Центральная Научная Библиотека УрО РАН

Вид документа : Статья из журнала
Шифр издания : 54/P 59
Автор(ы) : Postnikova I. I., Yatluk Yu. G., Khrustaleva E. A., Suvorov A. L.
Заглавие : Physicochemical analysis of the titanium acylate butanol system
Место публикации : Inorganic Materials. - 1992. - Vol. 28, N 6. - С. 1043-1045
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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Вид документа : Статья из журнала
Шифр издания : 54/U 52
Автор(ы) : Sosnovskikh V. Ya., Vorontsov I. I., Kutsenko V. A., Yatluk Yu. G.
Заглавие : Unexpexted isomerization in the series of fluorine-containing 2,3-dihydro-1H-1,4-diazepines with a 2-aminoethyl group at one of the nitrogen atoms [Electronic resource]
Место публикации : Mendeleev Communications. - 2000. - Vol. 10, N 2. - С. 56-58. - ISSN 0959-9436. - ISSN 0959-9436
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0959943600708376
Примечания : 10.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/S 73
Автор(ы) : Sosnovskikh V. Ya., Mel'nikov M. Yu., Yatluk Yu. G.
Заглавие : 2,3-dihidro-2,2-dimethyl-6-trifluoromethyl-4-pyrone as Useful CF3-containing Synthon : доклад, тезисы доклада
Место публикации : International Memorial I.Postovsky Conference on Organic Chemisty, Ekaterinburg, March 17-20, 1998 : program and abstracts. - Ekaterinburg, 1998. - С. 94
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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Вид документа : Статья из журнала
Шифр издания : 54/N 10
Автор(ы) : Skorik Yu.A., Gomes C. A. R. , Vasconcelos M.T.S.D., Yatluk Yu. G.
Заглавие : N-(2-Carboxyethyl)chitosans: Regioselective synthesis, characterisation and protolytic equilibria
Место публикации : Carbohydrate Research. - 2003. - Vol. 338, № 3. - С. 271-276
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: N-(2-Carboxyethyl)chitosans were obtained by reaction of low molecular weight chitosan with a low degree of acetylation and 3-halopropionic acids under mild alkaline media (pH 8-9, NaHCO3) at 60°C. The chemical structure of the derivatives obtained was determined by 1H and 13C NMR spectroscopies. It was found that alkylation of chitosan by 3-halopropionic acids proceeds exclusively at the amino groups. The products obtained are described in terms of their degrees of carboxyethylation and ratio of mono-, di-substitution and free amine content. The protonation constants of amino and carboxylate groups of a series of N-(2-carboxyethyl)chitosans were determined by pH-titration at ionic strength 0.1 M KNO3 and 25°C. © 2002 Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания : 54/C 89
Автор(ы) : Nikitin E. D., Popov A. P., Bogatishcheva N. S., Yatluk Yu. G.
Заглавие : Critical Temperatures and Pressures of Straight-Chain Saturated Dicarboxylic Acids (C4 to C14)
Место публикации : Journal of Chemical & Engineering Data. - 2004. - Vol. 49, № 6. - С. 1515-1520: ил.
Примечания : Библиогр.: с. 1520 (25 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and pressures of nine saturated straight-chain dicarboxylic acids HOOC(CH2)nCOOH with n = 2, 3, 4, 5, 6, 7, 8, 10, and 12 have been measured. All of the acids investigated are thermally unstable at their critical points. The method of pulse heating of a wire probe immersed in the liquid under study has been used. Residence times are from (0.01 to 1) ms. The experimental critical properties of dicarboxylic acids have been compared with the values calculated by the group-contribution methods of Ambrose, Joback, and Reid, Constantinou and Gani, and Marrero and Gani. ??
\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2004, v.49, p.1515.pdf
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Вид документа : Статья из журнала
Шифр издания : 54/C 74
Автор(ы) : Skorik Yu. A., Gomes C. A. R. , Podberezskaya N. V. , Romanenko G. V., Pinto L. F., Yatluk Yu. G.
Заглавие : Complexation models of N-(2-carboxyethyl)chitosans with copper(II) ions
Место публикации : Biomacromolecules. - 2005. - Vol. 6, № 1. - С. 189-195. - ISSN 1525-7797. - ISSN 1525-7797
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The copper(II) complex formation equilibria of N-(2-carboxyethyl)chitosans with three different degrees of substitution (DS = 0.42, 0.92, and 1.61) were studied in aqueous solution by pH-potentiometric and UV-spectrophotometric techniques. It was demonstrated that the complexation model of CE-chitosans depends on DS: the [Cu(Glc-NR2)2] complexes are predominant for two lower substituted samples ("bridge model", log ?12 = 10.06 and 11.6, respectively), whereas the increase of DS leads to formation mainly of the [Cu(Glc-NR2)] complexes ("pendant model", log ?11 = 6.41). As a model for copper complexation with a disubstituted residue of CE-chitosan, the complex of N-methyliminodipropionate [CuMidp(H2O)]·(H2O) was synthesized and structurally characterized by XRD. The unit cell consists of two crystallographically nonequivalent Cu atoms having slightly distorted square pyramidal coordination; Midp constitutes the basal plane of the pyramid and acts as a tetradentate NO3 chelate-bridging ligand by the formation of two six-membered chelate rings (average Cu-O 1.99 A, Cu-N 2.04 A) and a bridge via carbonyl O atom (average Cu-O 1.99 A), an apical position is occupied by a water molecule (average Cu-Ow 2.30 A).
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Вид документа : Статья из журнала
Шифр издания : 54/B 62
Автор(ы) : Pestov A. V., Peresypkina E. V., Virovets A. V., Podberezskaya N. V. , Yatluk Yu. G., Skorik Yu.A.
Заглавие : Bis[N-(2-hydroxyethyl)-beta-alaninato]-copper(II)
Место публикации : Acta Crystallographica Section C: Crystal Structure Communications. - 2005. - Vol. 61, № 12. - С. m510-m512
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The CuII ion in the title complex, [Cu(C5H 10NO3)2] or [Cu(He-ala)2] [He-ala = W-(2-hydroxyethyl)-?-alaninate], resides at the inversion centre of a square bipyramid comprised of two facially arranged tridentate He-ala ligands. Each He-ala ligand binds to a CuII ion by forming one six-membered ?-alaninate chelate ring in a twist conformation and one five-membered ethanolamine ring in an envelope conformation, with Cu-N = 2.017 (2) A, Cu-OCoo = 1.968 (1) A and Cu-OOH = 2.473 (2) A. The [Cu(He-ala)2] molecules are involved in a network of O-H?O and N-H?O hydrogen bonds, forming layers parallel to the (101?) plane. The layers are connected into a three-dimensional structure by van der Waals interactions, so that the molecular centres form pseudo-face-centered close packing. © 2005 International Union of Crystallography????
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Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/L 95
Автор(ы) : Balashov I., Jayaweera P., Hombostel M. , Sanjurjo A., Lipilin A. S., Kyzin B. L., Bronin D. I., Yatluk Yu. G., Sevastianov V. V.
Заглавие : Low cost soft manufacturing process in book: Ceramic engineering an science proceedings
Место публикации : Proceedings of the 29th International Conference on Advanced Ceramic and Composites in Solid Oxide Fuel Cells. - 2005. - Vol. 26. - С. 41-47: граф.
Примечания : Библиогр.: p. 47 (5 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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Вид документа : Статья из журнала
Шифр издания : 54/N 64
Автор(ы) : Nikitin E. D., Popov A. P., Yatluk Yu. G.
Заглавие : Critical pressures and temperatures of n-diaminoalkanes (C2 to C12)
Место публикации : Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 2. - С. 609-611
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and pressures of eight n-diaminoalkanes NH 2(CH2)nNH2 with n = 2, 3, 4, 6, 8, 9, 10, and 12 have been measured. The method of pulse heating of a wire probe immersed into the liquid under study has been used. Residence times are from (0.03 to 1) ms. The critical properties of diaminoalkanes have been estimated by the group-contribution methods by Joback and Reid, Constantinou and Gani, and Marrero and Gani. These properties have also been calculated using a method based on the assumption that the functions describing the dependence of the critical properties of homologous series on the number of mers in a molecule should be self-similar and provide the scaling behavior for long-chain molecules. The last method provides the best accuracy in calculating the critical properties of diaminoalkanes. For this method, the average absolute errors are equal to 0.4 % for the critical temperature and about 2 % for the critical pressure. © 2006 American Chemical Society
\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2006, v.51, p.609.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 54/N 64
Автор(ы) : Nikitin E. D., Popov A. P., Yatluk Yu. G.
Заглавие : Critical temperatures and pressures of 12 phthalates using the pulse-heating method
Место публикации : Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 4. - С. 1326-1330
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and pressures of phthalates with the straight side alkyl chains C6H4-1,2-[COO(CH2) nH]2 (n is from 1 to 11) as well as bis(2-ethylhexyl) phthalate have been measured. No literature data are available for the critical properties of phthalates. Since phthalates decompose at temperatures well below their critical temperatures, the method of pulse heating of a wire probe immersed into the liquid under study has been used. The method minimizes the effect of thermal decomposition because residence times are only from (0.035 to 1) ms. The experimental critical properties of phthalates have been compared with the values calculated using the group-contribution methods by Constantinou and Gani and Marrero and Gani ??
\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2006, v.51, p.1326.pdf
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11.

