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81.
Prof. C. Vasilev L. Faitondjiev I. Havezov 《Monatshefte für Chemie / Chemical Monthly》1974,105(6):1199-1205
The effect of saturation of the support with extractant on the height equivalent to a theoretical plate and capacity was studied from 0.25 to 1 g Di-(2-ethylhexyl)phosphoric acid per gram Chromosorb. The results were obtained in the case of high loading with Rare Earths in the column. 相似文献
82.
M. V. Cilipotkina A. A. Tager O. V. Nečaeva A. V. Vasilev L. M. Bykova S. M. Bulygina V. A. Vasnev S. N. Salazkin 《Colloid and polymer science》1974,252(2):174-174
Ohne Zusammenfassung 相似文献
83.
Prof. Chr. Vasilev L. Faitondjiev I. Havesov 《Monatshefte für Chemie / Chemical Monthly》1975,106(3):729-734
The effect of HCl concentration in the mobile phase on the extraction chromatographic behavior of Nd with high column loading was investigated. Significant differences in Nd behavior at low and high HCl concentration were established. 相似文献
84.
85.
A. N. Novikov V. A. Vasilev O. F. Lenina 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(11):1743-1747
The heat capacity and density of solutions of ammonium bromide, iodide, and nitrate in methylpyrrolidone (MP) were studied calorimetrically and densimetrically at 298.15 K. The standard partial molar heat capacities and volumes (\(\overline {C_{p_2 }^O } \) and \(\overline {V_2^O } \)) of the electrolytes in MP were calculated. The standard heat capacities \(\overline {C_{p_i }^O } \) and volumes \(\overline {V_i^O } \) of the nitrate and ammonium ions in MP were determined. The mean coordination numbers of the NH 4 + and NO 3 ? ions in a solution in MP at 298.15 K were calculated. 相似文献
86.
This paper is devoted to studying the properties of permutation binomials over finite fields and the possibility to use permutation
binomials as encryption functions. We present an algorithm for enumeration of permutation binomials. Using this algorithm,
all permutation binomials for finite fields up to order 15000 were generated. Using this data, we investigate the groups generated
by the permutation binomials and discover that over some finite fields
\mathbb Fq {{\mathbb F}_q} , every bijective function on [1..q − 1] can be represented as a composition of binomials. We study the problem of generating permutation binomials over large
prime fields. We also prove that a generalization of RSA using permutation binomials is not secure. Bibliography: 9 titles. 相似文献
87.
Anishur Rahman AT Vasilev K Majewski P 《Journal of colloid and interface science》2011,354(2):592-596
In this paper, we report a facile method for synthesis of ultra small (1-3nm) gadolinium oxide (Gd(2)O(3)) nanoparticles using citric acid (CA) as a capping agent. The dependence of nanoparticle (NP) size on the ratio between CA and gadolinium (Gd) is investigated. Absorption properties of the ultra small Gd(2)O(3) NPs in UV region have four characteristic peaks at 312nm, 274nm, 253nm and 228nm. Finally, we show that the Gd(2)O(3) nanoparticles synthesized by this method induce triplet emission (phosphorescence) from CA and EG in the NIR region. 相似文献
88.
Kutsenko OK Trusova VM Gorbenko GP Deligeorgiev T Vasilev A Kaloianova S Lesev N 《Journal of fluorescence》2011,21(4):1689-1695
The interaction between Eu(III) tris-β-diketonato coordination complexes (EC), displaying antitumor activity, and lipid vesicles
composed of zwitterionic lipid phosphatidylcholine has been studied using fluorescence spectroscopy techniques. To characterize
EC-membrane binding, several fluorescent probes, including pyrene, Prodan and 1,6-diphenyl-1,3,5-hexatriene, have been employed.
It has been found that EC display effective partitioning into lipid phase, giving rise to structural modifications of both
polar and nonpolar lipid bilayer regions, viz. enhancement of membrane hydration and increase in tightness of lipid chain
packing. The fact that EC accumulating in lipid bilayer are incapable of inducing significant disruption of membrane structural
integrity creates strong prerequisites for development of liposomal nanocarriers of these potential antitumor drugs. Such
a possibility is also corroborated by the observation that EC membrane incorporation does not prevent lipid bilayer partitioning
of long-wavelength squaraine dyes which represent promising candidates for visualization of liposome biodistribution. 相似文献
89.
Quadrupole splitting and effective characteristic temperatures of 119Sn in Ni(Sb,Sn) and Co(Sb,Sn) solid solutions with B8-type structure have been studied by Mossbauer Effect method. The electric field gradient at metalloid atoms was estimated in point charge model for different variants of local environment. On the basis of the comparison between experimental Quadruple Splitting values and estimated Electric Field Gradient ones it was concluded that MeII-Sn pairs occur more often than MeII-Sb when the amount of transition metal in ditrigonal-dibipyramidal positions is less than 0.10. 相似文献