Results 31 to 40 of about 790,255 (328)

EXPERIMENTAL STUDY OF THE PRODUCTION OF SOLAR HYDROGEN IN ALGERIA

open access: yesJournal of Fundamental and Applied Sciences, 2015
Hydrogen is a sustainable fuel option and one of the potential solutions for the current energy and environmental problems. In this study hydrogen is produced using a hydrogen generator with a Proton Exchange Membrane (PEM) electrolyser.
W. Bendaikha   +3 more
doaj   +1 more source

Visualization of Angular Particle-Bubble Surface Interaction using a High Speed Video Camera

open access: yesInternational Journal of Technology, 2016
Flotation is an important process in mining industries. This process employs the bubble and hydrophobic properties of a particle to separate valuable mining particles from impurities.
Warjito, Harinaldi, Manus Setyantono
doaj   +1 more source

Developed and Intelligent Structure of a Control for PV Water Treatment System

open access: yesEnergies, 2023
The subject of this work is a UV-irradiated water disinfection prototype intended for use in rural areas where access to water is difficult. Given the favorable climatic conditions of our country, the use of photovoltaic panels as a source of energy is ...
Naoufel Zitouni   +3 more
doaj   +1 more source

Automated Power Source Selection System for Uninterrupted Supply: Integration of Main Power, Solar Energy, and Generator Power

open access: yesJournal of Engineering Technology and Applied Sciences
A consistent power supply is indispensable across various sectors, spanning from households to critical institutions like research facilities, hospitals, and financial institutions.
K. Ukagwu, Prosper Kapalata, V. Eze
semanticscholar   +1 more source

Introduction to Cirquent Calculus and Abstract Resource Semantics

open access: yes, 2005
This paper introduces a refinement of the sequent calculus approach called cirquent calculus. While in Gentzen-style proof trees sibling (or cousin, etc.) sequents are disjoint sequences of formulas, in cirquent calculus they are permitted to share ...
Japaridze, Giorgi
core   +1 more source

Penggunaan Larutan Ekstrak Etanol Dari Temulawak Sebagai Fotosensitizer Di Dalam Pemutihan (Pengelantangan) Pulp Dengan Penyinaran Lampu [PDF]

open access: yes, 2013
Etanol extract from temulawak can used as fotosensitizer in pulp bleaching with lamp irradiating, which is in this pulp bleaching obtained singlet oxygen.
Perdana, A. (Arif)
core  

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

open access: yesAdvanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes   +4 more
wiley   +1 more source

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

open access: yesAdvanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß   +7 more
wiley   +1 more source

Flicker Vision of Selected Light Sources

open access: yesMeasurement Science Review, 2017
The results of the laboratory research concerning a dependence of flicker vision on voltage fluctuations are presented in the paper. The research was realized on a designed measuring stand, which included an examined light source, a voltage generator ...
Otomański Przemysław   +2 more
doaj   +1 more source

Automated attendance accounting system [PDF]

open access: yes, 1973
An automated accounting system useful for applying data to a computer from any or all of a multiplicity of data terminals is disclosed. The system essentially includes a preselected number of data terminals which are each adapted to convert data words of
Chapman, C. P.
core   +1 more source

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