Results 11 to 20 of about 414,156 (339)
Petroleum, 2022 The effects of the number of imidazoline ring and the length of alkyl group chain of imidazoline derivatives were investigated using quantum chemical calculation, molecular dynamics simulation and experimental techniques.
Chenfeng Zhang +5 more
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(2RS)-3-(4-Hydroxyphenyl)-2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)propanoic acid monohydrate [PDF]
, 2007 The title compound, C₁₇H₁₅NO₄·H₂O, derived from DL-tyrosine crystallizes as an unusual hydrogen-bonded acid-monohydrate dimer. The asymmetric unit contains two organic molecules and two water molecules.
Brady, Fiona, Gallagher, John F.
core +1 more source
Some Constacyclic Codes over Finite Chain Rings [PDF]
, 2012 For $\lambda$ an $n$-th power of a unit in a finite chain ring we prove that $\lambda$-constacyclic repeated-root codes over some finite chain rings are equivalent to cyclic codes. This allows us to simplify the structure of some constacylic codes.
Batoul, Aicha +2 more
core +1 more source
Constacyclic Codes over Finite Chain Rings of Characteristic p
Axioms, 2021 Let R be a finite commutative chain ring of characteristic p with invariants p,r, and k. In this paper, we study λ-constacyclic codes of an arbitrary length N over R, where λ is a unit of R.
Sami Alabiad, Yousef Alkhamees
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On-the-fly ab initio semiclassical dynamics: Identifying degrees of freedom essential for emission spectra of oligothiophenes [PDF]
, 2014 Vibrationally resolved spectra provide a stringent test of the accuracy of theoretical calculations. We combine the thawed Gaussian approximation (TGA) with an on-the-fly ab initio (OTF-AI) scheme to calculate the vibrationally resolved emission spectra ...
Sulc, Miroslav +2 more
core +2 more sources
Bicyclonucleosides and Ring-Chain Interconversion
Nucleosides and Nucleotides, 1999 Four types of bicyclonucleosides differing in the easiness of their ring-chain interconversion have been prepared, some exhibited anti-HIV activity and the ratio of their cyclic and open-chain forms could have some bearing on their biological activity.
Tronchet, Jean Marcel Julien +8 more
openaire +3 more sources
2-(2,4-Dinitrophenyl)-1-(pyridin-4-yl)ethanol monohydrate
IUCrData, 2021 In the title compound, C13H11N3O5·H2O, the dihedral angle between the aromatic rings is 9.60 (7)° and the chain linking the rings has an anti conformation with a torsion angle of −178.28 (12)°. In the crystal, the components are linked by O—H...O and O—H.
Houshi Huang, Zhichao Wu
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Rings with annihilator chain conditions and right distributive rings [PDF]
Proceedings of the American Mathematical Society, 1993 We prove that if a right distributive ring R R , which has at least one completely prime ideal contained in the Jacobson radical, satisfies either a.c.c or d.c.c. on principal right annihilators, then the prime radical of R R is the right singular ideal of R R and is completely prime and nilpotent ...
Ferrero, Miguel, Törner, Günter
openaire +2 more sources
New azobenzene liquid crystal with dihydropyrazole heterocycle and photoisomerization studies [PDF]
Royal Society Open Science, 2020 New azobenzene derivatives with dihydropyrazole heterocycle have been prepared and characterized. According to thermal polarizing microscopy and differential scanning calorimetry studies, the compounds consisting of four linearly linked rings and a long ...
Xiaoxuan Wang +3 more
doaj +1 more source
Determinants of some special matrices over commutative finite chain rings
Special Matrices, 2020 Circulant matrices over finite fields and over commutative finite chain rings have been of interest due to their nice algebraic structures and wide applications. In many cases, such matrices over rings have a closed connection with diagonal matrices over
Jitman Somphong
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