The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One spec...The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One species misidentification is corrected.A key to the males of Stenochironomus in China is given.展开更多
Macropiratidae Meyrick andAgdistopis sinhala （Fletcher, 1909） are recorded in China's Mainland for the first time with the description of the female of A. sinhala （Fletcher, 1909）. Photographs of the adult, wi...Macropiratidae Meyrick andAgdistopis sinhala （Fletcher, 1909） are recorded in China's Mainland for the first time with the description of the female of A. sinhala （Fletcher, 1909）. Photographs of the adult, wing venation and genitalia are provided.展开更多
Double-wavelength recording used in a pulsed digital micro-holographic system to record ultra-fast processing of the order of femto-second is reported for the first time, where a BBO crystal is used to generate harmon...Double-wavelength recording used in a pulsed digital micro-holographic system to record ultra-fast processing of the order of femto-second is reported for the first time, where a BBO crystal is used to generate harmonic wave of the incident laser wave, and both of the basic and the frequency doubled waves are time-delayed and introduced to a Michelson＇s interferometer to record two sub-holograms with different spatial frequencies on a single frame of a CCD. In the experiment, an ultrafast dynamic process of air ionization induced by a single femto-second laser pulse is recorded with holography by this system, and both of intensity and phase difference images digitally reconstructed are obtained through Fourier transformation and digital faltering, which show clearly the dynamic process of formation and propagation of the plasma, with a time resolution of the order of femto-second.展开更多
We collected nine Enteromorpha specimens from the coast of Yantai and evaluated their diversity based on analyses of their ITS(internal transcribed spacer) and 5S rDNA NTS(non-transcribed spacer) sequences.The ITS seq...We collected nine Enteromorpha specimens from the coast of Yantai and evaluated their diversity based on analyses of their ITS(internal transcribed spacer) and 5S rDNA NTS(non-transcribed spacer) sequences.The ITS sequences showed slight nucleotide divergences between Enteromorpha linza and Enteromorpha prolifera.In contrast,multiple highly variable regions were found in the ITS region of Enteromorpha flexuosa.In general,there were more variable sites in the NTS region than in the ITS region in the three species.The variations in 5S rDNA NTS sequences indicated that the molecular diversity of Enteromorpha from the coast of Yantai is very high.However,a phylogenetic tree constructed using 5S rDNA NTS sequence data indicated that genetic differences were not directly related to geographical distribution.展开更多
基金supported by the Zhejiang Provincial Natural Science Foundation of China (Y3100486)the National Natural Science Foundation of China (30570207, J0630963)Fauna of China (FY120100)
文摘The genus Stenochironomus from China,including 10 species,is reviewed.Three species,S.koreanus Borkent,S.maculatus Borkent,and S.totifuscus Sublette are re-described and recorded from China for the first time.One species misidentification is corrected.A key to the males of Stenochironomus in China is given.
基金supported by the National Natural Science Foundation of China (31071948)Fauna Sinica (31093430)
文摘Macropiratidae Meyrick andAgdistopis sinhala （Fletcher, 1909） are recorded in China's Mainland for the first time with the description of the female of A. sinhala （Fletcher, 1909）. Photographs of the adult, wing venation and genitalia are provided.
基金This work is financially supported by the National Natural Sci-ence Foundation of China (Grant No. 60377008)
文摘Double-wavelength recording used in a pulsed digital micro-holographic system to record ultra-fast processing of the order of femto-second is reported for the first time, where a BBO crystal is used to generate harmonic wave of the incident laser wave, and both of the basic and the frequency doubled waves are time-delayed and introduced to a Michelson＇s interferometer to record two sub-holograms with different spatial frequencies on a single frame of a CCD. In the experiment, an ultrafast dynamic process of air ionization induced by a single femto-second laser pulse is recorded with holography by this system, and both of intensity and phase difference images digitally reconstructed are obtained through Fourier transformation and digital faltering, which show clearly the dynamic process of formation and propagation of the plasma, with a time resolution of the order of femto-second.
基金Supported by the National Key Technology Research and Development Program(No.2008BA49B01)the Key Innovation Program of Chinese Academy of Sciences(No.KZCX2-YW-209)
文摘We collected nine Enteromorpha specimens from the coast of Yantai and evaluated their diversity based on analyses of their ITS(internal transcribed spacer) and 5S rDNA NTS(non-transcribed spacer) sequences.The ITS sequences showed slight nucleotide divergences between Enteromorpha linza and Enteromorpha prolifera.In contrast,multiple highly variable regions were found in the ITS region of Enteromorpha flexuosa.In general,there were more variable sites in the NTS region than in the ITS region in the three species.The variations in 5S rDNA NTS sequences indicated that the molecular diversity of Enteromorpha from the coast of Yantai is very high.However,a phylogenetic tree constructed using 5S rDNA NTS sequence data indicated that genetic differences were not directly related to geographical distribution.
