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81.
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Abbott T Akiba Y Alburger D Beavis D Betts RR Birstein L Bloomer MA Bond PD Chasman C Chu YY Cole BA Costales JB Crawford HJ Cumming JB Debbe R Duek E Engelage J Fung SY Grodzins L Gushue S Hamagaki H Hansen O Hayashi S Homma S Huang HZ Ikeda Y Katcoff S Kaufman S Kimura K Kitamura K Kurita K Ledoux RJ Levine MJ Miake Y Morse RJ Nagamiya S Olness J Parsons CG Remsberg LP Sarabura M Shor A Stankus P Steadman SG Stephans GS Sugitate T Tannenbaum MJ Torikoshi M van Dijk JH Videbaek F Vient M 《Physical review letters》1990,64(8):847-850
84.
W.M. Cumming 《Fresenius' Journal of Analytical Chemistry》1925,66(4-5):173-174
Ohne Zusammenfassung 相似文献
85.
Earl M. Anger K. Schröder R. E. Lowe M. A. Mammen L. R. Taylor R. H. Griffith G. C. Holliday H. E. Roscoe F. Scudder H. Bunte E. Terres A. Mittasch W. M. Cumming W. Good und P. Budnikoff 《Fresenius' Journal of Analytical Chemistry》1929,78(7-8):305-315
Ohne Zusammenfassung 相似文献
86.
LB膜法制备Y2O3掺杂的CeO2超薄陶瓷膜的X光电子能谱(XPS)研究 总被引:1,自引:0,他引:1
利用LB膜技术发展了一种制备组分可控的超薄陶瓷膜的方法。以Ce,Y的β-二酮络合物作为表面离子,替代传统的亚相离子,制得混合LB膜。并将它作为前驱物成功制得了Y2O3掺杂的CeO2(YDC)超薄膜。XPS谱表明,膜中Ce与Y的含量比控制得很好。 相似文献
87.
Wang S Yuan T Walsby ED Blaikie RJ Durbin SM Cumming DR Xu J Zhang XC 《Optics letters》2002,27(13):1183-1185
Multilevel phase-shift Fresnel diffractive zone plates fabricated on silicon wafers have been used as T-ray imaging lenses. The imaging results, including spatial and temporal distribution of T-rays measured at the focal planes in the frequency range from 0.5 to 1.5 THz, indicate that the performance of the diffractive terahertz (THz) lens is comparable with or better than that of conventional refractive THz lenses. The unique properties of the T-ray binary lens make it possible to fabricate excellent optics for narrow-band THz applications. 相似文献
88.
Schatz H Aprahamian A Barnard V Bildsten L Cumming A Ouellette M Rauscher T Thielemann FK Wiescher M 《Physical review letters》2001,86(16):3471-3474
We calculate the rapid proton ( rp) capture process of hydrogen burning on the surface of an accreting neutron star with an updated reaction network that extends up to Xe, far beyond previous work. In both steady-state nuclear burning appropriate for rapidly accreting neutron stars (such as the magnetic polar caps of accreting x-ray pulsars) and unstable burning of type I x-ray bursts, we find that the rp process ends in a closed SnSbTe cycle. This prevents the synthesis of elements heavier than Te and has important consequences for x-ray burst profiles, the composition of accreting neutron stars, and potentially galactic nucleosynthesis of light p nuclei. 相似文献
89.
We present the simulation, implementation, and measurement of a polarization insensitive resonant metamaterial absorber in the terahertz region. The device consists of a metal/dielectric-spacer/metal structure allowing us to maximize absorption by varying the dielectric material and thickness and, hence, the effective electrical permittivity and magnetic permeability. Experimental absorption of 77% and 65% at 2.12 THz (in the operating frequency range of terahertz quantum cascade lasers) is observed for a spacer of polyimide or silicon dioxide respectively. These metamaterials are promising candidates as absorbing elements for thermally based terahertz imaging. 相似文献
90.
L Chausset-Boissarie R Àrvai GR Cumming L Guénée EP Kündig 《Organic & biomolecular chemistry》2012,10(32):6473-6479
The total syntheses of the Lythracea alkaloids (+)-vertine and (+)-lythrine are described. Enantioenriched pelletierine is used as a chiral building block and engaged into a two step pelletierine condensation leading to two quinolizidin-2-one diastereomers in a 8 : 1 ratio. The major product is used in the synthesis of (+)-vertine via aryl-aryl coupling and ring closing metathesis to provide a Z-alkene α to the lactone carbonyl function. The same procedure was used for (+)-lythrine after base induced epimerization of the main quinolizidin-2-one diastereomer. Alternative classical ring closure strategies like macrolactonisation or aryl-aryl coupling failed. 相似文献