Results 11 to 20 of about 3,332 (259)

Numerical Analysis of Flow and Heat Transfer Characteristics between Two Parallel Plates with Constriction(s) [PDF]

open access: yesComputational Engineering and Physical Modeling, 2021
A numerical study involving graphical analysis has been carried out to investigate fluid flow and heat transfer between two stationary horizontal plates possessing blocks (which restricts flow).
Ishtier Rahman   +2 more
doaj   +1 more source

Importancia de la actividad experimental en la formación del docente de ciencias naturales

open access: yesMundo Fesc, 2021
This article is derived from the research "Self-authorship of intercultural texts for teaching science," conducted at the University of Santiago de Cali, Colombia.
Yovana Alexandra Grajales-Fonseca   +2 more
doaj   +1 more source

The Concept of Accuracy Analysis of the Vertical Displacements Gained from the Hydrostatic Levelling Systems’ Measurements

open access: yesSensors, 2021
Nowadays, hydrostatic levelling is a widely used method for the vertical displacements’ determinations of objects such as bridges, viaducts, wharfs, tunnels, high buildings, historical buildings, special engineering objects (e.g., synchrotron), sports ...
Waldemar Kamiński
doaj   +1 more source

‘Speckled appearance of ball and cage valve’: An unusual 2D-ECHO artifact or a sign of pathological degeneration?

open access: yesIHJ Cardiovascular Case Reports, 2020
We report an interesting but rare 2D ECHO image of a ‘ball and cage’ prosthetic mitral valve resembling a ’starry sky’ pattern, possibly secondary to degeneration of the silicon rubber ball.
Ankit Kumar Sahu, Aditya Kapoor
doaj   +1 more source

Production of hydrogen gas from biomass oil palm empty fruit bunch using electrolysis method [PDF]

open access: yesMATEC Web of Conferences, 2019
Biomass oil palm empty fruit bunch (OPEFB) is a sustainable source for hydrogen production. OPEFB and FeCl3.6H2O oxidizers (0.1, 0.2, 0.3 and 0.4 mol) were refluxed at 90-98 ° C for 5 hours.
Amri Resti Yunia   +3 more
doaj   +1 more source

Micro Coriolis mass flow censor with extended range for a monopropellant micro propulsion system [PDF]

open access: yes, 2013
We have designed and realised a micromachined micro Coriolis flow sensor for the measurement of hydrazine (N2H4, High Purity Grade) propellant flow in micro chemical propulsion systems.
Dijkstra, M.A.   +5 more
core   +10 more sources

Vibration suppression of advanced plates embedded magnetostrictive layers via various theories

open access: yesJournal of Materials Research and Technology, 2020
Vibration suppression analysis of a laminated composite plate embedded magnetostrictive layers is presented with/without the transverse shear and normal strains effects are taken into account in this study.
Ashraf M. Zenkour, Hela D. El-Shahrany
doaj   +1 more source

Bio-Friendly Alternatives for Xylene – Carrot oil, Olive oil, Pine oil, Rose oil [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Background: Xylene is a flammable liquid with characteristic petroleum or aromatic odours, it is miscible with most of the organic solvents and paraffin wax.
Sugunakar Raju Godishala Swamy   +4 more
doaj   +1 more source

Bernoulli’s principle applied to brain fluids: intracranial pressure does not drive cerebral perfusion or CSF flow [PDF]

open access: yes, 2016
In line with the first law of thermodynamics, Bernoulli's principle states that the total energy in a fluid is the same at all points. We applied Bernoulli's principle to understand the relationship between intracranial pressure (ICP) and intracranial ...
Lorthois, Sylvie   +4 more
core   +1 more source

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