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A COMPREHENSIVE METHODOLOGY FOR CALCULATING THE THEORETICAL, TECHNICAL, AND ECONOMIC POTENTIALS OF BIOMASS RESIDUES: A CASE STUDY OF MINAS GERAIS, BRAZIL 32nd

A COMPREHENSIVE METHODOLOGY FOR CALCULATING THE THEORETICAL,...

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32nd European Biomass Conference and Exhibition, EUBCE 2024

作者： Filho, Fernando Bruno Dovichi Lora, Electo Eduardo Silva Maya, Diego Yepes Palacio, Jose Carlos Escobar Mayer, Flavio Dias Venturini, Osvaldo Jose Errera, Marcelo Risso Program of Energy Engineering Institute of Mechanical Engineering Federal University of Itajubá Brazil Chemical Engineering at the Federal University of Santa Maria Brazil Department of Environmental Engineering Federal University of Parana Brazil

The present investigation aims to determine the technical and economic potentials of electricity generation from different types of biomasses in the state of Minas Gerais, using different electricity generation technologies, supported by different thermochemical combustion and gasification routes. The five most available biomasses in the state of Minas Gerais were selected: corn, soybeans, coffee, eucalyptus and sugar cane, whose crops produce residues that can be used for electricity generation. Considering the technical, logistical and economic data of the selected biomasses, the research sought to define the most viable types of residual biomass for electricity generation, in different locations within the state, through a multi-criteria decision-making approach (MCDM). A bibliographic review of the maturity of different types of electricity generation technologies from biomass was carried out, based on available information, schemes and operational parameters of real installations. The level of technological readiness of the different alternatives was also evaluated through a survey with specialists in the sector, concluding that the technologies with the highest level of readiness are the conventional Rankine cycle, the organic Rankine cycle and the use of gasifiers integrated with internal combustion. These three technological alternatives were adopted as options for the generation of electricity from biomass, obtaining a scale of the types of biomasses available, through a multicriteria methodology. The determination of the criteria weight was carried out from an integration with the analytical hierarchy process (AHP). In conjunction with a GIS-MCDA approach, different micro-regions were evaluated considering their respective biomass resources, allowing the estimation of costs and performance of different electricity production technologies. A logical algorithm was developed for the selection of alternatives for energy production from biomass, giving priority

关键词： Operating costs

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Titanium Culture Vessel Presenting Temperature Gradation for the Thermotolerance Estimation of Cells

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Cyborg and Bionic Systems 2023年第1期4卷 166-177页

作者： Chikahiro Imashiro Yangyan Jin Motoaki Hayama Takahiro GYamada Akira Funahashi Katsuhisa Sakaguchi Shinjiro Umezu Jun Komotori Graduate School of Engineering The University of TokyoTokyo 113-0033Japan Department of Mechanical Engineering Keio UniversityYokohamaKanagawa 223-0061Japan School of Integrated Design Engineering Graduate School of Science and TechnologyKeio UniversityYokohamaKanagawa 223-0061Japan Department of Biosciences and Informatics Keio UniversityYokohamaKanagawa 223-0061Japan Department of Integrative Bioscience and Biomedical Engineering Graduate School of Advanced Science and EngineeringWaseda UniversityTWInsTokyo 162-8480Japan Department of Modern Mechanical Engineering Waseda UniversityTokyo 169-8555Japan

Hyperthermia can be induced to exploit the thermal intolerance of cancer cells,which is worse than that of normal cells,as a potential noninvasive cancer *** develop an effective hyperthermia treatment,thermal cytotoxicity of cells should be comprehensively ***,to conduct such investigations,the culture temperature must be accurately *** previously reported a culture system in which the culture temperature could be accurately regulated by employing metallic culture ***,appropriate temperature conditions for hyperthermia depend on the cell ***,several experiments need to be conducted,which is a bottleneck of inducing ***,we developed a cell culture system with temperature gradation on a metallic culture *** Cancer Foundation-7 cells and normal human dermal fibroblasts were used as cancer and normal cell models,*** cells showed stronger thermal tolerance;this was because the novel system immediately exhibited a temperature ***,the developed culture system can be used to investigate the optimum thermal conditions for effective hyperthermia ***,as the reactions of cultured cells can be effectively assessed with the present results,further research involving the thermal stimulation of cells is possible.

