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EAI Endorsed Transactions on Industrial Networks and Intelligent Systems 2022年第31期9卷

作者： Le, Ngoc-Bich Pham, Thi-Thu-Hien Phan, Quoc-Hung Debnath, Narayan C. Le, Ngoc-Huan School of Biomedical Engineering International University Ho Chi Minh City Viet Nam Vietnam National University Ho Chi Minh City Thu Duc City Ho Chi Minh City Viet Nam National United University Department of Mechanical Engineering Miaoli Taiwan Eastern International University Binh Duong Viet Nam

This paper presents a solution to automatically measure the T-shirt dimensions in the garment industry. To address this goal, the paper focuses on utilizing image processing to determine the T-shirt's dimensions. The processing algorithm was provided along with the proposed recognition regions novel approach that was expected to deliver faster processing speed and enhance accuracy. The feasibility was demonstrated by characterizing the accuracy and processing speed. Specifically, five distinctive dimensions were successfully identified and measured;with the replication of 30, the discrepancy varies from 0.095% (for chest) to 2.088% (for collar). The divergence is insignificant compared with the granted tolerances. Finally, the processing time and the mechanical structure of the system deliver productivity of 22 products/minute which is approximately 10 times more rapidly than manual measurement (25 seconds) © 2022. Ngoc-Bich Le et al.,. All Rights Reserved.

关键词： Computer vision

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The Impact of Fidget Spinners on Fine Motor Skills in Individuals with and without ADHD: An Exploratory Analysis

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Journal of Behavioral and Brain Science 2022年第3期12卷 82-101页

作者： Reza Koiler Austin Schimmel Elham Bakhshipour Patricia A. Shewokis Nancy Getchell Biomechanics and Movement Sciences Program University of Delaware Newark DE USA Department of Kinesiology and Applied Physiology University of Delaware Newark DE USA Nutrition Sciences Department College of Nursing and Health Professions School of Biomedical Engineering Science and Health Systems School of Education Drexel University Philadelphia USA

Fidget spinners have been marketed as repetitive motion devices that improve attention and motor performance, and as such, they have become quite appealing to individuals with Attention Deficit Hyperactive Disorder (ADHD). To date, no studies have explored changes in brain activity that may occur due to fidgeting in ADHD. Our aim was to use functional Near-Infrared Spectroscopy (fNIRS) to examine the prefrontal cortex (PFC) during the performance of a standardized fine motor skills test after using a fidget spinner. Eight right-handed adults with ADHD and eight age and gender matched adults without ADHD (4F/4M, 4 control/4 fidget) performed the Purdue Pegboard Test (PPT) while their brain oxygenation was monitored using fNIRS. Relative neural efficiency (RNE) and involvement (RNI) were calculated and analyzed for all subtasks of PPT including the less cognitively demanding fine motor subtasks and more complex assembly tasks. The fidget spinner improved both task performance and RNE in the ADHD group but not the non-ADHD group for the less cognitively demanding subtasks. Our results indicate Fidget spinners may improve both relative neural efficiency and fine motor performance in adults with ADHD for less cognitively demanding tasks.

关键词： Fidget Spinners fNIRS ADHD Executive Function Motor Skill

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Incorporating extended neck Helmholtz resonators into an advanced multi-degree of freedom acoustic metamaterial for low-frequency, broadband acoustic absorption

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Applied Acoustics 2025年 238卷

作者： Wang, Jiayu Bennett, Gareth J. Department of Mechanical Manufacturing and Biomedical Engineering Trinity College Dublin the University of Dublin D02 PN40 Ireland

This study investigates the novel design and evaluation of a low-frequency, broadband, noise-absorbing acoustic metamaterial. The technology combines the sound-absorbing characteristics of micro-perforated panels with extended neck Helmholtz resonators. Individual sub-chambers can have unique properties such as depth, porosity, hole diameter, extended neck length, and neck internal diameter. An optimisation algorithm is implemented to ensure that broadband absorption is maximised in a low-frequency range of interest. The Helmholtz resonators couple with the response of the micro-perforated panels so that the combined response is both more broadband and of lower frequency than could be attained by the elements individually. Low frequencies below 500 Hz are of interest in the study, and the area exposed to the sound field is limited to 0.04 m2, so the technology is considered to be a locally reacting absorber. Experimental results indicate that perfect sound absorption of over 99.9% at 329.6 Hz with a 51 mm thickness (sub-wavelength ratio = 1/20.4) can be achieved with one configuration, which emphasises maximum absorption. A second configuration, which emphasises broadband absorption, achieves an average sound absorption coefficient of 0.8 in the 254 Hz to 500 Hz range. Experimental results compare well with analytical and numerical results and outperform some results found in the literature. © 2025 The Author(s)

