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Review of Cellulose smart Material: Biomass Conversion Process and Progress on Cellulose-Based Electroactive Paper

Journal of Renewable Materials 2018年第1期6卷 1-25页

作者： s.H.Hassan Lee Hwei Voon t.s.velayutham Lindong Zhai Hyun Chan Kim Jaehwan Kim Nanotechnology and Catalysis Research Center(NanoCat) Institute of Postgraduate StudiesUniversity of Malaya50603 Kuala LumpurMalaysia Low Dimensional Materials Research Center Department of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Department of Mechanical Engineering Inha UniversityIncheon 22212South Korea

Cellulose is a renewable biomass material and natural polymer which is abundantly available on Earth,and includes agricultural wastes,forestry residues,and woody *** excellent and smart characteristics of cellulose materials,such as lightweight,biocompatibility,biodegradability,high mechanical strength/stiffness and low thermal expansibility,have made cellulose a highpotential material for various industry *** has recently been discovered as a smart material in the electroactive polymers family which carries the name of cellulose-based electroactive paper(EAPap).the shear piezoelectricity in cellulose polymers is able to induce large displacement output,low actuation voltage,and low power consumption in the application of biomimetic sensors/actuators and electromechanical *** present study provides an overview of biomass pretreatment from various lignocellulosic cellulose(LC)resources and nanocellulose production via tEMPO-mediated oxidation reaction,followed by the production of different types of EAPap versus its performance,and lastly the applications of EAPap in different areas and ***,LC biomass consists mainly of cellulose having a small content of hemicelluloses and lignins which form a defensive inner structure against the degradation of plant cell ***,selective approaches are discussed to ensure proper extraction of cellulosic fibers from complex biomass for further minimization to *** addition,a comprehensive review of the development of cellulose-based EAPap as well as fabrication,characterization,performance enhancement and applications of EAPap devices are discussed herein.

关键词： Biomass pretreatment nanocellulose renewable materials smart materials actuators

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Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-tALOOKOLAEI H.GHANDVAR E.JUMAEV s.KHAtIR t.CUONG-LE school of Mechanical Engineering Babol Noshirvani University of Technology Department of Mechanical Engineering Faculty of Engineering New Uzbekistan University University of Business and science Center for Engineering Application and technology solutions Ho Chi Minh City Open University

this paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. the strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. the curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. subsequently, the natural frequencies and transient response of the system are determined. the accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANsYs, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

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Design and Implementation of t-shaped Planar Antenna for MIMO Applications

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Computers, Materials & Continua 2021年第11期69卷 2549-2562页

作者： t.Prabhu s.Chenthur Pandian Department of ECE SNS College of TechnologyCoimbatore641035Tamil NaduIndia Department of EEE SNS College of TechnologyCoimbatore641035Tamil NaduIndia

this paper proposes,demonstrates,and describes a basic t-shaped Multi-Input and Multi-Output(MIMO)antenna with a resonant frequency of 3.1 to 10.6 *** with the U-shaped antenna,the mutual coupling is minimized by using a t-shaped patch *** t-shaped patch antenna shapes filter properties are tested to achieve separation over the 3.1 to 10.6 GHz frequency *** parametric analysis,including width,duration,and spacing,is designed in the MIMO applications for good *** the FR4 substratum,the configuration of MIMO is *** appropriate dielectric material ε_(r)=4.4 is introduced using this contribution and application array feature of the MIMO *** this paper,FR4 is used due to its high dielectric strength and low *** 3.1 to 10.6 GHz and 3sRR,t-shaped patch antennas are used in the field to increase *** suggested tshaped MIMO antenna is calculated according to the HFss 13.0 program simulation *** antenna suggested is,therefore,a successful WLAN candidate.

