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Showing 1 to 12 of 122 entries
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Linear-selective hydroarylation of unactivated terminal and internal olefins with trifluoromethyl-substituted arenes.

Journal of the American Chemical Society

Bair JS, Schramm Y, Sergeev AG, Clot E, Eisenstein O, Hartwig JF.
PMID: 25171744
J Am Chem Soc. 2014 Sep 24;136(38):13098-101. doi: 10.1021/ja505579f. Epub 2014 Sep 15.

We report a series of hydroarylations of unactivated olefins with trifluoromethyl-substituted arenes that occur with high selectivity for the linear product without directing groups on the arene. We also show that hydroarylations occur with internal, acyclic olefins to yield...

Visualizing Pure Quantum Turbulence in Superfluid 3He: Andreev Reflection and its Spectral Properties.

Physical review letters

Baggaley AW, Tsepelin V, Barenghi CF, Fisher SN, Pickett GR, Sergeev YA, Suramlishvili N.
PMID: 26182103
Phys Rev Lett. 2015 Jul 03;115(1):015302. doi: 10.1103/PhysRevLett.115.015302. Epub 2015 Jul 02.

Superfluid 3He-B in the zero-temperature limit offers a unique means of studying quantum turbulence by the Andreev reflection of quasiparticle excitations by the vortex flow fields. We validate the experimental visualization of turbulence in 3He-B by showing the relation...

Impact of quantum effects on relativistic electron motion in a chaotic regime.

Physical review. E, Statistical, nonlinear, and soft matter physics

Bashinov AV, Kim AV, Sergeev AM.
PMID: 26565354
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Oct;92(4):043105. doi: 10.1103/PhysRevE.92.043105. Epub 2015 Oct 19.

The impact of quantum effects on electron dynamics in a plane linearly polarized standing wave with relativistic amplitudes is considered. Using spectral analysis of Lyapunov characteristic exponents with and without radiation losses we show that the contraction effect of...

Draft Genome Sequences of Marinobacter similis A3d10T and Marinobacter salarius R9SW1T.

Genome announcements

Ivanova EP, Ng HJ, Webb HK, Feng G, Oshima K, Hattori M, Ohkuma M, Sergeev AF, Mikhailov VV, Crawford RJ, Sawabe T.
PMID: 24855296
Genome Announc. 2014 May 22;2(3). doi: 10.1128/genomeA.00442-14.

Here, we present the draft genomes of Marinobacter similis A3d10(T), a potential plastic biodegrader, and Marinobacter salarius R9SW1(T), isolated from radioactive waters. This genomic information will contribute information on the genetic basis of the metabolic pathways for the degradation...

Europium(III) tris-dibenzoylmethanate as an efficient chemosensor for detection of ammonia.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Mirochnik AG, Petrochenkova NV, Shishov AS, Bukvetskii BV, Emelina TB, Sergeev AA, Voznesenskii SS.
PMID: 26600058
Spectrochim Acta A Mol Biomol Spectrosc. 2016 Feb 15;155:111-5. doi: 10.1016/j.saa.2015.11.004. Epub 2015 Nov 04.

The effect of ammonia vapor on luminescence of Eu(III) tris-dibenzoylmethanate immobilized in various matrices has been investigated. It has been revealed that interaction of Eu(III) tris-dibenzoylmethanate with analyte vapor results in increase of the intensity of Eu(III) luminescence. The...

Theory and design of a free-electron maser with two-dimensional feedback driven by a sheet electron beam.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Ginzburg NS, Peskov NY, Sergeev AS, Phelps AD, Konoplev IV, Robb GR, Cross AW, Arzhannikov AV, Sinitsky SL.
PMID: 11969839
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Jul;60(1):935-45. doi: 10.1103/physreve.60.935.

The use of two-dimensional Bragg resonators of planar geometry, realizing two-dimensional (2D) distributed feedback, is considered as a method of producing spatially coherent radiation from a large sheet electron beam. The spectrum of eigenmodes is found for a 2D...

