排序方式: 共有15条查询结果,搜索用时 31 毫秒
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1,2-Dichloroethylene undergoes a stereospecific photoreaction with benzonitrile, the three tolunitriles, α,α,α-trifluorotoluene, fluorobenzene, and chlorobenzene to give substituted 6- 7- dichlorotricyclo[3,3,0,02,8]oct-3-enes which on treatment with base yield cyclised products or semibullvalenes: phenol yields dichlorobicyclo[3.2.1]oct-2-en-8-one with this ethylene photochemically. 相似文献
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G. F. Rodwell 《Fresenius' Journal of Analytical Chemistry》1866,5(1):402-403
Ohne Zusammenfassung 相似文献
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O'Connell-Rodwell CE Wood JD Kinzley C Rodwell TC Poole JH Puria S 《The Journal of the Acoustical Society of America》2007,122(2):823-830
The ability to discriminate between call types and callers as well as more subtle information about the importance of a call has been documented in a range of species. This type of discrimination is also important in the vibrotactile environment for species that communicate via vibrations. It has recently been shown that African elephants (Loxodonta africana) can detect seismic cues, but it is not known whether they discriminate seismic information from noise. In a series of experiments, familiar and unfamiliar alarm calls were transmitted seismically to wild African elephant family groups. Elephants respond significantly to the alarm calls of familiar herds (p=0.004) but not to the unfamiliar calls and two different controls, thus demonstrating the ability of elephants to discriminate subtle differences between seismic calls given in the same context. If elephants use the seismic environment to detect and discriminate between conspecific calls, based on the familiarity of the caller or some other physical property, they may be using the ground as a very sophisticated sounding board. 相似文献
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The 6-31G ++ basis set is described. This basis set is very similar to the existing 6-31G ** set but is somewhat smaller through the use of five (rather than six) second-order Gaussians (d functions) and has polarization function exponents optimized for correlated rather than Hartree–Fock wavefunctions. The performance of 6-31G ++ is compared with that of the 6-31G ** and 6-31G ** basis sets through calculation of the geometries and atomization energies for the set of molecules LiH, FH, H2O, NH3, CH4, N2, CO, HCN, and HCCH. 相似文献
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Analytical and Bioanalytical Chemistry - 相似文献
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Rodwell Kufakunesu 《Quaestiones Mathematicae》2018,41(1):27-40
In a recent paper by Mnif [18], a solution to the portfolio optimization with stochastic volatility and constraints problem has been proposed, in which most of the model parameters are time-homogeneous. However, there are cases where time-dependent parameters are needed, such as in the calibration of financial models. Therefore, the purpose of this paper is to generalize the work of Mnif [18] to the time-inhomogeneous case. We consider a time-dependent exponential utility function of which the objective is to maximize the expected utility from the investor’s terminal wealth. The derived Hamilton-Jacobi-Bellman(HJB) equation, is highly nonlinear and is reduced to a semilinear partial differential equation (PDE) by a suitable transformation. The existence of a smooth solution is proved and a verification theorem presented. A multi-asset stochastic volatility model with jumps and endowed with time-dependent parameters is illustrated. 相似文献
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Stammer und G. F. Rodwell 《Fresenius' Journal of Analytical Chemistry》1862,1(1):482-484
Ohne Zusammenfassung 相似文献
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G. F. Rodwell 《Fresenius' Journal of Analytical Chemistry》1875,14(1):190-191
Ohne Zusammenfassung 相似文献
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