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Now showing items 1 - 16 of 67

  • Application of Photocatalytic Oxidation Technology on Water Treatment

    Liu, Wan Yi   Zhang, Zhen Bin   Shen, Li   Chen, Rui Yang   Liu, Miao  

    TiO 2 catalyst is n-type semiconductor material. As long as the semiconductor absorbs photons of no less than the band gap width, it enters the excited state together with the formation of light-induced hole in the valence band simultaneously. It is perfectly capable of capturing electronic,and the photo-induced electron e- in the conduction band also has high activity to form a redox system in the semiconductor surface through which most of the organic pollutants and partial inorganic pollutants eventually degrade into innoxious substances. It describes the application of photocatalytic oxidation technology in the field such as treatment of industrial wastewater (inorganic polluted water; dye wastewater; papermaking wastewater; pesticide wastewater; oily wastewater) and drinking water. The research shows that various indexes (chromaticity; COD; mineralization rate; bacteria inactivation rate, etc.) of this technology in water treatment application have achieved the required standards.
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  • First total synthesis of two nematicidal prenylated flavanones

    Yang, Jin Hui   Jiang, Shi Zhi   Zhao, Yan Min   Li, Yun Feng   Ji, Cong Bin   Liu, Wan Yi  

    The total synthesis of (+/-)-8-(3-methylbut-2-enyl)-2-phenyl-2,3-dihydrochromen-4-one and (+/-)-2-(4-hydroxyphenyl)-8-(3-methylbut-2-enyl)-2,3-dihydrochromen-4-on e was first achieved through C-prenylation, protection of phenolic hydroxyl group, aldol condensation, cyclization and deprotection. starting from cheap benzaldehyde, 4-hydroxybenzaldehyde and 2-hydroxyacetophenone, with total yield of 20 and 16.3%. All structures of new compounds were confirmed by IR, (1)H NMR and MS. (C) 2009 Jin Hui Yang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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  • Computational Thermodynamics of Materials Zi-Kui Liu and Yi Wang

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  • Computational Thermodynamics of Materials Zi-Kui Liu and Yi Wang

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  • Efficient and green tetrahydropyranylation and deprotection of alcohols and phenols by using activated carbon supported sulfuric acid

    Yang, Jin Hui   Zhang, Xuan   Liu, Wan Yi  

    A simple, green and efficient method for the DHP protection of various alcohols and phenols and the subsequent removal of the corresponding protective group in the presence of a catalytic amount of the activated carbon supported H(2)SO(4) is described. (C) 2008 Jin Hui Yang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
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  • On Liu Yi\"s positive-negative root extraction algorithm

    Wang Rongbin  

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  • An aqueous extract of Liu Wei Di Huang Wan alters the labeling of blood constituents with Technetium-99m

    de Matos, Veronica Soares   do Carmo, Fernanda Santos   Diniz, Claudia Leite   Nascimento Ana, Lucia Rosa   Pereira, Marcia Oliveira   Fernandes Joelma, Fonseca de Oliveira   Santos-Filho, Sebastiao David   Moreno Silvana, Ramos Farias   Bernardo-Filho, Mario  

    The Liu Wei Di Huang Wan is a formula of a traditional Chinese medicine that is used to treat asthma patients and has been shown to have several important properties, such as antioxidant and free radical scavenging activities. The influence of an extract of Liu Wei Di Huang Wan on the labeling of blood constituents with technetium-99m was investigated. Anticoagulated blood (Wistar rats) was incubated with the extract, stannous chloride and technetium-99m, as sodium pertechnetate. Samples were centrifuged and aliquots of plasma and blood cells were separated and precipitated with trichloroacetic acid, to obtain soluble and insoluble fractions of the blood constituents. The percentage of radioactivity (%ATI) in all the fractions was determined. The analysis of the results shows that the extract at the highest concentration used (70 mg/mL) decreased significantly (P < 0.05) the %ATI (from 96.48 +/- 1.19 to 54.46 +/- 7.38) on blood cells compartment, (from 81.11 +/- 4.15 to 61.33 +/- 4.74) on insoluble fractions of blood cells and (from 65.91 +/- 2.44 to 13.15 +/- 3.62) on insoluble fractions of plasma. In conclusion, the results suggest that the substances present on this extract can alter this labeling process, probably due to (i) redox properties (antioxidant and chelator activities) and/or (ii) specific actions in the binding sites where the Tc-99m would be bound on the blood constituents. As a consequence, precaution is suggested on the interpretation of the nuclear medicine results from performed with blood constituents labeled with Tc-99m in patients that have undertaken LWDHW, although the current findings were obtained in experimental animal models.
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  • An aqueous extract of Liu Wei Di Huang Wan alters the labeling of blood constituents with Technetium-99m

