Results 81 to 90 of about 148,119 (340)

3D‐Printed Multidimensional Bionic Mg‐MC/PLGA Composite for Tailored Repair of Segmental Long Bone Defects

Advanced Healthcare Materials, EarlyView.
This study develops 3D‐printed Mg‐MC/PLGA scaffolds with varying Mg concentrations (0–20%). The 5% Mg scaffold shows optimal cytocompatibility, osteogenic activity in vitro, and significantly enhances bone regeneration in rabbits, improving bone volume and mechanical strength.
Shihang Liu, Shuai Zhou, Tingting Zou, Guangzhao Hou, Qian Xiao, Lin Li, Jianjun Yang, Wei Chen, Yingze Zhang, Hongzhi Lv   +9 more
wiley   +1 more source

Bifurcation Analysis of a Class of Two-Delay Lotka–Volterra Predation Models with Coefficient-Dependent Delay

Mathematics
In this paper, a class of two-delay differential equations with coefficient-dependent delay is studied. The distribution of the roots of the eigenequation is discussed, and conditions for the stability of the internal equilibrium and the existence of ...
Xiuling Li, Haotian Fan
doaj   +1 more source

Upconversion Nanoparticle‐Covalent Organic Framework Core–shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging

Advanced Materials, EarlyView.
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim, Paul Wrede, Andrés Rodríguez‐Camargo, Yi Chen, Nihal Olcay Dogan, Chaim Glück, Bettina V. Lotsch, Daniel Razansky, Metin Sitti   +8 more
wiley   +1 more source

Frequency bifurcation in a series-series compensated fractional-order inductive power transfer system

Journal of Advanced Research, 2020
This paper reveals and analyzes the frequency bifurcation phenomena in the fractional-order inductive power transfer (FOIPT) system with series-series compensation topology.
Xujian Shu, Bo Zhang, Chao Rong, Yanwei Jiang   +3 more
doaj   +1 more source

DNA‑Directed Assembly of Photonic Nanomaterials for Diagnostic and Therapeutic Applications

Advanced Materials, EarlyView.
DNA‐directed assembly offers a powerful strategy for constructing structured photonic nanomaterials with precise spatial control. This review provides a comprehensive overview of recent advancements in DNA‐assembled photonic nanomaterials for diagnostics and therapeutics, highlighting key design principles, functionalization strategies, and optical ...
Longjiang Ding, Bing Liu, Andreas Peil, Sisi Fan, Jie Chao, Na Liu   +5 more
wiley   +1 more source

Global stability and bifurcation analysis of a delayed predator-prey system with prey immigration

Electronic Journal of Qualitative Theory of Differential Equations, 2016
A delayed predator-prey system with a constant rate immigration is considered. Local and global stability of the equilibria are studied, a fixed point bifurcation appears near the boundary equilibrium and Hopf bifurcation occurs near the positive ...
Gang Zhu, Junjie Wei
doaj   +1 more source

An Inverse Problem in Bifurcation Theory

Journal of Differential Equations, 1993
Consider the boundary value problem (1) \({d^ 2u \over dx^ 2}+ \lambda u=uf(u ...
openaire   +3 more sources

Global Hopf bifurcation for differential-algebraic equations with state dependent delay

, 2017
We develop a global Hopf bifurcation theory for differential equations with a state-dependent delay governed by an algebraic equation, using the $S^1$-equivariant degree.
Hu, Qingwen
core   +1 more source

Microstructural Evolution Dynamics in Rapid Joule Heating Densification of High‐Nickel Cathodes

Advanced Materials, EarlyView.
Introduction of high‐temperature rapid Joule heating combined with two‐step sintering drives full densification while suppressing grain coarsening in high‐Ni cathodes. By activating lattice and grain boundary diffusion over surface diffusion, this approach achieves dense microstructures without excessive grain growth, offering insights into the ...
Min‐Ho Kim, Jeongwoo Seo, Jaeyong Shin, Eunyoung Park, Ahreum Choi, Myeongjun Choi, Euna Kim, Su Yong Lee, Wooyoung Jin, Sang‐Chae Jeon, Yuzhang Li, Changyong Song, Rodney S. Ruoff, Won Kyung Seong, Sunghwan Jin, Hyun‐Wook Lee   +15 more
wiley   +1 more source

Coexistence of steady state for a diffusive prey-predator model with harvesting

Electronic Journal of Differential Equations, 2016
In this article, we study a diffusive prey-predator model with modified Leslie-Gower term and Michaelis-Menten type prey harvesting, subject to homogeneous Dirichlet boundary conditions.
Yan Li
doaj