Results 31 to 40 of about 5,991 (269)
Kinematic Analysis of a 3-Axis Parallel Manipulator: The P3
Advances in Mechanical Engineering, 2013 This paper presents kinematic analysis of a 3-axis parallel manipulator, called P3. The P3 parallel manipulator is developed based on a 3-PRRU parallel mechanism, where P denotes prismatic pair, R revolute pair, and U universal joint.
Qiaohong Chen +3 more
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Kinematics and Workspace Analysis and Numerical Simulation of the 3-PRRRR Parallel Manipulator
Jixie chuandong, 2017 The Working space is an important performance and design index in evaluating parallel manipulator.The 3-PRRRR parallel manipulator branched chain is simplified reasonably,by using the D-H method,the 3-PRRRR parallel manipulator inverse kinematic analysis
Shi Mengrui, Zhaoxinhua
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Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential
FEBS Letters, EarlyView.Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta +3 more
wiley +1 more source
Parallelism and concurrency of graph manipulations
Theoretical Computer Science, 1980 AbstractGraph manipulations are formalized as graph derivations within the framework of graph grammar theory. In this paper we generalize recently published ‘Church–Rosser’ and ‘Parallelism’ Theorems for graph derivations. Given a ‘sequential independent’ sequence of graph derivations G⇒H ⇒X the Parallelism Theorem states that there is also a ...
Hartmut Ehrig, Barry K. Rosen
openaire +3 more sources
FEBS Letters, EarlyView.Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas +4 more
wiley +1 more source
Modal Decoupled Dynamics-Velocity Feed-Forward Motion Control of Multi-DOF Robotic Spine Brace
IEEE Access, 2018 Based on the parallel robotic manipulator, this paper proposes a motion control strategy for the novel robotic spine brace for spinal rehabilitation exercises.
Xinjian Niu +5 more
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Liver organoids: modelling complexity in homeostasis and disease
FEBS Letters, EarlyView.Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
Epigenetic reprogramming of lineage switching in cancer
FEBS Letters, EarlyView.Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı +4 more
wiley +1 more source
Design and Analysis of an Annular 3-PPR Planar Parallel Mechanism
Jixie chuandong, 2023 In order to enlarge the rotation workspace of the manipulator, an annular 3-PPR planar parallel mechanism with full rotation capability is proposed. Resorting to homogeneous transformation and closed vector method, the inverse kinematics solution of the ...
Wu Xiaoyong, Li Yiyi, Zhang Kaifei
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