    Ver?nica Soares de Matos   Fernanda Santos do Carmo…  

    The Liu Wei Di Huang Wan is a formula of a traditional Chinese medicine that is used to treat asthma patients and has been shown to have several important properties, such as antioxidant and free radical scavenging activities. The influence of an extract of Liu Wei Di Huang Wan on the labeling of blood constituents with technetium-99m was investigated. Anticoagulated blood (Wistar rats) was incubated with the extract, stannous chloride and technetium-99m, as sodium pertechnetate. Samples were centrifuged and aliquots of plasma and blood cells were separated and precipitated with trichloroacetic acid, to obtain soluble and insoluble fractions of the blood constituents. The percentage of radioactivity (%ATI) in all the fractions was determined. The analysis of the results shows that the extract at the highest concentration used (70 mg/mL) decreased significantly (P < 0.05) the %ATI (from 96.48 +/- 1.19 to 54.46 +/- 7.38) on blood cells compartment, (from 81.11 +/- 4.15 to 61.33 +/- 4.74) on insoluble fractions of blood cells and (from 65.91 +/- 2.44 to 13.15 +/- 3.62) on insoluble fractions of plasma. In conclusion, the results suggest that the substances present on this extract can alter this labeling process, probably due to (i) redox properties (antioxidant and chelator activities) and/or (ii) specific actions in the binding sites where the Tc-99m would be bound on the blood constituents. As a consequence, precaution is suggested on the interpretation of the nuclear medicine results from performed with blood constituents labeled with Tc-99m in patients that have undertaken LWDHW, although the current findings were obtained in experimental animal models.
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  • The Proof Is in the Diagram: Liu Yi and the Graphical Writing of Algebraic Equations in Eleventh-Century China

    Chemla, Karine  

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  • Immuno-enhancement effects of Huang Qi Liu Yi Tang in a murine model of cyclophosphamide-induced leucopenia

    Guan-Cheng Huang   Lien-Sheng Wu   Lih-Geeng Chen   Ling-Ling Yang    Ching-Chiung Wang  

    Tonic Chinese prescriptions are widely used in daily foods to improve health in Taiwan. Huang Qi Liu Yi Tang (HQLYT) is one such tonic Chinese prescription. In this study, the immuno-enhancement effects of HQLYT tonic were explored using an in vitro splenocyte proliferation assay and by evaluating improvements in cyclophosphamide-induced leucopenia in a BaLb/c mice model. HQLYT is composed of Radix Astragali, licorice, and jujube, and extracted in boiling water. The contents of glycyrrhizin and formononetin were used as bioactive markers to control the quality of the HQLYT water extract, at 7.26 ± 0.04 mg/g and 112.07 ± 0.08 μg/g, respectively. In the in vitro assay, HQLYT (12.5 μg/ml) showed better immuno-enhancing effects than Radix Astragali, licorice, or jujube alone, and enhanced the survival rate of splenocytes by 88%. Moreover, HQLYT significantly enhanced the cytotoxic effects of natural killer cells of splenocytes against YAC-1 cells.The BaLb/c mice were fed HQLYT once a day for 14 days. After oral treatment with HQLYT 400 mg/kg body weight (BW), the IL-2 release in BaLb/c mice and the natural killer cell activity of the splenocytes were both enhanced, and the WBC level of cyclophosphamide-induced leucopenic mice was improved by treatment with 400 mg HQLYT/kg BW. HQLYT significantly delayed the decline in the WBC level and affected a faster recovery of the WBC level back to a normal status. In summary, HQLYT enhanced immunologic functions in both in vitro and in vivo studies. These results offer scientific evidence to prove the efficacy of this tonic Chinese prescription.
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  • Immuno-enhancement effects of Huang Qi Liu Yi Tang in a murine model of cyclophosphamide-induced leucopenia

    Guan-Cheng Huang   Lien-Sheng Wu   Lih-Geeng Chen   Ling-Ling Yang   Ching-Chiung Wang  

