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71.
Davidenko N. A. Dekhtyarenko S. V. Kokozay V. N. Kozinetz A. V. Nesterova O. V. Skryshevsky V. A. Studzinskii S. L. Tretyak O. V. Chigorin é. N. 《Physics of the Solid State》2010,52(6):1303-1307
Physics of the Solid State - The electrical and photoconductive properties of films of the composites based on poly(vinyl alcohol) with additions of the (NH4)[Cu(en)2Fe(C2O4)3] · 2DMSO... 相似文献
72.
N. M. Nesterova V. P. Pavlyuchenko A. P. Chubenko S. B. Shaulov 《Physics of Atomic Nuclei》2003,66(5):847-853
Data from the Tien Shan array Adron on the dependence of the lateral distributions of the electron-photon component (age parameter S) in extensive air showers of cosmic rays on the number of electrons, N e , which is a quantity that characterizes the primary-nucleus energy E0, are subjected to a comparative analysis. The distributions in question are given both for all showers and for showers accompanying high-energy gamma rays and hadrons in x-ray emulsion chambers. According to calculations, events associated with the latter are generated predominantly by primary protons, and this makes it possible to assess their role at various values of E0. The distributions with respect to S suggest a significant fraction of light nuclei, predominantly protons, in the region after the knee in the spectrum for N e >106, at least up to N e =5.6×106 (E0 ~ 10 PeV). 相似文献
73.
N. A. Nesterova I. I. Gavrilova E. F. Panarin 《Russian Journal of Applied Chemistry》2009,82(4):618-621
Radical precipitative copolymerization of N-vinylformamide with acrylic and methacrylic acids in isopropanol at 60°C, with azobisisobutyric acid dinitrile as initiator, was studied. The conditional values of the relative reactivities were found: r 1 = 0.068 ± 0.008 and r 2 = 1.638 ± 0.025 for the N-vinylformamide-methacrylic acid copolymer and r 1 = 0.15 ± 0.03 and r 2 = 0.19 ± 0.09 for the N-vinylformamide-acrylic acid copolymer. 相似文献
74.
75.
Cherdantseva E. V. Nesterova A. V. Matern A. I. Buldakova L. Yu. Yanchenko M. Yu. Ishmetova R. I. Rusinov G. L. 《Russian Journal of General Chemistry》2010,80(9):1860-1863
Complex formation in the systems containing copper(II), cobalt(II) and nickel(II) ions (M) and 3-(3,5-dimethylpyrazol-1-yl)-6-R-1,2,4,5-tetrazines
(R = 2-hydroxyethylamino, piperidino) (L) was studied by voltammetry and spectrophotometry. Cu(II), Co(II) and Ni(II) were
found to form complex compounds with derivatives of 1,2,4,5-tetrazine with the ratio of the components M:L = 1:1. The complex
stability constants were determined. 相似文献
76.
Three sterically hindered 6‐amino‐5‐cyano‐2‐methyl‐4‐(1‐naphthyl)‐4H‐pyran‐3‐carboxylate derivatives
Vladimir N. Nesterov David J. Wiedenfeld Svitlana V. Nesterova Lucas F. Hastings 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(12):o685-o689
In the title compounds, 2‐methoxyethyl 6‐amino‐5‐cyano‐2‐methyl‐4‐(1‐naphthyl)‐4H‐pyran‐3‐carboxylate, C21H20N2O4, (II), isopropyl 6‐amino‐5‐cyano‐2‐methyl‐4‐(1‐naphthyl)‐4H‐pyran‐3‐carboxylate, C21H20N2O3, (III), and ethyl 6‐amino‐5‐cyano‐2‐methyl‐4‐(1‐naphthyl)‐4H‐pyran‐3‐carboxylate, C20H18N2O3, (IV), the heterocyclic pyran ring adopts a flattened boat conformation. In (II) and (III), the carbonyl group and a double bond of the heterocyclic ring are mutually anti, but in (IV) they are mutually syn. The ester O atoms in (II) and (III) and the carbonyl O atom in (IV) participate in intramolecular C—H...O contacts to form six‐membered rings. The dihedral angles between the naphthalene substituent and the closest four atoms of the heterocyclic ring are 73.3 (1), 71.0 (1) and 74.3 (1)° for (II)–(IV), respectively. In all three structures, only one H atom of the NH2 group takes part in N—H...O [in (II) and (III)] or N—H...N [in (IV)] intermolecular hydrogen bonds, and chains [in (II) and (III)] or dimers [in (IV)] are formed. In (II), weak intermolecular C—H...O and C—H...N hydrogen bonds, and in (III) intermolecular C—H...O hydrogen bonds link the chains into ladders along the a axis. 相似文献
77.
Pozhidaev A. I. Nesterova Ya. M. Polynova T. N. Porai-Koshits M. A. Logvinenko V. A. 《Journal of Structural Chemistry》1977,18(2):329-330
Journal of Structural Chemistry - 相似文献
78.
Copper(II) and cobalt(II) salt complexes with 2,6-dimethyl-3.5-pyridinedicarboxylic acid dihydrazide
E. Yu. Nesterova E. S. Kositsyna L. P. Tsyganok A. B. Vishnikin 《Russian Journal of Inorganic Chemistry》2012,57(3):350-357
Complexes of 2,6-dimethyl-3,5-pyridinedicarboxylic acid dihydrazide (DH) with copper(II) and cobalt(II) nitrates and sulfates
have been studied by IR and UV spectroscopy, DTA, and X-ray crystallography. The complexation results in polynuclear compounds
of the {[M(DH)(ROH)
n
]An
m
}
z
composition (M = Cu2+, Co2+; An = SO42−, NO3−; R = H, i-Pr; n = 0.5–4, m = 1.2, z ≥ 4) containing bidentate DH bridges coordinated to the metal through the carbonyl oxygen atom and the amino group nitrogen
atom of the hydrazide moiety. 相似文献
79.
With the advent of next-generation sequencing (NGS) systems and the associated high throughput they afford, the input to these machines requires manageable lengths of fragments (~1000 bp) produced from chromosomal DNAs. Therefore, it is critical to develop devices that can shear DNA in a controlled fashion. We report a polymer-based microfluidic device that establishes an efficient and inexpensive platform with performance comparable to a commercially available bench-top system. 相似文献
80.
Results of the development of additive-correlation and multiplicative-correlation methods for a tomographic reconstruction of the distribution pattern of the total bloodstream velocity vector with the help of ultrasound are presented for relatively low frequencies (1–2) MHz, which provide a sufficient penetration depth. The reconstruction of the vector field uses a great body of spatial-correlation data and is closely related to the process of constructing the tomographic image of a given organ as a whole. A spatial cross-correlation of intermediate images is used, which makes it possible to estimate the bloodstream velocity vector independently of the value of the real blood transfer within the total measurement time. Results of numerical simulations for constant and varying distributions of the bloodstream velocity vector in the cross sections of blood vessels are presented. 相似文献