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Showing 1 to 12 of 136 entries
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[Evaluation of corneal biomechanics before and after up-to-date keratoplasty in patients with bullous keratopathy].

Vestnik oftalmologii

Trufanov SV, Antonov AA, Malozhen SA, Siplivyy VI.
PMID: 26977723
Vestn Oftalmol. 2015 Nov-Dec;131(6):20-25. doi: 10.17116/oftalma2015131620-25.

UNLABELLED: Aim - to study biomechanical properties of the cornea in patients with bullous keratopathy before and after keratoplasty.MATERIAL AND METHODS: Ocular response analyzer (ORA, Reichert) indices were studied in 37 patients (37 eyes) with bullous keratopathy before and...

Electric-field-induced shape transition of nematic tactoids.

Physical review. E

Metselaar L, Dozov I, Antonova K, Belamie E, Davidson P, Yeomans JM, Doostmohammadi A.
PMID: 28950460
Phys Rev E. 2017 Aug;96(2):022706. doi: 10.1103/PhysRevE.96.022706. Epub 2017 Aug 09.

The occurrence of new textures of liquid crystals is an important factor in tuning their optical and photonics properties. Here, we show, both experimentally and by numerical computation, that under an electric field chitin tactoids (i.e., nematic droplets) can...

Ring lithiation of 1,8-bis(dimethylamino)naphthalene: another side of the 'proton sponge coin'.

Dalton transactions (Cambridge, England : 2003)

Antonov AS, Pozharskii AF, Ozeryanskii VA, Filarowski A, Suponitsky KY, Tolstoy PM, Vovk MA.
PMID: 26399216
Dalton Trans. 2015 Oct 28;44(40):17756-66. doi: 10.1039/c5dt02482j. Epub 2015 Sep 23.

It has been found that 1,8-bis(dimethylamino)naphthalene (DMAN), unlike N,N-dimethylaniline, undergoes ring metallation in the n-BuLi-TMEDA-Et2O system with a low selectivity and in poor total yields. The situation is significantly improved in the t-BuLi-TMEDA-n-hexane system when 3- and 4-lithium derivatives...

Regional differences in use of endoscopic ultrasonography in Ontario: a population-based retrospective cohort study.

CMAJ open

James PD, Hegagi M, Antonova L, Tinmouth J, Heitman SJ, Simone C, Yeung E, Yong E.
PMID: 28600449
CMAJ Open. 2017 Jun 07;5(2):E437-E443. doi: 10.9778/cmajo.20160153.

BACKGROUND: Endoscopic ultrasonography is a safe and accurate modality for evaluating and managing hepatobiliary and gastrointestinal conditions (malignant and nonmalignant); its use is increasing. The aim of this study was to describe regional trends in the use of endoscopic...

Utility of touch preparation for rapid diagnosis of cutaneous mucormycosis.

JAAD case reports

Antonov NK, Tang R, Grossman ME.
PMID: 27051722
JAAD Case Rep. 2015 Jun 08;1(4):175-7. doi: 10.1016/j.jdcr.2015.04.006. eCollection 2015 Jul.

No abstract available.

Binding-catalysis relationship in alpha-chymotrypsin action as revealed from reversible inhibition study of phenylalkylboronic acids.

FEBS letters

Antonov VK, Ivanina TV, Ivanova AG, Berezin IV, Levashov AV, Martinek K.
PMID: 11946376
FEBS Lett. 1972 Jan 15;20(1):37-40. doi: 10.1016/0014-5793(72)80011-5.

No abstract available.

Zenithal gliding of the easy axis of a nematic liquid crystal.

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

Joly S, Antonova K, Martinot-Lagarde P, Dozov I.
PMID: 15600580
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Nov;70(5):050701. doi: 10.1103/PhysRevE.70.050701. Epub 2004 Nov 19.

We present experimental evidence of zenithal gliding of the nematic easy axis on a polyimide surface. The reorientation dynamics of the easy axis under external torque, and its relaxation, are extremely slow processes which cannot be described by a...

Production of podophyllotoxin in Linum linearifolium in vitro cultures.

Pharmacognosy magazine

Ionkova I, Antonova I, Momekov G, Fuss E.
PMID: 20931076
Pharmacogn Mag. 2010 Jul;6(23):180-5. doi: 10.4103/0973-1296.66932.

For the first time, callus and suspension cultures of Linum linearifolium were initiated. Podophyllotoxin (PTOX), a strong antitumor precursor, was isolated from the calli and suspension, as a main lignan besides smaller amount of 6-methoxypodophyllotoxin (6MPTOX). L. linearifolium is...

Out-basicity of 1,8-bis(dimethylamino)naphthalene: the experimental and theoretical challenge.

Organic & biomolecular chemistry

Ozeryanskii VA, Pozharskii AF, Antonov AS, Filarowski A.
PMID: 24522408
Org Biomol Chem. 2014 Apr 21;12(15):2360-9. doi: 10.1039/c3ob41986j.

A possibility of non-conventional two-step protonation of 1,8-bis(dimethylamino)naphthalene (proton sponge) is discussed. Unlike the generally accepted mechanism, involving relatively slow direct penetration of a proton into the cleft between the peri-NMe2 groups, it consists of the rapid addition of...

Stimulated emission in the 2.8-3.5 μm wavelength range from Peltier cooled HgTe/CdHgTe quantum well heterostructures.

Optics express

Fadeev MA, Rumyantsev VV, Kadykov AM, Dubinov AA, Antonov AV, Kudryavtsev KE, Dvoretskii SA, Mikhailov NN, Gavrilenko VI, Morozov SV.
PMID: 29801310
Opt Express. 2018 May 14;26(10):12755-12760. doi: 10.1364/OE.26.012755.

We report stimulated emission in the 2.8-3.5 μm wavelength range from HgTe/CdHgTe quantum well (QW) heterostructures at temperatures available with thermoelectric cooling. The structures were designed to suppress the Auger recombination by implementing narrow (1.5 - 2 nm wide)...

Proton-induced fluorescence in modified quino[7,8-h]quinolines: dual sensing for protons and π-donors.

Organic & biomolecular chemistry

Pozharskii AF, Ozeryanskii VA, Mikshiev VY, Chernyshev AV, Metelitsa AV, Antonov AS.
PMID: 31436774
Org Biomol Chem. 2019 Sep 21;17(35):8221-8233. doi: 10.1039/c9ob01391a. Epub 2019 Aug 22.

The synthesis, as well as spectral, structural and photoluminescence properties of dipyrido[3,2-e:2',3'-h]acenaphthene 5 and quinazolino[7,8-h]quinazolines 6 as representatives of the bidentate -N[double bond, length as m-dash]/-N[double bond, length as m-dash] superbases, are reported. These nitrogen bases being more rigid...

Detecting .

Balkan journal of medical genetics : BJMG

Hammoudeh ZA, Antonova O, Staneva R, Nikolova D, Kyuchukov Y, Penev A, Mintchev T, Koleva V, Hadjidekova S, Toncheva D.
PMID: 30425905
Balkan J Med Genet. 2018 Oct 29;21(1):13-17. doi: 10.2478/bjmg-2018-0013. eCollection 2018 Jun.

Mutations in the receptor of the epidermal growth factor receptor (

Showing 1 to 12 of 136 entries