Results 71 to 80 of about 6,114,153 (354)

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

The Bifurcation of Two Invariant Closed Curves in a Discrete Model

Discrete Dynamics in Nature and Society, 2018
A discrete population model integrated using the forward Euler method is investigated. The qualitative bifurcation analysis indicates that the model exhibits rich dynamical behaviors including the existence of the equilibrium state, the flip bifurcation,
Yingying Zhang, Yicang Zhou
doaj   +1 more source

Rayleigh-B\'{e}nard convection in a homeotropically aligned nematic liquid crystal

, 1998
We report experimental results for convection near onset in a thin layer of a homeotropically aligned nematic liquid crystal heated from below as a function of the temperature difference $\Delta T$ and the applied vertical magnetic field $H$ and compare ...
A. Oberbeck, A. Schlüter, C. M. Surko, C. W. Meyer, D. T. J. Hurle, E. Bodenschatz, E. Bodenschatz, E. Guyon, E. L. Koschmieder, F. Busse, F. H. Busse, G. Ahlers, G. Ahlers, G. Ahlers, G. Ahlers, G. Ahlers, G. Ahlers, Guenter Ahlers, H. Bénard, H. Bénard, H. Lekkerkerker, H. Lekkerkerker, J. Cognard, L. Kramer, L. M. Blinov, Leif Thomas, M. C. Cross, M. Velarde, P. Barratt, P. Barratt, P. G. de Gennes, P. J. Barratt, Q. Feng, Werner Pesch, Y. Pomeau   +34 more
core   +1 more source

Porous Decellularized Nerve Grafts Facilitate Recellularization and Nerve Regeneration in a Rat Model of Critical Long‐Gap Peripheral Nerve Injury

Advanced Healthcare Materials, EarlyView.
A decellularized nerve graft (DNG) is modified to generate a porous DNG (PDNG). The PDNG is used to repair a 30‐mm peripheral nerve injury (PNI) defect, and is compared with isograft, serving as the standard, and DNG, a widely used alternative. The result shows that PDNG facilitated nerve regeneration in long‐gap PNI, evidenced by better‐aligned axonal
Olawale Alimi Alimi, Mitchell Kuss, Wen Xue, Bo Liu, Mena Asha Krishnan, Tianshu Pan, Zhi He, Han‐Jun Wang, Yuguo Lei, Kai Yang, Bin Duan   +10 more
wiley   +1 more source

A blue sky catastrophe in double-diffusive convection

, 2004
A global bifurcation of the blue sky catastrophe type has been found in a small Prandtl number binary mixture contained in a laterally heated cavity. The system has been studied numerically applying the tools of bifurcation theory.
E. Knobloch, Esteban Meca, Isabel Mercader, J. Bhattacharjee, J. Guckenheimer, J. Turner, L. Shilnikov, Laureano Ramírez-Piscina, Oriol Batiste, Y. Kuznetsov   +9 more
core   +1 more source

Manipulating Ferroelectric Topological Polar Structures with Twisted Light

Advanced Materials, EarlyView.
We demonstrate dynamic control of ferroelectric order in quasi‐2D CsBiNb2O7 using twisted ultraviolet light carrying orbital angular momentum. Our approach harnesses non‐resonant multiphoton absorption and induced strain to modulate topological of ferroelectric polarization textures.
Nimish P. Nazirkar, Viet Tran, Pascal Bassène, Atoumane Ndiaye, Julie Barringer, Jie Jiang, Wonsuk Cha, Ross Harder, Jian Shi, Moussa N'Gom, Edwin Fohtung   +10 more
wiley   +1 more source

Bifurcation analysis based on a material model with stress-rate dependency and non-associated flow rule for fracture prediction in metal forming [PDF]

, 2017
Recent increasing application of advanced high-strength metals causes grow-ing demand for accurate fracture prediction in metal forming simulation. However, since the construction of objective and reliable fracture prediction method is generally difficult,
Ito, Koichi, Mori, Naomichi, Oya, Tetsuo, Uemura, Gen, Yanagimoto, Jun   +4 more
core  

Some New Results on Charged Compact Boson Stars

, 2017
In this work we present some new results obtained in a study of the phase diagram of charged compact boson stars in a theory involving a complex scalar field with a conical potential coupled to a U(1) gauge field and gravity.
Kahlen, Sarah, Kulshreshtha, Daya Shankar, Kulshreshtha, Usha, Kumar, Sanjeev, Kunz, Jutta   +4 more
core   +2 more sources

A Highly Adaptable Hydrogen Bond Re‐Orientation (HyBRO) Strategy for Multiscale Vasculature Fabrication

Advanced Materials, EarlyView.
A novel hydrogen bond re‐orientation (HyBRO) strategy enables three‐dimensional (3D) printing of vascular microchannel networks with high accuracy. By switching sacrificial material interactions with nonsolvents, HyBRO prevents swelling and deformation, enabling accurate hierarchical channels spanning a tenfold size range.
Zhencheng Liao, Yu Liu, Chonghao Chen, Iek Man Lei, Lei Dong, Chunming Wang   +5 more
wiley   +1 more source

Periodic orbits for an autonomous version of the Duffing–Holmes oscillator

Nonlinear Analysis
In the autonomous Duffing–Holmes oscillator, the existence of periodic orbits was detected numerically. Using the Hopf bifurcation theory, we prove analytically that such periodic orbits exist.
Guangfeng Dong, Jaume Llibre
doaj   +1 more source