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901.
Kiyoshi Ueda 《Applied Physics A: Materials Science & Processing》2008,92(3):487-494
This article describes Young’s double-slit experiment using high-energy core-level photoemission from N2 molecules and experimental identification of interatomic Coulombic decay in Ar2 dimers after Auger decay using k-resolved electron–ion–ion coincidence spectroscopy, aiming to illustrate the leading edge of gas-phase experiments using
synchrotron radiation. 相似文献
902.
WDM-Pulse-position modulation technique in SI-POF transmission is proposed to overcome the limitation from mode dispersion. It can expand the flat transmission bandwidth to 80MHz with 100m-fiber length. 相似文献
903.
Liquid-crystalline stereoregular polyketone prepared from a mesogenic vinylarene and carbon monoxide
Yasutoyo Kawashima Kyoko Nozaki Tamejiro Hiyama Masafumi Yoshio Kiyoshi Kanie Takashi Kato 《Journal of polymer science. Part A, Polymer chemistry》2003,41(22):3556-3563
Isotactic and syndiotactic polyketones were synthesized by the alternating copolymerizations of a mesogenic vinylarene, 4-cyano-4′-[8-(4-vinylphenyl)octyl-1-oxy]biphenyl, with carbon monoxide, and this revealed the influence of backbone tacticity on their thermal properties. The isotactic polyketone was an amorphous polymer that did not show any mesophase, whereas the syndiotactic polyketone exhibited liquid crystallinity. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 41: 3556–3563, 2003 相似文献
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906.
The correlation between the initiation and propagation of fatigue cracks and the substructure formation was examined using aluminium specimens. The effects of substructures introduced by static and alternating stresses and those of the recovery of the substructure on the propagation rates of fatigue cracks were also studied. Observations of the substructures were made by means of the X-ray micro-beam technique. The principal results obtained are as follows:
- At the time of fatigue crack initiation a definite substructure develops at the root of a notch made on the specimen edge.
- The rate of fatigue crack propagation has a relation to the characteristics of the substructures at the tip of the fatigue cracks.
- While the rates of propagation are retarded by static pre-strains, they increase in proportion to the degree of substructure formation due to alternating stresses.
- The rates are usually reduced by the recovery after alternating deformation.
907.
908.
909.
910.
The title tellurosilane reacted with esters and ethers in the presence of catalytic zinc iodide under very mild conditions, giving the corresponding products with C-telluration and O-silylation via nucleophilic cleavages of the CO bonds. 相似文献