Results 51 to 60 of about 4,174,375 (305)

Ascertaining when a basin is Wada: the merging method

open access: yesScientific Reports, 2018
Trying to imagine three regions separated by a unique boundary seems a difficult task. However, this is exactly what happens in many dynamical systems showing Wada basins.
Alvar Daza   +2 more
doaj   +1 more source

Study on the Inherent Complex Features and Chaos Control of IS–LM Fractional-Order Systems

open access: yesEntropy, 2016
Based on the traditional IS–LM economic theory, which shows the relationship between interest rates and output in the goods and services market and the money market in macroeconomic. We established a four-dimensional IS–LM model involving four variables.
Junhai Ma, Wenbo Ren, Xueli Zhan
doaj   +1 more source

Strain Rate Effect on Mechanical Properties of the 3D-Printed Metamaterial Foams With Tunable Negative Poisson’s Ratio

open access: yesFrontiers in Materials, 2021
As a kind of metamaterial, the negative Poisson’s ratio foams, which expand (shrink) in the transverse direction when stretched (compressed) in the longitudinal direction, have many potential applications in fields such as aerospace and mechanical and ...
Di Gao   +9 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Nonlinear Drillstring Dynamics Analysis [PDF]

open access: yesSIAM Journal on Applied Dynamical Systems, 2009
This paper studies the dynamical response of a rotary drilling system with a drag bit, using a lumped parameter model that takes into consideration the axial and torsional vibration modes of the bit. These vibrations are coupled through a bit-rock interaction law.
Germay, Christophe   +3 more
openaire   +1 more source

Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer

open access: yesAging and Cancer, EarlyView.
Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss   +12 more
wiley   +1 more source

Application of nonlinear dynamics in civil aerospace [PDF]

open access: yes, 2009
Nonlinear analysis techniques, especially methods from bifurcation theory, have emerged as valuable tools over the last 20 years, particularly due to the advent of the modern computer.
Coetzee, E B, Coetzee, Etienne
core  

Microscale velocity-dependent unbinding generates a macroscale performance-efficiency tradeoff in actomyosin systems

open access: yesCommunications Biology
Myosin motors are fundamental biological actuators that power diverse mechanical tasks in eukaryotic cells via ATP hydrolysis. Previous work has linked myosin’s velocity-dependent detachment rate to macroscopic scale muscle dynamics described by Hill’s ...
Jake McGrath   +3 more
doaj   +1 more source

Predictive Value of Composite Inflammatory Markers for Stroke Prognosis: A Prospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Novel composite inflammatory markers' role in stroke prognosis is understudied, and the best predictor is unclear, requiring further exploration. Objectives This study aimed to systematically evaluate the associations of 6 novel composite inflammatory markers on stroke prognosis.
Bing Wu   +7 more
wiley   +1 more source

Fractional dynamic system simulating the growth of microbe

open access: yesAdvances in Difference Equations, 2021
There are different approaches that indicate the dynamic of the growth of microbe. In this research, we simulate the growth by utilizing the concept of fractional calculus.
Samir B. Hadid, Rabha W. Ibrahim
doaj   +1 more source

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