Results 101 to 110 of about 339,342 (334)

Combinatorial Synthesis of Next Generation Water‐Soluble Quaternized N‐Halamine Oligomers with Long‐Lasting Antiviral Properties

open access: yesAdvanced Functional Materials, EarlyView.
A combinatorial library of dual‐functional antiviral oligomers incorporating N‐halamine and quaternary ammonium functionalities is developed for long‐lasting antiviral activity. The lead materials exhibit rapid and durable antiviral activity against SARS‐CoV‐2 variants and influenza H1N1, with 4 to 5 log reduction in viral copies at 5 mg mL−1 ...
Eid Nassar‐Marjiya   +14 more
wiley   +1 more source

Permanence in a class of delay differential equations with mixed monotonicity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
In this paper we consider a class of delay differential equations of the form $\dot{x}(t)=\alpha (t) h(x(t-\tau), x(t-\sigma))-\beta(t)f(x(t))$, where $h$ is a mixed monotone function.
István Győri   +2 more
doaj   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

Factors related to longevity of physician in the family physician program in Rural family physician program of sabsevar by using Dematel method

open access: yesپیاورد سلامت, 2021
Background and Aim: The fair access to health services is one of the most important challenges of the country health system. The family physician was designed to increase access to services, reduce parallel work, and make optimal use of the country’s ...
Mehrnoosh Jafari   +2 more
doaj  

Ongoing Emergence: A Core Concept in Epigenetic Robotics [PDF]

open access: yes, 2005
We propose ongoing emergence as a core concept in epigenetic robotics. Ongoing emergence refers to the continuous development and integration of new skills and is exhibited when six criteria are satisfied: (1) continuous skill acquisition, (2 ...
Helder, Nathan   +2 more
core   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

Permanence for a competition and cooperation model of enterprise cluster with delays and feedback controls

open access: yesElectronic Journal of Differential Equations, 2013
In this article, based on population ecology theory, we present a competition and cooperation system of the enterprise cluster with time delays and feedback controls.
Ping Liu, Yongkun Li
doaj  

Non-permanence for three-species Lotka-Volterra cooperative difference systems

open access: yesAdvances in Difference Equations, 2017
The permanence for three-species cooperative difference systems of Lotka-Volterra is considered. By constructing some suitable regions, we prove that a cooperative system cannot be permanent.
Guichen Lu, Zhengyi Lu
doaj   +1 more source

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