Results 51 to 60 of about 337,853 (263)
Double Grazing Periodic Motions and Bifurcations in a Vibroimpact System with Bilateral Stops
Abstract and Applied Analysis, 2014 The double grazing periodic motions and bifurcations are investigated for a two-degree-of-freedom vibroimpact system with symmetrical rigid stops in this paper.
Qunhong Li +3 more
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Period Selection for Minimal Hyperperiod in Periodic Task Systems [PDF]
IEEE Transactions on Computers, 2013 This work has been funded by the Spanish Government Research Office, project TIN2008-06766-C03-02 (RT-MODEL).
Ismael Ripoll, Rafael Ballester-Ripoll
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FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source
Discrete Dynamics in Nature and Society, 2006 A nonautonomous semiratio-dependent predator-prey system with nonmonotonic functional responses is investigated. For general nonautonomous case, positive invariance, permanence, and globally asymptotic stability for the system are studied.
Hai-Feng Huo, Wan-Tong Li
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Organoids in pediatric cancer research
FEBS Letters, EarlyView.Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
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Periodic Law and Periodic system of chemical elements
Тонкие химические технологии, 2009 The earliar attempts chemical of elements' classifications were usually based on their properties. Since chemical properties are very complex and diverse, so that classifications were unsuccessful.
L. Yu. Alikberova
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Periodicity and quasi-periodicity for super-integrable Hamiltonian systems [PDF]
Physics Letters A, 1990 Classical trajectories are calculated for two Hamiltonian systems with ring shaped potentials. Both systems are super-integrable, but not maximally super-integrable, having four globally defined single valued integrals of motion each. All finite trajectories are quasi-periodical; they become truly periodical if a commensurability condition is imposed ...
Kibler, Maurice, R., Winternitz, Pavel
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FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Almost periodic skew-symmetric differential systems
Electronic Journal of Qualitative Theory of Differential Equations, 2012 We analyse solutions of almost periodic skew-symmetric homogeneous linear differential systems. We prove that in any neighbourhood of such a system there exists an almost periodic skew-symmetric system which does not possess any non-trivial almost ...
Michal Veselý
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Periodic solutions of spatially periodic hamiltonian systems
Journal of Differential Equations, 1992 The existence of periodic solutions for Hamiltonian systems of ordinary differential equations (1) \(\dot z=J(H_ z(z,t)+f(t))\) is studied, where \(H: R^{2n}\times R\to R\) is of class \(C^ 1\) and is \(2\pi\)-periodic with respect to \(t\); \(f: R\to R\) is continuous and \(2\pi\)-periodic and \(J=\bigl({0 \atop I_ n} {-I_ n \atop 0}\bigr)\).
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