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Two New Aporphine Alkaliods from Fissistigma bracteolatum

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Chinese Chemical Letters 2002年第9期13卷 862-864页

作者： Yu DeNG Jin CHeN Feng e wu Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041

1,2-methylenedioxy-9-methoxy-N-methoxycarbonyl-aporphine and 1,2-methylenedioxy -8,9-dimethoxy-N-methoxycarbonyl-aporphine, two new alkaloids possessing a N-(methoxy carbonyl) group have been isolated from the stems o... 详细信息

关键词： Fissistigma bracteolatum aporphine 1,2-methylenedioxy-9-methoxy-N-methoxy car- bonyl-aporphine 1,2-methylenedioxy -8,9-dimethoxy-N-methoxycarbonyl-aporphine.

Two New Pentacyclic Triterpenes from Sabia parviflora

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Chinese Chemical Letters 2002年第4期13卷 345-348页

作者： Jin CHeN Bin CHeN Jun TIAN Feng e wu Laboratory of Natural Materia Medica Chengdu Institute of BiologyAcademia SinicaChengdu 610041

Two new pentacyclic triterpene acids, 1a, 3b-dihydroxyl-olean-12-en-28-oic acid and 1a, 2a, 3b-trihydroxyl-olean-12-en-28-oic acid, were isolated from the arial parts of Sabia parviflora.

关键词： Sabia parviflora pentacyclic triterpene acid 1α, 3b-dihydroxyl-olean-12-en-28-oic acid 1a, 2a, 3b-trihydroxyl-olean-12-en-28-oic acid.

A New Benzylisoquinoline Alkaloid from Sabia parviflora

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Chinese Chemical Letters 2002年第5期13卷 426-427页

作者： Jin CHeN Bin CHeN Jun TIAN Feng e wu Laboratory of Natural Materia Medica Chengdu Institute of BiologyAcademia SinicaChengdu 610041

A new benzylisoquinoline alkaloid, 1, 2, 3, 4-tetrahydro-5-hydroxyl-8-methoxyl-2- methyl-4'-methoxyl-benzylisoquinoline, was isolated from the arial parts of Sabia parviflora. Its structure was established on the bas... 详细信息

关键词： Sabia parviflora benzylisoquinoline alkaloid 1, 2, 3, 4-tetrahydro-5-hydroxyl-8- methoxyl-2-methyl-4'-methoxyl-benzylisoquinoline.

APPLICATION OF NUMeRICAL SIMULATION TO STUDY ON THeRMAL CONDUCTION

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Acta Metallurgica Sinica(english Letters) 2004年第1期17卷 16-20页

作者： C.Zhu Z.Xu D.e.wu Tianjin University Tianjin 300074China School of SciencesCivil Aviation University of ChinaTianjin 300300ChinaSchool of SciencesCivil Aviation University of China.Tianjin 300300ChinaSchool of SciencesCivil Aviation University of China.Tianjin 300300China

In this paper, using computer simulation and mathematic experiment method to solve the simplified one dimensional thermal conduction equation and to obtain the temperature distribution in a metal bar when its one end was heated. According to principle of hot expansion, a holograph of temperature distribution in the bar by laser holo-technique was taken. The results of numerical simulation and experiments are in good agreement and a new method for study on thermal conduction by laser holo-technique was found.

关键词： metal bar thermal conduction equation computer simulation holograph

First Total Synthesis of Cleroindicin B,(±) Cleroindicin C and e

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Chinese Chemical Letters 2001年第9期12卷 771-774页

作者： Jin CHeN Jun TIAN Feng e wu Norio Kawabe Masahiko Tokuda Laboratory of Natural Materia Medica Chengdu Institute of Biologythe Chinese Academy of SciencesChengdu 610041 Basic Research Laboratories Toray IndustriesInc..Tebiro 1111.KamakuraKanagawa 248Japan

Cleroindicin B, C and e, three new natural products originally isolated from Clerodendrum indicum, have been synthesized (in racemic forms for Cleroindicin C and e) by a facile route, starting from 2-(p-methoxy-phenyl... 详细信息

关键词： Cleroindicin B cleroindicin C cleroindicin e enantioselective inclusion methodology.

effect of sodium alginate-based hydrogel loaded with lutein on gut microbiota and inflammatory response in DSS-induced colitis mice

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Food Science and Human Wellness 2023年第6期12卷 2428-2439页

