Results 101 to 110 of about 71,917 (238)

Rapid risk assessment on acute reference dose (ARfD) of cereulide in infants and information on acute consumption of infant formulae

EFSA Journal, Volume 24, Issue 2, February 2026.
Abstract EFSA has received a request for a rapid risk assessment for cereulide from the European Commission. Cereulide is a heat‐stable emetic toxin produced by Bacillus cereus, recently detected in infant formulae from multiple manufacturers. This led to precautionary recalls across several countries.
European Food Safety Authority (EFSA), Chantra Eskes, José Cortiñas‐Abrahantes, Bernard Bottex, Jean‐Lou C. M. Dorne, Bruno Dujardin, Rita Ferreira de Souza, Zsuzsanna Horvath, Eirini Kouloura, Luisa Ramos Bordajandi, Valentina Rizzi, Hans Steinkellner, Mary Gilsenan   +12 more
wiley   +1 more source

Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces

Қарағанды университетінің хабаршысы. Математика сериясы
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered.
N.A. Abiev
doaj   +1 more source

RICCI CURVATURE DECAY ON OPEN MANIFOLDS [PDF]

Bulletin of the London Mathematical Society, 2003
Let \(M\) be a complete, non-compact Riemannian manifold of dimension \(n\) and let \(\gamma(t)\), \(t\geq 0\) be a ray in \(M\). The author focusses on the behavior of the Ricci curvature along this ray. His main theorem is as follows: Suppose \(\text{Ric} (\dot\gamma (t))\geq 0\) for all \(t\). For \(\delta>0\), let \(I_\delta= \{t>0:\text{Ric} (\dot
openaire   +2 more sources

Augmentations of Forman’s Ricci curvature and their applications in community detection

Journal of Physics: Complexity
The notion of curvature on graphs has recently gained traction in the networks community, with the Ollivier–Ricci curvature (ORC) in particular being used for several tasks in network analysis, such as community detection.
Lukas Fesser, Sergio Serrano de Haro Iváñez, Karel Devriendt, Melanie Weber, Renaud Lambiotte   +4 more
doaj   +1 more source

Certain results on tangent bundle endowed with generalized Tanaka Webster connection (GTWC) on Kenmotsu manifolds

AIMS Mathematics
This work studies the complete lifts of Kenmotsu manifolds associated with the generalized Tanaka-Webster connection (GTWC) in the tangent bundle.
Rajesh Kumar , Sameh Shenawy , Lalnunenga Colney, Nasser Bin Turki   +3 more
doaj   +1 more source

η-Ricci Solitons on Sasakian 3-Manifolds

Annals of the West University of Timisoara: Mathematics and Computer Science, 2017
In this paper we study η-Ricci solitons on Sasakian 3-manifolds. Among others we prove that an η-Ricci soliton on a Sasakian 3-manifold is an η-Einstien manifold.
Majhi Pradip, De Uday Chand, Kar Debabrata   +2 more
doaj   +1 more source

Quantizing quantum Ricci curvature

, 2018
15 pages, 7 ...
Klitgaard, N., Loll, R.
openaire   +2 more sources

On manifolds with non-negative Ricci curvature and Sobolev inequalities [PDF]

, 1999
Michel Ledoux
openalex   +1 more source

Curvature cones and the Ricci flow. [PDF]

Séminaire de théorie spectrale et géométrie, 2014
This survey reviews some facts about nonnegativity conditions on the curvature tensor of a Riemannian manifold which are preserved by the action of the Ricci flow. The text focuses on two main points.First we describe the known examples of preserved curvature conditions and how they have been used to derive geometric results, in particular sphere ...
openaire   +2 more sources

On the equivalence of two curvature conditions for Lorentzian hypersurfaces

Arab Journal of Mathematical Sciences, 2017
Let n≥3. We show that semi-symmetry and Ricci-semisymmetry conditions are equivalent for any n-dimensional Lorentzian hypersurface in a Lorentzian space form with nonzero curvature.
Mohammed Guediri, Norah Alshehri
doaj   +1 more source