Results 121 to 130 of about 6,861,533 (339)

Research on Performance of Wall-Attached Pulse Jet Nozzle at Confining Pressure

open access: yesShiyou jixie, 2020
Wall-attached pulse jet nozzles can be used for downhole drilling operation like rock cutting and breaking. Numerical simulation was conducted on the flow field in the wall-attached pulse jet nozzle at 30 MPa high confining pressure for analyzing the jet
Pang Dexin   +6 more
doaj  

Pulse wave response characteristics for thickness and hardness of the cover layer in pulse sensors to measure radial artery pulse

open access: yesBioMedical Engineering OnLine, 2018
Background Piezo-resistive pressure sensors are widely used for measuring pulse waves of the radial artery. Pulse sensors are generally fabricated with a cover layer because pressure sensors without a cover layer are fragile when they come into direct ...
Min-Ho Jun   +3 more
doaj   +1 more source

Consumed by Abdominal Distention

open access: yes
Arthritis Care &Research, EarlyView.
Abimbola Fadairo‐Azinge   +3 more
wiley   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

Rapid declines in systolic blood pressure are associated with an increase in pulse transit time.

open access: yesPLoS ONE, 2020
BackgroundThe correlation between pulse transit time and blood pressure has been proposed as a route to measure continuous non-invasive blood pressure. We investigated whether pulse transit time trends could model blood pressure trends during episodes of
Sebastian Grøvdal Schaanning   +1 more
doaj   +1 more source

Pavane for a pulse pressure variation defunct

open access: yesCritical Care, 2013
Hemodynamic management of critically ill patients in the ICU or high-risk patients in the operating room has paradoxically shown progress in terms of outcome after the systematic application of volume responsiveness/flow optimization based on pulse ...
S. Søndergaard
semanticscholar   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

The role of a medium-term physical exercise program in improving cardiovascular parameters in hypertensive patients [PDF]

open access: yesBalneo and PRM Research Journal
The objective of our study was to evaluate the changes in cardiovascular parameters in patients with hypertension who completed a 3-month physical exercise program. 229 sub-jects with high normal values of blood pressure and stage 1 hypertension (group 1)
Andrei Caius Neamtu   +6 more
doaj   +1 more source

Numerical study of acoustic oscillations and combustion instabilities in solid propellant rocket [PDF]

open access: yes, 1997
A numerical analysis of unsteady motions in solid rocket motors has been conducted. A fully coupled implicit scheme based on a dual time-stepping integration algorithm has been adopted to solve the governing equations and associated boundary conditions.
Culick, F. E. C., Roh, T. S.
core  

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

open access: yesAdvanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang   +3 more
wiley   +1 more source

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