Results 21 to 30 of about 359,552 (281)

Facile synthesis of vinyl esters of aromatic carboxylic acids with participation of 2-chloro-4,6-dimethoxy-1,3,5-triazine [PDF]

open access: yesE3S Web of Conferences, 2023
In this work, the reaction of derivatives of benzoic acid containing substituents in the aromatic ring (1a-o) with 2-chloro-4,6dimethoxy-1,3,5-triazine (4) in the presence of N-methylmorpholine (6) has been synthesized active triazine esters of ...
Parmanov A.   +3 more
doaj   +1 more source

Rings of constants of generic 4D Lotka-Volterra systems [PDF]

open access: yesCzechoslovak Mathematical Journal, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zieliński, Janusz, Ossowski, Piotr
openaire   +2 more sources

Evaluation of the true-strength characteristics for isotropic materials using ring tensile test

open access: yesNuclear Engineering and Technology, 2021
The paper proposes a technique for reconstructing the true hardening curve of isotropic materials from ring tensile tests. Neutron irradiated 42XNM alloy tensile properties were investigated.
A.S. Frolov, I.V. Fedotov, B.A. Gurovich
doaj   +1 more source

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

Determination of association constants between 5 '-guanosine monophosphate gel and aromatic compounds by capillary electrophoresis [PDF]

open access: yes, 2013
Hydro gel formed by 5'-guanosine monophosphate (GMP) in the presence of a potassium ion is expected to exhibit interesting selectivity in capillary electrophoretic separations.
Alberty   +32 more
core   +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

Prime rings with PI rings of constants

open access: yesIsrael Journal of Mathematics, 1996
20 pages, LaTex2e, to appear in Israel Journal of Mathematics, volume 96, part B, 1996 (357-377)
Kharchenko, V. K.   +2 more
openaire   +3 more sources

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

Home - About - Disclaimer - Privacy