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Chinese Physics Letters 1991年第8期8卷 400-403页

作者： MA en Massachusetts Institute of technology Cambridge MA 02139 IBM t.J.Watson Reseach Center Yorktown HeightsNY 10598USA the University of Michigan Ann ArborMI 48109-2104USA

We demonstrate that the combined use of differential scanning calorimetry(DSC)and cross-sectional transmission electron microscopy(XtEM)is a powerful technique in the quantitative investigation of the nucleation and growth of metastable and equilibrium phases during thin-film interdiffusion *** Various approaches and advantages of the DSC/XtEM technique in obtaining a variety of kinetic and thermodynamic data are *** reactions,as opposed to conventionally controlled reactions,may occur in thin films where the multilayer geometry is used.

关键词： Electron sectional metastable

Modeling and Predicting of News Popularity in Social Media Sources

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Computers, Materials & Continua 2019年第7期61卷 69-80页

作者： Kemal Akyol BahaŞen Faculty of engineering and Architecture Kastamonu University37100KastamonuTurkey Faculty of engineering Yıldırım Beyazıt University06500AnkaraTurkey

the popularity of news,which conveys newsworthy events which occur during day to people,is substantially important for the spectator or *** interact with news website and share news links or their *** study uses supervised learning based machine learning techniques in order to predict news popularity in social media *** techniques consist of basically two phrases:a)the training data is sent as input to the classifier algorithm,b)the performance of prelearned algorithm is tested on the testing *** so,a knowledge discovery from the data is *** this context,firstly,twelve datasets from a set of data are obtained within the frame of four categories:Economic,Microsoft,Obama and ***,news popularity prediction in social network services is carried out by utilizing Gradient Boosted trees,Multi-Layer Perceptron and Random Forest learning *** prediction performances of all algorithms are examined by considering Mean Absolute Error,Root Mean Squared Error and the R-squared evaluation *** results show that most of the models designed by using these algorithms are proved to be applicable for this ***,a comprehensive study for the news prediction is presented,using different techniques,drawing conclusions about the performances of algorithms in this study.

关键词： News popularity sentiment scores social network services Gradient Boosted Machines Multi-Layer Perceptron Random Forest

Monitoring and modeling of urban sprawl through remote sensing and GIS in Kuala Lumpur, Malaysia

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Ecological Processes 2015年第1期4卷 165-174页

作者： Mukesh Singh Boori Maik Netzband Komal Choudhary Vít Voženílek Palacky University Olomouc 17.listopadu 5077146 OlomoucCzech Republic Geographical Institute Ruhr University BochumBochumGermany Samara State Aerospace University SamaraRussia

Introduction:Kuala Lumpur is currently experiencing a large-scale urban *** study explores a multi-buffer ring method to investigate the spatial and temporal dynamics of urban growth in the Kuala Lumpur metropolitan area by using Geographical Information Systems(GIS)and remote sensing imageries from1989 to ***:the first Landsat images from 1989,2001,and 2014 were classified with maximum likelihood classification to produce land cover maps and identify four types of land cover:urban/built-up,agriculture,forest,and ***,the area coverage for all the land use types at different points in time were measured and combined with distance from the city *** on,urbanization densities from the city center to the outside for every 1-km distance from 1 to 50 km are ***:City density on the distance of 5,8,15,20,and 30 km was very high in the years 1989 and ***,urban expansion shows fast and slow growth stages with high-speed growth shifting to the east side of the ***:In general,the population,traffic conditions,industrialization,and policy are the major factors thatinfluenced the urban expansion.

关键词： Urbanization Landsat Change detection Remote Sensing GIS

Adminlstration of Hemoglobin Vesicle under Mechanical Ventilation Does Not Affect Lung Function

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Adminlstration of Hemoglobin Vesicle under Mechanical Ventil...

