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Труды сотрудников ЦНБ УрО РАН
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Каталог библиотеки ИГД УрО РАН
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 Найдено в других БД:Каталог книг и продолжающихся изданий (39)Сводный каталог иностранных периодических изданий, имеющихся в библиотеках УрО РАН (2)Нанотехнологии (1)Труды сотрудников Института теплофизики УрО РАН (14)Труды сотрудников Института химии твердого тела УрО РАН (29)Расплавы (2)Публикации Чарушина В.Н. (7)Каталог библиотеки ИЭРиЖ УрО РАН (2)Библиометрия (1)
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Общее количество найденных документов : 11
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1.

Вид документа :
Шифр издания :
Автор(ы) : Alqubelat R. S., Kuznetsova A. D., Antonov D. O., Mironov M. A.
Заглавие : Combination of fluorescent and spin labels: a powerful method for the optimization of hydrophilic membranes for the separation of oil-in-water emulsions
Место публикации : Chimica Techno Acta. - 2023. - Vol. 10, № 4. - С. 202310415
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): fluorescent label--spin label--oil-in-water emulsion
Аннотация: A new method for assessing the quality of fibre coating based on a combination of fluorescence microscopy and electron paramagnetic resonance is presented in this work. An influence of the carboxymethylcellulose/polyvinylamine gel preparation method on the mobility of the spin label was established. The mobility of the spin label changes from 3.5 ns in the case of a polyvinylamine solution to 12.8 ns in the case of a cross-linked gel on the surface of the glass fibre. A qualitative relationship was found between the mobility of the spin label in the gel applied to the glass fibre and the rate of spreading of crude oil over its surface. This method can be used to make membranes for the separation of water-in-oil emulsions.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dutysheva E. A., Utepova I. A., Trestsova M. A., Anisimov A. S., Charushin V. N., Chupakhin O. N., Margulis B. A., Guzhova I. V., Lazarev V. F.
Заглавие : Dataset of NMR-spectra pyrrolyl- and indolylazines and evidence of their ability to induce heat shock genes expression in human neurons
Место публикации : Data in Brief. - 2021. - № 39. - С. 107562
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrrolylazines--indolylazines--photocatalysis--nuclear magnetic resonance--green chemistry
Аннотация: These data are related to our previous paper “Synthesis and approbation of new neuroprotective chemicals of pyrrolyl-and indolylazine classes in a cell model of Alzheimer’s disease” (Dutysheva et al., 2021), in which we demonstrate neu-roprotective abilities of pyrrolyl- and indolylazines in a cell model of Alzheimer’s disease. Using a novel procedure of photocatalysis we have synthesized a group of new compounds. The current article presents nuclear magnetic resonance spectra including heteronuclear single quantum coherence spectra of chemicals synthesized by us. The effect of new compounds have on heat shock proteins genes expression in reprogrammed human neurons are presented. We also presented data that verify neuronal phenotype of reprogrammed cells.
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3.

Вид документа :
Шифр издания : 54/E 27
Автор(ы) : Shevelev O. B., Illarionova N. B., Petrovski D. V., Sarapultsev A. P., Chupakhin O. N., Moshkin M. P.