关键词： Multi-input and multi-output FR4 substratum t-shaped patch antennas IsM band HFss 13.0 WLAN

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Deciphering the mechanobiology of microglia in traumatic brain injury with advanced microsystems

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Neural Regeneration Research 2025年第8期20卷 2304-2306页

作者： Anthony Procès sylvain Gabriele Univ.Grenoble Alpes InsermU1216Grenoble Institut des NeurosciencesGrenobleFrance Mechanobiology&Biomaterials Group CIRMAPResearch Institute for BiosciencesUniversity of MonsMonsBelgium

Advanced microsystems in traumatic brain injury research:traumatic brain injury(tBI)results from a mechanical insult to the brain,leading to neuronal and axonal damage and subsequently causing a secondary *** minutes ... 详细信息

关键词： traumatic injury damage

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Wind energy conversion system using perturb&observe-based maximum power point approach interfaced with t-type three-level inverter connected to grid

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Clean Energy 2022年第4期6卷 534-549页

作者： Pranupa s A.t.sriram s.Nagaraja Rao M s Ramaiah University of Applied sciences BangaloreIndia

In this paper,the performance of a permanent magnet synchronous generator(PMsG)-based wind energy conversion system(WECs)supplied to an uncontrolled rectifier-fed boost converter(BC)interfaced with a three-phase t-type three-level inverter(tLI)has been *** proposed WECs involves three converters,namely an uncontrolled rectifier that is used for conversion from AC to DC;a BC supplied by a PMsG-fed rectifier used to enhance the voltage gain;and a grid-connected three-phase t-type tLI is proposed to eliminate power-quality issues with synchronization of grid voltage and *** main goal of this research is to model and control the grid-connected t-type tLI using a d-q synchronous frame for wind energy for regulating the DC-link voltage and transferring the generated wind power from the BC to the ***,the perturb&observe(P&O)-based maximum power point(MPP)approach is recommended to keep track of the MPP for a BC that is supplied from a PMsG-based WECs under constant and variable wind *** proposed PMsG-based WECs interfaced with grid-connected t-type tLI using d-q control has been computationally modelled,simulated and validated with constant and variable speeds using MAtLAB®and simulink®.It is confirmed that the P&O-based MPP approach ensures maximum power for varying wind speeds,and the total harmonic distortion of the t-type tLI grid current value is 3.18%,which is within IEEE-519 ***,with grid synchronization,the power factor of the t-type tLI is maintained at unity to avoid power-quality issues.

关键词： boost converter grid synchronization perturb&observe t-type three-level inverter wind turbine

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semantic segmentation of Lumbar Vertebrae Using Meijering U-Net(MU-Net)on spine Magnetic Resonance Images

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Computer Modeling in Engineering & sciences 2025年第1期142卷 733-757页

作者： Lakshmi s V V shiloah Elizabeth Darmanayagam sunil Retmin Raj Cyril Department of Computer science and Engineering College of Engineering GuindyAnna UniversityChennai600025India Department of Information technology Madras Institute of TechnologyAnna UniversityChrompetChennai600044India

Lower back pain is one of the most common medical problems in the world and it is experienced by a huge percentage of people *** to its ability to produce a detailed view of the soft tissues,including the spinal cord,nerves,intervertebral discs,and vertebrae,Magnetic Resonance Imaging is thought to be the most effective method for imaging the *** semantic segmentation of vertebrae plays a major role in the diagnostic process of lumbar *** is difficult to semantically partition the vertebrae in Magnetic Resonance Images from the surrounding variety of tissues,including muscles,ligaments,and intervertebral discs.U-Net is a powerful deep-learning architecture to handle the challenges of medical image analysis tasks and achieves high segmentation *** work proposes a modified U-Net architecture namely MU-Net,consisting of the Meijering convolutional layer that incorporates the Meijering filter to perform the semantic segmentation of lumbar vertebrae L1 to L5 and sacral vertebra ***-colour mask images were generated and used as ground truth for training the *** work has been carried out on 1312 images expanded from t1-weighted mid-sagittal MRI images of 515 patients in the Lumbar spine MRI Dataset publicly available from Mendeley *** proposed MU-Net model for the semantic segmentation of the lumbar vertebrae gives better performance with 98.79%of pixel accuracy(PA),98.66%of dice similarity coefficient(DsC),97.36%of Jaccard coefficient,and 92.55%mean Intersection over Union(mean IoU)metrics using the mentioned dataset.

