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Extremely Narrow Sb Delta-Doped Epitaxial Layer Characterized by X-Ray Reflectivity

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Chinese Physics Letters 1997年第9期14卷 686-689页

作者： JIANG Zui-min XIU Li-song JIANG Xiao-ming ZHENG Wen-li LU Xue-kun ZHU hai-jun ZHANG Xiang-jiu WANG Xun Fudan T.D.Lee Physics Laboratory Surface Physics Laboratoryfudan UniversityShanghai 200433 Synchrotron Radiation Laboratory Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100039 Surface Physics Laboratory Fudan UniversityShanghai 200433

An Sb delta doping layer in silicon is grown at the temperature of 300℃ by silicon molecular beam epitaxy and characterized by the small angle x-ray reflectivity measurement using synchrotron radiation *** oscillations of the reflectivity caused by dopant Sb at Q as large as 14.5 are *** of this curve as a whole shows that the total amount of dopant Sb is 0.15 monolayer and is restricted to two atomic *** extremely narrow Sb delta doping structure without Sb segregation is thus obtained at the growth temperature of 300℃ as verified by the experiment.

关键词： dopant reflectivity doping

鲨鱼软骨血管抑制因子的高效液相色谱与电喷雾质谱研究

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高等学校化学学报 1999年第12期20卷 1868-1870页

作者：岳贵花杨芃原沈先荣吉冬梅任大明刘为平许云敏王洪海复旦大学化学系上海200433 复旦大学上海200433

The studies of SCAIF I(an unknown protein) by HPLC and ESIMS was reported in this paper. The SCAIF I is a kind of antiangiogenesis extracted from shark cartilage. The extracted protein was purified by HPLC and then studied by ESIMS. The molecule weight of the SCAIF I protein was confirmed to be 15 601 in the first time. Peptide map of the unknown protein was obtained by HPLC ESIMS with a trypsin digestion and possible partial sequences were deduced with the online CID technique. With partial sequence information the homologous proteins are searched with protein database. The homology of SCAIF I summarized in this work is useful in further studies of this unknown protein.

关键词：鲨鱼软骨血管抑制因子液相色谱电喷雾质谱

Development of a surface plasmon resonance biosensor for accurate and sensitive quantitation of small molecules in blood samples

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Journal of Pharmaceutical Analysis 2022年第6期12卷 929-936页

作者： Minyu Qi Diya Lv Ying Zhang Dongyao Wang Xiaofei Chen Zhenyu Zhu Zhanying Hong Yifeng Chai hai Zhang Yan Cao Department of Biochemical Pharmacy Faculty of PharmacyNaval Medical UniversityShanghai200433China Pharmaceutical Analysis and Testing Center Faculty of PharmacyNaval Medical UniversityShanghai200433China Department of Pharmaceutical Analysis Faculty of PharmacyNaval Medical UniversityShanghai200433China Department of Pharmacy Shanghai First Maternity and Infant HospitalTongji University School of MedicineShanghai201204China

Therapeutic drug monitoring(TDM)has played an important role in clinical medicine for precise ***,chromatographic technology and immunoassay detection are widely used in TDM and have met most of the needs of clinical drug ***,some problems still exist in practical applications,such as complicated operation and the influence of endogenous *** plasmon resonance(SPR)has been applied to detect the concentrations of small molecules,including pesticide residues in crops and antibiotics in milk,which indicates its potential for in vivo drug *** this study,a new SPR-based biosensor for detecting chloramphenicol(CAP)in blood samples was developed and validated using methodological verification,including precision,accuracy,matrix effect,and extraction recovery rate,and compared with the classic ultra-performance liquid chromatographyultraviolet(UPLC-UV)*** detection range of SPR was 0.1-50 ng/mL and the limit of detection was 0.099±0.023 ng/mL,which was lower than that of *** intra-day and inter-day accuracies of SPR were 98%-114% and 110%-122%,which met the analysis *** results show that the SPR biosensor is identical to UPLC-UV in the detection of CAP in rat blood samples;moreover,the SPR biosensor has better ***,the present study shows that SPR technology can be used for the detection of small molecules in the blood samples and has the potential to become a method for therapeutic drug monitoring.

