Results 31 to 40 of about 379,760 (213)
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 +2 more
wiley +1 more source
Inverse boundary problems for intermediate springs on a rod with geometrical symmetry
Electronic Journal of Differential Equations, 2017 In this article we try to solve the inverse problem of determining the coefficients of stiffness of the intermediates on the springs on the rod from the two known natural frequencies.
Daulet B. Nurakhmetov +2 more
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Modal analysis of a small vertical axis wind turbine (Type DARRIEUS) [PDF]
INCAS Bulletin, 2012 This paper reports a brief study on free vibration analysis for determining parameters such as natural frequencies and mode shapes for vertical axis wind turbines (VAWT) for an urban application.
Ion NILA +3 more
doaj +1 more source
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
NATURAL FREQUENCIES AND MODES SHAPES OF TWO RIGID BLADED DISCS ON THE SHAFT
TASK Quarterly, 2004 The dynamic behavior of a rotor consisting of two bladed discs on a solid shaft is considered. The effect of shaft flexibility on the dynamic characteristics of the bladed discs and the coupling effects between the shaft and bladed disc modes are ...
ROMUALD RZĄDKOWSKI, JACEK SOKOŁOWSKI
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Natural Frequencies of a Tethered Satellite System
Applied SciencesThis study investigated the natural frequencies of a tethered satellite system to enhance stability and operational reliability. Tethered satellite systems provide many advantages for space missions but exhibit inherently complex dynamics due to the ...
Yihun Yoon, Woojae Jang, Jintai Chung
doaj +1 more source
Axisymmetric Natural Frequencies of Statically Loaded Annular Plates
Shock and Vibration, 2003 We present a numerical procedure to solve the axisymmetric vibration problem of statically loaded annular plates. We use the von Kármán nonlinear plate model to account for large deformations and study the effect of static deflections on the natural ...
Eihab M. Abdel-Rahman +2 more
doaj +1 more source
Balanced Definition of Thresholds for Mode Tracking in a Long-Term Seismic Monitoring System
Geosciences, 2023 The catastrophic events of recent years have strengthened the awareness of the fragility of the built heritage and the importance of careful and targeted maintenance.
Stefania Coccimiglio +4 more
doaj +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
On Free Boundary and Interfacial Vibrations of Thin Elastic Semi-Infinite Plates with Free End
Механика машин, механизмов и материалов, 2015 Free planar and bending interfacial and boundary vibrations of semi infinite composed plates and plate strips are studied. Using the system of equations of the related classical theory of orthotropic plates, dispersion equations and asymptotic formulas ...
Gurgen R. Ghulghazaryan +2 more
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