Results 31 to 40 of about 86,016 (287)

Minimal reversible nonsymmetric rings [PDF]

Journal of Pure and Applied Algebra, 2019
Marks showed that $\mathbb{F}_2Q_8$, the $\mathbb{F}_2$ group algebra over the quaternion group, is a reversible nonsymmetric ring, then questioned whether or not this ring is minimal with respect to cardinality. In this work, it is shown that the cardinality of a minimal reversible nonsymmetric ring is indeed 256.
openaire   +2 more sources

Aqueous extraction of limonin from Citrus reticulate Blanco

Czech Journal of Food Sciences, 2012
The replacement of organic solutions in the extraction of limonin from citrus seeds with an alkaline solution was investigated. This method was based on the reversible conversion of limonin to limonoate A-ring lactone via ring-opening of D-ring lactone ...
Can Liu, Jing Liu, Yonghai Rong, Nvyong Liang, Long Rong   +4 more
doaj   +1 more source

Nil-reversible rings

, 2021
This paper introduces and studies nil-reversible rings wherein we call a ring R nil-reversible if the left and right annihilators of every nilpotent element of R are equal. Reversible rings (and hence reduced rings) form a proper subclass of nil-reversible rings and hence we provide some conditions for a nil-reversible ring to be reduced.
Subba, Sanjiv, Subedi, Tikaram
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Enantiomers of 2,2?-Spirobichromenes: Energy Barrier for Thermal Racemization during HPLC on Tribenzoylcellulose

CHIMIA, 1990
As a first case in the field of spirochromenes, the energy barrier for thermally reversible ring opening of 2,2?-spirobichromenes (Scheme) is measured by racemization of preparatively enriched enantiomers.
Barbara Stephan, Herbert Zinner, Fritz Kastner, Albrecht Mannschreck   +3 more
doaj   +5 more sources

Crystal Structure of LSD1 in Complex with 4-[5-(Piperidin-4-ylmethoxy)-2-(p-tolyl)pyridin-3-yl]benzonitrile

Molecules, 2018
Because lysine-specific demethylase 1 (LSD1) regulates the maintenance of cancer stem cell properties, small-molecule inhibitors of LSD1 are expected to be useful for the treatment of several cancers.
Hideaki Niwa, Shin Sato, Tomoko Hashimoto, Kenji Matsuno, Takashi Umehara   +4 more
doaj   +1 more source

Reversibles elements in rings

Journal of Algebra Combinatorics Discrete Structures and Applications, 2017
Summary: We study some properties related to zero divisors and reversibility in noncommutative rings.
openaire   +4 more sources

Reversibility of Rings with Respect to the Jacobson Radical

Mediterranean Journal of Mathematics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Calci, Mete Burak, Chen, Huanyin, Halicioglu, Sait, Harmanci, Abdullah   +3 more
openaire   +3 more sources

The D-ring, Not the A-ring, Rotates in Synechococcus OS-B' Phytochrome

, 2014
Phytochrome photoreceptors in plants and microorganisms switch photochromically between two states, controlling numerous important biological processes.
Psakis, Georgios, Psakis, G., Hughes, J., Lang, C., Matysik, J., Song, C., Kopycki, J.   +6 more
core   +1 more source

On reversibility problem in DNA bases over a class of rings

Applied Mathematics in Science and Engineering
Let [Formula: see text] be a non-chain ring of characteristic 4, where [Formula: see text] and [Formula: see text]. In this article, we discuss reversible cyclic codes of odd lengths over the ring [Formula: see text].
Amal S. Alali, Mohammad Ashraf, Washiqur Rehman, Ghulam Mohammad, Mohd Asim   +4 more
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Influence of Chemical Structure of Some Flavonols on Their Electrochemical Behaviour

International Journal of Electrochemical Science, 2017
The electrochemical behaviour of three structurally related flavonols, quercetin, morin, and rutin was studied by cyclic, differential pulse, and square-wave voltammetry methods.
Marijan Šeruga, Ivana Tomac
doaj   +1 more source