Competition between Langmuir and upper-hybrid turbulence in a high-frequency-pumped ionosphere.

Physical review letters

Thidé B, Sergeev EN, Grach SM, Leyser TB, Carozzi TD.
PMID: 16384464
Phys Rev Lett. 2005 Dec 16;95(25):255002. doi: 10.1103/PhysRevLett.95.255002. Epub 2005 Dec 15.

We show how the secondary escaping radiation, also known as stimulated electromagnetic emission (SEE), from the ionosphere irradiated by a high-intensity radio beam, can be used to study both reflection altitude ponderomotive parametric instabilities and upper-hybrid altitude thermal parametric...

Experimental and theoretical studies of a coaxial free-electron maser based on two-dimensional distributed feedback.

Physical review. E, Statistical, nonlinear, and soft matter physics

Konoplev IV, Cross AW, Phelps AD, He W, Ronald K, Whyte CG, Robertson CW, MacInnes P, Ginzburg NS, Peskov NY, Sergeev AS, Zaslavsky VY, Thumm M.
PMID: 18233775
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Nov;76(5):056406. doi: 10.1103/PhysRevE.76.056406. Epub 2007 Nov 30.

The first operation of a coaxial free-electron maser (FEM) based on two-dimensional (2D) distributed feedback has been recently observed. Analytical and numerical modeling, as well as measurements, of microwave radiation generated by a FEM with a cavity defined by...

Palladium-catalyzed formylation of aryl bromides: elucidation of the catalytic cycle of an industrially applied coupling reaction.

Journal of the American Chemical Society

Sergeev AG, Spannenberg A, Beller M.
PMID: 18956867
J Am Chem Soc. 2008 Nov 19;130(46):15549-63. doi: 10.1021/ja804997z. Epub 2008 Oct 29.

The first comprehensive study of the catalytic cycle of the palladium-catalyzed formylation of aryl bromides with synthesis gas (CO/H2, 1:1) is presented. The formylation in the presence of efficient (Pd/PR2(n)Bu, R = 1-Ad, (t)Bu) and nonefficient (Pd/P(t)Bu3) catalysts was...

Exposure to Persistent Organic Pollutants Increases Hospitalization Rates for Myocardial Infarction with Comorbid Hypertension.

Primary prevention insights

Sergeev AV, Carpenter DO.
PMID: 21562627
Prim Prev Insights. 2010 Mar 23;2:1-9. doi: 10.4137/PPRI.S4332.

Studies suggest that environmental exposure to persistent organic pollutants (POPs) may be an emerging risk factor for ischemic heart disease, including acute myocardial infarction (AMI). However, some studies indicate that exposure to POPs may also be a risk factor...

Multicascade proton acceleration by a superintense laser pulse in the regime of relativistically induced slab transparency.

Physical review letters

Gonoskov AA, Korzhimanov AV, Eremin VI, Kim AV, Sergeev AM.
PMID: 19518877
Phys Rev Lett. 2009 May 08;102(18):184801. doi: 10.1103/PhysRevLett.102.184801. Epub 2009 May 07.

The regime of multicascade proton acceleration during the interaction of a 10(21)-10(22) W/cm2 laser pulse with a structured target is proposed. The regime is based on the electron charge displacement under the action of laser ponderomotive force and on...

Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in 3He-B.

Proceedings of the National Academy of Sciences of the United States of America

Fisher SN, Jackson MJ, Sergeev YA, Tsepelin V.
PMID: 24704872
Proc Natl Acad Sci U S A. 2014 Mar 25;111:4659-66. doi: 10.1073/pnas.1312543110. Epub 2014 Mar 24.

Andreev reflection of quasiparticle excitations provides a sensitive and passive probe of flow in superfluid (3)He-B. It is particularly useful for studying complex flows generated by vortex rings and vortex tangles (quantum turbulence). We describe the reflection process and...

Showing 1 to 12 of 122 entries