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Extracting terms from clinical records of traditional Chinese medicine

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Frontiers of Medicine 2014年第3期8卷 347-351页

作者： Cungen Cao meng sun Shi Wang Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China Software College of Beihang University Beijing100191 China

Health records of traditional Chinese medicine contain valuable clinical inlormation which can be used for improvement of disease treatment and for medical research. In this paper, we present a practical iterative extraction method for extracting terms from the records. The method is based on a set of extraction rules, the Mesh, and the likelihood ratio technique, and achieved a precision rate of 88.18% and a recall rate of 94.21%.

关键词： term extraction rule-based likelihood ratio

Stimuli-Responsive Polypeptide-Based Supramolecular Hydrogels Mediated by Ca^2+ Ion Cross-Linking

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Chinese Journal of Chemistry 2019年第11期37卷 1137-1141页

作者： Fandong meng Jing sun Zhibo Li Key Laboratory of Biobased Polymer Materials Shandong Provincial Education DepartmentSchool of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042China

Background and Originality Content Hydrogels,which retain a large amount of water,possess tunable porous three-dimensional *** are known to resemble human tissue that can offer many advantages in biomedical applications such as tissue engineering,drug delivery and surgical dressings.1141 Stimuli-responsive hydrogels,referred as smart hydrogels can rapidly respond in a controlled manner to external stimuli,such as temperature,pH,light,etc.[s]In particular,the thermal-responsive hydrogels exhibit sol-to-gel phase transition upon heating up to lower critical gelation temperatures(CGTs).

关键词： Hydrogel critical porous

Effect of nitrogen introduction methods on the microstructure and properties of gradient cemented carbides

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International Journal of Minerals,Metallurgy and Materials 2011年第6期18卷 709-716页

作者： Tian-en Yang Ji Xiong Lan sun Zhi-xing Guo Ding Cao School of Manufacturing Science and engineering Sichuan University Chengdu 610065 China

Gradient cemented carbides with the surface depleted in cubic phases were prepared following normal powder metallurgical *** zone formation and the influence of nitrogen introduction methods on the microstructure and performance of the alloys were *** results show that the simple one-step vacuum sintering technique is doable for producing gradient cemented *** structure formation is attributed to the gradient in nitrogen activity during sintering,but is independent from nitrogen introduced methods.A uniform carbon distribution is found throughout the ***,the transverse rupture strength of the cemented carbides can be increased by a gradient *** nitrogen carriers give the alloys distinguishing microstructure and mechanical properties,and a gradient alloy with ultrafine-TiC0.5N0.5 is found optimal.

关键词： gradient cemented carbide gradient methods nitrogen microstructure mechanical properties sintering

Generation process of FeS and its inhibition mechanism on iron mineral reduction in selective direct reduction of laterite nickel ore

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International Journal of Minerals,Metallurgy and Materials 2015年第9期22卷 901-906页

作者： Zhi-guo Liu Ti-chang sun Xiao-ping Wang en-xia Gao School of Civil and environmental engineering University of Science and Technology Beijing

Numerous studies have demonstrated that Na2SO4 can significantly inhibit the reduction of iron oxide in the selective reduction process of laterite nickel ore. FeS generated in the process plays an important role in selective reduction, but the generation process of FeS and its inhibition mechanism on iron reduction are not clear. To figure this out, X-ray diffraction and scanning electron microscopy analyses were conducted to study the roasted ore. The results show that when Na2SO4 is added in the roasting, the FeO content in the roasted ore increases accompanied by the emergence of FeS phase. Further analysis indicates that NaeS formed by the reaction of Na2SO4 with CO reacts with SiO2 at the FeO surface to generate FeS and Na2Si2Os. As a result, a thin film forms on the surface of FeO, hindering the contact between reducing gas and FeO. Therefore, the reduction of iron is depressed, and the FeO content in the roasted ore increases.

关键词： laterite nickel ore direct reduction sodium sulfate iron sulfide

Embryogenesis,a process of pattern formation

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Frontiers in Biology 2011年第1期6卷 1-2页

作者： meng-Xiang sun Key Laboratory of Ministry of Education for Plant Developmental Biology College of Life SciencesWuhan UniversityWuhan 430072China

Plant embryogenesis is traditionally defined as a developmental process from zygote to mature embryo,which has the potential to form a complete plant(Bhojwani,1974;Hu,2005).In dicotyledonous species,the fertilized egg or zygote usually divides according to a stereotyped pattern and gives rise to an embryo that consists of an embryonic shoot,cotyledons,hypocotyls,and an embryonic ***,the basic body plan of the plant is established during the ***,the shoot-leaf-stem structure,not including the root,is repeatedly photocopied as a basic unit throughout plant vegetative growth(Wolpert et al.,2002).In this case,embryogenesis is a seemingly endless process and the epitome of plant ***,recent studies on the molecular mechanism of embryogenesis revealed that the basic plant body plan is laid down as the establishment of the radial and apical-basal *** this process,both the radial concentric tissue layers and the apicalbasal sections of the plant body are generated,especially the root and shoot stem cell pools,which are essential for postembryonic growth(De Smet and Jürgens,2007;De Smet et al.,2010).All further development and morphogenesis are governed or guided by this basic ***,embryogenesis is,in fact,a process of pattern formation.

