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spectroscopic Measurements of Physiological Elements in Microdialysis Samples from Rat Brain,Flowering Plum Fruit and Pea

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Chinese Chemical Letters 1999年第3期10卷 243-246页

作者： Hut Min MA Zhi Hua WANG Yi ZENG Hut Wan HAN Guo Quan LIU(Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080) Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China

The basal levels of magnesium and copper in rat brain and flowering plum fruit dialysates, and the background concentration of calcium in pea dialysates have been determined with sensitive spectroscopic techniques including atomic absorption spectrometry and spectrophotometry based on amino G acid chlorophosphonazo. It is found that the magnesium level in flowering plum fruit dialysates is much lower than that in rat brain dialysates, indicating a considerable composition difference present between a plant dialysate and an animal one.

关键词： microdialysis spectroscopic methods physiological element analysis calcium magnesium copper

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Study of the continuum removal method for the Moon Mineralogy Mapper(M^3) and its application to Mare Humorum and Mare Nubium

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Research in Astronomy and Astrophysics 2016年第7期16卷 133-142页

作者： Xun-Yu Zhang Zi-Yuan Ouyang Xiao-Meng Zhang Yuan Chen Xiao Tang Ao-Ao Xu Ze-Sheng Tang Yun-Zhao Wu Space Science Institute Macao University of Science and Technology Macao 00853 China National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210023 China Key Laboratory of Planetary Sciences Chinese Academy of Sciences Nanjing 210008 China

The absorption band center of visible and near infrared reflectance spectra is a key spectral parameter for lunar mineralogical studies, especially for the mafic minerals（olivine and pyroxene） of mare basalts, which have two obvious absorption bands at 1000 nm（Band I） and 2000 nm（Band II）. Removal of the continuum from spectra, which was developed by Clark and Roush and used to isolate the particular absorption feature, is necessary to estimate this parameter. The Moon Mineralogy Mapper（M3） data are widely used for lunar mineral identification. However, M3 data show a residual thermal effect, which interferes with the continuum removal, and systematic differences exist among optical data taken during different optical periods. This study investigated a suitable continuum removal method and compared the difference between two sets of M3 data taken during different optical periods, Optical Period 1B（OP1B）and Optical Period 2A（OP2A）. Two programs for continuum removal are reported in this paper. Generally,a program respectively constructs two straight lines across Band I and Band II to remove the continuum,which is recommended for locating band centers, because it can find the same Band I center with different right endpoints. The optimal right endpoint for continuum removal is mainly dominated by two optical period data at approximately 2480 and 2560 nm for OP1 B and OP2 A data, respectively. The band center values derived from OP1 B data are smaller than those derived from OP2 A data in Band I but larger in Band II, especially for the spectra using longer right endpoints（〉2600 nm）. This may be due to the spectral slopes of OP1 B data being steeper than those of OP2 A data in Band I but gentler in Band II. These results were applied to Mare Humorum and Mare Nubium, and the measurements were found to mainly vary from intermediate- to high-Ca pyroxene.

关键词： techniques spectroscopic methods data analysis instrumentation spectrographs

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Two new phenolic compounds from Artemisia sphaerocephala

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Chinese Chemical Letters 2007年第5期18卷 551-553页

作者： Dong Bao Zhao Lin Xi Li Xiu Hua Liu Ming Jing Li Wen Ling Wang College of Chemistry and Chemical Engineering Henan University Kaifeng 475001 China Institute of Natural Products ＆ Medicine Chemistry Henan University Kaifeng 475001 China Xuchang General Cigarette Factory Xuchang 461000 China

Two new phenolic compounds were isolated from whole plant ofArtemisia sphaerocephala. The structures were elucidated on the basis of spectroscopic methods as 4-（1-hydroxylethyl）-phenol-l-O-β-D-glucopyranoside and 4... 详细信息

关键词： Artemisia sphaerocephala Phenolic spectroscopic methods

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Interaction of nitrogen-doped graphene quantum dots with HSA and its Hg2+ responsiveness recognition

Interaction of nitrogen-doped graphene quantum dots with HSA...

