Results 111 to 120 of about 26,639 (292)

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

Retouched notches at Combe Grenal (France) and the Reduction Hypothesis

, 2015
A detailed attribute analysis of notched flakes from upper layers of Combe Grenal, a key site in the debates about the nature of Middle Paleolithic assemblage variation in France, is used to evaluate the applicability to Combe Grenal of the reduction ...
Clarkson, Christoper J, Hiscock, Peter
core  

Boosting domain wall propagation by notches

, 2015
We report a counterintuitive finding that notches in an otherwise homogeneous magnetic nanowire can boost current-induced domain wall (DW) propagation.
Wang, X. R., Yuan, H. Y.
core   +1 more source

Hybrid Continuum Robot Designs and Architectures for Healthcare Applications

Advanced Robotics Research, EarlyView.
Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir, Muhammad A. Khalid, Manish Chauhan, Pietro Valdastri, James H. Chandler   +4 more
wiley   +1 more source

Notch [PDF]

Current Biology, 2000
openaire   +2 more sources

Modulation of miR‐23b Wnt/β‐catenin Axis Strengthens Endothelial Barrier Properties

Advanced Science, EarlyView.
Early blood‐brain barrier (BBB) disruption contributes to stroke and CNS disease pathology. miR‐23b was identified as a regulator of BBB integrity in brain endothelial cells. Inhibition of miR‐23b enhanced barrier‐associated properties, promoted repair‐related signaling, and reduced BBB leakage in experimental stroke models, supporting further ...
Victor Anthony Martinez, Rose E. Presby, Sara Nakanishi, Pallavi Gaur, Ugur Akcan, Johannes Daugaard Krog, Iben Daugaard Krog, Lipi Das, David S. Johnson, Danny Jamoul, Douglas Jury, Brian Lawson, Jacob Körbelin, Lewis M. Brown, Vilas Menon, Dritan Agalliu, Irene Munk Pedersen   +16 more
wiley   +1 more source

Global sea-level rise and the disappearance of tidal notches

, 2012
The recent rise in global sea level is causing the disappearance of an important geomorphological sea-level indicator, the tidal notch.Tidal notches have often been used in carbonate coasts for Quaternary and late Holocene sea-level reconstructions and ...
Vassilopoulos, A., Pirazzoli, P.A., Kampolis, I., Evelpidou, N.   +3 more
core   +1 more source

Stomaching Notch [PDF]

The EMBO Journal, 2015
Xiaolei, Yin, Jeffrey M, Karp
openaire   +2 more sources

Notches in animal teeth - artifical or natural/pathological?

, 1998
Animal teeth with notches at the root are sometimes found in archeological contexts. The notches are often considered to have been artificially engraved and the teeth regarded as artifacts of personal adornment.
MÜLLER Hanns-Hermann

Auteur

MÜLLER
core  

Use of J-integral to predict static failures in sharp V-notches and rounded U-notches

, 2008
In the present paper, the physical meaning of JV (namely, the classic J-integral applied to either sharp V-notch) is discussed. Consider a Cartesian reference frame having the x-axis parallel to the notch bisector, each mode of JV, for a given circular ...
LIVIERI, Paolo
core   +1 more source