Porous silica nanocapsules with 20% 3-aminopropyltrimethoxysilane (APS)-bound 6-carboxy-fluorescein (APS-fluorescein) and 80% APS molecules adsorbed on the surface
To study the property of the radiant spectrum(RS),i.e.absorption,reflectance and trans-mission ratio.Four upland rice varieties i.e.Haogelao,Hongkuo—laoshuya,Chengjiang—ludao,and IRAT—109,and four paddy ricevarieti...To study the property of the radiant spectrum(RS),i.e.absorption,reflectance and trans-mission ratio.Four upland rice varieties i.e.Haogelao,Hongkuo—laoshuya,Chengjiang—ludao,and IRAT—109,and four paddy ricevarieties Xifeng,Akihikari,Zhongbai 4,andYuefu were sown at Beijing on dry land in themiddle May,1992 and 1993.The plants weretreated with drought stress during seedling,booting,heading and flowering stages.It wasrainy season or intermittent irrigation duringother period.The RS and the chlorophyll con-tent of the third leave of seedlings and that offlag leave at heading—flowering period weremeasured with UV—190 model spectrometer.The results are shown in Fig 1 and Fig 2.There were little difference of RS in 800-200 mn and chlorophyll content between theleaves of paddy and upland rice during seedlingstage (Fig 1).However,remarkable differ-展开更多
An experimental study on TBL (turbulent boundary layer) pressure fluctuation frequeny spectrum of a revolution body is presented. With the measured results, a relation of convective frequency fo of the models is...An experimental study on TBL (turbulent boundary layer) pressure fluctuation frequeny spectrum of a revolution body is presented. With the measured results, a relation of convective frequency fo of the models is obtained. Relations of turbuleat wall-pressure fluctuation spectrum in transition region and development region to frequency and speed are obtained also展开更多
The ab initio calculation methods have been used to calculate the spectral and electronic characteristics of difluorocarbene in the ground electronic state(~1A_1),the lowest-lying singlet(~1B_1)and triplet(~3B_1)state...The ab initio calculation methods have been used to calculate the spectral and electronic characteristics of difluorocarbene in the ground electronic state(~1A_1),the lowest-lying singlet(~1B_1)and triplet(~3B_1)states,The optimized equilibrium geometries,rotational constants,harmonic vibrational frequencies and energy gaps,electronic charges,dipole moments of these states have been computed with different basis sets.The calculated vibrational frequency of ~3B_1 state(v_2=522 cm^(-1))and the energy separation(2.26eV)between ~3B_1 and ~1A_1 states are in good agreement with the experimental re- sults(519 cm^(-1),2.46 eV respectively).According to the calculations the previous assignment of vibrational symmetries of ~1B_1 state was corrected,and some experimentally undetermined vibrational frequencies were predicted.展开更多
基金supported by the Fujii-Otsuka International Scientific Exchange Fund from Tokushima University of Japan (795001002b)Furukawa Electronic Co., Ltd., and in part by NSFC (no. 30700151)+1 种基金Academic Innovation Incubation Program from UESTC (no. Y02018023601062)The data have been published in Journal of Colloid and Interface Science (2009, 331: 507-513)
文摘Porous silica nanocapsules with 20% 3-aminopropyltrimethoxysilane (APS)-bound 6-carboxy-fluorescein (APS-fluorescein) and 80% APS molecules adsorbed on the surface
文摘To study the property of the radiant spectrum(RS),i.e.absorption,reflectance and trans-mission ratio.Four upland rice varieties i.e.Haogelao,Hongkuo—laoshuya,Chengjiang—ludao,and IRAT—109,and four paddy ricevarieties Xifeng,Akihikari,Zhongbai 4,andYuefu were sown at Beijing on dry land in themiddle May,1992 and 1993.The plants weretreated with drought stress during seedling,booting,heading and flowering stages.It wasrainy season or intermittent irrigation duringother period.The RS and the chlorophyll con-tent of the third leave of seedlings and that offlag leave at heading—flowering period weremeasured with UV—190 model spectrometer.The results are shown in Fig 1 and Fig 2.There were little difference of RS in 800-200 mn and chlorophyll content between theleaves of paddy and upland rice during seedlingstage (Fig 1).However,remarkable differ-
文摘An experimental study on TBL (turbulent boundary layer) pressure fluctuation frequeny spectrum of a revolution body is presented. With the measured results, a relation of convective frequency fo of the models is obtained. Relations of turbuleat wall-pressure fluctuation spectrum in transition region and development region to frequency and speed are obtained also
文摘The ab initio calculation methods have been used to calculate the spectral and electronic characteristics of difluorocarbene in the ground electronic state(~1A_1),the lowest-lying singlet(~1B_1)and triplet(~3B_1)states,The optimized equilibrium geometries,rotational constants,harmonic vibrational frequencies and energy gaps,electronic charges,dipole moments of these states have been computed with different basis sets.The calculated vibrational frequency of ~3B_1 state(v_2=522 cm^(-1))and the energy separation(2.26eV)between ~3B_1 and ~1A_1 states are in good agreement with the experimental re- sults(519 cm^(-1),2.46 eV respectively).According to the calculations the previous assignment of vibrational symmetries of ~1B_1 state was corrected,and some experimentally undetermined vibrational frequencies were predicted.
