Results 51 to 60 of about 300,701 (162)
Obesity Reviews, Volume 27, Issue 1, Page 1-15, January 2026.ABSTRACT Introduction Mexico faces a public health crisis due to the rising prevalence of obesity and noncommunicable diseases, primarily driven by unhealthy food environments. Objective To conduct a second implementation of the Food Environment Policy Index in Mexico to assess policy implementation levels related to healthy food environments and to ...
Ana Munguía +43 more
wiley +1 more source
Idempotent McCoy Rings and Their Properties
Journal of Mathematics, Volume 2026, Issue 1, 2026.This paper introduces idempotent McCoy rings, extending McCoy rings by incorporating idempotent elements, and explores their key properties. We provide examples and a counterexample showing that not every idempotent McCoy ring is McCoy. Our results show that if B is a Boolean ring, then the upper triangular matrix ring TnB is idempotent McCoy, but this
Asma Ali +3 more
wiley +1 more source
Skew Armendariz rings and their relations [PDF]
, 2012 The theory of rings is of paramount importance in the realm of algebra, as it deals primarily with the structures required to develop other algebraic theories and their applications.
Pourtaherian, Hamideh
core +1 more source
On quasi-armendariz modules [PDF]
, 2008 In this paper, we introduce the concept of a (?-) quasi-Armendariz module, principally quasi-Baer module and syudy its some properties. In particular, we show: (1) For an ?-quasi-Armendariz module MR, MR is a principally quasi-Baer module if and only if ...
Başer, Muhittin, Koşan, Tamer Tamer
core +2 more sources
On Nilpotent Elements of Skew Polynomial Rings
Journal of Mathematical Extension, 2012 We study the structure of the set of nilpotent elements in skew polynomial ring R[x; α], when R is an α-Armendariz ring. We prove that if R is a nil α-Armendariz ring and α t = IR, then the set of nilpotent elements of R is an α-compatible subrng of ...
J. Esmaeili, E. Hashemi
doaj
Space Weather, Volume 23, Issue 11, November 2025.Abstract A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but that the southern hemisphere has dominated from Solar Cycle 22 to present.
V. M. Velasco Herrera +14 more
wiley +1 more source
Child &Family Social Work, Volume 30, Issue 4, Page 657-668, November 2025.ABSTRACT In this study, I investigated the correlations between retrospectively reported experiences of child abuse in the family‐of‐origin and exposure to community violence as adults on parental monitoring among Palestinian–Israeli parents. A sample of 760 parents (453 mothers, 59.6%) participated in the study.
Neveen Ali‐Saleh Darawshy
wiley +1 more source
Influenza and Other Respiratory Viruses, Volume 19, Issue 11, November 2025.ABSTRACT We estimated COVID‐19 vaccine effectiveness (VE) against PCR‐confirmed SARS‐CoV‐2 hospitalization in patients ≥ 60 years with severe acute respiratory infection, using a multicenter, test‐negative, case–control study across seven sites in six European countries between September 2024 and May 2025.
Madelyn Rojas‐Castro +37 more
wiley +1 more source
Archaeological Prospection, Volume 32, Issue 3, Page 562-586, July/September 2025.ABSTRACT The archaeological research carried out at Irulegi, a hilltop site on the namesake mountain (Aranguren Valley, Navarre, Spain), has revealed one of the most important examples of fortified protohistoric settlements in the western Pyrenees, characterized by its long evolution and the exceptional preservation of its remains.
Mattin Aiestaran +10 more
wiley +1 more source
The Armendariz property on ideals [PDF]
, 2012 In the present note we study the Armendariz property on ideals of rings, introducing a new concept which unifies the Armendariz property and the insertion-of-factors-property (simply, IFP) for rings.
Yun, Sang Jo, Kwak, Tai Keun, Lee, Yang
core +1 more source