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Showing 1 to 12 of 70 entries
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500 kHz OPCPA delivering tunable sub-20 fs pulses with 15 W average power based on an all-ytterbium laser.

Optics express

Puppin M, Deng Y, Prochnow O, Ahrens J, Binhammer T, Morgner U, Krenz M, Wolf M, Ernstorfer R.
PMID: 25835905
Opt Express. 2015 Jan 26;23(2):1491-7. doi: 10.1364/OE.23.001491.

An optical parametric chirped pulse amplifier fully based on Yb lasers at 500 kHz is described. Passive optical-synchronization is achieved between a fiber laser-pumped white-light and a 515 nm pump produced with a 200 W picosecond Yb:YAG InnoSlab amplifier....

Parallel Calculation of CCSDT and Mk-MRCCSDT Energies.

Journal of chemical theory and computation

Prochnow E, Harding ME, Gauss J.
PMID: 26613490
J Chem Theory Comput. 2010 Aug 10;6(8):2339-47. doi: 10.1021/ct1002016.

A scheme for the parallel calculation of energies at the coupled-cluster singles, doubles, and triples (CCSDT) level of theory, several approximate iterative CCSDT schemes (CCSDT-1a, CCSDT-1b, CCSDT-2, CCSDT-3, and CC3), and for the state-specific multireference coupled-cluster ansatz suggested by...

Anterior and posterior subareas of the dorsolateral frontal cortex in socially relevant decisions based on masked affect expressions.

F1000Research

Prochnow D, Brunheim S, Kossack H, Eickhoff SB, Markowitsch HJ, Seitz RJ.
PMID: 26236464
F1000Res. 2014 Sep 05;3:212. doi: 10.12688/f1000research.4734.3. eCollection 2014.

Socially-relevant decisions are based on clearly recognizable but also not consciously accessible affective stimuli. We studied the role of the dorsolateral frontal cortex (DLFC) in decision-making on masked affect expressions using functional magnetic resonance imaging. Our paradigm permitted us...

All-fiber ytterbium femtosecond laser without dispersion compensation.

Optics express

Schultz M, Karow H, Prochnow O, Wandt D, Morgner U, Kracht D.
PMID: 19030043
Opt Express. 2008 Nov 24;16(24):19562-7. doi: 10.1364/oe.16.019562.

We report on an all-fiber femtosecond ytterbium laser without dispersion compensation consisting of all-normal dispersion fibers. Mode-locking was achieved by nonlinear polarization evolution in combination with additional amplitude modulation generated by a fiber-based spectral filter. The generated pulses were...

[Health care reform 2004. Consequences for the contract physician].

Aktuelle Urologie

Prochnow T.
PMID: 14716576
Aktuelle Urol. 2003 Dec;34(7):439. doi: 10.1055/s-2003-814727.

No abstract available.

Solid-state NMR studies of 17O-enriched pyrophosphates.

Solid state nuclear magnetic resonance

Prochnow D, Grimmer AR, Freude D.
PMID: 16621468
Solid State Nucl Magn Reson. 2006 Sep;30(2):69-74. doi: 10.1016/j.ssnmr.2006.02.004. Epub 2006 Apr 18.

For the first time, 17O NMR studies were performed on 17O-enriched crystalline pyrophosphates (magnesium-, sodium- and barium-pyrophosphate) by means of triple-quantum magic-angle spinning (3QMAS) and double-rotation (DOR) in the high external field of 17.6 T. Oxygen atoms in bridging...

Quantum-limited noise performance of a femtosecond all-fiber ytterbium laser.

Optics express

Prochnow O, Paschotta R, Benkler E, Morgner U, Neumann J, Wandt D, Kracht D.
PMID: 19724550
Opt Express. 2009 Aug 31;17(18):15525-33. doi: 10.1364/OE.17.015525.

We report on quantum-limited noise performance of a mode-locked ytterbium all-fiber laser. The laser operates at a high normal net dispersion without dispersion compensation. We show that the naïve application of analytical models to such lasers leads to strongly...

Titanium-catalyzed hydroaminoalkylation of alkenes by C-H bond activation at sp3 centers in the alpha-position to a nitrogen atom.

Angewandte Chemie (International ed. in English)

Kubiak R, Prochnow I, Doye S.
PMID: 19116994
Angew Chem Int Ed Engl. 2009;48(6):1153-6. doi: 10.1002/anie.200805169.

No abstract available.

Preparing precision ultrafine sapphire surfaces: a practical method.

Applied optics

Prochnow E, Edwards DF.
PMID: 20453980
Appl Opt. 1986 Aug 15;25(16):2639-40. doi: 10.1364/AO.25.002639.

No abstract available.

Noninvasive assessment and quantification of tumour vascularisation using MRI and CT in a tumour model with modifiable angiogenesis - An animal experimental prospective cohort study.

European radiology experimental

Mirus M, Tokalov SV, Wolf G, Heinold J, Prochnow V, Abolmaali N.
PMID: 29708186
Eur Radiol Exp. 2017;1(1):15. doi: 10.1186/s41747-017-0014-5. Epub 2017 Oct 16.

BACKGROUND: To investigate vascular-related pathophysiological characteristics of two human lung cancers with modifiable vascularisation using MRI and CT.METHODS: Tumour xenografts with modifiable vascularisation were established in 71 rats (approval by the Animal Care Committee was obtained) by subcutaneous transplantation...

Perforator Dissection Simulation: A High-Fidelity Five-Flap Porcine Training Model.

Journal of maxillofacial and oral surgery

Oezdogan Y, Loh CYY, Prochnow N, Lehnhardt M.
PMID: 31988580
J Maxillofac Oral Surg. 2020 Mar;19(1):151-156. doi: 10.1007/s12663-019-01220-1. Epub 2019 Mar 30.

INTRODUCTION: Perforator dissection can be technically demanding with a steep learning curve. Inadvertent perforator damage during dissection can be minimized with practice and familiarity with tissue-handling techniques unique to perforator dissection. There currently lacks a simulation model that mimics...

Sport Participation Associations With Child Friend Selection and Physical Activity While at Summer Care Programs.

Research quarterly for exercise and sport

Prochnow TM, Patterson MS, Meyer AR, Umstattd Meyer MR.
PMID: 34252350
Res Q Exerc Sport. 2021 Jul 12;1-9. doi: 10.1080/02701367.2020.1864261. Epub 2021 Jul 12.

Child physical activity (PA) declines during summer reducing PA-related health benefits. Summer care programs (e.g., Boys & Girls Clubs) can promote active play while providing opportunities for friendships. Sport participation is a positive influence on PA and social development.

Showing 1 to 12 of 70 entries