It is proved that algebraic and topological K-functors are isomorphic on the category of stable generalized operator algebras which are Ki-regular for all i > 0. 相似文献
Coulomb Sturmians are obtained in prolate spheroidal coordinates by separation of variables in the Schrödinger equation and direct solution of the appropriate one-dimensional equations. Molecular orbitals are expressed as linear combinations of the introduced Coulomb Sturmians and some low-lying energy terms and corresponding wave functions are calculated for one-electron diatomic molecules. It is shown that similarity of the one- and two-centre orbitals in spheroidal coordinates, combined with completeness and good convergence properties of Coulomb Sturmians, substantially speeds up convergence and makes the calculated results closer to the exact ones. Application of the elaborated calculating scheme for diatomic many-electron molecules is discussed. 相似文献
Journal of Thermal Analysis and Calorimetry - The stabilizer, which is used during the preparation of Poly(lactide-co-glycolide) (PLGA) nanoparticles (NPs), is of great importance for particle... 相似文献
This study is focused on the analysis of the dynamics of Earth crust tilting at the Enguri Dam International Test Area (EDITA).
We aimed to perform a qualitative and quantitative evaluation of the dynamical properties of Earth tilt time series in the
context of the development of a real-time telemetric monitoring system at the Enguri test area. The set of Earth tilt hourly
time-series data, recorded during the construction of the Enguri power station and subsequent fill of reservoir (1971–1983),
has been analyzed. Modern methods of linear and nonlinear time-series analysis have been used. It has been observed that Earth
tilt sequences clearly reveal properties of low-dimensional dynamics. Quantitative changes in the dynamics of tilt generation
connected with different stages of anthropogenic influence, such as the construction of the Enguri high dam and reservoir
fill, have also been detected. It was shown that these changes are transient, since the character of Earth tilt dynamics has
been restored at the end of observation. 相似文献
Sols of core–shell silver nanoparticles (AgNPs) are synthesized by electrochemical method. The method provides the ability to adjust the particle size by changing both the concentration of oleic acid and the residence time τ0 in the organic phase. We synthesized AgNPs with oleic acid (OA) concentration of 0.25% (AgNPs & 0.25% OA) and 0.75% (AgNPs & 0.75% OA). These nanoparticles have been studied using modern physical–chemical methods. Differential thermal analysis curves indicate the chemical nature of bond ligand in the secondary shell; this conclusion is confirmed by quantum chemical simulation and semi-empirical calculation. In the electron paramagnetic resonance spectra of silver-containing sols AgNPs & 0.25% OA and AgNPs & 0.75% OA complex wide asymmetric signals of 500–800 G and g-factor of 2.09–2.13 are recorded, in addition, in the spectra of AgNPs with bilayer the pronounced ferromagnetic contribution is observed. The change of the oleic acid layers of the particles affects the dimension of the nanocrystallites that are being formed and the manifestation of their magnetism.
Trial registration number and date of registration JCS-P-20-03-0188.R1, 22-Sep-2020 (02-Mar-2020)