Results 21 to 30 of about 13,143 (213)

On the Dynamics of a General Predator-Prey System [PDF]

Journal of Mathematics and Statistics, 2011
Problem statement: In this study a general two dimensional predator-prey model is considered. The dynamic and existence of equilibrium points are studied. Conclusion/Recommendations: Hopf bifurcation is discussed. The existence and uniqueness of limit cycles is proved. Special cases are considered to justify our results.
M. M.A. El-Sheikh, Z. M. Alaofy, S. A.A. El-Marouf   +2 more
openaire   +2 more sources

Challenges of Soft Tissue Integration Around Dental Implants and Strategies Based on Material Surface Modification

Advanced Materials Interfaces, EarlyView.
Peri‐implant soft tissue integration (STI), weaker than natural teeth, raises peri‐implant disease risk. Gingival‐region material surface properties critically modulate soft‐tissue responses, driving surface modifications to enhance STI. This review provides an in‐depth analysis of the challenges of STI around dental implants, comprehensively reviews ...
Shasha Jia, Hanqing Zhao, Yingliang Song, Yong Sun, Guowei Wang, Xiaojing Wang   +5 more
wiley   +1 more source

Preferential Membrane Remodeling on Curved Biointerfaces Induced by Conjugated Oligoelectrolyte

Advanced Materials Interfaces, EarlyView.
This study explores how membrane shape influences the interaction of conjugated oligoelectrolytes (COEs) with lipid bilayers. Using a curved biointerface composed of nanobar arrays and supported lipid bilayers, it is revealed that COE intercalation preferentially remodels curved regions, forming distinct structures. These findings highlight the role of
Xinwen Miao, Samuel Jun Wei Chan, Sian Kang Chong, Xiangfu Guo, James Chin Shing Ho, Atul N. Parikh, Guillermo Carlos Bazan, Wenting Zhao   +7 more
wiley   +1 more source

Modulating Stiffness and Shape of a Soft, Textile‐Based Structure Through Glass Transition of a Conductive Phase‐Changing Polymer

Advanced Materials Technologies, EarlyView.
A variable stiffness structure with shape morphing and shape memory capabilities made from layered textiles and 3D printing material is developed. Direct printing of cPLA on textile electrodes maximizes the electrodes' contact area. This work presents a new method for achieving variable stiffness in small segments of soft, deformable structures, using ...
Johannes Frey, John Nassour, Gordon Cheng   +2 more
wiley   +1 more source

Enhanced Two‐Photon Excited Emission of Quantum Emitters by Colloidal Plasmonic Metasurfaces

Advanced Photonics Research, EarlyView.
Colloidal plasmonic metasurfaces presenting a completely exposed optical cavity are fabricated via templated self‐assembling silver nanoparticles into squared arrays on top of a thin film of CdSe/ZnS quantum dots. The resulting structure promotes the enhancement of the two‐photon absorption and emission processes of the quantum emitter by exploiting ...
Ylli Conti, Xing He, Yen‐Chen Chen, Naihao Chiang, Leonardo Scarabelli   +4 more
wiley   +1 more source

Predator–Prey Behavior of Droplets Propelling Through Self‐Generated Channels in Crystalline Surfactant Layers

Angewandte Chemie, EarlyView.
A crystalline layer is formed by an amphiphilic decylamine surfactant at the air/water interface. Aldehyde‐containing ester oil droplets self‐propel by consuming amines from the crystalline layer, thereby generating open channels along which myelin‐forming amphiphile droplets chase and ultimately catch the aldehyde droplets in a predator–prey analogy ...
Priyanshu Singh, Peter A. Korevaar
wiley   +2 more sources

Modulating Signal Generation in Aptamer‐Based CNT‐FET Biosensors by Controlling the Functionalization Route

Advanced Sensor Research, EarlyView.
The impact of different assembly strategies is discussed on the performance of nanoscale aptamer‐based SWCNT‐FET biosensors. By combining electrical and optical characterization, this is revealed that how aptamer conformation affects local electrostatic changes within the Debye length, leading to distinct sensor responses.
Haosen Miao, Gririraj Manoharan, Ahran Lim, Peter Mirau, Jorge L. Chávez, Chang‐Seuk Lee, Matteo Palma   +6 more
wiley   +1 more source

Evolutionary dynamics of predator-prey systems: an ecological perspective [PDF]

Journal of Mathematical Biology, 1996
Evolution takes place in an ecological setting that typically involves interactions with other organisms. To describe such evolution, a structure is needed which incorporates the simultaneous evolution of interacting species. Here a formal framework for this purpose is suggested, extending from the microscopic interactions between individuals--the ...
Marrow, P., Dieckmann, U., Law, R.
openaire   +5 more sources

FMint: Bridging Human Designed and Data Pretrained Models for Differential Equation Foundation Model for Dynamical Simulation

Advanced Theory and Simulations, EarlyView.
FMint is introduced as a multi‐modal foundation model that integrates human‐designed solvers and data‐driven methods for fast, accurate simulation of dynamical systems. FMint leverages in‐context learning within a transformer‐based framework to refine coarse numerical solutions.
Zezheng Song, Jiaxin Yuan, Haizhao Yang
wiley   +1 more source

The effect of seasonal strength and abruptness on predator–prey dynamics

Journal of Theoretical Biology, 2020
Coupled dynamical systems in ecology are known to respond to the seasonal forcing of their parameters with multiple dynamical behaviours, ranging from seasonal cycles to chaos. Seasonal forcing is predominantly modelled as a sine wave but the transition between seasons is often more sudden.
Alix M.C. Sauve, Rachel A. Taylor, Frédéric Barraquand   +2 more
openaire   +5 more sources