60 resultados para Prime
em Chinese Academy of Sciences Institutional Repositories Grid Portal
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VegaPrime Visual C++.NET 2003 /
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Pulsed laser beam was used to modify surface processing for ductile iron. The microstructures of processed specimen were observed using optical microscope (OM). Nanoindentation and micro-hardness of microstructures were measured from surface to inner of sample. The experimental results show that, modification zone is consisted of light melted zone, phase transformation hardening area and transient area. The light melt area is made up of coarse dendrite crystalline with a thickness less than 20um, phase transformation hardening area mainly of laminal or acicular martensite, retained austenite and graphite, i.e. M+A prime+ G. The cow-eye microstructure around graphite sphere always is formed in phase transformation hardening area zone, which consisting of a variety structure with the distance from the surface. So, it maybe as a obvious sign distinguishing modification zone border. Finally, the microstructures evolution of laser pulse processed ductile iron was analyzed coupling with beam energy distribution in space and laser pulse heating procession characteristics. The analysis shows that energy distribution of laser pulse has an important effect on microstructure during laser pulse modified ductile iron. Multi-scale and interlace arrangement are the important features for laser pulse modified ductile iron. Of microstructure.
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The number of phase levels of a Talbot array illuminator is an important factor in the estimation of practical fabrication complexity and cost. We show that the number it) of phase levels of a Talbot array illuminator has a simple relationship to the prime number. When there is an alternative pi -phase modulation in the output array, the relations are similar. (C) 2001 Optical Society of America OCIS codes: 070.6760, 050.1950, 050.1980.
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The Talbot effect is one of the most basic optical phenomena that has received extensive investigations both because its new results provide us more understanding of the fundamental Fresnel diffraction and also because of its wide applications. We summarize our recent results on this subject. Symmetry of the Talbot effect, which was reported in Optics Communications in 1995, is now realized as the key to reveal other rules for explanation of the Talbot effect for array illumination. The regularly rearranged-neighboring-phase-differences (RRNPD) rule, a completely new set of analytic phase equations (Applied Optics, 1999), and the prime-number decomposing rule (Applied Optics, 2001) are the newly obtained results that reflect the symmetry of the Talbot effect in essence. We also reported our results on the applications of the Talbot effect. Talbot phase codes are the orthogonal codes that can be used for phase coding of holographic storage. A new optical scanner based on the phase codes for Talbot array illumination has unique advantages. Furthermore, a novel two-layered multifunctional computer-generated hologram based on the fractional Talbot effect was proposed and implemented (Optics Letters, 2003). We believe that these new results should bring us more new understanding of the Talbot effect and help us to design novel optical devices that should benefit practical applications. (C) 2004 Society of Photo-Optical Instrumentation Engineers.
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This paper summarized the recent research results of Changhe Zhou's group of Information Optics Lab in Shanghai Institute of Optics and Fine Mechanics (SIOM). The first is about the Talbot self-imaging research. We have found the symmetry rule, the regular-rearranged neighboring phase difference rule and the prime-number decamping rule, which is briefly summarized in a recent educational publication of Optics and Photonics News, pp.46-50, November 2004. The second is about four novel microoptical gratings designed and fabricated in SIOM. The third is about the design and fabrication of novel supperresolution phase plates for beam shaping and possible use in optical storage. The fourth is to develop novel femtosecond laser information processing techniques by incorporating microoptical elements, for example, use of a pair of reflective Dammann gratings for splitting the femtosecond laser pulses. The most attractive feature of this approach is that the conventional beam splitter is avoided. The conventional beam splitter would introduce the unequal dispersion due to the broadband spectrum of ultrashort laser pulses, which will affect the splitting result. We implemented the Dammann splitting apparatus by using two-layered reflective Dammann gratings, which generates the almost same array without angular dispersion. We believe that our device is highly interesting for splitting femtosecond laser pulses.
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Sr^2QBBO001-BBO810300rminBBOCFWHM6766-BBOBBO
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,GC-ECDHCH()DDT().:HCHDDT,∑HCHs0.18~18.90 ng.g-1,1.97 ng.g-1,∑DDTs1.82~165.34 ng.g-1,31.41 ng.g-1;p,p′-DDEp,p′-DDDp,p′-DDT.∑DDTs.HCHDDT
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(RP-HPLC)———,819a19′-caabbaaβ-;19′-
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(Nostoc flagelli forme Bornet & Flahault),,,(ΔF/F′m),(PAR,395—700nm)(UVR,280—395nm)ΔF/F′m1,PARUVRΔF/F′m54%13%;,ΔF/F′mUVR2
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,13,(SSCP):6,253′,,,,
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RACE-PCRM(immunoglobulin M,IgM)cDNAcDNA1 940nt,5′20nt,3′189nt,1 731nt,576IgM68%,61%43%33%30%ClustalX:IgM,IgMIgMP
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,(:108°98′,34°25′;:114°34′,30°57′)(Carchesium polypinum),(WH)(36)(XA)33,;PCRHsp70mRNA,XAHsp70mRNA28,WH3
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,.S6K15′,PCR,30S6K1DNA(1,21),,(NJ)(MP)(ML)(Bayesian).(Myxocyprinus asiaticus),4,
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(Pelteobagrus nitidus)(Pelteobagrus eupogon),PCRDNA DN43′tRNA772,MEGA2.1,Kimura,(Hemibagrus macropterus),0.000—0.012,
