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Effects of Gd^(3+) on Luminescence Properties of Eu^(3+) within Polymeric Structure in Aqueous Solutions

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Journal of Rare Earths 2001年第1期19卷 11-14页

作者：尹显洪史华红陈小明古练权 Zhongshan Univ Dept Chem Guangzhou 510275 Peoples R China Guangxi Univ Nationalities Dept Chem Nanning 530006 Peoples R China

?6′ tetracarboxy 4,4′ bipyridine was synthesized and the luminescence enhancement of their Eu 3+ complexes by Gd 3+ was observed. The results indicate that the mechanism of enhancement is based on the formation of a polymeric structure where Eu 3+ and Gd 3+ are linked together by the ligands, which favours the consequent transfer of absorbed energy along the polymeric chain through several ligands toward the Eu 3+ .

关键词： rare earths europium complex intramolecular energy transfer co luminescence

Phytochemical and pharmacological studies on Solanum lyratum:a review

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Natural Products and Bioprospecting 2022年第1期12卷 600-634页

作者： Yue Zhao Wen-Ke Gao Xiang-Dong Wang Li-hua Zhang Hai-Yang Yu hong-hua Wu State Key Laboratory of Component-Based Chinese Medicine Institute of Traditional Chinese MedicineTianjin University of Traditional Chinese Medicine10 Poyanghu RoadWest AreaTuanbo New TownJinghai DistrictTianjin 301617People’s Republic of China

Solanum lyratum is one of the temperate plants,broadly distributed in Korea,China,Japan,India,and South-East Asia and well-documented in those oriental ethnic medicine systems for curing cancers,jaundice,edema,gonorrhea,cholecystitis,phlogosis,rheumatoid arthritis,*** review systematically summarized the research progress on *** respecting the botany,traditional uses,phytochemistry,pharmacology,and toxicology to increase people’s in-depth understanding of this plant,by data retrieval in a series of online or off-line electronic databases as far as we can *** saponins and alkaloids,terpenoids,nitrogenous compounds,and flavonoid compounds are the main chemical constituents in *** them,steroidal alkaloids and saponins are the major active ingredi-ents ever found in ***,exerting activities of anti-cancer,anti-inflammation,anti-microbial,anti-allergy,and anti-oxidation in vivo or in *** a result,*** has been frequently prescribed for the abovementioned therapeutic purposes,and there are substantial traditional and modern shreds of evidence of its use.

关键词： Solanum lyratum Thunb. Steroidal saponins Steroidal alkaloids Anti-cancer Toxicity

The Lantian biota:A new window onto the origin and early evolution of multicellular organisms

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Science Bulletin 2013年第7期58卷 696-702页

作者： YUAN XunLai CHEN Zhe XIAO ShuHai WAN Bin GUAN ChengGuo WANG Wei ZHOU ChuanMing hua hong State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences Department of Geosciences Virginia Polytechnic Institute and State UniversityBlacksburg State Key Laboratory of Continental Dynamics and Department of Geology Northwest University

The Lantian biota at the Lantian Town of Xiuning County,Anhui Province,is preserved in black shales of the Ediacaran Lantian *** yields some of the oldest known complex macroorganisms,including fan-shaped seaweeds and possible animal fossils with tentacles and intestinal-like structures reminiscent of modern coelenterates and *** Lantian Lagerst tte sheds new light on the origin and early evolution of multicellular organisms in relatively quiet and deep environments soon after the Neoproterozoic Marinoan *** morphological complexity and diversity of early multicellular organisms may be closely related to sexual reproduction and alternation of *** fluctuation of oceanic redox conditions during this period may have played a role in the ecology and preservation of the Lantian biota.

