Results 81 to 90 of about 430,965 (263)

An Immersion of an $n$-dimensional Real Space Form into an $n$-dimensional Complex Space Form

open access: yesTokyo Journal of Mathematics, 1986
Let \(M\) be an \(n\)-dimensional submanifold of an \(m\)-dimensional Riemannian manifold \(N\) and \(H\) be the mean curvature vector of \(M\). Let \(\zeta_ x\) be \(m-n\) mutually orthogonal unit normal vector fields of \(M\) such that \(H=| H|_{\zeta_ 1}\). The normal vector \(a(H)\) defined by \[ a(H)=(| H| /n)\sum^{m-n}_{x=2}Tr(A_ 1 A_ x)\zeta_ x \
openaire   +3 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

On the Relationship between Primal/Dual Cell Complexes of the Cell Method and Primal/Dual Vector Spaces: an Application to the Cantilever Elastic Beam with Elastic Inclusion

open access: yesCurved and Layered Structures, 2019
The Cell Method (CM) is an algebraic numerical method based on the use of global variables: the configuration, source and energetic global variables. The configuration variables with their topological equations, on the one hand, and the source variables ...
Ferretti Elena
doaj   +1 more source

People and the City. Notes on the Identity of Siberian Cities

open access: yesПроект Байкал, 2014
The article reveals a complex and multicomponent identity of a Siberian city. Special attention is paid to the history of foundation of Siberian cities and ethnic identity of citizens.
Anna Sirina
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Recovering complex ecological dynamics from time series using state-space universal dynamic equations

open access: yesCommunications Earth & Environment
Ecological systems often exhibit complex nonlinear dynamics like oscillations, chaos, and regime shifts. Universal dynamic equations have shown promise in modeling complex dynamics by combining known functional forms with neural networks that represent ...
Jack H. Buckner   +6 more
doaj   +1 more source

Travailler chez les autres

open access: yesLa Nouvelle Revue du Travail, 2016
France’s “personal services” sector largely involves individuals who work in another person’s home. Drawing on concepts taken from the sociology of gender and domestic work, the paper investigates the complex and dynamic forms used to produce domestic ...
Colette Le Petitcorps
doaj   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

Establishment of a humanized patient‐derived xenograft mouse model of high‐grade serous ovarian cancer for preclinical evaluation of combination immunotherapy

open access: yesMolecular Oncology, EarlyView.
We have established a humanized orthotopic patient‐derived xenograft (Hu‐oPDX) mouse model of high‐grade serous ovarian cancer (HGSOC) that recapitulates human tumor–immune interactions. Using combined anti‐PD‐L1/anti‐CD73 immunotherapy, we demonstrate the model's improved biological relevance and enhanced translational value for preclinical ...
Luka Tandaric   +10 more
wiley   +1 more source

Symmetry properties of complex contact space form

open access: yes, 2021
In this paper, some symmetry conditions on complex contact space forms are studied. Definitions of pseudo-symmetry in the Deszcz sense and Ricci-pseudo-symmetry in complex contact manifolds are given. The authors show that a complex contact space form is semi-symmetric if and only if it is locally isometric to CP2n+1(4).
openaire   +2 more sources

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