Results 81 to 90 of about 2,106,842 (293)

Early experience using 3-D printed locking drill guides for transpedicular screw fixation in scoliosis

open access: yesInterdisciplinary Neurosurgery
Introduction:  The preparation of the pedicle and the insertion of a transpedicular screw is a high-risk procedure during spine surgeries. To avoid pedicle screw misplacement in posterior spinal deformity surgery, patient specific 3D‐printed guides can ...
Rafael Augusto Azuero Gonzalez   +6 more
doaj   +1 more source

Multivariate risks and depth-trimmed regions [PDF]

open access: yes, 2006
Acceptance set, Cone, Depth-trimmed region, Multivariate risk, Risk measure, 91B30, 91B82, 60D05, 62H99, C60, C61,
Molchanov, Ilya   +4 more
core   +2 more sources

Continuum Robots in Surgery: From Engineering Design to Clinical Practice

open access: yesAdvanced Robotics Research, EarlyView.
The hyper‐redundant nature of continuum robot structures enables near‐infinite degrees of freedom leading to immense potential for medical applications. This review provides a historical background of continuum robots and novel ideas shaping their progress to current structural design, sensing technology, modeling techniques, and control methods.
Griffin Smith   +6 more
wiley   +1 more source

Recent advances in ultrafast optical parametric oscillator frequency combs [PDF]

open access: yes, 2014
We discuss recent advances in the stabilization and application of femtosecond frequency combs based on optical parametric oscillators (OPOs) pumped by femtosecond lasers at 800 and 1060 nm.
Reid, Derryck T.; id_orcid   +2 more
core   +1 more source

WorMa: An Undulatory Robot With Center of Mass Regulation via Internal Fluid Redistribution for Amphibious Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
WorMa is an amphibious undulatory robot that uses Center of Mass redistribution as the sole terrain adaptation mechanism. This mechanism is based on internal fluid mass redistribution through a pump‐driven latex balloon system that creates three profiles: head‐biased, balanced, and tail‐biased.
Daniil Filimonov, Nana Obayashi
wiley   +1 more source

Suture locking of isolated internal locking knotless suture anchors is not affected by bone quality

open access: yes, 2015
Jarret M Woodmass,1 Graeme Matthewson,1 Yohei Ono,1,2 Aaron J Bois,1 Richard S Boorman,1 Ian KY Lo,1 Gail M Thornton1,31Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB,
Bois AJ   +6 more
core  

Depth perception with gaze-contingent depth of field [PDF]

open access: yes, 2014
Blur in images can create the sensation of depth because it emulates an optical property of the eye; namely, the limited depth of field created by the eye's lens. When the human eye looks at an object, this object appears sharp on the retina, but objects
Miguel A. Nacenta   +9 more
core   +1 more source

A Transnasal Endoscope for Robotically Assisted Gastroscopy

open access: yesAdvanced Robotics Research, EarlyView.
This work introduces a 4.25 mm diameter magnetically navigated transnasal endoscope for upper gastrointestinal (GI) screening and intervention. The system enables precise remote steering throughout the upper GI tract and is demonstrated through in vitro and in vivo experiments, including the robotic execution of preprogrammed retroflexions, trans ...
Alexandre Mesot   +6 more
wiley   +1 more source

Mode-Locked Er-Doped Fiber Laser by Using MoS2/SiO2 Saturable Absorber

open access: yesNanoscale Research Letters, 2019
The two-dimensional (2D) layered material MoS2 has attracted numerous attentions for electronics and optoelectronics applications. In this work, a novel type of MoS2-doped sol-gel glass composite material is prepared.
Lu Li   +6 more
doaj   +1 more source

Nanosecond channel-switching exact optical frequency synthesizer using an optical injection phase-locked loop (OIPLL) [PDF]

open access: yes, 2004
Experimental results are reported on an optical frequency synthesizer for use in dynamic dense wavelength-division-multiplexing networks, based on a tuneable laser in an optical injection phase-locked loop for rapid wavelength locking.
Duser, M   +6 more
core  

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