On the Relative twist Formula of l-adic Sheaves

第十一届国际人工血液大会

作者： Izumi Y yamada t.ogawa en Morisaki H Sakai H Horinouchi H takeda J tsuchida E Kobayashi K Division of General thoracic Surgery Department of Anesthesia School of Medicine Keio UniversityTokyoJapan Advanced Research Institute for Sci and eng Waseda UniversityTokyo Japan

＜正＞Hemoglobin Vesicle（HbV）contains concentrated hemoglobin solution within a phospholipid *** a resuscitative fluid,it will potentially be administered to patients receiving care in the intensive care unit,which includes mechanical *** did not affect lung function when administered under spontaneous breathing In this study,we administered HbV when the Iung was mechanically *** were mechanically

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Acta Mathematica Sinica,english Series 2021年第1期37卷 73-94页

作者： en Lin YANG Yi Geng ZHAO School of Mathematical Sciences Peking UniversityBeijing 100871P.R.China Fakultät für Mathematik Universität Regensburg93040 RegensburgGermany

We propose a conjecture on the relative twist formula of l-adic sheaves,which can be viewed as a generalization of Kato-Saito’s *** verify this conjecture under some transversal *** also define a relative cohomological characteristic class and prove that its formation is compatible with proper push-forward.A conjectural relation is also given between the relative twist formula and the relative cohomological characteristic class.

关键词： Epsilon factor twist formula cohomological characteristic class Künneth formula

transformation, Deformation and Microstructure Characteristics of Ru_(50)ta_(50) High temperature Shape Memory Alloy

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Journal of Materials Science & technology 2006年第5期22卷 634-638页

作者： Zhirong HE Fang WANG Jing＇en ZHOU Department of Materials Science and engineering Shaanxi University of Technology Hanzhong 723003 China Library Shaanxi University of Technology Hanzhong 723003 China School of Materials Science and engineering Xi＇an Jiaotong University Xi＇an 710049 China

the basic martensitic transformation （Mt） properties of Ru50ta50 alloy, i.e. Mt temperature （Mtt）, temperature hysteresis （△t）, and Mt heat （△H） were investigated in this paper. the effects of heat treatment and thermal cycling on Mt behavior of Ru50ta50 alloy, the deformation and microstructure characteristics of Ru50ta50 alloy were also studied for its engineering application as high temperature actuator/sensor materials by means of differential scanning calorimetry, X-ray diffraction, transmission electron microscope, optical microscope, and hardness test. the results showed that a two-stage reversible Mt takes place in Ru50ta50 alloy. the two-stage Mt starting temperatures （Ms^1, Ms^2） and the temperature hysteresis （△t1, △t2） are 1047, 784 and 11, 14℃, respectively. No significant effect of aging treatment and thermal cycling on Mtt and At of Ru50ta50 alloy were observed, but △H decreases slowly with increasing thermal cycles. the hardness and brittleness of Ru50ta50 alloy are high. the deformation mode of Ruta alloys is twinning.

关键词： Ruta alloy Shape memory alloy Martensitic transformation Heat treatment thermal cycle

COFs-based Porous Materials for Photocatalytic Applications

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Chinese Journal of Polymer Science 2020年第7期38卷 673-684,I0004页

作者： Xun-Liang Hua He-Guo Li Bi-en tan Key Laboratory of Material Chemistry for energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of NBC Protection for Civilian Research Institution of Chemical DefenseBeijing 100191China

Covalent organic frameworks(COFs)are an emerging class of photoactive materials,solely composed of light *** ordered structure,crystallinity,and high porosity led to enormous worldwide attention in many research *** extensiveπ-electron conjugation,light-harvesting and charge transport characteristics make them a fascinating polymer for photocatalytic *** selection of building blocks and innumerable synthetic methodologies enable them to be a robust platform for solar energy *** this mini-review,we summarized recent progress and challenges of the design,construction,and applications of COFs-based photocatalysts,and also presented some perspectives on challenges.

