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Dermoscopy of perforating lichen nitidus:a case report

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Chinese Medical Journal 2020年第17期133卷 2135-2136页

作者： Xiang-Qian Li Xi Chen Bo Li Juan Du you-Shu Hong Jian-zhong Zhang Cheng Zhou Department of Dermatology Peking University People’s HospitalBeijing 100044China Baoding Huaren Skin Disease Hospital BaodingHebei 071000China

To the Editor:Perforating dermatoses is a group of diseases characterized by papulonodular rashes with the elimination of endogenous or exogenous materials through the *** primary perforating disorders include reactive perforating collagenosis,elastosis perforans serpiginosa,Kyrle disease,perforating folliculitis,and acquired perforating *** perforating phenomenon could also be secondary to some other skin disorders,such as calcinosis cutis,granuloma annulare,chromoblastomycosis,lichen planus,lichen striatus,and rarely,lichen ***,we report a case of extensive perforating lichen nitidus in a Chinese patient.

关键词： nit annular elimination

How Machine Learning Accelerates the Development of Quantum Dots?

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Chinese Journal of Chemistry 2021年第1期39卷 181-188页

作者： Jia Peng Ramzan Muhammad Shu-Liang Wang Hai-Zheng zhong MIIT Key laborotory for Low-Dimensional Quantum Structure and Devices School of Materials Sciences&EngineeringBeiing Institute of Technology100081 BeijingChina School of Computer Science&Technology Beijing Institute of TechnologyBeijing 100081China

With the rapid developments in the field of information technology,the material research society is looking for an alternate scientific route to the traditional methods of trial and error in material research and process *** learning emerges as a new research paradigm to accel-erate the application-oriented material *** dots are ex-panded as functional nanomaterials to enhance cutting-edge photonic ***,they suffer from uncertainty in industrial fabrication and ***,we discuss how machine learning accelerates the development of quantum *** basic principles and operation proce-dures of machine learning are described with a few representative examples of quantum *** emphasize how machine learning contributes to the optimization of synthesis and the analysis of material *** conclude,we give a short perspective discussing the problems of combining machine learning and quantum dots.

关键词： Quantum dots Machine learning Materials genome initiative Neural networks On-demand

DEM-CFD simulation of modular PB-FHR core with two-grid method

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Nuclear Science and Techniques 2017年第7期28卷 115-126页

作者： Feng-Rui Liu Xing-Wei Chen zhong Li Na-Xiu Wang Shanghai Institute of Applied Physics Chinese Academy of Sciences Jiadig Campus Shanghai 201800 China University of Chinese Academy of Sciences Beijing 100049China

For designing and optimizing the reactor core of modular pebble-bed fluoride salt-cooled high-temperature reactor(PB-FHR),it is of importance to simulate the coupled fluid and particle flow due to strong coolantpebble *** fluid dynamics and discrete element method(DEM) coupling approach can be used to track particles individually while it requires a fluid cell being greater than the pebble ***,the large size of pebbles makes the fluid grid too coarse to capture the complicated flow *** solve this problem,a two-grid approach is proposed to calculate interphase momentum transfer between pebbles and coolant without the constraint on the shape and size of fluid *** solid velocity,fluid velocity,fluid pressure and void fraction are mapped between hexahedral coarse particle grid and tine fluid *** the total interphase force can be calculated independently to speed up *** evaluate suitability of this two-grid approach,the pressure drop and minimum fluidization velocity of a fluidized bed were predicted,and movements of the pebbles in complex flow field were studied experimentally and *** spouting fluid through a central inlet pipe of a scaled visible PB-FHR core facility was set up to provide the complex flow *** was chosen as Liquid to simulate the molten salt coolant,and polypropylene balls were used to simulate the pebble *** show that the pebble flow pattern captured from experiment agrees well with the simulation from two-grid approach,hence the applicability of the two-grid approach for the later PB-FHR core design.