关键词： Surface plasmon resonance UPLC-UV Chloramphenicol Methodological verification

Anisotropy flows in Pb-Pb collisions at LHC energies from parton scatterings with heavy quark trigger

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Nuclear Science and Techniques 2022年第2期33卷 14-20页

作者： hai Wang Jin-Hui Chen Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China

By implementing an additional heavy quark-antiquark pair production trigger in a multiphase transport(AMPT)model,we study the effect on anisotropy flows of identified particles with a focus on charged particles and quarkonium(J/ΨandΥ).A systematic increase in the collision rate for active partons in the AMPT model with such an implementation has been *** leads to a slight increase of identified particles anisotropy flows as a function of transverse momentum(pT)and rapidity,and gives a better description of the experimental data of elliptic flow toward larger *** approach provides an efficient way to study the heavy quark dynamics in the AMPT model at LHC energies.

关键词： Heavy-ion collision Quark-gluon plasma Quarkonium Collective flow

X-Ray Properties of the Point Source Population in the Spiral Galaxy NGC 5055 (M63) with Chandra

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Chinese Journal of Astronomy and Astrophysics 2007年第3期7卷 335-344页

作者： Bing Luo Ji-Yao Chen Zhong-Li Zhang Yu Wang Jing-Ying Wang hai-Guang Xu Department of Physics Fudan University Shanghai 200433 Department of Physics Shanghai Jiao Tong University Shanghai 200240

Using Chandra ACIS S3 data we studied the X-ray properties of low-and highmass X-ray binary populations in the nearby spiral galaxy NGC 5055. A total of 43 X-ray point sources were detected within two effective radii, with 31 sources located on the disk and the rest 12 sources in the bulge. The resolved point sources dominate the X-ray emission of the galaxy, accounting for about 80% of the total counts in 0.3-10keV. From spectral fittings we calculated the 0.3-10.0keV luminosities of all the detected X-ray point sources and found that they span a wide range from a few times 10^37 erg s^-1 to over 10^39 erg s^-1. After compensating for incompleteness at the low luminosity end, we found that the corrected XLF of the bulge population is well fitted with a broken power-law with a break at 1.57-0.20^＋0.21 1038 erg s^-1, while the profile of the disk population＇s XLF agrees with a single powerlaw distribution of slope 0 9-0.06^＋0.07 The disk population is significantly richer at ≥ 2 × 10^38 erg s^- 1 than the bulge population, indicating that the disk may have undergone relatively recent, strong starbursts that significantly increased the HMXB population, although ongoing starbursts are also observed in the nuclear region. Similar XLF profiles of the bulge and disk populations were found in M81. However, in most other spiral galaxies different patterns of spatial variation of the XLF profiles from the bulge to the disk have been observed, indicating that the star formation and evolution history may be more complex than we have expected.

关键词： galaxies individual (NGC 5055)-X-ray binaries-stars luminosity function-stars formation

Alkaloids from Stems of Ervatamia yunnanensis （Ⅱ）

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Chinese Chemical Letters 2006年第6期17卷 783-786页

作者： Shuang LIANG Xin Gen LUO hai Sheng CHEN Xiao Dong ZHANG Mao HUANG Wen Yong LIU College of Pharmacy Second Military Medical University Shanghai 200433 Deoartment of Pharmacy Guangzhou Military General Hospital Guangzhou 510010 Center of New Drug Evaluation Institute of Basic Medical Sciences Second Military Medical University Shanghai 200433

Six indole alkaloids were isolated from the stems of Ervatamia yunnanensis. Among them, 10-hydroxy-19, 20-dihydroisositsirikine （I） is new. The other five are known alkaloids, namely： matrine （Ⅱ）, 19, 20-dihydroisositsirikine （Ⅲ）, 19-s-voacangarine （Ⅳ）, 1 l＇-methoxyl-19s- heyneanine （Ⅴ）, conodurine （Ⅵ）. The structural elucidation of the alkaloids was based on spectral means.

