Results 11 to 20 of about 232,150 (251)

A Parametric Study of Vane and Air-jet Vortex Generators [PDF]

open access: yes, 1998
An experimental parametric sturdy of vane and air-jet vortex generators in a turbulent boundary layer has been carried out. Experiments were carried out in two facilities, one with a free-stream velocity of 20 m/s and a boundary layer thickness (6) of ...
Bray, Tim P.
core   +7 more sources

Preparation of 134Cs sealed source based on WO3 adsorbent for radiometric calibration purposes [PDF]

open access: yesEgyptian Journal of Pure and Applied Science, 2021
Cesium-134 artylon sealed source based on inorganic adsorbent (as a core) was easily prepared. The sealed source was in the form of a disk constituted of two halves; base and top.
Ahmed El-Gharbawy   +3 more
doaj   +1 more source

Pristine/folate-functionalized graphene oxide as two intrinsically radioiodinated nano-theranostics: self/dual in vivo targeting comparative study

open access: yesCancer Nanotechnology, 2023
Background Nanomedicine offers great potentials for theranostic studies via providing higher efficacy and safety levels. This work aimed to develop and evaluate a new nanoplatform as a tumor theranostic probe.
Mohamed M. Swidan   +2 more
doaj   +1 more source

Control of rotorcraft retreating blade stall using air-jet vortex generators [PDF]

open access: yes, 2006
A series of low-speed wind tunnel tests were carried out on an oscillating airfoil fitted with two rows of air-jet vortex generators (AJVGs). The airfoil used had an RAE 9645 section and the two spanwise arrays of AJVGs were located at x/c=0.12 and 0.62.
Kokkalis, A.   +5 more
core   +6 more sources

Caracterización de descargas parciales en ranuras y por vibración presentadas en estatores de hidrogeneradores

open access: yesIngeniería, 2021
La confiabilidad y disponibilidad de hidrogeneradores depende en gran medida de la condición del aislamiento del devanado de estator, que está expuesto a una combinación de esfuerzos térmicos, eléctricos, ambientales y mecánicos.
Oscar Nuñez Mata   +1 more
doaj   +1 more source

On the design of state-of-the-art pseudorandom number generators by means of genetic programming [PDF]

open access: yes, 2004
Congress on Evolutionary Computation. Portland, EEUU, 19-23 June 2004The design of pseudorandom number generators by means of evolutionary computation is a classical problem. Today, it has been mostly and better accomplished by means of cellular automata
Seznec, André   +6 more
core   +1 more source

Mechanistic approach developed to estimation of exchange current density and charge transfer coefficient in lead acid batteries [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage
Understanding and accurate estimation of electrochemical parameters play a pivotal role in enhancing the performance and efficiency of electrochemical systems like batteries and fuel cells. The exchange current density and charge transfer coefficient are
Zahra Porhemmat, Farschad Torabi
doaj   +1 more source

Experimental verification of a CFD model intended for the determination of restitution coefficients used in erosion modelling

open access: yesE3S Web of Conferences, 2017
Erosion caused by solid particles transported with the steam or flue gas has a negative impact on the power unit reliability and availability. The erosion rate depends inter alia on the restitution of the particle velocity upon impact.
Hernik Bartłomiej   +3 more
doaj   +1 more source

Energy Assessment of Solar Power Plant on-Grid Bi-direction 3 KW 1 Phase

open access: yesAceh International Journal of Science and Technology, 2023
– The potential for generating electricity from solar energy as one of the renewable energies is suitable for rural areas, small populations, or communal systems. However, this type of power plant requires a high investment budget.
Andrew Joewono   +4 more
doaj   +1 more source

Possibility analysis of combustion of torrefied biomass in 140 t/h PC boiler

open access: yesE3S Web of Conferences, 2016
The study attempts to evaluate the impact of combustion of torrefied willow (Latin: Salix viminalis) and palm kernel shell (Latin: Elaeis guineensis) on the heat exchange in a 140 t/h PC boiler through an analysis of 6 cases for different boiler loads ...
Jagodzińska Katarzyna   +2 more
doaj   +1 more source

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