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Enhanced Dye Adsorption and Bacterial Removal of Magnetic Nanoparticle-Functionalized Bacterial Cellulose Acetate Membranes

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Journal of Renewable materials 2024年第9期12卷 1605-1624页

作者： Heru Suryanto Daimon Syukri Fredy Kurniawan Uun Yanuhar Joseph Selvi Binoj Sahrul Efendi Fajar Nusantara Jibril Maulana Nico Rahman Caesar Komarudin Komarudin Centre of Advanced Material for Renewable Energy(CAMRY) Universitas Negeri MalangMalang65145Indonesia Department of Mechanical and Industrial Engineering Universitas Negeri MalangMalang65145Indonesia Department of Food and Agricultural Product Technology Faculty of Agricultural TechnologyAndalas UniversityPadang25163Indonesia Department of Chemistry Institut Teknologi Sepuluh NopemberSurabaya60111Indonesia Study Program of Aquatic Resources Management Faculty of Fisheries and Marine ScienceBrawijaya UniversityMalang65145Indonesia Institute of Mechanical Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical Sciences(SIMATS)Saveetha UniversityChennai602105India Faculty of Vocational Universitas Negeri MalangMalang65145Indonesia

Utilizing biomass waste as a potential resource for cellulose production holds promise in mitigating environmental *** current study aims to utilize pineapple biowaste extract in producing bacterial cellulose acetate-based membranes with magnetic nanoparticles(Fe_(3)O_(4)nanoparticles)through the fermentation and esterification process and explore its *** bacterial cellulose fibrillation used a high-pressure homogenization procedure,and membranes were developed incorporating 0.25,0.50,0.75,and 1.0 wt.%of Fe3O4 nanoparticles as magnetic nanoparticle for *** membrane characteristics were measured in terms of Scanning Electron Microscope,X-ray diffraction,Fourier Transform Infrared,Vibrating Sample Magnetometer,antibacterial activity,bacterial adhesion and dye adsorption *** results indicated that the surface morphology of membrane changes where the bacterial cellulose acetate surface looks *** crystallinity index of membrane increased from 54.34%to 68.33%,and the functional groups analysis revealed that multiple peak shifts indicated alterations in membrane functional ***,adding Fe_(3)O_(4)-NPs into membrane exhibits paramagnetic behavior,increases tensile strength to 73%,enhances activity against *** and ***,and is successful in removing bacteria from wastewater of the river to 67.4%and increases adsorption for anionic dyes like Congo Red and Acid Orange.

关键词： Bacterial cellulose dye adsorption Fe_(3)O_(4)nanoparticles membrane pineapple waste

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EVALUATING DESIGN RATIONALE

EVALUATING DESIGN RATIONALE

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ASME 2024 International Design engineering Technical Conferences and Computers and Information in engineering Conference, IDETC-CIE 2024

作者： Mirabito, Yakira Liu, Xiaowen Goucher-Lambert, Kosa Dept. of Mechanical Engineering University of California Berkeley BerkeleyCA United States Cognitive Science Program University of California Berkeley BerkeleyCA United States

ISBN: (纸本)9780791888407

Design rationale captures the justification behind a design decision. Often, rationales vary in the content and depth of information, making the study and comparison of rationales challenging. This project aims to characterize design rationale and develop a computational approach to evaluate design rationale quality at scale. In total, 2250 rationales were machine-generated using GPT across two different representations, and a portion of the rationales (n = 512) were evaluated by two raters across five dimensions of quality. Rationales were then characterized using natural language processing techniques, resulting in 108 linguistic features for each rationale. The evaluations and linguistic features were used to build eight predictive models for each quality dimension. The main results show that structured rationales were rated higher than unstructured rationales across the five dimensions. Thus, the tested feature, specification, and evidence (FSE) framework was shown to be a worthwhile approach to represent the justification behind a design decision. Moreover, key linguistic features that correlate with higher quality ratings were identified. Future work will explore how design rationale quality and characteristics impact design decisions, particularly in a human-AI teaming context where generative design recommendations could benefit from including generative design rationales. Copyright © 2024 by ASME.

