Results 41 to 50 of about 664,134 (330)

Comparison of Contamination of Low-Frictional Elastomeric Rings with That of Conventional Elastomeric Rings by Streptococcus mutans - An In-vivo Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Introduction: The presence of brackets and ligatures has been shown to be related to an increase in gingival inflammation and increased risk of decalcification. The various measures were taken to reduce the plaque accumulation and also lot of efforts
Sumanth Rangarajan   +4 more
doaj   +1 more source

Zero-divisor graphs of reduced Rickart *-rings

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
For a ring A with an involution *, the zero-divisor graph of A, Γ*(A), is the graph whose vertices are the nonzero left zero-divisors in A such that distinct vertices x and y are adjacent if and only if xy* = 0.
Patil A.A., Waphare B.N.
doaj   +1 more source

On orthogonal completion of reduced rings [PDF]

open access: yesPacific Journal of Mathematics, 1983
It is known that the relation \(a\leq b\) if \(a\cdot b=a^ 2\) defined for reduced rings R (rings with no nonzero nilpotent elements) makes R into a partially ordered multiplicative semigroup. A subset X of R is called an orthogonal subset of R if for x,\(y\in X\), \(x\neq y\) implies \(x\cdot y=0\).
openaire   +3 more sources

Electron-transport properties of ethyne-bridged diphenyl zinc-porphyrin molecules

open access: yes, 2015
We investigate the electron-transport properties of ethyne-bridged diphenyl zinc-porphyrin molecules suspended between gold (111) electrodes by first-principles calculations within the framework of density functional theory.
Nguyen, Huy Duy, Ono, Tomoya
core   +1 more source

Communication and Language Profiles of Children Treated for Posterior Fossa Brain Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cognitive and language deficits are frequently reported sequelae of posterior fossa brain tumors (PFBT). Typically, delayed onset impedes prompt assessment and early intervention. This has devastating implications for quality of life.
Zara Sved   +4 more
wiley   +1 more source

Multiplicative Structure and Hecke Rings of Generator Matrices for Codes over Quotient Rings of Euclidean Domains

open access: yesMathematics, 2017
In this study, we consider codes over Euclidean domains modulo their ideals. In the first half of the study, we deal with arbitrary Euclidean domains.
Hajime Matsui
doaj   +1 more source

Analysis and Evaluation of Strengthening Effect of Inflatable Rings on Soft Stratospheric Airship

open access: yesTaiyuan Ligong Daxue xuebao, 2023
Purposes The research on advanced stratospheric airships in China is mainly at the conceptual design stage, lacking specific mechanical performance evaluation to promote their development.
Tiane LI   +4 more
doaj   +1 more source

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware   +13 more
wiley   +1 more source

Anillos separables, de baer y pp-anillos

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2009
Keimel introduced the notion of proyectability in the class of lattice-ordered rings and f-rings in [5]. Here we introduce a similar notion forgeting the lattice and ordered structure of the ring and interpretating the orthogonality within the ...
Jorge I. Guier
doaj   +1 more source

A Class of W-Algebras with Infinitely Generated Classical Limit

open access: yes, 1993
There is a relatively well understood class of deformable W-algebras, resulting from Drinfeld-Sokolov (DS) type reductions of Kac-Moody algebras, which are Poisson bracket algebras based on finitely, freely generated rings of differential polynomials in ...
A. Honecker   +32 more
core   +1 more source

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