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41.
G.W. Brandenburg W.B. Johnson D.W.G.S. Leith J.S. Loos J.A.J. Matthews F.C. Winkelmann R.J. Yamartino 《Physics letters. [Part B]》1973,44(3):305-309
Differential cross sections for center of mass scattering angles near 90° are presented for the reactions , and KL°p → KS°p in the momentum interval 1.0 to 7.5 GeV/c. The energy dependences of these cross sections are found to be equally well described by the parameterization: or . 相似文献
42.
43.
Y. Sugita C. Winkelmann V. La Saponara L. Cheng 《Mechanics of Composite Materials》2011,47(3):313-322
The degradation of mechanical properties and the moisture absorption of a carbon/epoxy composite is studied through immersion
of specimens in two common types of glycol-based (corn-based and synthetic) deicing fluids at two temperatures. Test results
indicate that the effects of the fluids are similar at room temperature, while at elevated temperatures, the specimens immersed
in the corn-based deicing fluid show a greater drop in the tensile strength. Moreover, gravimetric analysis results show a
mass gain in all specimens, with a significantly lower gain from the corn-based deicing fluid than from the synthetic one
at the two temperatures selected in this study. 相似文献
44.
Aimo A. Törn 《BIT Numerical Mathematics》1984,24(3):317-332
A hash structure, Overflow Indexing (OVI), using an index for the overflows is presented. The index contains one entry (key, bucket number) for each overflow. Formulas for computing the expected number of entries in the index and the standard deviation are derived and the numerical results obtained using these formulae are presented in a graph. It is concluded that storing the index in the main memory when operating on the file is feasible for small to medium-sized, and sometimes even large files. The number of probes for both a successful and unsuccessful search is one. Deletion requires two probes and insertion two or three probes. Details of OVI are presented and illustrated by simulation experiments. The structure of the index is discussed and one possible structure, hashing with dynamic buckets, is presented. 相似文献
45.
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47.
Banci L Bertini I Ciofi-Baffoni S Boscaro F Chatzi A Mikolajczyk M Tokatlidis K Winkelmann J 《Chemistry & biology》2011,18(6):794-804
Human anamorsin was implicated in cytosolic iron-sulfur (Fe/S) protein biogenesis. Here, the structural and metal-binding properties of anamorsin and its interaction with Mia40, a well-known oxidoreductase involved in protein trapping in the mitochondrial intermembrane space (IMS), were characterized. We show that (1), anamorsin contains two structurally independent domains connected by an unfolded linker; (2), the C-terminal domain binds a [2Fe-2S] cluster through a previously unknown cysteine binding motif in Fe/S proteins; (3), Mia40 specifically introduces two disulfide bonds in a twin CX(2)C motif of the C-terminal domain; (4), anamorsin and Mia40 interact through an intermolecular disulfide-bonded intermediate; and (5), anamorsin is imported into mitochondria. Hence, anamorsin is the first identified Fe/S protein imported into the IMS, raising the possibility that it plays a role in cytosolic Fe/S cluster biogenesis also once trapped in the IMS. 相似文献
48.
We study the Kobayashi pseudodistance for orbifolds, proving an orbifold version of Brody’s theorem and classifying which
one-dimensional orbifolds are hyperbolic. 相似文献
49.
Gao CL Ernst A Winkelmann A Henk J Wulfhekel W Bruno P Kirschner J 《Physical review letters》2008,100(23):237203
At the (001) surface of the alloy Ni(50)Mn(50), a noncollinear spin density is observed in real space by spin-polarized scanning tunneling microscopy. The spin density of individual atoms also varies in both size and direction as a function of bias voltage, indicating a noncollinearity in the energy domain. The noncollinearity is driven by a surface reconstruction which breaks the otherwise high surface symmetry. First-principles electronic-structure calculations support the experimental observations and evidence the interplay of reconstruction and spin-orbit coupling. 相似文献
50.
In an interferometric pump-probe experiment, we demonstrate the phase tuning of the spin polarization of photoelectrons emitted in a three-photon process from Cu(001). A phase shift of pi between delayed ultrafast circularly polarized light pulses can switch the spin polarization from +/-20% to -/+40%. In the delay regime of overlapping pulses, we show the dominating role of optical interference effects in determining the spin polarization. For longer delays, we detect the influence of the coherent material response, manifested in both the final state electron population as well as the final state spin polarization. 相似文献