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Assessments verbinden, Interpretationen erweitern?

science instruction

Ehmke T.
GSID: lf11bGzlh4oJ
AK van den Ham, T Ehmke, A Nissen… - Zeitschrift für …, 2017 - Springer

Zusammenfassung Das Nationale Bildungspanel weist im Bereich der mathematischen Kompetenzmessungen für die neunte Klassenstufe (NEPS-K9) große Überschneidungen …

Distribution of autogenous and host-derived chemical defenses inOreina leaf beetles (Coleoptera: Chrysomelidae).

Journal of chemical ecology

Pasteels JM, Dobler S, Rowell-Rahier M, Ehmke A, Hartmann T.
PMID: 24234524
J Chem Ecol. 1995 Aug;21(8):1163-79. doi: 10.1007/BF02228318.

The pronotal and elytral defensive secretions of 10Oreina species were analyzed. Species feeding on Apiaceae, i.e.,O. frigida andO. viridis, or on Cardueae (Asteraceae), i.e.,O. bidentata, O. coerulea, andO. virgulata, produce species-specific complex mixtures of autogenous cardenolides.O. melanocephala, which feeds...

Harmonic generation from relativistic plasma surfaces in ultrasteep plasma density gradients.

Physical review letters

Rödel C, an der Brügge D, Bierbach J, Yeung M, Hahn T, Dromey B, Herzer S, Fuchs S, Pour AG, Eckner E, Behmke M, Cerchez M, Jäckel O, Hemmers D, Toncian T, Kaluza MC, Belyanin A, Pretzler G, Willi O, Pukhov A, Zepf M, Paulus GG.
PMID: 23005951
Phys Rev Lett. 2012 Sep 21;109(12):125002. doi: 10.1103/PhysRevLett.109.125002. Epub 2012 Sep 19.

Harmonic generation in the limit of ultrasteep density gradients is studied experimentally. Observations reveal that, while the efficient generation of high order harmonics from relativistic surfaces requires steep plasma density scale lengths (L(p)/λ < 1), the absolute efficiency of...

New advanced operational regime on the W7-AS stellarator.

Physical review letters

McCormick K, Grigull P, Burhenn R, Brakel R, Ehmler H, Feng Y, Gadelmeier F, Giannone L, Hildebrandt D, Hirsch M, Jaenicke R, Kisslinger J, Klinger T, Klose S, Knauer JP, König R, Kühner G, Laqua HP, Naujoks D, Niedermeyer H, Pasch E, Ramasubramanian N, Rust N, Sardei F, Wagner F, Weller A, Wenzel U, Werner A.
PMID: 12097046
Phys Rev Lett. 2002 Jul 01;89(1):015001. doi: 10.1103/PhysRevLett.89.015001. Epub 2002 Jun 11.

A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and low impurity confinement times, and edge-localized radiation. Impurity accumulation...

Surface states and the charge of a dust particle in a plasma.

Physical review letters

Bronold FX, Fehske H, Kersten H, Deutsch H.
PMID: 18999756
Phys Rev Lett. 2008 Oct 24;101(17):175002. doi: 10.1103/PhysRevLett.101.175002. Epub 2008 Oct 20.

We investigate electron and ion surface states of a negatively charged dust particle in a gas discharge and identify the charge of the particle with the electron surface density bound in the polarization-induced short-range part of the particle potential....

An inducible saponine cleaving glycosidase from fusarium and its application to the production of solasodine.

Planta medica

Ehmke A.
PMID: 17345432
Planta Med. 1986 Dec;(6):507. doi: 10.1055/s-2007-969277.

No abstract available.

Crystallization in two-component Coulomb systems.

Physical review letters

Bonitz M, Filinov VS, Fortov VE, Levashov PR, Fehske H.
PMID: 16384315
Phys Rev Lett. 2005 Dec 02;95(23):235006. doi: 10.1103/PhysRevLett.95.235006. Epub 2005 Dec 02.

The analysis of Coulomb crystallization is extended from one-component to two-component plasmas. Critical parameters for the existence of Coulomb crystals are derived for both classical and quantum crystals. In the latter case, a critical mass ratio of the two...

Developmental trajectories and breakdown in F1 interpopulation hybrids of Tribolium castaneum.

Ecology and evolution

Drury DW, Ehmke RC, Jideonwo VN, Wade MJ.
PMID: 23919145
Ecol Evol. 2013 Jul;3(7):1992-2001. doi: 10.1002/ece3.536. Epub 2013 May 24.

When hybrid inviability is an indirect by-product of local adaptation, we expect its degree of severity between pairs of populations to vary and to be sensitive to the environment. While complete reciprocal hybrid inviability is the outcome of the...

Order, criticality, and excitations in the extended Falicov-Kimball model.

Physical review letters

Ejima S, Kaneko T, Ohta Y, Fehske H.
PMID: 24484030
Phys Rev Lett. 2014 Jan 17;112(2):026401. doi: 10.1103/PhysRevLett.112.026401. Epub 2014 Jan 13.

Using exact numerical techniques, we investigate the nature of excitonic (electron-hole) bound states and the development of exciton coherence in the one-dimensional half-filled extended Falicov-Kimball model. The ground-state phase diagram of the model exhibits, besides band-insulator and staggered orbital...

Mie scattering by a charged dielectric particle.

Physical review letters

Heinisch RL, Bronold FX, Fehske H.
PMID: 23368320
Phys Rev Lett. 2012 Dec 14;109(24):243903. doi: 10.1103/PhysRevLett.109.243903. Epub 2012 Dec 10.

We study for a dielectric particle the effect of surplus electrons on the anomalous scattering of light arising from the transverse optical phonon resonance in the particle's dielectric function. Excess electrons affect the polarizability of the particle by their...

Magnetic short-range order versus long-range order in the Hubbard model.

Physical review. B, Condensed matter

Fehske H, Ihle D, Trapper U.
PMID: 9980267
Phys Rev B Condens Matter. 1995 Oct 15;52(16):11553-11556. doi: 10.1103/physrevb.52.r11553.

No abstract available.

Polarons and bipolarons in strongly interacting electron-phonon systems.

Physical review. B, Condensed matter

Fehske H, Röder H, Wellein G.
PMID: 9982523
Phys Rev B Condens Matter. 1996 Apr 15;53(15):9666-9675. doi: 10.1103/physrevb.53.9666.

No abstract available.

Showing 1 to 12 of 160 entries