Results 51 to 60 of about 1,266,565 (288)

Design Principles for Deployable Fibers Inspired by Hagfish Defense

open access: yesAdvanced Science
Hagfish produce extraordinary slime as a defense mechanism, releasing exudate from glands that rapidly form a fibrous, soft, ultra‐dilute, water‐capturing network upon contact with seawater (up to 10 000 times its original volume). The gland thread cell (
Mohammad Tanver Hossain   +8 more
doaj   +1 more source

Torsion of Truncated Hollow Spherical Elastic Body

open access: yesInternational Journal of Engineering and Management Sciences, 2021
This paper deals with the torsion of a body of rotation whose shape is a truncated hollow sphere. The material of the truncated hollow sphere is isotropic, homogeneous and linearly elastic.
István Ecsedi   +3 more
doaj   +1 more source

Two-timing, variational principles and waves [PDF]

open access: yes, 1970
In this paper, it is shown how the author's general theory of slowly varying wave trains may be derived as the first term in a formal perturbation expansion.
Whitham, G. B.
core   +1 more source

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Interlayer shear coupling in bilayer graphene

open access: yesnpj 2D Materials and Applications, 2022
The interfacial shear coupling (ISC) governs the relative in-plane deformations of layered two-dimensional (2D) van der Waals (vdW) materials, which is significant for both the fundamental theory of solid mechanics and the stability design of 2D devices.
Jinglan Liu   +10 more
doaj   +1 more source

Formulation, Interpretation and Application of non-Commutative Quantum Mechanics

open access: yes, 2008
In analogy with conventional quantum mechanics, non-commutative quantum mechanics is formulated as a quantum system on the Hilbert space of Hilbert-Schmidt operators acting on non-commutative configuration space.
A Hafver   +14 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Molecular mechanics applied to single-walled carbon nanotubes

open access: yesMaterials Research, 2008
Single-walled carbon nanotubes, with stiffness of 1.0 TPa and strength of 60 GPa, are a natural choice for high strength materials. A problem, however, arises when experimental data are compiled.
Antonio Ferreira Ávila   +1 more
doaj   +1 more source

Extensive generalization of statistical mechanics based on incomplete information theory

open access: yes, 2003
Statistical mechanics is generalized on the basis of an additive information theory for incomplete probability distributions. The incomplete normalization $\sum_{i=1}^wp_i^q=1$ is used to obtain generalized entropy $S=-k\sum_{i=1}^wp_i^q\ln p_i$.
Wang, Qiuping A.
core   +2 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

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