Results 31 to 40 of about 1,568,392 (257)
Complete hypersurfaces with constant mean curvature and nonnegative sectional curvatures
, 1995 We classify the complete and non-negatively curved hypersurfaces of constant mean curvature in spaces of constant sectional curvature.
Ze Jun Hu
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The human gut microbiome across the life course
FEBS Letters, EarlyView.Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero +4 more
wiley +1 more source
Geometric Properties of Potent CR-Submanifolds
MathematicsIn this paper, we propose and explore the notion of potent CR-submanifolds (PCRSs) within the framework of almost Hermitian potent manifolds (AHPMs).
Najwa Mohammed Al-Asmari +3 more
doaj +1 more source
Sectional curvature and Weitzenb\"ock formulae [PDF]
, 2022 We establish a new algebraic characterization of sectional curvature bounds$\sec\geq k$ and $\sec\leq k$ using only curvature terms in the Weitzenb\"ockformulae for symmetric $p$-tensors. By introducing a symmetric analogue of theKulkarni-Nomizu product,
Mendes, R., Bettiol, R.
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FEBS Letters, EarlyView.We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace +6 more
wiley +1 more source
On the Geometry of the Kähler Golden Manifold
AxiomsThe main objective of this paper is to investigate the properties related to the sectional curvatures of a Kähler golden manifold, an almost Hermitian golden manifold whose almost complex golden structure is parallel with respect to the Levi–Civita ...
Cristina Elena Hreţcanu +1 more
doaj +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry
FEBS Letters, EarlyView.EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri +5 more
wiley +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
On projectivized vector bundles and positive holomorphic sectional curvature
, 2018 We generalize a construction of Hitchin to prove that, given any compact Kähler manifold M M with positive holomorphic sectional curvature and any holomorphic vector bundle E E over M M , the ...
Angelynn Alvarez +2 more
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