The paper proposes a new tool to measure the risk in financial market:PaV,which means the hap pening probability with the given loss magnitude,and utilizes Copula function to obtain its computing algorithm.Two cases a...The paper proposes a new tool to measure the risk in financial market:PaV,which means the hap pening probability with the given loss magnitude,and utilizes Copula function to obtain its computing algorithm.Two cases are illustrated for the promising applications of PaV.展开更多
According to the published nucleotide sequences,CP gene of barley yellow dwarf virus PAV(BYDV-PAV) was synthesized by reverse transcription polymerase chain reaction(RT-PCR).The reporter gene GFP was put to the downst...According to the published nucleotide sequences,CP gene of barley yellow dwarf virus PAV(BYDV-PAV) was synthesized by reverse transcription polymerase chain reaction(RT-PCR).The reporter gene GFP was put to the downstream of whole CP gene sequence of BYDV-PAV after double enzyme digestion,PCR identification and sequencing.The green fluorescence protein expression system of coat protein of BYDV-PAV was successfully constructed and expressed in Escherichia coli BL21(DE3)plysS.The expression product was confirmed by SDS-PAGE,Western blot analysis and fluorescence microscope.The fusion gene CP-GFP was expressed in the range of 15-22℃,but could not be expressed at 23-37℃.The results provided a base for studying on BYDV-PAV movement in aphid further.展开更多
A series of new silicon-containing poly（p-arylene vinylene）s （PAVs） with anthracene units in the main chain were synthesized by hydrosilylation reaction. The introduction of organosilicon units improved the solubi...A series of new silicon-containing poly（p-arylene vinylene）s （PAVs） with anthracene units in the main chain were synthesized by hydrosilylation reaction. The introduction of organosilicon units improved the solubility of the polymers, and the π-π conjugation of polymeric chains was interrupted. These polymers behaved as blue-green light emitters with their fluorescence maximum at 447-499 nm and quantum yields in the range of 0.28-0.30 in solution.展开更多
文摘The paper proposes a new tool to measure the risk in financial market:PaV,which means the hap pening probability with the given loss magnitude,and utilizes Copula function to obtain its computing algorithm.Two cases are illustrated for the promising applications of PaV.
文摘According to the published nucleotide sequences,CP gene of barley yellow dwarf virus PAV(BYDV-PAV) was synthesized by reverse transcription polymerase chain reaction(RT-PCR).The reporter gene GFP was put to the downstream of whole CP gene sequence of BYDV-PAV after double enzyme digestion,PCR identification and sequencing.The green fluorescence protein expression system of coat protein of BYDV-PAV was successfully constructed and expressed in Escherichia coli BL21(DE3)plysS.The expression product was confirmed by SDS-PAGE,Western blot analysis and fluorescence microscope.The fusion gene CP-GFP was expressed in the range of 15-22℃,but could not be expressed at 23-37℃.The results provided a base for studying on BYDV-PAV movement in aphid further.
基金supported by the National Natural Science Foundation of China(Nos.50673094 and 20774102)
文摘A series of new silicon-containing poly（p-arylene vinylene）s （PAVs） with anthracene units in the main chain were synthesized by hydrosilylation reaction. The introduction of organosilicon units improved the solubility of the polymers, and the π-π conjugation of polymeric chains was interrupted. These polymers behaved as blue-green light emitters with their fluorescence maximum at 447-499 nm and quantum yields in the range of 0.28-0.30 in solution.
