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91.
92.
R. Payne R.J. Magee J. Liesegang 《Journal of Electron Spectroscopy and Related Phenomena》1985,35(1):113-130
Measurements are presented for the binding energy variations of (a) (Ni, Cu) 2p, S 2p and N 1s core levels in a series of Ni and Cu disubstituted dithiocarbamates and (b) (Ni, Cu) 2p, and S 2p core levels in a series of Ni xanthates. These shifts, which are observed to be negative and quite large for the S 2p levels, are then correlated with the infrared absorption frequency variations for the associated intramolecular stretching vibrations of the same series. The results are interpreted in terms of a model based on atomic charges and their potential effects on both variations. The functional relationships between the binding energy and infrared frequency variations are shown to be in good agreement with the experimental results. 相似文献
93.
Some aspects of the theory of superconductors in noninertial frames are clarified. Interference effects, such as that observed by Zimmerman and Mercereau on rotation of a SQUID, would be destroyed if the apparatus were shielded by a superconducting shell. 相似文献
94.
95.
96.
We have extended our functionalization strategy for pentacene to the higher acenes hexacene and heptacene. Provided a large enough alkyne substituent is used, these large aromatic rods are both stable and soluble and can be characterized spectroscopically as well as by single-crystal X-ray diffraction. 相似文献
97.
The accumulation of plastic strain over a number of cycles of heating and cooling of the outer surface of a loaded thick-walled circular cylinder is computed. Two types of loadings are considered, viz. pure axial torsion and a combination of torsion and tension. The cylinder material is taken to be isotropic and linear strain-hardening; its yield stress reduces with temperature and with the number of thermal cycles completed. This cyclic softening is shown to produce an incremental collapse or ratcheting behaviour in contrast to the alternating plasticity which occurs when the yield stress on first loading is maintained. 相似文献
98.
Summary Let Lεu and L
0
v be the elliptic and “backward” heat operators defined by(1.1) and(1.2), respectively. The following question is considered for a pair of “non-well posed” initial-boundary value problems for Lε and L
0
: if u and v are the respective solutions, under what restrictions on the classes of admissible solutions and in what sense,
if any, does u converge to v as ɛ →0?
This research was supported in part by the National Science Foundation Grant No. GP 5882 with Cornell University. 相似文献
99.
In this note we prove strong superadditivity properties of the stress function in the elastic torsion problem for multiply connected regions. The results are extended to associated Green's functions and other domain functions. 相似文献
100.