关键词： Acoustic resonators

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Evaluate the Fidelity of Synthetic Tissues Used in Escharotomy Simulators 1

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SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2020

作者： Lee, Sangrock Rahul Hannay, Vanessa Gallagher, Samara Lee, Hanna Imtiaz, Aisha Turkseven, Melih Ryason, Adam Makled, Basiel Parsey, Conner Norfleet, Jack De, Suvranu Department of Mechanical Aerospace and Nuclear Engineering Rensselaer Polytechnic Institute TroyNY United States Center for Modeling Simulation and Imaging in Medicine Rensselaer Polytechnic Institute TroyNY United States Department of Biomedical Engineering Rensselaer Polytechnic Institute TroyNY United States U.S. Army Futures Command Combat Capabilities Development Command Soldier Center STTC OrlandoFL United States

ISBN: (数字)9783030597658

ISBN: (纸本)9783030597641

Patients with full thickness circumferential burns may require an urgent and relatively high-risk procedure known as an "escharotomy" to preserve limb perfusion and sometimes airway ventilation. The burned skin is incised down to the subcutaneous level, providing decompression through the incision sites. A delay in performing an escharotomy, or an inadequately performed escharotomy, may lead to true compartment syndrome endangering life and limb. With the Army’s emerging doctrine of prolonged field care, non-expert providers must be trained to perform escharotomies when indicated. However, existing physical simulations fall short of delivering the fidelity necessary to train the procedure by not providing adequate haptic and visual cues. To improve the fidelity of escharotomy simulations, gaps in performance between synthetic tissue and full thickness burned tissue must be measured. This work evaluates the fidelity of synthetic tissues used in escharotomy simulators with that of the full thickness burned tissues characterized using an ex vivo porcine model. Incision and cutting experiments are performed at the rates relevant to the escharotomy procedure. A statistical analysis shows a significant difference in the critical force to rupture synthetic tissues and burned porcine skin tissues. © The Society for Experimental Mechanics, Inc. 2021.

关键词： Statistical methods

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Smart Wearable Wristband for Patients' Health Monitoring System through IoT

Smart Wearable Wristband for Patients' Health Monitoring Sys...

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International Conference on Power, Energy, Control and Transmission Systems (ICPECTS)

作者： Shannmukha Naga Raju Vonteddu PrasanthiKumari Nunna Shubhi Jain Samson Isaac. J Nitya S G. Diwakar Department of Electrical and Electronics Engineering University College of Engineering Kakinada Jawaharlal Nehru Technological University Kakinada Kakinada Andhra Pradesh India Department of Electrical and Electronics Engineering School of Engineering University of Petroleum and Energy Studies Dehradun Uttarakhand India Department of Electronics and Communication Swamikeshvanand Institute of Technology Management and Gramothan Jaipur Rajasthan India Departrnent of Biomedical Engineering Surgical and Critical care Equipments Laboratory Karunya Institute of Technology &Sciences Coimbatore Tamil Nadu India School of Electronics and Communication Reva University Bangalore Karnataka India Department of Mechanical Engineering KoneruLakshmaiah Education Foundation Vaddeswaram Andhra Pradesh India

ISBN: (纸本)9781665462761

In today's modern world, technology takes part an important role in the medical field. It is must necessary to monitor the patient's health continuously after the operation of the patient. In the healthcare field Internet of Things (IoT) plays the main roleinmonitoring health with lots of applications. To monitor the health parameters of the patient, the smart wearable wristband monitoring system is implemented by using the IoT domain. In this article, the NodeMCU microcontroller act as a gateway between the hardware devices and the software. The parameters to be measured from the patient's body are temperature, heart rate, glucose level, oxygen level, and Blood Pressure (BP). These parameters are measured by using the sensors. The sensors are interfaced with the microcontroller. Then the microcontroller sends the data from the sensors to the cloud. The cloud will analyse the data from the normal values given in the microcontroller. If any of the parameter's data from the sensor are measured as abnormal values, the cloud will send the alert message and the location of the patient to the patient's relatives, to the doctor who is attending that patient, and to the patients' mobile via Global System for Mobile communication (GSM), and Global Positioning System (GPS) for location.

