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Chinese Physics Letters 1999年第10期16卷 747-749页

作者： ZHANG Yong-gang LI Ai-zhen chen jian-xin YANG Quan-kui REN Yao-cheng State Key Laboratory of Functional Materials for Informatics Shanghai Institute of MetallurgyChinese Academy of SciencesShanghai 200050

Gas source molecular beam epitaxy grown InP-based InAlAs/InGaAs quantum well infrared photodetectors operating at 3—5 pm atmosphere window have been fabricated;their structural,electrical and optical characteristics have been *** detectors show peak response wavelength Ap at 3.85μm,with spectral width AX/Xp of 4.6%and 7.2%at 1 and 5 V bias voltages,*** low dark current of the detectors has been *** 2 V bias the dark current is below InA at 77K and remains low value of 10 nA at 150 *** background limited infrared performance temperature Tblip as high as 165 K has been measured.

关键词： InP Infrared Quantum

InAsP/InGaAsP Strained Microstructures Grown by Gas Source Molecular Beam Epitaxy

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Chinese Physics Letters 2000年第6期17卷 435-437页

作者： chen Yi-Qiao chen jian-xin ZHANG Yong-Gang LI Ai-Zhen K.Frbjdh B.Stotz State Key Laboratory of Functional Materials for Informatics Shanghai Institute of MetallurgyChinese Academy of SciencesShanghai 200050 Ericsson Components AB Microelectronics DivisionOpto Electronic ProductsIsafjordsgatan 16KISTASE-16481 KISTA-STOCKHOLMSweden

Device quality InAsP/InGaAsP strained multiquantum-well(MQW)structures are successfully grown by using gas source molecular beam epitaxy *** grown MQW and InGaAsP quanternary alloy are characterized by using x-ray diffraction,room temperature photoluminescence measurements,confirming that optimum growth condition and high quality material have been obtained for device *** grown laser structures are processed into ridge waveguide lasers.A threshold current as low as 16mA at 250C for 300μm long device has been ***-dependent light-current measurement shows a characteristic temperature of75K.

关键词： InGaAsP waveguide Epitaxy

Species-specific SCAR markers for authentication of Sinocalycanthus chinensis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第11期7卷 868-872页

作者： YE Qian QIU Ying-xiong QUO Yan-qi chen jian-xin YANG Shu-zhen ZHAO Ming-shui FU cheng-xin Laboratory of Systematic and Evolutionary Botany and Biodiversity School of Life Sciences Zhejiang University Hangzhou 310029 China Management Bureau of Tianmushan National Nature Conservative Area Lin ＇an 311311 China

Sinocalycanthus chmensis, an endangered species endemic to China, is cultivated as an omamental landscape tree in China. However, S. chinensis, Chimonanthus species and Calycanthusfloridus are difficult to be distinguished in seedling market because of their similar morphological characters. In this study, ISSR （inter-simple sequence repeats） were applied to detect S. chinensis from its closely related species. A unique 748-bp band was found in all accessions of S. chinensis. SCAR （sequence characterized amplified regions） markers were created by cloning and sequencing the specific band, and designing a pair of primers to amplify the band of 748 bp. Diagnostic PCRs were performed using the primer pair with the total DNAs ofS. chinensis, Chimonanthus species and C. floridus as templates, with only S. chinensis being able to be amplified. This amplification is not only rapid （results can be obtained in less than 3 h）, but is also easy to perform. Hence it is a feasible method for identifying S. chmensis in seedling market.

关键词： Authentication Diagnostic PCRs ISSR SCAR Sinocalycanthus chinensis Specie-specific

High-throughput screening of CO_(2) cycloaddition MOF catalyst with an explainable machine learning model

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Green Energy & Environment 2025年第1期10卷 132-138页

作者： Xuefeng Bai Yi Li Yabo Xie Qiancheng chen xin Zhang jian-Rong Li Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemical Engineering College of Materials Science&EngineeringBeijing University of TechnologyBeijing100124China