关键词： Lantian biota Ediacaran multicellular organism origin and early evolution

Metabolic pathway databases and moot repositories

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Frontiers of Electrical and Electronic Engineering in China 2018年第1期6卷 30-39页

作者： Abraham A. Labena Yi-Zhou Gao Chuan Dong hong-li hua Feng-Biao Guo School of Life Science and Technology University of Electronic Science and Technology of China Chengdu 610054 China College of Computational and Naturay Sciences Dilla University Dilla P.O.box. 419 Et'hiopia School of Life Science and Technology Center for Informational Biology University of Electronic Science and Technology of China Chengdu 610054 China

Background： The number of biological Knowledge bases/databases storing metabolic pathway information and models has been growing rapidly. These resources are diverse in the type of information/data, the analytical tools, and objectives. Here we present a review of the most popular metabolic pathway databases and model repositories, focusing on their scope, content including reactions, enzymes, compounds, and genes, and applicability. The review aims to help researchers choose a suitable database or model repository according to the information and data required, by providing an insight look of each pathway resource. Results： Four pathways databases and three model repositories were selected on the basis of popularity and diversity. Our review showed that the pathway resources vary in many aspects, such as their scope, content, access to data and the tools. In addition, inconsistencies have been observed in nomenclature and representation of database entities. The three model repositories reviewed do not offer a brief description of the models＇ characteristics such as simulation conditions. Conclusions： The inconsistencies among the databases in representing their contents may hamper the maximal use of the knowledge accumulated in these databases in particular and the area of systems biology＇ at large. Therefore, it is strongly recommended that the database creators and the metabolic network models developers should follow international standards for the nomenclature of reactions and metabolites. Besides, computationally generated models that could be obtained from model repositories should be utilized with manual curations as they lack some important components that are necessary for full functionality of the models.

关键词： metabolic pathway database model repository

Synthesis, Structural Characterization and Magnetocaloric Effect of a Butterfly [CoⅡ2GdⅢ2] Cluster

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Chinese Journal of Structural Chemistry 2019年第7期38卷 1152-1158页

作者： LIU Tong huaNG Yuan-Mei ZOU hua-hong WANG Hai-Ling LIANG Fu-Pei State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources School of Chemistry & Pharmacy of Guangxi Normal University Guilin 541004 China Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin 541004 China

2-（2,3-Dihydroxpropyliminomethyl）6-methoxyphenol（H3L）, trimethylacetic acid（Hpiv）, Gd（NO3）3·6 H2O and Co（NO3）2·6 H2O were reacted in Me OH to obtain a heterometallic tetranuclear cluster [Gd2Co2（L）2（μ3-OH）2（piv）6]·2 Hpiv·2 CH3OH（1）. X-ray crystallographic analysis reveals that compound 1 was found to be a butterfly heterometallic tetranuclear cluster. The crystal(C64H108Co2Gd2N2O28, Mr = 1785.88) belongs to the triclinic crystal system, space group P1 with a =11.9798（6）, b = 12.0877（5）, c = 15.0367（7） ?, α = 67.320（4）°, β = 81.583（4）°, γ = 75.201（4）°, V =1939.62（18） ?3, Z = 1, T = 293.15 K, R = 0.048 and w R = 0.144 for 16299 observed reflections with I > 2σ（I）. In magnetization study, heterometallic 1 exhibits magnetocaloric effect（MCE） of 14.75 J·kg-1·K-1 at 2 K for ΔH = 5 T, while it does not show non-linear response of the ac-susceptibilities.

关键词： tetranuclear cluster heterometallic crystal structure magnetocaloric effect

Spectrofluorimetric Determination of Magnesium (Ⅱ) with 7-(8-Hydroxy-3, 6-Disulfonaphthylazo)-8-Hydroxyquinoline-5-Sulfonic Acid

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 831-835页

作者： Zhang Xian, Wang hong, Zhang hua shan College of Chemisitry and Molecular Science, Wuhan University, Wuhan 430072, China Wuhan University College of Chemistry and Molecular Science Wuhan China (GRID:grid.49470.3e) (ISNI:***)

A new fluorescent reagent, 7 (8 hydroxy 3, 6 disulfonaphthylazo) 8 hydroxyquinoline 5 sulfonic acid (HDNHQ) for the determination of magnesium has been developed. It reacted with magnesium to form a 1∶1 fluorescent complex with λ ex / λ em =356/495 nm immediately at room temperature in ammonia ammonium chloride buffer (pH 10.7). A linear relationship was obtained in the magnesium concentration range of 0 160 ng·mL -1 with the detection limit of 0.04 ng·mL -1 . The proposed method was simple, rapid and sensitive. It has been successfully applied to the determination of trace magnesium in blood serum with recoveries of 103.75% and 98.16%, respectively.

