Results 21 to 30 of about 156,828 (260)

Improving Anodizing Efficiency by Adding Different Amounts of Aluminum Powder to Anodizing Electrolyte for Pure Aluminum and Aluminum Alloy (6063) [PDF]

open access: yesEngineering and Technology Journal, 2008
Different amounts of aluminum powder (5, 7, 9 and 11g/l) were added to sulfuricacid solution of the specimens under ideal conditions previously obtained (1) and theeffect of these additions was studied to find out it's benefit on anodizing efficiency ...
Uday Sami Mohammad, Sami A. Ajeel
doaj   +1 more source

Minimization of the threshold voltage parameter of the co-doped ZnO doped liquid crystals by machine learning algorithms

open access: yesScientific Reports, 2023
This study aims to examine the influence of the co-doped semiconductor nanostructure (Al-Cu):ZnO on the electro-optical properties of the E7 coded pure nematic liquid crystal structures and minimize the threshold voltage of pure E7 liquid crystal.
Gülnur Önsal   +3 more
doaj   +1 more source

Mixed-Gas Selectivity Based on Pure Gas Permeation Measurements: An Approximate Model

open access: yesMembranes, 2021
An approximate model based on friction-coefficient formalism is developed to predict the mixed-gas permeability and selectivity of polymeric membranes. More specifically, the model is a modification of Kedem’s approach to flux coupling.
Alexander O. Malakhov   +1 more
doaj   +1 more source

The F-pure threshold of a determinantal ideal [PDF]

open access: yesBulletin of the Brazilian Mathematical Society, New Series, 2014
The $F$-pure threshold is a numerical invariant of prime characteristic singularities, that constitutes an analogue of the log canonical thresholds in characteristic zero. We compute the $F$-pure thresholds of determinantal ideals, i.e., of ideals generated by the minors of a generic matrix.
Miller, Lance E.   +2 more
openaire   +4 more sources

On some properties of polynomials rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
For a commutative ring with unity R, it is proved that R is a PF-ring if and only if the annihilator, annR(a), for each a ϵ R is a pure ideal in R, Also it is proved that the polynomial ring, R[X], is a PF-ring if and only if R is a PF-ring.
H. Al-Ezeh
doaj   +1 more source

SYARAT PERLU DAN SYARAT CUKUP SUBMODUL PURE PADA MODUL PERKALIAN

open access: yesJurnal Matematika Integratif, 2019
Modul merupakan suatu struktur aljabar yang dibentuk dari operasi pergandaan skalar antara suatu grup abelian  dan ring . Jika untuk setiap submodul  di  terdapat ideal presentasi  sedemikian hingga , maka  disebut modul perkalian.
Astrid A Titahena   +3 more
doaj   +1 more source

Bounds for the minimum distance function

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
Let I be a homogeneous ideal in a polynomial ring S. In this paper, we extend the study of the asymptotic behavior of the minimum distance function δI of I and give bounds for its stabilization point, rI, when I is an F -pure or a square-free monomial ...
Núñez-Betancourt Luis   +2 more
doaj   +1 more source

Supported Ionic Liquid Membranes and Ion-Jelly® Membranes with [BMIM][DCA]: Comparison of Its Performance for CO2 Separation

open access: yesMembranes, 2015
In this work, a supported ionic liquid membrane (SILM) was prepared by impregnating a PVDF membrane with 1-butyl-3-methylimidazolium dicyanamide ([BMIM][DCA]) ionic liquid.
Ricardo Couto   +3 more
doaj   +1 more source

Purity of the ideal of continuous functions with pseudocompact support

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
Let CΨ(X) be the ideal of functions with pseudocompact support and let kX be the set of all points in υX having compact neighborhoods. We show that CΨ(X) is pure if and only if βX−kX is a round subset of βX, CΨ(X) is a projective C(X)-module if and ...
Emad A. Abu Osba
doaj   +1 more source

Regenerative Braking Control Method Based on Predictive Optimization for Four-Wheel Drive Pure Electric Vehicle

open access: yesIEEE Access, 2021
Regenerative braking is the key to achieve efficient use of energy and extend the driving range in pure electric vehicles. This study proposes a new predictive control method integrating adaptive cubic exponential prediction and dynamic programming to ...
Junjiang Zhang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy