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27th World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI 2023

作者： Hashimoto, Shigehiro Biomedical Engineering Department of Mechanical Engineering Kogakuin University Tokyo163-8677 Japan

ISBN: (纸本)9781713880325

The Artificial Intelligence (AI) research field is interdisciplinary. In this research, based on students' understanding of the current situation, AI is considered in relation to biomedical engineering, which is one of the interdisciplinary fields. Students expected the effectiveness of AI for society while having ethical and security concerns. Along with the increase in communication speed with large memory capacity and networking, many results have been obtained in the field of biomedical engineering: decoding DNA base sequences and digitizing medical images. On the other hand, security issues are being discussed in information networks: handling of personal genetic information. AI is expected to be used as a means of interdisciplinary communication: interdisciplinary participation is desirable. In the future, attitudes about using AI may become one of the main principles of human society. © 2023 Proceedings of World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI. All rights reserved.

关键词： Students

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High-Fidelity Temperature and Heat Flux Evaluation in a Mach 6 Arcjet Tunnel with Infrared Thermography

High-Fidelity Temperature and Heat Flux Evaluation in a Mach...

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AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025

作者： Dove, Drew K. Isaacs, Christian T. Samuels, Killian E. Dixon, Jonathan A. Baccarella, Damiano Kihm, Kenneth D. Mechanical Aerospace and Biomedical Engineering Department University of Tennessee KnoxvilleTN37996 United States

ISBN: (数字)9781624107238

ISBN: (纸本)9781624107238

At the University of Tennessee, efforts to establish highly accurate, two-dimensional temperature measurements using high-speed infrared thermography (IRT) are underway for the Tennessee High-Enthalpy Wind Tunnel. The validation process consists of comparing two fundamentally different techniques– IRT and a fast-response thermocouple– eliminating sources of error in each until finding agreement. Investigations thus far have shown that IRT suffers greatly in pulsed arc facilities, owing to the propagation of stray radiation generated by the electric arc. One method of treating upstream radiation was placing a stainless steel shield on the subsonic side of the converging-diverging nozzle, restricting the arc radiation from the test section. The shield in its current form provided insufficient aid, allowing undesirable errors to remain. Another method attempted to characterize the electric arc, establishing the fundamental steps required to apply corrective measures to infrared data. Although containing many simplifying assumptions, the basic model already measures temperature errors within the same order of magnitude as seen experimentally. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Thermocouples

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Study of Thermal Uniformity and Heat Displacement Characteristics in Multi-stage Drying Equipment 3rd

Study of Thermal Uniformity and Heat Displacement Characteri...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Fikri, Thaharul Syuhada, Ahmad Thaib, Razali of Mechanical Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

Traditional drying still lacks one of the lengths of the curing process that takes 2–4 days depending on the condition of the sun, unlike the modern way of using dryer equipment. Previous research had created a multistoried dryer, but there was still a considerable temperature difference between the shelves. The study aims to reexamine the distribution of temperatures that occur in high-rise dryer equipment. Prior research has designed dryer appliances with a leveling 9 levels of hot gas line and a sharp turning fins, 45-degree bend on the left and right sides of the instruments. Still, they do not achieve the same temperature consistency in the dryer room. Achieving the right temperature in each dryer requires reshaping the fins of a hot gas line. From the long changes to the hot gas line, an efficient fin variation, a size of 35 mm in the gas duct, followed by a 5 mm increase in the last fin at the first deposit of 60 mm, but at the other end of the hot gas line at 7, 8, 9, was shut, with the experiment producing an evenly matched temperature between 1–2 ºC. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Dryers (equipment)

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Microarray Design for Measuring Contraction of Aligned Isolated Myotubes 27

Microarray Design for Measuring Contraction of Aligned Isola...

