Results 21 to 30 of about 355,905 (327)

The substituent effects on the 13c chemical shifts of the azomethine carbon atom of n-(phenyl substituted) salycilaldimines [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
The Hammett correlations between 13C-NMR chemical shifts of the azomethine carbon atom and the corresponding substituent constants for thirtheen Schiff bases were established.
Drmanić Saša Ž.   +3 more
doaj   +1 more source

Remarks on rings of constants of derivations [PDF]

open access: yesProceedings of the American Mathematical Society, 1989
Let k k be a field of characteristic p > 0 p > 0 and D ≠ 0 D \ne 0 a family of k k -derivations of k [ x , y ] k[x,y] . We prove that k [
openaire   +1 more source

Influence of Growth Ring Number and Width on Elastic Constants of Poplar

open access: yesBioResources, 2023
The objective of this work was to evaluate the effect of growth ring number (specimens including 2, 4, and 6 rings from the bark) and growth ring width on elastic constants in the radial direction of Populus x canadensis, which has not been revealed ...
Murat Aydın, Tuğba Yılmaz Aydın
doaj   +2 more sources

The topological symmetric orbifold

open access: yesJournal of High Energy Physics, 2020
We analyze topological orbifold conformal field theories on the symmetric product of a complex surface M. By exploiting the mathematics literature we show that a canonical quotient of the operator ring has structure constants given by Hurwitz numbers ...
Songyuan Li, Jan Troost
doaj   +1 more source

The Structural Design of a Complete Band Gap using Non-Uniform Photonic Crystals with Low Index Material

open access: yesMajlesi Journal of Electrical Engineering, 2023
This study presents a photonic bandgap formation in a non-uniform 2D photonic crystal structure with low index rods relative to the air background. In order to find an absolute photonic band gap formation, photonic lattices of two non-uniform square and ...
Seyed Mohammad Zare   +3 more
doaj   +1 more source

The fusion algebra of bimodule categories [PDF]

open access: yes, 2007
We establish an algebra-isomorphism between the complexified Grothendieck ring F of certain bimodule categories over a modular tensor category and the endomorphism algebra of appropriate morphism spaces of those bimodule categories.
A. Joyal   +30 more
core   +1 more source

Study on polarized piezoceramics constant techniques definition (Part 2)

open access: yesAdvanced Engineering Research, 2017
Introduction. The complete set of all ten electro-elastic moduli of the polarized ceramics essential for the analysis of piezoceramic sensing elements of various devices under the numerical solution to boundary value problems by the finite element method
Victor V. Madorsky
doaj   +1 more source

The AdS 3 × S 1 chiral ring

open access: yesJournal of High Energy Physics, 2021
We study AdS 3 × S 1 × Y supersymmetric string theory backgrounds with Neveu-Schwarz-Neveu-Schwarz flux that are dual to N $$ \mathcal{N} $$ = 2 superconformal theories on the boundary. We classify all worldsheet vertex operators that correspond to space-
Sujay K. Ashok, Songyuan Li, Jan Troost
doaj   +1 more source

Investigating the impact of chemical structures on the photocatalytic degradation rates over ZnO nanorods: An oxidative pathways perspective

open access: yesCatalysis Communications, 2023
Zinc oxide (ZnO) nanorods were coated on glass substrates and used as photocatalysts to evaluate the kinetic behavior of three different aromatic structures: i) single aromatic ring (phenol), ii) poly-aromatic ring (methylene blue), and iii) complex ...
Elie A. Daher   +3 more
doaj   +1 more source

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