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MoS_(2) nanoflowers and PEDOT:PSS nanocomposite enabling wearable dual-mode pressure sensors

Science China(Technological Sciences) 2024年第6期67卷 1737-1747页

作者： WANG FengMing YANG WeiJia MA Ke SHEN GengZhe SU DaoJian LI BaiJun WANG ShuangPeng QIN BoLong ZHANG Chi XIN Yue CAO XiaoBing HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen529020China Biomaterials R&D Center Zhuhai Institute of Advanced TechnologyChinese Academy of SciencesZhuhai519003China joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao999078China

A versatile sensing platform employing inorganic MoS_(2) nanoflowers and organic poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)has been investigated to develop the resistive and capacitive force-sensitive *** microstructure of the sensing layer heightens the sensitivity and response time of the dual-mode pressure sensors by augmenting electron pathways and inner stress in response to mechanical ***,the capacitive and resistive sensors exhibit sensitivities of 0.37 and 0.12 kPa^(-1),respectively,while demonstrating a remarkable response time of approximately 100 ***,it is noteworthy that the PEDOT:PSS layer exhibits excellent adhesion to polydimethylsiloxane(PDMS)substrates,which contributes to the development of highly robust force-sensitive sensors capable of enduring more than 10000loading/unloading *** combination of MoS_(2)/PEDOT:PSS layers in these dual-mode sensors has shown promising results in detecting human joint movements and subtle physiological ***,the sensors have achieved a remarkable precision rate of 98%in identifying target *** outcomes underscore the significant potential of these sensors for integration into applications such as electronic skin and human-machine interaction.

关键词： MoS_(2)/PEDOT:PSS nanocomposite force-sensitive sensor multi-scaled microstructure physiological signals monitoring object grasping recognition

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Medical Named Entity Recognition from Un-labelled Medical Records based on Pre-trained Language Models and Domain Dictionary

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Data Intelligence 2021年第3期3卷 402-417页

作者： Chaojie Wen Tao Chen Xudong Jia Jiang Zhu Faculty of Intelligent Manufacturing Wuyi UniversityJiangmen 529020China

Medical named entity recognition(NER)is an area in which medical named entities are recognized from medical texts,such as diseases,drugs,surgery reports,anatomical parts,and examination *** medical NER methods do not make full use of un-labelled medical texts embedded in medical *** address this issue,we proposed a medical NER approach based on pre-trained language models and a domain ***,we constructed a medical entity dictionary by extracting medical entities from labelled medical texts and collecting medical entities from other resources,such as the YiduN4 K data ***,we employed this dictionary to train domain-specific pre-trained language models using un-labelled medical ***,we employed a pseudo labelling mechanism in un-labelled medical texts to automatically annotate texts and create pseudo ***,the BiLSTM-CRF sequence tagging model was used to fine-tune the pre-trained language *** experiments on the un-labelled medical texts,which were extracted from Chinese electronic medical records,show that the proposed NER approach enables the strict and relaxed F1 scores to be 88.7%and 95.3%,respectively.

关键词： Medical named entity recognition Pre-trained language model Domain dictionary Pseudo labelling Un-labelled medical data

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Aerodynamic Features of High-Speed Maglev Trains with Different Marshaling Lengths Running on a Viaduct under Crosswinds

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 975-996页

作者： Zun-Di Huang Zhen-Bin Zhou Ning Chang Zheng-Wei Chen Su-Mei Wang School of Rail Transportation Wuyi UniversityJiangmen529020China National Rail Transit Electrification and Automation Engineering Technology research Center(hong kong Branch) The Hong Kong Polytechnic UniversityHong Kong999077China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong999077China

The safety and stability of high-speed maglev trains traveling on viaducts in crosswinds critically depend on their aerodynamic ***,this paper uses an improved delayed detached eddy simulation(IDDES)method to investigate the aerodynamic features of high-speed maglev trains with different marshaling lengths under *** effects of marshaling lengths(varying from 3-car to 8-car groups)on the train’s aerodynamic performance,surface pressure,and the flow field surrounding the train were investigated using the three-dimensional unsteady compressible Navier-Stokes(N-S)*** results showed that the marshaling lengths had minimal influence on the aerodynamic performance of the head and middle ***,the marshaling lengths are negatively correlated with the time-average side force coefficient(CS)and time-average lift force coefficient(Cl)of the tail *** to the tail car of the 3-car groups,the CS and Cl fell by 27.77%and 18.29%,respectively,for the tail car of the 8-car *** is essential to pay more attention to the operational safety of the head car,as it exhibits the highest time average ***,the mean pressure difference between the two sides of the tail car body increased with the marshaling lengths,and the side force direction on the tail car was opposite to that of the head and middle ***,the turbulent kinetic energy of the wake structure on the windward side quickly decreased as marshaling lengths increased.

