Results 11 to 20 of about 234,924 (310)

Pressure redistributing static chairs for preventing pressure ulcers [PDF]

open access: yesCochrane Database of Systematic Reviews, 2020
This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the effects of pressure redistributing static chairs on the prevention of pressure ulcers in health, rehabilitation, social care settings, and places of residence in which people may spend their day.
Melanie Stephens   +3 more
openaire   +3 more sources

Static Characteristics of Pressure Control Valve

open access: yesJournal of Mechanical Engineering, 2017
The article deals with the measurement of static characteristics of a pressure control valve. The pressure, at which the valve starts to leak oil, is adjusted by a spring.
Vykoukal Ondřej   +2 more
doaj   +2 more sources

The Mechanism of How a Cavity Affects the Fluctuating Pressure Measurement Results of a Static Pressure Probe

open access: yesDynamics
A static pressure probe is a crucial tool for measuring static pressure fluctuations, and its internal cavity structure can significantly affect the accuracy of the data obtained.
Chao Wang   +3 more
doaj   +2 more sources

Lateral Force Acting on the Sliding Spool of Control Valve Due to Radial Flow Force and Static Pressure

open access: yesIEEE Access, 2021
The hydraulic sliding-spool valve is a key component to control the flow rates and thus pressures in different hydraulic volumes. The lateral force on the spool is one of the important effects resulting from moving resistance.
Qianqian Lu   +3 more
doaj   +1 more source

Rate-Pressure Product Responses to Static Contractions Performed at Various Altitudes

open access: yes, 2021
Background: Adventure tourism has led to an unprecedented number of individuals being exposed to altitude, including those with subclinical cardiometabolic disorders.
Simmonds, Michael J   +2 more
core   +1 more source

Resistência de café em coco e despolpado ao fluxo de ar Airflow resistance of pulped and dried cherry coffee bed

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2006
Determinaram-se, neste trabalho, expressões para descrever: (1) variações da massa específica, aparente e real, e porosidade do café (coco e despolpado) em função do teor de umidade do produto e (2) o comportamento dos valores de resistência ao fluxo de ...
Danilo J. P. da Silva   +4 more
doaj   +1 more source

Analysis of the influence of lubricant supply conditions on the pressure distribution in squeeze-film dampers

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
One of the most common ways to reduce vibration in aircraft engines is the use of damping devices. Squeeze-film dampers are the dampers most widely used in aircraft engine designs.
D. K. Novikov, N. S. Shliandina
doaj   +1 more source

ANALYTICAL METHODS FOR CALCULATING FAN AERODYNAMICS

open access: yesActa Polytechnica, 2015
This paper presents results obtained between 2010 and 2014 in the field of fan aerodynamics at the Department of Composite Technology at the VZLÚ aerospace research and experimental institute in Prague – Letnany.
Jan Dostal, Jan Kuzel
doaj   +1 more source

Indicated airspeed error due to gradual blocking of pitot tube with drain hole

open access: yesAviation, 2022
Problem of pitot tube blocking is persistent because even in the recent past there have been several accidents based on inaccurate information from air speed indicators.
Filip Sklenář, Jiří Matějů
doaj   +1 more source

Materials synthesis at terapascal static pressures

open access: yesNature, 2022
AbstractTheoretical modelling predicts very unusual structures and properties of materials at extreme pressure and temperature conditions1,2. Hitherto, their synthesis and investigation above 200 gigapascals have been hindered both by the technical complexity of ultrahigh-pressure experiments and by the absence of relevant in situ methods of materials ...
Leonid Dubrovinsky   +17 more
openaire   +5 more sources

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