关键词： Linguistics

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Super-Resolution Displacement Spectroscopic Sensing over a Surface“Rainbow”

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engineering 2022年第10期17卷 75-81页

作者： Lyu Zhou Nan Zhang Chang Chieh Hsu Matthew Singer Xie Zeng Yizheng Li Haomin Song Josep Jornet Yun Wu Qiaoqiang Gan Department of Electrical Engineering The State University of New York at BuffaloBuffaloNY 14260USA Department of Biomedical Engineering The State University of New York at BuffaloBuffaloNY 14260USA Department of Electrical and Computer Engineering Northeastern UniversityBostonMA 02115USA Material Science Engineering Program King Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia

Subwavelength manipulation of light waves with high precision can enable new and exciting applications in spectroscopy,sensing,and medical *** these applications,miniaturized spectrometers are desirable to enable the on-chip analysis of spectral *** particular,for imaging-based spectroscopic sensing mechanisms,the key challenge is to determine the spatial-shift information accurately(i.e.,the spatial displacement introduced by wavelength shift or biological or chemical surface binding),which is similar to the challenge presented by super-resolution ***,we report a unique"rainbow"trapping metasurface for on-chip spectrometers and *** with super-resolution image processing,the low-setting 4×optical microscope system resolves a displacement of the resonant position within 35 nm on the plasmonic rainbow trapping metasurface with a tiny area as small as0.002 *** unique feature of the spatial manipulation of efficiently coupled rainbow plasmonic resonances reveals a new platform for miniaturized on-chip spectroscopic analysis with a spectral resolution of 0.032 nm in wavelength *** this low-setting 4×microscope imaging system,we demonstrate a biosensing resolution of 1.92×109exosomes per milliliter for A549-derived exosomes and distinguish between patient samples and healthy controls using exosomal epidermal growth factor receptor(EGFR)expression values,thereby demonstrating a new on-chip sensing system for personalized accurate bio/chemical sensing applications.

关键词： Rainbow trapping Metasurface Surface plasmon polaritons Super-resolution displacement On-chip biosensing

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Machine learning assisted prediction of dielectric temperature spectrum of ferroelectrics

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Journal of Advanced Ceramics 2023年第9期12卷 1793-1804页

作者： Jingjin He Changxin Wang Junjie Li Chuanbao Liu Dezhen Xue Jiangli Cao Yanjing Su Lijie Qiao Turab Lookman Yang Bai Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Institute for Advanced Material and Technology University of Science and Technology BeijingBeijing 100083China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China Sichuan Province Key Laboratory of Information Materials and Devices Application College of Optoelectronic EngineeringChengdu University of Information TechnologyChengdu 610225China School of Materials Science and Technology University of Science and Technology BeijingBeijing 100083China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China AiMaterials Research LLC Santa FeNM 87501USA

In material science and engineering,obtaining a spectrum from a measurement is often time-consuming and its accurate prediction using data mining can also be *** this work,we propose a machine learning strategy based on a deep neural network model to accurately predict the dielectric temperature spectrum for a typical multi-component ferroelectric system,i.e.,(Ba_(1−x−y)Ca_(x)Sr_(y))(Ti_(1−u−v−w)Zr_(u)Sn_(v)Hf_(w))O_(3).The deep neural network model uses physical features as inputs and directly outputs the full spectrum,in addition to yielding the octahedral factor,Matyonov–Batsanov electronegativity,ratio of valence electron to nuclear charge,and core electron distance(Schubert)as four key *** to the physically meaningful features,our model exhibits better performance and generalization ability in the broader composition space of BaTiO3-based solid *** the prediction accuracy is superior to traditional machine learning models that predict dielectric permittivity values at each ***,the transition temperature and the degree of dispersion of the ferroelectric phase transition are easily extracted from the predicted spectra to provide richer physical *** prediction is also experimentally validated by typical samples of(Ba_(0.85)Ca_(0.15))(Ti_(0.98–x)Zr_(x)Hf_(0.02))O_(3).This work provides insights for accelerating spectra predictions and extracting ferroelectric phase transition information.

关键词： machine learning(ML) dielectric temperature spectrum ferroelectrics phase transition information

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Modeling of the Bending Behavior to Study Nested-Cylinder Structure in Spicules 152nd

Modeling of the Bending Behavior to Study Nested-Cylinder St...