关键词： pattern process traditionally

The Feasibility of Constraining Dark energy Using LAMOST Redshift Survey

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Chinese Journal of Astronomy and Astrophysics 2006年第2期6卷 155-164页

作者： Lei sun meng Su Zu-Hui Fan Department of Astronomy Peking University Beijing 100871

We consider using future redshift surveys with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope （LAMOST） to constrain the equation of state of dark energy w. We analyze the Alcock ＆ Paczynski （AP） effect imprinted on the two-point correlation function of galaxies in redshift space. The Fisher matrix analysis is applied to estimate the expected error bounds of w0 and wα from galaxy redshift surveys, w0 and wα being the two parameters in the equation of state parametrization w（z） = w0 ＋ wαz/（1 ＋ z）. Strong degeneracies between w0 and wα are found. The direction of the degeneracy in w0 - wα plane, however, rotates counter-clockwise as the redshift increases. LAMOST can potentially contribute in the redshift range up to 0.5. In combination with other high redshift surveys, such as the proposed Kilo-Aperture Optical Spectrograph project （KAOS）, the joint constraint derived from galaxy surveys at different redshift ranges is likely to efficiently break the degeneracy of w0 and wα. We do not anticipate that the nature of dark energy can be well constrained with LAMOST alone, but it may help to reduce the error bounds expected from other observations, such as the Supernova/Acceleration Probe （SNAP）.

关键词： Cosmology: theory - galaxies: distances and redshifts - galaxy clustering - large-scale structure of Universe

New insights into cell-cell communications during seed development in flowering plants

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Journal of Integrative Plant Biology 2022年第2期64卷 215-229页

作者： Wei Wang Hanxian Xiong Kaiting sun Bo Zhang meng-Xiang sun State Key Laboratory of Hybrid Rice College of Life SciencesWuhan UniversityWuhan430072 China

The evolution of seeds is a major reason why flowering plants are a dominant life form on *** developing seed is composed of two fertilization products,the embryo and endosperm,which are surrounded by a maternally derived seed *** evidence indicates that efficient communication among all three seed components is required to ensure coordinated seed *** communication within plant seeds has drawn much attention in recent *** this study,we review current knowledge of cross-talk among the endosperm,embryo,and seed coat during seed development,and highlight recent advances in this field.

关键词： cell-cell communication embryo endosperm seed coat

Nonreciprocity of energy transfer in a nonlinear asymmetric oscillator system with various vibration states

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Applied Mathematics and Mechanics(english Edition) 2023年第5期44卷 727-744页

作者： Jian’en CHen Jianling LI Minghui YAO Jun LIU Jianhua ZHANG Min sun Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical EngineeringTianjin University of TechnologyTianjin 300384China National Demonstration Center for Experimental Mechanical and Electrical engineering Education Tianjin University of TechnologyTianjin 300384China School of Aeronautics and Astronautics Tiangong UniversityTianjin 300387China Agricultural Information Institute of Chinese Academy of Agricultural Sciences Key Laboratory of Agricultural Big DataMinistry of Agriculture and Rural AffairsBeijing 100081China School of Science Tianjin Chengjian UniversityTianjin 300384China

The nonreciprocity of energy transfer is constructed in a nonlinear asymmetric oscillator system that comprises two nonlinear oscillators with different parameters placed between two identical linear *** slow-flow equation of the system is derived by the complexification-averaging *** semi-analytical solutions to this equation are obtained by the least squares method,which are compared with the numerical solutions obtained by the Runge-Kutta *** distribution of the average energy in the system is studied under periodic and chaotic vibration states,and the energy transfer along two opposite directions is *** effect of the excitation amplitude on the nonreciprocity of the system producing the periodic responses is analyzed,where a three-stage energy transfer phenomenon is *** the first stage,the energy transfer along the two opposite directions is approximately equal,whereas in the second stage,the asymmetric energy transfer is *** energy transfer is also asymmetric in the third stage,but the direction is reversed compared with the second ***,the excitation amplitude for exciting the bifurcation also shows an asymmetric *** vibrations are generated around the resonant frequency,irrespective of which linear oscillator is *** excitation threshold of these chaotic vibrations is dependent on the linear oscillator that is being *** addition,the difference between the energy transfer in the two opposite directions is used to further analyze the nonreciprocity in the *** results show that the nonreciprocity significantly depends on the excitation frequency and the excitation amplitude.

关键词： nonreciprocity strong nonlinearity energy transfer chaotic vibration higher branch of response

Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan sun Shuai Wang Yanbo Liang Chao Wang Yunhong Zhang Hong Liu Yu Zhang Lin Han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor