Results 21 to 30 of about 4,560 (239)

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

Nanomaterials, 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, Marwa Moussa, Nidhal Fessi, Leonardo Palmisano, Riccardo Ceccato, Ali Rayes, Francesco Parrino   +6 more
doaj   +1 more source

Tuning Circular Dichroism and Circularly Polarised Luminescence in Single Crystals of a Perylene Diimide Macrocycle

Angewandte Chemie, EarlyView.
The circular dichroism (CD) and circularly polarised (CPL) of a bis‐perylene diimide macrocycle are measured in single crystals. These chiroptical properties are tuned by the macrocycle's π–π stacking interactions in the solid‐state. Abstract Chiral materials that manipulate circularly polarised light have burgeoning applications across optoelectronics,
Denis Hartmann, Samuel E. Penty, Artemijs Krimovs, Robert Pal, Tiberiu‐M. Gianga, Giuliano Siligardi, Timothy A. Barendt   +6 more
wiley   +2 more sources

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

Revue 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

Disentangling the pattern of geographic concentration in Tunisian manufacturing industries [PDF]

, 2014
In this paper, we examine the pattern of spatial concentration of manufacturing industries observed in Tunisia and explore the factors driving firms' choices of location at the provincial level.
Ayadi, Mohamed, Mattoussi, Wided
core   +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

International 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

Unexpected Formation of the Iodobismuthate Salt (C₁₄H₁₅S₂N₂)₂(C₉H₁₀SN)₂[Bi₄I₁₆] upon Reaction of the Unsaturated Ligand Z-PySCH₂CH=CHCH₂SPy with BiI₃

Molbank, 2023
The olefinic dithioether (Z)-1,4-bis(pyridin-2-ylthio)but-2-ene Z-PyS(CH2CH=CHCH2)SPy (L) was prepared by the treatment of cis-ClCH2CH=CHCH2Cl with in situ generated potassium pyridine-2-thiolate Py-SK and analyzed by IR and NMR spectroscopy.
Marwa Essid, Chakib Hrizi, Salah Ammar, Abderrahim Khatyr, Michael Knorr, Annika Schmidt, Carsten Strohmann   +6 more
doaj   +1 more source

Meat yield of Bolinus brandaris (Gastropoda: Muricidae): comparative assessment of the influence of sex, size and reproductive status [PDF]

, 2017
The present study assessed the influence of sex, size and reproductive status on the meat yield (soft tissues proportion) of the purple dye murex (Bolinus brandaris) from the Ria Formosa lagoon (southern Portugal).
Barroso, Carlos M., Gaspar, Miguel B., Vasconcelos, Paulo   +2 more
core   +3 more sources

Multi-Power System Electrical Source Fault Review

Energies
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, Karim Mansouri, Eric Chauveau, Yemna Ben Salem, Mohamed Naceur Abdelkrim   +4 more
doaj   +1 more source

Control of the shape and size of iron oxide (α-Fe2O3) nanoparticles synthesized through the chemical precipitation method

Results in Physics, 2017
Hematite (α-Fe2O3) nanoparticles were synthesized via a simple chemical precipitation method. The impact of varying the concentration of precursor on the crystalline phase, size and morphology of α-Fe2O3 products was explored.
Abdelmajid Lassoued, Brahim Dkhil, Abdellatif Gadri, Salah Ammar   +3 more
doaj   +1 more source

Comparative analysis of MPPT techniques for enhancing a wind energy conversion system

Frontiers in Energy Research, 2022
One of the most reliable and advanced renewable energy sources is wind energy. It is critical to harness as much wind energy as possible and maintain wind turbines operating at full capacity.
Hajer Gaied, Mohamed Naoui, Habib Kraiem, B. Srikanth Goud, Aymen Flah, Mamdouh L. Alghaythi, Hossam Kotb, Samia G. Ali, Kareem Aboras   +8 more
doaj   +1 more source