Results 71 to 80 of about 1,744,424 (375)

About the torsion tensor of an affine connection on two-dimensional and three-dimensional manifolds

open access: yesДифференциальная геометрия многообразий фигур, 2021
The basis for this study of affine connections in linear frame bundle over a smooth manifold is the structure equations of the bundle. An affine connection is given in this bundle by the Laptev — Lumiste method. The differential equations are written for
K.V. Polyakova
doaj   +1 more source

Fiber bundles and matrix models [PDF]

open access: yesPhysical Review D, 2008
53 pages, references added, typos ...
Ishii, Takaaki   +3 more
openaire   +2 more sources

KLK7 overexpression promotes an aggressive phenotype and facilitates peritoneal dissemination in colorectal cancer cells

open access: yesFEBS Open Bio, EarlyView.
KLK7, a tissue kallikrein‐related peptidase, is elevated in advanced colorectal cancer and associated with shorter survival. High KLK7 levels in ascites correlate with peritoneal metastasis. In mice, KLK7 overexpression increases metastasis. In vitro, KLK7 enhances cancer cell proliferation, migration, adhesion, and spheroid formation, driving ...
Yosr Z. Haffani   +6 more
wiley   +1 more source

Tensile mechanical behavior of SiC fiber bundle reinforced composites with different interfaces

open access: yesCailiao gongcheng, 2019
Based on the domestic third generation SiC fiber, the SiC fiber bundle reinforced composites with different interface thicknesses and matrix volume fractions were fabricated by chemical vapor infiltration, and the tensile behavior of the composites was ...
HE Zong-bei   +5 more
doaj   +1 more source

Stress theory for classical fields

open access: yes, 2017
Classical field theories together with the Lagrangian and Eulerian approaches to continuum mechanics are embraced under a geometric setting of a fiber bundle.
Kupferman, Raz   +2 more
core   +1 more source

Damage in fiber bundle models [PDF]

open access: yesThe European Physical Journal B, 2000
We introduce a continuous damage fiber bundle model that gives rise to macroscopic plasticity and compare its behavior with that of dry fiber bundles. Several interesting constitutive behaviors are found in this model depending on the value of the damage parameter and on the form of the disorder distribution.
F. Kun, S. Zapperi, H. J. Hermann
openaire   +2 more sources

Widefield lensless imaging through a fiber bundle via speckle correlations.

open access: yesOptics Express, 2016
Flexible fiber-optic endoscopes provide a solution for imaging at depths beyond the reach of conventional microscopes. Current endoscopes require focusing and/or scanning mechanisms at the distal end, which limit miniaturization, frame-rate, and field of
A. Porat   +5 more
semanticscholar   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Evaluation and Impact Factors of the Mechanical Properties of Phloem Bundle Fibers Obtained from Kenaf Germplasm

open access: yesJournal of Natural Fibers, 2018
The mechanical properties of kenaf phloem bundle fibers are valuable for reinforced composites or boards, more so than similar materials also used in textile or papermaking applications.
Zhou Cheng   +6 more
doaj   +1 more source

Fiber Bundle Estimation and Parameterization [PDF]

open access: yes, 2006
Individual white matter fibers cannot be resolved by current magnetic resonance (MR) technology. Many fibers of a fiber bundle will pass through an individual volume element (voxel). Individual visualized fiber tracts are thus the result of interpolation on a relatively coarse voxel grid, and an infinite number of them may be generated in a given ...
Niethammer, Marc   +3 more
openaire   +3 more sources

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