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152nd Annual Meeting and Exhibition of The Minerals, Metals and materials Society, TMS 2023

作者： Lowe, Olivia Peco, Christian Tavangarian, Fariborz Mechanical Engineering Program School of Science Engineering and Technology Pennsylvania State University Harrisburg MiddletownPA17057 United States Department of Engineering Science and Mechanics Pennsylvania State University University Park State CollegePA16802 United States

ISBN: (纸本)9783031225239

The spicule structure of the Euplectella aspergillum sponge (EA) looks promising in the search for mechanical enhancements of brittle materials. Researchers have explored how the various structural levels of the EA affect the properties of the material. Specifically, the nested-cylinder structure of the EA’s spicules increases the strength and toughness of the sponge. However, there is limited research on this structural level of the sea sponge. This research uses finite element analysis (FEA) to model the spicule structure in COMSOL, setting the stage for further research into this bio-inspired material. The results of the initial bending tests prove this procedure of analysis is useful in the study of the spicule structure. © 2023, The Minerals, Metals & materials Society.

关键词： Bending tests

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Temperature field calculation of rail flash welding

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High-Speed Railway 2024年第2期2卷 116-121页

作者： Rui Xu Min Zhang Zhenkun Gao Guo Zhao Wei Ding Shouming Wang Peng Zhang Xiang Liu Jingjing Li Material Science&Engineering Research Center School of MechanicalElectronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Institute of Metals and Chemistry China Academy of Railway Sciences Group Co.Ltd.Beijing 100081China Department of Industrial and Manufacturing Engineering Pennsylvania State UniversityUniversity ParkPA 16802USA

The forging stage of rail flash welding has a decisive influence on joint strength,and the study of the temperature distribution in the process has an important role in further improving joint *** this paper,three calculation methods for the temperature field are ***,the finite element model of the temperature field before forging rail flash welding is established by using the transient heat module of Ansys software and verified by infrared temperature ***,the temperature distribution of different parts of the rail before flash welding is obtained by using infrared thermal imaging ***,Matlab software is used to calculate the temperature of the non-measured ***,the temperature distribution function along the rail axis is fitted through the temperature measurement *** temperature distribution before the top forging of the rail flash welding can be used to analyze the joint and heat-affected zone organization and properties effectively and to guide the parameter setting and industrial production.

关键词： Flash welding Temperature field Joint strength Software calculation

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Evolution of Iron-Based Metallic Glass Composite Coating with Enhanced Corrosion Resistance and Biocompatibility

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Arabian Journal for science and engineering 2024年第8期49卷 10547-10559页

作者： Ibrahim, Mahmoud Z. Sarhan, A.A.D. Kuo, T.Y. Yusof, Farazila Hamdi, M. Chang, C.P. Lee, T.M. Chien, C.S. Department of Mechanical Engineering Faculty of Engineering Ain Shams University Cairo 11517 Egypt Advanced Manufacturing & Material Processing (AMMP) Research Centre Department of Mechanical Engineering Faculty of Engineering University of Malaya Kuala Lumpur 50603 Malaysia Department of Mechanical Engineering Faculty of Engineering University of Malaya Kuala Lumpur 50603 Malaysia Department of Mechanical Engineering King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Interdisciplinary Research Centre for Intelligent Manufacturing & Robotics King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Department of Mechanical Engineering Southern Taiwan University of Science and Technology Tainan 701 Taiwan Department of Medical Research Chimei Medical Centre Tainan 710 Taiwan Institute of Oral Medicine National Cheng Kung University Tainan 701 Taiwan Department of Orthopaedics Chimei Foundation Hospital Tainan 710 Taiwan

Metallic glasses are a new class of metallic alloys that attract increasing attention in bone implants due to their ultrahigh wear resistance and hardness, high toughness and superior strength. However, their cytotoxicity and biocorrosion resistance are still under investigation. In this research, the cytotoxicity and biocorrosion resistance of iron-based metallic glass composite coating are explored. To approach real-life conditions, the biocorrosion resistance of the proposed coating in phosphate buffer saline (PBS) is evaluated via immersion test for 30 days followed by an electrochemical corrosion test. Then, human bone cells (MG-63) are cultured on corroded samples and the cell viability is determined using MTT assay, in addition to cell attachment examination. The results revealed the formation of a metallic glass composite layer with 78.76% amorphous content. Additionally, the metallic glass composite demonstrated excellent and stable corrosion resistance in PBS over 30 days compared to the substrate. The MTT assay has shown that the cytotoxicity of iron-based metallic glass composite is within the permitted levels according to ISO 10993–5, Part 5 vol 2009. The cells were well attached to the surface besides, showing a healthy growth after 7 days of culture. These results confirm the in vitro biocompatibility of iron-based metallic glass composite coating for biomedical implant applications. © 2023, King Fahd University of Petroleum & Minerals.

