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Chem Commun (Camb) ; 52(95): 13787-13790, 2016 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-27826608


Two unprecedented polytantalotungstates (POTTs), Cs16K16Na4[Ta18P12W90(OH)6(H2O)2O360]·24H2O (1) and Cs26K2H2[Yb2Ta18P12W90(OH)6(H2O)16O360]·52H2O (2) based on the largest {Ta18} and {Ta18Yb2} clusters, respectively, were hydrothermally synthesized. A photocatalytic study revealed that 1 and 2 exhibit significant ultraviolet photocatalytic water splitting activity.

Zhongguo Zhong Yao Za Zhi ; 33(8): 884-8, 2008 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-18619343


OBJECTIVE: To establish the processing method of fructus evodiae and its standard for quality control, toxicity aspects and pharmacodynamics were carried out at the same time. METHOD: In the studies of processing techniques, the optimized technical parameters were determined by the contents of evodiamine and evodine. And the acute toxicity and pharmacodynamics were studied by rats. RESULT: The process was that the liquorice-processed fructus evodiae was wetted by liquorice decoction by sixth of raw fructus evodiae (V/W) and fried below 230 degrees C. The method of detecting the contents of evodiamine and evodine was that Alltima ODS C18 (4.6 mm x 250 mm, 5 microm); mobile phase acetonitrile-water-tetrahydrofuran-phosphoric acid (51:48: 1: 0.05); column temperature 25 degrees C; mobile rate 0.8 mL x min(-1); wave length 225 nm. The toxicity experimentation show that rats didnt show any notable changes after affused the raw material and the processed fructus evodiae's decotion 40 g x kg(-1) b. w. at one time seven days constantly. The analgesic effect was observed after 0.6 g (material) x kg(-1) (weight) b. w. CONCLUSION: The toxicity of the raw material and the processed one were low and the liquorice-processed fructus evodia analgesic effect was good.

Glycyrrhiza/química , Rutaceae/química , Analgésicos/isolamento & purificação , Analgésicos/farmacologia , Analgésicos/uso terapêutico , Analgésicos/toxicidade , Animais , Cromatografia , Medicamentos de Ervas Chinesas/isolamento & purificação , Medicamentos de Ervas Chinesas/farmacologia , Medicamentos de Ervas Chinesas/uso terapêutico , Medicamentos de Ervas Chinesas/toxicidade , Feminino , Modelos Lineares , Masculino , Camundongos , Camundongos Endogâmicos ICR , Dor/tratamento farmacológico , Reprodutibilidade dos Testes , Temperatura
Zhongguo Zhong Yao Za Zhi ; 32(12): 1149-54, 2007 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-17802873


OBJECTIVE: To investigate the equivalent relationship between granule for clinical prescription and clincal decoction by use of fructus evodiae as a demonstrated object. METHOD: Compared the equivalent ratio relationship of granule for clincal prescription and clincal decoction by determination of evodiamine, rutaecarpine, evodine, total alkaloids and dried extract ratio as markers, ten batches reference decoctions were prepared according to clinical usage as evaluation standards, common-use processed fructus evodiae products, such as salt-processed fructus evodiae, liquorice-proccesed fructus evodiae, as researching objects, and finally validated by pharmacological trials. RESULT: Equivalent ratios of granule for clical prescription to clincal decoction are about two in all processed products, and the pharmacological evaluation showed no siginificant difference in this ratio. CONCLUSION: This equivalent ratio model could be referenced in the production. But, it must be noticed that different herbal medicines perhaps have different equivalent ratio, which should be studied further according to its techniques and production conditions, and finally need to be revalidated by clinical trial.

Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Evodia/química , Limiar da Dor/efeitos dos fármacos , Alcaloides/análise , Animais , Medicamentos de Ervas Chinesas/isolamento & purificação , Feminino , Frutas/química , Temperatura Alta , Alcaloides Indólicos/análise , Masculino , Camundongos , Camundongos Endogâmicos ICR , Extratos Vegetais/análise , Plantas Medicinais/química , Quinazolinas/análise , Tecnologia Farmacêutica/métodos
Artigo em Chinês | MEDLINE | ID: mdl-15281455


OBJECTIVE: To observe the ultrastructure of pharyngeal armature of 7 species of sandflies in China. METHODS: The pharyngeal armature of various sandflies were studied by scanning electron microscopy. RESULTS: The pharyngeal armature of sandfly consisted of pointed-teeth with various shape, number and arrangement among different species. CONCLUSION: Such differences may provide the morphological proof for identification of species.

Faringe/ultraestrutura , Psychodidae/classificação , Psychodidae/ultraestrutura , Animais , Feminino , Microscopia Eletrônica de Varredura
Artigo em Chinês | MEDLINE | ID: mdl-15830857


OBJECTIVE: To observe the effect of Phlebotomus chinensis control including insecticide residual spraying in the habitats and bathing for dogs on the transmission of visceral leishmaniasis in Nanping of Sichuan Province. METHODS: Alpha-methrin with a dosage of 50 mg/m2 was sprayed in the wild caves and 2.5% deltamethrin wettable power at a concentration of 250 mg/L was applied for dog bathing in the villages. The density of sandflies in the natural caves was examined and data on the incidence of visceral leishmaniasis were collected from epidemiological survey following the sandfly control measures. RESULTS: The density of sandflies has been considerably reduced after the chemical spraying in caves, the important habitats of the sandflies. By both the cave spraying and bathing for dogs since 1993, the reported human cases of leishmaniasis also decreased. CONCLUSION: Measures for sandfly control including insecticide spraying in the habitats and bathing for dogs with insecticide solution can significantly reduce the sandfly density, and can contain the transmission of visceral leishmaniasis in the endemic area.

Doenças do Cão/prevenção & controle , Controle de Insetos , Leishmaniose Visceral/transmissão , Leishmaniose Visceral/veterinária , Psychodidae/fisiologia , Adolescente , Adulto , Animais , Criança , Pré-Escolar , Reservatórios de Doenças , Doenças do Cão/parasitologia , Doenças do Cão/transmissão , Cães , Humanos , Lactente , Insetos Vetores/parasitologia , Inseticidas , Leishmaniose Visceral/prevenção & controle , Pessoa de Meia-Idade , Nitrilas , Piretrinas