Results 21 to 30 of about 20,719 (245)

Miniaturized Multi-band Compound Antenna for Detecting Partial Discharge in GIS

Zhongguo dianli, 2023
In order to detect the UHF signal of partial discharge (PD) in gas insulated switchgear (GIS), a multi-frequency point broadband compound antenna was designed for detecting PD in GIS.
Yang FENG, Lei ZHOU, Quanfu MA, Song YIN, Shuo WANG   +4 more
doaj   +1 more source

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : channel scattering function [PDF]

, 2009
The design and operation of transionospheric VHF and UHF radars requires knowledge of amplitude and phase scintillation due to ionospheric scattering.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Temporary On-Skin Passive UHF RFID Transfer Tag [PDF]

, 2011
A passive UHF RFID tag design is presented in the form of a transfer patch similar to a temporary tattoo that is mountable directly onto the skin surface.
Ziai, Mohamed A., John C. Batchelor, Batchelor, John C., Mohamed Ali Ziai   +3 more
core   +1 more source

Enhanced Read Range Tattoo RFID Tags [PDF]

, 2015
Transfer Tattoo RFID tags are described for person locating scenarios. The technology considered is Radio Frequency Identification (RFID) at the UHF Band where it is possible to obtain wireless connection over distances of several meters using passive ...
Oyeka, Dumtoochukwu O., John C. Batchelor, Turki, Badredin M., Batchelor, John C., Badredin M. Turki, Dumtoochukwu O. Oyeka   +5 more
core   +1 more source

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : coherence times, coherence bandwidths and S4 [PDF]

, 2009
Irregularities in the electron density of the ionosphere cause phase and amplitude scintillation on transionospheric VHF and UHF radar signals, particularly at lower radio frequencies.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Multi-State Logging Freeze Detection Passive RFID Tags [PDF]

, 2014
In this work the design and measurement of a passive UHF RFID smart tag suitable for monitoring and recording critical temperature violations in cold chain management are presented.
Ziai, M. Ali, John C. Batchelor, M. Ali Ziai, Batchelor, John C.   +3 more
core   +1 more source

Skin-Mounted RFID Sensing Tattoos for Assistive Technologies [PDF]

, 2014
UHF RFID technology is presented that can facilitate new passive assistive technologies. Tongue control for human computer interfaces is first discussed where a tag is attached to the hard palate of the mouth and the tag turn-on power is observed to vary
Rumens, C.V., Rakibet, Osman Ö., John C Batchelor, Simon J Holder, Osman O Rakibet, Batchelor, John C., Rakibet, Osman Ozgur, Holder, Simon J., Rumens, Christina V., Christina V Rumens   +9 more
core   +1 more source

Isomorphisms of UHF algebras

Journal of Functional Analysis, 1978
AbstractWe show that all uniformly hyperfinite C∗-algebras have Borel isomorphic spectra, and that the spectrum of each separable C∗-algebra not of type I contains a copy of this space as a Borel subset.
openaire   +2 more sources

Broadband Compact Quasi Yagi Antenna for UHF Wireless Communication Systems with Enhanced Performance at UHF ISM Bands [PDF]

Radioengineering, 2020
In this study, a broadband planar quasi Yagi antenna operated at ultra-high frequency (UHF) band is presented. The performance of the antenna is particularly improved for two popular UHF frequencies of 433 and 868 MHz used in several wireless ...
Y. Bakirli, A. Selek, M. Secmen
doaj  

TDZ Induced Organogenesis and Phytochemical Profiling of In Vitro Raised Plants of Sarpgandha (Rauvolfia serpentina L.)- An Endangered Medicinal Plant

International Journal of Economic Plants
This study was conducted during June, 2020–2021 at Department of Biotechnology, COHF, Dr YS Parmar UHF, Neri, Hamirpur, Himachal Pradesh, India for evaluating effect of TDZ on in vitro regeneration of Rauwolfia serpentina and further phytochemicals ...
Karuna Dhiman, Shipra Sharma , Priyankal Soni, Reena Kumari   +3 more
doaj   +1 more source