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Understanding the creep behaviors and mechanisms of Mg-Gd-Zn alloys via machine learning

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Journal of Magnesium and Alloys 2024年第8期12卷 3281-3291页

作者： Shuxia Ouyang Xiaobing Hu Qingfeng Wu Jeong Ah lee Jae Heung lee Chenjin Zhang Chunhui Wang Hyoung Seop Kim Guangyu Yang Wanqi jie Graduate Institute of Ferrous and Eco Materials Technology(GIFT) Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Xi’an Rare Metal Materials lnstitute Co.Ltd Xi’an 710016China Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea DepartmentAdvanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722South Korea

Mg-Gd-Zn based alloys have better creep resistance than other Mg alloys and attract more attention at elevated ***,the multiple alloying elements and various heat treatment conditions,combined with complex microstructural evolution during creep tests,bring great challenges in understanding and predicting creep *** this study,we proposed to predict the creep properties and reveal the creep mechanisms of Mg-Gd-Zn based alloys by machine *** the one hand,the minimum creep rates were effectively predicted by using a support vector regression *** complex and nonmonotonic effects of test temperature,test stress,alloying elements,and heat treatment conditions on the creep properties were *** the other hand,the creep stress exponents and creep activation energies were calculated by machine learning to analyze the variation of creep mechanisms,based on which the constitutive equations of Mg-Gd-Zn based alloys were *** study introduces an efficient method to comprehend creep behaviors through machine learning,offering valuable insights for the future design and selection of Mg alloys.

关键词： Mg-Gd-Zn based alloys Machine learning Creep rate Creep mechanism Constitutive equation

Conceptualizing Mining of Firm's Web Log Files

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Journal of Systems Science and Information 2017年第6期8卷 489-510页

作者： Ruangsak TRAKUNPHUTTHIRAK yen CHEUNG Vincent C.S.lee Faculty of IT Clayton CampusMonash University25 Exhibition WalkClaytonAustralia

In this era of a data-driven society, useful data(Big Data) is often unintentionally ignored due to lack of convenient tools and expensive software. For example, web log files can be used to identify explicit information of browsing patterns when users access web sites. Some hidden information,however, cannot be directly derived from the log files. We may need external resources to discover more knowledge from browsing patterns. The purpose of this study is to investigate the application of web usage mining based on web log files. The outcome of this study sets further directions of this investigation on what and how implicit information embedded in log files can be efficiently and effectively extracted. Further work involves combining the use of social media data to improve business decision quality.

关键词： web usage mining web log files Big Data machine learning business intelligence

Some New Fossil Localities in the Eastern Tsinling

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地质学报 1938年第Z1期 227-239页

作者： YUEH-yen lee Geological Survey of China

Ⅰ.INTRODUCTION The Tsinling range is situated in the central part of China and trendsin an east-west *** to the present time,its extensions andboundaries have not yet been definitely defined and the term"EasternTsinl... 详细信息

关键词： Some New Fossil Localities in the Eastern Tsinling

The Eafly Tediary Deposits of the Yuanchü Basin on the Honan-Shansi Border

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地质学报 1938年第Z1期 241-257+441-442页

作者： YUEH-yen lee Geological Survey of China

Ⅰ.INTRODUCTION The early Tertiary deposits of Yuanchü,Shansi and of Mienchih,Honan were discovered in 1916 and restudied in 1921 by ***;.

关键词： De Basin on the Honan-Shansi Border The Eafly Tediary Deposits of the Yuanch

Magnetic nanoparticles used in headspace extraction coupled with DSI-GC-IT/MS for analysis of VOCs in dry Traditional Chinese Medicine

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Chinese Chemical Letters 2016年第1期27卷 178-184页

作者： Jing Nie Yuan-jie Teng Zu-Guang Li Wen-Han Liu Maw-Rong lee College of Chemical Engineering Zhejiang University of Technology Department of Chemistry National Chung-Hsing University

A novel magnetic method using polystyrene modified magnetic nanoparticles to perform thermoheadspace extraction was successfully developed for extraction and preconcentration of volatile organic components in dry Traditional Chinese Medicine（TCM） based on gas chromatography-ion trap/mass spectrometry with a Chromato Probe direct sample introduction device. The dried fruit of Amomum testaceum Ridl. was used as the object TCM. The optimum parameters of headspace magnetic solid-phase extraction were investigated, in which desorption solvent ethyl acetate played a key role in this method,and the headspace extraction temperature of 90℃ and the headspace extraction time of 15 min finally decided. Headspace solid-phase microextraction method was also used to analyze volatile compounds in the TCM to compare with the proposed method. The results show that 60 components were identified totally by two methods; most of the low boiling point chemical compounds are isolated by this new method. In this work, an environmental-friendly and cheap analytical method was established, and a new approach to analyze volatile compounds in dry Traditional Chinese Medicine was also provided.

