Results 41 to 50 of about 1,790,903 (284)

Traveling Wave Solutions of a Reaction-Diffusion Equation with State-Dependent Delay [PDF]

open access: yes, 2014
This paper is concerned with the traveling wave solutions of a reaction-diffusion equation with state-dependent delay. When the birth function is monotone, the existence and nonexistence of monotone traveling wave solutions are established.
Lin, Guo, Wang, Haiyan
core  

INSTABILITY OF A NIELSEN-OLESEN VORTEX EMBEDDED IN THE ELECTROWEAK THEORY: II. ELECTROWEAK VORTICES AND GAUGE EQUIVALENCE

open access: yes, 1995
Vortex configurations in the electroweak gauge theory are investigated. Two gauge-inequivalent solutions of the field equations, the Z and W vortices, have previously been found. They correspond to embeddings of the abelian Nielsen-Olesen vortex solution
MacDowell, Samuel W., Törnkvist, Ola
core   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Coinvasion-Coexistence Traveling Wave Solutions of an Integro-Difference Competition System [PDF]

open access: yes, 2013
This paper is concerned with the traveling wave solutions of an integro-difference competition system, of which the purpose is to model the coinvasion-coexistence process of two competitors with age structure.
Lin, Guo, Pan, Shuxia
core  

Multi-Level Steganography: Improving Hidden Communication in Networks

open access: yes, 2012
The paper presents Multi-Level Steganography (MLS), which defines a new concept for hidden communication in telecommunication networks. In MLS, at least two steganographic methods are utilised simultaneously, in such a way that one method (called the ...
Fraczek, Wojciech   +2 more
core   +2 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

On second order periodic boundary-value problems with upper and lower solutions in the reversed order

open access: yesElectronic Journal of Differential Equations, 2006
In this paper, we study the differential equation with the periodic boundary value $$displaylines{ u''(t)=f(t, u(t), u'(t)),quad tin [0, 2pi]cr u(0)=u(2pi), quad u'(0)=u'(2pi).
Haiyin Gao   +3 more
doaj  

Positive solutions for nonlinear Caputo-Hadamard fractional differential equations [PDF]

open access: yesSurveys in Mathematics and its Applications, 2021
n this paper we study the existence and uniqueness of positive solutions for a class of nonlinear Caputo-Hadamard fractional differential equations by using the method of upper and lower solutions and Schauder and Banach fixed point theorems.
Salim Hamida   +2 more
doaj  

Rate Balancing in Full-Duplex MIMO Two-Way Relay Networks

open access: yes, 2019
Maximizing the minimum rate for a full-duplex multiple-input multiple-output (MIMO) wireless network encompassing two sources and a two-way (TW) relay operating in a two hop manner is investigated. To improve the overall performance, using a zero-forcing
Akhlaghi, Soroush   +2 more
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

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