Вид документа : Статья из журнала
Шифр издания : 54/N 64
Автор(ы) : Nikitin E. D., Popov A. P., Yatluk Yu. G.
Заглавие : Critical-point measurements for phenylethanoic to 7-phenylheptanoic acids
Место публикации : Journal of Chemical & Engineering Data. - 2006. - Vol. 51, № 4. - С. 1335-1338
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and pressures of phenylalkanoic acids with a straight alkyl chain C6H5(CH2)nCOOH (n = 1 to 6) have been measured. The method of pulse heating of a wire probe placed into the substance under study has been used. The method minimizes the thermal decomposition because residence times are from (0.035 to 1) ms. An equation for the correlation of the critical pressures of phenylalkanoic acids with the number of CH2 groups between phenyl and carboxyl functional groups and molar mass has been obtained. The experimental critical constants of phenylalkanoic acids have been compared with the values calculated by the group-contribution methods of Constantinou and Gani and Marrero and Gani????
\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2006, v.51, p.1335.pdf
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12.

Вид документа : Статья из журнала
Шифр издания : 54/N 64
Автор(ы) : Nikitin E. D., Popov A. P., Yatluk Yu. G.
Заглавие : Critical point measurements for n-alkyl benzoates (C8 to C 13)
Место публикации : Journal of Chemical & Engineering Data. - 2007. - Vol. 52, № 4. - С. 1336-1339
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The critical temperatures and critical pressures of six n-alkyl benzoates C6H5COO(CH2)nH with n = 1 to 6 have been measured. All the substances are thermally unstable at their critical points. The method of pulse-heating of a wire probe placed into the liquid under study has been used. Residence times are from (0.03 to 1) ms, which results in little decomposition of the liquid in the course of measuring. The experimental critical properties of alkylbenzoates have been compared with the values estimated by the group contribution methods of Constantinou and Gani and Marrero and Gani
\\\\Expert2\\nbo\\Journal of Chemical and Engineering Data\\2007, v.52, p.1336.pdf
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13.

Вид документа : Статья из журнала
Шифр издания : 54/N 10
Автор(ы) : Pestov A. V., Skorik Yu.A., Kogan G., Yatluk Yu. G.
Заглавие : N-alkylation of chitosan by beta-halopropionic acids in the presence of various acceptors
Место публикации : Journal of Applied Polymer Science . - 2008. - Vol. 108, № 1. - С. 119-127
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: N-carboxyethylation of chitosan by -halopropionic acids in the presence of various proton and halogen ion acceptors was investigated. It has been observed that carboxyethylation of chitosan in aqueous medium is accompanied by the by-processes of hydrolysis and dehydrohalogenation of the -halopropionic acids yielding -hydroxypropionic acid, bis(2-carbox-yethyl) ether, and acrylic acid. Degree of carboxyethyl substitution (DS) of chitosan and the relative rates of the by-processes varied significantly depending on the conditions used and nature of the proton or halogen ion acceptor. At carboxyethylation of chitosan with the alkaline -bromopropionates, the DS increased in the order Cs+ Rb- K+ sim; Na+ Li-.
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14.

Вид документа : Статья из журнала
Шифр издания : 54/A 62
Автор(ы) : Kogan G., Skorik Yu.A., Zitnanova I., Krizkova L., Durackova Z., Gomes C. A. R., Yatluk Yu. G., Krajcovic J.
Заглавие : Antioxidant and antimutagenic activity of N-(2-carboxyethyl)chitosan
Место публикации : Toxicology and Applied Pharmacology . - 2004. - Vol. 201, № 3. - С. 303-310: ил.
Примечания : Библиогр.: с. 309-310 (49 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The antioxidant and antimutagenic activities of the novel carboxyethyl derivatives of chitosan with three different degrees of substitution have been assayed in vitro in the unicellular flagellate Euglena gracilis subjected to the action of genotoxic agents acridine orange and ofloxacin. It has been demonstrated that chitosan derivatives exhibit concentration-dependent protective antigenotoxic activity against both mutagens. It is suggested that different mechanisms may be involved in its protective action—antioxidant activity in case of ofloxacin-induced DNA damage, as well as possible interaction with the cell membrane that prevents acridine orange from reaching the genetic compartments and subsequent damaging DNA through intercalative binding. Direct adsorption of acridine orange on chitosan derivatives was ruled out as a possible mechanism of protection on the basis of spectrophotometric measurements. Dependence of the antimutagenic properties of the studied chitosan derivatives on the degree of substitution was reversed in experiments involving acridine orange and ofloxacin, which also indicated different mechanisms of protection involved in these two cases.????
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15.

