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1.
Correlation of periodic
variations of continental plate displacement relative velocities,
sedimentation
-rate, and oil deposit formation time / V. P. Aparin> // Doklady Akademii Nauk. - 1983. -
Vol. 270
,
Is. 1
. - P. 161-164. - Cited References: 14 . - ISSN 0002-3264
WOS
Держатели документа:
L.V. Kirensky Inst. Phys., Siberian Branch, USSR Acad. Sci., Krasnoyarsk, Russia
Доп.точки доступа:
Aparin, V. P.; Апарин, Вадим Петрович
}
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2.
Nesterov, A. I.
Geometric phases and quantum phase transitions in open systems / A. I. Nesterov, S. G. Ovchinnikov> // Phys. Rev. E. - 2008. -
Vol. 78
,
Is. 1
. - Ст. 15202,
DOI
10.1103/PhysRevE.78.015202. - Cited References: 29 . - ISSN 1539-3755
РУБ
Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
POINTS
DEGENERACIES
Кл.слова (ненормированные):
Chlorine compounds
--
Electron tunneling
--
Ferromagnetism
--
Ising model
--
Magnetic fields
--
Magnetism
--
Open systems
--
Quantum electronics
--
Quantum optics
--
Sedimentation
--
Effective Hamiltonian
--
Eigenvalues
--
First orders
--
Geometric phase
--
Geometric phases
--
Ground-state
--
Hermitian
--
One-dimensional
--
Open quantum systems
--
Quantum phase transition
--
Quantum phase transitions
--
Transverse-magnetic fields
--
Phase transitions
Аннотация:
The relationship is established between quantum phase transitions and complex geometric phases for open quantum systems governed by a non-Hermitian effective Hamiltonian with accidental crossing of the eigenvalues. In particular, the geometric phase associated with the ground state of the one-dimensional dissipative Ising model in a transverse magnetic field is evaluated, and it is demonstrated that the related quantum phase transition is of the first order.
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Держатели документа:
[Nesterov, Alexander I.] Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44420, Jalisco, Mexico
[Ovchinnikov, S. G.] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Departamento de Fisica, CUCEI, Universidad de Guadalajara, Av. Revolucion 1500, Guadalajara, Codigo Postal 44420, Jalisco, Mexico
L. V. Kirensky Institute of Physics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660041, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
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3.
Morozov, E. V.
MRI Comparative Study of Container Geometry Impact on the PMMA Spheres
Sedimentation
/ E. V. Morozov, O. V. Shabanova, O. V. Falaleev> // Appl. Magn. Reson. - 2013. -
Vol. 44
,
Is. 5
. - P. 619-636,
DOI
10.1007/s00723-012-0432-8. - Cited References: 31 . - ISSN 0937-9347
РУБ
Physics, Atomic, Molecular & Chemical + Spectroscopy
Рубрики:
OPAL PHOTONIC CRYSTALS
SUSPENSIONS
PARTICLES
VELOCITY
Аннотация:
Nuclear magnetic resonance (NMR) imaging results are presented for the comparative study of
sedimentation
of the polymethylmethacrylate colloidal suspensions with spherical particle diameters of 475, 350 and 255 nm. The time evolution of the particle volume fraction in the sedimenting system, velocity of the fluid/suspension interface, interface broadening, and sediment growth velocity are measured against the system concentration as well as the container geometry. Using the experimental data the hindered settling function is evaluated. The influence of the container geometry on the parameters defining the hindered settling function in different approaches is evaluated for the first time. The limiting value of the particle diameter is estimated at which the container geometry has no impact any longer. This effect can be explained by the microscale structure persisting at low Peclet numbers. In addition, the influence of the container geometry on interface broadening and sediment formation for different particle diameters and volume fractions is studied. Spontaneous sediment packing induced by a modified container geometry has been found. NMR imaging has proven to be a highly efficient research tool for studying
sedimentation
at low Peclet numbers.
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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Special Design & Technol Bur Nauka, Krasnoyarsk 660049, Russia
Доп.точки доступа:
Shabanova, O. V.; Falaleev, O. V.; Морозов, Евгений Владимирович
}
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4.
