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1.
Russian Physics Journal - The paper shows that the values of zero-point energy and vibrations of atoms in a crystal determined by the uncertainty principle, depend on the dynamic response of atoms.... 相似文献
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A near-field scanning optical microscope (NSOM), which we built, is used to investigate 1–5-μm wide stripes with a 10-nm thick
layer—a quantum well — on a GaAs surface. A map of the photoluminescence intensity is obtained synchronously with the topographic
profile of the structures. The measured spatial distribution of the photoluminescence intensity is described satisfactorily
in a model that takes into account carrier diffusion in the layer and the existence of a region with a short carrier lifetime
near the side boundaries of the layer.
Pis’ma Zh. éksp. Teor. Fiz. 63, No. 7, 523–527 (10 April 1996) 相似文献
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M. Dzh Manafov 《Mathematical Notes》2007,82(1-2):52-56
We obtain the spectrum structures and the spectral decomposition of a non-self-adjoint differential operator L generated by the differential expression l[y] = - y’’ + ax m e iβx y, m, μ, ≥ 1, in the space L 2(-∞, ∞). 相似文献
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Samsoniya Sh. A. Tabidze D. M. Kereselidze Dzh. A. Suvorov N. N. 《Chemistry of Heterocyclic Compounds》1983,19(1):49-52
Chemistry of Heterocyclic Compounds - Some electrophilic substitution reactions in the di(5-indolyl) oxide series were studied. The Vilsmeier and Mannich reactions and diazo coupling and... 相似文献
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The reactions of -aroylacrylic acids and their methyl esters with 1-methyl- and 1-benzyl-3,4-dihydroisoquinolines lead to the formation of -substituted -aroylpropionic acids and their esters, which undergo cyclization to benzopyrrocolinone derivatives.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 943–945, July, 1979. 相似文献
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R. Dzh. Khachikyan N. V. Tovmasyan M. G. Indzhikyan 《Russian Journal of General Chemistry》2007,77(6):1034-1036
Triphenylphosphine reacts with 2,3-dichloro-2-methylpropionic acid and its ester along the dehydrochlorination pathway with the participation of the less labile hydrogen atom from the methyl group. The subsequent reaction of the unsaturated product with triphenylphosphine yields 2-carboxypropane- and 2-methoxycarbonylpropane-1,3-diylbis(triphenylphosphonium) dichlorides, respectively. The unusual course of dehydrochlorination may be due to easier electron density transfer from the C-H bond of the methyl group as compared to the chloromethyl group in the carbocationoid intermediate. With the bromine analogs, the reaction pathways are different. The ester reacts similarly to dibromopropionic acid and its derivatives, following the debromination scheme, whereas the free acid gives the product of double nucleophilic substitution. 相似文献
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Dzh. Yu. Nadzhafov 《Russian Journal of Applied Chemistry》2011,84(9):1532-1540
Catalytic dehydrochlorination of 1,2-dichloropropane in the presence of γ-Al2O3, CaX, and haydite was studied. A relationship between the catalytic activity and acidity of the catalysts under study was
revealed. 相似文献