Results 91 to 100 of about 180,326 (375)

Fisher-KPP dynamics in diffusive Rosenzweig-MacArthur and Holling-Tanner models

, 2019
We prove the existence of traveling fronts in diffusive Rosenzweig-MacArthur and Holling-Tanner population models and investigate their relation with fronts in a scalar Fisher-KPP equation. More precisely, we prove the existence of fronts in a Rosenzweig-
Cai, Hong, Ghazaryan, Anna, Manukian, Vahagn   +2 more
core   +1 more source

From Brittle to Flexible: Influence of Glucose‐Based Additives on Cellulose Nanocrystal Self‐Assembly in Suspension and Dried Photonic Films

Advanced Optical Materials, EarlyView.
Cellulose nanocrystals (CNCs) self‐assemble in aqueous suspension into chiral nematic liquid crystals, resulting in structurally colored films upon drying. Here, the influence of sugar additives on CNC self‐assembly in suspension and in films are studied.
Buse Tatli, Alexandra R. Rousseau, Wenkui Xing, Matteo Hirsch, Emily D. Cranston, Tiffany Abitbol   +5 more
wiley   +1 more source

Self-optimization, community stability, and fluctuations in two individual-based models of biological coevolution

, 2007
We compare and contrast the long-time dynamical properties of two individual-based models of biological coevolution. Selection occurs via multispecies, stochastic population dynamics with reproduction probabilities that depend nonlinearly on the ...
A. Roberts, B. Drossel, B. Drossel, C. Wills, C.E. Shannon, D. Alonso, D. Chowdhury, G. Caldarelli, G. Hardin, H. Haken, H. Kawanabe, I. Volkov, J. Bascompte, J. Dunne, J.A.J. Metz, J.D. Crawford, J.D. Murray, J.L. Bronstein, J.L. Crosby, J.N. Thompson, J.N. Thompson, K. Christensen, K. Sato, K. Tokita, M. Eigen, M. Eigen, M. Hall, M. Paczuski, M.E.J. Newman, M.E.J. Newman, M.E.J. Newman, N. Goldenfeld, P. Bak, P.A. Rikvold, P.C. Hohenberg, P.F. Verhulst, P.J. den Boer, Per Arne Rikvold, R.A. Armstrong, R.K.P. Zia, R.V. Solé, S. Gavrilets, S. Gavrilets, S. Gavrilets, S. Gavrilets, S. Gavrilets, S. Pigolotti, S.A. di Collobiano, S.A. Kauffman, S.A. Kauffman, S.H. Strogatz, S.N. Dorogovtsev, T. Yoshida, V. Sevim, W.H. Press   +54 more
core   +1 more source

Enhanced Trapping with an Optimized Graphene‐Based Bowtie Plasmonic Nanotweezer: Design, Analysis, and Bioanalytical Applications

Advanced Photonics Research, EarlyView.
A graphene‐based bowtie plasmonic nanotweezer is designed and optimized using particle swarm optimization and transfer matrix analysis. The structure achieves strong field confinement, delivering trapping forces up to 6 nN W−1 for 10 nm bioparticles with sixfold lower power requirements than conventional designs.
Saba Ebrahimpanah, Mohammad Hazhir Mozaffari, Ali Farmani   +2 more
wiley   +1 more source

Dynamics for a Ratio-Dependent Prey–Predator Model with Different Free Boundaries

Mathematics
In this paper, we study the dynamics of the ratio-dependent type prey–predator model with different free boundaries. The two free boundaries, determined by prey and predator, respectively, implying that they may intersect with each other as time evolves,
Lingyu Liu, Xiaobo Li, Pengcheng Li
doaj   +1 more source

Dynamics of a modified Leslie-Gower predator-prey model with Allee effect on the prey and a generalist predator [PDF]

, 2020
Claudio Arancibia–Ibarra, Jos
openalex   +1 more source

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

Advanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak, Shuhang Zhang, Alexander Keller, Qiukai Qi, Jonathan Rossiter, Dario Floreano   +5 more
wiley   +1 more source

Stable scalable control of soliton propagation in broadband nonlinear optical waveguides

, 2017
We develop a method for achieving scalable transmission stabilization and switching of $N$ colliding soliton sequences in optical waveguides with broadband delayed Raman response and narrowband nonlinear gain-loss.
Huynh, Toan T., Nguyen, Quan M., Peleg, Avner   +2 more
core   +1 more source

Comprehensive Profiling of N6‐methyladnosine (m6A) Readouts Reveals Novel m6A Readers That Regulate Human Embryonic Stem Cell Differentiation

Advanced Science, EarlyView.
This research deciphers the m6A transcriptome by profiling its sites and functional readout effects: from mRNA stability, translation to alternative splicing, across five different cell types. Machine learning model identifies novel m6A‐binding proteins DDX6 and FXR2 and novel m6A reader proteins FUBP3 and L1TD1.
Zhou Huang, Rucong Liu, Zibaguli Wubulikasimu, Wanqing Zhao, Jiaqi Huang, Jiaxuan Wang, Tianyuan Zhang, Rui Fan, Wei Kong, Qinghua Cui, Yang Li, Yuan Zhou   +11 more
wiley   +1 more source

The Dynamics of a Delayed Predator-Prey Model with Double Allee Effect

Discrete Dynamics in Nature and Society, 2015
We study the dynamics of a delayed predator-prey model with double Allee effect. For the temporal model, we showed that there exists a threshold of time delay in predator-prey interactions; when time delay is below the threshold value, the positive ...
Boli Xie, Zhijun Wang, Yakui Xue, Zhenmin Zhang   +3 more
doaj   +1 more source