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Showing 13 to 24 of 438 entries
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Application and implications of polyethylene glycol-fusion as a novel technology to repair injured spinal cords.

Neural regeneration research

Bittner GD, Rokkappanavar KK, Peduzzi JD.
PMID: 26604897
Neural Regen Res. 2015 Sep;10(9):1406-8. doi: 10.4103/1673-5374.162772.

No abstract available.

Evidence of excited state absorption in PS II membrane fragments.

Photosynthesis research

Bittner T, Voigt J, Kehrberg G, Eckert HJ, Renger G.
PMID: 24414972
Photosynth Res. 1991 Jun;28(3):131-9. doi: 10.1007/BF00054126.

Utilizing a two-beam technique in the frequency domain, the pumped absorption of PS II membrane fragments from spinach and of acetonic chlorophyll-a solutions was measured at room temperature. In a very narrow wavelength region (0.2 nm around the pump...

Highly Unsaturated Platinum and Palladium Carbenes PtC3 and PdC3 Isolated and Characterized in the Gas Phase.

Angewandte Chemie (International ed. in English)

Bittner DM, Zaleski DP, Tew DP, Walker NR, Legon AC.
PMID: 26879473
Angew Chem Int Ed Engl. 2016 Mar 07;55(11):3768-71. doi: 10.1002/anie.201511646. Epub 2016 Feb 16.

Carbenes of platinum and palladium, PtC3 and PdC3 , were generated in the gas phase through laser vaporization of a metal target in the presence of a low concentration of a hydrocarbon precursor undergoing supersonic expansion. Rotational spectroscopy and...

Lightdrum-Portable Light Stage for Accurate BTF Measurement on Site.

Sensors (Basel, Switzerland)

Havran V, Hošek J, Němcová Š, Čáp J, Bittner J.
PMID: 28241466
Sensors (Basel). 2017 Feb 23;17(3). doi: 10.3390/s17030423.

We propose a miniaturised light stage for measuring the bidirectional reflectance distribution function (BRDF) and the bidirectional texture function (BTF) of surfaces on site in real world application scenarios. The main principle of our lightweight BTF acquisition gantry is...

Ultrafast decoherence dynamics govern photocarrier generation efficiencies in polymer solar cells.

Scientific reports

Vella E, Li H, Grégoire P, Tuladhar SM, Vezie MS, Few S, Bazán CM, Nelson J, Silva-Acuña C, Bittner ER.
PMID: 27412119
Sci Rep. 2016 Jul 14;6:29437. doi: 10.1038/srep29437.

All-organic-based photovoltaic solar cells have attracted considerable attention because of their low-cost processing and short energy payback time. In such systems the primary dissociation of an optical excitation into a pair of photocarriers has been recently shown to be...

Computing intramolecular charge and energy transfer rates using optimal modes.

The Journal of chemical physics

Yang X, Bittner ER.
PMID: 26133417
J Chem Phys. 2015 Jun 28;142(24):244114. doi: 10.1063/1.4923191.

In our recent work [X. Yang and E. R. Bittner, J. Phys. Chem. A 118, 5196 (2014)], we showed how to construct a reduced set of nuclear motions that capture the coupling between electronic and nuclear degrees of freedom...

Synthesis of enantiopure homoallylic ethers by reagent controlled facial selective allylation of chiral ketones.

Chemistry (Weinheim an der Bergstrasse, Germany)

Tietze LF, Weigand B, Völkel L, Wulff C, Bittner C.
PMID: 11205007
Chemistry. 2001 Jan 05;7(1):161-8. doi: 10.1002/1521-3765(20010105)7:1<161::aid-chem161>3.0.co;2-9.

The stereoselective allylation of chiral methyl ketones to give tertiary homoallylic ethers, which can easily be transformed into homoallylic alcohols, is described. Reaction of the enantiopure ketones 8a-d and the racemic ketones 26a-d with the norpseudoephedrine derivative 2 or...

Phase transition in complex /psi/(4) theory.

Physical review letters

Bittner E, Janke W.
PMID: 12225010
Phys Rev Lett. 2002 Sep 23;89(13):130201. doi: 10.1103/PhysRevLett.89.130201. Epub 2002 Sep 09.

Motivated by recent claims for rather unconventional first-order phase transitions in the two- and three-dimensional complex /psi/(4) theory in certain parameter ranges we performed Monte Carlo simulation studies of this model. From our results in two and three dimensions...

Exciton dissociation dynamics in model donor-acceptor polymer heterojunctions. I. Energetics and spectra.

The Journal of chemical physics

Bittner ER, Ramon JG, Karabunarliev S.
PMID: 15974774
J Chem Phys. 2005 Jun 01;122(21):214719. doi: 10.1063/1.1924540.

In this paper we consider the essential electronic excited states in parallel chains of semiconducting polymers that are currently being explored for photovoltaic and light-emitting diode applications. In particular, we focus upon various type II donor-acceptor heterojunctions and explore...

Nonadiabatic quantum dynamics based on a hierarchical electron-phonon model: exciton dissociation in semiconducting polymers.

The Journal of chemical physics

Tamura H, Bittner ER, Burghardt I.
PMID: 17655454
J Chem Phys. 2007 Jul 21;127(3):034706. doi: 10.1063/1.2748050.

A hierarchical electron-phonon coupling model is applied to describe the ultrafast decay of a photogenerated exciton at a donor-acceptor polymer heterojunction, via a vibronic coupling mechanism by which a charge-localized interfacial state is created. Expanding upon an earlier Communication...

THE ROUTINE EXAMINATION IN A GENERAL HOSPITAL FOR DIPHTHERIA CARRIERS AND A NOTE ON THE SCHICK REACTION.

California state journal of medicine

Cummins WT, Brown PK, Bittner CL.
PMID: 18736718
Cal State J Med. 1915 Sep;13(9):360-1.

No abstract available.

Time-convolutionless master equation for mesoscopic electron-phonon systems.

The Journal of chemical physics

Pereverzev A, Bittner ER.
PMID: 16999549
J Chem Phys. 2006 Sep 14;125(10):104906. doi: 10.1063/1.2348869.

The time-convolutionless master equation for the electronic populations is derived for a generic electron-phonon Hamiltonian. The equation can be used in the regimes where the golden rule approach is not applicable. The equation is applied to study the electronic...

Showing 13 to 24 of 438 entries