News Article | December 19, 2016
10th annual conference on Russian and China will be held at Kazan University 2017 is anniversary year for all Russian sinologists. In the approaching 2017 Russian academic Oriental Studies will turn 200 years, and it will be 180 years since formation of first department of Chinese verbal folklore in Kazan Imperial University; 60 years since foundation of Russian-Chinese friendship Community and 10 years since foundation of Confucius Institute of Kazan (Volga Region) Federal University (CI KFU). Prior to these events we welcome you to participate in X Anniversary International Research and Practice Conference "RUSSIA - CHINA: HISTORY AND CULTURE". First international research and practice conference "Russia-China: History and Culture" in October, 2007 was coincided with the opening of Confucius Institute in Kazan University. During this period it turned into important academic event - representatives of academic and college science of Russian Federation, China and other countries can share their opinion on questions of Russian-China cooperation. 1. Current issues of Chinese language and literature 2. Chinese language teaching methodology 3. Foreign policy of China and Russian-Chinese relations 4. Chinese economics and Russian-Chinese relation in economic sphere 5. Chinese history 6. Chinese philosophy and culture 7. Young sinologists' section 1. International economic strategy of China: "One zone - one way" 2. Ideology of Chinese state-building and future reforms 3. Classic sinology in an age of changing world Public lectures of leading scientists of Russia and China on the questions of development and cooperation of two counties are also scheduled for the conference. All participants of conference, guests and everyone interested are welcome to take part in these lectures. Lecturers, academic researchers, students of bachelor and master degrees and Ph. D. candidates are welcomed to participate in Conference. Publishing of student's articles is possible only in co-authorship with their academic advisers (materials and proposal should be signed by student and his/her academic adviser, also recommendation letter of academic adviser should be handed). General session of Conference and functioning of sections will be hold in Kazan (Volga Region) Federal University. Russian, Chinese and English are the working languages of Conference. Pre-reviewed source book will be published by the beginning of Conference. Source book is published with ISBN. In order to be published participants should provide next materials before 15 of April: * Information about author(-s) (for bachelor and master students and Ph. D. candidates information about academic adviser).
Mukhamedshin I.R.,University Paris - Sud |
Mukhamedshin I.R.,Kazan University |
Alloul H.,University Paris - Sud
Physical Review B - Condensed Matter and Materials Physics | Year: 2011
We report a complete set of 59Co NMR data taken on the x=2/3 phase of sodium cobaltates Na xCoO 2 for which we have formerly established the in-plane Na ordering and its three-dimensional stacking from a combination of symmetry arguments taken from Na and Co NQR/NMR data. Here, we resolve all the parameters of the Zeeman and quadrupolar Hamiltonians for all cobalt sites in the unit cell and report the temperature dependencies of the NMR shift and spin lattice relaxation T 1 data for these sites. We confirm that three nonmagnetic Co3 + (Co1) are in axially symmetric positions and that the doped holes are delocalized on the nine complementary magnetic cobalt sites (Co2) of the atomic unit cell. The moderately complicated atomic structure resumes then in a very simple electronic structure in which the electrons delocalize on the Co2 kagome sublattice of the triangular lattice of Co sites. The observation of a single temperature dependence of the spin susceptibilities indicates that a single band picture applies, and that the magnetic properties are dominated by the static and dynamic electronic properties at the Co2 sites. We evidence that they display a strong in-plane electronic anisotropy initially unexpected but which agrees perfectly with an orbital ordering along the kagome sublattice organization. These detailed data should now permit realistic calculations of the electronic properties of this compound in order to determine the incidence of electronic correlations. © 2011 American Physical Society.
