检索结果-内蒙古大学图书馆

46th Annual International Conference of the IEEE engineering in Medicine and Biology Society, EMBC 2024

作者： Pan, Feiyu Jia, Tianyu Sun, Jingyao Wang, Annie Yan Ji, Linhong Li, Chong Tsinghua University Department of Mechanical Engineering Beijing China The Hong Kong Polytechnic University Department of Biomedical Engineering Hong Kong Tsinghua University School of Clinical Medicine Tsinghua Medicine Beijing China

ISBN: (纸本)9798350371499

The widespread clinical application of rehabilitation robots is an inevitable trend. Nonetheless, the absence of affective interactions in robot-based training could significantly limit rehabilitation robots' clinical effects. While a favorable patient-clinician relationship during rehabilitation training may promote positive affectivity and result in improved clinical outcomes, the mechanisms underlying this phenomenon remain unclear. In this study, a motor learning experiment was designed to prospectively investigate the impact of interpersonal interactions on training outcomes. Ten pairs of friends engaged in a left-hand drawing task across two training sessions: one led by a close partner and the other by a robot. Pairs of participants' EEG was recorded during training sessions via hyperscaning and task performance was evaluated before and after the training. Results revealed significant motor learning progress and enhanced brain activation in the central, parieto-occipital, and frontal cortex, along with strengthened interbrain coupling in partner-led training compared with robot-based training. These findings suggest that partner-assisted training fosters stronger motivation, attention, and positive emotions, contributing to superior outcomes. This study may provide theoretical and technical support for the design of human-machine affective interaction in rehabilitation robots. © 2024 IEEE.

关键词： Electroencephalography

来源：评论

学校读者我要写书评

暂无评论

Amorphous Iridium Oxide-Integrated Anode Electrodes with Ultrahigh Material Utilization for Hydrogen Production at Industrial Current Densities

引用

Nano-Micro Letters 2024年第10期16卷 225-239页

作者： Lei Ding Kui Li Weitian Wang Zhiqiang Xie Shule Yu Haoran Yu David ACullen Alex Keane Kathy Ayers Christopher BCapuano Fangyuan Liu Pu-Xian Gao Feng-Yuan Zhang Department of Mechanical Aerospace and Biomedical EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Oak Ridge National Lab Center for Nanophase Materials SciencesOak RidgeTN 37831USA Nel Hydrogen WallingfordCT 06492USA Institute of Materials Science University of ConnecticutStorrsCT 06269USA Department of Materials Science and Engineering University of ConnecticutStorrsCT 06269USA

Herein,ionomer-free amorphous iridium oxide(IrO_(x))thin electrodes are first developed as highly active anodes for proton exchange membrane electrolyzer cells(PEMECs)via low-cost,environmentally friendly,and easily scalable electrodeposition at room *** with a Nafion 117 membrane,the IrO_(x)-integrated electrode with an ultralow loading of 0.075 mg cm^(-2)delivers a high cell efficiency of about 90%,achieving more than 96%catalyst savings and 42-fold higher catalyst utilization compared to commercial catalyst-coated membrane(2 mg cm^(-2)).Additionally,the IrO_(x)electrode demonstrates superior performance,higher catalyst utilization and significantly simplified fabrication with easy scalability compared with the most previously reported ***,the remarkable performance could be mainly due to the amorphous phase property,sufficient Ir^(3+)content,and rich surface hydroxide groups in ***,due to the high activity,high cell efficiency,an economical,greatly simplified and easily scalable fabrication process,and ultrahigh material utilization,the IrO_(x)electrode shows great potential to be applied in industry and accelerates the commercialization of PEMECs and renewable energy evolution.

关键词： Ionomer-free Amorphous IrOx electrodes Ultrahigh material utilization Scalable electrodeposition Hydrogen production

来源：评论

学校读者我要写书评

暂无评论

Characterization of Fluoride-added Hydroxyapatite Derived from Eggshells for Dental Application 15

Characterization of Fluoride-added Hydroxyapatite Derived fr...

引用

15th biomedical engineering International Conference, BMEiCON 2023

作者： Uthayaphamornwat, Vilasinee Khantachawana, Anak Kitiwan, Mettaya Srirussamee, Kasama Tunthawiroon, Phacharaphon School of Engineering Department of Biomedical Engineering Bangkok10520 Thailand Faculty of Engineering Department of Mechanical Engineering Bangkok10140 Thailand Biological Engineering Program Faculty of Engineering Bangkok10140 Thailand School of Science Department of Physics Bangkok10520 Thailand Devices and Systems for Energy and Environment Research Unit School of Science Bangkok10520 Thailand School of Engineering Department of Industrial Engineering Bangkok10520 Thailand

ISBN: (纸本)9798350345247

Hydroxyapatite (HA) is one of the potential biomaterials used for treating dental defects. It can be incorporated with fluoride to enhance its anti-caries properties, though other properties could be dependent on processing technique. Hence, this study aims to characterize the influence of sintering on the properties of fluoride-added HA derived from eggshells. FTIR and XRD techniques are used to characterize the chemical and crystal structures of the samples, whilst dissolution test is carried out to characterize material degradation in the acidic environment. The results show that sintering increased the crystallinity in both HA and fluoride-add HA (F-HA) samples, which corresponds with the enhanced stability during the dissolution test. Moreover, it is also found that the addition of fluoride could further stabilize the material structure, though the impurities found in all the samples still need to be minimized. These findings suggest that sintering and fluoride addition could potentially enhance anti-caries properties of eggshell-derived HA, which could be beneficial for dental application in future subject to further process optimization and analysis. © 2023 IEEE.

关键词： Hydroxyapatite

来源：评论

学校读者我要写书评

暂无评论

Analysis of the Reduction of Vibration and Chatter Effect in Boring Process Due to the Addition of Spring Radial Vibration Damper (SRVD) on the Workpiece 5th

Analysis of the Reduction of Vibration and Chatter Effect in...

引用

5th International Conference on mechanical engineering, ICOME 2021

作者： Hendrowati, Wiwiek Iswanda, Mumtaza Rizky Laboratory of Vibration Engineering and Automotive System Department of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia Graduate Program of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia

ISBN: (纸本)9789811908668

Modern machining processes have been rapidly evolving into much more sophisticated forms. However, even with such sophistication in hand, the effect of chatter remains to be a significant problem. To date, engineers keep referring to the traditional chatter stability lobe to address the problem of limiting themselves in creativity to achieve high efficiency. The research aims to observe the vibration reduction along the boring process achieved by adding one type of DVA called Spring Radial Vibration Damper (SRVD) onto the workpiece. The workpiece is a cylindrical rod with the ratio of overhang length to a diameter at 6:1. The experiment conducted in different depths of cut (DoC) varies at 0.25 mm, 0.2 mm, and 0.15 mm. The experiment results show a comparison between the main system and without the SRVD in a graphical representation of the dynamic response, percentage of RMS reduction in each parameter, and surface finish of each parameter. This paper concludes that SRVD can be beneficial for the cutting process within the unstable area of the chatter stability lobe. It will worsen the cutting process if the parameters still lie within the stable area. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Vibration analysis

来源：评论

学校读者我要写书评

暂无评论

Killing two birds with one stone:Enhancing the photoelectrochemical water splitting activity and stability of BiVO_(4)by Fe ions association

引用

Chinese Chemical Letters 2024年第12期35卷 154-159页

作者： Hailang Deng Abebe Reda Woldu Abdul Qayum Zanling Huang Weiwei Zhu Xiang Peng Paul K.Chu Liangsheng Hu Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou515063China Department of Mechanical Engineering Shantou UniversityGuangdong 515063China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515063China Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongHong KongChina Shantou Huaxing Metallurgical Equipment Co. Ltd.Shantou 515063China

Bi VO_(4)is a promising semiconducting photoanode for photoelectrochemical(PEC)water splitting due to its suitable ***,the dissolution of V^(5+)and sluggish reaction kinetics at the surface in the oxygen evolution reaction(OER)limit its ***,we report a convenient strategy to change the microenvironment by adding Fe(Ⅲ)into the *** the PEC process,Fe(Ⅲ)ions not only improve the current density,but also show excellent stability toward Bi VO_(4).Consequently,the current increases by more than 1.7 times compared to that without Fe(Ⅲ).Photoelectrochemical,morphological,and structural characterizations reveal that the FeOOH co-catalyst produced in situ on the Bi VO_(4)photoanode by cyclical formation of the intermediates at the electrode/electrolyte interface during OER accelerates the OER kinetics and prevents photo-corrosion by suppressing the dissolution of V^(5+).The results reveal a new strategy for the multifunctional modification of photoanodes for efficient solar conversion.

关键词： Photoelectrochemical water splitting Bi VO_(4)photoanodes Fe(Ⅲ)ions Oxygen evolution reaction Dynamic changes

来源：评论

学校读者我要写书评

暂无评论

Overcoming Cytosolic Delivery Barriers of Proteins Using Denatured Protein-Conjugated Mesoporous Silica Nanoparticles

引用

ACS Applied Materials and Interfaces 2023年第1期15卷 432-451页

作者： Dembélé, Julien Liao, Jou-Hsuan Liu, Tsang-Pai Chen, Yi-Ping Graduate Institute of Biomedical Materials & Tissue Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Laboratory of Toxicology Environment and Health Doctorate School of Health University Joseph Ki-Zerbo Ouaga03 BP 7021 Burkina Faso Department of Chemistry National Taiwan University Taipei10617 Taiwan Department of Surgery Mackay Memorial Hospital Taipei10449 Taiwan Graduate Institute of Nanomedicine and Medical Engineering Taipei Medical University Taipei11031 Taiwan International PhD Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan

Intracellular delivery of therapeutic proteins has increased advantages over current small-molecule drugs and gene therapies, especially in therapeutic efficacies for a broad spectrum of diseases. Hence, developing the protein therapeutics approach provides a needed alternative. Here, we designed a mesoporous silica nanoparticle (MSN)-mediated protein delivery approach and demonstrated effective intracellular delivery of the denatured superoxide dismutase (SOD) protein, overcoming the delivery challenges and achieving higher enzymatic activity than native SOD-conjugated MSNs. The denatured SOD-conjugated MSN delivery strategy provides benefits of reduced size and steric hindrance, increased protein flexibility without distorting its secondary structure, exposure of the cell-penetrating peptide transactivator of transcription for enhanced efficient delivery, and a change in the corona protein composition, enabling cytosolic delivery. After delivery, SOD displayed a specific activity around threefold higher than in our previous reports. Furthermore, the in vivo biosafety and therapeutic potential for neuron therapy were evaluated, demonstrating the biocompatibility and the effective antioxidant effect in Neuro-2a cells that protected neurite outgrowth from paraquat-induced reactive oxygen species attack. This study offers an opportunity to realize the druggable possibility of cytosolic proteins using MSNs. © 2022 American Chemical Society.

关键词： Peptides

来源：评论

学校读者我要写书评

暂无评论

APPROPRIATE MODE OF STORAGE OF PORCINE HEART MYOCARDIA WITHOUT TEMPERING WITH ITS PASSIVE mechanical PROPERTIES 13

APPROPRIATE MODE OF STORAGE OF PORCINE HEART MYOCARDIA WITHO...

引用

13th South African Conference on Computational and Applied Mechanics, SACAM 2024

作者： Mabuda, I. Pandelani, T. Ngwangwa, H. Nemavhola, F. Unisa Biomedical Engineering Research Group Department of Mechanical Engineering School of Engineering College of Science Engineering and Technology University of South Africa Science Campus FL 1710 South Africa Faculty of Engineering and the Built Environment Durban University of Technology Durban South Africa

ISBN: (纸本)9780797219144

One of the important aspects of mechanics of soft tissues is perseveration during and before mechanical testing. This study addresses the critical aspect of preserving soft tissue integrity for mechanical testing, particularly focusing on the myocardium of the porcine heart. The primary objective of the study was to assess the impact of different preservation methods on the mechanical properties of this tissue. A series of experiments were conducted. Porcine heart myocardium was subjected to tensile testing using a uniaxial machine as a means of evaluating the traditional preservation methods employed in the field. To simulate real-world scenarios, harvested myocardium samples were initially preserved by immersion in either fresh water or a NaCl solution. These samples were then stored under varying temperature conditions, including freezing at -2°C, -10°C, and -20°C, or refrigeration at 2°C-3°C. The preserved myocardium underwent a thawing process before undergoing mechanical testing. The study specifically focused on the right ventricle of the porcine heart, known for its significant role in cardiac function. Notably, frozen right ventricular myocardium exhibited a slight increase in tensile strength, particularly in the circumferential direction, when compared to fresh tissue. Overall, this research sheds light on the potential impact of preservation methods and storage temperatures on myocardial mechanical properties, emphasizing the importance of considering these factors in biomechanical studies of cardiac tissues. Copyright 2024 by South African Association of Theoretical and Applied Mechanics. All rights reserved.

关键词： Tensile strength

来源：评论

学校读者我要写书评

暂无评论

Enhanced Pool Boiling Heat Transfer with Porous Ti-6Al-4V-Coatings Produced by Cold Spray Metal Additive Manufacturing 9

Enhanced Pool Boiling Heat Transfer with Porous Ti-6Al-4V-Co...