关键词： CFD模拟网格方法计算流体动力学核心模块最小流化速度堆芯设计固体速度六面体网格

Microstructure and grain boundary morphology evolution of a novel Co-9Al-9W-2Ta-0.02B alloy doped with yttrium

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Rare Metals 2017年第12期36卷 951-961页

作者： Jian-Qiang Ma Fei zhong Shu-Suo Li Jiang-Bo Sha School of Materials Science and Engineering Beihang University Beijing 100191 China

The microstructures and grain boundary morphologies of a novel Co-9 Al-9 W-2 Ta-0.02 B alloy doped with yttrium(Y)(0.01,0.05,0.10,and 0.20; at%) were investigated as functions of aging temperatures(900 and1000 ℃) and time(50 and 150 h). The aged alloys all exhibit a γ/γ’-Co(Al,W) coherent microstructure in grain interiors, whereas an intermetallic κ-Co(W) phase precipitates at grain boundaries. Y is found to fully segregate at grain boundaries and changes grain boundary precipitate morphologies. For 0.01 Y alloy, bright κ-Co(W) stripes precipitate along grain boundaries, where a needlelike κ-Co(W) phase grows from grain boundaries or κ-Co(W) stripes toward grain interior. As the nominal Y content increases, the stripe and needlelike κ-Co(W) precipitates at grain boundaries are strongly restrained and disappear in 0.20 Y alloy, leaving fine κ-Co(W) particles scattered at grain boundaries. It is noted that more Y segregation may increase the number of low-angle grain boundaries(LABS, with misorientations of <15°), whereas it eliminates O impurities from grain boundaries. Finally,the effect of Y segregation on tensile behavior of Co-AlW-Ta-B alloy was discussed from the viewpoints of grain boundary precipitate morphologies, grain boundary character distribution(GBCD), and impurity segregation.

关键词： Intermetallics Alloy design Grain boundary segregation Casting Microstructure

Micro-scale Cellular Automaton Modeling of Interface Evolution During Reaustenitization from Pearlite Structure in Steels

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Acta Metallurgica Sinica(English Letters) 2018年第7期31卷 713-722页

作者： Gang Shen Cheng-Wu Zheng Jian-Feng Gu Dian-zhong Li Institute of Materials Modification and Modelling School of Materials Science and Engineering Shanghai Jiao Tong University Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Materials Genome Initiative Center Shanghai Jiao Tong University Shanghai Key Laboratory of Materials Laser Processing and Modification Shanghai Jiao Tong University

A modified cellular automaton model is developed to depict the interface evolution inside the cementite plus ferrite lamellar microstructures during the reaustenitization of a pearlite steel. In this model, migrations of both the austenite- ferrite and austenite-cementite interfaces coupled with the carbon diffusion and redistribution are integrated. The capil- laxity effect derived from local interface curvatures is also carefully considered by involving the concentration given by the phase diagram modified by the Gibbs-Thomson effect. This allows the interface evolution from a transient state to a steady state under different annealing conditions and various interlamellar spacings to be simulated. The proposed cellular automaton approach could be readily used to describe the kinetics of austenite formation from the lamellar pearlites and virtually reveal the kinematics of the moving interfaces from the microstructural aspect.

关键词： Austenite formation Lamellar pearlite Interface evolution Cellular automaton Microstructural modeling

Implementations of newly developed wheel and rail profile design methods

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Journal of Traffic and Transportation Engineering(English Edition) 2014年第3期1卷 221-227页

作者： Gang Shen Xiaobo zhong Institute of Railway and Urban Mass Transit Tongji University

The developments of a series of wheel or CADF contact functions are briefly described. profile computer aided methods based on the RRDF Since 2001 the implementations of these methods are carded out according to different requirements for tramway vehicles, metro vehicles, and main line EMU vehicles etc. It is found that the main advantage of these new methods in wheel profile design is obtaining the proper wheel profiles to efficiently reduce the wears of wheel and rail and to improve the performances of both stability and curving performances. Moreover, post process of transfering a profile with discrete points to a profile with arc and line combinations is studied with a high precision.

