Results 51 to 60 of about 221 (141)

COVID‐19 Vaccine Effectiveness Against Hospitalization in Older Adults, VEBIS Hospital Network, Europe, September 2024–May 2025

open access: yesInfluenza 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

How Deep in Time and Far in Space: Multiproxy Geophysical, Coring and Geochemical Prospection of an (Not Only) Iron Age Village (Ebro Valley, Navarre)

open access: yesArchaeological 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

Diversity Hotspots and Vulnerability of Pine Species in the Sierra Madre Occidental, Western Mexico

open access: yesEcology and Evolution, Volume 15, Issue 7, July 2025.
The present study employs a modeling approach to examine the current and future distribution of 19 pine species in the Sierra Madre Occidental, Mexico. This was done in order to identify areas with high potential for pine species richness and to determine which species are at risk due to climate change under different projections.
Lizeth Ruacho‐González   +5 more
wiley   +1 more source

Rupture and Relamination of Continental Lithosphere in a Subduction System (Variscan Orogeny, SW Iberia)

open access: yesTectonics, Volume 44, Issue 7, July 2025.
Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández   +7 more
wiley   +1 more source

Armendariz property for skew PBW extensions and their classical ring of quotients

open access: yesRevista Integración, 2016
Consideramos un primer a er amiento a la no ión de anillo de Armendariz para una extensión tor ida de Poin aré-Birkhoff-Witt (PBW), y su anillo lási o de o ientes.
Armando Reyes, Héctor Suárez
doaj  

On power Armendariz rings

open access: yesGulf Journal of Mathematics, 2015
The study of Armendariz rings was initiated by Rege and Chhawchharia, based on a result of Armendariz related to the structure of reduced rings. Recently, Armendariz rings were generalized to power Armendariz rings in [12, 18]. We investigate the transfer of the power Armendariz property to subring retracts, trivial ring extensions, finite direct ...
openaire   +1 more source

Quasi-Armendariz rings relative to a monoid

open access: yesJournal of Pure and Applied Algebra, 2007
Let \(M\) be a monoid. An associative ring \(R\) with an identity is called \(M\)-quasi-Armendariz if for any two elements \(a=a_1g_1+\cdots+a_ng_n\) and \(b=b_1h_1+\cdots+b_kh_k\), \(a_i,b_j\in R\), \(g_i,h_j\in M\), of the semigroup ring \(R[M]\) such that \(aR[M]b=0\) it follows that \(a_iRb_j=0\) for all \(i,j\).
openaire   +2 more sources

Potential of Nanocellulose as a Dietary Fiber Isolated from Brewer's Spent Grain. [PDF]

open access: yesPolymers (Basel), 2023
Morales-Juárez AA   +3 more
europepmc   +1 more source

Volatile Organic Compounds Produced by Kosakonia cowanii Cp1 Isolated from the Seeds of Capsicum pubescens R & P Possess Antifungal Activity. [PDF]

open access: yesMicroorganisms, 2023
Hernández Flores JL   +14 more
europepmc   +1 more source

Armendariz ring with weakly semicommutativity

open access: yes, 2016
In this article, we introduce the weak ideal-Armendariz ring which combines Armendariz ring and weakly semicommutative properties of rings. In fact, it is a generalisation of an ideal-Armendariz ring. We investigate some properties of weak ideal Armendariz rings and prove that R is a weak ideal-Armendariz ring if and only if R[x] is weak ideal ...
Singh, Sushma, Prakash, Om
openaire   +2 more sources

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