Вид документа : Статья из журнала
Шифр издания : 54/M 57
Автор(ы) : Gavilan K.C., Pestov A. V., Garcia H.M., Yatluk Yu. G., Roussy J., Guibal E.
Заглавие : Mercury sorption on a thiocarbamoyl derivative of chitosan
Место публикации : Journal of Hazardous Materials. - 2009. - Vol. 165, № 1-5. - С. 415-426
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The grafting of thiourea on chitosan backbone allows synthesizing a thiocarbamoyl derivative that was very efficient for mercury sorption in acidic solutions. Though the sorption capacity is not increased compared to raw chitosan in near neutral solutions, this modification allowed maintaining high sorption capacity (close to 2.3 mmol Hg g-1) at pH 2. Mercury sorption in acidic solutions is not affected by the presence of competitor metals (such as Zn(II), Pb(II), Cu(II), Cd(II), Ni(II)) or the presence of nitrate anions (even at concentration as high as 0.8 M)). The presence of chloride or sulfate anions (0.8 M) decreased Hg(II) sorption capacity to 1 mmol Hg g-1. Kinetics are controlled by a combination of pseudo second-order reaction rate and resistance to intraparticle diffusion. Mercury desorption reached about 75% using thiourea (in HCl solution)
\\\\Expert2\\nbo\\Journal of Hazardous Materials\\2009, v.165.p.415.pdf
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16.

Вид документа : Статья из журнала
Шифр издания : 54/H 43
Автор(ы) : Bratskaya S.YU., Pestov A. V., Yatluk Yu. G., Avramenko V.A.
Заглавие : Heavy metals removal by flocculation/precipitation using N-(2-carboxyethyl)chitosans
Место публикации : Colloids and Surfaces A: Physicochemical and Engineering Aspects. - 2009. - Vol. 339, № 1-3. - С. 140-144
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Here we report on solution properties and flocculation performance of polyampholyte chitosan derivatives - N-carboxyethylated chitosans (CEC) - synthesized "in gel" by treatment of chitosan with acrylic acid. We show that carboxyethylation with the substitution degrees (DS) from 0.7 to 1.6 yields water-soluble derivatives, whose isoelectric points (IEP) range from 6.30 to 3.55. At pH 7.5 interaction of negatively charged CEC derivatives with positively charged colloids of the heavy metal hydroxides (Zn2+, Cu2+, Ni2+), serving as a model of postgalvanic wastewaters, results in lowering of electrokinetic potential of the hydroxide colloids and their precipitation at appropriate flocculant dose. Investigations of CEC flocculation performance depending on pH and DS show that the efficiency of metal removal decreases in the row Cu2+ Zn2+ Ni2+ corresponding to the row of the hydroxocomplex stability for these metals. The higher was pH of the system and DS of CEC derivative, the narrower was the flocculation window and the stronger was negative effect of flocculant overdosing on the efficiency of heavy metal removal. Based on the estimation of floc settling rates and the residual metal concentrations, we have concluded that the optimal DS of CEC derivatives for the precipitation of metal hydroxides is 0.7-1.0
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/O-66
Автор(ы) : Osintseva E. V., Pechishcheva N.V., Neudachina L.K., Shunyaev K.Yu., Yatluk Yu. G.
Заглавие : Optimisation and expansion of application area of N-aryl-3-aminoproppionic acids complexes with copper(II) in chemical analysis : доклад, тезисы доклада
Место публикации : "The optimization of composition, structure and properties of metals, oxides, composites, nano- and amorphous materials." Fourth Israeli-Russian Bi-National Workshop 2005, Jerusalem-Tel-Aviv, 19-25 June 2005 г. - Jerusalem-Tel-Aviv, 2005. - С. 207-211
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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18.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/Z 99
Автор(ы) : Zyablestov A. F., Yatluk Yu. G.
Заглавие : New method of synthesis of glycerylsilanes : доклад, тезисы доклада
Место публикации : Десятая всерос. конф. "Кремнийорганические соединения: синтез, свойства, применение", М., 26-30 мая 2005 г. : тез.докл. - М., 2005. - С. 2С13
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/A 10
Автор(ы) : Bratskaya S.YU., Golikov A., Pestov A. V., Voit A., Yatluk Yu. G., Avramenko V.A.
Заглавие : A generalized model of protolytic, complexing and colloidal properties of polyelectrolytes. Case study : N-(2-carboxyethyl)chitosans : доклад, тезисы доклада
Место публикации : EUCHIS 2009 - 9th International Conference of the European Chitin Society , Venice, Italy, 23-26 May 2009 : conference book. - Venice, Italy, 2009. - С. 21 (P1-5)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/S 45
Автор(ы) : Bratskaya S.Yu., Pestov A. V., Slobodyuk A., Avramenko V.A., Yatluk Yu. G.
Заглавие : Selective sorption of gold (III), platinum (IV) and palladium (II) : доклад, тезисы доклада
Место публикации : EUCHIS 2009 - 9th International Conference of the European Chitin Society , Venice, Italy, 23-26 May 2009 : conference book. - Venice, Italy, 2009. - С. 146 (P03-13)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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