关键词： wheel profile design method RRDF CADF

Photoactive donor-acceptor conjugated macrocycles:New opportunities for supramolecular chemistry

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Chinese Chemical Letters 2023年第8期34卷 28-48页

作者： Shanyuan zhong Lingyun Zhu Shuai Wu Yuanming Li Meijin Lin Key Laboratory of Molecule Synthesis and Function Discovery and Fujian Provincial Key Laboratory of Electrochemical Energy Storage MaterialsCollege of ChemistryFuzhou UniversityFuzhou 350116China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350116China

The design and synthesis of photoactive macrocyclic molecules continue to attract attention because such species play important roles in supramolecular chemistry as well as photoelectronic ***(D-A)conjugated macrocycles are an emerging class of photoactive molecules due to their D-A conjugated structural characteristics and tunable optical *** addition,the well-defined cavities in such D-A macrocycles endow them with versatile host-guest *** this review,we provide a comprehensive summary of D-A conjugated macrocycle chemistry,detailing recent progress in the area of synthetic methods,optical properties,host-guest chemistry and applications of the underlying chemistry to chemical sensors,bioimaging and photoelectronic *** objective is to provide not only a review of the fundamental findings,but also to outline future research directions where D-A conjugated macrocycles and their constructs may have a role to play.

关键词： Conjugated macrocycles Donor-acceptor Photoactive Supramolecular chemistry Photoelectronic materials

Model investigation of the low-carbon MgO-treated soil foundation based on CO_(2) overall carbonation

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第11期15卷 2901-2916页

作者： Guanghua Cai Songyu Liu Yuqing zhong Chisun Poon Jiangshan Li School of Civil Engineering Nanjing Forestry UniversityNanjing210037China Institute of Geotechnical Engineering School of TransportationSoutheast UniversityNanjing211189China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong999077China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China

The overall carbonation of MgO-admixed soil provides not only an efficient and environmentally friendly technique for improving soft ground but also a permanently safe solution for CO_(2) *** evaluate the carbon sequestration potential and promote the carbonation application in soil improvement,a laboratory-scale model investigation is designed under pressurized carbonation considering the influences of MgO dosage and CO_(2) ventilation mode(way).The temperature,dynamic resilience modulus,and dynamic cone penetration(DCP)were tested to assess the carbonation treatment *** physical,strength,and microscopic tests were also undertaken to reveal the evolution mechanisms of CO_(2) migration in the MgO-carbonated *** results indicate that the temperature peaks of MgO-treated foundation emerge at w20 h during hydration,but occur at a distance of 0e25 cm from the gas source within 6 h during *** dynamic resilience moduli of the model foundation increase by more than two times after carbonation and the DCP indices reduce *** the distance from the gas inlet increases,the bearing capacity,strength,and carbon sequestration decrease,whereas the moisture content *** to the end ventilation,the middle ventilation produces a higher carbonation degree and a wider carbonation *** cementation and filling of nesquehonite and dypingite/hydromagnesite are verified to be critical factors for carbonation evolution and enhancing mechanical ***,the overall carbonation model is described schematically in three stages of CO_(2) *** outcomes would help to facilitate the practical application of CO_(2) sequestration in soil treatment.

关键词： Model investigation Overall carbonation Reactive MgO Engineering properties Microscopic characteristics

The Agency of Matter in Brian Castro’s The Garden Book

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Journal of Foreign Languages and Cultures 2022年第2期6卷 44-55页

作者： Lili Ma Daoxian zhong Hebei Normal University

This paper examines the non-human actants in Brian Castro's novel The Garden Book,including nature,the human body,and human artifacts in light of Jane Bennett's theory of vibrant matter and Castro's own arguments about the status of *** subverts the life-matter binary in this novel,giving attentiveness and respect to material powers,as well as affect and empathy to objects,thus undermining *** a pandemic era in which humans and non-humans are seen as more interconnected than ever,such empowerment and understanding are not only significant,but also necessary to build a harmonized community.

关键词： agency of matter non-human actant life-matter binary empathy