Results 61 to 70 of about 4,543,260 (298)

Propagation thermoelastic impulse through a cylindrical waveguide under sidewall heat interchanging

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
The paper is devoted to a study of coupled harmonic thermoelastic impulse guided propagation through an infinite circular cylinder. Heat interchanging is supposed to take place between sidewall of the waveguide and environment.
Vladimir A Kovalev, Yuriy N Radaev, Roman A Revinsky   +2 more
doaj  

Entrainment of frequency in evolution equations

Journal of Differential Equations, 1973
AbstractThe existence of periodic solutions near resonance is discussed using elementary methods for the evolution equation ·u = Au + ϵf(t, u) when the linear problem is totally degenerate (e2πA = I) and the period of f is entrained with ϵ (T = 2π(1 + ϵμ)).
Fink, James P., Hall, William S.
openaire   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

Linearly Perturbed Frequency Equation, New Frequency Formula, and a Linearized Galerkin Method for Nonlinear Vibrational Oscillators

Vibration
A new frequency–amplitude formula by improving an ancient Chinese mathematics method results in a modification of He’s formula. The Chinese mathematics method that expresses via a fixed-point Newton form is proven to be equivalent to the original ...
Chein-Shan Liu, Chia-Cheng Tsai, Chih-Wen Chang   +2 more
doaj   +1 more source

Time frequency property for a micro resonant gas sensor

AIP Advances, 2013
In this paper, combining dynamics equation of the resonant cantilever with kinetic equation of the adsorption reaction between coatings and the measured gas, a mechanical chemical coupled dynamics equation is proposed. Using the method of multiple scales,
Lizhong Xu, Qing Yang
doaj   +1 more source

The frequency-dependent neuronal length constant in transcranial magnetic stimulation

Frontiers in Cellular Neuroscience, 2016
Background: The behavior of the dendritic or axonal membrane voltage due to transcranial magnetic stimulation (TMS) is often modeled with the one-dimensional cable equation.
Risto Juhani Ilmoniemi, Hanna Katriina Mäki, Hanna Katriina Mäki, Jukka Saari, Ricardo Salvador, Pedro Cavaleiro Miranda   +5 more
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

The frequency analytical method for regional power systems considering the emergency frequency control

Frontiers in Energy Research
With the continuous construction of high-voltage direct-current (HVDC) transmission projects, higher requirements are placed on the frequency security of the regional power systems.
Zheng Shi, Haibo Zhao, Yao Wang, Yan Liang, Yan Liang, Lu Yan, Xiaowei Zhang, Ming Zhang   +7 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source