The main components of Artemisia leucophylla(Turcz.ex Bess.) C.B.Clarke extract are volatile oils,flavonoids,lignans,terpenoids,etc.Studies have shown that A.leucophylla has bactericidal,anti-inflammatory,anti-oxidant...The main components of Artemisia leucophylla(Turcz.ex Bess.) C.B.Clarke extract are volatile oils,flavonoids,lignans,terpenoids,etc.Studies have shown that A.leucophylla has bactericidal,anti-inflammatory,anti-oxidant,anti-ultraviolet functions,and it has large development space and application value in many fields.This paper first introduced the growth resource distribution,active component extraction method,composition and efficacy of A.leucophylla,and analyzed the application prospects in daily necessities,in order to provide reference for the in-depth research,development and utilization of A.leucophylla.展开更多
[Objective] The aim was to investigate the influence of different size of ground Cyanotis arachnoidea C.B.Clarke particles on the release of β-ecdysone.[Method] The content of β-ecdysone extracted from Cyanotis arac...[Objective] The aim was to investigate the influence of different size of ground Cyanotis arachnoidea C.B.Clarke particles on the release of β-ecdysone.[Method] The content of β-ecdysone extracted from Cyanotis arachnoidea powders of different sizes was detected through HPLC,under the chromatographic conditions：GRACE ODS C18 column（250 mm × 4.6 mm,5 μm）,mobile phase methanol：water= 40：60（V/V）,column temperature 26 ℃,flow rate 1.0 ml/min and detection wavelength 248 nm.[Result] The extracted β-ecdysone from ultra-fine Cyanotis arachnoidea powder（particle size 10,30 and 50 μm） was as more than two folds as common powder（particle size 180 μm）.[Conclusion] The β-ecdysone in ultra-fine powder of Cyanotis arachnoidea was more easily soluble in methanol.The extraction rate of β-ecdysone was significantly higher than that of common powder.The result showed that the technology of ultra-fine pulverization markedly improved the dissolution of the β-ecdysone for increasing the cell breakage rate,and then the active ingredients could be extracted more easily.展开更多
Modern detective novels are believed to have their roots in Sir Arthur Conan Doyle's Sherlock Holmes, when nearly fifty years prior Edgar Allen Poe had published one of the first murder mysteries in history. Altho...Modern detective novels are believed to have their roots in Sir Arthur Conan Doyle's Sherlock Holmes, when nearly fifty years prior Edgar Allen Poe had published one of the first murder mysteries in history. Although many years had elapsed little change had been made to the major elements of these detective stories. This essay explores the similarities of"Murders in the Rue Morgue"and"Hound of the Baskervilles".展开更多
对半蒴苣苔属（Hemiboea C.B.Clarke）植物半蒴苣苔（H.henryi C.B.Clarke）、贵州半蒴苣苔（H.cavaleriei H.Lév.）、疏脉半蒴苣苔（H.cavaleriei var.paucinervis W.T.Wang et Z.Y.Li ex Z.Y.Li）、华南半蒴苣苔（H.follicularis...对半蒴苣苔属（Hemiboea C.B.Clarke）植物半蒴苣苔（H.henryi C.B.Clarke）、贵州半蒴苣苔（H.cavaleriei H.Lév.）、疏脉半蒴苣苔（H.cavaleriei var.paucinervis W.T.Wang et Z.Y.Li ex Z.Y.Li）、华南半蒴苣苔（H.follicularis C.B.Clarke）和红苞半蒴苣苔（H.rubribracteata Z.Y.Li et Yan Liu）叶片的光合特性进行了分析和比较。结果表明：5种植物的光合参数及其日变化曲线、光响应参数〔（包括最大净光合速率（Pmax）、表观量子效率（AQY）、光补偿点（LCP）和光饱和点（LSP）〕、CO2响应参数〔包括CO2饱和净光合速率（CSPn）、羧化效率（CE）、CO2补偿点（CCP）和CO2饱和点（CSP）〕均有较大差异。半蒴苣苔、疏脉半蒴苣苔和红苞半蒴苣苔的净光合速率（Pn）日变化曲线均呈“单峰型”,而贵州半蒴苣苔和华南半蒴苣苔的Pn日变化曲线均呈“双峰型”且“午休”现象明显;贵州半蒴苣苔和疏脉半蒴苣苔的气孔导度（Gs）和蒸腾速率（Tr）日变化曲线均呈“单峰型”,而其他3种植物的Gs和Tr日变化曲线均类似“双峰型”;5种植物的胞间CO2浓度（Ci）日变化均呈先降后升的趋势;此外,5种植物的Pn与Gs均呈显著正相关、与Tr均呈正相关、与Ci均呈负相关。5种植物的光响应曲线和CO2响应曲线均有差异,但在光合有效辐射（PAR）低于200μmol·m^-2·s^-1环境CO2浓度（Ce）低于800μmol·moL^-1的条件下,它们的Pn均随PAR或Ce的升高急剧增加。5种植物中,贵州半蒴苣苔的Pmax最高,疏脉半蒴苣苔的CSPn最高;贵州半蒴苣苔的LCP最高（55.74μmol·m^-2·s^-1,其他4种的LCP均小于10μmol·m^-2·s^-1 5种植物的LSP均介于600-800μmol·m^-2·s^-1间,CCP介于50-150μmol·moL^-1之间,而CSP均在1 000μmol·moL^-1以上。研究结果揭示：供试5种植物均为阴生植物,但因产地生境及遗传特性差异使它们各自适应不同的光照条件,因而,在引种栽培过程中应根据各种类的光合特性采取适当的遮阳措施。展开更多
基金Supported by Project of National Natural Science Foundation of China(21503072)Project of China Scholarship Council(20163035)+2 种基金Project of Introduction of Return Talents(XDB-2017-19)Student’s Platform for Innovation and Entrepreneurship Training Program at State Level(201710223002)Guiding Science and Technology Program of Daqing City(ZD-2017-59)
文摘The main components of Artemisia leucophylla(Turcz.ex Bess.) C.B.Clarke extract are volatile oils,flavonoids,lignans,terpenoids,etc.Studies have shown that A.leucophylla has bactericidal,anti-inflammatory,anti-oxidant,anti-ultraviolet functions,and it has large development space and application value in many fields.This paper first introduced the growth resource distribution,active component extraction method,composition and efficacy of A.leucophylla,and analyzed the application prospects in daily necessities,in order to provide reference for the in-depth research,development and utilization of A.leucophylla.
基金Supported by Major Project for International Cooperation in Zhejiang(2009C14019)"948"Project of Ministry of Agriculture(2010-Z40)+3 种基金Major Project from Department of Education of Zhejiang(ZD2009009)Huzhou Major Science and Technology Project(2010ZD1002)the National Natural Science Foundation of China(20977027)Science and Technology Innovation Program for Under graduate Students in Zhejiang Province(2011R425009)~~
文摘[Objective] The aim was to investigate the influence of different size of ground Cyanotis arachnoidea C.B.Clarke particles on the release of β-ecdysone.[Method] The content of β-ecdysone extracted from Cyanotis arachnoidea powders of different sizes was detected through HPLC,under the chromatographic conditions：GRACE ODS C18 column（250 mm × 4.6 mm,5 μm）,mobile phase methanol：water= 40：60（V/V）,column temperature 26 ℃,flow rate 1.0 ml/min and detection wavelength 248 nm.[Result] The extracted β-ecdysone from ultra-fine Cyanotis arachnoidea powder（particle size 10,30 and 50 μm） was as more than two folds as common powder（particle size 180 μm）.[Conclusion] The β-ecdysone in ultra-fine powder of Cyanotis arachnoidea was more easily soluble in methanol.The extraction rate of β-ecdysone was significantly higher than that of common powder.The result showed that the technology of ultra-fine pulverization markedly improved the dissolution of the β-ecdysone for increasing the cell breakage rate,and then the active ingredients could be extracted more easily.
文摘Modern detective novels are believed to have their roots in Sir Arthur Conan Doyle's Sherlock Holmes, when nearly fifty years prior Edgar Allen Poe had published one of the first murder mysteries in history. Although many years had elapsed little change had been made to the major elements of these detective stories. This essay explores the similarities of"Murders in the Rue Morgue"and"Hound of the Baskervilles".
文摘对半蒴苣苔属（Hemiboea C.B.Clarke）植物半蒴苣苔（H.henryi C.B.Clarke）、贵州半蒴苣苔（H.cavaleriei H.Lév.）、疏脉半蒴苣苔（H.cavaleriei var.paucinervis W.T.Wang et Z.Y.Li ex Z.Y.Li）、华南半蒴苣苔（H.follicularis C.B.Clarke）和红苞半蒴苣苔（H.rubribracteata Z.Y.Li et Yan Liu）叶片的光合特性进行了分析和比较。结果表明：5种植物的光合参数及其日变化曲线、光响应参数〔（包括最大净光合速率（Pmax）、表观量子效率（AQY）、光补偿点（LCP）和光饱和点（LSP）〕、CO2响应参数〔包括CO2饱和净光合速率（CSPn）、羧化效率（CE）、CO2补偿点（CCP）和CO2饱和点（CSP）〕均有较大差异。半蒴苣苔、疏脉半蒴苣苔和红苞半蒴苣苔的净光合速率（Pn）日变化曲线均呈“单峰型”,而贵州半蒴苣苔和华南半蒴苣苔的Pn日变化曲线均呈“双峰型”且“午休”现象明显;贵州半蒴苣苔和疏脉半蒴苣苔的气孔导度（Gs）和蒸腾速率（Tr）日变化曲线均呈“单峰型”,而其他3种植物的Gs和Tr日变化曲线均类似“双峰型”;5种植物的胞间CO2浓度（Ci）日变化均呈先降后升的趋势;此外,5种植物的Pn与Gs均呈显著正相关、与Tr均呈正相关、与Ci均呈负相关。5种植物的光响应曲线和CO2响应曲线均有差异,但在光合有效辐射（PAR）低于200μmol·m^-2·s^-1环境CO2浓度（Ce）低于800μmol·moL^-1的条件下,它们的Pn均随PAR或Ce的升高急剧增加。5种植物中,贵州半蒴苣苔的Pmax最高,疏脉半蒴苣苔的CSPn最高;贵州半蒴苣苔的LCP最高（55.74μmol·m^-2·s^-1,其他4种的LCP均小于10μmol·m^-2·s^-1 5种植物的LSP均介于600-800μmol·m^-2·s^-1间,CCP介于50-150μmol·moL^-1之间,而CSP均在1 000μmol·moL^-1以上。研究结果揭示：供试5种植物均为阴生植物,但因产地生境及遗传特性差异使它们各自适应不同的光照条件,因而,在引种栽培过程中应根据各种类的光合特性采取适当的遮阳措施。
