Results 11 to 20 of about 20,719 (245)
Wideband UHF Antenna for Partial Discharge Detection
Applied Sciences (Switzerland), 2020 This paper presents a ultra-high frequency (UHF) antenna for partial discharge (PD) detection and the antenna sensor can be used near a conducting ground wire.
Zhen Cui, Jong-Eon Park, Hosung Choo
exaly +4 more sources
Haemodynamic-Focused Bedside Ultrasound Enhances Early Detection of Sacral Pressure Injuries in Immobilised Polytrauma Patients. [PDF]
Int Wound JABSTRACT Early detection of sacral pressure injuries (PIs) in immobilised polytrauma patients remains challenging. This study evaluated ultrahigh‐frequency (UHF) ultrasound combining structural and haemodynamic parameters for early PI diagnosis. In a prospective cohort of 73 polytrauma patients (Injury Severity Score 16–25), daily sacrococcygeal ...
Chen J, diWen Y, Zhu D, Du Y, Yuan L.
europepmc +2 more sources
Sensors, 2017 The ultra-high frequency (UHF) method is widely used in insulation condition assessment. However, UHF signal processing algorithms are complicated and the size of the result is large, which hinders extracting features and recognizing partial discharge ...
Xiaohua Wang, Xi Li, Mingzhe Rong
exaly +3 more sources
Functional and structural connectivity of thalamic subnuclei in major depressive disorder at 7 Tesla. [PDF]
Psychiatry Clin NeurosciAims Major depressive disorder (MDD) is widely considered to be a mood disorder characterized by altered connectivity. The thalamus plays an important role in MDD by connecting large areas of the brain. Here, we explored thalamic connectivity in MDD at the subnuclear level using ultra‐high‐field MRI.
Liu W +10 more
europepmc +2 more sources
Calibration Proposal for UHF Partial Discharge Measurements at Power Transformers
Energies, 2019 The continuous, non-intermitted service of electrical grids relies on the reliability of their assets, e.g., power transformers. Local insulation defects can result in serve failures such as breakdowns with severe subsequent costs. The prevention of such
Martin Siegel +2 more
exaly +3 more sources
Textronic UHF RFID Transponder [PDF]
Sensors, 2021 In order to respond the growing interest towards radio frequency identification textile transponders, the authors propose a new approach to design radio frequency identification (RFID) devices by introducing the RFIDtex concept. The coupling system of inductive loops is implemented in the textronic structure with the RFID interface in order to split ...
Piotr Jankowski-Mihulowicz +3 more
openaire +3 more sources
Environment Conservation Journal, 2023 The investigation was undertaken and micro nutrients status of the area was assessed. During February-March 2020, 50 soil sampling locations from tomato growing areas were selected at random and 100 representative surface (0-15 cm) and sub-surface (15 ...
Aanchal +4 more
doaj +1 more source
Impedance meter in the UHF Band using Reflectometry Techniques
Revista Elektrón, 2023 This paper proposes the design and implementation of an impedance meter in the UHF band using reflectometry techniques. The device has the ability to measure the amplitude ratio and the phase difference of the reflected signal of a system under test with
Brian Maximiliano Gluzman +4 more
doaj +1 more source
Journal of Functional Analysis, 1990 AbstractIn this paper we classify triangular UHF algebras. The generic triangular UHF algebra is constructed as follows. Let (pn) be any sequence of positive integers such that pm|pn whenever m ⩽ n. For each n let Tpn be the algebra of all pn × pn upper triangular complex matrices, and for m ⩽ n, let σpn·pm: Tpm → Tpn be the mapping, x↦1d⊗x, where d ...
Baker, Richard L
openaire +2 more sources
On the Performance of a Microstrip Antenna Based UC-PBG Structures for UHF RFID Readers [PDF]
Engineering and Technology Journal, 2018 Microstrip antennas suffer from low gain bandwidth product due to surface wave effects and aperture diffractions that limit their use for long-range communications.
Ali Jalal, Marwa Jwair
doaj +1 more source