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51.
52.
53.
Göran Fries 《BIT Numerical Mathematics》1975,15(4):394-400
The paper gives a definition of compatibility, and tries to answer the question why compatibility is of great importance. The paper also suggests a solution by using multilingual techniques in the creation of the complete system. 相似文献
54.
R. Brandelik W. Braunschweig H.-U. Martyn H.G. Sander D. Schmitz W. Sturm W. Wallraff D. Cords R. Felst R. Fries E. Gadermann H. Hultschig P. Joos W. Koch U. Kotz H. Krehbiel D. Kreinick S. Yamada 《Physics letters. [Part B]》1977,67(3):358-362
Charged hadron production via has been measured for s values between 13 and 25 GeV2. Inclusive cross sections and the evidence for scaling are presented. 相似文献
55.
56.
H.J. Behrend Ch. Chen H. Fenner J.H. Field V. Schr?der H. Sindt G. DAgostini W.D. Apel S. Banerjee J. Bodenkamp D. Chrobaczek J. Engler G. Flügge D.C. Fries W. Fues K. Gamerdinger G. Hopp F. Pierre 《Physics letters. [Part B]》1982,114(4):282-286
The e+e?→τ+τ? process has been measured using the CELLO detector at a mean total centre of mass energy of 34.2 GeV using essentially all the decay channels of the τ lepton. The measured cross section yields Rτ=1.03±0.05 (stat)±0.07 (syst). Topological branching fraction are given for τ → 1, 3 or 5 charged tracks. The angular distribution shows a clear 1 + cos2θ dependance with a forward-backward asymmetry of -0.103 ± 0.052 corresponding to an axial-vector coupling aτ of the τ to the weak neutral current given by aτ=?1.12 ± 0.57. 相似文献
57.
The first stable 2-germadisilaallene was synthesized by the reduction of a 2 ratio 1 mixture of a stable dialkylsilylene and dichlorogermylene-dioxane complex with KC8; the 2-germadisilaallene showed dynamic disorder similar to the corresponding trisilaallene in the solid state. 相似文献
58.
59.
T. Wöhrle P. Gómez-Romero T. Fries K. West M. R. Palacín N. Casañ-Pastor 《Ionics》1996,2(5-6):442-445
The lithium ionic conducting perovskite La0.57Li0.3TiO3 has been synthesised via a sol-gel method at a temperature of 700 °C. The crystallinity of the product can be greatly increased
by further heat treatment at 1000 °C. In this paper the product of the sol-gel synthesis is compared with the product of conventional
solid-state synthesis, and the influence of the synthesis method as well as of quenching on the crystal structure and ionic
conductivity has been studied. AC-impedance measurements show two contributions to the ionic conductivity, which can be adscribed
to intergranular and intragranular effects, respectively. A lower intergranular resistivity is observed for sol-gel samples,
while quenching mainly affects the materials prepared by solid-state reaction. The crystal structure of the material prepared
by the sol-gel method is identical to that of the material prepared by the solid state reaction, although the synthesis temperature
is nearly 600 °C lower. A tetragonal superstructure is observed when either type of material is slowly cooled from 1300 °C.
Quenching from the same temperature results in the suppression of that superstructure.
Paper presented at the 3rd Euroconference on Solid State Ionics, Teulada, Sardinia, Italy, Sept. 15–22, 1996 相似文献
60.
Bozsoki P Thomas P Kira M Hoyer W Meier T Koch SW Maschke K Varga I Stolz H 《Physical review letters》2006,97(22):227402
The method of angular photonic correlations of spontaneous emission is introduced as an experimental, purely optical scheme to characterize disorder in semiconductor nanostructures. The theoretical expression for the angular correlations is derived and numerically evaluated for a model system. The results demonstrate how the proposed experimental method yields direct information about the spatial distribution of the relevant states and thus on the disorder present in the system. 相似文献