Заглавие : Effects of a compound from the group of substituted thiadiazines with hypothermia inducing properties on brain metabolism in rats, a study in vivo and in vitro
Место публикации : PLOS ONE . - 2017. - Vol. 12, № 7. - С. е0180739[1-12]
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): гипотермия--hypothermia--1,3,4-thiadiazine--метаболиты мозга--brain metabolites--терморегуляция--thermoregulation
Аннотация: The aim of the present study was to examine how administration of a compound of 1,3,4-thiadiazine class 2-morpholino-5-phenyl-6H-1,3,4-thiadiazine, hydrobromide (L-17) with hypothermia inducing properties affects the brain metabolism. The mechanism by which L-17 induces hypothermia is unknown; it may involve hypothalamic central thermoregulation as well as act via inhibition of energy metabolism. We tested the hypothesis that L-17 may induce hypothermia by directly inhibiting energy metabolism. The study in vivo was carried out on Sprague-Dawley adult rats. Two doses of L-17 were administered (190 mg/ kg and 760 mg/kg). Brain metabolites were analyzed in control and treated groups using magnetic resonance spectroscopy, along with blood flow rate measurements in carotid arteries and body temperature measurements. Further in vitro studies on primary cultures from rat hippocampus were carried out to perform a mitochondria function test of L-17 preincubation (100 μM, 30 min). Analysis of brain metabolites showed no significant changes in 190 mg/kg treated group along with a significant reduction in body temperature by 1.5ÊC. However, administration of L-17 in higher dose 760 mg/kg provoked changes in brain metabolites indicative of neurotoxicity as well as reduction in carotid arteries flow rate. In addition, a balance change of excitatory and inhibitory neurotransmitters was observed. The L-17 pre-incubation with cell primary cultures from rat brain showed no significant changes in mitochondrial function. The results obtained in the study indicate that acute administration of L-17 190 mg/kg in rats induces mild hypothermia with no adverse effects onto brain metabolism.
\\\\Expert2\\NBO\\PLoS ONE\\2017 V. 12 N 7 p. e0180739.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 54/K 66
Автор(ы) : Kodess M. I., Shaburov V.S., Frolov S.N.
Заглавие : A 19f decoupler for the tesla bs 587a nmr spectrometer
Место публикации : Instruments and Experimental Tehniques. - 1999. - Vol. 42, № 3. - С. 379-380
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A decoupling unit (decoupler) operating at a resonance frequency of 19F nuclei (75.26 MHz) is developed. The unit is a plug-in block intended for the Tesla BS 587A NMR spectrometer. It allows one to perform double resonance experiments involving 19F nuclei. Decoupler parameters are determined in the continuous wave and pulsed operation modes
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5.

Вид документа : Статья из журнала
Шифр издания : 54/L 96
Автор(ы) : Zubkov V.G., Leonidov I.I., Tarakina N.V., Koryakova O. V.
Заглавие : Luminescence in Ln2CaGe4O12 under infrared laser excitation
Место публикации : Journal of Luminescence. - 2009. - Vol. 129, № 12. - С. 1625-1628
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Luminescent properties of the new group of crystalline optical materials Ln2CaGe4O12, Ln=Dy, Ho, Er, Tm, Yb were studied under laser excitation at ?=976 nm in the stationary mode. Er2CaGe4O12, Ho2CaGe4O12 and also the solid solution LnxY2-xCaGe4O12 (0?x?2) may be used in photonics as optical elements, such as converters and resonance amplifiers????
\\\\Expert2\\nbo\\Journal of Luminescence\\2009, v. 129, p.1625.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 54/S 90
Автор(ы) : Shkvarin A. S., Yarmoshenko Yu. M., Skorikov N. A., Merentsov A. I., Titov A. N., Slepukhin P. A., Marchenko D. E., Sperling M.
Заглавие : Studying the electronic structure of Cr (x) Ti(1-x) Se(2) by X-ray resonance and absorption spectroscopy
Место публикации : Journal of experimental and theoretical physics. - 2011. - Vol. 112, № 1. - С. 87-93
Примечания : Bibliogr. : p. 93 (19 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Cr (x) Ti(1 - x) Se(2) (x = 0-0.83) solid solutions have been synthesized. Single crystals have been grown in the range of concentrations x = 0-0.83. Structural studies of samples have revealed that chromium atoms substitute titanium in the TiSe(2) matrix. The X-ray photoelectron spectra of the core levels, the resonance spectra of the valence bands in 1T-Cr (x) Ti(1 - x) Se(2), and the X-ray absorption spectra of titanium and chromium are studied. The titanium and chromium atoms are shown to have oxidation numbers of +4 and +3, respectively, in an identical octahedral environment. The local density of chromium states has been calculated. The results of the calculation agree well with the experimental data and indicate that the electronic 3d states of chromium substituting titanium in the matrix are spin-polarized and the density of chromium states is halfmetal magnet in behavior
\\\\Expert2\\nbo\\Journal of Experimental and Theoretical Physics\\2011, v.112, N 1, P. 87.pdf
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7.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Cherdantseva E.V., Starichenko D.V., Slepukhin P. A., Ishmetova R. I., Shvachko Yu.N., Korolev A. V., Rusinov G. L., Ustinov V.V., Matern A. I., Charushin V. N.
