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51.
Many interesting topologies arise in the theory of FK spaces. Here we present some new results on the topologies of certain FK spaces and the determinations of their dual spaces. We also apply our software package for visualization and animations in mathematics and its extensions to the representation of neighborhoods in various topologies. 相似文献
52.
Veli B. Shakhmurov 《Potential Analysis》2011,35(3):201-222
The boundary value problems for differential-operator equations with variable coefficients, degenerated on all boundary are
studied. Several conditions for the separability, fredholmness and resolvent estimates in L
p
-spaces are given. In applications degenerate Cauchy problem for parabolic equation, boundary value problems for degenerate
partial differential equations and systems of degenerate elliptic equations on cylindrical domain are studied. 相似文献
53.
54.
Veli B. Shakhmurov 《Applied Mathematics Letters》2013,26(1):87-90
The boundary value problems for linear and nonlinear singular degenerate differential-operator equations are studied. We prove the well-posedeness of the linear problem and optimal regularity result for the nonlinear problem which occur in fluid mechanics, environmental engineering and in the atmospheric dispersion of pollutants. 相似文献
55.
56.
S. R. Veličković J. B. Đustebek F. M. Veljković M. V. Veljković 《Journal of mass spectrometry : JMS》2012,47(5):627-631
Clusters of the type LinX (X = halides) can be considered as potential building blocks of cluster‐assembly materials. In this work, LinBr (n = 2–7) clusters were obtained by a thermal ionization source of modified design and selected by a magnetic sector mass spectrometer. Positive ions of the LinBr (n = 4–7) cluster were detected for the first time. The order of ion intensities was Li2Br+ > Li4Br+ > Li5Br+ > Li6Br+ > Li3Br+. The ionization energies (IEs) were measured and found to be 3.95 ± 0.20 eV for Li2Br, 3.92 ± 0.20 eV for Li3Br, 3.93 ± 0.20 eV for Li4Br, 4.08 ± 0.20 eV for Li5Br, 4.14 ± 0.20 eV for Li6Br and 4.19 ± 0.20 eV for Li7Br. All of these clusters have a much lower ionization potential than that of the lithium atom, so they belong to the superalkali class. The IEs of LinBr (n = 2–4) are slightly lower than those in the corresponding small Lin or LinH clusters, whereas the IEs of LinBr are very similar to those of Lin or LinH for n = 5 and 6. The thermal ionization source of modified design is an important means for simultaneously obtaining and measuring the IEs of LinBr (n = 2–7) clusters (because their ions are thermodynamically stable with respect to the loss of lithium atoms in the gas phase) and increasingly contributes toward the development of clusters for practical applications. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
57.
58.
Veličković SR Đustebek JB Veljković FM Veljković MV 《Journal of mass spectrometry : JMS》2012,47(5):627-631
Clusters of the type Li(n)X (X = halides) can be considered as potential building blocks of cluster-assembly materials. In this work, Li(n)Br (n = 2-7) clusters were obtained by a thermal ionization source of modified design and selected by a magnetic sector mass spectrometer. Positive ions of the Li(n)Br (n = 4-7) cluster were detected for the first time. The order of ion intensities was Li(2)Br(+) > Li(4)Br(+) > Li(5)Br(+) > Li(6)Br(+) > Li(3)Br(+). The ionization energies (IEs) were measured and found to be 3.95 ± 0.20 eV for Li(2)Br, 3.92 ± 0.20 eV for Li(3)Br, 3.93 ± 0.20 eV for Li(4)Br, 4.08 ± 0.20 eV for Li(5)Br, 4.14 ± 0.20 eV for Li(6)Br and 4.19 ± 0.20 eV for Li(7)Br. All of these clusters have a much lower ionization potential than that of the lithium atom, so they belong to the superalkali class. The IEs of Li(n)Br (n = 2-4) are slightly lower than those in the corresponding small Li(n) or Li(n)H clusters, whereas the IEs of Li(n)Br are very similar to those of Li(n) or Li(n)H for n = 5 and 6. The thermal ionization source of modified design is an important means for simultaneously obtaining and measuring the IEs of Li(n)Br (n = 2-7) clusters (because their ions are hermodynamically stable with respect to the loss of lithium atoms in the gas phase) and increasingly contributes toward the development of clusters for practical applications. 相似文献
59.
Kasumov VT Köksal F Zeren Y 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2006,63(2):330-336
A series of copper(II) complexes (CuL2x) with new N-di-methylphenyl-3,5-Bu2t-salicylaldimines (L(x)H) were prepared and characterized by IR, UV/vis, 1H NMR, ESR, cyclic voltammetry techniques and chemical oxidation. L(x)H ligands have been found selectively bind to a Cu(II), rather than to Ni(II), Co(II), Mn(II), VO(IV), Zn(II) and Cd(II). ESR examinations of the CuL2x complexes demonstrate that they exist in magnetically diluted mononuclear or coupled triplet-state structures in the solid. The temperature dependent (113-283 K) intensity of the powder ESR spectra for some CuL2x is characteristic of ferromagnetic coupling (J > 0). The reduction potentials of CuL2x in DMSO are sensitive to aniline moieties. Chemical oxidation of CuL2x with (NH4)2[Ce(NO3)6] in CHCl3 and MeCN solutions at 300 K affords gradually disappearance of their ESR signals and dramatic changes in the electronic spectra as well as the appearance of new maximum bands at 530-672 (CHCl3) and 670-700 nm (MeCN), suggesting generation of Cu(II)-phenoxyl radical species. 相似文献
60.