关键词： High-speed maglev train marshaling lengths crosswinds aerodynamic features

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Multi-element analysis by ArF laser excited atomic fluorescence of laser ablated plumes： Mechanism and applications

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Frontiers of physics 2012年第6期7卷 670-678页

作者： Yue Cai Po-Chun Chu Sut Kam Ho Nai-Ho Cheung Department of Physics Hong Kong Baptist University Kowloon Tong Hong Kong China Faculty of Science and Technology University of Macao Macao China

A new multi-element analysis technique based on laser-excited atomic fluorescence was reviewed. However, the one-wavelength-one-transition constraint was overcome. Numerous elements were induced to fluoresce at a single excitation wavelength of 193 nm. This was possible provided that the analytes were imbedded in dense plumes, such as those produced by pulsed laser ablation. The underlying mechanism of the technique was explained and corroborated. Analytical applications to metals, plastics, ceramics and their composites were discribed. Detection limits in the ng/g range and mass limits of atto moles were demonstrated. Several real-world problems, including the analysis of paint coating for trace lead, the non-destructive analysis of potteries and ink, the chemical profiling of electrode plastic interfaces, and the analysis of ingestible lead colloids were discussed.

关键词： laser-excited atomic fluorescence (LEAF) argon fluoride laser laser plume spectroscopy multi-element analysis

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Carbonization fabrication of a piezoresistive sensor with improved sensitivity via Ni decoration of carbonized cotton fibers

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Science China(Technological Sciences) 2022年第12期65卷 3000-3009页

作者： HE Xiang WANG FengMing LIANG YiYing WU JiaWei LIANG Jionghong SHEN GengZhe LI BaiJun SU DaoJian ZHANG Chi SONG WeiDong HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

The development of wearable electronics urgently requires the cost-effective and scalable fabrication of high-performance pressure *** work aims to develop a simple carbonization strategy to facilitate sensor sensitivity by decorating discrete nickel nanoparticles on carbonized cotton fibers(CCFs).The increased air gap between the fibers at the unloading state,as well as the enlargement of the deformation distance and the contact area between the conductive materials at the loading state,contribute to a more significant resistance ***,the sensitivity of the piezoresistive sensor is improved more than 5 times within 1 N by introducing Ni nanoparticles,and it is characterized by a rapid response(~160 ms)and recovery(~100 ms),wide detection range(~20 N/~130 kPa),and good durability(~4000 cycles).The flexible sensor has been successfully demonstrated to monitor human movements,physical stimuli,and pressure ***,the proposed device can control temperature accurately as a uniform and large-scale *** work reveals that the Ni@CCFs-based sensor is prospective in wearable electronics,artificial intelligence,health monitoring,medical diagnosis and treatment.

关键词： carbonized cotton fabric Ni nanoparticles flexible piezoresistive sensor wearable device

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Exsolution of CoFe(Ru)nanoparticles in Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)for efficient oxygen evolution reaction

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Nano research 2022年第8期15卷 6977-6986页

作者： Yi Liang Yu Cui Yang Chao Ning Han Jaka Sunarso Ping Liang Xin He Chi Zhang Shaomin Liu School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China Department of Materials Engineering KU LeuvenLeuven 3001Belgium research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang TigaKuching 93350SarawakMalaysia College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

The rational modification of perovskite oxides(ABO3−δ)is essential to improve the efficiency and stability of oxygen *** engineering represents a facile approach to modify perovskites for enhanced *** compositional design and in situ exsolution,a Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)(LSCFR)perovskite anchored with CoFe(Ru)alloy particles on the surface was fabricated for oxygen evolution reaction(OER)in this *** results and calculations indicate that Ru-doping promotes the exsolution of CoFe(Ru)from the perovskite *** exsolution in the reduced atmosphere for 3 h,the catalyst(LSCFR-3)exhibited superior OER performance with an overpotential of 347 mV and a Tafel slope of 54.65 mV·dec^(−1),and showed good stability in contrast to the pristine *** exsolution of CoFe(Ru)particles,Ru doping,and the increase of surface oxygen vacancies are responsible for the enhancement of OER *** findings obtained in this study highlight the possibility of controlling exsolution and composition of nanoparticles by element doping and prove that in situ exsolution is an effective strategy for designing OER catalysts.

