Results 61 to 70 of about 636,747 (250)

Stability of f(R) black holes

open access: yes, 2011
We investigate the stability of $f(R)$ (Schwarzschild) black hole obtained from the $f(R)$ gravity. It is difficult to carry out the perturbation analysis around the black hole because the linearized Einstein equation is fourth order in $f(R)$ gravity ...
A. De Felice   +3 more
core   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

open access: yesMolecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala   +15 more
wiley   +1 more source

Difference inequality for stability of impulsive difference equations with distributed delays

open access: yesJournal of Inequalities and Applications, 2011
In this paper, we consider a class of impulsive difference equations with distributed delays. By establishing an impulsive delay difference inequality and using the properties of "ρ-cone" and eigenspace of the spectral radius of non-negative ...
Long Shujun, Li Dingshi, Wang Xiaohu
doaj  

Thermoelastic stability of thick imperfect functionally graded plates

open access: yesVietnam Journal of Mechanics, 2010
This paper investigates buckling of thick functionally graded plates with initial geometrical imperfection under thermal loadings. The equilibrium, stability, and compatibility equations of an imperfect functionally graded plate are derived using the ...
Hoang Van Tung, Nguyen Dinh Duc
doaj   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

Dynamical Analysis of SIR Epidemic Model with Nonlinear Pulse Vaccination and Lifelong Immunity

open access: yesDiscrete Dynamics in Nature and Society, 2015
SIR epidemic model with nonlinear pulse vaccination and lifelong immunity is proposed. Due to the limited medical resources, vaccine immunization rate is considered as a nonlinear saturation function.
Wencai Zhao, Juan Li, Xinzhu Meng
doaj   +1 more source

Crucial parameters for precise copy number variation detection in formalin‐fixed paraffin‐embedded solid cancer samples

open access: yesMolecular Oncology, EarlyView.
This study shows that copy number variations (CNVs) can be reliably detected in formalin‐fixed paraffin‐embedded (FFPE) solid cancer samples using ultra‐low‐pass whole‐genome sequencing, provided that key (pre)‐analytical parameters are optimized.
Hanne Goris   +10 more
wiley   +1 more source

Physical modeling and geometric shape simulation for one-dimensional flexible objects with cylindrical surface constraints

open access: yesScientific Reports, 2023
This study develops forces equilibrium differential equations for the geometric modeling of 1D flexible objects with surface constraints. These second-order equations are an extension of the Cosserat elastic rod theory and include both bending and ...
Yuhang Mei   +3 more
doaj   +1 more source

Numerical solution of plane dynamic problems of the stiffened cylindrical shells elliptical cross – section theory under non-stationary load [PDF]

open access: yes, 2014
Розглянуто плоску задачу про вимушені коливання поздовжньо підкріплених циліндричних оболонок еліптичного перерізу під дією розподіленого нестаціонарного навантаження. Наведено постановку та розроблено чисельний алгоритм розв’язування задачі.
Kepenach, N.   +2 more
core  

Multi-site breathers in Klein-Gordon lattices: stability, resonances, and bifurcations

open access: yes, 2013
We prove the most general theorem about spectral stability of multi-site breathers in the discrete Klein-Gordon equation with a small coupling constant.
Anton Sakovich   +11 more
core   +1 more source

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