关键词： Temperature measurement Temperature sensors GSM Cloud computing Microcontrollers Medical services biomedical monitoring

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Replacing metal-based lightning strike protection layer of CFRPs by 3D printed electrically conductive polymer layer 6

Replacing metal-based lightning strike protection layer of C...

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6th Annual Composites and Advanced Materials Expo, CAMX 2019

作者： Kumar, Vipin Smith, Tyler Condon, Justin C. Yeole, Pritesh S. Hassen, Ahmed A. Kunc, Vlastimil KnoxvilleTN37932 United States Department of Mechanical Aerospace and Biomedical Engineering University of Tennessee Middle Drive KnoxvilleTN37996 United States

Electrically conductive adhesive layers were deposited on top of aerospace grade carbon fiber reinforced plastic (CFRP) panels using a small-scale 3D printer. Polylactic acid (PLA) filaments with copper filler (CU-PLA) and graphene filler (GO-PLA) were used to print around 0.7 mm thick electrically conductive layer on top of CFRP panels. 3D printed polymeric layers were tested for their effectiveness as a lightning strike protection (LSP) material by subjected to a simulated lightning strike. A painted, electrically non-conductive unprotected panel was also tested for comparison. In the case of the CU-PLA protected sample, a high electrical conductivity proved to be useful in fast dissipation of the lightning current. Fast current dissipation helped to reduce the resistive heating after a lightning strike. Thermography and high-speed camera analysis were employed to study the heat generation and current dissipation during the lightning strike. These results established that a useful Faraday Cage was applied via additive manufacturing successfully. This work shows the successful application of 3D printing for producing LSP technologies, with future work aimed at investigating optimal printable electrically conductive thermoset material candidates. © 2019 by Ever J. Barbero. Published by CAMX - The Composites and Advanced Materials Expo.

关键词： 3D printers

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To: Energy Storage Materials October 13, 2022

SSRN

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SSRN 2022年

作者： Nie, Bo Li, Mingxin Yao, Tiankai Yang, Haoqing Duan, Linrui Zhang, Juchen Xin, Guoqing Liu, Tengxiao Sun, Hongtao Lian, Jie The Harold & Inge Marcus Department of Industrial & Manufacturing Engineering The Pennsylvania State University University ParkPA16802 United States Department of Biomedical Engineering The Pennsylvania State University University ParkPA16802 United States The Pennsylvania State University University ParkPA16802 United States Department of Mechanical Aerospace and Nuclear Engineering Rensselaer Polytechnic Institute New York12180 United States

Developing electrochemical energy storage that enables simultaneously delivering high areal, volumetric, and gravimetric performance is a grand fundamental and technological challenge. It is straightforward but problematic to make electrodes thicker and denser for high areal and volumetric performance while sustaining a high level of gravimetric performance. The insufficient charge transports in these electrodes with high mass loading and density could severely degrade the energy storage performance. Herein, we developed an energy-efficient fast sintering method (e.g., Spark Plasma Sintering) to fabricate a structural cathode with a high electrode density (~ 2.0-2.3 g cm-3) and high active material mass loading (> 70-100 mg cm-2). The vertically aligned carbon networks and anisotropic pore channels in thick electrodes are designed and tailored for efficient charge transports throughout the whole thickness. The sintered structural electrodes are demonstrated to deliver high battery performance in gravimetric (164 mAh g-1), volumetric (246 mAh cm-3), and areal metrics (8.6 mAh cm-2), which enables improved energy and power outputs in a new battery configuration with reduced weight and cost of passive components. © 2022, The Authors. All rights reserved.