Заглавие : Synthesis, structures, and magnetic properties of crystals of dinuclear copper(II) and cobalt(II) complexes with 3-(3,5-dimethylpyrazol-1-yl)-6-R-1,2,4,5-tetrazines [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 4. - С. 717-723
Систем. требования: http://www.springerlink.com/content/m21632183068u563/fulltext.pdf
Примечания : 27.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Dinuclear complexes of CuII with 3-(3,5-dimethylpyrazol-1-yl)-6-(2-hydroxyethylami-no)-1,2,4,5-tetrazine (1) and CoII with 3-(3,5-dimethylpyrazol-1-yl)-6-(piperidin-1-yl)-1,2,4,5- tetrazine (2) were synthesized and structurally characterized, and the magnetic (SQUID) and resonance (EPR) properties of van der Waals crystals based on these complexes were studied. Unusual behavior of the effective magnetic moment ?eff(T) is observed at T 60 K. A nonmonotonic increase in eff() for 1 (s~6 %) and a 20% reduction of eff for 2 have a common origin and are due to the influence of spin-orbital coupling on the character of the splitting between the t2g and eg levels of the central ion. Distortions of the coordination site “switch on” a positive (1) or negative (2) contribution of the orbital magnetic moment near 6 K. Irreversible temperature behavior of eff(T) in the heating and cooling regimes in the vicinity of 60 K suggests that the character of structural distortions and the magnetic properties are related to ligand geometry. This factor plays a significant role in crystal engineering of magnetoactive structures with polynitrogen ligands
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (4), 717-723.pdf
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8.

Вид документа : Статья из журнала
Шифр издания : 54/T 34
Автор(ы) : Fedin M., Zhilina E. F., Chizhov D. L., Charushin V. N.
Заглавие : Temperature-dependent zero-field splitting in a copper(ii) dimer studied by EPR
Место публикации : Dalton Transactions. - 2013. - Vol. 42, №13. - С. 4513-4521
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): magnetostructural correlations--temperature dependent--magnetic susceptibility
Аннотация: We report on the synthesis and temperature-dependent magnetic properties observed in an exchange-coupled copper(ii) dimer using X/Q-band Electron Paramagnetic Resonance (EPR) spectroscopy (9/34 GHz). It has been found that the zero-field splitting (D) in the dimer changes gradually by a factor close to two in the temperature range from T = 50 to 300 K. X-ray diffraction data show that this dimer consists of two five-coordinated copper ions, one of which has a highly asymmetric geometry intermediate between square pyramid and trigonal bipyramid. The copper-copper distance in the dimer is temperature-independent, whereas the degree of trigonality in an asymmetric unit decreases as the temperature is lowered. Therefore we suppose that the observed dependence D(T) originates from the interplay of different exchange interaction pathways driven by these thermal changes. Magnetic susceptibility measurements reveal weak ferromagnetic interactions, whose anisotropic parts should indeed be very sensitive to the subtle changes in the geometry and may result in apparent D(T). Apart from being a very unusual example of magneto-structural correlations, this and similar dimeric systems can be considered as an interesting type of new materials exhibiting strongly temperature-dependent magnetic p
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9.

Вид документа : Статья из журнала
Шифр издания : 54/T 44
Автор(ы) : Sevenard D. V., Kazakova O., Lork E., Duelcks T., Chizhov D. L., Roeschenthaler G.-V.
Заглавие : The structure of 4-phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt in the crystal state, solution and gas phase
Место публикации : Journal of Molecular Structure. - 2007. - Vol. 846, № 1-3. - С. 87-96
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 4-Phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt were synthesized starting from the commercially available 4-phenylcyclohexanone. With X-ray structure analysis of these compounds, for the first time the solid state structure determination for a fluorinated 1,3,5-triketone and an alkaline salt of 1,3,5-triketone was achieved. The subsequent multinuclear NMR and MS investigations revealed that in solution and gas phase, analogously to the crystal, both compounds exist predominantly in a highly delocalized double U-enol(ate) form. The carbonyl O…O distances in the dilithium salt were established to be considerably longer than the distances between oxygens of the parent 1,3,5-triketone, bonded by strong (short) resonance assisted hydrogen bonds. Among the 1,3,5-tricarbonyl compounds with known crystal structure, the entitled 1,3,5-triketone shows comparatively weak delocalization over the conjugated bis-enolone backbone.
