Results 111 to 120 of about 127,524 (304)
Commuting additive maps and some related maps on triangular matrices / Tan Li Yin
, 2022 Let F be a ring with identity and let n ⩾ 2 be an integer. Denote by Tn(F) the ring of n_n upper triangular matrices over F with centre Z(Tn(F)) and unity In. Let 1 ⩽ i ⩽ j ⩽ n be integers and let Eij 2 Tn(F) denote the standard matrix unit whose (i, j)
Tan , Li Yin
core
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
On Flexible finite polygenic models for multiple-trait evaluation
, 2002 Finite polygenic models (FPM) might be an alternative to the infinitesimal model (TIM) for the genetic evaluation of pedigreed multiple-generation populations for multiple quantitative traits.
Bink, M.C.A.M.
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Additivity of multiplicative maps on triangular rings
Linear Algebra and its Applications, 2011 A bijective map \(\sigma\) between rings is called an \(n\)-isomorphism if it satisfies \((x_1x_2\cdots x_n)^\sigma=x_1^\sigma x_2^\sigma\cdots x_n^\sigma\). Analogously one defines \(n\)-multiplicative derivations and \(n\)-elementary maps. Under certain technical restrictions it is shown that these maps are automatically additive on triangular rings.
openaire +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
New Results about Quadratic Functional Equation on Semigroups
Annales Mathematicae SilesianaeLet S be a semigroup, let (H, +) be a uniquely 2-divisible, abelian group and let φ, ψ be two endomorphisms of S that need not be involutive. In this paper, we express the solutions f : S → H of the following quadratic functional equation f(xφ(y))+f(ψ(y)
Akkaoui Ahmed, Fadli Brahim
doaj +1 more source
Additive maps on rings behaving like derivations at idempotent-product elements
, 2011 For every ring R with the unit I containing a nontrivial idempotent P, we describe the additive maps δ from R into itself which behave like derivations, and show that derivations on such kinds of rings can be determined by the action on the elements A,B ...
Hou, Jinchuan +3 more
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FEBS Letters, EarlyView.Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura +2 more
wiley +1 more source
Digital 3D defect maps: detecting localised porosity with high-speed melt pool imaging data in LPBF
Adoption of metal additive manufacturing for critical applications is hindered by the costs of post-build quality inspection. In-process monitoring offers a promising alternative by enabling parallel construction of digital 3Ddefect maps for every ...
Taylor, Patrick L +5 more
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Additive mappings on symmetric matrices
Linear Algebra and its Applications, 2006 Let \(F_1\) and \(F_2\) be two fields and let \(S_n(F_1)\) and \(S_n(F_2)\) be the set of symmetric matrices over \(F_1\) and \(F_2\), respectively. A mapping \(\Phi: S_n(F_1)\to S_n(F_2)\) is called additive if \(\Phi(A+B)=\Phi(A)+\Phi(B)\). It is said that \(\Phi\) doesn't increase rank-one if \(rk(\Phi(A))\leq1\) whenever \(rk(A)=1\). \textit{M.
Kuzma, Bojan, Orel, Marko
openaire +2 more sources