关键词： Computer aided diagnosis(CAD) magnetic resonance imaging(MRI) semantic segmentation lumbar vertebrae deep learning U-Net model

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transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 177-192页

作者： M.NAVEED M.IMRAN t.AsGHAR Z.ABBAs Department of Mathematics Division of Science and TechnologyUniversity of Education Department of Mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAM).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

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Optimization of Cu content for the development of high-performance t5-treated thixo-cast Al-7si-0.5Mg-Cu(wt.%)alloy

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Journal of Materials science & technology 2021年第34期93卷 178-190页

作者： K.Yamamoto M.takahashi Y.Kamikubo Y.sugiura s.Iwasawa t.Nakata s.Kamado Nagaoka University of technology NagaokaJapan Asanuma Giken Co. Ltd.HamamatsuJapa Industrial Research Institute of shizuoka Prefecture ShizuokaJapan

Cu content has been successfully optimized in a thixo-cast and directly aged(t5-treatment)Al-7 si-0.5 Mg(wt.%)*** after the 0.5%Cu addition,plate-like Al_(2)Cu(θ’)phases,which contribute to high strengths and large plasticity,are *** formation of a large fraction of Cu-containing brittle phases could be suppressed as ***,the Al-7si-0.5Mg-0.5Cu alloy exhibits high ultimate tensile strength,0.2%proof stress,and elongation to failure of 296 MPa,209 MPa,and 8.8%,*** results in a high quality index similar to that of solution-treated and subsequently aged(t6-treated)Al-7 si-Mg alloys.A Cu addition over 1.0%further improves the strengths;however,this leads to poor ductility because of the high fraction of Cu-containing brittle phases.

关键词： Al-si-Mg-Cu alloy thixo-casting t5-treatment Mechanical property Microstructure

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Ethyl thiosemicarbazide intercalated organophilic calcined hydrotalcite as a potential sorbent for the removal of uranium(VI) and thorium(IV) ions from aqueous solutions

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Journal of Environmental sciences 2013年第4期25卷 717-725页

作者： t.s.Anirudhan s.Jalajamony Department of Chemistry University of KeralaKariavattomTrivandrum 695 581India

this work was conducted to determine the practicability of using a new adsorbent 4-ethyl thiosemicarbazide intercalated, organophilic calcined hydrotalcite （EtsC-OHtC） for the removal of uranium （U（Ⅵ））, and thorium （th（Ⅳ）） from water and wastewater. the FtIR analysis helped in realizing the involvement of nitrogen and sulphur atoms of EtsC in binding the metal ions through complex formation. Parameters like adsorbent dosage, solution pH, initial metal ions concentration, contact time and ionic strength, that influence adsorption phenomenon, were studied. the optimum pH for maximum adsorption of U（VI） and th（IV） was found to be in the range 4.0-6.0. the contact time required for reaching equilibrium was 4 hr. the pseudo second-order kinetic model was the best fit to represent the kinetic data. Analysis of the equilibrium adsorption data using Langmuir, Freundlich and sips models showed that the Freundlich model was well suited to describe the metal ions adsorption. the KF values were 25.43 and 29.11 mg/g for U（Ⅵ） and th（Ⅳ）, respectively, at 30℃. the adsorbent can be regenerated effectively from U（Ⅵ） and th（Ⅳ） loaded ones using 0.01 mol/L HC1. the new adsorbent was quite stable for many cycles, without much reduction in its adsorption capacity towards the metals.

关键词： hydrotalcite 4-ethyl thiosemicarbazide uranium(Ⅵ) thorium(Ⅳ) adsorption.

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Ion Heating from Nonlinear Landau Damping of High Mode Number toroidal Alfvén Eigenmodes

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Plasma science and technology 2015年第7期17卷 534-538页

作者： t.s.HAHM Department of Nuclear Engineering Seoul National University

Bulk ion heating rate from nonlinear Landau damping of high mode number toroidal Alfven Eigenmodes （tAEs） is calculated in the frame work of weak turbulence theory. the heating rate is lower than the nonlinear spect... 详细信息

关键词： Alfven wave nonlinear Landau damping toroidal Alfven eigenmode

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