Results 71 to 80 of about 176,086,693 (264)

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

The response of a conical flame to a dual-frequency excitation

, 2023
This work investigates the response of a conical premixed flame to a dual-frequency excitation, based on the integrated CH* signal collected from a photomultiplier tube (PMT), the upstream velocity disturbance measured by a hotwire, and the ...
XU, Liangliang, Wang, Sirui, Wang, Guoqing, QI, Fei, Xia, Xi, ZHENG, Jianyi, Li, Lei   +6 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Disruption of the gut microbiota-inflammation-brain axis in unmedicated bipolar disorder II depression

Translational Psychiatry
The relationships of the gut microbiota-inflammation-brain axis in depressive bipolar disorder (BD) remains under-elaborated. Sixty-five unmedicated depressive patients with BD II and 58 controls (HCs) were prospectively enrolled.
Zixuan Guo, Shu Xiao, Guanmao Chen, Shuming Zhong, Hui Zhong, Shilin Sun, Pan Chen, Xinyue Tang, Hengwen Yang, Yanbin Jia, Zhinan Yin, Li Huang, Ying Wang   +12 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Altered amplitude of low-frequency fluctuation and regional cerebral blood flow in females with primary dysmenorrhea: a resting-state fMRI and arterial spin labeling study

, 2019
Ya-Nan Zhang,1 Jian-Wei Huo,1 Yi-Ran Huang,2 Ying Hao,3 Zi-Yue Chen41Department of Radiology, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Beijing 100010, People’s Republic of China; 2School of ...
Chen ZY, Huo JW, Hao Y, Zhang YN, Huang YR   +4 more
core  

Distinct Brain Functional Impairment Patterns Between Suspected Non-Alzheimer Disease Pathophysiology and Alzheimer’s Disease: A Study Combining Static and Dynamic Functional Magnetic Resonance Imaging

Frontiers in Aging Neuroscience, 2020
Background: Suspected non-Alzheimer disease pathophysiology (SNAP) refers to the subjects who feature negative β-amyloid (Aβ) but positive tau or neurodegeneration biomarkers.
Zheyu Li, Kaicheng Li, Xiao Luo, Qingze Zeng, Shuai Zhao, Baorong Zhang, Minming Zhang, Yanxing Chen, for the Alzheimer’s Disease Neuroimaging Initiative   +8 more
doaj   +1 more source

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

Advanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler, Nikolaus Kostwein, Ronald Schnitzer, Christian Mitterer, Verena Maier‐Kiener   +4 more
wiley   +1 more source

Some characteristics of low-amplitude cardiac signals

, 2020
We present the results of an experimental study of the low-amplitude cardiac signals without temporal and spatial averaging. The characteristics of the fluctuation and quasi-periodic components of the low-amplitude signals are determined statistically ...
Kim Z., Latfullin I., Teptin G., Mamedova L.   +3 more
core  

Regional brain function study in patients with primary Sjögren’s syndrome

Arthritis Research & Therapy
Background Primary Sjögren’s syndrome (pSS) manifests a spectrum of neuropsychological symptoms, primarily cognitive impairment, but the mechanism of central nervous system damage remains unclear.
Chunfeng Hu, Luoyu Wang, Jiao Huang, Yushan Shang, Xiaofang Zhang, Xinyun Du, Huijun Cao, Zhijiang Han, Peiying Wei   +8 more
doaj   +1 more source