concentrate on URA in millimeter-wave (mmWave) line-of-sight (LOS) MIMO channels.
Li Zhu, Jiang Zhu, Shilian Wang, Jiao Zhang   +3 more
doaj   +1 more source