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Orlov A.V.,Ufa State Academy of Economics and Service | Khazipova G.R.,RAS Institute of Organic Chemistry | Komissarova N.G.,RAS Institute of Organic Chemistry | Shitikova O.V.,RAS Institute of Organic Chemistry | And 2 more authors.
Chemistry of Natural Compounds | Year: 2011

Lupane-type triterpenoid derivatives containing a 2,3-annelated 1H-pyrrole or an N-vinylpyrrole moiety were synthesized by reaction of 28-OTr-lup-20(29)- en-3-one oxime and acetylene in KOH/DMSO superbase medium at atmospheric pressure. © 2011 Springer Science+Business Media, Inc.


Dolomatov M.Y.,Ufa State Academy of Economics and Service | Dezortsev S.V.,Bashkortostan Institute of Petrochemical Processing
International Polymer Science and Technology | Year: 2014

A linear dynamic viscosity compensation effect has been found in artificial "petroleum residue-polyolefin" systems. Knowledge of the features of this effect makes it possible to produce petroleum-polymer compounds with assigned rheological properties. © 2014 Smithers Information Ltd.


Features in the process of modeling the vectors of the input and output variables of petroleum recovery process control systems with different degrees of detail of their structures are considered. Methods of monitoring discharges of liquids at perforated depth intervals of water injection and petroleum producing wells of oil and gas deposits as the basic condition for implementing a real-time regime in these systems are proposed. Conditions for increasing the precision with which the parameters of the variables are monitored based on the hardware components employed in measurements of complex borehole media are considered. © 2016 Springer Science+Business Media New York


Dolomatov M.Yu.,Ufa State Academy of Economics and Service | Shulyakovskaya D.O.,Ufa State Academy of Economics and Service
Chemistry and Technology of Fuels and Oils | Year: 2013

A spectroscopic method based on the law correlating the physicochemical properties of substances and their integral electronic radiation absorption characteristics in the visible and/or UV range has been developed for determining the physicochemical properties of various multicomponent hydrocarbon systems. This method can be used for rapid monitoring of hydrocarbon feedstock quality and performance characteristics of oil refining and petrochemical plants. © 2013 Springer Science+Business Media New York.


Dolomatov M.Y.,Ufa State Academy of Economics and Service | Dezortsev S.V.,Ufa State Academy of Economics and Service
Journal of Engineering Physics and Thermophysics | Year: 2012

The presence of the compensation effect of dynamic viscosity for multicomponent systems produced in different ways (physical mixing, chemical reactions) is established. The growth in the entropy term ΔS as part of the preexponent of the Frenkel equation is accompanied by the change in the activation energy E a of viscous flow. An analysis of the available results shows that this phenomenon is universal in character for hydrocarbon systems. © 2012 Springer Science+Business Media New York.


Girfanova L.R.,Ufa State Academy of Economics and Service
Izvestiya Vysshikh Uchebnykh Zavedenii, Seriya Teknologiya Tekstil'noi Promyshlennosti | Year: 2013

The article is devoted to the actual question of increasing clothes shape stability, including usage of new interfacings. In agreement with the concept of clothes shape stability the ways of its ensure have been systematized and the variants of porous interfacing have been offered. Research of physical and mechanical properties of a material and its packages has confirmed the efficiency of its use in making clothes.


Khabibullina G.R.,Russian Academy of Sciences | Akhmetova V.R.,Russian Academy of Sciences | Kunakova R.V.,Ufa State Academy of economics and Service
Russian Journal of General Chemistry | Year: 2014

Cyclothiomethylation of o-phenylenediamine with CH2O and H 2S gives rise to 1,2,4,5-tetrahydrobenzo[d][1,3,6]thiadiazepine and 1,2,6,7-tetrahydrobenzo[f][1,3,5,8]dithiadiazonine, whereas m-phenylenediamine forms benzothiaza macroheterocycles of various structure, comprising 4-8 molecules of the starting diamine, formaldehyde, and hydrogen sulfide. 4,4′-Diaminodiphenyls give bis(1,3,5-dithiazinanes), along with oligomeric hetero(N,S,O)atomic compounds. © 2014 Pleiades Publishing, Ltd.


Khairullina R.R.,Russian Academy of Sciences | Akmanov B.F.,Ufa State Academy of Economics and Service | Tyumkina T.V.,Russian Academy of Sciences | Kunakova R.V.,Ufa State Academy of Economics and Service | Ibragimov A.G.,Russian Academy of Sciences
Russian Journal of Organic Chemistry | Year: 2012

Effi cient method was developed for thiols aminomethylation using N,N,N',N'-tetra-methylmethanediamine in the presence of Sm and Fe salts. Aminosulfi des were obtained in high yields and selectivity. © Pleiades Publishing, Ltd., 2012.


Kozine I.,Technical University of Denmark | Krymsky V.,Ufa State Academy of Economics and Service
International Journal of General Systems | Year: 2012

The approach to deriving interval-valued reliability measures described in this paper is distinctive from other imprecise reliability models in that it overcomes the issue of having to impose an upper bound on time to failure. It rests on the presupposition that a constant interval-valued failure rate is known possibly along with other reliability measures, precise or imprecise. The Lagrange method is used to solve the constrained optimization problem to derive new reliability measures of interest. The obtained results call for an exponential-wise approximation of failure probability density function if only partial failure information is available. An example is provided. © 2012 Copyright Taylor and Francis Group, LLC.


Akhmetova V.R.,Russian Academy of Sciences | Rakhimova E.B.,Russian Academy of Sciences | Minnebaev A.B.,Russian Academy of Sciences | Kunakova R.V.,Ufa State Academy of Economics and Service | Galimzyanova N.F.,Russian Academy of Sciences
Russian Journal of Organic Chemistry | Year: 2012

Cyclothiomethylation was performed of heterochain (O, S-S, NH) α,ω-diamines with formaldehyde and H 2S in aqueous medium at 20-60°C to obtain new α,ω-bis(1,3,5-dithiazinanes). The cyclocondensation of N-(3-aminopropyl)butane-1,4-diamine (spermidine), formaldehyde, and H 2S proceeds effi ciently in the medium of BuOH-H 2O at 0°C and leads to the formation of previously unknown O,S-containing macroheterocycle, 1,7-dioxa-3,5,9,11-tetrathiacyclododecane. A fungicidal activity was found in 5,5'-(3,6-dioxaoctane-1,8-diyl)bis- 1,3,5-dithiazinane with respect to microscopic fungi affecting agriculture. © Pleiades Publishing, Ltd., 2012.

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