Results 101 to 110 of about 20,719 (245)

Embodied Intelligence for Soil Health toward Sustainable Smart Agriculture: Sensing the Soil with Flexible Geotextiles Sensors

Global Challenges, Volume 10, Issue 6, June 2026.
This review examines the transition from rigid to flexible soil sensing technologies in the context of soil as a dynamic and heterogeneous environment. By integrating sensor types, sensing modalities, materials, fabrication and deployment strategies, and IoT‐enabled energy and communication approaches, it highlights geotextiles as scalable sensing ...
Ayse Feyza Yilmaz, Meltem Tekcin, Burak Kilic, Erdem Bahadir, Fatima Iqbal, Ahad Khabbaz Bavil, Batuhan Atasoy, Senem Kursun   +7 more
wiley   +1 more source

UHF RFID [PDF]

, 2019
RFID on radiotaajuuksilla toimiva langaton etätunnistusmenetelmä. RFID-tunnistamisen tärkeimpänä ominaisuutena on, että radioaaltoja käytettäessä kohteiden tunnistaminen yksilöivästi ei vaadi suoraa näköyhtettä kohteen ja lukijan välillä.
Laukkanen, Lasse
core  

Power Transmission of UHF Passive Embedded RFID in Tires

International Journal of Antennas and Propagation, 2014
UHF passive RFID tags embedded in tires have a deep impact on tire life cycle management and tire monitoring. In this work, we present the power transmission of UHF passive embedded RFID in tires.
Shengbo Hu, Bing Si, Heng Shu, Jinrong Mo   +3 more
doaj   +1 more source

All in One 315 MHz ASK UHF Receiver

, 2014
An all in one integrated 315MHz ASK UHF receiver is proposed in this paper. This receiver is a monolithic ultrahigh frequency (UHF) receiver including radio-frequency (RF) front-end, intermediate-frequency (IF) stage, base-band stage and final filter ...
Lee, Yang-Han; Chen, Jiann-Jong; Huang, Chao-Chung; Shih, Cheng-Ming; Chen, Hsuan-Fan
core  

Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]

, 2007
On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew, Pedersen, T., Kosch, Mike J., Bristow, B., Mishin, E., Watkins, B., Hughes, J., Oyama, S.   +7 more
core  

UHF RFID tag antennas for wearable devices

, 2023
RFID technology is evolving as one of the most popular technologies in this era of technology, fast gaining attention due to high demand from users and rapidly garnering interest in scientific and commercial areas. The frequency used will be determined
Azreen Azemin, Wan Nur, Che Beson, Rashidi, Azemi, Saidatul Norlyana, Hassan, Nornikman, Amir, Amiza   +4 more
core  

Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3608-3615, June 2026.
ABSTRACT Purpose To investigate dipole antennas with electronically switchable transmit field patterns to improve flip angle homogeneity in ultra‐high field MRI. Methods Reconfigurable dipole elements that could produce two distinct electronically switchable B1+ field profiles were conceptualized and constructed.
Dario Bosch, Georgiy A. Solomakha, Felix Glang, Martin Freudensprung, Nikolai Avdievich, Klaus Scheffler   +5 more
wiley   +1 more source

Summary plot of EISCAT UHF radar data at Tromso

, 2011
1-day summary plot of basic parameters (electron density, electron and ion temperature, ion drift velocity, and radar operation parameters) observed by EISCAT UHF radar at Tromso.
Shin-ichiro Oyama, Tomoaki Hori, Satonori Nozawa, ISEE IUGONET Metadata Management Group   +3 more
core  

Classification of limits of upper triangular matrix algebras. [PDF]

, 1993
Let Tn be the operator algebra of upper triangular n × n complex matrices. Three families of limit algebras of the form lim (Tnk) are classified up to isometric algebra isomorphism: (i) the limit algebras arising when the embeddings Tnk→Tnk+1, are ...
Hopenwasser, A. L., Power, Stephen C.
core  

Microstructure forming mechanism of inconel 625 alloy fabricated by laser/ultra-high (UHF) induction hybrid deposition method

Journal of Materials Research and Technology
To reveal the microstructure forming mechanism of laser/ultra-high frequency (UHF) induction deposition, this paper developed a microscopic phase-field (PF) model to numerically investigate dendrite growth during solidification.
Yuhang Qiao, Rui Sun, Yong Yang, Shukun Liu, Xiaogang Wang   +4 more
doaj   +1 more source