Results 41 to 50 of about 2,512,449 (333)
International Journal of Advanced Robotic Systems, 2012 This paper addresses the problem of identifying the property of the singularity loci of a class of 3/6-Gough-Stewart manipulators for general orientations in which the moving platform is an equilateral triangle and the base is a semiregular hexagon ...
Hui Zhou +5 more
doaj +1 more source
An Algorithm for Computing Cusp Points in the Joint Space of 3-RPR Parallel Manipulators [PDF]
, 2006 This paper presents an algorithm for detecting and computing the cusp points in the joint space of 3-RPR planar parallel manipulators. In manipulator kinematics, cusp points are special points, which appear on the singular curves of the manipulators. The
Chablat, Damien +2 more
core +2 more sources
Multiscale Manipulations with Multiple Parallel Mechanism Manipulators [PDF]
, 2008 We have shown a dexterous micromanipulation system based on single-master and multislave device configuration and its deformable object micromanipulation such as styrene block and roe. The system enables 6 d.o.f. object position control using 2 parallel mechanism micromanipulators.
Hwang, Gilgueng, Hashimoto, Hideki
openaire +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Study of error modeling in kinematic calibration of parallel manipulators
International Journal of Advanced Robotic Systems, 2016 Error modeling is the foundation of a kinematic calibration which is a main approach to assure the accuracy of parallel manipulators. This article investigates the influence of error model on the kinematic calibration of parallel manipulators.
Liping Wang +4 more
doaj +1 more source
Pose, posture, formation and contortion in kinematic systems [PDF]
, 2002 The concepts of pose, posture, formation and contortion are defined for serial, parallel and hybrid kinematic systems. Workspace and jointspace structure is examined in terms of these concepts.
CM Gosselin +9 more
core +1 more source
Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley +1 more source
Pa2 kinematic bond in translational parallel manipulators [PDF]
Mechanical Sciences, 2018 The Pa2 pair is composed of two intertwined articulated parallelograms connecting in parallel two links of a kinematic chain. This pair has two translational degrees of freedom leading to a translational plane variable with the position.
A. Hernández +4 more
doaj +1 more source
Stiffness modeling of robotic manipulator with gravity compensator [PDF]
, 2013 The paper focuses on the stiffness modeling of robotic manipulators with gravity compensators. The main attention is paid to the development of the stiffness model of a spring-based compensator located between sequential links of a serial structure.
B-J Yi +6 more
core +4 more sources
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source