Results 31 to 40 of about 282,224 (281)

Crystal structure and DFT study of (E)-N-[2-(1H-indol-3-yl)ethyl]-1-(anthracen-9-yl)methanimine

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C25H20N2, (I), was synthesized from the condensation reaction of anthracene-9-carbaldehyde and tryptamine in dry ethanol. The indole ring system (r.m.s.
Md. Serajul Haque Faizi   +3 more
doaj   +1 more source

Additive unit structure of endomorphism rings and invariance of modules [PDF]

open access: yes, 2016
We use the type theory for rings of operators due to Kaplansky to describe the structure of modules that are invariant under automorphisms of their injective envelopes. Also, we highlight the importance of Boolean rings in the study of such modules. As a
P. A. G. Asensio   +2 more
semanticscholar   +1 more source

Complex fermatean neutrosophic graph and application to decision making

open access: yesDecision Making: Applications in Management and Engineering, 2023
A new growing area of neutrosophic set (NS) theory called complex neutrosophic sets (CNS) provides useful tools for dealing with uncertainty in complex valued physical variables that are observed in the actual world.
S. Broumi   +5 more
semanticscholar   +1 more source

Plasmon-induced transparency in ring-bar meta-atom

open access: yesAIP Advances, 2018
We introduce an approach for constructing a scalable metamaterial structure, which is composed of a ring and a bar in a unit cell, and supports singular plasmon-induced transparency. The composite multilayered structure consists of coupled meta-atom with
Wan-Xia Huang   +5 more
doaj   +1 more source

Coupled cell networks: Boolean perspective

open access: yesBiomath, 2017
During the 1980s and early 1990s, Martin Golubitsky and Ian Stewart  formulated and developed a theory of "coupled cell networks" (CCNs). Their research was primarily focused onquadrupeds' gaits and they applied the framework of differential equations ...
Katarzyna Swirydowicz
doaj   +1 more source

Precise Design and Deliberate Tuning of Turn-On Fluorescence in Tetraphenylpyrazine-Based Metal−Organic Frameworks

open access: yesResearch, 2022
The manipulation on turn-on fluorescence in solid state materials attracts increasing interests owing to their widespread applications. Herein we report how the nonradiative pathways of tetraphenylpyrazine (TPP) units in metal−organic frameworks (MOFs ...
He-Qi Zheng   +6 more
doaj   +1 more source

Algebraic Structures and Combinatorial Properties of Unit Graphs in Rings of Integer Modulo with Specific Orders

open access: yesEIGEN MATHEMATICS JOURNAL
Unit graph is the intersection of graph theory and algebraic structure, which can be seen from the unit graph representing the ring modulo n in graph form. Let R be a ring with nonzero identity.
Sahin Two Lestari   +3 more
semanticscholar   +1 more source

Ring opening of 2-aza-3-borabicyclo[2.2.0]hex-5-ene, the Dewar form of 1,2-dihydro-1,2-azaborine: stepwise versus concerted mechanisms

open access: yesBeilstein Journal of Organic Chemistry, 2013
The ring opening of the Dewar form of 1,2-dihydro-1,2-azaborine, 2-aza-3-borabicyclo[2.2.0]hex-5-ene (3) is investigated by theoretical methods by using multiconfiguration SCF (CASSCF) and coupled cluster theory [CCSD(T)] with basis sets up to polarised ...
Holger F. Bettinger, Otto Hauler
doaj   +1 more source

Crystal structure, Hirshfeld surface analysis and DFT study of (2Z)-2-(2,4-dichlorobenzylidene)-4-[2-(2-oxo-1,3-oxazolidin-3-yl)ethyl]-3,4-dihydro-2H-1,4-benzothiazin-3-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C20H16Cl2N2O3S, is built up from a dihydrobenzothiazine moiety linked by –CH– and –C2H4– units to 2,4-dichlorophenyl and 2-oxo-1,3-oxazolidine substituents, where the oxazole ring and the heterocyclic portion of the ...
Brahim Hni   +6 more
doaj   +1 more source

Crystal structure and optical properties of fused-ring chalcone (E)-3-(anthracen-9-yl)-1-(4-nitrophenyl)prop-2-en-1-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C23H15NO3, adopts an s-cis conformation with respect to the ethylene C=C and carbonyl C=O double bonds in the enone unit. The molecule is significantly twisted with a dihedral angle of 48.63 (14)° between the anthracene ring system ...
Muhamad Fikri Zaini   +3 more
doaj   +1 more source

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