Results 31 to 40 of about 20,872,194 (388)

Bifurcation of Limit Cycles and Center in 3D Cubic Systems with Z3-Equivariant Symmetry

open access: yesMathematics, 2023
This paper focuses on investigating the bifurcation of limit cycles and centers within a specific class of three-dimensional cubic systems possessing Z3-equivariant symmetry.
Ting Huang   +3 more
doaj   +1 more source

A Philosophy of Moderation: The “Center” as an Interpretive Key to the Lao–Zhuang Texts

open access: yesReligions, 2023
The “center” is a key concept in early Chinese philosophy. While readings of the Laozi 老子 and Zhuangzi 莊子 often rely on concepts of “nature” and the “natural”, this article proposes the “center” as an interpretive key that informs discussion of ...
Rory O’Neill, Riccardo Peruzzi
doaj   +1 more source

Center for Devices and Radiological Health

open access: yesDefinitions, 2020
The Application Integrity Policy (AIP) focuses on the integrity of data and information in applications submitted for FDA review and approval. On September 10, 1991, the FDA published the Notice of this policy formally entitled, "Fraud, Untrue Statements

semanticscholar   +1 more source

Progress Notes : a report from the Parkinson's Disease Center at Boston University Medical Center [PDF]

open access: yes, 1991
News and updates from the Boston University Medical Center Parkinson's Disease ...
Parkinson's Disease Center at Boston University Medical Center
core   +3 more sources

Coronavirus Disease Outbreak in Call Center, South Korea

open access: yesEmerging Infectious Diseases, 2020
We describe the epidemiology of a coronavirus disease (COVID-19) outbreak in a call center in South Korea. We obtained information on demographic characteristics by using standardized epidemiologic investigation forms.
S. Park   +25 more
semanticscholar   +1 more source

Limit Cycles and Integrability of a Class of Quintic System

open access: yesMathematics, 2022
In this paper, a class of quintic systems is investigated. The first 13 focal values are computed with the aid of MATHEMATICA. Then the necessary conditions of integrability and linearizability are obtained and the sufficiency of every condition is ...
Yanli Tang, Dongmei Zhang, Feng Li
doaj   +1 more source

Center of intersection graph of submodules of a module

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
Let be a commutative ring and be a unital -module. The intersection graph of submodules of , denoted by , is the graph whose vertex set is the collection of all submodules of and in which two distinct vertices and are adjacent if and only if .
Kukil Kalpa Rajkhowa, Helen K. Saikia
doaj   +1 more source

THE DOCTRINE OF XENOPHANES FROM COLOPHON AND PARMENIDES FROM ELEA CONCERNING TEMPORAL AND SPATIAL INFINITY

open access: yesВестник Мининского университета, 2018
Introduction: the purpose of this article is to highlight the main difficulties and paradoxes, which are connected with temporal and spatial infinity and also to research their solutions in the context of the philosophy of Xenophanes from Colophon and ...
D. V. Vorobiov, E. V. Smirnova
doaj   +1 more source

The PATRIC Bioinformatics Resource Center: expanding data and analysis capabilities

open access: yesNucleic Acids Res., 2019
The PathoSystems Resource Integration Center (PATRIC) is the bacterial Bioinformatics Resource Center funded by the National Institute of Allergy and Infectious Diseases (https://www.patricbrc.org).
James J. Davis   +33 more
semanticscholar   +1 more source

Stereogenic Centers [PDF]

open access: yesMolecules, 2018
The demand for chiral organic entities for different industrial purposes has grown exponentially in the last decades. [...]
openaire   +4 more sources

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