Results 121 to 130 of about 255,201 (317)

Mean curvature blow up in mean curvature flow

open access: yes, 2009
In this note we establish that finite-time singularities of the mean curvature flow of compact Riemannian submanifolds are characterised by the blow up of the mean curvature.
openaire   +2 more sources

Microglia limit brain tumor development by restricting tumor cell proliferation and inducing T‐cell immunity

open access: yesMolecular Oncology, EarlyView.
Microglia (BV2) and IL‐4‐treated BMDMs promote astrocytoma clustering and inhibit tumor growth, not shown in other macrophage cells. In vivo, microglial co‐implantation enhances CD8+ T cell infiltration, elevates Granzyme B, lowers circulating MDSCs, and extends survival only in immune‐competent mice, but not in immune‐deficient mice.
Tzu‐Chieh Sun   +5 more
wiley   +1 more source

A concentration phenomenon in mean curvature flow [PDF]

open access: yesManuscripta Mathematica, 1993
The mean curvature flow is the evolution of hypersurfaces by their mean curvature vectors and is described by the equation \({\partial f_ t\over \partial t} = H_{f_ t}\) where \(f_ t\) is an immersion of a compact smooth hypersurface of \(\mathbb{R}^{n+1}\) and \(H_{f_ t}\) denotes its curvature vector. The solution of this equation depends on the form
openaire   +1 more source

Gut microbiota diversity is prognostic in metastatic hormone receptor‐positive breast cancer patients receiving chemotherapy and immunotherapy

open access: yesMolecular Oncology, EarlyView.
In this exploratory study, we investigated the relationship between the gut microbiota and outcome in patients with metastatic hormone receptor‐positive breast cancer, treated in a randomized clinical trial with chemotherapy alone or chemotherapy in combination with immune checkpoint blockade.
Andreas Ullern   +7 more
wiley   +1 more source

Mean curvature flow on Ricci solitons [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2009
19 ...
openaire   +4 more sources

An efficient strategy for producing RNA‐free Nucleocapsid protein of SARS‐CoV‐2 for biochemical and structural investigations

open access: yesFEBS Open Bio, EarlyView.
Cleavable N‐terminal Thioredoxin fusion enabled soluble expression and purification of otherwise insoluble SARS‐CoV‐2 Nucleocapsid (N) protein. A four‐step purification strategy yielded highly homogeneous, RNA‐free N protein. Binding assays showed high RNA affinity (Kd ~ 28 nm). The study will facilitate high‐resolution structural studies of N protein,
Shweta Singh, Gagan D. Gupta
wiley   +1 more source

Drag Reduction Effects of Micro-Bubbles in Straight and Helical Pipes

open access: yesJournal of Fluid Science and Technology, 2009
Experimental investigations were conducted to study the effect of micro-bubbles injected into water flowing through straight and helical pipes with different curvature ( 0.025, 0.05 and 0.1).
Mohammed M. E. SHATAT   +3 more
doaj   +1 more source

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