News Article | February 2, 2016
Projected heavy oil and viscous oil reserves in Russia are up to 40 to 50 billion barrels and a significant portion of that volume lies within Tatarstan. Heavy oil extraction requires special technological processes, and research in that direction is currently the center of attention in oil-rich countries like the U.S., Canada, Venezuela and Russia. Researchers at Kazan University with their peers from Stanford University have been exploring catalysts for heavy oil extraction, and have published their latest results in Energy and Fuels. Senior Researcher at the Interbedding Combustion Lab Andrey Galukhin speaks about the research: "Calorimetric experiments show that crude oil with higher saturate content and low resin fraction has higher heating value. Additionally, the crude oils undergo two major transitions when subjected to an oxidizing and constant rate environment known as low- and high-temperature oxidations at each heating rate studied. There are ways to pump extremely hot steam into a reservoir to liquefy viscous oil, what facilitates the extraction. However, there are limitations - if the reservoir more than 1 km deep, steam loses most of its heat energy. That is why in-situ combustion is interesting for us—the heat for liquefying is generated in the reservoir. Our group works on catalysts that provide combustion during this process. The catalysts help to oxidize oil deposits in reservoirs that are relatively resistant to burning". The catalysts developed by the group have already shown promising results in lab tests, and the work continues. Dr. Galukhin won a grant for this particular work from the Russian Foundation for Basic Research in 2015. Explore further: Exploring new methods of thermal recovery
Hennig J.,Albert Ludwigs University of Freiburg |
Il'Yasov K.A.,Kazan University |
Weigel M.,Albert Ludwigs University of Freiburg
Magnetic Resonance in Medicine | Year: 2012
This article presents the basic principles of the superstimulated echo mechanism and shows preliminary results of its application to T 1-weighted imaging with positive T 1-contrast. A superstimulated echo scheme uses a preparation of square-wave modulated, periodically inverted z-magnetization, which after signal evolution during the mixing time TM is fully converted into transverse magnetization. This avoids the 50% signal loss of a conventional stimulated echo. Furthermore, its implementation as a preparation module for standard turbo spin echo (TSE) imaging allows producing images with positive T 1-contrast. Magn Reson Med, 2012. © 2011 Wiley Periodicals, Inc. Copyright © 2011 Wiley Periodicals, Inc.
News Article | November 11, 2016
Kazan University has demonstrated really impressive results in its hydrocarbon research recently. We talked about one of such breakthroughs in our article not long ago. Interestingly, a paper on this new research was also published in Energy and Fuels. Senior Research Associate of the In-Situ Combustion Lab Andrey Galukhin explains, "In-situ combustion is one of the most promising hydrocarbon recovery methods of today and, probably, tomorrow. It can help not only extract oil from deeper horizons but also improve the quality of recovered material. That's a new level. However, there are some issues to be resolved. For example, we at our lab now work on the stability of the combustion front -- this parameter is the key to all the unique opportunities provided by this technology. We have learned to stabilize the front with catalysts". The catalysts can not only stabilize the front but also accelerate its movement along a reservoir. The current result is 10-fold increase. However, this is not what makes the research unique. KFU employees are the first in the world to try revealing the catalysts' work mechanisms. "It's basically impossible to observe a catalyst inside a reservoir. The total mass of catalysts used in a reaction is too miniscule. Maybe that's the reason for us being the pioneers in this area. We have had to unite different methods to achieve something. We collaborate with the Institute of Physics, something unheard of previously. Such an opportunity only appeared because of SAU EcoOil", adds Dr. Galukhin. It's early to speak about a revolution in oil recovery, however. The idea is to create a model that can later be tested with specific catalysts. But some companies have already shown interest. A few days ago Baker Hughes and KFU held negotiations considering in-situ combustion catalysts.
News Article | November 30, 2016
Home > Press > New technology of ultrahigh density optical storage researched at Kazan University: The ever-growing demand for storage devices stimulates scientists to find new ways of improving the performance of existing technologies Abstract: According to current estimates, dozens of zettabytes of information will need to be placed somewhere by 2020. New physical principles must be found, the ones that facilitate the use of single atoms or molecules as basic memory cells. This can be done with the help of lasers. However, the existing methods of optical storage are limited to the diffraction limit (~500 nm), so the respective recording density is roughly ~1 Gb per square decimeter. The limitation can be circumvented by the use of highly localized lasers that can manipulate the spatial orientation of single molecules. The expected storage capacity in this case is up to 1 Pb/dm2 which is approximately equal to 1 million standard DVDs. Regulating radiation beyond the diffraction limit with the help of optical nanoantennas and nanoresonators is the basis for three current research areas -- refractory plasmonics, organic photovoltaics, and near-field optical memory. All of them are in development at the Nano Optics Lab of KFU (headed by Associate Professor Sergey Kharintsev). Thanks to subdiffraction localization and field enhancement of light single molecule detection technologies develop rapidly. Dr. Kharintsev's team has used this approach for near-field optical