Results 91 to 100 of about 14,865,566 (335)

Global Stability of Dynamic Systems of High Order

Symmetry, Integrability and Geometry: Methods and Applications, 2007
This paper deals with global asymptotic stability of prolongations of flows induced by specific vector fields and their prolongations. The method used is based on various estimates of the flows.
Mohammed Benalili, Azzedine Lansari
doaj  

On the partial parallelizable manifolds and associated invariants

Annals of the West University of Timisoara: Mathematics and Computer Science
Our idea is to use the global diffeomorphism group G (M) to study certain properties of differentiable manifolds endowed with global vector fields. We define a partial parallelizable manifold (p.p.m.) as a couple (M, ρp), where ρp is a global partial ...
Apreutesei Costache
doaj   +1 more source

$\phi({\rm Ric})$-vector fields in Riemannian spaces

, 2008
summary:In this paper we study vector fields in Riemannian spaces, which satisfy $\nabla \varphi =\mu $, ${\textbf{Ric}}$, $\mu =\mbox {const.}$ We investigate the properties of these fields and the conditions of their coexistence with concircular vector
Kiosak, Volodymyr A., Hinterleitner, Irena   +1 more
core   +1 more source

Mutant p53R273H disrupts PDPK1 homodimerization and contributes to PDPK1 activation

Molecular Oncology, EarlyView.
How mutant p53R273H drives AKT signaling is unclear. We show that p53R273H, but not wild‐type, directly binds PDPK1 via a mutation‐dependent conformational change. This interaction disrupts inhibitory PDPK1 homodimerization and enhances AKT phosphorylation.
Mei Chee Lim, Alvin Kunyao Guo, Yoko Itahana, Srinivasaraghavan Kannan, Valerie Goh, Mingmin Ong, Terina Yan Wen Tay, Weiying Ye, Sabhashina Radha Krishnan, Jun Nishiyama, Chandra S Verma, Koji Itahana   +11 more
wiley   +1 more source

Targeting the EpCAM‐AXL axis to overcome drug resistance in lung cancer

Molecular Oncology, EarlyView.
Lung cancer cells often evade therapy by hijacking signaling pathways. We reveal that cleaved EpCAM (sEpCAM) stabilizes the oncogenic protein AXL, driving NF‐κB and STAT3‐mediated chemoresistance. This EpCAM‐AXL axis identifies a high‐risk patient subset with poor prognosis.
Alexa Guerrero‐Alba, Mark Shacker, Timothy P. Fleming, Michael A. Smith, Ross M. Bremner, Narendra V. Sankpal   +5 more
wiley   +1 more source

The natural operators lifting vector fields to generalized higher order tangent bundles [PDF]

, 2000
summary:For natural numbers $r$ and $n$ and a real number $a$ we construct a natural vector bundle $T^{(r),a}$ over $n$-manifolds such that $T^{(r),0}$ is the (classical) vector tangent bundle $T^{(r)}$ of order $r$.
Mikulski, Włodzimierz M., Mikulski, Włodzimierz   +1 more
core   +1 more source

On related vector fields of capillary surfaces

International Journal of Mathematics and Mathematical Sciences, 1981
In this paper, some necessary and sufficient conditions are given for the related vector fields of capillary surfaces to be Killing, conformal Killing, and homothetic conformal Killing vectors in the n-dimensional domain Ω, and a construction of ...
Afet K. Özok
doaj   +1 more source

Versatile vector tools for efficient protein screening across multiple expression systems

FEBS Open Bio, EarlyView.
A unified vector toolkit enables rapid protein expression screening across E. coli, insect, and mammalian cells. A single primer pair amplifies the target gene, which is inserted into any vector via a standardized interface. This streamlined workflow eliminates repeated cloning steps, accelerating the identification of optimal expression conditions for
Zhimin Zhu, Yaqing Liu, Lei Qin, Feng Yu, Qisheng Wang, Yahui Liu   +5 more
wiley   +1 more source

Alignment of vector fields on manifolds via contraction mappings

Учёные записки Казанского университета: Серия Физико-математические науки, 2018
According to the manifold hypothesis, high-dimensional data can be viewed and meaningfully represented as a lower-dimensional manifold embedded in a higher dimensional feature space. Manifold learning is a part of machine learning where an intrinsic data
O.N. Kachan, Yu.A. Yanovich, E.N. Abramov   +2 more
doaj  

On Resolving Vector Fields

Journal of Algebra, 1997
Let \(V\) be a singular affine irreducible variety over a field \(k\) and \(\mathcal{D}\) an \(\mathcal{O}_{V}\)-module of \(k\)-linear derivations. Suppose that \(I \subset \mathcal{O}_{V}\) is an ideal such that , for the blow-up \(\tilde{V} =BL_{I}(V)\), \(\mathcal{O}_{\tilde{V}}\cdot \mathcal{D}(\mathcal{O}_{\tilde{V}})\) is locally free.
openaire   +2 more sources