Results 111 to 120 of about 4,596,099 (356)

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Research on acoustic emission characteristics and mechanical properties of shale under uniaxial and conventional triaxial compression

Scientific Reports
In order to analyze the acoustic emission (AE) characteristics and mechanical properties of muddy shale under different stress conditions, uniaxial and conventional triaxial compression tests and AE tests were carried out through the MTS815 electro ...
Wenjie Wu, Chee-Ming Chan, Xiaopeng Su, Yilei Gu, Mingqing Liu, Weijia Shao   +5 more
doaj   +1 more source

Leak detector [PDF]

, 1975
A detector for sensing a leaking of fluid pressures is reported. The detector is characterized by an hermetically sealed housing confining therewithin a first normalized pressure, a connector for coupling the housing in direct communication with a ...
Sawyer, J. T.
core   +1 more source

Yielding and hardening of flexible fiber packings during triaxial compression

, 2019
This paper examines the mechanical response of flexible fiber packings subject to triaxial compression. Short fibers yield in a manner similar to typical granular materials in which the deviatoric stress remains nearly constant with increasing strain ...
Curtis, Jennifer, Guo, Yu, Jin, Hanhui, Li, Yanjie, Liu, Qingzhao, Wassgren, Carl, Xu, Dandan   +6 more
core   +1 more source

Direct measurement of molecular stiffness and damping in confined water layers [PDF]

, 2003
We present {\em direct} and {\em linear} measurements of the normal stiffness and damping of a confined, few molecule thick water layer. The measurements were obtained by use of a small amplitude (0.36 $\textrm{\AA}$), off-resonance Atomic Force ...
Ahmet Oral, Chandra Ramanujan, H. Özgür Özer, J. N. Israelachvili, John B. Pethica, P. M. Hoffmann, Peter M. Hoffmann, S. J. O’Shea, Steve Jeffery, W. F. Bradley, W. N. Findley   +10 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Brittle-ductile transition and associated seismicity: Experimental and numerical studies and relationship with the b-value [PDF]

, 2003
International audienceThe acoustic emission (AE) and the mechanical behavior of granite samples during triaxial compression tests have been analyzed. The size of AE events displays power law distributions, conforming to the Gutenberg-Richter law observed
Amitrano, Besuelle, Brace, Chen, Costin, Darot, David Amitrano, Escartin, Fredrich, Gerstenberg, Grassberger, Gutenberg, Hirth, Hirth, Hoek, Jaeger, Kemeny, Kranz, Li, Lockner, Lockner, Lockner, Main, Mekkawi, Menendez, Meredith, Mogi, Mori, Olami, Pickering, Place, Reches, Savage, Scholz, Scholz, Schulson, Sue, Tang, Tang, Velde, Wang, Wawersick, Weiss, Young, Zapperi   +44 more
core   +3 more sources

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

The environments of double radiogalaxies [PDF]

Discussed here are simple methods by which the densities and pressures of the gas confining double radiogalaxies can be estimated from optical and x ray data.
Rawlings, Steve
core   +1 more source

QCD phase transition at real chemical potential with canonical approach [PDF]

, 2015
We study the finite density phase transition in the lattice QCD at real chemical potential. We adopt canonical approach and the canonical partition function is constructed for Nf=2 QCD.
Nakamura Atsushi, Oka Shotaro, Taniguchi Yusuke, 谷口 裕介   +3 more
core   +2 more sources