关键词： Ervatamia yunnanensis indole alkaloids.

Test Homogeneity of Order-restricted Means

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Acta Mathematica Sinica,English Series 2010年第5期26卷 985-992页

作者： hai Bing ZHAO School of Statistics and Management Shanghai University of Finance and Economics Shanghai 200433 P. R. China

Suppose that an order restriction is imposed among several p-variate normal mean vectors. We are interested in testing the homogeneity of these mean vectors under this restriction. This problem is an extension of Sasa... 详细信息

关键词： multivariate normal distribution order restriction likelihood ratio test statistic

Helicopter maritime search area planning based on a minimum bounding rectangle and K-means clustering

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Chinese Journal of Aeronautics 2021年第2期34卷 554-562页

作者： Peisen XIONG Hu LIUa Yongliang TIAN Zikun CHEN Bin WANG Hao YANG School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China Dong hai No.2 Rescue Flying Service of The Ministry of Transport Xiamen 361006China

Helicopters are widely used in maritime Search and Rescue(SAR) missions. To ensure the success of SAR missions, search areas need to be carefully planned. With the development of computer technology and weather forecast technology, the survivors’ drift trajectories can be predicted more precisely, which strongly supports the planning of search areas for the rescue helicopter. However, the methods used to determine the search area based on the predicted drift trajectories are mainly derived from the continuous expansion of the area with the highest Probability of Containment(POC), which may lead to local optimal solutions and a decrease in the Probability of Success(POS), especially when there are several subareas with a high POC. To address this problem, this paper proposes a method based on a Minimum Bounding Rectangle and Kmeans clustering(MBRK). A silhouette coefficient is adopted to analyze the distribution of the survivors’ probable locations, which are divided into multiple clusters with K-means clustering. Then,probability maps are generated based on the minimum bounding rectangle of each cluster. By adding or subtracting one row or column of cells or shifting the planned search area, 12 search methods are used to generate the optimal search area starting from the cell with the highest POC in each probability map. Taking a real case as an example, the simulation experiment results show that the POS values obtained by the MBRK method are higher than those obtained by other methods,which proves that the MBRK method can effectively support the planning of search areas and that K-means clustering improves the POS of search plans.

关键词： K-means clustering Minimum bounding rectangle Mission planning Probability map Search and rescue

Liquid chromatography coupled with time-of-flight and ion trap mass spectrometry for qualitative analysis of herbal medicines

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Journal of Pharmaceutical Analysis 2011年第4期1卷 235-245页

作者： Xiao-Fei Chen hai-Tang Wu Guang-Guo Tan Zhen-Yu Zhu Yi-Feng Chai Department of Pharmaceutical Analysis School of Pharmacy Second Military Medical University Shanghai 200433 China Shanghai Key Laboratory for Pharmaceutical Metabolite Research Shanghai 200433 China

With the expansion of herbal medicine （HM） market, the issue on how to apply up-to- date analytical tools on qualitative analysis of HMs to assure their quality, safety and efficacy has been arousing great attention. Due to its inherent characteristics of accurate mass measurements and multiple stages analysis, the integrated strategy of liquid chromatography （LC） coupled with time-of-flight mass spectrometry （TOF-MS） and ion trap mass spectrometry （IT-MS） is well-suited to be performed as qualitative analysis tool in this field. The purpose of this review is to provide an overview on the potential of this integrated strategy, including the review of general features of LC-IT-MS and LC-TOF-MS, the advantages of their combination, the common procedures for structure elucidation, the potential of LC-hybrid-IT-TOF/MS and also the summary and discussion of the applications of the integrated strategy for HM qualitative analysis （2006-2011）. The advantages and future developments of LC coupled with IT and TOF-MS are highlighted.

关键词： High-performanceliquid chromatography(HPLC) Time-of-flight massspectrometry(TOF-MS) Ion trap massspectrometry (IT-MS) Herbal medicine (HM)