Analysis of diatom
algae from the water column and bottom sediments of Shira Lake (Khakassia, Russia) / G. N. Bolobanschikova [et al.]> // Contemp. Probl. Ecol. - 2015. -
Vol. 8
,
Is. 2
. - P. 173-185,
DOI
10.1134/S1995425515020031. - Cited References: 23. - This work was supported by Russian Foundation for Basic Research, project no. 13-05-00429-a and the Biodiversity Program for Basic Research, Russian Academy of Sciences, project no. 30.8. . - ISSN 1995. - ISSN 1995-4263. -
РУБ
Ecology
Кл.слова (ненормированные):
paleolimnology
--
diatom algae
--
meromictic lake
--
sedimentation
--
Cyclotella choctawhatcheeana
--
Aulacoseira valida
--
Aulacoseira ambigua
Аннотация:
Lake Shira as a meromictic lake is object of interest for paleolimnological studies. In May 2011 core samples were collected from the bottom of Lake Shira and the species composition of diatom algae, which serve as bioindicators of the state of the lake, were studied. In addition, in 2012, seasonal water samples and material from sediment traps were collected and the species composition of diatoms in them was analyzed. The results of the analysis showed that the lake, like in previous years of research, was dominated by Cyclotella choctawhatcheeana Prasad. Diatoms were found twice in the studied core above the white carbonate layers and were absent in other layers. The species living in the lake at present were observed down to the first white carbonate layer, including the predominant Cyclotella choctawhatcheeana. This fact presumably proves the consistency of the species composition of diatoms and the overall stable condition of the lake since 1946 (Rogozin et al., 2005). Down to the second white carbonate layer, the dominant species were Aulcosira valida (Grunow) Krammer and Aulcosira italica (Grunow) Simonsen. Nitzchia sigmodea (Nitzsch) W. Smith and Fragilaria construens var. venter (Ehrenberg) Grunow were also observed at these depths, dating approximately to 1655-1690. These are freshwater species that belong to the diatoms of arctic, alpine, and temperate latitudes, which develop in shallow waters under moderate temperature conditions. This fact suggests that Lake Shira was less salty in the middle and end of the 17th century than today.
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Публикация на русском языке
Анализ диатомовых водорослей водной толщи и донных отложений озера Шира (Хакасия, Россия) [Текст] / Г. Н. Болобанщикова [и др.] // Сиб. экол. журн. - Новосибирск : Изд-во СО РАН, 2015. - Т. 22 № 2. - С. 215-228
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Limnol Inst, Siberian Branch, Irkutsk 664033, Russia.
Krasnoyarsk State Med Univ, Krasnoyarsk 660022, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Bolobanschikova, G. N.; Rogozin, D. Y.; Firsova, A. D.; Rodionova, E. V.; Degermendzhy, N. N.; Shabanov, A. V.; Шабанов, Александр Васильевич
}
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5.
Morozov, E. V.
Probing flocculant-induced asphaltene precipitation via NMR imaging: from model toluene-asphaltene systems to natural crude oils / E. V. Morozov, O. N. Martyanov> // Appl. Magn. Reson. - 2016. -
Vol. 47
,
Is. 2
. - P. 223-235,
DOI
10.1007/s00723-015-0741-9. - Cited References:46. - This research was performed with the financial support of Russian Science Foundation (project no. 15-19-00119). . - ISSN 0937-9347. - ISSN 1613-7507
РУБ
Physics, Atomic, Molecular & Chemical + Spectroscopy
Рубрики:
PETROLEUM ASPHALTENES
MOLECULAR-DYNAMICS
AGGREGATION
MICROSCOPY
SCATTERING
RESONANCE
SEDIMENTATION
ASSOCIATION
CALORIMETRY
RELAXATION
Аннотация:
An nuclear magnetic resonance (NMR) imaging approach for studying flocculant-induced asphaltene precipitation processes is introduced in this report. Unlike commonly accepted techniques, which primarily measure aggregation processes on the submicron scale (the level of asphaltene molecules and their aggregates), NMR imaging demonstrates the capability to obtain new useful information about bulk system behavior on the macro scale. To reveal the capabilities of the method, the model toluene-asphaltene system and two samples of natural crude oils with different chemical composition and physical properties (such as asphaltene content and density) were employed for experiments. The process of colloidal suspension formation and two different patterns of its evolution were observed depending on both the asphaltene content and the flocculant concentration. In the first pattern, the flocculant-induced precipitation leads to the slow uniform compacting of the suspension and descent of the
sedimentation
front, whereas the second pattern is characterized by sediment accumulation and the upwards drift of the front. It was found that the behavior of the precipitated asphaltenes in the model system correlates well with those observed in natural crude oils. The results achieved in this work are in agreement with the data obtained previously via other techniques. Thus, NMR imaging proved to be an efficient method for probing flocculant-induced precipitation in crude oils.
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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Akademgorodok 50-24, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Pr Ak Lavrentieva 5, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Pirogova St 2, Novosibirsk 630090, Russia.
Доп.точки доступа:
Martyanov, O. N.; Морозов, Евгений Владимирович; Russian Science Foundation [15-19-00119]
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