Results 81 to 90 of about 2,273,334 (347)

并联机构运动分岔与稳定性分析

open access: yesJixie chuandong, 2008
At singularities, the parallel manipulator will have more than one the motion trends. So the parallel manipulator will lose control. Based on the bifurcation characteristics of a parallel manipulator at singularities, a new method to estimate the losing ...
郭瑞琴
doaj  

Optimal Point-to-Point Motion Planning of Flexible Parallel Manipulator with Multi-Interval Radau Pseudospectral Method

open access: yesMATEC Web of Conferences, 2016
Optimal point-to-point motion planning of flexible parallel manipulator was investigated in this paper and the 3RRR parallel manipulator is taken as the object.
Kong Minxiu, Chen Zhengsheng, Ji Chen
doaj   +1 more source

Positioning Control of Pneumatic Parallel Manipulator.

open access: yesJournal of the Robotics Society of Japan, 1997
This paper describes one of the control methods which attain robust motion control performances of parallel manipulator. We used pneumatic cylinders as a driving actuator, focusing on air compressibility valid for the minute force control and impact absorption in environmental contact.
Masahiro Takaiwa, Toshiro Noritsugu
openaire   +2 more sources

The PI3Kδ inhibitor roginolisib (IOA‐244) preserves T‐cell function and activity

open access: yesMolecular Oncology, EarlyView.
Identification of novel PI3K inhibitors with limited immune‐related adverse effects is highly sought after. We found that roginolisib and idelalisib inhibit chronic lymphocytic leukemia (CLL) cells and Treg suppressive functions to similar extents, but roginolisib affects cytotoxic T‐cell function and promotion of pro‐inflammatory T helper subsets to a
Elise Solli   +7 more
wiley   +1 more source

Orientational Capability Analysis of a 2UPR-SPR Parallel Manipulator

open access: yesJixie chuandong, 2019
The parallel module of Exechon machine tool is developed based on the 3 degree-of-freedom (DOF) 2UPR-SPR mechanism, which is a parallel spindle head with two rotational (orientational) DOFs and one translational DOF.
Che Linxian   +3 more
doaj  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

open access: yesMolecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley   +5 more
wiley   +1 more source

Dynamics of the Orthoglide parallel robot [PDF]

open access: yes, 2009
Recursive matrix relations for kinematics and dynamics of the Orthoglide parallel robot having three concurrent prismatic actuators are established in this paper.
Chablat, Damien   +2 more
core   +2 more sources

Optimal design of a Stewart platform using the global transmission index under determinate constraint of workspace

open access: yesAdvances in Mechanical Engineering, 2017
The Stewart platform is a typical parallel manipulator. It is used as a space docking mechanism whose requirement for movement scope is determinate. This article addresses the dimension synthesis of the space docking mechanism.
Zenghui Xie   +3 more
doaj   +1 more source

Optimization of 3-DOF parallel motion devices for low-cost vehicle simulators

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
Motion generation systems are becoming increasingly important in certain Virtual Reality (VR) applications, such as vehicle simulators. This paper deals with the analysis of the Inverse Kinematics (IK) and the reachable workspace of a three-degrees-of ...
Sergio CASAS   +3 more
doaj   +1 more source

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