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中国化学会第七届全国热分析动力学与热动力学学术会议

作者： Yong-Chang Liu Li-Hui Wu Wen-Wen Ren Yan-Jun Hu Hubei Key Laboratory of Pollutant Analysis & Reuse Technology Department of ChemistryHubei Normal University

Nitrogen-doped graphene quantum dots(GQDs) exhibit low toxicity,superior solubility,chemical inertness,stable fluorescence and other properties,which make them show good prospects in optoelectronic devices,detectors,and biological *** serum albumin(HSA) is the most abundant protein in human plasma and can bind to many endogenous and exogenous compounds.A new GQDs was prepared by simple hydrothermal synthesis using citric acid as carbon source and glycine as nitrogen *** mechanism of interaction between GQDs and HSA and its responsiveness to Hg in HSA environment were studied by various spectroscopy methods and electrochemical *** gel electrophoresis method,the interaction between GQDs and HSA is visualized,which visually demonstrates the responsiveness of GQDs to Hg in the presence of *** study is expected to provide a meaningful reference for the research methods of quantum dots and biological macromolecules.

关键词： Nitrogen-doped spectroscopic methods gel electrophoresis imaging ion recognition human serum albumin

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Thermodynamics and Kinetics of the Interaction between Ronidazole and Human Serum Albumin

Thermodynamics and Kinetics of the Interaction between Ronid...

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第十六届全国化学热力学和热分析学术会议

作者： Wan-Ju Zhang~(1,2),Lu Lai~1,Fang Wang~2,Yi Liu~(*1) 1 State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biolgy and Medicine(MOE),College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072, P.R.China. 2 School of Chemical Engineering,Huanggang Normal University,Huanggang 438000,P.R.China.

＜正＞Ronidazole（RNZ） is widely used for the therapeutic treatment of farmed animals and is suspected of being human carcinogens and *** interaction between RNZ and human serum albumin（HSA） has been investigated s... 详细信息

关键词： Ronidazole Human serum albumin spectroscopic methods Molecular docking Interaction

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New Eremophilane Sesquiterpenes from Cacalia ainsliaeflora

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有机化学 2003年第Z1期23卷 450-450页

作者： Mao Man-Jun YANG Xiu-Ping JIA Zhong-Jian Department of Chemistry National Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 Department of Chemistry National Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 Department of Chemistry National Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000

　　Cacalia ainsliaeflora, a compositae distributed in the west of China, has long been used as Chinese traditional medicine for invigorating the circulation of blood, curing pellagra, rheumatismal edema and as an insecticide. [1] We recently reported the isolation and identification of five eremophilane sesquiterpenes from this plant. [2] In our continuing research on the bioactive constituents from Cacalia species, we reinvestigated the chemical constituents of the roots of C. ainsliaeflora. As a result, seven new eremophilane sesquiterpenes (2 ～ 8), and a known erempphilanolide (1) were isolated. Their structures were elucidated by spectroscopic methods.……

关键词： Cacalia ainsliaeflora eremophilane sesquiterpenes Chinese traditional medicine spectroscopic methods chemical constituents in the west of China identification of

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Novel Terpenoid Constituent from the Whole Plant of Lappula anocarpa C. J. Wang

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有机化学 2003年第Z1期23卷 6-6页

作者： JIN Yuan-Peng SHI Yan-Ping Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000

　　The genus Lappula (Boraginaceae) consists of about 61 species distributed throughout the world, particularly,in the dry and desert zone. Among them, L. myosotis and L. heteracantha have been used as an important folkmedicine for anti-inflammatory and anti-bacteria. [1,2] In order to find bioactive principles, the chemical constituents of Lappula anocarpa were investigated and a novel terpenoid 1, named lappulanocarpine, was isolated from the alcoholic extract ofthe whole plant. Its structure was characterized by means of various spectroscopic methods, including intensive 1D-NMR (1H NMR, 13C NMR, DEPT), 2D-NMR (gCOSY, gHMQC, gHMBC) and HR-ESIMS, as wellas IR and UV. Here we report the structure of the most interested lappulanocarpine (The 3D structure shown the configuration of two chiral carbons is A).……

关键词： spectroscopic methods chemical constituents Lappula anocarpa the world

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