关键词： Biocorrosion Coating Cytotoxicity Iron-based metallic glass composite Joint replacement applications

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"Enhanced Energy Generation Via Composite Catalyst Gasification of In-Situ Plastic Waste"

SSRN

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SSRN 2024年

作者： Abdelrahman, Ameen Erchiqui, Fouad Nedil, Mourad Material science Département School of Engineering Canada Mechanical Engineering Department Université du Québec en Abitibi-Témiscamingue Canada Master of Engineering Program School of Genius

This study responds to the urgent global imperative to address climate change by shifting towards sustainable practices, with a particular focus on mitigating the environmental impact of plastic waste. We delve into the gasification of municipal plastic solid waste as an alternative to traditional disposal methods like incineration or landfilling. Our approach involves the development of composite materials incorporating manganese, titanium, and iron oxides within clay. By optimizing key gasification parameters as heating rate, loading, and reaction time, we aim to maximize gas yields and improve the quality of products. Through characterization techniques XRD, TEM, SEM, GC, and EDX analysis, © 2024, The Authors. All rights reserved.

关键词： Gasification

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Ultra-high strength yet superplasticity in a hetero-grain-sized nanocrystalline Au nanowire

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Journal of materials science & Technology 2022年第6期101卷 95-106页

作者： Libo Fu Deli Kong Chengpeng Yang Jiao Teng Yan Lu Yizhong Guo Guo Yang Xin Yan Pan Liu Mingwei Chen Ze Zhang Lihua Wang Xiaodong Han Beijing Key Lab of Microstructure and Properties of Advanced Materials Beijing University of TechnologyBeijing 100124China Department of Material Physics and Chemistry University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Materials Science and Engineering Johns Hopkins UniversityBaltimoreMD 21218United States School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China

Nanocrystalline metals often display a high strength up to the gigapascal level,yet they suffer from poor *** studies have shown that the development of hetero-sized grains can efficiently overcome the strength-ductility trade-off of nanocrystalline ***,whether this strategy can lead to the fabrication of nanocrystalline nanowires exhibiting both high strength and superplasticity is unclear,similar to the atomistic deformation *** this paper,we show that ultra-small nanocrystalline Au nanowires comprising grains in both the Hall–Petch and inverse Hall–Petch grain-size regions can exhibit extremely high uniform elongation(236%)and high strength(2.34 gigapascals)at room *** situ atomic-scale observations revealed that the plastic deformation underwent two *** the first stage,the super-elongation ability originated from the intergrain plasticity of small grains via mechanisms such as grain boundary migration and grain *** intergrain plasticity caused the grains in the heterogeneous-structured nanowires to grow very *** the second stage,the superelongation ability originated from intragrain plasticity accompanied by the diffusion of surface *** results show that the hetero-grain-sized nanocrystalline nanowires,comprising grains with sizes both in the strongest Hall–Petch effect region and the inverse Hall–Petch effect region,were simultaneously ultrastrong and *** displayed neither a strength-ductility trade-off nor plastic instability.

关键词： In situ mechanical property Metallic nanowires Transmission electron microscopy Plastic deformation

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Inexpensive Stereo System Using ReStereoNet for Disparity Map Estimation 7

Inexpensive Stereo System Using ReStereoNet for Disparity Ma...

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7th International Conference on Automation, Control and Robots, ICACR 2023

作者： Tao, Linh La, Thai Hoang, Hung Nguyen, Trung Nguyen, Tinh Bui, Ngoc-Tam Hanoi University of Science and Technology School of Mechanical Engineering Hanoi Viet Nam Shibaura Institute of Technology Innovative Global Program Japan

ISBN: (纸本)9798350302882

The article presents an idea of developing an inexpensive stereo camera system to replace for 3D camera on mobile robots. The stereo system is built from two in-expensive camera installed in an 3D printed base. To gain disparity map from left and right images, the system applies PSMNET algorithm, a Convolutional Neural Network based method. The system with PSMNET performs better than traditional block matching algorithm in term of accuracy and robustness. The experimental results show possibility of using that camera system on mobile robot for autonomous navigation tasks. © 2023 IEEE.

关键词： Mobile robots

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