Results 1 to 10 of about 2,452,648 (268)

Design of Wideband High-Gain Patch Antenna Array for High-Temperature Applications

open access: yesSensors, 2023
A low-profile, wideband, and high-gain antenna array, based on a novel double-H-shaped slot microstrip patch radiating element and robust against high temperature variations, is proposed in this work.
Ruibo Li   +7 more
doaj   +1 more source

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

open access: yesInternational Journal of Antennas and Propagation, 2022
Radio astronomy is a discipline of dynamics and wonders. The vast universe has many secrets to unravel. As one of the important facilities in this discipline, radio telescopes play a key role in collecting astronomical data and unraveling mysteries. With
Yuefei Yan   +9 more
doaj   +1 more source

Miniaturised element frequency selective surface design for high power microwave applications

open access: yesIET Microwaves, Antennas & Propagation, 2023
A third‐order miniaturised element frequency selective surface (MEFSS) for high‐power microwave (HPM) systems is proposed. The MEFSS design is characterised by the excellent capability to handle high‐power waves and the stable frequency response at large
Kai Wu   +4 more
doaj   +1 more source

Development of a Safe Syringe Disposal System Moving towards Automated Syringe Data Collection [PDF]

open access: yesHealthcare Informatics Research, 2019
ObjectivesAn automatic needle destroyer (ANDY) was developed to prevent needlestick injuries, and usability tests were conducted in several hospitals.
Youhwa Kim   +3 more
doaj   +1 more source

Effectiveness of Two Techniques in Removal of Calcium Hydroxide Medicament from Root Canals: An in-vitro Assessment [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2018
Introduction: Calcium Hydroxide {Ca(OH)2 } is widely used as intracanal medicament. However, complete removal of Ca(OH)2 is very difficult from canal walls resulting in its residues on canal wall which interfere with bonding of sealers and reduce success
Ravi Gupta   +5 more
doaj   +1 more source

Neonatal Resuscitation With T-Piece Systems: Risk of Inadvertent PEEP Related to Mechanical Properties

open access: yesFrontiers in Pediatrics, 2021
Background: Resuscitation of infants using T-piece resuscitators (TPR) allow positive pressure ventilation with positive end-expiratory pressure (PEEP). The adjustable PEEP valve adds resistance to expiration and could contribute to inadvertent PEEP. The
Thomas Drevhammar   +7 more
doaj   +1 more source

Effect of Torso and Breast Characteristics on the Perceived Fit of Body Armour Systems Among Female Soldiers: Implications for Body Armour Sizing and Design

open access: yesFrontiers in Sports and Active Living, 2022
This study aimed to provide normative data characterising the torsos and breasts of female soldiers and to determine which torso and breast anthropometric measurements contributed to reports of poor body armour fit.
Celeste E. Coltman   +3 more
doaj   +1 more source

The Mechanism of Drug Carryover in Feed Manufacturing as a Function of Drug Properties and Equipment Design—A Brief Review

open access: yesAgriculture, 2023
This paper thoroughly reviews the mechanism of veterinary drug carryover in feed manufacturing facilities, factors resulting in varying concentrations of drug carryover in processing equipment, the impact of chemical and physical properties of drugs, and
Esther Y. Akoto, Dirk E. Maier
doaj   +1 more source

Tribological and dry drilling performance of WS2/Cr-AlCrN coatings

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
Dry drilling gives a higher request to the anti-friction property of cutting tools. However, most tool coatings commonly have less lubricant effect. In present paper, WS2/Cr layer was deposited on AlCrN layer by a radio frequency magnetron sputtering ...
Shipeng LI   +4 more
doaj   +1 more source

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