关键词： Magnetic nanoparticles Direct sample introduction Volatile components Traditional Chinese Medicine

Improved method for measuring the δ15N compound-specific amino acids: Application on mesopelagic fishes in the South China Sea

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Acta Oceanologica Sinica 2022年第1期41卷 30-38页

作者： Fuqiang Wang Ying Wu Lin Zhang jie Jin Zuozhi Chen Jun Zhang Wing-man lee State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China Center for Blue Life Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Department of Physical and Environmental Science Texas A&M University-Corpus ChristiTexa 78412USA Key Field Scientific Experimental Station of South China Sea Fishery Resource and Environment Ministry of Agriculture and Rural AffairsGuangzhou 510300China South China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhou 510300China

Compound-specific stable isotope analysis of individual amino acids(CSIA-AA)has been widely used in ecological and biogeochemical *** has been proven to be powerful in tracing the diet sources and trophic ***,assessing the N sources of mesopelagic fishes has been inconclusive because the mesopelagic fishes’unique domain(water depth ranged from 0 to 1000 m)and unresolved nitrogen isotopes of various *** study proposes a new method for coupling instruments(ion chromatography and PreconIRMS)and chemical method of oxidation-reduction of amino acids,and also combinedδ15N of AAs withδ13C of fatty acids(FAs)to analyze the trophic interactions of mesopelagic fishes in the South China Sea(SCS).AAs were isolated by ion chromatography with high peak resolution and collected by an automated fraction *** chemical method then converted the AAs into N2 O with a robust oxidation yields and suitable molar ratio of NH2 OH ***,theδ15N of AAs at 20 nmol were measured with a reasonable precision(<0.6‰).With this method,this study report the first batch high precisionδ15N of AAs andδ13C of FAs of mesopelagic fishes collected from *** luetkeni,Chauliodus minimus and Bathygadus antrodes showed similarδ13C values of 20:4 n-6(~-28‰),while Argyropelecus affinis and Stomias had similar values(~-32‰).These results reflect that mesopelagic fishes had complex diet *** increase of 4‰inδ15N of glutamic acid(Glu)was found between piscivorous and planktivorous fishes,which might suggest a trophic discrimination factor of mesopelagic fishes in the *** study usedδ13C of 20:4 n-6 to reveal the diet sources of mesopelagic fishes andδ15N of Glu to clarify trophic level between piscivorous and planktivorous ***,this combinative method could therefore ultimately be applied in a variety of deep-sea ecosystem.

关键词： δ13C of fatty acids δ15N of amino acids ion chromatography mesopelagic fishes Precon-IRMS

Dual-logic-in-memory implementation with orthogonal polarization of van der Waals ferroelectric heterostructure

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InfoMat 2024年第2期6卷 107-117页

作者： Jingjie Niu Sumin Jeon Donggyu Kim Sungpyo Baek Hyun Ho Yoo jie Li Ji-Sang Park Yoonmyung lee Sungjoo lee SKKU Advanced Institute of Nanotechnology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Department of Nano Science and Technology Sungkyunkwan UniversitySuwonRepublic of Korea Department of Electrical and Computer Engineering Sungkyunkwan UniversitySuwonRepublic of Korea IMEC HeverleeBelgium Department of Nano Engineering Sungkyunkwan UniversitySuwonRepublic of Korea

The rapid advancement of AI-enabled applications has resulted in an increasing need for energy-efficient computing ***-in-memory is a promising approach for processing the data stored in memory,wherein fast and efficient computations are possible owing to the parallel execution of reconfigurable logic *** this study,a dual-logic-in-memory device,which can simultaneously perform two logic operations in four states,is demonstrated using van der Waals ferroelectric field-effect transistors(vdW FeFETs).The proposed dual-logic-in-memory device,which also acts as a twobit storage device,is a single bidirectional polarization-integrated ferroelectric field-effect transistor(BPI-FeFET).It is fabricated by integrating an in-plane vdW ferroelectric semiconductor SnS and an out-of-plane vdW ferroelectric gate dielectric material—CuInP_(2)S_(6).Four reliable resistance states with excellent endurance and retention characteristics were *** two-bit storage mechanism in a BPI-FeFET was analyzed from two perspectives:carrier density and carrier injection controls,which originated from the out-of-plane polarization of the gate dielectric and in-plane polarization of the semiconductor,*** conventional multilevel FeFETs,the proposed BPIFeFET does not require additional pre-examination or erasing steps to switch from/to an intermediate polarization,enabling direct switching between the four memory *** utilize the fabricated BPI-FeFET as a dual-logic-inmemory device,two logical operations were selected(XOR and AND),and their parallel execution was *** types of logic operations could be implemented by selecting different initial states,demonstrating various types of functions required for numerous neural network *** flexibility and efficiency of the proposed dual-logic-in-memory device appear promising in the realization of next-generation low-power computing systems.

