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[Congresses of pediatricians in the USSR and their role in development of Soviet pediatrics].

Pediatriia

Lebedev DD, Semenova EI.
PMID: 927992
Pediatriia. 1977 Oct;(10):52-8.

No abstract available.

No Significant Effect of Prefrontal tDCS on Working Memory Performance in Older Adults.

Frontiers in aging neuroscience

Nilsson J, Lebedev AV, Lövdén M.
PMID: 26696882
Front Aging Neurosci. 2015 Dec 14;7:230. doi: 10.3389/fnagi.2015.00230. eCollection 2015.

Transcranial direct current stimulation (tDCS) has been put forward as a non-pharmacological alternative for alleviating cognitive decline in old age. Although results have shown some promise, little is known about the optimal stimulation parameters for modulation in the cognitive...

Switchable Synthesis of 4,5-Functionalized 1,2,3-Thiadiazoles and 1,2,3-Triazoles from 2-Cyanothioacetamides under Diazo Group Transfer Conditions.

The Journal of organic chemistry

Filimonov VO, Dianova LN, Galata KA, Beryozkina TV, Novikov MS, Berseneva VS, Eltsov OS, Lebedev AT, Slepukhin PA, Bakulev VA.
PMID: 28328204
J Org Chem. 2017 Apr 21;82(8):4056-4071. doi: 10.1021/acs.joc.6b02736. Epub 2017 Apr 03.

High yield solvent-base-controlled, transition metal-free synthesis of 4,5-functionalized 1,2,3-thiadiazoles and 1,2,3-triazoles from 2-cyanothioacetamides and sulfonyl azides is described. Under diazo transfer conditions in the presence of a base in an aprotic solvent 2-cyanothioacetamides operating as C-C-S building blocks produce...

Two different modes of nested wire array Z-pinch implosions.

Physical review letters

Lebedev SV, Aliaga-Rossel R, Bland SN, Chittenden JP, Dangor AE, Haines MG, Zakaullah M.
PMID: 11017606
Phys Rev Lett. 2000 Feb 21;84(8):1708-11. doi: 10.1103/PhysRevLett.84.1708.

Two different modes of nested wire array implosion driven by a 1-MA, 240-ns current pulse were observed, determined by the fraction of total current induced in the inner array. Penetration by the outer array through the inner with switching...

Cyclization of ortho-cyclopropylphenyl benzamides in gas and liquid phases.

Journal of the American Society for Mass Spectrometry

Lebedev AT, Dianova IV, Mochalov SS, Lobodin VV, Samguina TY, Gazzaeva RA.
PMID: 11506228
J Am Soc Mass Spectrom. 2001 Aug;12(8):956-63. doi: 10.1016/s1044-0305(01)00277-x.

The electron ionization (EI) and collision-induced dissociation (CID) spectra of substituted N-(ortho-cyclopropylphenyl)benzamides 1-7 and N-[ortho-(1-methylcyclopropyl)phenyl]benzamides 8-12 were recorded. In addition to routine bond cleavages, the molecular ions (M+) of 1-12 undergo cyclization into the corresponding 3-aryl-1-alkyl-1-ethyl-1H-benzoxazines and isomeric 5-ethyl-2-oxodibenzoazepines....

Seismic evidence for olivine phase changes at the 410- and 660-kilometer discontinuities.

Science (New York, N.Y.)

Lebedev S, Chevrot S, van der Hilst RD.
PMID: 12016311
Science. 2002 May 17;296(5571):1300-2. doi: 10.1126/science.1069407.

The view that the seismic discontinuities bounding the mantle transition zone at 410- and 660-kilometer depths are caused by isochemical phase transformations of the olivine structure is debated. Combining converted-wave measurements in East Asia and Australia with seismic velocities...

Dynamics of cylindrically converging precursor plasma flow in wire-array Z -pinch experiments.

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

Bott SC, Lebedev SV, Ampleford DJ, Bland SN, Chittenden JP, Ciardi A, Haines MG, Jennings C, Sherlock M, Hall G, Rapley J, Beg FN, Palmer J.
PMID: 17155178
Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Oct;74(4):046403. doi: 10.1103/PhysRevE.74.046403. Epub 2006 Oct 12.

This paper summarizes the present understanding of the processes leading to precursor column formation in cylindrical wire arrays on the 1 MA MAGPIE generator at Imperial College London. Direct experimental measurements of the diameter variation during the collapse and...

Synthesis of 1-aryl-1H-indazoles via palladium-catalyzed intramolecular amination of aryl halides.

The Journal of organic chemistry

Lebedev AY, Khartulyari AS, Voskoboynikov AZ.
PMID: 15651807
J Org Chem. 2005 Jan 21;70(2):596-602. doi: 10.1021/jo048671t.

Palladium-catalyzed cyclization of arylhydrazones of 2-bromoaldehydes and 2-bromoacetophenones to give 1-aryl-1H-indazoles has been studied in detail. The cyclization of arylhydrazone of 2-bromobenzaldehydes can be performed with good to high yields using Pd(dba)2 and chelating phosphines, of which the most...

Modifying wire-array Z-pinch ablation structure using coiled arrays.

Physical review letters

Hall GN, Chittenden JP, Bland SN, Lebedev SV, Bott SC, Jennings C, Palmer JB, Suzuki-Vidal F.
PMID: 18352483
Phys Rev Lett. 2008 Feb 15;100(6):065003. doi: 10.1103/PhysRevLett.100.065003. Epub 2008 Feb 14.

A new wire-array configuration has been used to control the modulation of ablated plasma flow for the first time. Cylindrical aluminum coiled arrays, in which each straight wire is replaced with a single helix, were driven by a 1...

Direct experimental evidence for current-transfer mode operation of nested tungsten wire arrays at 16-19 MA.

Physical review letters

Cuneo ME, Sinars DB, Bliss DE, Waisman EM, Porter JL, Stygar WA, Lebedev SV, Chittenden JP, Sarkisov GS, Afeyan BB.
PMID: 16090406
Phys Rev Lett. 2005 Jun 10;94(22):225003. doi: 10.1103/PhysRevLett.94.225003. Epub 2005 Jun 08.

Nested tungsten wire arrays (20-mm on 12-mm diam.) are shown for the first time to operate in a current-transfer mode at 16-19 MA, even for azimuthal interwire gaps of 0.2 mm that are the smallest typically used for any...

The convergence of sympathetic preganglionic fibres on vasomotor neurones of the ganglia in lumbar sympathetic chain.

Neuroscience letters

Lebedev VP, Syromiatnikov AV, Skok VI.
PMID: 19604952
Neurosci Lett. 1977 Apr;4(5):243-7. doi: 10.1016/0304-3940(77)90186-0.

By means of intracellular recordings from the neurones of isolated L(3)-L(6) ganglia it was shown that B(1)-, B(2)- and C-preganglionic fibres widely converge on these neurones. Besides, a part of the ganglionic neurones is activated by slow-conducting C-fibres coming...

Study of the early somatosympathetic reflex response.

Neuroscience letters

Lebedev VP, Rosanov NN, Skobelev VA, Smirnov KA.
PMID: 19604852
Neurosci Lett. 1976 Aug;2(6):319-23. doi: 10.1016/0304-3940(76)90167-1.

Using anesthetized cats, we studied the early components of the somatosympathetic reflex in the white rami communicantes of segments T(3) and L(2) in response to stimulation of the corresponding segmental somatic nerves. The results show that the early somatosympathetic...

Showing 1 to 12 of 126 entries