Results 41 to 50 of about 427,861 (368)

Graded radical W type Lie algebras I

International Journal of Mathematics and Mathematical Sciences, 2002
We get a new ℤ-graded Witt type simple Lie algebra using a generalized polynomial ring which is the radical extension of the polynomial ring F[x] with the exponential function ex.
Ki-Bong Nam
doaj   +1 more source

Initial Steps to Engineer Coproheme Decarboxylase to Obtain Stereospecific Monovinyl, Monopropionyl Deuterohemes

Frontiers in Bioengineering and Biotechnology, 2022
The oxidative decarboxylation of coproheme to form heme b by coproheme decarboxylase is a stereospecific two-step reaction. In the first step, the propionate at position two (p2) is cleaved off the pyrrole ring A to form a vinyl group at this position ...
Hanna Michlits, Nina Valente, Georg Mlynek, Stefan Hofbauer   +3 more
doaj   +1 more source

Functional Degradable Polymers by Radical Ring-Opening Copolymerization of MDO and Vinyl Bromobutanoate: Synthesis, Degradability and Post-Polymerization Modification

Biomacromolecules, 2015
The synthesis of vinyl bromobutanoate (VBr), a new vinyl acetate monomer derivative obtained by the palladium-catalyzed vinyl exchange reaction between vinyl acetate (VAc) and 4-bromobutyric acid is reported.
Guillaume G. Hedir, Craig A. Bell, R. O’Reilly, A. P. Dove   +3 more
semanticscholar   +1 more source

Long-Term Survival of a Patient with Invasive Signet-Ring Cell Carcinoma of the Urinary Bladder Managed by Combined S-1 and Cisplatin Adjuvant Chemotherapy

Case Reports in Urology, 2013
Primary signet-ring cell carcinoma of the urinary bladder is extremely rare and patient survival is very poor. The disease usually presents at advanced stages because the cancer progresses rapidly.
Takashi Hamakawa, Yoshiyuki Kojima, Taku Naiki, Yasue Kubota, Takahiro Yasui, Keiichi Tozawa, Yutaro Hayashi, Kenjiro Kohri   +7 more
doaj   +1 more source

A Null B-Ring Improves the Antioxidant Levels of Flavonol: A Comparative Study between Galangin and 3,5,7-Trihydroxychromone

Molecules, 2018
To clarify the role of the B-ring in antioxidant flavonols, we performed a comparative study between galangin with a null B-ring and 3,5,7-trihydroxychromone without a B-ring using five spectrophotometric assays, namely, •O2−-scavenging, 1,1 ...
Xiaojian Ouyang, Xican Li, Wenbiao Lu, Xiaojun Zhao, Dongfeng Chen   +4 more
doaj   +1 more source

On rings with invariant radicals [PDF]

Bulletin of the Australian Mathematical Society, 1996
We give necessary and sufficient conditions on the semigroup S for the Jacobson radical to be S-invariant.
Andrei V. Kelarev, A. Plant
openaire   +2 more sources

Prehydrated One-Electron Attachment to Azido-Modified Pentofuranoses: Aminyl Radical Formation, Rapid H-Atom Transfer, and Subsequent Ring Opening.

Journal of Physical Chemistry B, 2017
Methyl 2-azido-2-deoxy-α-d-lyxofuranoside (1a) and methyl 2-azido-2-deoxy-β-d-ribofuranoside (2) were prepared from d-xylose or d-arabinose, respectively.
Mukesh M Mudgal, Sunny Rishi, Daniel A Lumpuy, Keaton A Curran, Kathryn Lynn Verley, Adam J. Sobczak, Thao P. Dang, Natasha Sulimoff, Anilesh Kumar, M. Sevilla, S. Wnuk, A. Adhikary   +11 more
semanticscholar   +1 more source

Effective and Novel Application of Hydrodynamic Voltammetry to the Study of Superoxide Radical Scavenging by Natural Phenolic Antioxidants

Antioxidants, 2019
The reactions of antioxidants with superoxide radical were studied by cyclic voltammetry (CV)—and hydrodynamic voltammetry at a rotating ring-disk electrode (RRDE).
Stuart Belli, Miriam Rossi, Nora Molasky, Lauren Middleton, Charles Caldwell, Casey Bartow-McKenney, Michelle Duong, Jana Chiu, Elizabeth Gibbs, Allison Caldwell, Christopher Gahn, Francesco Caruso   +11 more
doaj   +1 more source

A Bezout ring with nonzero principal Jacobson radical

Karpatsʹkì Matematičnì Publìkacìï, 2022
In this paper, we study a commutative Bezout domain with nonzero Jacobson radical being a principal ideal. It has been proved that such a Bezout domain is a ring of the stable range 1.
A.I. Gatalevych, A.A. Dmytruk
doaj   +1 more source

Reaction Path Bifurcation in an Electrocyclic Reaction: Ring-Opening of the Cyclopropyl Radical.

Journal of Physical Chemistry A, 2015
Following previous work [J. Chem. Phys. 2013, 139, 154108] on a simple model of a reaction with a post-transition state valley ridge inflection point, we study the chemically important example of the electrocyclic cyclopropyl radical ring-opening ...
Zeb C. Kramer, B. K. Carpenter, G. S. Ezra, Stephen Wiggins   +3 more
semanticscholar   +1 more source