关键词： Hydroxy 3 6 disulfonaphthylazo) 8 hydroxyquinoline 5 sulfonic acid magnesium spectrofluorimetry blood serum

Synthesis of Isoquinoline-1, 3-Dicarboxylic Acid

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Chinese Chemical Letters 1999年第11期10卷 907-910页

作者： Xian hong YINI Man Ya YANG hua hong SHI Lian Quan GU(Chemistry Department, Zhongshan University. Guangzhou 510275)(Chemistry Department, Guangxin University for Nationalities, Nanning 530006) Zhongshan Univ Dept Chem Canton 510275 Peoples R China Guangxin Univ Natl Dept Chem Nanning 530006 Peoples R China

Two new compounds, isoquinoline-1, 3-dicarboxyaldehyde and (IDA) were synthesized via 6 or 7 steps starting from benzaldehyde, or prepared via 4 steps starting from allylbenzene.

关键词： Beckman rearrangement reaction intramolecular electrophilic substitution 1,3-dimethyl-isoquinoline derivatives

Synthesis of 3 or 4-Substituted Pyridine-2, 6-Dicarboxylic Acid

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Chinese Chemical Letters 1999年第11期10卷 903-906页

作者： Xian hong YIN Man Ya YANG hua hong SHI Lian Quan GU(Chemistry Department, Zhongshan University. Guangzhou 510275)(Chemistry Department, Guangxin University for Nationalities, Nanning 530006) Zhongshan Univ Dept Chem Canton 510275 Peoples R China Guangxin Univ Natl Dept Chem Nanning 530006 Peoples R China

Various 4-alkoxypyridine-2, 6-dicarboxylic acids were synthesized starting from 2, 6- lutidine. Through aldol condensation and Michael addition, various 4-arylpyridine-2, 6-dicarboxylic acids were synthesized starting... 详细信息

关键词： Michael reaction 2,6-lutidine analogues substituted pyridine-2,6-dicarboxylic acids

The Kiloparsec-scale Structure of 3C 286

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Chinese Journal of Astronomy and Astrophysics 2004年第1期4卷 28-36页

作者： Tao An, Xiao-Yu hong and Wei-hua WangShanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 []National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We present radio images of the compact steep spectrum (CSS) quasar 3C 286 acquired with the Very Large Array (VLA) at 8.4 and 22.5 GHz. The source exhibits a two-sided core-jet structure with a bright central component and two extended components one to the east (P.A. 100°) and another to the southwest (P.A. - 116°). From the compact core, an extension runs towards the southwest component up to - 0.7 arcsecond. The emission between the primary central component and the southwest component exhibits a knotty structure. A gradual change of the jet position angles from -135° to -120° in the inner southwest jet suggests a local bend. The position angle changes of the major eastern components E2 and El suggest that the eastern jet likely follows a curved trace. The bends in the jet trace may be associated with a relativistic precession or some interaction between the jet and the ambient matter. A mean spectral index of a22.58.4- 0.76 (Xv Va) is estimated for the core component. Steep spectra are also obtained for the extended southwest component (2.6', P.A. -116°) and eastern component (0.8', P.A. 100°), with a22.58.4-0.88 and a22.58.4-1.79, respectively. The radio morphologies and spectral index distributions suggest that the core seen in our images is likely to be the beamed inner jet while the real nucleus is dimmed by it beaming away from us.

关键词： galaxy: quasar: individual - radio continuum: VLA