关键词： stimulation culture Titanium

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Enhanced battery life prediction with reduced data demand via semi-supervised representation learning

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Journal of Energy Chemistry 2025年第2期101卷 524-534,I0011页

作者： Liang Ma Jinpeng Tian Tieling Zhang Qinghua Guo Chi Yung Chung School of Mechanical MaterialsMechatronic and Biomedical EngineeringUniversity of WollongongNSW 2522Australia Department of Electrical and Electronic Engineering and Research Centre for Grid Modernisation The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China Photonics Research Institute The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China School of Electrical Computer and Telecommunications EngineeringUniversity of WollongongWollongongNSW 2522Australia

Accurate prediction of the remaining useful life(RUL)is crucial for the design and management of lithium-ion *** various machine learning models offer promising predictions,one critical but often overlooked challenge is their demand for considerable run-to-failure data for *** of such training data leads to prohibitive testing efforts as the run-to-failure tests can last for ***,we propose a semi-supervised representation learning method to enhance prediction accuracy by learning from data without RUL *** approach builds on a sophisticated deep neural network that comprises an encoder and three decoder heads to extract time-dependent representation features from short-term battery operating data regardless of the existence of RUL *** approach is validated using three datasets collected from 34 batteries operating under various conditions,encompassing over 19,900 charge and discharge *** method achieves a root mean squared error(RMSE)within 25 cycles,even when only 1/50 of the training dataset is labelled,representing a reduction of 48%compared to the conventional *** also demonstrate the method's robustness with varying numbers of labelled data and different weights assigned to the three decoder *** projection of extracted features in low space reveals that our method effectively learns degradation features from unlabelled *** approach highlights the promise of utilising semi-supervised learning to reduce the data demand for reliability monitoring of energy devices.

关键词： Lithium-ion batteries Battery degradation Remaining useful life Semi-supervised learning

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Performance Investigation of Water Purification System Assisted by Ultrasonic Vibrating Mesh Atomizer 4

Performance Investigation of Water Purification System Assis...

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4th International Symposium on Advances and Innovation in mechanical engineering, ISAIME 2023

作者： Agus Tri Putra, I.D.G. Septiadi, Wayan Nata Negara, Dewa Ngakan Ketut Putra Nindhia, Tjokorda Gde Tirta Refrigeration and Air Conditioning Study Program Department of Mechanical Engineering Politeknik Negeri Bali Bali Bukit Jimbaran80361 Indonesia Study Program of Doctor in Engineering Engineering Faculty Udayana University Bali Bukit Jimbaran80361 Indonesia

The growth of the metropolitan area has necessitated an increase in the demand for freshwater. One of the issues facing modern life is water treatment plant to supporting the communities. The approaches for treatment of the brackish water were carried out utilizing a wide range of technologies and technology. Many different technologies have been created recently to transform brackish water into freshwater using a variety of methods and equipment. One approach to produce extremely tiny water droplets is ultrasonic vibrating mesh. In this research, the performance of ultrasonic vibrating mesh has been investigated to purified the brackish water. This technique is similar to the distillation method in purification system of water traditionally. The evaluation of performance in this context has revolved around two key metrics: the rate of pure water production and the Total Dissolved Solids (TDS) levels. Notably, the TDS content of brackish water saw a significant reduction, di-minishing by approximately 50 ppm, while the resulting quality of the pure water averaged at 354.6 ppm. Concurrently, the flow rate of pure water output was measured at an impressive 4.3 grams per minute. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Distillation

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Thermal Management of Lithium-ion Batteries for Electric Vehicles through Immersion Cooling 22

Thermal Management of Lithium-ion Batteries for Electric Veh...

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22nd InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2023

作者： Williams, Niall P. Trimble, Daniel O'Shaughnessy, Seamus M. University of Dublin Trinity College Department of Mechanical Manufacturing and Biomedical Engineering Dublin Ireland

ISBN: (纸本)9798350321661

Direct contact liquid immersion cooling is receiving increased attention as a potential battery thermal management method. This method offers greater cell thermal homogenization and increased pack performance through enhanced rates of heat transfer. However, limited published literature exists on this thermal management method, particularly on module arrangements. This study presents an experimental investigation of a battery module consisting of four LiFePO4 cylindrical cells connected electrically in parallel and completely immersed in the dielectric fluid Novec 7000. The module is subjected to increasing constant current discharge rates to a maximum of 3C, examining the thermal performance of the proposed method and its capability to minimize cell-to-cell temperature difference, particularly under two-phase conditions. © 2023 IEEE.

关键词： Temperature control

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Comparative analysis of bioinspired algorithms for tuning a flatness-based controller: A ball and beam case study

Comparative analysis of bioinspired algorithms for tuning a ...