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27th World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI 2023

作者： Jinnai, Sora Hashimoto, Shigehiro Biomedical Engineering Department of Mechanical Engineering Kogakuin University Tokyo163-8677 Japan

ISBN: (纸本)9781713880325

Measurement of single-myotube contraction is essential for the evaluation of engineered tissues. A microarray-associated scaffold plane was designed to evaluate the contraction of multiple myotubes simultaneously in vitro. Considering the dimensions of a single myotube, a microcylinder array with a diameter of 10 µm and an interval of 20 µm was created on the scaffold plane by photolithography. Cells will be cultured on columnar projections of 20 µm in height or on the flat membrane surface with micro-projections on the back. To culture each myotube in isolation, a layer of water-soluble gel is used. Concave spaces are prepared at intervals on the gel surface, and myoblasts will be seeded in the concave spaces. After the myoblasts differentiate and fuse into myotubes, the gel layer is dissolved and removed. Cyclic electrical pulses will be applied through electrodes immersed in the medium. The repetitive contractile motion of myotubes will be measured by the synchronized deformation of the micro-columns or the movement of back projections accompanying the deformation of membrane. Contraction motion of multiple myotubes can be measured simultaneously. By comparing the motion in membranes with protrusions on the back surface, the effect of the shape of the microcylinder can be evaluated. © 2023 Proceedings of World Multi-Conference on Systemics, Cybernetics and Informatics, WMSCI. All rights reserved.

关键词： Cell culture

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A combined experimental and numerical approach for heat transfer enhancement in a minichannel using half rectified pulsating flows 9

A combined experimental and numerical approach for heat tran...

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9th European Thermal Sciences Conference, EUROTHERM 2024

作者： Kumavat, P.S. Alimohammadi, S. O'Shaughnessy, S.M. Department of Mechanical Manufacturing and Biomedical Engineering University of Dublin Trinity College Dublin Ireland School of Mechanical and Design Engineering Technological University Dublin Ireland

The miniaturization of electronic packages and their associated high-power density circuits requires more innovative cooling solutions. Single phase pulsating flows offer a promising solution due to their disruption of the thermal boundary layer. This study aims to bridge the knowledge gap by using experimental and computational methods to investigate the complex flow characteristics of laminar pulsating flows in a heated rectangular minichannel and couple that analysis with an investigation of thermal-hydraulic performance. Experimental analysis involves a uniformly heated thin foil approximating a constant heat flux bottom wall. Wall temperature measurements are recorded using an infrared thermography system. Analogous to the experimental conditions, a three-dimensional conjugate heat transfer computational model is developed with a volumetric heat generation source. Positive and negative half rectified sinusoidal pulsating flow waveforms are studied for dimensionless pulsation frequencies or Womersley numbers of Wo = 2.5 and 5.1 at a fixed flow rate amplitude A 0 = 3. For the positive half rectified waveform, a marginal enhancement in heat transfer of 2.2% for Wo = 2.5, A 0 = 3 was obtained. Whereas the negative half rectified case leads to a heat transfer enhancement of 9% and 6% for Wo = 2.5 and Wo = 5.1 respectively, with a high thermal performance of • = 2.4 over corresponding steady flow. © Published under licence by IOP Publishing Ltd.

关键词： Temperature measurement

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Oscillatory Hall effect from magnetoelectronic coupling in flexoelectronic silicon

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Physical Review B 2024年第8期109卷 L081113-L081113页

作者： Paul C. Lou Ravindra G. Bhardwaj Anand Katailiha W. P. Beyermann Sandeep Kumar Department of Mechanical Engineering University of California Riverside California 92521 USA Department of Physics and Astronomy University of California Riverside California 92521 USA Materials Science and Engineering Program University of California Riverside California 92521 USA

Magnetoelectronic coupling can be defined as cross-domain coupling between electronic and magnetic properties, where modulation in magnetic properties changes the electronic properties. In this Letter, explicit experimental evidence of magnetoelectronic coupling is presented, which is uncovered from the oscillatory Hall effect response in Hall measurement. The strain gradient in a MgO (1.8 nm)/p-Si (∼400 nm) freestanding sample leads to transfer of electrons (∼5×1018cm−3) from valence to conduction band due to flexoelectronic charge separation in the p-Si layer. The resulting flexoelectronic polarization gives rise to the temporal magnetic moment from dynamical multiferroicity. The external magnetic field changes the net temporal magnetic moment, which causes modulations in charge carrier concentration and oscillatory Hall effect. The period of oscillatory Hall response is 1.12 T, which is attributed to the magnitude of the temporal magnetic moment. The discovery of the oscillatory Hall effect adds another member to the family of Hall effects.

