Results 71 to 80 of about 178,237 (295)
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 \(J=\bigl({0 \atop I_ n} {-I_ n \atop 0}\bigr)\).
Patricio Felmer, Patricio Felmer
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Molecular Oncology, EarlyView.mir‐196a promotes Esophagus Adenocarcinoma aggressiveness. On one hand, mir‐196a targets the valosin‐containing protein (VCP) mRNA, causing the accumulation of c‐MYC protein that leads to high amounts of TERT. On the other hand, mir‐196a targets the inhibitor of NFκB (NFKBIA).
Jesús García‐Castillo +8 more
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Dynamic Analysis of a Phytoplankton-Fish Model with Biological and Artificial Control
Discrete Dynamics in Nature and Society, 2014 We investigate a nonlinear model of the interaction between phytoplankton and fish, which uses a pair of semicontinuous systems with biological and artificial control. First, the existence of an order-1 periodic solution to the system is analyzed using a
Yapei Wang +3 more
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Dynamical behaviors of a two-competitive metapopulation system with impulsive control
Advances in Difference Equations, 2017 In this paper, we study the dynamical behaviors of a two-competitive metapopulation system with impulsive control and focus on the stable coexistence of the superior and inferior species.
Shasha Tian, Yepeng Xing, Tao Ma
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Periodic solutions of difference equations with general periodicity
Computers & Mathematics with Applications, 2001 The authors discuss the continuous difference equation \[ x(t+1)= f\bigl(x(t)\bigr)+ \varepsilon g\bigl(t,x(t), x(t+1)\bigr),\tag{1} \] where \(f\) and \(g\) are given continuous functions and \(\varepsilon >0\) is a parameter. The function \(g\) is \(m\)-periodic in \(t\) and \(m\) may be not equal to the period of the cycle of \(f\) (a set ...
Agarwal, R.P., Zhang, W.
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Genomics‐led approach to drug testing in models of undifferentiated pleomorphic sarcoma
Molecular Oncology, EarlyView.GA text Genomic data from undifferentiated pleomorphic sarcoma patients and preclinical models were used to inform a targeted drug screen. Selected compounds were tested in 2D and 3D cultures of UPS cell lines. A combination of trametinib and infigratinib was synergistic in the majority of UPS cell lines tested, which was further confirmed in an ex ...
Piotr J. Manasterski +19 more
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The point at infinity and periodic solutions
Journal of Differential Equations, 1965 In a previous paper [3], the concept of strong stability of the point at infinity relative to a two-dimensional system of ordinary differential equations was introduced and used to establish the existence of periodic solutions of the system of differential equations.
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EMT‐associated bias in the Parsortix® system observed with pancreatic cancer cell lines
Molecular Oncology, EarlyView.The Parsortix® system was tested for CTC enrichment using pancreatic cancer cell lines with different EMT phenotypes. Spike‐in experiments showed lower recovery of mesenchymal‐like cells. This was confirmed with an EMT‐inducible breast cancer cell line.
Nele Vandenbussche +8 more
wiley +1 more source
On some possible extensions of Massera's theorem
Electronic Journal of Qualitative Theory of Differential Equations, 2000 In this paper we consider ordinary and functional differential equations with $T$-periodic right hand side and look at some conjectures on proving the existence of a periodic solution.
Géza Makay
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On the Quasi-periodic Solutions of Mathieu's Differential Equation [PDF]
, 1913 Andrew W. Young
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