583 research outputs found
Igor Efimov: the path of a writer, publisher and editor
No full textL’objectif de ce travail est de faire découvrir l’œuvre d’Igor Efimov, écrivain, philosophe et éditeur russe, et de proposer une analyse de son itinéraire littéraire.
Ses débuts littéraires ont été marqués par la période dite du dégel en Russie soviétique. Peu après il commença à publier ses ouvrages littéraires et philosophiques à l’Ouest (sous le pseudonyme de Moscovite). Devant la pression des autorités qui se manifestait sous forme de menaces d’arrestation ou d’interdiction de publication, Efimov choisit l’émigration comme de nombreux écrivains, poètes et artistes qui faisaient partie de la culture non officielle de cette époque.
L’émigration aux Etats-Unis constitue une étape importante de son cheminement littéraire, car il y fonde sa propre maison d’édition Hermitage. C’est dans ce contexte que nous examinons les activités éditoriales d’Efimov.
Nous portons également notre attention sur Efimov romancier. L’analyse des romans de l’écrivain prend en compte leur aspect littéraire et philosophique.The present thesis focuses on the work of the Russian writer, philosopher and editor Igor Efimov and aims to analyse his literary path.
His literary beginnings were influenced by the period of ‘the thaw’ in Soviet Russia. Later he started to publish his books in the West (under the penname of Moscovite). Efimov realised that the growing pressure from the government could end up in his arrest or even prevent him from publishing, so he chose to emigrate as numerous other writers, poets and artists. They together accounted for the non-official culture of this period.
The emigration to the USA is considered as an important step in his literary career as it is there that he founded his own publishing house Hermitage. In this context the editorial activities of Igor Efimov are looked into.
Moreover Efimov is studied as a writer. The analysis of his novels takes into account their literary and philosophical aspects
mRNA expression levels in failing human hearts predict cellular electrophysiological remodelling: A population−based simulation study
No full textDifferences in mRNA expression levels have been observed in failing versus non-failing human hearts for several membrane channel proteins and accessory subunits. These differences may play a causal role in electrophysiological changes observed in human heart failure and atrial fibrillation, such as action potential (AP) prolongation, increased AP triangulation, decreased intracellular calcium transient (CaT) magnitude and decreased CaT triangulation. Our goal is to investigate whether the information contained in mRNA measurements can be used to predict cardiac electrophysiological remodeling in heart failure using computational modeling. Using mRNA data recently obtained from failing and non-failing human hearts, we construct failing and non-failing cell populations incorporating natural variability and up/down regulation of channel conductivities. Six biomarkers are calculated for each cell in each population, at cycle lengths between 1500 ms and 300 ms. Regression analysis is performed to determine which ion channels drive biomarker variability in failing versus non-failing cardiomyocytes. Our models suggest that reported mRNA expression changes are consistent with AP prolongation, increased AP triangulation, increased CaT duration, decreased CaT triangulation and amplitude, and increased delay between AP and CaT upstrokes in the failing population. Regression analysis reveals that changes in AP biomarkers are driven primarily by reduction in I, and changes in CaT biomarkers are driven predominantly by reduction in I and SERCA. In particular, the role of I is pacing rate dependent. Additionally, alternans developed at fast pacing rates for both failing and non-failing cardiomyocytes, but the underlying mechanisms are different in control and heart failure
Chronique des fouilles et découvertes archéologiques dans le Bosphore cimmérien (mer Noire septentrionale)
No full textMüller Christel, Abramov Andrei, Abramzon Mikhail G., Alexeieva Ekaterina, Bezruchenko Igor, Efimov Alexei, Gorlov Youri, Kuznetsov Vadim B., Maslennikov Alexandre, Malyshev Alexei, Savostina Elena, Tolstikov Vladimir, Zavoikine Alexei. Chronique des fouilles et découvertes archéologiques dans le Bosphore cimmérien (mer Noire septentrionale). In: Bulletin de correspondance hellénique. Volume 124, livraison 2, 2000. pp. 701-751
The Efimov effect of three-body Schrödinger operators
No full textAbstractThe author studies the Efimov effect of three-body Schrödinger operators. By use of the variational method, the effect is proved under the assumptions that pair potentials fall off with order O(¦x¦−ϱ), ϱ > 2, at infinity and that all three two-body subsystems have a zero resonance energy
Understanding and tuning Fe‐doping on Zn–Fe layered double hydroxide particle and photocatalytic properties