    Tonic Chinese prescriptions are widely used in daily foods to improve health in Taiwan. Huang Qi Liu Yi Tang (HQLYT) is one such tonic Chinese prescription. In this study, the immuno-enhancement effects of HQLYT tonic were explored using an in vitro splenocyte proliferation assay and by evaluating improvements in cyclophosphamide-induced leucopenia in a BaLb/c mice model. HQLYT is composed of Radix Astragali, licorice, and jujube, and extracted in boiling water. The contents of glycyrrhizin and formononetin were used as bioactive markers to control the quality of the HQLYT water extract, at 7.26 ± 0.04 mg/g and 112.07 ± 0.08 μg/g, respectively. In the in vitro assay, HQLYT (12.5 μg/ml) showed better immuno-enhancing effects than Radix Astragali, licorice, or jujube alone, and enhanced the survival rate of splenocytes by 88%. Moreover, HQLYT significantly enhanced the cytotoxic effects of natural killer cells of splenocytes against YAC-1 cells.The BaLb/c mice were fed HQLYT once a day for 14 days. After oral treatment with HQLYT 400 mg/kg body weight (BW), the IL-2 release in BaLb/c mice and the natural killer cell activity of the splenocytes were both enhanced, and the WBC level of cyclophosphamide-induced leucopenic mice was improved by treatment with 400 mg HQLYT/kg BW. HQLYT significantly delayed the decline in the WBC level and affected a faster recovery of the WBC level back to a normal status. In summary, HQLYT enhanced immunologic functions in both in vitro and in vivo studies. These results offer scientific evidence to prove the efficacy of this tonic Chinese prescription.
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  • Immuno-enhancement effects of Huang Qi Liu Yi Tang in a murine model of cyclophosphamide-induced leucopenia.

    Huang, Guan-Cheng   Wu, Lien-Sheng   Chen, Lih-Geeng   Yang, Ling-Ling   Wang, Ching-Chiung  

    Tonic Chinese prescriptions are widely used in daily foods to improve health in Taiwan. Huang Qi Liu Yi Tang (HQLYT) is one such tonic Chinese prescription. In this study, the immuno-enhancement effects of HQLYT tonic were explored using an in vitro splenocyte proliferation assay and by evaluating improvements in cyclophosphamide-induced leucopenia in a BaLb/c mice model. HQLYT is composed of Radix Astragali, licorice, and jujube, and extracted in boiling water. The contents of glycyrrhizin and formononetin were used as bioactive markers to control the quality of the HQLYT water extract, at 7.26+/-0.04mg/g and 112.07+/-0.08 micro g/g, respectively. In the in vitro assay, HQLYT (12.5 micro g/ml) showed better immuno-enhancing effects than Radix Astragali, licorice, or jujube alone, and enhanced the survival rate of splenocytes by 88%. Moreover, HQLYT significantly enhanced the cytotoxic effects of natural killer cells of splenocytes against YAC-1 cells. The BaLb/c mice were fed HQLYT once a day for 14 days. After oral treatment with HQLYT 400mg/kg body weight (BW), the IL-2 release in BaLb/c mice and the natural killer cell activity of the splenocytes were both enhanced, and the WBC level of cyclophosphamide-induced leucopenic mice was improved by treatment with 400mg HQLYT/kgBW. HQLYT significantly delayed the decline in the WBC level and affected a faster recovery of the WBC level back to a normal status. In summary, HQLYT enhanced immunologic functions in both in vitro and in vivo studies. These results offer scientific evidence to prove the efficacy of this tonic Chinese prescription.
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  • 117 Development of a primary prototype of SXSES-DSS: S.J. Liu, C.Z. Han, B.W. Wan, pp 187–190

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  • 117 Development of a primary prototype of SXSES-DSS: S.J. Liu, C.Z. Han, B.W. Wan, pp 187–190

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  • Coaled Carbon-Based Solid Acid: a New and Efficient Catalyst for Click Synthesis of 3,4-Dihydropyrimidin-2(1H)-Ones under Solvent-Free Conditions

    Liu, Wan Yi   Liu, Ning   Zheng, Rui Yuan   Li, Bing   Zhang, Xia   Liang, Shi Jiao   Wang, Zheng  

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  • Birds and Mammals of Hainan Islandby L. Xu; Z. Liu; X. Yi

    Review by: James D. Lazell, Jr.  

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