Results 71 to 80 of about 2,115,973 (229)

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping

Advanced Science, EarlyView.
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Alec Boron, Bokun Zheng, Ziyang Zhou, Noel Naughton, Suyi Li   +4 more
wiley   +1 more source

Bistable Networks Enable Complex Shape Changes

Advanced Science, EarlyView.
Transition‐controlled metamaterials are networks of bistable mechanical memory that store local binary states and express them as global shape change. By decoupling low‐force programming from high‐force holding, a single lattice is reconfigured into distinct 2D profiles and 3D surfaces without continuous actuation, enabling reusable morphing materials ...
Sawyer Thomas, Jeffrey Lipton
wiley   +1 more source

A review of tip apex distance in dynamic hip screw fixation of osteoporotic hip fractures

, 2014
Fractured neck of femur is a common problem seen in elderly osteoporotic females, mostly in Western countries, among which are the extra‑capsular fractures such as intertrochanteric and pertrochanteric fractures also known as peritrochanteric fractures ...
Abdulkareem, Imran Haruna
core   +1 more source

6.1% Volumetric Negative Thermal Expansion Induced by the Reversible Reconstructive Phase Transition in Pb‐Free Bi1−xLnxCoO3 (Ln: Lanthanoid)

Advanced Science, EarlyView.
Perovskite‐type oxide lanthanoid‐substituted BiCoO3 exhibits a reversible negative thermal expansion (NTE) originated from the coordination change from the CoO5 pyramid to the CoO6 octahedron due to melting of the dxy orbital ordering in the d6 electron configuration, and the 6.1% volume shrinkage in Bi0.82Nd0.18CoO3 is the largest ever observed in the
Yuki Sakai, Kazuki Takahashi, Shogo Wakazaki, Takumi Nishikubo, Jun Miyake, Takehiro Koike, Teppei Nagase, Takafumi Yamamoto, Kano Hatayama, Masaichiro Mizumaki, Masaki Azuma   +10 more
wiley   +1 more source

A comparison of accuracy between indirect digital imaging and conventional radiography in measuring the distance from file tip to radiographic apex by means of CBCT [PDF]

Background & Objective: Accurate working length determination of root canal is always considered by dentists. Radiographic techniques that commonly used in root canal therapy are periapical conventional techniques, but recently advanced techniques have ...
میکاییلی خیاوي, حسام, زندیان, حامد, قادری, مریم, نورالعیونی, احمد   +3 more
core  

Switching Spike Plasticity Shapes ACE2 Engagement Across SARS‐CoV‐2 Variants

Advanced Science, EarlyView.
Conformational plasticity governs SARS‐CoV‐2 spike function and ACE2 recognition. Using high‐speed AFM and single‐molecule force spectroscopy, we analyzed the ancestral spike and nine variants, revealing progressive rigidification from Delta, variable plasticity in Omicron sublineages, and JN.1 compaction.
Sarah Stainer, Rong Zhu, Manuel Reithofer, Gerhard Stadlmayr, Katharina Stadlbauer, Panchika Prangkio, Christoph Rippel, Markus Hahn, Aniko Eva Kasztner, Stefanie Stohl, Petr Bednar, Daniel Ruzek, David Glück, Robert Tampé, Gordana Wozniak‐Knopp, Yoo Jin Oh, Miriam Klausberger, Peter Hinterdorfer   +17 more
wiley   +1 more source

Exploring the generalizability of wire navigation skills attained through simulator training

OTA International
. Background:. Wire navigation is a common skill used in a variety of core orthopaedic procedures. Our team previously developed a simulator to train residents on this skill and have shown that skills developed on the simulator transfer to the operating ...
Steven Long, PhD, Jared J. Hill, MS, Donald D. Anderson, PhD, Geb W. Thomas, PhD, Matthew D. Karam, MD   +4 more
doaj   +1 more source

SynNotch Receptors for Visualizing Immunoreceptor Force Transmission and Downstream Signaling In Vivo

Advanced Science, EarlyView.
A mechanically activated SynNotch reporter platform enables detection of force transmission through receptors as they mediate immune cell interactions. Targeting CD40 on B cells and TCR on T cells records force‐induced reporter activation across 2D coculture, 3D organoid, and implanted in mice, which also reveal force‐amplification of immune receptor ...
Menglan Li, Jintian Lyu, Kaitao Li, Ameya Dravid, Deepali Balasubramani, Amir H. K. Ashkezari, Hyun‐Kyu Choi, Gabriel A. Kwong, Ankur Singh, Cheng Zhu   +9 more
wiley   +1 more source

Influence of Grating Parameters on the Field Enhancement of an Optical Antenna under Laser Irradiation [PDF]

Journal of Optoelectronical Nanostructures, 2019
In this study, a new approach for simulation of electric field enhancement ofplane wave laser around optical antenna was used to convert free-propagating opticalradiation to localized energy.
Mohammad Reza Mohebbifar, Mehdi Zohrabi
doaj  

Teaching basic trauma: validating FluoroSim, a digital fluoroscopic simulator for guide-wire insertion in hip surgery

Acta Orthopaedica, 2018
Background and purpose — Simulation is an adjunct to surgical education. However, nothing can accurately simulate fluoroscopic procedures in orthopedic trauma. Current options for training with fluoroscopy are either intraoperative, which risks radiation,
Kapil Sugand, Robert A Wescott, Richard Carrington, Alister Hart, Bernard H Van Duren   +4 more
doaj   +1 more source