引用

9th European Thermal Sciences Conference, EUROTHERM 2024

作者： Garivalis, Alekos Ioannis Chen, Yan Shatskiy, Evgeny Robinson, Anthony Marco, Paolo Di Lupoi, Rocco Department of Energy Systems Territory and Constructions Engineering University of Pisa Largo Lucio Lazzarino 1 Pisa56122 Italy Department of Mechanical Manufacturing and Biomedical Engineering Trinity College University of Dublin Ireland

In advancing industrial heat transfer mechanisms, surface coatings offer significant potential. This research elucidates the efficacy of the metal additive manufacturing Cold Spray deposition technique for producing enhanced boiling surfaces, specifically focusing on Ti-6Al-4V (Ti64) coatings on Aluminium substrates. This offers a rapid and low-cost fabrication method for producing lightweight enhanced boiling surfaces. The Cold Spray method is typically used to create dense metal deposits. Here, the process has been specially tuned to create highly inhomogeneous honeycomb-type porous Ti64 coatings. Critical Cold Spray deposition parameters, such as particle velocity, preheat temperature, and deposition rate have been identified to create repeatable porous coatings, with thicknesses of up to 3.0 mm achievable. Following deposition, several samples were subjected to systematic boiling heat transfer tests in a purpose-built pool boiling apparatus. Boiling curves were generated for the augmented Cold Spray surfaces as well as a bare surface, with the latter acting as a baseline to which enhancement levels were assessed. Initial data analysis shows that some of the tested surfaces exhibit a notable increase in boiling heat transfer coefficient and Critical Heat Flux (CHF). This enhancement is potentially attributed to increased surface area, increased nucleation site density, capillary wicking, and mitigation of lateral bubble coalescence, though excessive coating thickness may degrade heat transfer. In summary, the novel Ti64 surface structures developed using the Cold Spray deposition technique exhibits high potential for industries necessitating superior boiling heat transfer performance. Importantly, the manufacturing process is industrially scalable, offering the capacity to rapidly coat large areas at low cost compared with subtractive manufacturing other metal additive manufacturing methods. © Published under licence by IOP Publishing Ltd.

关键词： Aluminum alloys

来源：评论

学校读者我要写书评

暂无评论

WE43 Surface Composite with Oxide Particles by Friction Stir Processing

WE43 Surface Composite with Oxide Particles by Friction Stir...

引用

Magnesium Technology Symposium, 2025, held as part of the TMS Annual Meeting and Exhibition, TMS 2025

作者： Ghauri, Hamza Faisal Shunmugasamy, Vasanth C. Mansoor, Bilal Department of Materials Science and Engineering Texas A&M University College StationTX77840 United States Mechanical Engineering Program Texas A&M University at Qatar Doha Qatar Department of Mechanical Engineering Texas A&M University College StationTX77840 United States

ISBN: (纸本)9783031810602

WE43WE43 has superior mechanical and corrosionCorrosion performance compared to other magnesium alloysMagnesium alloy but surface treatments, mechanical processes, and heat treatments to further enhance its properties continue to be explored. Here we present our preliminary findings about a WE43WE43surface compositeSurface composite with oxide particles produced using friction stir processingFriction stir processing. Significant grain refinement, precipitate redistribution, and increase in microhardness by 25% were achieved in processed regions compared to base material. CorrosionCorrosion testing in 0.9% NaCl solution revealed that the FSP-treated material exhibited a 196% lower Icorr and a more stable open circuit potential (OCP) than cast WE43WE43, suggesting superior corrosion resistanceCorrosion resistance. While the findings promise suitability of the processed alloy for a more intensive range of operating conditions than the cast alloy, further work to study the effect of the size, volume, and composition of the oxide reinforcements needs to be carried out. © The Minerals, Metals & Materials Society 2025.

关键词： Grain refinement

来源：评论

学校读者我要写书评

暂无评论

Highly Flexible and Sensitive Proximity Sensor Based on Liquid Metal Microfluidic Fibers

Highly Flexible and Sensitive Proximity Sensor Based on Liqu...

引用

2024 IEEE International Conference on Robotics and Biomimetics, ROBIO 2024

作者： Chen, Aobo Lu, Sitong 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 15 Kent Ridge Cres Singapore119276 Singapore School of Mechanical Engineering and Automation Beihang University Beijing100191 China

ISBN: (纸本)9781665481090

In recent years, the study of proximity sensors has garnered significant attention, and the introduction of flexible proximity sensors is expected to markedly enhance the naturalness of human-machine interaction and user experience. This paper presents the design and performance analysis of a highly flexible capacitive proximity sensor. The sensor employs highly flexible liquid metal microfluidic fibers to construct a double-helix structure, significantly enhancing its sensitivity (0.062pF/mm, d200 times). Finally, the application prospects of the sensor in intelligent control systems are validated through robotic arm control experiments. © 2024 IEEE.

关键词： Silicones

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：