Results 31 to 40 of about 8,884,430 (245)

A new auxetic structure with significantly reduced stress concentration effects

open access: yesMaterials & Design, 2019
Auxetic structures exhibit certain abnormal mechanical responses such as negative Poisson's ratios, mainly through the intertwined deformation attributes of inter-connected members of macro structural forms.
Kusum Meena, Sarat Singamneni
doaj   +1 more source

Negative Poisson’s Ratio Lattice Structure with Chiral and Re-Entrant Properties

open access: yesApplied Sciences, 2023
Materials exhibiting negative Poisson’s ratio (NPR) effects possess several advantageous properties, including high specific strength, specific stiffness, and impact resistance.
Yifei Luo   +5 more
doaj   +1 more source

Capability of auxetic femoral stems to reduce stress shielding after total hip arthroplasty

open access: yesJournal of Orthopaedic Translation, 2023
Background: Stress shielding ​(SS) is considered the main mechanical cause of femoral stem loosening after total hip arthroplasty (THA). This study introduces an auxetic lattice femoral stem structure with negative Poisson's ratio that can expand ...
Bolun Liu   +7 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Comparative Investigation of Compression and Energy Absorption Performance of Modified Re-Entrant Auxetic Structures

open access: yesInternational Journal of Automotive Science and Technology
In this study, the collision behaviors of three different auxetic unit cell designs (diagonal re-entrant, split re-entrant, and arrowhead re-entrant) with negative Poisson's ratios used in energy absorption and available in the literature were ...
Mahmut Buğra Yıldız   +1 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

Free Vibration Characteristics of Multi-Material Lattice Structures

open access: yesVibration, 2023
This paper presents a modal analysis of honeycomb and re-entrant lattice structures to understand the change in natural frequencies when multi-material configuration is implemented.
Kadir Gunaydin, Ahmet Yavuz, Aykut Tamer
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

The structure of near-wall re-entrant flow and its influence on cloud cavitation instability

open access: yes, 2022
: The so-called ‘re-entrant jet’ is fundamental to periodic cloud shedding in partial cavitation. However, the exact physical mechanism governing this phenomenon remains ambiguous.
Poelma, C. (author)   +5 more
core   +2 more sources

The Exact Solution of the Bending Moment in the Folding Process of Negative Poisson’s Ratio Honeycomb Tape Spring and Multi-Objective Optimization Design

open access: yesAerospace, 2023
The tape spring is a crucial component used in the deployment mechanism of spacecraft, and the lightweight design of the deployment mechanism is currently one of the critical issues that need to be addressed.
Yang Yang, Fan Wang, Jieshan Liu
doaj   +1 more source

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