关键词： perovskite oxides in situ exsolution oxygen evolution reactions CoFe nanoparticles B-site cation doping

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Highly stable capacitive tactile sensors with tunable sensitivity facilitated by electrostatic interaction of layered double hydroxide,MXene,and Ag NWs

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Science China(Technological Sciences) 2023年第11期66卷 3287-3297页

作者： SHEN GengZhe HUANG WeiQing LI HaiFeng WANG FengMing SU DaoJian LI BaiJun ZHANG BoLun LIANG Ping ZHANG Chi XIN Yue HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

A capacitive tactile sensor(CTS)has been developed by assembling a double-sided patterned dielectric layer and novel *** patterned aluminium foil-supported electrode comprises zinc-aluminium layered double hydroxides(Zn AlLDH),MXene,and Ag NWs via electrostatic *** flexible device enables greater structural deformation,thereby enhancing sensitivity to a wide range of *** sensitivity of the CTS can be customized to meet specific requirements by matching the microstructured electrodes with the patterned dielectric *** optimized sensor exhibits a sensitivity of 2.752 kPa^(–1)within 30 kPa,a response time of approximately 100 ms,and a wide detection range of 0–300 *** strong physical interaction among the electrode materials ensures a reliable conductive network,ensuring the long-term stability of the sensor,even after 7500 loading and unloading ***,the fabricated CTS device presents a promising prospect for the integration into wearable electronics,with the ability to effectively respond to both human activities and external physical stimuli.

关键词： capacitive tactile sensor adjustable sensitivity long-term durability human activity monitoring

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Deep learning based radiomics for gastrointestinal cancer diagnosis and treatment:A minireview

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World Journal of Gastroenterology 2022年第45期28卷 6363-6379页

作者： Pak Kin Wong In Neng Chan Hao-Ming Yan Shan Gao Chi hong Wong Tao Yan Liang Yao Ying Hu Zhong-Ren Wang Hon Ho Yu Department of Electromechanical Engineering University of MacaoTaipa 999078MacaoChina School of Clinical Medicine China Medical UniversityShenyang 110013Liaoning ProvinceChina Department of Gastroenterology Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceXiangyang 441021Hubei ProvinceChina Faculty of Medicine Macao University of Science and TechnologyTaipa 999078MacaoChina School of Mechanical Engineering Hubei University of Arts and ScienceXiangyang 441053Hubei ProvinceChina Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518055Guangdong ProvinceChina Department of Gastroenterology Kiang Wu HospitalMacao 999078China

Gastrointestinal(GI)cancers are the major cause of cancer-related mortality *** imaging is an important auxiliary means for the diagnosis,assessment and prognostic prediction of GI *** is an emerging and effective technology to decipher the encoded information within medical images,and traditional machine learning is the most commonly used *** advances in deep learning technology have further promoted the development of *** the field of GI cancer,although there are several surveys on radiomics,there is no specific review on the application of deep-learning-based radiomics(DLR).In this review,a search was conducted on Web of Science,PubMed,and Google Scholar with an emphasis on the application of DLR for GI cancers,including esophageal,gastric,liver,pancreatic,and colorectal ***,the challenges and recommendations based on the findings of the review are comprehensively analyzed to advance DLR.

