Results 91 to 100 of about 304,833 (302)

On the solutions of a three-dimensional system of difference equations

open access: yesKuwait Journal of Science, 2015
In this paper, we obtain the explicit solutions of the three-dimensional system of difference equations with multiplicative terms, which extended some results in literature.
Yasin Yazlık   +2 more
doaj  

Behavior of a Competitive System of Second-Order Difference Equations

open access: yesThe Scientific World Journal, 2014
We study the boundedness and persistence, existence, and uniqueness of positive equilibrium, local and global behavior of positive equilibrium point, and rate of convergence of positive solutions of the following system of rational difference equations ...
Q. Din, T. F. Ibrahim, K. A. Khan
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Finite-difference solutions of tenth-order boundary-value problems

open access: yes, 1994
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis finite difference methods are used to obtain numerical solutions for a class of high-order ordinary differential equations with applications ...
Siddiqui, Aijaz Ahmad
core  

Cauchy Problem for a Linear System of Ordinary Differential Equations of the Fractional Order

open access: yes, 2020
We investigate the initial problem for a linear system of ordinary differential equations with constant coefficients and with the Dzhrbashyan–Nersesyan fractional differentiation operator.
Murat Mamchuev
core   +1 more source

Nontrivial Solutions of Systems of Perturbed Hammerstein Integral Equations with Functional Terms

open access: yes, 2021
We discuss the solvability of a fairly general class of systems of perturbed Hammerstein integral equations with functional terms that depend on several parameters.
Gennaro Infante
core   +1 more source

Oscillation for System of Delay Difference Equations

open access: yesJournal of Mathematical Analysis and Applications, 1999
Consider the system of difference equations \[ x_i(t)-x_i(t-\sigma) +\sum^l_{k=1} \sum^n_{j=1}p_{ijk} x_j(t-\tau_k)=0,\;i=1,2,\dots, n,\tag{*} \] where \(p_{ijk}\in\mathbb{R}\), \(\sigma\) and \(\tau_k\in (0,\infty)\), \(i,j=1,2, \dots, n\), \(k=1,2,\dots,l\).
Yan, Jurang, Zhang, Fengqin
openaire   +1 more source

Product-type system of difference equations of second-order solvable in closed form

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
This paper presents solutions of the following second-order system of difference equations $$x_{n+1}=\frac{y_n^a}{z_{n-1}^b},\qquad y_{n+1}=\frac{z_n^c}{x_{n-1}^d},\qquad z_{n+1}=\frac{x_n^f}{y_{n-1}^g},\qquad n\in N_0,$$ where $a,b,c,d,f,g\in Z$, and ...
Stevo Stevic
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Dynamical behavior of a system of three-dimensional nonlinear difference equations

open access: yes, 2018
In this paper, we study the boundedness, persistence, and periodicity of the positive solutions and the global asymptotic stability of the positive equilibrium points of the system of difference equations xn+1=A+xn−1zn,yn+1=A+yn−1zn,zn+1=A+zn−1yn,n=0,1,…,
Yüksel Soykan, İnci Okumuş
core   +1 more source

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