Results 11 to 20 of about 31,026 (271)

Mechanical characteristics and foam filling enhancement mechanism of polymeric periodic hybrid structures under uniaxial compression

open access: yesMaterials & Design, 2023
In this study, two types of polymeric periodic hybrid (PPH) structures with hexagonal and re-entrant cells were proposed and manufactured by 3D printing using polylactic acid (PLA). PVC foam was adopted as filler material.
Ting Liu, Changhai Chen, Yuansheng Cheng
doaj   +1 more source

Study of mechanical properties and enhancing auxetic mechanism of composite auxetic structures

open access: yesEngineering Reports, 2021
The auxetic structures attract much attention because of their good properties, such as enhanced energy absorption capacity and buckling resistance. It is an important topic to combine the auxetic structures with other materials or structures to improve ...
Zengqin Shi   +5 more
doaj   +1 more source

Report of a patient with refractory atrial tachycardia whose heart rate was controlled using ivabradine

open access: yesJournal of International Medical Research, 2022
Ivabradine is an effective treatment for focal atrial tachycardia. However, it may also be effective for re-entrant atrial arrhythmia. An 85-year-old woman with a history of underlying ischaemic cardiomyopathy complained of worsening symptoms of heart ...
Lanting Zhao   +5 more
doaj   +1 more source

Synchrotron X-ray micro-computed tomography imaging of 3D re-entrant micro lattice during in situ micro compression experimental process

open access: yesMaterials & Design, 2020
3D re-entrant mechanical metamaterials were designed and fabricated with PμLSE (Projection Micro Litho Stereo Exposure) 3D printing technique, synchrotron X-Ray tomography 3D imaging and in situ mechanical experiments were performed for characterizing ...
Wenwang Wu   +8 more
doaj   +1 more source

The Negative Poisson’s Ratio Ship Base Design and Vibration Isolation Performance Analysis

open access: yesApplied Sciences, 2021
This paper mainly studies the vibration isolation of negative Poisson’s ratio structure in the honeycomb base of ships. Based on the structure of the negative Poisson’s ratio structure, different laying methods and different cell structure are used to ...
Kun Pan   +3 more
doaj   +1 more source

Non-Re-Entrant Atrioventricular Nodal Tachycardia [PDF]

open access: yesMilitary Medicine, 2009
Supraventricular tachycardia caused by AV nodal dual conduction is usually re-entry tachycardia. We report a case of a 40-year-old man with incessant supraventricular tachycardia caused by simultaneous conduction via slow and fast AV nodal pathway. The patient was successfully treated with catheter ablation of slow AV nodal pathway, the treatment of ...
Ludek, Haman   +2 more
openaire   +2 more sources

Investigation of Water Injection Influence on Cloud Cavitating Vortical Flow for a NACA66 (MOD) Hydrofoil

open access: yesEnergies, 2021
Re-entrant jet causes cloud cavitation shedding, and cavitating vortical flow results in flow field instability. In the present work, a method of water injection is proposed to hinder re-entrant jet and suppress vortex in cloud cavitating flow of a ...
Zhijian Li   +3 more
doaj   +1 more source

Re-entrant hidden order at a metamagnetic quantum critical end point [PDF]

open access: yes, 2003
Magnetization measurements of URu2Si2 in pulsed magnetic fields of 44 T reveal that the hidden order phase is destroyed before appearing in the form of a re-entrant phase between ~ 36 and 39 T.
A. C. Hewson   +15 more
core   +3 more sources

Artificial intelligence–enabled electrocardiogram to distinguish atrioventricular re-entrant tachycardia from atrioventricular nodal re-entrant tachycardia

open access: yesCardiovascular Digital Health Journal, 2023
Accurately determining arrhythmia mechanism from a 12-lead electrocardiogram (ECG) of supraventricular tachycardia can be challenging. We hypothesized a convolutional neural network (CNN) can be trained to classify atrioventricular re-entrant tachycardia (AVRT) vs atrioventricular nodal re-entrant tachycardia (AVNRT) from the 12-lead ECG, when using ...
Arunashis Sau   +16 more
openaire   +4 more sources

Elastic analysis of auxetic cellular structure consisting of re-entrant hexagonal cells using a strain-based expansion homogenization method

open access: yesMaterials & Design, 2018
In this paper, an auxetic cellular structure consisting of re-entrant hexagonal cells have been analyzed, exhibiting different elastic properties in two orthogonal directions.
Tao Wang   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy