1,061 research outputs found
Solventless VOC chemisorption by silver metallocycles
No full textSolventless VOC chemisorption by silver metallocycles
Oumarou C. S.a, Tekarli S.,b Nesterov V.,b Omary M. A.,b Burini A.,a Galassi R.,a
aSchool of Science and Technology, Chemistry Division, University of Camerino, Via S. Agostino 1, 62032 Camerino; e-mail: [email protected]
b Department of Chemistry, University of North Texas, Denton, TX 76203, USA
Prior work has focused on detection/sensing aspects of VOCs,[1] this work proposes a method for their simultaneous filtration and removal through their strong chemisorption to a silver(I) metallocyclic trimer.[2] A solid cyclotrimer can quantitatively remove entire molar integers of VOCs (1-3 equivalents of VOCs per mole of the nitrated trimer) from the vapor phase in a solventless “green” chemical process, which is unprecedented for this class of cyclic d10 complexes.
Figure 1. Illustration of quadrupole-dipole interactions involving the [Ag(μ-Pz-2CF3)]3 or [Ag(3,5-(NO2)2pz)]3 trimers and acetonitrile using M06/CEP-31G(d). MEP surfaces are plotted in two manners, either mapped on electron density surfaces (rainbow plots with the color scale shown; isodensity = 0.0004) or positive (blue) and negative (red) regions in space (range = ± 2.2 a. u.; isodensity = 0.02)
[1] Yaghi et al., PNAS 2008, 105, 11623
[2] R. Galassi, S. Ricci, A. Burini, A. Macchioni, L. Rocchigiani, F. Marmottini, S. Tekarli, V. Nesterov, M. A. Omary, J. Am. Chem. Soc., 2013, submitted
Effective action and heat kernel in a toy model of brane-induced gravity
No full textWe apply a recently suggested technique of the Neumann-Dirichlet reduction to a toy model of brane-induced gravity for the calculation of its quantum one-loop effective action. This model is represented by a massive scalar field in the (d+1)-dimensional flat bulk supplied with the d-dimensional kinetic term localized on a flat brane and mimicking the brane Einstein term of the Dvali-Gabadadze-Porrati (DGP) model. We obtain the inverse mass expansion of the effective action and its ultraviolet divergences which turn out to be nonvanishing for both even and odd spacetime dimensionality d. For the massless case, which corresponds to a limit of the toy DGP model, we obtain the Coleman-Weinberg type effective potential of the system. We also obtain the proper-time expansion of the heat kernel in this model associated with the generalized Neumann boundary conditions containing second-order tangential derivatives. We show that in addition to the usual integer and half-integer powers of the proper time this expansion exhibits, depending on the dimension d, either logarithmic terms or powers multiple of one quarter. This property is considered in the context of strong ellipticity of the boundary value problem, which can be violated when the Euclidean action of the theory is not positive definite
Origin of inflation in CFT driven cosmology: R 2 -gravity and non-minimally coupled inflaton models
No full textWe present a detailed derivation of the recently suggested new type of hill-top inflation [arXiv:1509.07270] originating from the microcanonical density matrix initial conditions in cosmology driven by conformal field theory (CFT). The cosmological instantons of topology S-1 x S-3, which set up these initial conditions, have the shape of a garland with multiple periodic oscillations of the scale factor of the spatial S-3-section. They describe underbarrier oscillations of the inflaton and scale factor in the vicinity of the inflaton potential maximum, which gives a sufficient amount of inflation required by the known CMB data. We build the approximation of two coupled harmonic oscillators for these garland instantons and show that they can generate inflation consistent with the parameters of the CMB primordial power spectrum in the non-minimal Higgs inflation model and in R-2 gravity. In particular, the instanton solutions provide smallness of inflationary slow-roll parameters is an element of and eta < 0 and their relation is an element of similar to eta(2) characteristic of these two models. We present the mechanism of formation of hill-like inflaton potentials, which is based on logarithmic loop corrections to the asymptotically shift-invariant tree-level potentials of these models in the Einstein frame. We also discuss the role of R-2-gravity as an indispensable finite renormalization tool in the CFT driven cosmology, which guarantees the nondynamical (ghost free) nature of its scale factor and special properties of its cosmological garland-type instantons. Finally, as a solution to the problem of hierarchy between the Planckian scale and the inflation scale we discuss the concept of a hidden sector of conformal higher spin fields
Astronomy Letters, V. 26, I. 04
No full textAstronomy Letters -- April 2000
Volume 26, Issue 4, pp. 199-267
Observations of the Gamma-Ray Flux from the Galaxy Mk 501
N. A. Andreeva, Yu. L. Zyskin, O. R. Kalekin, Yu. I. Neshpor, A. A. Stepanyan, V. P. Fomin, N. N. Chalenko, and V. G. Shitov
pp. 199-203 Full Text: PDF (91 kB)
Observations of Extragalactic Radio Sources at 36 GHz
N. S. Nesterov, A. E. Volvach, and I. D. Strepka
pp. 204-207 Full Text: PDF (87 kB)
On the Internal Structure of Relativistic Jets
V. S. Beskin and L. M. Malyshkin
pp. 208-218 Full Text: PDF (129 kB)
Photometric Deprojection of Edge-on Galaxies
D. V. Bizyaev
pp. 219-224 Full Text: PDF (66 kB)
Analysis of HST Ultraviolet Spectra for T Tauri Stars: RU Lup
S. A. Lamzin
pp. 225-232 Full Text: PDF (152 kB)
A Photometric and Spectroscopic Study of the Herbig Ae/Be Star XY Per
S. Yu. Melnikov and O. V. Ezhkova
pp. 233-243 Full Text: PDF (499 kB)
Continuum Spectrum of the Star Theta1 Ori C
E. A. Vitrichenko
pp. 244-249 Full Text: PDF (76 kB)
Dynamical Stability of Triple Stars
V. V. Orlov and A. V. Petrova
pp. 250-260 Full Text: PDF (105 kB)
Internal Rotation of the Sun as Inferred from GONG Observations
E. A. Gavryuseva, V. G. Gavryusev, and M. P. Di Mauro
pp. 261-267 Full Text: PDF (106 kB)Archived web conten
Astronomy Letters, V. 28, I. 11
No full textAstronomy Letters -- November 2002
Volume 28, Issue 11, pp. 721-792
Studies of the Quasar OH 471
N. S. Nesterov and A. E. Volvach
pp. 721-726 Full Text: PDF (246 kB)
Polarization Spectra of Synchrotron Radiation and the Plasma Composition of Relativistic Jets
V. V. Zheleznyakov and S. A. Koryagin
pp. 727-744 Full Text: PDF (394 kB)
X-ray Emission from Accretion Disks in Active Galactic Nuclei
V. F. Suleimanov, K. K. Ghosh, R. A. Austin, and B. D. Ramsey
pp. 745-754 Full Text: PDF (246 kB)
Two-Dimensional Spectroscopy of Double-Barred Galaxies
A. V. Moiseev
pp. 755-768 Full Text: PDF (636 kB)
Pulsar Magnetic Field for an Infinitely Conductive Accretion Disk
N. R. Sibgatullin and T. A. Doroshenko
pp. 769-772 Full Text: PDF (131 kB)
The Spectroscopic and Interferometric Orbit of Gliese 150.2
Yu. Yu. Balega, A. A. Tokovinin, E. A. Pluzhnik, and G. Weigelt
pp. 773-777 Full Text: PDF (144 kB)
Haro's Star (PG 1444+236): A Hot Subdwarf of the Galactic Halo?
V. P. Arkhipova, N. P. Ikonnikova, G. V. Komissarova, and V. F. Esipov
pp. 778-782 Full Text: PDF (177 kB)
Radial Oscillations of Coronal Loops and Microwave Radiation from Solar Flares
Yu. G. Kopylova, A. V. Stepanov, and Yu. T. Tsap
pp. 783-791 Full Text: PDF (228 kB)
ERRATA
Erratum: "Orbital Evolution of Saturn's New Outer Satellites and Their Classification" [Astronomy Letters 27, 455 (2001)]
M. A. Vashkov'yak
p. 792 Full Text: PDF (58 kB)Archived web conten
Doklady Physics V. 48, I. 11
No full textDoklady Physics -- November 2003
Volume 48, Issue 11, pp. 599-656
PHYSICS
Barrier Capacitance in the Case of the Polyacenequinone Contact with Aluminum
R. V. Afanas'eva, T. G. Ermakova, A. A. Maksimov, and M. G. Voronkov
pp. 599-601 Full Text: PDF (44 kB)
Energy of Interatomic Bonds, Phonon Spectra, and Polymorphism of Ca and Sr Chemical Elements
N. N. Sirota
pp. 602-607 Full Text: PDF (83 kB)
On Calculating Spectral Intensities for Anomalous Average Values in the Theory of Superconductors with Strong Electron Correlations
V. V. Val'kov, D. M. Dzebisashvili, and A. S. Kravtsov
pp. 608-611 Full Text: PDF (47 kB)
Stepwise Transition from Elastic to Elastoplastic Deformation at the Initial Stage of Nanoindentation
Yu. I. Golovin and S. N. Dub
pp. 612-614 Full Text: PDF (56 kB)
Distribution Functions in Scale Transformations of 1/f Fluctuations
V. P. Koverda and V. N. Skokov
pp. 615-618 Full Text: PDF (65 kB)
Traveling Pulse of an Exothermic Reaction
E. N. Rumanov
pp. 619-621 Full Text: PDF (41 kB)
Model of Redistribution of Components in Surface Layers of Amorphous Alloys in a Metal–Metalloid System Under Deformation and Low-Temperature Loadings
M. A. Baranov, I. B. Volkova, and V. Ya. Bayankin
pp. 622-626 Full Text: PDF (69 kB)
Time Features of the Dynamic Failure of Metals Attributable to the Hierarchic Properties of Dissipative Structures—Cascade of Failure Centers
R. I. Il'kaev, V. T. Punin, A. Ya. Uchaev, S. A. Novikov, E. V. Kosheleva, L. A. Platonova, N. I. Sel'chenkova, and N. A. Yukina
pp. 627-632 Full Text: PDF (160 kB)
Acoustic Waves in Microinhomogeneous Media with Quadratic Elastic Nonlinearity and Relaxation
V. E. Nazarov and A. V. Radostin
pp. 633-636 Full Text: PDF (54 kB)
TECHNICAL PHYSICS
Pulsed Radiation from a Coaxial Line into an Irregular Waveguide
V. I. Koroza and M. N. Golikov
pp. 637-639 Full Text: PDF (44 kB)
Criterion of the Appearance of Diamond-Shaped Pores in Dispersely Filled Polymers
S. L. Bazhenov, O. A. Serenko, I. L. Dubnikova, and A. A. Berlin
pp. 640-643 Full Text: PDF (245 kB)
MECHANICS
Quasilinear Self-Excited Oscillations of a Helmholtz Resonator
L. D. Akulenko and S. V. Nesterov
pp. 644-648 Full Text: PDF (60 kB)
Various Regimes of Motion of a Spherical Cavity at a Negative External Pressure
M. A. Guzev, K. V. Koshel', and D. V. Stepanov
pp. 649-653 Full Text: PDF (64 kB)
On the Inversion of the Lyapunov Theorem on Asymptotic Stability in the First Approximation
O. V. Druzhinina
pp. 654-656 Full Text: PDF (46 kB)Archived web conten
Code and examples for the paper 'Computation of the analytic center of the solution set of the linear matrix inequality arising in continuous- and discrete-time passivity analysis'
No full text<p>Python library for computing the analytic center of the passivity LMI in the continuous- and discrete-time setting. See the paper 'Bankmann, D.; Mehrmann, V.; Nesterov, Y.; van Dooren, P., 'Computation of the analytic center of the solution set of the linear matrix inequality arising in continuous- and discrete-time passivity analysis, 2019' for more details</p>The first author is supported by the German Research Foundation DFG as part of the project `Distributed Dynamic Security Control in Next-Generation Electrical Power Systems' with the project identification number 361092219 of the priority program `DFG SPP 1984 - Hybrid and multimodal energy systems: System theory methods for the transformation and operation of complex networks'
.
The second author is supported by the German Federal Ministry of Education and Research BMBF within the project EiFer and by Deutsche Forschungsgemeinschaft, through TRR 154 'Mathematical Modelling, Simulation and Optimization using the Example of Gas Networks'.
The third author is supported by ERC Advanced Grant 788368.
The fourth author is supported by Deutsche Forschungsgemeinschaft, through TRR 154 'Mathematical Modelling, Simulation and Optimization using the Example of Gas Networks'
Nonassociative geometry: Towards discrete structure of spacetime
No full textIn the framework of nonassociative geometry a unified description of continuum and discrete spacetime is proposed. In our approach at the Planck scales the spacetime is described as a so-called diodular discrete structure which at large spacetime scales "looks like" a differentiable manifold. After a brief review of foundations of nonassociative geometry, we discuss the nonassociative smooth and discrete de Sitter spacetimes. ©2000 The American Physical Society
JETP Letters V. 73, I. 12
No full textleave(s) : ill; 28 cm.JETP Letters -- June 25, 2001
Volume 73, Issue 12, pp. 637-687
GRAVITY, ASTROPHYSICS
Fermion Zero Modes in Painlev����Gullstrand Black Hole
G. E. Volovik
pp. 637-641 Full Text: PDF (64 kB)
FIELDS, PARTICLES, AND NUCLEI
Photon Damping Caused by Electron���Positron Pair Production in a Strong Magnetic Field
N. V. Mikheev and N. V. Chistyakov
pp. 642-646 Full Text: PDF (67 kB)
ATOMS, SPECTRA, RADIATIONS
Second Optical Harmonic Generation in Nonlinear Crystals with a Disordered Domain Structure
E. Yu. Morozov, A. A. Kaminskii, A. S. Chirkin, and D. B. Yusupov
pp. 647-650 Full Text: PDF (49 kB)
PLASMA, GASES
Generation of High-Energy Secondary Pulsed Molecular Beams
V. M. Apatin, G. N. Makarov, and V. V. Nesterov
pp. 651-654 Full Text: PDF (64 kB)
Influence of Angles of Incidence of Laser Radiation on the Generation of Fast Ions
S. Yu. Gus'kov, N. N. Demchenko, K. N. Makarov, S. G. Nishchuk, T. A. Pikuz, Yu. A. Satov, I. Yu. Skobelev, Yu. B. Smakovskii, A. Ya. Faenov, S. V. Khomenko, and B. Yu. Sharkov
pp. 655-660 Full Text: PDF (95 kB)
CONDENSED MATTER
Remanent States of Small Ferromagnetic Cylinder
V. Ternovsky, B. Luk'yanchuk, and J. P. Wang
pp. 661-665 Full Text: PDF (182 kB)
Electron Gas Compression and Coulomb Explosion in the Surface Layer of a Conductor Heated by Femtosecond Laser Pulse
S. I. Kudryashov and V. I. Emel'yanov
pp. 666-670 Full Text: PDF (79 kB)
Direct Experimental Study of the Equilibrium Diffusion of Carbon Atoms between the (100)Mo Surface and the Bulk
N. R. Gall', E. V. Rut'kov, and A. Ya. Tontegode
pp. 671-673 Full Text: PDF (42 kB)
Magnetic Moment Relaxation of a Shallow Acceptor Center in Heavily Doped Silicon
T. N. Mamedov, D. G. Andrianov, D. Herlach, V. N. Gorelkin, K. I. Gritsai, V. N. Duginov, O. Kormann, J. Major, A. V. Stoikov, and U. Zimmermann
pp. 674-677 Full Text: PDF (58 kB)
MISCELLANEOUS
Apparent Anomalous Behavior of the Power Spectrum of 1 / f Noise and Its Explanation
A. G. Budarin
pp. 678-681 Full Text: PDF (54 kB)
The Role of Causality in Ensuring the Ultimate Security of Relativistic Quantum Cryptography
S. N. Molotkov and S. S. Nazin
pp. 682-687 Full Text: PDF (71 kB)The content contained herein is maintained and curated by the Preservation Department.This record is revised and maintained by the content administrators from the Cataloging & Metadata Department
Doklady Physics V. 50, I. 04
No full textdc.description[en_US]Doklady Physics -- April 2005
Volume 50, Issue 4, pp. 165-226
PHYSICS
Electromagnetically Induced Transparency and Controlling the Time Shape of Laser Pulses
V. G. Arkhipkin and I. V. Timofeev
pp. 165-168 Full Text: PDF (51 kB)
Stochastic Simulation of the Fluctuation Stage in the Formation of Thin Films
A. L. Bondareva and G. I. Zmievskaya
pp. 169-173 Full Text: PDF (308 kB)
Effect of Relaxation-Time Distribution in the Dielectric Spectra of Semielectrics
N. V. Afanas'ev, L. V. Mukhaeva, A. A. Maksimov, T. G. Ermakova, and M. G. Voronkov
pp. 174-177 Full Text: PDF (105 kB)
Calculation of the Electromagnetic Fields of Dipole Sources in Layered Media
S. I. Smagin and V. N. Mazalov
pp. 178-183 Full Text: PDF (95 kB)
MECHANICS
On the Theory of Longitudinal and Transverse Vibrations of Preliminary Stressed Beams and Rods
Yu. A. Dem'yanov
pp. 184-187 Full Text: PDF (48 kB)
On the Effect of a Porous Insert in the Supersonic Section of a Nozzle upon Change in Its Thrust
V. N. Zaikovskii, V. P. Kiselev, S. P. Kiselev, B. M. Melamed, M. I. Sokolovskii, A. I. Todoshchenko, G. V. Trubacheev, and V. M. Fomin
pp. 188-191 Full Text: PDF (58 kB)
Families of Symmetric Periodic Motions of the Euler Problem
V. N. Tkhai
pp. 192-194 Full Text: PDF (48 kB)
Structure of a Diffusion-Induced Flow Near a Sphere in a Continuously Stratified Fluid
V. G. Baydulov, P. V. Matyushin, and Yu. D. Chashechkin
pp. 195-199 Full Text: PDF (3823 kB)
Initial Stage of the Generation of Dam-Break Waves
V. I. Bukreev and A. V. Gusev
pp. 200-203 Full Text: PDF (361 kB)
Acceleration Waves in Micropolar Elastic Media
V. A. Eremeyev
pp. 204-206 Full Text: PDF (47 kB)
Stationary Motion of a Homogeneous Meteor Ring in a Central Gravitational Field
G. V. Kasatkin
pp. 207-210 Full Text: PDF (49 kB)
Dynamic Model of a Porous Medium Saturated with a Viscous Liquid
S. V. Nesterov and L. D. Akulenko
pp. 211-214 Full Text: PDF (50 kB)
Microstructure Sources of Sound Backscattering in a Stratified Flow
V. E. Prokhorov
pp. 215-219 Full Text: PDF (399 kB)
On the Theory of Roll Waves in Inclined Channels
E. A. Demekhin, E. N. Kalaidin, and E. M. Shapar'
pp. 220-222 Full Text: PDF (50 kB)
On Evolutional and Catastrophic Regimes of Meso���Macro Energy Exchange in Dynamically Loaded Media
Yu. I. Mescheryakov
pp. 223-226 Full Text: PDF (54 kB)dc.description.contributor[en_US]dc.description.contributor[en_US
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