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2024 IEEE Latin American Conference on Computational Intelligence, LA-CCI 2024

作者： Pastrana, M.A. Filho, Jose Oniram De A. Limaverde Oliveira, Luiz Henrique Bautista, Jaider Fortaleza, Eugenio Munoz, Daniel M. Department of Mechanical Engineering Brasília Brazil University of Brasília Department of Electrical Engineering Brasília Brazil University of the Amazonia Faculty of Engineering Systems Undergraduate Program Florencia Colombia

ISBN: (纸本)9798350374575

This paper provides a comprehensive comparative analysis of the performance of four bioinspired algorithms (Differential Evolution, Grasshopper Optimization Algorithm, Moth-flame Optimization, and Particle Swarm Optimization) in designing a flatness-based controller for a ball and beam system simulated in MATLAB/Simulink environment. The assessment involves the tuning of feedback gains utilizing four distinct fitness functions: Integral Square Error, Integral Absolute Error, Integral Time Absolute Error, and an ad-hoc cost function. Hypothesis tests are employed to choose the optimal controllers from each combination for every bioinspired algorithm and a fitness function. Subsequently, a control performance analysis of these controllers for the ball and beam system is conducted, focusing on critical parameters such as overshoot, settling time, and steady-state error. This analysis demonstrates that all the controllers achieve a zero steady-state error. Noteworthy is the flatness-based controller tuned with the bioinspired Grasshopper Optimization Algorithm and utilizing the Integral Time Absolute Error fitness function, which stands out for achieving the fastest response with the lowest overshoot. This particular controller emerges as the most recommended choice for the specified application. © 2024 IEEE.

关键词： Particle swarm optimization (PSO)

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Biomaterials / bioinks and extrusion bioprinting

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Bioactive Materials 2023年第10期28卷 511-536页

作者： X.B.Chen A.Fazel Anvari-Yazdi X.Duan A.Zimmerling R.Gharraei N.K.Sharma S.Sweilem L.Ning Department of Mechanical Engineering University of Saskatchewan57 Campus DrS7K 5A9SaskatoonCanada b Division of Biomedical EngineeringUniversity of Saskatchewan57 Campus DrSaskatoonS7K 5A9Canada c Department of Mechanical EngineeringCleveland State UniversityClevelandOH44115USA

Bioinks are formulations of biomaterials and living cells, sometimes with growth factors or other biomolecules, while extrusion bioprinting is an emerging technique to apply or deposit these bioinks or biomaterial solutions to create three-dimensional (3D) constructs with architectures and mechanical/biological properties that mimic those of native human tissue or organs. Printed constructs have found wide applications in tissue engineering for repairing or treating tissue/organ injuries, as well as in vitro tissue modelling for testing or validating newly developed therapeutics and vaccines prior to their use in humans. Successful printing of constructs and their subsequent applications rely on the properties of the formulated bioinks, including the rheological, mechanical, and biological properties, as well as the printing process. This article critically reviews the latest developments in bioinks and biomaterial solutions for extrusion bioprinting, focusing on bioink synthesis and characterization, as well as the influence of bioink properties on the printing process. Key issues and challenges are also discussed along with recommendations for future research.

关键词： 3D bioprinting Extrusion Bioinks Biomaterials Tissue engineering

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Dynamic microphysiological system chip platform for high-throughput,customizable,and multi-dimensional drug screening

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Bioactive Materials 2024年第9期39卷 59-73页

作者： Yuxuan Zhu Deming Jiang Yong Qiu Xin Liu Yuhan Bian Shichao Tian Xiandi Wang K.Jimmy Hsia Hao Wan Liujing Zhuang Ping Wang Biosensor National Special Laboratory Key Laboratory of Biomedical Engineering of Ministry of EducationDepartment of Biomedical EngineeringZhejiang UniversityHangzhouZhejiang310027China Schools of Mechanical&Aerospace Engineering of Chemical&Biomedical EngineeringNanyang Technological University639798Singapore Cancer Center Binjiang Institute of Zhejiang UniversityHangzhou310027China The MOE Frontier Science Center for Brain Science&Brain-machine Integration Zhejiang UniversityHangzhou310027China State Key Laboratory of Transducer Technology Chinese Academy of SciencesShanghai200050China

Spheroids and organoids have attracted significant attention as innovative models for disease modeling and drug *** employing diverse types of spheroids or organoids,it is feasible to establish microphysiological systems that enhance the precision of disease modeling and offer more dependable and comprehensive drug ***-throughput microphysiological systems that support optional,parallel testing of multiple drugs have promising applications in personalized medical treatment and drug ***,establishing such a system is highly challenging and requires a multidisciplinary *** study introduces a dynamic Microphysiological System Chip Platform(MSCP)with multiple functional microstructures that encompass the mentioned *** developed a high-throughput lung cancer spheroids model and an intestine-liverheart-lung cancer microphysiological system for conducting parallel testing on four anti-lung cancer drugs,demonstrating the feasibility of the *** microphysiological system combines microscale and macroscale biomimetics to enable a comprehensive assessment of drug efficacy and side ***,the microphysiological system enables evaluation of the real pharmacological effect of drug molecules reaching the target lesion after absorption by normal organs through fluid-based physiological *** MSCP could serves as a valuable platform for microphysiological system research,making significant contributions to disease modeling,drug development,and personalized medical treatment.

