Results 251 to 260 of about 215,132 (293)

Size of Chinese Head and Face Related to Respiratory Protective Device Design

open access: closed, 2021
This study presents a two-dimensional distribution table of Chinese head and face dimensions related to the design of respiratory protective devices. The two-dimensional distribution table is set up according to the coverage rate of head width shape length of adult men (18–60 years old) and adult women (18–60 years old).
Linghua Ran   +4 more
openaire   +2 more sources

Communication and/or entertainment system for use in a head protective device

open access: closedThe Journal of the Acoustical Society of America, 2010
The present invention is a communication or entertainment device that includes a first component and a second component. The first component includes a microphone and earpiece to be worn by the wearer. The second component is wirelessly coupled to the first component.
Antoine S. Gandolfo
openaire   +2 more sources

Ultra-Thin Silicon Carbon Nitride Film: a Promising Protective Coating for Read/Write Heads in Magnetic Storage Devices

open access: closedChinese Physics Letters, 2009
Ultra-thin amorphous Si–C–N films, down to 2nm, have been synthesized by MW-ECR, plasma enhanced unbalanced magnetron sputtering. The friction coefficient of the film is only 0.11, determined in dry friction tests against the GCr15 ball at a load of 400 mN for 20 min.
Gao Peng   +3 more
  +4 more sources
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Head-to-head comparison of two embolic protection devices in carotid artery stenting

European Heart Journal, 2023
Abstract Introduction Embolic protection devices (EPD) have been developed to reduce the risk of distal embolization and have become ubiquitous in carotid interventions. There are two classes of EPD: distal filter EPD (f-EPD) and proximal EPD (p-EPD).
A Silva   +6 more
openaire   +1 more source

Compliance Prediction of a Novel Head Protection Device for Elderly Patients With Fall Risk

The American Surgeon™, 2023
Brain injury from ground level falls (GLF) is common and has substantial morbidity. We identified a potential head protection device (HPD). This report describes predicted future compliance. 21 elderly patients were provided a HPD and were evaluated on admission and after discharge. Compliance, ease of use, and comfort were evaluated.
John P, Kepros   +2 more
openaire   +2 more sources

Electric Traction Over Head Equipment Protection Using Intelligent Electronic Device

2021
Protection relays used in traction system application utilize impedance protection having parallelogram characteristics with three zones of protection comprising independent R, X values with forward, reverse and independent time settings. These relays are configured to protect the 25 kV single phase 50 Hz traction transmission line which is fed from ...
K. N. Dinesh Babu, Salman Khan
openaire   +1 more source

Controlled release insecticide devices for protection of sheep against head strike caused by Lucilia cuprina

Veterinary Parasitology, 1994
The effectiveness of polymer matrix tags containing (w/w) 8.5% cypermethrin, 7.5% flucythrinate, 13.7% tetrachlorvinphos or 20.0% diazinon in protecting sheep against head strike by the sheep blowfly (Lucilia cuprina Wiedemann) was investigated in larval implant, fly cage and field studies. Tags impregnated with cypermethrin reduced the total number of
James, P. J.   +3 more
openaire   +3 more sources

Creation of a head and face protection device for children undergoing procedures in prone position

Pediatric Anesthesia, 2009
SummaryBackground:  Positioning the head of patients undergoing procedures in lateral or prone position remains a difficult task for the anesthesiologists. Associated risks have attracted increasing attention because they range from minor facial soft tissue injuries to catastrophic complications such as stroke or postoperative blindness.
Manuel, Wenk   +5 more
openaire   +2 more sources

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