关键词： Radiomics Deep learning Gastrointestinal cancer Medical imaging

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Scheduling Dual-Arm Multi-Cluster Tools With Regulation of Post-Processing Time

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IEEE/CAA Journal of Automatica Sinica 2023年第8期10卷 1730-1742页

作者： Qinghua Zhu Bin Li Yan Hou hongpeng Li Naiqi Wu IEEE the School of Computer Science and Technology Guangdong University of TechnologyGuangzhou 510006China the Institute of Systems Engineering and Collaborative Laboratory for Intelligent Science and Systems Macao University of Science and TechnologyMacao 999078China

As wafer circuit width shrinks down to less than ten nanometers in recent years,stringent quality control in the wafer manufacturing process is increasingly *** to the coupling of neighboring cluster tools and coordination of multiple robots in a multi-cluster tool,wafer production scheduling becomes rather *** a wafer is processed,due to high-temperature chemical reactions in a chamber,the robot should be controlled to take it out of the processing chamber at the right *** order to ensure the uniformity of integrated circuits on wafers,it is highly desirable to make the differences in wafer post-processing time among the individual tools in a multicluster tool as small as *** achieve this goal,for the first time,this work aims to find an optimal schedule for a dual-arm multi-cluster tool to regulate the wafer post-processing *** do so,we propose polynomial-time algorithms to find an optimal schedule,which can achieve the highest throughput,and minimize the total post-processing time of the processing *** propose a linear program model and another algorithm to balance the differences in the post-processing time between any pair of adjacent cluster *** industrial examples are given to illustrate the application and effectiveness of the proposed method.

关键词： Cluster tool optimization scheduling

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Anti-inflammatory mechanisms of the novel cytokine interleukin-38 in allergic asthma

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Cellular & Molecular Immunology 2020年第6期17卷 631-646页

作者： Xiaoyu Sun Tianheng Hou Edwin Cheung Tiffany Nga-Teng Iu Victor Wai-Hou Tam Ida Miu-Ting Chu Miranda Sin-Man Tsang Paul Kay-Sheung Chan Christopher Wai-Kei Lam Chun-Kwok Wong Department of Chemical Pathology The Chinese University of Hong KongHong KongChina Cancer Centre/Centre of Precision Medicine research and Training Faculty of Health SciencesUniversity of MacaoMacaoChina Institute of Chinese Medicine and State Key Laboratory of research on Bioactivities and Clinical Applications of Medicinal Plants The Chinese University of Hong KongHong KongChina Department of Microbiology The Chinese University of Hong KongHong KongChina Faculty of Medicine and State Key Laboratory of Quality research in Chinese Medicines Macao University of Science and TechnologyMacaoChina Li Dak Sum Yip Yio Chin R&D Centre for Chinese Medicine The Chinese University of Hong KongHong KongChina

We elucidated the anti-inflammatory mechanisms of IL-38 in allergic *** bronchial epithelial cells and eosinophils were cocultured upon stimulation with the viral RLR ligand poly(I:C)/LyoVec or infection-related cytokine TNF-αto induce expression of cytokines/chemokines/adhesion *** dust mite(HDM)-induced allergic asthma and humanized allergic asthma NOD/SCID murine models were established to assess anti-inflammatory mechanisms in ***-38 significantly inhibited induced proinflammatory IL-6,IL-1β,CCL5,and CXCL10 production,and antiviral interferon-βand intercellular adhesion molecule-1 expression in the coculture *** cytometry and RNA-sequencing analysis revealed that IL-38 could antagonize the activation of the intracellular STAT1,STAT3,p38 MAPK,ERK1/2,and NF-κB pathways,and upregulate the expression of the host defense-related gene POU2AF1 and anti-allergic response gene *** injection of IL-38 into HDM-induced allergic asthma mice could ameliorate airway hyperreactivity by decreasing the accumulation of eosinophils in the lungs and inhibiting the expression of the Th2-related cytokines IL-4,IL-5,and IL-13 in the bronchoalveolar lavage fluid(BALF)and lung *** examination indicated lung inflammation was alleviated by reductions in cell infiltration and goblet cell hyperplasia,together with reduced Th2,Th17,and innate lymphoid type 2 cell numbers but increased proportions of regulatory T cells in the lungs,spleen,and lymph ***-38 administration suppressed airway hyperreactivity and asthma-related IL-4 and IL-5 expression in humanized mice,together with significantly decreased CCR3^(+) eosinophil numbers in the BALF and lungs,and a reduced percentage of human CD4^(+)CRTH2^(+)Th2 cells in the lungs and mediastinal lymph ***,our results demonstrated the anti-inflammatory mechanisms of IL-38 and provided a basis for the development of a regulatory cytokine-based treatment for allergic

关键词： allergic asthma eosinophils IL-38 ILC2s Tregs

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