Results 81 to 90 of about 70,365 (263)

An implicit division of bounded and unbounded linear operators which preserves their properties

open access: yesGlasnik matematicki, 2011
We give an answer to the following problem: Given two linear operators A and B such that BA and A verify some property P , then when does B verify the same property P ? Of course, we have to assume that B satisfies some condition Q independent of (or weaker than) P .
openaire   +3 more sources

AI–Guided 4D Printing of Carnivorous Plants–Inspired Microneedles for Accelerated Wound Healing

open access: yesAdvanced Materials, EarlyView.
This work presents an artificial intelligence (AI)‐guided 4D‐printed microneedle platform inspired by carnivorous plants for wound healing. A thermo‐responsive shape memory polymer enables body temperature–triggered self‐coiling for autonomous wound closure.
Hyun Lee   +21 more
wiley   +1 more source

Existence, Uniqueness, and Mittag–Leffler–Ulam Stability Results for Cauchy Problem Involving ψ-Caputo Derivative in Banach and Fréchet Spaces

open access: yesInternational Journal of Differential Equations, 2020
Our aim in this paper is to investigate the existence, uniqueness, and Mittag–Leffler–Ulam stability results for a Cauchy problem involving ψ-Caputo fractional derivative with positive constant coefficient in Banach and Fréchet Spaces.
Choukri Derbazi   +3 more
doaj   +1 more source

On non-round points of the boundary of the numerical range and an application to non-selfadjoint Schr\"odinger operators [PDF]

open access: yes, 2014
We show that non-round boundary points of the numerical range of an unbounded operator (i.e. points where the boundary has infinite curvature) are contained in the spectrum of the operator.
Hansmann, Marcel
core  

Autonomous Cargo Transport with Biohybrid Microswimmers Enabled by Light‐Mediated Bacteria‐Cargo Communication

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Biohybrid microswimmers, which integrate the unique mobility and taxis of living cells with the versatility of synthetic cargo, offer exciting opportunities for targeted delivery. However, current biohybrids lack autonomous decision‐making capabilities due to the absence of communication between living and synthetic components. Here, we report
Xiaoran Zheng   +3 more
wiley   +1 more source

Weighted composition operators between growth spaces on circular and strictly convex domain [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2015
Let $Omega_X$ be a bounded, circular and strictly convex domain of a Banach space $X$ and $mathcal{H}(Omega_X)$ denote the space of all holomorphic functions defined on $Omega_X$.
Shayesteh Rezaei
doaj  

Light‐Controlled Exposure of Cancer Cells to Reactive Oxygen Species Using Organic Semiconductor Thin Films

open access: yesAdvanced Materials Interfaces, EarlyView.
Spin‐coated films of the conjugated polymer F8T2 (poly (9,9‐dioctylfluorene‐alt‐bithiophene)) generate superoxide at the film‐medium interface, enabling precise delivery of reactive oxygen species (ROS) as visible‐light “ROS patches.” Coated surfaces drive rapid, localised cytotoxicity in MCF7 cancer monolayers under white light, providing a reagent ...
Joe Kaye   +8 more
wiley   +1 more source

High Stability of Diketopyrrolopyrrole Polymer Transistors Under Aqueous Condition Toward Biosensing Platform

open access: yesAdvanced Materials Technologies, EarlyView.
We are reporting the first‐time investigation of DPP‐based Organic Field‐Effect Transistor (OFET) devices with high‐stability of signal response in both of ambient and aqueous conditions with PBS solution. ABSTRACT Diketopyrrolopyrrole (DPP)–based conjugated polymers show strong promise for electronic applications, including bioelectronic gas sensors ...
Chattarika Khamhanglit   +6 more
wiley   +1 more source

Existence of weak solutions for nonlinear systems involving several p-Laplacian operators

open access: yesElectronic Journal of Differential Equations, 2009
In this article, we study nonlinear systems involving several p-Laplacian operators with variable coefficients. We consider the system $$ -Delta _{p_i}u_i=a_{ii}(x)|u_i|^{p_i-2}u_i -sum_{j eq i}^{n}a_{ij}(x)|u_i|^{alpha _i}|u_j|^{alpha_j}u_j+f_i(x),
Salah A. Khafagy, Hassan M. Serag
doaj  

Bounds for the gradient of the transition kernel for elliptic operators with unbounded diffusion, drift and potential terms

open access: yesDiscrete and Continuous Dynamical Systems - S
We prove global Sobolev regularity and pointwise upper bounds for the gradient of transition densities associated with second order differential operators in $\mathbb{R}^d$ with unbounded diffusion, drift and potential terms.
Markus Kunze   +2 more
openaire   +3 more sources

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