Results 21 to 30 of about 26,290 (267)

Laparoscopy & robotics: a historical parallel [PDF]

open access: yesRevista do Colégio Brasileiro de Cirurgiões, 2020
ABSTRACT The evolution of robotic platforms has brought up ethical, economic, educational, and clinical applicability issues that refer to the early 1990s, when laparoscopy began its dissemination as a technology that would revolutionize surgery. Introduced in Brazil since 1990, laparoscopy has received a lot of resistance from different sectors ...
openaire   +4 more sources

Kinematic Characteristics and Dynamics Analysis of an Overconstrained Scissors Double-Hoop Truss Deployable Antenna Mechanism Based on Screw Theory

open access: yesIEEE Access, 2019
Large diameter space deployable antenna is the key equipment for communication and data transmission between spacecraft and base stations on earth. Based on the overconstrained scissors mechanism, a double-hoop truss deployable antenna mechanism is ...
Bo Han   +4 more
doaj   +1 more source

Kinematic and dynamic characteristics' analysis of a scissor multi-rod ring deployable mechanism [PDF]

open access: yesMechanical Sciences, 2023
In this paper, the authors developed a double-layer ring truss deployable antenna mechanism (RTDAM) based on a scissor unit, which can be used as the deployment and support mechanism in large-aperture satellite antenna. Firstly, three configuration state
B. Han   +9 more
doaj   +1 more source

Configuration Design of an Upper Limb Rehabilitation Robot with a Generalized Shoulder Joint

open access: yesApplied Sciences, 2021
For stroke patients with upper limb motor dysfunction, rehabilitation training with the help of rehabilitation robots is a social development trend. Existing upper limb rehabilitation robots have difficulty fully fitting the complex motion of the human ...
Hao Yan   +6 more
doaj   +1 more source

Adaptive Admittance Control Scheme with Virtual Reality Interaction for Robot-Assisted Lower Limb Strength Training

open access: yesMachines, 2021
Muscle weakness is the primary impairment causing mobility difficulty among stroke survivors. Millions of people are unable to live normally because of mobility difficulty every year.
Musong Lin   +6 more
doaj   +1 more source

Automation, parallelism, and robotics for proteomics [PDF]

open access: yesPROTEOMICS, 2006
AbstractThe speed of the human genome project (Lander, E. S., Linton, L. M., Birren, B., Nusbaum, C. et al., Nature 2001, 409, 860–921) was made possible, in part, by developments in automation of sequencing technologies. Before these technologies, sequencing was a laborious, expensive, and personnel‐intensive task.
Gil, Alterovitz   +3 more
openaire   +2 more sources

Fluid–Structure Coupling and Aerodynamic Performance of a Multi-Dimensional Morphing Wing with Flexible Metastructure Skin

open access: yesAerospace, 2023
A multi-dimensional morphing wing skeleton mechanism is proposed with double-sided triangular pyramid units, which can realize continuous variable span-wise bend, span-wise twist, and sweep.
Hui Yang   +3 more
doaj   +1 more source

Parallel Robot

open access: yes, 2022
The need to high performance, stability, and dexterity robot is the main motivation to improve industrial robots, parallel robots are general-purpose industrial robots, that can give all previous needs with high accuracy. In this paper, a detailed review of parallel robotics is submitted, the paper depends on the latest researches and books related to ...
openaire   +1 more source

Configuration synthesis of hoop truss deployable mechanisms for space antenna based on screw theory

open access: yesAIP Advances, 2019
Hoop truss deployable antenna can realize the communication and data transmission between satellite and earth, which is an important type of satellite antennas, and its configuration design is currently one of the research hotspots in the field of ...
Bo Han   +5 more
doaj   +1 more source

Design and dynamic analysis of a scissors hoop-rib truss deployable antenna mechanism

open access: yesDefence Technology, 2023
As the support mechanism of space-borne antennas, space deployable antenna mechanism belongs to complex multi-closed-loop coupling mechanism, configuration design and dynamic analysis are more difficult than general parallel mechanism.
Bo Han   +5 more
doaj   +1 more source

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