Results 41 to 50 of about 33,423 (302)
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
Accuracy Improvement for Stiffness Modeling of Parallel Manipulators [PDF]
, 2009 The paper focuses on the accuracy improvement of stiffness models for parallel manipulators, which are employed in high-speed precision machining. It is based on the integrated methodology that combines analytical and numerical techniques and deals with ...
Chablat, Damien +3 more
core +4 more sources
Stiffness modeling for perfect and non-perfect parallel manipulators under internal and external loadings [PDF]
, 2014 International audienceThe paper presents an advanced stiffness modeling technique for perfect and non-perfect parallel manipulators under internal and external loadings.
Chablat, Damien +2 more
core +4 more sources
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Accuracy Analysis of Two Parallel Manipulators
International Journal of Engineering and Management Sciences, 2019 The aim of the study is to analyse and visualize the accuracy of two parallel manipulators. The kinematics are calculated using vectors and the Newton method.
Sándor Hajdu, Dávid Bodnár
doaj +1 more source
Uniqueness Domains in the Workspace of Parallel Manipulators [PDF]
, 1997 International audienceThis work investigates new kinematic features of parallel manipulators. It is well known that parallel manipulators admit generally several direct kinematic solutions for a given set of input joint values.
Chablat, Damien, Wenger, Philippe
core +1 more source
A method for extending planar axis-symmetric parallel manipulators to spatial mechanisms
, 2015 This paper investigates axis-symmetric parallel manipulators, composed of a central base column and an arm system able to rotate around this column. The arm system includes several actuated upper arms, each connected to a manipulated platform by one or ...
Brogårdh,T +4 more
core +1 more source
Sensitivity comparison of planar parallel manipulators [PDF]
Mechanism and Machine Theory, 2010 This paper deals with the sensitivity comparison of three Degree-of-Freedom planar parallel manipulators. First, a methodology is described to obtain the sensitivity coefficients of the pose of the moving platform of the manipulators to variations in their geometric parameters and actuated variables.
Binaud, Nicolas +2 more
openaire +2 more sources
FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley +1 more source
Machines, 2021 Parallel robots with configurable platforms are a class of robots in which the end-effector has an inner mobility, so that its overall shape can be reconfigured: in most cases, the end-effector is thus a closed-loop kinematic chain composed of rigid ...
Tommaso Marchi +4 more
doaj +1 more source