关键词： Microphysiological system Organ-on-a-chip Biomimetics High throughput Multidimensional drug screening

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Multi-Modal Proprioceptive Sensors Based on Liquid Metal Capable of Self-Decoupling Measurement 14

Multi-Modal Proprioceptive Sensors Based on Liquid Metal Cap...

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14th IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems, CYBER 2024

作者： Lu, Sitong Xie, Xiangshun Li, Yuhui Jiao, Jian Chen, Diansheng Wang, Li School of Mechanical Materials Engineering North China University of Technology Beijing100144 China National University of Singapore Department of Biomedical Engineering Singapore119276 Singapore School of Mechanical Engineering and Automation Beihang University Beijing100191 China

ISBN: (纸本)9798331506056

In recent years, flexible sensing technology is rapidly developing due to the exploration of advanced materials and structure design. Multi-modal proprioceptive sensors are necessary for achieving accurate and intelligent manipulation of robots. In this paper, a liquid metal-based multi-modal proprioceptive soft sensor is proposed, which is capable of self-decoupling measurements of stretching, bending, and twisting. The structure of the sensor is composed of multiple liquid metal microfluidic sensing fibers. Through the spatial distribution of microfluidic sensing fibers, the sensor is able to detect multi-modal proprioceptive deformations. Upon the sensor undergoing deformation, the resistances of different microfluidic sensing fibers experience different changes. Multi-modal proprioceptive deformations can be decoupled by analyzing the resistance changes of different microfluidic sensing fibers. In addition, we further explore a simple, low-cost fabrication method. At last, the experiments demonstrate that the proposed sensor can effectively predict the proprioceptive deformation for soft actuator, i.e., stretching, bending and twisting. This self-decoupled multi-modal proprioceptive sensing method might pave the way for future intelligent soft robots. © 2024 IEEE.

关键词： Microfluidics

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VAT PHOTOPOLYMERIZATION 3D PRINTING OF MULTIFUNCTIONAL CONTACT LENSES FOR OCULAR APPLICATIONS

VAT PHOTOPOLYMERIZATION 3D PRINTING OF MULTIFUNCTIONAL CONTA...

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ASME 2024 International mechanical engineering Congress and Exposition, IMECE 2024

作者： Hisham, Muhammed Lee, Sungmun Butt, Haider Mechanical & Nuclear Engineering Department Khalifa University Abu Dhabi United Arab Emirates Biomedical Engineering & Biotechnology Department Khalifa University Abu Dhabi United Arab Emirates

ISBN: (纸本)9780791888629

Smart contact lenses offer unique opportunities as personalized, non-invasive devices that simultaneously perform a wide range of functions. However, the actual production of smart contact lenses is rather challenging. Herein, two vat photopolymerization 3D printing techniques are presented for producing multimaterial and multifunctional contact lenses. In the first technique, a contact lens is 3D printed with hollow channels, which are later filled with resin containing different dyes or drugs. In the second method, functionalized structures are directly 3D printed on top of a commercial contact lens. Atto dyes enable red-green and blue-yellow color vision correction. Photochromic dye enables UV monitoring, warning the wearer in case of UV hazards. Multifunctional contact lenses which can perform ocular health monitoring can also be produced through these techniques. Drug delivery is explored from drug-loaded structures added on the contact lens. Herbal eye drops and phenol red were utilized for studying drug release. The dyes and drugs are incorporated into hydroxyethyl methacrylate and polyethylene glycol diacrylate (HEMA:PEGDA) hydrogels. Drug release rate can be varied by varying the drug loading or the hydrogel composition. The multifunctional contact lenses displayed excellent optical and material properties. Drug loaded structures are printed as peripheral structures that do not hinder vision. These multifunctional contact lenses can enable simultaneous color vision correction, health monitoring and drug delivery without disturbing the daily routine of the wearer. The study demonstrates the potential of vat photopolymerization 3D printing for cost-effective production of multifunctional contact lenses. Copyright © 2024 by ASME.

关键词： Photopolymerization

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