Results 141 to 150 of about 460,798 (307)
Existence of positive periodic solutions for neutral functional differential equations
Electronic Journal of Differential Equations, 2006 We find sufficient conditions for the existence of positive periodic solutions of two kinds of neutral differential equations. Using Krasnoselskii's fixed-point theorem in cones, we obtain results that extend and improve previous results.
Zhixiang Li, Xiao Wang
doaj
Advanced Materials Interfaces, EarlyView.Strongly adhered cells align with concentric circular ridges and exhibit predominantly tangential motion, whereas weakly adhered cells fail to follow topographical guidance and display enhanced radial inward motion. ABSTRACT Living cells establish long‐range orientational order through collective alignment, giving rise to topological defects whose ...
Prasoon Awasthi +4 more
wiley +1 more source
Electronic Journal of Differential Equations, 2016 In this article, we show the existence of three positive symmetric solutions for the integral boundary-value problem with $\phi$-Laplacian $$\displaylines{ (\phi(u'(t)))'+f(t,u(t),u'(t))=0,\quad t\in[0,1],\cr u(0)=u(1)=\int_0^1u(r)g(r)\,dr ...
Yonghong Ding
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Recent Advances of Slip Sensors for Smart Robotics
Advanced Materials Technologies, EarlyView.This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang +8 more
wiley +1 more source
Existence of solutions for a coupled quasilinear system on time scales
Electronic Journal of Differential Equations, 2011 In this work we study a quasilinear system of equations on time scales. Using the Krasnoselskii fixed-point theorem, sufficient conditions are given for the existence of positive solutions.
Moulay Rchid Sidi Ammi +1 more
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3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice
Advanced Materials Technologies, EarlyView.We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona +6 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This review summarizes moisture‐adaptive strategies that enable triboelectric nanogenerators (TENGs) to operate across diverse moisture conditions. It examines moisture‐management methods, including exclusion, directional transport, removal, and utilization, with charge‐regulation approaches based on interfacial, dielectric, and structural engineering.
Junzhe Gan +4 more
wiley +1 more source
Positive solutions for the beam equation under certain boundary conditions
Electronic Journal of Differential Equations, 2005 We consider a boundary-value problem for the beam equation, in which the boundary conditions mean that the beam is embedded at one end and fastened with a sliding clamp at the other end.
Bo Yang
doaj
Advanced Materials Technologies, EarlyView.A magnetically reconfigurable airflow sensor integrated with an airway stent enables tunable sensitivity and dynamic sensing range. Airflow‐induced cantilever deformation generates resistance changes, while an external magnetic field modulates sensor stiffness, enhancing sensitivity at low airflow velocities and extending the sensing range at higher ...
Darren Wang +10 more
wiley +1 more source