Results 81 to 90 of about 131,952 (276)

Nanomaterial‐Based Muscle Cell/Neural Tissue Biohybrid Robots: From Actuation to Biomedical Applications

open access: yesAdvanced Robotics Research, EarlyView.
Muscle cell‐based biohybrid robot using nanomaterials for function enhancement and neural function for biomedical applications. Biohybrid robotics, an emerging field combining biological tissues with artificial systems, has made significant progress in developing various biohybrid constructs, including muscle‐cell‐driven biorobots and microbots.
Minkyu Shin   +4 more
wiley   +1 more source

The Exact Solutions for a Point Mass Moving along a Stretched String on a Winkler Foundation

open access: yesShock and Vibration, 2014
This paper derives the exact solutions for a point mass moving along a stretched infinite string on a Winkler foundation at a constant velocity. The solutions for the contact force between the string and the mass are derived and then the displacement ...
Q. Gao   +3 more
doaj   +1 more source

Casimir Theory of the Relativistic Composite String Revisited, and a Formally Related Problem in Scalar QFT

open access: yes, 2012
The main part of this paper is to present an updated review of the Casimir energy at zero and finite temperature for the transverse oscillations of a piecewise uniform closed string.
Brevik, Iver
core   +1 more source

Miniaturized Magnetic Tip Design for Endoluminal Vine Robot Navigation

open access: yesAdvanced Robotics Research, EarlyView.
A magnetic tip mount is designed for a miniaturized 7 mm soft‐growing vine robot to enable wireless magnetic steering and onboard imaging, while preserving a 3 mm working channel. The internal–external ring magnets design balances magnetic attachment with low eversion pressure. Experiments demonstrate ±90° steering, 34 mm bending radius, and successful
Andrea Yanez Trujillo   +4 more
wiley   +1 more source

Chaotic dynamics of string around charged black brane with hyperscaling violation

open access: yesJournal of High Energy Physics, 2020
By fast Lyapunov indicator (FLI), we study the chaotic dynamics of closed string around charged black brane with hyperscaling violation (HV). The Hawking temperature, Lifshitz dynamical exponent and HV exponent together affect the chaotic dynamics of ...
Da-Zhu Ma   +3 more
doaj   +1 more source

Thermodynamic Properties of the Piecewise Uniform String

open access: yes, 1998
The thermodynamic free energy F is calculated for a gas whose particles are the quantum excitations of a piecewise uniform bosonic string. The string consists of two parts of length L_I and L_II, endowed with different tensions and mass densities ...
A A Bytsenko   +11 more
core   +1 more source

Engineered Living Systems With Self‐Organizing Neural Networks: From Anatomy to Behavior and Gene Expression

open access: yesAdvanced Science, EarlyView.
Ectodermal tissue excised from Xenopus embryos self‐organizes into a three‐dimensional mucociliary organoid. Here, we generate a neural variant, termed neurobot, by implanting neural precursor cells. Neurobots develop mature neurons, adopt distinct morphologies, exhibit more complex motility, and respond differentially to neuroactive compounds. Imaging
Haleh Fotowat   +6 more
wiley   +1 more source

Research of the Locating-Sub Hanging Technology for Velocity String

open access: yesShiyou jixie, 2019
After workover of low-yield gas wells in Qinghai, the existing velocity string snubbing technology has such problems as requiring additional special hanger, the main valve failed, and the wellhead and operation process needing reconstruction.
付悦   +6 more
doaj  

Cooperative Behavior and Pattern Formation in Mixtures of Driven and Nondriven Colloidal Assemblies

open access: yes, 2006
We simulate a disordered assembly of particles interacting through a repulsive Yukawa potential with a small fraction of the particles coupled to an external drive.
Reichhardt, C., Reichhardt, C. J. Olson
core   +1 more source

Stochastic Nanoscale Biophysical Cues as a Basis for the Induction of Glioblastoma‐Like Transcriptional Programs in Astrocytes

open access: yesAdvanced Science, EarlyView.
Stochastic nanoscale physical cues induce glioblastoma (GBM)‐associated transcriptional traits in naïve astrocytes leading to spontaneous formation of spheroids. Cells within spheroids express activated‐MMP2 and a differential gene expression pattern involving P53 and NOTCH3, providing evidence for a role for changes in brain topography, as observed in
Laurent Starck   +8 more
wiley   +1 more source

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