Results 31 to 40 of about 809,085 (214)

Analysis and Optimization on Workspace of 2-PrRS-PR(P)S Parallel Metamorphic Mechanism

open access: yesJixie chuandong, 2020
Based on the theory of metamorphic mechanism,a novel parallel metamorphic mechanism of 2-PrRS-PR(P)S is proposed. The revolute pair of two limbs in the proposed mechanism can change its rotation axis to achieve the metamorphic configuration.
Ma Kun, Ma Hongwei, Tian Haibo
doaj  

Research on Control of Stewart Platform Integrating Small Attitude Maneuver and Vibration Isolation for High-Precision Payloads on Spacecraft

open access: yesAerospace, 2021
The Stewart platform, a classical mechanism proposed as the parallel operation apparatus of robots, is widely used for vibration isolation in various fields. In this paper, a design integrating both small attitude control and vibration isolation for high-
Weichao Chi   +3 more
doaj   +1 more source

Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas   +3 more
wiley   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Vibration Robust Optimal Semi-Active Control of Multi-Dimensional Vibration Isolator Based on Parallel Mechanism

open access: yesShanghai Jiaotong Daxue xuebao
In order to isolate multi-dimensional vibration experienced by vehicle-mounted precise instrument, a novel multi-dimensional vibration isolator is proposed based on 2-RPC/2-SPC parallel mechanism and the magneto-rheological (MR) damper. The kinematic and
GAO Xiang, NIU Junchuan, HE Lei, QIN Zhen, WANG Zhonglong
doaj   +1 more source

Study on the Algorithm of Multifunctional Bone External Fixator

open access: yesMATEC Web of Conferences, 2015
This paper discussed the problem that parameters of bone external fixator are difficult to calculate in the practical application. Positive solution is described in detail. We used MATLAB software to make simulation experiment.
Chen Jianwen   +3 more
doaj   +1 more source

Association Between Individualized Education for Kidney Replacement Therapy Modality Selection and Peritoneal Dialysis Initiation: A Cross‐Sectional Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) is an established home‐based kidney replacement therapy (KRT), but its uptake remains low in Japan. We evaluated whether individualized education in a dedicated outpatient clinic was associated with the initiation of PD.
Yasuko Ito   +7 more
wiley   +1 more source

Multibody Dynamics of Nonsymmetric Planar 3PRR Parallel Manipulator with Fully Flexible Links

open access: yesApplied Sciences, 2020
This paper presents the implementation of the floating frame of reference formulation to model the flexible multibody dynamics of a nonsymmetric planar 3PRR parallel manipulator.
Abdur Rosyid, Bashar El-Khasawneh
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Development of a material testing machine with multi-dimensional loading capability

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
This paper presents a multi-dimensional loading material testing machine based on a hexapod parallel mechanism. We designed a model-based PID closed-loop control method using feedbacks from six uniaxial force sensors installed on limbs. Three simulations
Jiangzhen GUO   +4 more
doaj   +1 more source

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