The high porosity and tunable chemical functionality of metal-organic frameworks(MOFs)make it a promising catalyst design ***-throughput screening of catalytic performance is feasible since the large MOF structure database is *** this study,we report a machine learning model for high-throughput screening of MOF catalysts for the CO_(2) cycloaddition *** descriptors for model training were judiciously chosen according to the reaction mechanism,which leads to high accuracy up to 97%for the 75%quantile of the training set as the classification *** feature contribution was further evaluated with SHAP and PDP analysis to provide a certain physical understanding.12,415 hypothetical MOF structures and 100 reported MOFs were evaluated under 100℃ and 1 bar within one day using the model,and 239 potentially efficient catalysts were *** them,MOF-76(Y)achieved the top performance experimentally among reported MOFs,in good agreement with the prediction.

关键词： Metal-organic frameworks High-throughput screening Machine learning Explainable model CO_(2)cycloaddition

BET Surface Area and Porous Structure of Fullerenes and Fullerene Soots

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Chemical Research in Chinese Universities 1999年第1期15卷 92-95页

作者： chen jian-xin SHENG Guo-ying LIU Shu-ying LIU Zi-yang LIU Zhi-qiang FU Jia-mo ZHANG Xiao-mei Changchun Institute of Applied Chemistry a Chinese Academy of SciencesChangchun130022 State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of ScienoesGuangzhou510640 Institute of Animal Saience Guangdong Acadeny of Agricultural Science510640 Environmental Monitoring Centeral Station off Jilin Province Changchun130011

ＩｎｔｒｏｄｕｃｔｉｏｎＡｆａｓｃｉｎａｔｉｎｇｓｏｌｉｄｂｌａｃｋｃｏｎｄｅｎｓａｔｅ（ｈｅｒｅｃａｌｅｄｆｕｌｅｒｅｎｅｓｏｏｔ）ｉｓｇｅｎｅｒａｔｅｄｉｎｔｈｅｇａｓｐｈａｓｅａｎｄｄｅｐｏｓｉｔｅｄｄｕｒｉｎ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＡｆａｓｃｉｎａｔｉｎｇｓｏｌｉｄｂｌａｃｋｃｏｎｄｅｎｓａｔｅ（ｈｅｒｅｃａｌｅｄｆｕｌｅｒｅｎｅｓｏｏｔ）ｉｓｇｅｎｅｒａｔｅｄｉｎｔｈｅｇａｓｐｈａｓｅａｎｄｄｅｐｏｓｉｔｅｄｄｕｒｉｎｇｔｈｅｄｉｓｃｈａｒｇｅｉｎａＫ...

关键词： Fullerenes Fullerene soots Surface area Pore size distribution Adsorbent

激光椭偏率对类镍氪系统光场感生电离参数的影响

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光电子．激光 2005年第10期16卷 1197-1201页

作者：陈建新福建师范大学物理与光电信息科技学院福建福州350007

研究了激光椭偏率对基于光场感生电离(OFI)电子碰撞机制类镍氪(NLK)系统电离参数的影响。计算结果表明,激光椭偏率对NLK系统的电离速率、电离电子剩余能、各电荷态相对集居数随时间的变化以及初始电子能量分布等电离参数的影响较大,圆... 详细信息

研究了激光椭偏率对基于光场感生电离(OFI)电子碰撞机制类镍氪(NLK)系统电离参数的影响。计算结果表明,激光椭偏率对NLK系统的电离速率、电离电子剩余能、各电荷态相对集居数随时间的变化以及初始电子能量分布等电离参数的影响较大,圆偏振激光场是实现NLK 32.8 nm X射线激光放大的最佳激励光场。理论计算表明,在圆偏振飞秒激光驱动下,实现NLK 32.8 nm X射线激光放大需要的最低激光强度为3.5×1016W/cm2,最高激光强度为1.6×1017W/cm2,实验估计的激光强度可能在5×1017W/cm2以上。

关键词：光场感生电离类镍氪(NLK)系统电离参数激光椭偏率

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可对称化矩阵特征值的任意扰动

电子科技大学学报 2005年第1期34卷 121-123页

作者：陈建新广东工业大学应用数学学院广州510006

针对可对称化矩阵,研究了可对称化矩阵特征值的任意扰动和实任意扰动。从Schur分解入手,利用矩阵可对角化的性质,通过矩阵等式的恒等变形,得到了可对角化矩阵关于F-范数和Q-范数的任意扰动界。

