Results 101 to 110 of about 72,023 (303)

Dynamic Modeling and Simulation of a Space-based Manipulator System

open access: yes, 2016
In this paper, a complete dynamic modeling process for a space-based n-DOF manipulator system is first presented, which is leading to a new method for modeling the general motion equation.
Chen ZC(陈正仓)
core  

Neural network based kinematic control of the hyper-redundant snake-like manipulator

open access: yes, 2007
In a sinusoid like curve configuration, the snake-like manipulator (also called snake arm) has a wide range of potential applications for its redundancy to overcome conventional industrial robot's limitation when carrying out a complex task.
Liu JG(刘金国)   +11 more
core   +1 more source

Lysyl oxidase (LOX)‐mediated remodeling of the extracellular matrix

open access: yesFEBS Letters, EarlyView.
The lysyl oxidase (LOX) family of enzymes drives extracellular matrix remodeling by oxidizing collagen, elastin, and fibronectin, promoting covalent cross‐link formation. This activity regulates tissue architecture and mechanical properties, while its dysregulation contributes to fibrosis, cardiovascular disease, glaucoma, connective tissue disorders ...
Fernando Rodríguez‐Pascual   +3 more
wiley   +1 more source

Vibration Control of a Two-Link Manipulator Using a Reduced Model

open access: yesVibration
This research aims to actively suppress vibrations at the end-effector of a flexible manipulator. When configured in a locked state, the system behaves as a two-link manipulator subjected to disturbances on the first link. To analyze its behavior, Finite
Amir Mohamad Kamalirad, Reza Fotouhi
doaj   +1 more source

Kinematics and Workspace Analysis of an 8-DOF Space Manipulator

open access: yesJixie chuandong, 2021
An 8-DOF manipulator with prismatic pair is proposed for space environment, which can complete equipment maintenance and object grabbing in space environment. The pose transformation matrix and forward kinematics equation of 8-DOF manipulator are derived
Kai Yang, Jinying Huang
doaj  

DNA ligase LigE increases bacterial transformation with damaged extracellular DNA

open access: yesFEBS Letters, EarlyView.
The DNA ligase LigE from the naturally competent Gram‐negative bacterium Neisseria gonorrhoaea increases transformation with cut extracellular DNA. This process is ATP‐dependent and relies on the catalytic activity of LigE; it also requires that LigE contains an intact periplasmic localisation sequence, indicating that ligE functions in the periplasm ...
Jolyn Pan   +4 more
wiley   +1 more source

Field Evaluation of a Robotic Apple Harvester with Negative-Pressure Driven End-Effectors on a Simplified 4-DoF Manipulator

open access: yesAgriculture
Apple picking is an inherently labor-intensive, time-consuming, and costly task, and robotic harvesting represents a potential alternative to address this challenge. This study presents the development and field evaluation of an integrated robotic system
Guangrui Hu   +7 more
doaj   +1 more source

Separated adaptive control scheme of a rotor-flying manipulator

open access: yes, 2016
Rotor flying manipulator (RFM), a new kind of mobile robot system being composed of a rotor flying robot (RFR) and a (several) manipulator(s), has absorbed great attentions in recent years because it enables a RFR to complete active tasks such as ...
He YQ(何玉庆)   +3 more
core  

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

open access: yesFEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana   +3 more
wiley   +1 more source

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