55 research outputs found
Ergebnisse des Unterrichts in der Harmonielehre an Lehrerseminaren. Herausgegeben von Karl Seiffert.
No full text60 p. 23 cm
Stücke, piano, op. 83
No full text15 p. 33 cm. No. 1. Plauderei.--No. 2. Lustige Fahrt.--3. Frühlingsreigen.--No. 4. Kleine Erzählung.--No. 5. Jagdstücken
The PHOTOSYNTHESIS AFFECTED MUTANT68–LIKE Protein Evolved from a PSII Assembly Factor to Mediate Assembly of the Chloroplast NAD(P)H Dehydrogenase Complex in Arabidopsis
Get PDFIn vascular plants, the chloroplast NAD(P)H dehydrogenase complex (NDH-C) is assembled from five distinct subcomplexes, the membrane-spanning (subM) and the luminal (subL) subcomplexes, as well as subA, subB, and subE. The assembly process itself is poorly understood. Vascular plant genomes code for two related intrinsic thylakoid proteins, PHOTOSYNTHESIS-AFFECTED MUTANT68 (PAM68), a photosystem II assembly factor, and PHOTOSYNTHESIS-AFFECTED MUTANT68-LIKE (PAM68L). As we show here, inactivation of Arabidopsis thaliana PAM68L in the pam68l-1 mutant identifies PAM68L as an NDH-C assembly factor. The mutant lacks functional NDH holocomplexes and accumulates three distinct NDH-C assembly intermediates (subB, subM, and subA+L), which are also found in mutants defective in subB assembly (ndf5) or subM expression (CHLORORESPIRATORY REDUCTION4-3 mutant). NDH-C assembly in the cyanobacterium Synechocystis sp PCC 6803 and the moss Physcomitrella patens does not require PAM68 proteins, as demonstrated by the analysis of knockout lines for the single-copy PAM68 genes in these species. We conclude that PAM68L mediates the attachment of subB- and subM-containing intermediates to a complex that contains subA and subL. The evolutionary appearance of subL and PAM68L during the transition from mosses like P. patens to flowering plants suggests that the associated increase in the complexity of the NDH-C might have been facilitated by the recruitment of evolutionarily novel assembly factors like PAM68L
Neuer deutscher Parnass : Silberblicke aus der Lyrik unserer Tage /
No full textMode of access: Internet
Feldzugserinnerungen aus dem kriegsjahre 1809,
No full textAllgemeine einleitung von F. M. Kircheisen.-1. Graf Eugen von Czernin und Chudenic: Erlebnisse eines österreichischen edelmannes.-2. Otto August Rühle von Lilienstern: Erlebnisse eines sächsischen offiziers.-3. Cadetde Gassicourt: Aus den papieren eines apothekers der französlschen armee.-4. Albrecht Adam: Aus den erlebnissen eines schlachtenmalers.-5. Karoline Pichler: Aus den denkwürdigkeiten einer Wiener schriftstellerin.-6. Friedrich Ludwig von Wachholtz: Der zug des herzogs von Braunschweig nach Norddeutschland.-7. Neigebauer: Schills zug nach Stralaund und sein ende.-8. C. von Scriba: Der zug Schills nach Stralsund.Mode of access: Internet
Vincenzo Vitiello, "Palabras sin imágenes, palabras en sí mismas hendidas, fragmentos de palabras".
No full textTraduzione del saggio di Vincenzo Vitiello, "Palabras sin imágenes, palabras en sí mismas hendidas, fragmentos de palabras"
Polarization, Microscopic Origin, and Mode Structure of Luminescence and Lasing from Single ZnO Nanowires
No full textThe emission spectrum of individual single crystalline ZnO nanowires shows three regimes characterized by distinct polarization properties and spatial emission patterns along the length of the wire. In the visible range below 2.9 eV, emission is polarized along the long axis of the wire, along the c-axis (E//c). In the second regime between 2.9 and 3.22 eV, Fabry-Pérot guided modes polarized perpendicular to the wire (E⊥c) prevail. From their dispersion, it is clear that these modes signify strong coupling between the B-exciton and linearly polarized transverse electric modes that are guided by the wire and trapped between the wire end facets. The third regime is characterized by uniform emission along the wire and a marked dip in the polarization at around the electronic band gap at 3.3 eV. Lasing is observed only in the second regime in which strong light-matter interaction prevails
3D Photoelectrode for Dye Solar Cells Realized by Laser Micromachining of Photosensitive Glass
Get PDFAn explorative dye solar cell architecture based on the implementation of a 3D micropatterned photoelectrode is disclosed here. An array of conical micropillars has been realized by laser micromachining of photosensitive glass which has been advantageously used as a substrate for deposition of a thin transparent conductive layer and a thick mesoporous TiO2 electrode. A significantly higher photocurrent density has been detected as an effect of the extended overall absorbing area of the micropatterned photoelectrode with respect to a conventional 2D reference photoelectrode. This enhancement can also be partially imputable to a not negligible “waveguide effect” occurring within the glass micropillars
Photo-reduction of silver salts on highly heterogeneous lead zirconate titanate
Get PDFThis paper presents the work undertaken to determine the influences on the photo-induced growth of silver nanoclusters on the surfaces of lead zirconate titanate thin films. The lead zirconate titanate films were grown on indium tin oxide coated glass. They exhibited a highly textured surface and can be treated as wide bandgap semiconductors that exhibit ferroelectric behaviour. We show that there is a preferential deposition of silver metal on the ferroelectric films that is related not only to the polarization state of the ferroelectric domains but also to the surface defects such as grain boundaries and defects within the film. The greatest deposition rates are found to occur at grain boundaries where there is an approximately 40:1 ratio of silver clusters when compared to the native positive domains exhibited by the lead zirconate titanate. We propose that the mechanism for cluster growth depends on the availability, and diffusion rate, of electrons into the growing cluster and that the clusters grow from a discrete nucleation point. We also show that the growth of a monolayer of silver is sufficient to prevent the formation of electron–hole pairs by blocking the UV irradiation and that the silver nanoparticles are readily removed from the surface using an ultrasonic bath leading to a possible new method of manufacturing metal nanoparticles
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