关键词： ferroelectric field-effect transistor in-plane ferroelectricity logic-in-memory out-of-plane ferroelectricity

Factors associated with seeking western or Chinese medical treatment for fertility among women with breast cancer in Taiwan

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Journal of Traditional Chinese Medicine 2018年第6期38卷 904-910页

作者： Ping-Ho Chen Sheng-Miauh Huang Jerry Cheng-yen Lai Chen-Jei Tai Li-Yin Chien Yun-Hsiang lee Department of Traditional Chinese Medicine Taipei Medical University HospitalTaipei 110Taiwan China Department of Nursing Mackay Medical CollegeNewTaipei City 252Taiwan China Department of Medical Research Taitung Mackay Memorial HospitalTaitung 950Taiwan China Department of Traditional Chinese Medicine Taipei Medical University Hospital and Department of MedicineTaipei Medical UniversityTaipei 110Taiwan China Institute of Community Health care National Yang-Ming UniversityTaipei 112Taiwan China School of Nursing College of MedicineNational Taiwan UniversityTaipei 106Taiwan China

OBJECTIVE: To examine and describe the use of Western and Chinese Medicine for pregnancy preparation among women with breast cancer after cancer-related treatment in ***: Women of reproductive age(20-49years) women who were treated for breast cancer from January 2011 through June 2015 in a Taiwan Residents city participated in the study. Of 306 eligible study participants, interviews were completed in197(64%). Participants were asked about sociodemographic variables, disease and treatment characteristics, their desire for fertility, and their use of Western or Chinese ***: The proportions of women who planned to use Western or Chinese Medicine to help achieve pregnancy were 17.3% and 14.7%, respectively. The result of binary logistic regression showed that current employment and lack of children were factors predictive of the use of Western Medicine. Younger age and the use of Chinese Medicine before treatment were predictors of using Chinese Medicine. While the desire for fertility preservation was related to the use of Western Medicine,the desire for pregnancy was related to the use of Chinese ***: Various characteristics guided the women's decisions to use Western or Chinese Medicine. Health care providers should learn patients' preferences for fertility preservation and provide appropriate advice, referring them to safe providers of their desired method of fertility treatment.

关键词： Breast neoplasms Fertility preservation Pregnancy Chinese Medicine Western Medicine Observational study Cross-sectional studies

Protein-protein complexation in bioluminescence

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Protein & Cell 2011年第12期2卷 957-972页

作者： Maxim S.Titushin Yingang Feng John lee Eugene S.Vysotski Zhi-jie Liu National Laboratory of Biomacromolecules Institute of BiophysicsChinese Academy of SciencesBeijing 100101China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China Department of Biochemistry and Molecular Biology University of GeorgiaAthensGA 30602USA Laboratory of Photobiology Institute of Biophysics Russian Academy of SciencesSiberian BranchKrasnoyarsk 660036Russia

In this review we summarize the progress made towards understanding the role of protein-protein interactions in the function of various bioluminescence systems of marine organisms,including bacteria,jellyfish and soft corals,with particular focus on methodology used to detect and characterize these *** some bioluminescence systems,protein-protein interactions involve an“accessory protein”whereby a stored substrate is efficiently delivered to the bioluminescent enzyme *** types of complexation mediate energy transfer to an“antenna protein”altering the color and quantum yield of a bioluminescence *** structures of the complexes reveal an important role of electrostatic forces in governing the corresponding weak interactions and define the nature of the interaction *** most reliable structural model is available for the protein-protein complex of the Ca2+-regulated photoprotein clytin and green-fluorescent protein(GFP)from the jellyfish Clytia gregaria,solved by means of Xray crystallography,NMR mapping and molecular *** provides an example of the potential strategies in studying the transient complexes involved in *** is emphasized that structural studies such as these can provide valuable insight into the detailed mechanism of bioluminescence.

关键词： green-fluorescent protein(GFP) photoprotein luciferase lumazine protein Förster resonance energy transfer(FRET) docking