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Spatial and ecological population genetic structures within two island-endemic Aeonium species of different niche width.

Ecology and evolution

Harter DE, Thiv M, Weig A, Jentsch A, Beierkuhnlein C.
PMID: 26664682
Ecol Evol. 2015 Sep 14;5(19):4327-44. doi: 10.1002/ece3.1682. eCollection 2015 Oct.

The Crassulacean genus Aeonium is a well-known example for plant species radiation on oceanic archipelagos. However, while allopatric speciation among islands is documented for this genus, the role of intra-island speciation due to population divergence by topographical isolation or...

Precipitation of a dioxouranium(VI) species from a room temperature ionic liquid medium.

Inorganic chemistry

Bradley AE, Hatter JE, Nieuwenhuyzen M, Pitner WR, Seddon KR, Thied RC.
PMID: 11925156
Inorg Chem. 2002 Apr 08;41(7):1692-4. doi: 10.1021/ic015619w.

The novel complex 1-butyl-3-methylimidazolium mu(4)-(O,O,O',O'-ethane-1,2-dioato)-bis[bis(nitrato-O,O)dioxouranate(VI)] (1) has been precipitated from a room-temperature ionic liquid medium containing 1-butyl-3-methylimidazolium nitrate, nitric acid, and acetone. X-ray analysis of complex 1 shows the unit cell contains four [C(4)mim](+) cations and two independent [[UO(2))(NO(3))(2)](2)(mu(4)-C(2)O(4))](2-)...

Dynamical aspects of behavior generation under constraints.

Cognitive neurodynamics

Kozma R, Harter D, Achunala S.
PMID: 19003514
Cogn Neurodyn. 2007 Sep;1(3):213-23. doi: 10.1007/s11571-007-9016-y. Epub 2007 Mar 03.

Dynamic adaptation is a key feature of brains helping to maintain the quality of their performance in the face of increasingly difficult constraints. How to achieve high-quality performance under demanding real-time conditions is an important question in the study...

Usefulness of gene pg10 as a source of stem rust resistance in oat breeding.

Phytopathology

Harder DE.
PMID: 18944647
Phytopathology. 1999 Dec;89(12):1214-7. doi: 10.1094/PHYTO.1999.89.12.1214.

ABSTRACT Infection types produced by Puccinia graminis f. sp. avenae on plants of Avena sativa with the stem rust resistance gene Pg10 are characterized by moderate-sized uredinia surrounded by an area of chlorosis and a larger variable zone of...

Atmospheric Trends and Lifetime of CH3CCI3 and Global OH Concentrations.

Science (New York, N.Y.)

Prinn RG, Weiss RF, Miller BR, Huang J, Alyea FN, Cunnold DM, Fraser PJ, Hartley DE, Simmonds PG.
PMID: 17789846
Science. 1995 Jul 14;269(5221):187-92. doi: 10.1126/science.269.5221.187.

Determination of the atmospheric concentrations and lifetime of trichloroethane (CH(3)CCI(3)) is very important in the context of global change. This halocarbon is involved in depletion of ozone, and the hydroxyl radical (OH) concentrations determined from its lifetime provide estimates...

Generation of high-energy femtosecond pulses in multimode-core Yb-fiber chirped-pulse amplification systems.

Optics letters

Galvanauskas A, Cho GC, Hariharan A, Fermann ME, Harter D.
PMID: 18040497
Opt Lett. 2001 Jun 15;26(12):935-7. doi: 10.1364/ol.26.000935.

220-fs pulses with energies of ~100microJ have been generated by use of two different configurations of diode-pumped Yb-fiber chirped-pulse amplification systems. Energy scaling was demonstrated with 25-microm -core diameter fibers, in which stable diffraction-limited output (M(2)~1.1) was achieved. A...

Engineerable femtosecond pulse shaping by second-harmonic generation with Fourier synthetic quasi-phase-matching gratings.

Optics letters

Imeshev G, Galvanauskas A, Harter D, Arbore MA, Proctor M, Fejer MM.
PMID: 18087367
Opt Lett. 1998 Jun 01;23(11):864-6. doi: 10.1364/ol.23.000864.

We describe a pulse-shaping technique that uses second-harmonic generation with Fourier synthetic quasi-phase-matching gratings. We demonstrate both amplitude and phase tailoring by generating a picosecond squarelike pulse as well as trains of femtosecond pulses with a terahertz-range repetition rate...

[How should age be documented?].

Nederlands tijdschrift voor geneeskunde

Harder DE.
PMID: 15782695
Ned Tijdschr Geneeskd. 2005 Mar 05;149(10):554; author reply 554.

No abstract available.

Frequency doubling of femtosecond erbium-fiber soliton lasers in periodically poled lithium niobate.

Optics letters

Arbore MA, Fejer MM, Fermann ME, Hariharan A, Galvanauskas A, Harter D.
PMID: 18183087
Opt Lett. 1997 Jan 01;22(1):13-5. doi: 10.1364/ol.22.000013.

We report efficient frequency doubling of passively mode-locked femtosecond erbium-fiber lasers. Quasi-phase-matched second-harmonic generation in periodically poled lithium niobate is used to generate 8.1 mW of 190-fs (FWHM), 90-pJ pulses at 777 nm with a conversion efficiency greater than...

Engineerable compression of ultrashort pulses by use of second-harmonic generation in chirped-period-poled lithium niobate.

Optics letters

Arbore MA, Galvanauskas A, Harter D, Chou MH, Fejer MM.
PMID: 18188233
Opt Lett. 1997 Sep 01;22(17):1341-3. doi: 10.1364/ol.22.001341.

We demonstrate the use of an aperiodic quasi-phase-matching (QPM) grating to generate second-harmonic pulses that are stretched or compressed relative to input pulses at the fundamental frequency. We frequency doubled an externally chirped erbium-doped fiber laser generating 17-ps (FWHM)...

Nanosecond-to-picosecond pulse compression with fiber gratings in a compact fiber-based chirped-pulse-amplification system.

Optics letters

Galvanauskas A, Krug PA, Harter D.
PMID: 19876248
Opt Lett. 1996 Jul 15;21(14):1049-51. doi: 10.1364/ol.21.001049.

A chirped, 12-cm-long fiber Bragg grating with 10-nm spectral bandwidth was employed in place of a conventional diffraction grating pair compressor in a compact fiber-based high-energy chirped-pulseamplification system. Initial nanosecond chirped pulses from a fast-tuned laser diode were compressed...

Correction: Complex Breakpoints and Template Switching Associated with Non-canonical Termination of Homologous Recombination in Mammalian Cells.

PLoS genetics

Hartlerode AJ, Willis NA, Rajendran A, Manis JP, Scully R.
PMID: 27959912
PLoS Genet. 2016 Dec 13;12(12):e1006509. doi: 10.1371/journal.pgen.1006509. eCollection 2016 Dec.

[This corrects the article DOI: 10.1371/journal.pgen.1006410.].

Showing 1 to 12 of 72 entries