Results 91 to 100 of about 8,136,999 (366)

On the solutions of a second order difference equation [PDF]

open access: yesMathematica Moravica, 2017
In this paper, we discuss the global behavior of all solutions of the difference equation Xn+1 = XnXn-1 axn + bxn-1, n € N0, where a; b are real numbers and the initial conditions X-1, X0 are real numbers.
Abo-Zeid R.
doaj  

Global Hopf bifurcation for two zooplankton-phytoplankton model with two delays

open access: yesAdvances in Difference Equations, 2020
In this paper, we study the global existence of a bifurcating periodic solution for a two zooplankton-phytoplankton model with two delays. First, we demonstrate that the bifurcating periodic solution exists when one delay increases and the other delay ...
Renxiang Shi, Wenguo Yang
doaj   +1 more source

Evaluation of KRAS and NRAS mutations in metastatic colorectal cancer: an 8‐year study of 10 754 patients in Turkey

open access: yesMolecular Oncology, EarlyView.
This nationwide study evaluated KRAS and NRAS mutations in 10 754 Turkish patients with metastatic colorectal cancer. The results revealed a mutation frequency of 51.1%, with 46.6% having KRAS mutations, 4.5% having NRAS mutations, and 48.5% being wild‐type for both.
Gozde Kavgaci   +6 more
wiley   +1 more source

On optimal periodic solution of differential equations

open access: yesJournal of Kufa for Mathematics and Computer, 2018
this paper dedicated to the construction of solution of a three time scale periodic singular perturbed non-linear quadratic optimal control problem by using the direct method.
Methaq Hamza Geem
doaj   +1 more source

Genomics‐led approach to drug testing in models of undifferentiated pleomorphic sarcoma

open access: yesMolecular 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
wiley   +1 more source

Dynamical behaviors of a two-competitive metapopulation system with impulsive control

open access: yesAdvances 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
doaj   +1 more source

EMT‐associated bias in the Parsortix® system observed with pancreatic cancer cell lines

open access: yesMolecular 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

Some New Exact Solutions of (1+2)-Dimensional Sine-Gordon Equation

open access: yesAbstract and Applied Analysis, 2014
We use a generalized tanh function expansion method and a direct method to study the analytical solutions of the (1+2)-dimensional sine Gordon (2DsG) equation.
Wei-Xiong Chen, Ji Lin
doaj   +1 more source

Existence of Periodic Solution for a Nonlinear Fractional Differential Equation

open access: yes, 2009
We study the existence of solutions for a class of fractional differential equations. Due to the singularity of the possible solutions, we introduce a new and proper concept of periodic boundary value conditions. We present Green's function and give some
M. Belmekki   +2 more
semanticscholar   +1 more source

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