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p13 from group II baculoviruses is a killing-associated gene
( Nan Lu ),( En Qi Du ),( Yang Kun Liu ),( Hong Qiao ),( Lun Guang Yao ),( Zi Shu Pan ),( Song Ya Lu ),( Yi Peng Qi ) 생화학분자생물학회(구 한국생화학분자생물학회) 2012 BMB Reports Vol.45 No.12
p13 gene was first described in Leucania separata multinuclear polyhedrosis virus (Ls-p13) several years ago, but the function of P13 protein has not been experimentally investigated to date. In this article, we indicated that the expression of p13 from Heliothis armigera single nucleocapsid nucleopolyhedrovirus (Ha-p13) was regulated by both early and late promoter. Luciferase assay demonstrated that the activity of Ha-p13 promoter with hr4 enhancer was more than 100 times in heterologous Sf9 cells than that in nature host Hz-AM1 cells. Both Ls-P13 and Ha-P13 are transmembrane proteins. Confocal microscopic analysis showed that both mainly located in the cytoplasm membrane at 48 h. Results of RNA interference indicated that Ha-p13 was a killing-associated gene for host insects H. armigera. The AcMNPV acquired the mentioned killing activity and markedly accelerate the killing rate when expressing Ls-p13. In conclusion, p13 is a killing associated gene in both homologous and heterologous nucleopolyhedrovirus. [BMB Reports 2012; 45(12): 730-735]
The Three-wavelength PR<SUP>3+</SUP>:YLF Laser at 604 nm 607 nm and 640 nm with Fabry-Perot Etalon
Long Jin,Yu-Shi Jin,Yuan Dong,Qing-Song Li,Yong-Ji Yu,Shu-Tao Li,Guang-Yong Jin 한국광학회 2018 Current Optics and Photonics Vol.2 No.5
A three-wavelength Pr<SUP>3+</SUP>:YLF laser at 604 nm, 607 nm and 640 nm simultaneously output by Fabry-Perot (F-P) etalon has been obtained. A 444 nm blue laser diode is used for pumping the Pr<SUP>3+</SUP>:YLF crystal, and a 0.1 mm F-P etalon is inserted in the resonator to select wavelength. The theoretical model of three-wavelength Pr<SUP>3+</SUP>:YLF laser is established, by adjusting the tilt angle of the etalon, the transmittances of the different wavelengths can be controlled, and the threshold values can be made to equalize by controlling the loss among different wavelengths. In the experiment, when the tilt angle of etalon is 9° and the optimized length of resonator is 48 mm, the total output power of 25 mW at the three-wavelength is achieved at incident pump power of 7.5 W.
Study on anchorage effect on fractured rock
Jing Wang,Shucai Li,Li-Ping Li,Weishen Zhu,Qian-qing Zhang,Shu-Guang Song 국제구조공학회 2014 Steel and Composite Structures, An International J Vol.17 No.6
The effects of anchor on fractured specimens in splitting test are simulated by DDARF method, the results of which are compared with laboratory test results. They agree well with each other. The paper contents also use the laboratory model test. The main research objects are three kinds of specimens, namely intact specimens, jointed specimens and anchored-jointed specimens. The results showed that with the joint angle increased, the weakening effects of jointed rock mass are more obvious. At these points, the rock bolts' strengthening effects on the specimens have become more significant. There is a significant impact on the failure modes of rock mass by the joint and the anchorage.