关键词：可对称化矩阵扰动界 F-范数 Q-范数

A study of sensitized photooxygenation of 3,4-dihydro-2H-pyran

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Chinese Journal of Chemistry 1986年第1期4卷 1-6页

作者： CAO Yi chen jian-xin ZHANG Bao-Wen MING Yang-Fu Institute of Photographic Chemistry, Academia Sinica, Beijing Institute of Photographic Chemistry Academia Sinica Beijing

The photooxygenation of 3,4-dihydro-2H-pyran sensitized by cyanoanthracenes（9, 10-dicyanoanthracene and 9-cyanoanthracene） in different solvents （CH3CN, CH2Cl2, C6H6and CCl4）has been studied in this paper. The products, product distribution as well as solvent isotope effect arethe same as those in the reaction of singlet oxygen. Fluorescence quenching, exciplex formation andfree energy change also reveal that electron transfer occurs between sensitizer-excited singlet state andsubstrate and then singlet oxygen is formed subsequently as the reactive intermediate in the process.

关键词： DCA CNA A study of sensitized photooxygenation of 3,4-dihydro-2H-pyran

9,10-Dicyanoanthracene-sensitized photooxidation of 1,4-diphenyl-1,3-butadiene in acetonitrile

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Chinese Journal of Chemistry 1985年第3期3卷 290-291页

作者： chen jian-xin CAO Yi ZHANG Bao-Wen MING Yang-Fu Institute of Photographic Chemistry,Academia Sinica,Beijing Institute of Photographic Chemistry Academia Sinica Beijing

By USing cyanoaromatic sensitizers,some alkenes,alkyties sulfides,and OXiranes which donot undergo photooxidation with singlet oxygen（1O2）may react readily with oxygen viaan electron transfer *** works of Santamaria,1Foote2as well as ours have beenmainly concerned with the possible singlet oxygen reactions involVed in the electron *** this communication,we report the 9,10-dicyanoanthracene（DCA）sensitized photooxidation of,trans,trans-1,4-dipheny1-1,3-butadiene and try to clarify itsmechanism.

关键词： Dicyanoanthracene-sensitized photooxidation of 1,4-diphenyl-1,3-butadiene in acetonitrile DCA

Identifying Metabolite and Protein Biomarkers in Unstable Angina In-patients by Feature Selection Based Data Mining Method

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Chemical Research in Chinese Universities 2011年第1期27卷 87-93页

作者： SHI cheng-he ZHAO Hui-hui HOU Na chen jian-xin SHI Qi XU Xue-gong WANG Juan ZHENG cheng-long ZHAO Ling-yan YANG Yi WANG Wei Department of Traditional Chinese Medicine Peking University Third Hospital Beijing 100191 P. R. China Beijing University of Chinese Medicine Beijing 100029 P. R. China Beijing Hospital of Traditional Chinese Medicine Beijing 100010 P. R. China

Unstable angina（UA） is the most dangerous type of Coronary Heart Disease（CHD） to cause more and more mortal and morbid world wide. Identification of biomarkers for UA at the level of proteomics and metabolomics is a better avenue to understand the inner mechanism of it. Feature selection based data mining method is better suited to identify biomarkers of UA. In this study, we carried out clinical epidemiology to collect plasmas of UA in-patients and controls. Proteomics and metabolomics data were obtained via two-dimensional difference gel electrophoresis and gas chromatography techniques. We presented a novel computational strategy to select biomarkers as few as possible for UA in the two groups of data. Firstly, decision tree was used to select biomarkers for UA and 3-fold cross validation was used to evaluate computational performanees for the three methods. Alternatively, we combined inde- pendent t test and classification based data mining method as well as backward elimination technique to select, as few as possible, protein and metabolite biomarkers with best classification performances. By the method, we selected 6 proteins and 5 metabolites for UA. The novel method presented here provides a better insight into the pathology of a disease.

关键词： Biomarker Metabolomics Proteome Feature selection Data mining Unstable angina