Results 21 to 30 of about 4,103 (198)

Qualitative analysis and iterative approximation of the Laplace equation with exponential Robin boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
This paper investigates an elliptic boundary value problem involving the Laplace equation on the unit disk in two-dimensional space, subject to a nonlinear exponential Robin boundary condition on a portion of the boundary.
Chokri Elhechmi   +2 more
doaj   +1 more source

Building some symmetric Laguerre-Hahn functionals of class two at most through the sum of symmetric functionals as pseudofunctions with a Dirac measure at origin

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We show that if v is a symmetric regular Laguerre-Hahn linear form (functional), then the linear form u defined by u=−λx−2v+δ0 is also regular and symmetric Laguerre-Hahn linear form for every complex λ except for a discrete set of numbers depending ...
M. Sghaier, J. Alaya
doaj   +1 more source

Solar Photocatalytic Activity of Ba-Doped ZnO Nanoparticles: The Role of Surface Hydrophilicity

open access: yesNanomaterials, 2023
Bare zinc oxide (ZnO) and Ba-doped ZnO (BZO) samples were prepared by using a simple precipitation method. The effects of Barium doping on the structural, morphological, and optoelectronic properties, as well as on the physico-chemical features of the ...
Abdessalem Hamrouni   +6 more
doaj   +1 more source

Impact of industrial phosphate waste discharge on the marine environment in the Gulf of Gabes (Tunisia).

open access: yesPLoS ONE, 2018
The marine environment in the Gulf of Gabes (southern Tunisia) is severely impacted by phosphate industries. Nowadays, three localities, Sfax, Skhira and Gabes produce phosphoric acid along the coasts of this Gulf and generate a large amount of ...
Akram El Kateb   +5 more
doaj   +1 more source

Response surface methodology (RSM) for biodiesel production from waste cooking oil: Study of fatty acid methyl ester (FAME) yield

open access: yesRevue des Énergies Renouvelables, 2022
The paper aims to improve biodiesel production from used cooking oils using response surface methodology (RSM). The influence of important factors on biodiesel yield has been investigated by employing a 5-level-3-factor central composite design (CCD ...
Nejib Hidouri, Mawaheb Mouftahi
doaj   +1 more source

Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes

open access: yesAngewandte Chemie, EarlyView.
A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen   +7 more
wiley   +2 more sources

Gabès [PDF]

open access: yes, 2012
Ville littorale de la Tunisie méridionale, Gabès est située à 120 km au sud de Sfax sur un socle rocheux qui s’étend entre la Méditerranée et le Chott Fedj-Fedj.
Agabi, C.
core   +3 more sources

Multi-Power System Electrical Source Fault Review

open access: yesEnergies
The phrase “Multi-Power System (MPS)” refers to an application that combines different energy conversion technologies to meet a specific energy need. These integrated power systems are rapidly being lauded as essential for future decarbonized grids to ...
Mariem Hadj Salem   +4 more
doaj   +1 more source

A New Bioactive Glass‐Based Hybrid Bioink With Enhanced Cell Viability and Antibacterial Properties

open access: yesAdvanced Healthcare Materials, EarlyView.
Graphical illustration of the production and characterization process, demonstrating the multiple functions of the new hybrid gelatin methacryloyl‐silver‐bioactive glass (GAB) material. Created in https://BioRender.com. ABSTRACT Recent advances in three‐dimensional bioprinting (3DBP) technology enable the production of customized bone substitutes ...
Adam C. Marsh   +14 more
wiley   +1 more source

Chiral Fjord‐Edged Nanographenes Constructed by Allylic‐Migration‐Mediated Cyclization

open access: yesAngewandte Chemie, EarlyView.
A novel allylic‐migration‐mediated cyclization strategy enables the construction of two fjord‐edged nanographenes without steric blocking groups. The resulting non‐planar molecules exhibit remarkable chiroptical properties, with an absorption dissymmetry factor surpassing those of pristine [5]helicene and previously reported fjord‐edged nanographenes ...
Zhen‐Lin Qiu   +7 more
wiley   +2 more sources

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