关键词： Hall effect Doped semiconductors Electronically polarized systems Flexoelectrics Multiferroics Hall bar

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Computational assessment of airflow circuit in a double-acting solenoid-type non-invasive bi-level ventilator

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Research on biomedical engineering 2024年第1期40卷 25-41页

作者： Ige, Ebenezer Olubunmi Amudipe, Samuel Olufemi Zaccheus, Jesuloluwa Emmanuel Oyejide, Ayodele James Ekpo-Epkenyong, Otu Akintayo, Christopher Oloruntoba Dare, Ademola Adebukola Glucksberg, Matthew R. Department of Mechanical Engineering Rochester Institute of Technology RochesterNY14623 United States Department of Biomedical Engineering Afe Babalola University Ado-Ekiti360231 Nigeria Department of Mechanical and Mechatronic Engineering Afe Babalola University Ado-Ekiti360231 Nigeria Department of Physiology College of Medicine and Health Sciences Afe Babalola University Ado-Ekiti360231 Nigeria Department of Medicine and Surgery College of Health Sciences Obafemi Awolowo University Ile-Ife220282 Nigeria Department of Biomedical Engineering University of Ibadan Ibadan200005 Nigeria Department of Biomedical Engineering Center for Innovation in Global Health Technologies Northwestern University EvanstonIL60208 United States

Purpose: Bi-level ventilation is a lung-preserving strategy employed for clinical presentations of acute respiratory distress syndrome (ARDS). Although mechanical ventilation enjoyed significant patronage during the coronavirus pandemic era, certain pertinent challenges in the purview of automation of the bi-level ventilation process have limited its application in critical management decisions. Method: On an electro-pneumatic platform, computational studies of oxygenation were executed using a FluidSIM-enabled electro-pneumatic workbench configured to mimic a biphasic pressure–controlled ventilator. A double-acting cylinder equipped with 5/2-5/3-4/2-way solenoid-actuator arrangements, an on-delay timer, and a proportional integral derivative (PID) controller architecture is used to record the observations, which are made at the typical minute intervals of 10 s, 12 s, 14 s, and 16 s respectively. Results: Our observation revealed improved ventilation performance for 5/2-5/3-4/2-way solenoid-actuator double-acting cylinder electro-pneumatic circuit based on parameters consisting of tidal volume, exhaust time, and selected actuator valve configurations of exhalation valves. Conclusion: This report demonstrated the contribution of PID controllers in optimizing the delivery of bi-level-type oxygenation during the ventilation procedure. Premised on the configuration of the solenoid-actuators utilized, the concept underscores the role of controlled pressurization in achieving the requirement for oxygen delivery in an archetypal model of a ventilating system. © The Author(s), under exclusive licence to The Brazilian Society of biomedical engineering 2023.

关键词： Ventilation

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Study of the Ability of Hanging Flower Plants to Absorb Solar Heat 3rd

Study of the Ability of Hanging Flower Plants to Absorb Sola...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Harmin, Amalia Syuhada, Ahmad Maulana, Muhammad Ilham of Mechanical Engineering Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