\\\\Expert2\\nbo\\Journal of Molecular Structure\\2007, v.846, p.87.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 54/U 67
Автор(ы) : Leonidov I.I., Zubkov V.G., Tyutyunnik A. P., Tarakina N. V., Surat L. L., Koryakova O. V., Vovkotrub E. G.
Заглавие : Upconversion luminescence in Er3+/Yb3+ codoped Y2CaGe4O12 [Electronic resource]
Место публикации : Journal of Alloys and Compounds. - 2011. - Vol. 509, № 5. - С. 1339-1346
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0925838810025600
Примечания : Bibliogr. : p. 1345-1346 (52 ref.) . - 13.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Calcium yttrium tetrametagermanates Y2CaGe4O12 doped with Er3+ and Er3+/Yb3+ reveal upconversion emission in visible spectral range under near-infrared excitation, ex = 980 nm. For the solid solution ErxY2?xCaGe4O12 concentration dependencies for the green and red lines of the visible emission around 526 nm (2H11/2 4I15/2), 545 nm (4S3/2 4I15/2) and 670 nm (4F9/2 4I15/2) show the optimal value for the sample x = 0.2. The power dependence of the visible luminescence measured at room temperature in the low-power limit indicates two-photon upconversion process. Direct intensification of the upconversion emission signals has been achieved by ytterbium sensitizing. The other upconversion excitation mechanism in Y2CaGe4O12:Er3+ is discussed for an 808 nm incident laser irradiation. A scheme of excitation and emission routes involving ground/excited state absorption, energy transfer upconversion, nonradiative multiphonon relaxation processes in trivalent lanthanide ions in Y2CaGe4O12:Er3+ and Y2CaGe4O12:Er3+, Yb3+ has been proposed. Conditions for visible emission occurrence under quasi-resonance ex = 1064 nm excitation depending on pump power values are considered. In the low-power regime only near-infrared emission caused by the transition 4I13/2 4I15/2 in erbium ions has been detected
\\\\Expert2\\nbo\\Journal of Alloys and Compounds\\2011, v.509, N 5, p.1339.pdf
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pershina A. G., Brikunova O. Y., Vtorushin S. V., Gereng E. A., Ogorodova L. M., Timin A. S., Demin A. M., Krasnov V. P., Abakumov M. A., Vaneev A. N.
Заглавие : Variation in tumor pH affects pH-triggered delivery of peptide-modified magnetic nanoparticles
Место публикации : Nanomedicine: nanotechnology, biology and medicine. - 2021. - Vol. 32. - С. 102317
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): ph profile--endocytosis--iron oxide magnetic nanoparticles
Аннотация: Acidification of the extracellular matrix, an intrinsic characteristic of many solid tumors, is widely exploited for physiologically triggered delivery of contrast agents, drugs, and nanoparticles to tumor. However, pH of tumor microenvironment shows intra- and inter-tumor variation. Herein, we investigate the impact of this variation on pH-triggered delivery of magnetic nanoparticles (MNPs) modified with pH-(low)-insertion peptide (pHLIP). Fluorescent flow cytometry, laser confocal scanning microscopy and transmission electron microscopy data proved that pHLIP-conjugated MNPs interacted with 4T1 cells in two-dimensional culture and in spheroids more effectively at pH 6.4 than at pH 7.2, and entered the cell via clathrin-independent endocytosis. The accumulation efficiency of pHLIP-conjugated MNPs in 4T1 tumors after their intravenous injection, monitored in vivo by magnetic resonance imaging, showed variation. Analysis of the tumor pH profiles recorded with implementation of original nanoprobe pH sensor, revealed obvious correlation between pH measured in the tumor with the amount of accumulated MNPs.
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