排序方式: 共有16条查询结果,搜索用时 62 毫秒
1.
Journal of Theoretical Probability - We prove a functional limit theorem for vector-valued functionals of the fractional Ornstein–Uhlenbeck process, providing the foundation for the... 相似文献
2.
Alexandra Zamboulis Nicolas J. Rahier Matthias Gehringer Xavier Cattoën Gilles Niel Catherine Bied Joël J.E. Moreau Michel Wong Chi Man 《Tetrahedron: Asymmetry》2009,20(24):2880-2885
New heterogenised silica-based organocatalysts have been prepared via the sol–gel process from two silylated derivatives of l-proline, featuring either a carbamate or an ether linker. Co-gelification with variable amounts of TEOS was performed with and without porogen to yield high surface area solids. These materials were evaluated as heterogeneous phase organocatalysts for the asymmetric aldol reaction of p-nitrobenzaldehyde with acetone. 相似文献
3.
J.P. Vivien Y. Schutz F.A. Beck E. Bozek T. Byrski C. Gehringer J.C. Merdinger 《Physics letters. [Part B]》1979,85(4):325-327
The multipolarity of the continuum transitions in 152Dy and 160Er has been deduced from γ-ray linear polarisation and angular distribution measurements. The yrast part for 160Er agrees with the predicted stretched E2 cascade. The statistical parts for both 152Dy and 160Er consist of a mixture of dipolar stretched and non-stretched transitions, predominantly of electrical character. Below 1.5 MeV, the data of 152Dy exhibit a different structure, and reveal a stretched M1 component in the low-energy region. 相似文献
4.
A design of a combined ozone/electron beam irradiation process for treating a 50 m3/h waste water stream from a molasses processing is discussed. Moreover, a cost evaluation of such a process in comparison to a conventional ozonation/biology treatment process has been performed to assess the potential of the irradiation process for technical use. Although the result of this comparison is not bad for the irradiation process an implementation into a full scale plant would not seem to be the thing to do in the present case. 相似文献
5.
6.
The nuclear g-factor of the 2543 keV, 7+ state 40K has been measured as g = 0.59 ± 0.10. Time-integral perturbed angular distributions were measured in an external magnetic field and, after implantation, in the hyperfine field at potassium in nickel. The experimental value is discussed within the , configurations. 相似文献
7.
The lifetime of the 5.14 MeV excited state of 22Ne was investigated by use of the electronic timing, recoil distance and Doppler shift attenuation techniques. A mean life τ = 1.2±0.3 ps was obtained, corresponding to a transition strenght of 9.8 × 10?6W.u. for the El decay of this state. 相似文献
8.
Energy distributions of neutrons from the (d, n) reactions on 12–14C leading to unbound states of 13–15N have been measured at 6.3 or 6.5 MeV deuteron energy. Angular distributions have been extracted for 13, 14C(d, n) transitions and analysed with DWBA using the extra-polation technique to give l-values and transition strengths for ten unbound states in 14N and six in 15N. For the 15N level at 10.541 MeV it is concluded that Jπ is ?. A new 15N level is observed at 11.44 MeV. The 0° (d, n) cross sections have been set in proportion to (p, p0) resonance cross sections, and a pronounced l-dependence of the ratio is obtained. 相似文献
9.
10.
Rud Wegscheider k. M. k. Akad. Heinr Gehringer 《Monatshefte für Chemie / Chemical Monthly》1903,24(5):364-366
Ohne ZusammenfassungFür eine zur Ausführung dieser Untersuchungen gewährte Subvention sagen wir der kaiserlichen Akademie der Wissenschaften in Wien ergebenen Dank. 相似文献