recording. Their research appeared in Nanoscale in November 2016. The authors proposed a new principle of optical storage based on tip-enhanced Raman scattering effect. Localization of laser light is provided by an optical nanoantenna that is illuminated by a focused laser beam with radial and azimuthal polarization. This approach was developed on the basis of optical anisotropy of azo-dye polymer films (published in ACS Photonics). The azo-dyes are orientated perpendicularly to the polarization direction under polarized light. This has proven to be a tricky result to achieve because near-field polarization depends on the geometry and material of the optical antenna (see Physical Review). Switching between radial and azimuthal polarization capacitates the recording of optical information in the azo-dye absorption band and reading beyond that band. The switching speed depends on the local mobility of the dyes in glassy environment - a parameter that for polymer films is critically dependent on their thickness. The team plans to create a prototype of organic near-field optical memory of up 1 Pb/dm2 density. The following advances in subdiffraction technology will be linked to laser beams with orbital momentum -- such research may further down the road help additionally increase storage density. Optical disks with petabit capacity will majorly change the efficiency and productivity of cloud services and data centers and disrupt the global storage market. The development of big storage is linked with energy-independent high-speed memory technologies that aim to unite the advantages of random access memory and archive memory. Alternative memory types, such as quantum memory, spin-transfer torque memory, memristors, and ferroelectrical memory, are all still far from practical use. For more information, please click If you have a comment, please us. Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
News Article | December 2, 2016
A team headed by Professor Albert Rizvanov, director of the Gene and Cell Technologies Open Lab, created a gene therapy drug that encodes growth factors for the stimulation of blood vessel and bone formation. The combination was highly effective in a patient admitted to the Republican Clinical Hospital in Kazan, Russia. The treatment was approved by the ethical committee, supported by the Ministry of Healthcare of Tatarstan and published in BioNanoScience. Professor Rizvanov explains: «We combined a demineralized bone transplant with recombinant genetic material, which carries genes for vascular endothelial growth factor, to stimulate new blood vessel growth (angiogenesis), and bone morphogenetic protein to stimulate bone growth (osteogenesis). Thus survival of transplant and bone tissue formation was achieved at the desired location. We were able to translate our basic and pre-clinical research and are the first to document the efficacy of such therapy in a real clinical case of pseudarthrosis». As the team leader noted, for a long time clinicians have tried standard methods of bone regeneration - osteosynthesis and osteoplasty - when an absent bone part is replaced with allogenic, cadaveric or demineralized bone matrix. In the latter case cells and minerals are removed from an animal bone tissue, and only the matrix is left - a "bone-like sponge" that can be used to fill in defects in the bone to stimulate formation of a new bone. However, current procedures often result in complications, such as resorption of the transplant. Parts of the problem are poor blood supply and low levels of pro-osteogenic growth factors. Our therapy, a combination of demineralized bone with gene therapy, is a promising solution for the currently existing complication problems in pseudarthrosis and other bone defects and fracture treatments. We now plan to offer such innovative treatments at the Kazan University Clinic as a part of a new clinical trial program at strategic academic unit Translational 7P Medicine for biomedical and translational research.
Bianchi M.,University of Milan |
Konnov I.V.,Kazan University |
Pini R.,University of Milan Bicocca
Journal of Global Optimization | Year: 2010
The aim of this work is to analyze lexicographic equilibrium problems on a topological Hausdorff vector space X, and their relationship with some other vector equilibrium problems. Existence results for the tangled lexicographic problem are proved via the study of a related sequential problem. This approach was already followed by the same authors in the case of variational inequalities. © 2009 Springer Science+Business Media, LLC.
Konnov I.V.,Kazan University |
Dyabilkin D.A.,Kazan University
Journal of Global Optimization | Year: 2011
We consider a general equilibrium problem in a finite-dimensional space setting and propose a newcoercivity condition for existence of solutions.We also showthat it enables us to create a broad family of regularization methods with preserving well-definiteness and convergence of the iteration sequence without additional monotonicity assumptions. Some examples of applications are also given. © Springer Science+Business Media, LLC. 2010.
Konnov I.V.,Kazan University
Journal of Global Optimization | Year: 2013
We consider vector models for complex systems with spatially distributed elements which arise in communication and transportation networks. In order to describe the flow distribution within such a network, we utilize the equilibrium approach, which extends the shortest path one. Being based on this approach, we investigate several networking control problems, with taking into account many factors. As a result, general vector equilibrium problems models with complex behavior of elements are suggested. In particular, they involve elastic demand functions. Due to the presence of many factors, we utilize multicriteria models with respect to different preference relations. The corresponding problems admit efficient solution methods within optimization and equilibrium frameworks. © 2011 Springer Science+Business Media, LLC.