No full textZn-based layered double hydroxides (LDHs) are promising photocatalytic materials, but their synthesis faces environmental and economic challenges. Oxidative ionothermal synthesis (OIS) offers a green route for zinc oxide synthesis using ionic liquids. To reduce costs, the OIS method uses recovered zinc-containing mixed metal systems, such as electric arc furnace dust, instead of pure metallic Zn. Understanding the interaction of Zn with impure metals during oxidation is essential. This study employs 1-Butyl-3-methylimidazolium chloride ([BMIM]Cl) as the solvent and Fe-doped metallic Zn, the most common waste-stream metal, as the starting material. This study applies quartz crystal microbalance with dissipation to monitor product formation, and X-ray diffraction and scanning electron microscopy to characterize composition and morphology. Results show that FeCl2 doping accelerates the reaction, transforming simonkolleite to Zn–Fe LDH with tunable morphologies. A reaction mechanism for Zn in [BMIM]Cl with FeCl2 is proposed. Photocatalytic hydrogen production tests reveal a favorable hydrogen evolution rate of 20.9 μmol h−1 g−1 with 0.45 M FeCl2 doping, attributed to improved surface structure and crystallinity of the hydrotalcite
Aluminium deposition in EMImCl-AlCl<sub>3</sub> ionic liquid and ionogel for improved aluminium batteries
No full textAluminium batteries with non-aqueous electrolyte have initially focused on Lewis acidic ionic liquid systems with heavy Al2Cl7-anions that limit the specific capacity, energy and power. In order to develop the secondary aluminium batteries further for future energy storage beyond lithium-ion, high performance electrolytes that enable efficient aluminium deposition/dissolution must be developed. This work studied the electrodeposition of aluminium from both 1-ethyl-3-methylimidazolium chloride aluminium chloride (EMImCl-AlCl3) ionic liquids with different Lewis acidities, and their gel form- the ionogel. Thereby, cyclic voltammetry, in-operando atomic force microscopy and scanning electron microscopy coupled with energy dispersive X-ray diffraction measurements were used to determine the characteristics of aluminium deposition in the ionic liquid depending on the ratio of AlCl3 to EMImCl. Based on these insights, Lewis acidic and neutral ionic liquids were gelified with polyethylene oxide. The focus was on the feasibility of aluminium deposition in Lewis neutral ionogels containing only lightweight AlCl4-anions. It was proven for the first time that aluminium can be deposited from a Lewis neutral ionogel without any dendrite growth within a very wide potential stability window of 5 V but at a low coulombic efficiency of ≤60%
SPECTROSCOPY ON EXTREMELY WEAKLY-BOUND MOLECULES: COOPER PAIRS AND EFIMOV TRIMERS
No full textAuthor Institution: The James Franck institute and the Department of Physics, University of Chicago, Chicago, IL, 60637Recent research on ultracold atoms and molecules entered an exciting era in which atomic and molecular interactions can be fully controlled and engineered to simulate a broad range of few- and many-body phenomena in condensed matter, molecular physics and even nuclear physics. In this talk I will present two examples. The first example is degenerate Fermi gas with resonant interactions. Our studies of Fermion pairs from precision radio-frequency spectroscopy provide new views on many-body pairing and phase transitions in strongly interacting Fermi systems} \underline{\textbf305}, 1128 (2004)}. This work was ranked one of the top 10 science breakthroughs in year 2004 by Science magazine. The second one is the observation of a three-body Efimov state, which was conjectured in 1970 by a Russian physicist V. Efimov in the context of nuclear physics. Efimov trimers exist in general Bose systems when the binary interaction is resonantly enhanced. The observation of an Efimov state} \underline{\textbf440}, 315 (2006)} opens up new horizon to explore few-body physics in the quantum degeneracy regime} \underline{\textbf94}, 123201 (2005).}
Gorožane (Cittadini)
No full textLo scritto tratta l'attività dei Cittadini (Gorožane), gruppo al quale si possono ascrivere i nomi degli scrittori Boris Vachtin, Vladimir Gubin, Igor’ Efimov e Vladimir Maramzin
Data Acquisition for [Rodger\u27s] Roger’s Sock Device
No full textMentor: Igor Efimov
From the Washington University Undergraduate Research Digest: WUURD, Volume 8, Issue 1, Fall 2012. Published by the Office of Undergraduate Research, Joy Zalis Kiefer Director of Undergraduate Research and Assistant Dean in the College of Arts & Sciences
Differential Gene Remodeling in Overweight and Obese Patients with Heart Failure
No full textMentor: Igor Efimov
From the Washington University Undergraduate Research Digest: WUURD, Volume 9, Issue 1, Fall 2013. Published by the Office of Undergraduate Research.
Joy Zalis Kiefer Director of Undergraduate Research and Assistant Dean in the College of Arts & Sciences
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