Results 21 to 30 of about 61,767 (263)

On bifurcation from infinity for potential operators

Differential and Integral Equations, 1991
The authors consider the equation (1) \(Lu+G(u)=\lambda u\) where \(L\) is a bounded linear selfadjoint operator on the Hilbert space \(X\) and \(G\in C(\Omega,X)\) is of potential type. They are concerned with solutions of equation (1) which bifurcate from infinity: more precisely \((\mu,\infty)\) is a bifurcation point from infinity if, for any ...
Schmitt, Klaus, Wang, Zhi Qiang
openaire   +3 more sources

Infinitely many solutions for fractional Schrödinger equation with potential vanishing at infinity

Boundary Value Problems, 2019
The paper investigates the following fractional Schrödinger equation: (−Δ)su+V(x)u=K(x)f(u),x∈RN, $$\begin{aligned} (-\Delta )^{s}u+V(x)u=K(x)f(u), \quad x\in \mathbb{R}^{N}, \end{aligned}$$ where ...
Yongzhen Yun, Tianqing An, Jiabin Zuo, Dafang Zhao   +3 more
doaj   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

On some Schrödinger equations with non regular potential at infinity

Discrete & Continuous Dynamical Systems - A, 2010
In this paper we study the existence of solutions $u\in H^1(\R^N)$ for the problem $-\Delta u+a(x)u=|u|^{p-2}u$, where $N\ge 2$ and $p$ is superlinear and subcritical. The potential $a(x)\in L^\infty(\R^N)$ is such that $a(x)\ge c>0$ but is not assumed to have a limit at infinity. Considering different kinds of assumptions on the geometry of $a(x)$
CERAMI, Giovanna, Molle, R.
openaire   +2 more sources

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Ordinary Differential Equation with Left and Right Fractional Derivatives and Modeling of Oscillatory Systems

Mathematics, 2020
We consider the principle of least action in the context of fractional calculus. Namely, we derive the fractional Euler–Lagrange equation and the general equation of motion with the composition of the left and right fractional derivatives defined on ...
Liana Eneeva, Arsen Pskhu, Sergo Rekhviashvili   +2 more
doaj   +1 more source

An Infinity Tube with an Expansion Chamber for Noise Control in the Ductwork System

Sensors, 2022
This paper proposes a muffler with simple geometry to effectively reduce low-frequency noise in ductwork systems. A muffler named infinity tube with an expansion chamber (ITEC) is developed from the infinity tube (IT).
Rong Xue, Cheuk Ming Mak, Chenzhi Cai, Kuen Wai Ma   +3 more
doaj   +1 more source

Bound states of nonlinear Schrödinger equations with potentials vanishing at infinity

Journal d'Analyse Mathématique, 2005
We deal with a class on nonlinear Schrödinger equations (NLS) with potentials V(x)\sim |x|^{-\alpha} , 0<\alpha<2 , and K(x)\sim |x|^{-\beta ...
Ambrosetti, Antonio, Felli, Veronica, Malchiodi, Andrea   +2 more
openaire   +6 more sources