The lack of plants in multi-storey housing causes an increase in environmental temperature, causing global heat. Therefore, thermal comfort is not achieved for humans which will reduce the quality of life, to overcome this, air conditioning (AC) is used. However, due to the high ambient temperature causing an increase in the use of air conditioning which will cause electricity consumption to increase as well. One effort that can be done is to multiply hanging flower plants around multi-storey buildings. This solution is expected to reduce the environmental temperature around high-rise buildings. This study aims to determine the heat absorption by fifteen types of plants tested by the hanging method, so that it can be seen which plants are most suitable to be planted to reduce environmental temperatures. The plants tested were Devils Ivy (Epippremnum Aureum), Purple Heart (Tradescantia), Ant Bag (Discida Geri), Velvet (Gynura Aurantica), Purple Zabrina (Trandescantia Zabrina), Paperomia Hope, Spider Lily (Cholorophytum Comosum), Purple Spider Lily (Trandescantia Spathacea), Nerve Leaf, Anthurium, Pigeon Feet (Altheantera Ficoida), Creeping Charlie (P. Nummularifolia), Candle Flower (Begonia), Zebrakraut, and Episcia. From the results obtained indicate that hanging flower plants affect the decrease in environmental temperature. The most effective among the mentioned hanging flower plants on absorbing heat with the hanging method are Spider Lily (Chlorophytum Comosum). © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Air conditioning

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Assessment of the GHG performance of a gas plant through an interactive business intelligence dashboard

Assessment of the GHG performance of a gas plant through an ...

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International Conference on Innovation and Technological Advances for Sustainability, ITAS 2023

作者： Al-Mohannadi, A.A. Masoud, M.A. Al-Naemi, B.N. Kucukvar, M. Engineering Management Program Qatar University Doha Qatar Department of Mechanical and Industrial Engineering Qatar University Doha Qatar

ISBN: (纸本)9781032803722

This study investigated the greenhouse gas performance of an operating plant from a business intelligence perspective. 2017-2021 GHG data was collected from the plant, transformed, and loaded into Microsoft Power BI, which was used to build the data model. A dynamic visual dashboard was created for data analysis. The analysis was categorized into areas based on the requirements of the functional dashboard. These categories were GHG emissions per time period, top emitting process units, distribution of GHG emissions by pre-defined categories, and energy intensity. The dashboard showed stable emissions and energy intensity from 2018-2021. Dashboard analysis also demonstrated major emissions contributions from gas turbine generators and fired heaters, mainly from fuel I, highlighting key focus areas for future GHG reduction initiatives. GHG abatement strategies were proposed to provide direction for improvement. Although the dashboard was intended to aid strategic decision making, it can be adapted for greater insights and for operational and tactical decision making by using more data in the model and closer cooperation with data and process owners and operators. © 2025 The Author(s).

关键词： Greenhouse gas emissions

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Mapping nanoscale topographic features in thick tissues with speckle diffraction tomography

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Light(Science & Applications) 2023年第9期12卷 1877-1885页

作者： Sungsam Kang Renjie Zhou Marten Brelen Heather K.Mak Yuechuan Lin Peter T.C.So Zahid Yaqoob Laser Biomedical Research Center G.R.Harrison Spectroscopy LaboratoryMassachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina Department of Ophthalmology and Visual Sciences The Chinese University of Hong KongHong KongChina Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biological Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biomedical Engineering Boston UniversityBostonMA 02215USA

Resolving three-dimensional morphological features in thick specimens remains a significant challenge for label-free *** report a new speckle diffraction tomography(SDT)approach that can image thick biological specimens with~500 nm lateral resolution and~1μm axial resolution in a reflection *** SDT,multiple-scattering background is rejected through spatiotemporal gating provided by dynamic speckle-field interferometry,while depth-resolved refractive index maps are reconstructed by developing a comprehensive inverse-scattering model that also considers specimen-induced *** from the high-resolution and full-field quantitative imaging capabilities of SDT,we successfully imaged red blood cells and quantified their membrane fluctuations behind a turbid medium with a thickness of 2.8 scattering mean-free *** importantly,we performed volumetric imaging of cornea inside an ex vivo rat eye and quantified its optical properties,including the mapping of nanoscale topographic features of Dua’s and Descemet’s membranes that had not been previously visualized.

关键词： speckle inverse interferometry

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