Results 41 to 50 of about 1,447,206 (291)
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa +8 more
wiley +1 more source
On a class of difference equations involving a linear map with two dimensional kernel
Electronic Journal of Qualitative Theory of Differential Equations, 2020 We establish necessary and sufficient conditions for the existence of periodic solutions to second-order nonlinear difference equations of the form $\Delta^2x_i+\lambda x_i+\Delta f(x_i)=e_i$, $i\in{\mathbb N}$, and for a simpler equation with difference-
Luís Ferreira, Luis Sanchez Rodrigues
doaj +1 more source
On Periodic Solutions of One Second-Order Differential Equation
Современная математика: Фундаментальные направления, 2021 In this paper, we investigate the movement of an inverted pendulum, the suspension point of which performs high-frequency oscillations along a line making a small angle with the vertical.
G. V. Demidenko, A. V. Dulepova
doaj +1 more source
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
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source
Stability Analysis of Fractional-Order Periodic Piecewise Nonlinear Systems
IEEE Access, 2023 This paper investigates the stability problem of fractional-order periodic piecewise nonlinear systems. As a preparation, the existence and uniqueness of solutions of the system are derived under the Lipschitz condition and expressed in an equivalent ...
Qingqing Li +4 more
doaj +1 more source
Coexisting periodic attractors in injection locked diode lasers [PDF]
, 1997 We present experimental evidence for coexisting periodic attractors in a semiconductor laser subject to external optical injection. The coexisting attractors appear after the semiconductor laser has undergone a Hopf bifurcation from the locked steady ...
A Gavrielides +14 more
core +2 more sources
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source
High-Order Melnikov Method for Time-Periodic Equations
Advanced Nonlinear Studies, 2017 This paper discusses a high-order Melnikov method for periodically perturbed equations. We introduce a new method to compute Mk(t0){M_{k}(t_{0})} for all k≥0{k\geq 0}, among which M0(t0){M_{0}(t_{0})} is the traditional Melnikov function, and M1(t0 ...
Chen Fengjuan, Wang Qiudong
doaj +1 more source
Periodic boundary value problems for first order difference equations
Electronic Journal of Qualitative Theory of Differential Equations, 2012 In this paper, existence criteria for single and multiple positive solutions of some of periodic boundary value problems for first order difference equation \[\left\{\begin{array}{ll} \Delta x(k)+f(k,x(k+1))=0, & k\in \left[ 0,T\right] ,\\ x(0)=x(T+1), &
Wen Guan, Suang-Hong Ma, Da-Bin Wang
doaj +1 more source