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Browsing by Author "Gizatullin B."

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Application of the LASSO algorithm for fitting the multiexponential data of the NMR relaxometry

Bochkarev V.; Tyurin V.; Savinkov A.; Gizatullin B. (2018)

© 2018 Institute of Physics Publishing. All rights reserved. The problem of time series fitting by the sum of several exponentials with different decay parameters often arises analyzing the data of a physical experiment. ...
Disordering of phospholipid headgroups induced by a small amount of polyethylene oxide

Filippov A.; Munavirov B.; Gizatullin B.; Antzutkin O. (2013)

We present a 31P NMR spectroscopy study of planar glass-plate-oriented multi-bilayers of dimyristoylphosphatidylcholine (DMPC) with addition of polyethylene oxide (PEO). This work revealed the presence of a new component ...
Effect of a porous medium on the phase transitions and mobility of cyclohexane molecules

Gizatullin B.; Pimenov G. (2009)

The effect of a porous medium on the phase transitions and molecular mobility of cyclohexane at a liquid content corresponding to a monolayer is studied by pulsed NMR. The times of longitudinal T 1 and transverse T 2 ...
Investigation of transformer oil by nuclear magnetic relaxation and Z-scanning

Arkhipov R.; Gizatullin B.; Shkalikov A.; Kurakina O.; Turanova O.; Kozlov V.; Turanov A. (2013)

GK-grade transformer oil is investigated by methods of nuclear magnetic relaxation and Z-scanning. The size of the heterogeneous structures in the oil increases during its service. The solid-particle content in the liquid ...
Modular mobility investigation of polymer binder bitumen

Ayupov D.; Makarov D.; Murafa A.; Khozin V.; Khakimullin Y.; Sundukov V.; Khakimov A.; Gizatullin B. (2015)

© Published under licence by IOP Publishing Ltd. This paper is aimed to obtain polymer binder bitumen for the road applications with improved properties. Objectives included studying the degradation of crumb rubber during ...
Molecular Dynamics and Proton Hyperpolarization via Synthetic and Crude Oil Porphyrin Complexes in Solid and Solution States

Gizatullin B.; Gafurov M.; Murzakhanov F.; Vakhin A.; Mattea C.; Stapf S. (2021)

The use of vanadyl porphyrins either in synthetic compounds or naturally occurring in asphaltenes is investigated as a source of proton hyperpolarization via dynamic nuclear polarization (DNP) in nuclear magnetic resonance ...
Native Vanadyl Complexes in Crude Oil as Polarizing Agents for in Situ Proton Dynamic Nuclear Polarization

Gizatullin B.; Gafurov M.; Vakhin A.; Rodionov A.; Mamin G.; Orlinskii S.; Mattea C.; Stapf S. (2019)

Copyright © 2019 American Chemical Society. The presence of paramagnetic species such as vanadyl complexes (VO2+) and free carbon radicals in petroleum disperse systems (PDSs) such as crude oil, bitumen, or kerogen causes ...
Nuclear magnetic relaxation and phase transitions of diethylene glycol in Vycor porous glasses

Gizatullin B.; Pimenov G. (2010)

The times of longitudinal T 1 and transverse T 2 magnetic relaxation of protons of diethylene glycol in the bulk phase and in Vycor porous glasses with average pore radii of 4, 11, and 32 nm are measured by the pulse NMR ...
Paper estimability of heavy oil viscosity by nuclear magnetic resonances researchestitle

Musin K.; Bobb I.; Abdullin T.; Skirda V.; Gizatullin B.; Zaripov T. (2014)

Copyright © 2014, Society of Petroleum Engineers. This paper presents the results of laboratory and nuclear magnetic resonances researches of seventy-seven crude oil samples from the Devonian, Carboniferous and Permian ...
Proton NMR of water colloidal solutions of nanosized crystalline LaF3and LaF3: Gd3+ particles

Alakshin E.; Gizatullin B.; Zakharov Y.; Klochkov A.; Salikhov T.; Skirda V.; Tagirov M. (2015)

© 2015 AIP Publishing LLC. A study of the nuclear magnetic relaxation of water protons in a series of colloidal solutions of nanosized lanthanum trifluoride and lanthanum fluoride particles, doped with gadolinium (0.5%). ...
Proton-Radical Interaction in Crude Oil - A Combined NMR and EPR Study

Gizatullin B.; Gafurov M.; Rodionov A.; Mamin G.; Mattea C.; Stapf S.; Orlinskii S. (2018)

© 2018 American Chemical Society. We present a detailed study of electron/nuclear interaction in a specific crude oil by continuous-wave and pulsed EPR, electron-nuclear double resonance (ENDOR) at W-band (94 GHz), and ...
Spatial structure of heptapeptide Glu-Ile-Leu-Asn-His-Met-Lys, a fragment of the HIV enhancer prostatic acid phosphatase, in aqueous and SDS micelle solutions

Blochin D.; Aganova O.; Yulmetov A.; Filippov A.; Gizatullin B.; Afonin S.; Antzutkin O.; Klochkov V. (2013)

Prostatic acid phosphatase (PAP) is a protein abundantly present in human seminal fluid. PAP plays important role in fertilization. Its 39-amino-acid fragment, PAP(248-286), is effective in enhancing infectivity of HIV ...
Study of correlation of oil flow properties with nuclear magnetic resonance and self-diffusion characteristics

Zaripov T.; Gizatullin B.; Lozovoi A.; Abdullin T.; Musin K. (2016)

© Copyright 2016.Correlation curves of viscosity, average spin-spin relaxation time, and average self-diffusion for crude oil samples from Tatarstan oil fields have been obtained. Two different averaging models were used ...
Study of the Distribution of Organic Molecules in the Porous Space of Vycor Glasses

Gizatullin B.; Pimenov G. (2014)

© 2014, Springer-Verlag Wien. The melting crystallization processes of cyclohexane and dimethylsulfoxide adsorbed in porous glasses Vycor have been investigated by nuclear magnetic resonance method in a wide temperature ...

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