关键词： Covalent organic frameworks(COF) Covalent triazine frameworks(CtF) Photocatalysis

Optimization therapy for the treatment of chronic hepatitis B

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World Journal of Gastroenterology 2014年第19期20卷 5730-5736页

作者： en-Qiang Chen Hong tang Center of Infectious Diseases West China Hospital of Sichuan University Division of Infectious Diseases State Key Laboratory of BiotherapySichuan University

Chronic hepatitis B (CHB) is currently medically managed with either interferon-alpha or one of the five nucleos(t)ide analogs. However, there are still a large number of CHB patients whose response to the above therapies remains less than satisfactory, and their incomplete or non-response to antiviral therapies has plagued clinicians worldwide. In recent years, a newly proposed optimization therapy has provided us with a new approach to solve this problem. the key points in this optimization therapy are to initiate antiviral therapy with an appropriate agent at the correct time point, and to adjust treatments in patients with poor early responses by adding a second agent or switching to another more potent agent. In this review, we summarize recent developments in optimization therapy for the treatment of CHB, and provide an outlook for future research in this field. (C) 2014 Baishideng Publishing Group Inc. All rights reserved.

关键词： Chronic hepatitis B Nucleos(t)ide analog Interferon Suboptimal response Optimization therapy

A Restriction on the Duration and Peak energy of Gamma-Ray Bursts

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Chinese Journal of Astronomy and Astrophysics 2002年第4期2卷 347-351页

作者： en－WeiLiang Yi－PingQin 等 YunnanObservatory NationalAstronomicalObservatoriesChineseAcademyofSciencesKunming650011

two dimensional distributions of t90 versus Epeak (or Ebreak) for three bright GRB samples have been investigated. the result shows that although both t90 and Epeak (or Ebreak) each span over a wide range, they are restricted to the region log(t90)≤ - log(Epeak) + 5.24. this cannot be explained by the current fireball model. It may represent a constraint on the fireball model.

关键词： gamma rays: bursts

Melt flow,heat transfer and solidification in a flexible thin slab continuous casting mold with vertical-combined electromagnetic braking

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Journal of Iron and Steel Research International 2024年第2期31卷 401-415页

作者： Lin Xu Ze-feng Han Christian Karcher en-gang Wang Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang110819LiaoningChina Key Laboratory of Liaoning Province for Clean Combustion Power Generation and Heating technology Shenyang Institute of EngineeringShenyang110136LiaoningChina Institute of thermodynamics and Fluid Mechanics Technische Universität IlmenauIlmenau98684Germany

During continuous casting of steel slabs,the application of electromagnetic braking technology(EMBr)provides an effective tool to influence solidification by controlling the pattern of melt flow in the ***,the quality of the final product can be improved considerably.A new electromagnetic braking(EMBr)method,named vertical-combined electromagnetic braking(VC-EMBr),is proposed to be applied to a flexible thin slab casting(FtSC)*** evaluate the beneficial effects of the VC-EMBr,the melt flow,heat transfer,and solidification processes in the FtSC mold are studied by means of numerical *** detail,a Reynolds-averaged Navier–Stokes turbulence model together with an enthalpy-porosity approach was *** numerical findings are compared with respective simulations using the traditional *** results demonstrate that the application of the VC-EMBr contributes significantly to preventing relative slab *** contrast to the Ruler-EMBr,the additional vertical magnetic poles of the VC-EMBr preferentially suppress the direct impact of jet flow on the narrow face of FStC mold and considerably diminish the level fluctuation near the meniscus *** instance,by applying a magnetic flux density of 0.3 t,the maximum amplitude of meniscus deflection reduces by about 80%.Moreover,the braking effect of the VC-EMBr effectively improves the homogeneity of temperature distribution in the upper recirculation region and increases the solidified shell thickness along the casting *** this basis,the newly proposed VC-EMBr shows a beneficial effect in preventing relative slab defects for FtSC thin slab continuous casting.

关键词： Electromagnetic braking Mold Melt flow Heat transfer Solidification