作者： Pengxiang Xu Shuwei Luo Jiangfeng Song Zhuqing Dai Dajing Li Cai’e wu Institute of Agro-product Processing Jiangsu Academy of Agricultural SciencesNanjing 210014China College of Light Industry and Food engineering Nanjing Forestry UniversityNanjing 210037China

In order to effectively deliver lutein to the inflamed colon and better exert its pharmacological activity,this paper constructed a sodium alginate hydrogel-based delivery system loaded with lutein nanoparticles,evaluated the regulation on the expression and secretion of related inflammatory factors in mice with colitis,and its impact on intestinal microbial *** results showed that comparing lutein crystal and its nanoparticle,lutein hydrogel alleviated dextran sodium sulfate(DSS)-induced colitis in mice more effectively by adjusting fecal heme content,colon tissue damage,and inflammatory factor ***,lutein hydrogel increased the expression of intestinal tight junction proteins zonula occluden-1(ZO-1),claudin-1 and occludin to maintain the integrity of the intestinal-barrier,inhibited the nuclear factor-κB(NF-κB)pathway and reduced expression and secretion of inflammatory factors including tumour necrosis factor-α(TNF-α),inducible nitric oxide synthase(iNOS),NOD-like receptors 3(NLRP3)and interleukin(IL)-1β.In addition,the intestinal microbial environment of mice with colitis was improved by down-regulating the relative abundance of Desulfovibrionaceae and up-regulating the relative abundance of erysipelotrichaceae and *** a slow-release carrier to load lutein nanoparticles,sodium alginate-based hydrogel has potential application prospect.

关键词： Lutein Hydrogel Colitis Intestinal microbiota Inflammation regulation

Direct Measurement of Non-Classical Photon Statistics with a Multi-Pixel Photon Counter

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Journal of electronic Science and Technology 2019年第3期17卷 204-212页

作者： Cheng-Jie Ding You-Ying Rong Yu Chen Xiu-Liang Chen e wu State Key Laboratory of Precision Spectroscopy East China Normal University

Photon number resolving detectors with high accuracy bring broad applications in long-distance laser ranging, ultrafast spectroscopy, and quantum optics. In this paper, we observed the non-classical photon number distribution directly with a multi-pixel photon counter (MPPC) instead of a classic Hanbury-Brown and Twiss (HBT) system. The detector’s photon-number resolving ability was characterized by quantum detector tomography. To show the quantum feature of the detector, we further plotted the Wigner function, which was obtained corresponding to the positive operator value measure (POVM) elements. Finally, we declared the observation of non-classical photon statistics from a single color center in nanodiamond by using this detector.

关键词： Photon counting photon statistics quantum detector quantum optics

Dasycarine, a New Quinoline Alkaloid from Dictamnus dasycarpus

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Chinese Chemical Letters 2000年第8期11卷 707-708页

作者： Jin CHeN Jing Sheng TANG Jun TIAN You Ping WANG Feng e wu Laboratory of Natural Materia Medica Chengdu Institute of BiologyAcademia SinicaChengdu 610041 Department of Biology Sichuan UniversityChengdu 610064

Dasycarine, a new quinoline alkaloid along with five known compounds, dictamine, dihydroobacunone, obacunone, fraxinellone and beta-sitosterol, were isolated from Dictamnus dasycarpus. The structure of dasycarine was ... 详细信息

关键词： Dictamnus dasycarpus Rutaceae alkaloids dasycarine

Near-Range Large Field-of-View Three-Dimensional Photon-Counting Imaging with a Single-Pixel Si-Avalanche Photodiode

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Chinese Physics Letters 2018年第11期35卷 38-41页

作者： Guang-Yue Shen Tian-Xiang Zheng Bing-Cheng Du Yang Lv e wu Zhao-Hui Li Guang wu State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062 Collaborative Innovation Center of extreme Optics Shanxi UniversityTaiyuanShanxi 030006

Large field-of-view（FoV） three-dimensional（3 D） photon-counting imaging is demonstrated with a single-pixel single-photon detector based on a Geiger-mode Si-avalanche photodiode. By removing the collecting lens（CL）before the detector, the FoV is expanded to ±10°. Thanks to the high detection efficiency, the signal-to-noise ratio of the imaging system is as high as 7.8 dB even without the CL when the average output laser pulse energy is about 0.45 pJ/pulse for imaging the targets at a distance of 5 m. A 3 D image overlaid with the reflectivity data is obtained according to the photon-counting time-of-flight measurement and the return photon intensity.

关键词： Near-Range Large Field-of-View Three-Dimensional Photon-Counting Imaging with a Single-Pixel Si-Avalanche Photodiode Si