排序方式: 共有28条查询结果,搜索用时 15 毫秒
21.
A. Urbanowicz A. Bielski R. S. Trawiński S. Brym J. Wolnikowski 《The European physical journal. Special topics》2007,144(1):247-249
Effect of temperature on the collision half-width and shift of
the 748.8 nm neon line emitted from a low-pressure glow discharge in pure
neon has been investigated with a Fabry-Perot interferometer. 相似文献
22.
23.
Józef Joachim Telega Włodzimierz Robert Bielski 《Journal of Global Optimization》2000,17(1-4):353-386
The aim of this paper is to review developments in exact and approximate controllability as well as stabilization of elastic, thermoelastic, and thermo-viscoelastic bodies. Heat equations are also discussed. 相似文献
24.
25.
Abstract— The spectra and molar absorbances of the HO2 and O2 - free radicals have been redetermined in aqueous formate solutions by pulse and stopped-flow radiolysis as well as by 60 Co gamma-ray studies. The extinction coefficients at the corresponding maxima and 23°C are 225 = 1400 ± 80 M -1 cm-1 and 225 = 2350 ± 120 M -1 cm-1 respectively. Reevaluation of earlier published rate data in terms of the new extinction coefficients yielded the following rate constants for the spontaneous decay of HO2 and O2 - : K Ho2+HO2 = (8.60 ± 0.62) × 105 M -1 s-1 ; K Ho2+O2- = (1.02 ± 0.49) × 108 M -1 s-1 ; K Ho2+O2- < 0.35 M -1 s-1 . For the equilibrium HO2 → O2 - + H+ the dissociation constant is K Ho2 = (2.05 ± 0.39) × 10-5 M or p K HO2 = 4.69 ± 0.08. G (O2 - ) has been evaluated as a function of formate concentration. 相似文献
26.
Rados?aw Szmytkowski Sebastian Bielski 《Journal of Mathematical Analysis and Applications》2010,365(1):195-197
Recently, Yakubovich [Opuscula Math. 26 (2006) 161-172] and Passian et al. [J. Math. Anal. Appl. 360 (2009) 380-390] have presented alternative proofs of an orthogonality relation obeyed by the Macdonald functions of imaginary order. In this note, we show that the validity of that relation may be also proven in a simpler way by applying a technique occasionally used in mathematical physics to normalize scattering wave functions to the Dirac delta distribution. 相似文献
27.
Ravindra L. Arudi Benon H. J. Bielski Augustine O. Allen 《Photochemistry and photobiology》1984,39(5):703-706
Abstract— During the reaction HO2 + HO2 (or O2 - ) = H2 O2 + O2 in aqueous solution, no luminescence in the region 620–720 nm, expected if the product O2 were formed in a singlet state, could be detected. If any singlet O2 is formed, its yield must be less than 10%. Faint luminescence, sometimes found at shorter wavelengths, was shown to arise from reaction of HO2 with impurities in the reagents present. 相似文献
28.
Three problems are solved for a nonlinear model of elastic plates with transverse shear deformations. The material of the plate may be anisotropic. An existence theorem is formulated and proved for a class of boundary conditions. A uniqueness theorem is given for small loadings. The dual problem is derived and the minimax or Lagrangian approach is discussed.Dedicated to the memory of Paweek Telega, son of the second author 相似文献