关键词： Lithium-ion batteries

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BPS2025 - Mutagenesis of claudin-15 reveals structural basis for channel assembly and ion selectivity in tight junctions

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Biophysical Journal 2025年第3期124卷 546a-546a页

作者： Sarah McGuinness Samaneh Sajjadi Fatemeh Khalili-Araghi Department of Biomedical Engineering University of Illinois Chicago Chicago IL USA Department of Mechanical and Industrial Engineering University of Illinois Chicago Chicago IL USA Department of Physics University of Illinois Chicago Chicago IL USA

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Frustrated metastable-to-equilibrium grain boundary structural transition in NbMoTaW due to segregation and chemical complexity

arXiv

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arXiv 2023年

作者： Geiger, Ian Apelian, Diran Pan, Xiaoqing Cao, Penghui Luo, Jian Rupert, Timothy J. Material and Manufacturing Technology University of California IrvineCA92697 United States Department of Materials Science and Engineering University of California IrvineCA92697 United States Department of Physics and Astronomy University of California IrvineCA92697 United States Department of Mechanical and Aerospace Engineering University of California IrvineCA92697 United States Department of NanoEngineering University of California San Diego La Jolla CA92093 United States Program in Materials Science and Engineering University of California San Diego La Jolla CA92093 United States

Grain boundary structural transitions can lead to significant changes in the properties and performance of materials. In multi-principal element alloys, understanding these transitions becomes complex due to phenomena such as local chemical ordering and multi-component segregation. Using atomistic simulations, we explore a metastable-to-equilibrium grain boundary structural transition in NbMoTaW. The transition, characterized by structural disordering and reduced free volume, shows high sensitivity to its local chemical environment. Most notably, the transition temperature range of the alloy is more than twice that of a pure metal. Differences in composition between coexisting metastable and equilibrium structures highlight the change in local site availability due to structural relaxation. Further examination of grain boundaries with fixed chemical states at varying temperatures reveals that the amount of segregation significantly influences the onset temperature yet has minimal effect on the transition width. These insights underscore the profound effect of chemical complexity and ordering on grain boundary transitions in complex concentrated alloys, marking a meaningful advancement in our understanding of grain boundary behavior at the atomic level. Copyright © 2023, The Authors. All rights reserved.

关键词： Grain boundaries

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Amelioration of the brain structural connectivity is accompanied with changes of gut microbiota in a tuberous sclerosis complex mouse model

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Translational Psychiatry 2024年第1期14卷 1-16页

作者： Hsieh, Christine Chin-jung Lo, Yu-Chun Wang, Hsin-Hui Shen, Hsin-Ying Chen, You-Yin Lee, Yi-Chao Biomedical Translation Research Center Academia Sinica Taipei Taiwan Ph.D. Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University Taipei Taiwan Neuroscience Research Center Taipei Medical University Taipei Taiwan Department of Biomedical Engineering National Yang Ming Chiao Tung University Taipei Taiwan International Master Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University Taipei Taiwan

Tuberous sclerosis complex (TSC) is a genetic disease that causes benign tumors and dysfunctions in many organs, including the brain. Aside from the brain malformations, many individuals with TSC exhibit neuropsychiatric symptoms. Among these symptoms, autism spectrum disorder (ASD) is one of the most common co-morbidities, affecting up to 60% of the population. Past neuroimaging studies strongly suggested that the impairments in brain connectivity contribute to ASD, whether or not TSC-related. Specifically, the tract-based diffusion tensor imaging (DTI) analysis provides information on the fiber integrity and has been used to study the neuropathological changes in the white matter of TSC patients with ASD symptoms. In our previous study, curcumin, a diet-derived mTOR inhibitor has been shown to effectively mitigate learning and memory deficits and anxiety-like behavior in Tsc2 ^+/− mice via inhibiting astroglial proliferation. Recently, gut microbiota, which is greatly influenced by the diet, has been considered to play an important role in regulating several components of the central nervous system, including glial functions. In this study, we showed that the abnormal social behavior in the Tsc2 ^+/− mice can be ameliorated by the dietary curcumin treatment. Second, using tract-based DTI analysis, we found that the Tsc2 ^+/− mice exhibited altered fractional anisotropy, axial and radial diffusivities of axonal bundles connecting the prefrontal cortex, nucleus accumbens, hypothalamus, and amygdala, indicating a decreased brain network. Third, the dietary curcumin treatment improved the DTI metrics, in accordance with changes in the gut microbiota composition. At the bacterial phylum level, we showed that the abundances of Actinobacteria, Verrucomicrobia, and Tenericutes were significantly correlated with the DTI metrics FA, AD, and RD, respectively. Finally, we revealed that the expression of myelin-associated proteins, myelin bassic p

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