Bembidion (Peryphanes) italicum DE MONTE 1943 : Erstnachweis nördlich der Schweizer Alpen (Coleoptera, Carabidae)

Aufgrund von Genitaluntersuchungen grösserer Serien der Gattung Bembidion aus dem Gebiet des Goldauer Bergsturzes (Kanton Schwyz) konnte Bembidion (Peryphanes) italicum De Monte 1943 erstmals nördlich der Schweizer Alpen nachgewiesen werden. Die Art besiedelt in der Schweiz eher feuchte, mergelig-tonige Pionierstandorte meist in Gewässernähe. Ab einem Gesamtdeckungsgrad der Vegetationsschicht von mehr als 35% wurden die Lebensräume im Projektgebiet nicht mehr besiedelt. – Bembidion (Peryphanes) italicum De Monte, 1943 – First record north of the Swiss Alps (Coleoptera: Carabidae). Due to genital examination of larger series of species of the genus Bembidion Latreille, 1802 in the area of the Goldauer landslide (canton of Schwyz), Bembidion (Peryphanes) italicum De Monte, 1943 was detected for the first time north of the Swiss Alps. In Switzerland this species colonizes rather humid, marly-clay pioneer locations in proximity of bodies of water. Habitats exceeding 35% coverage of the vegetation layer were not populated within the project area

Dissociative photoionization of NO across a shape resonance in the XUV range using circularly polarized synchrotron radiation.

We report benchmark results for dissociative photoionization (DPI) spectroscopy and dynamics of the NO molecule in the region of the σ* shape resonance in the ionization leading to the NO+(c3Π) ionic state. The experimental study combines well characterized extreme ultraviolet (XUV) circularly polarized synchrotron radiation, delivered at the DESIRS beamline (SOLEIL), with ion-electron coincidence 3D momentum spectroscopy. The measured (N+, e) kinetic energy correlation diagrams reported at four discrete photon energies in the extended 23-33 eV energy range allow for resolving the different active DPI reactions and underline the importance of spectrally resolved studies using synchrotron radiation in the context of time-resolved studies where photoionization is induced by broadband XUV attosecond pulses. In the dominant DPI reaction which leads to the NO+(c3Π) ionic state, photoionization dynamics across the σ* shape resonance are probed by molecular frame photoelectron angular distributions where the parallel and perpendicular transitions are highlighted, as well as the circular dichroism CDAD(θe) in the molecular frame. The latter also constitute benchmark references for molecular polarimetry. The measured dynamical parameters are well described by multichannel Schwinger configuration interaction calculations. Similar results are obtained for the DPI spectroscopy of highly excited NO+ electronic states populated in the explored XUV photon energy range

Análisis de la narrativa audiovisual en la serie los simuladores, Lima 2019

La presente investigación tiene por finalidad analizar la narrativa audiovisual en la serie los simuladores de Damián Szifron, en donde se presentas historias cotidianas con alguna situación a resolver y es en esta donde entran a tallar los protagonistas de la serie, bien llamados “los simuladores”, este producto audiovisual se estrenó el 21 de Marzo del 2002 en la Argentina y hoy por hoy lo tenemos al alcance de un click en la plataforma de Netflix y YouTube, cabe resaltar que se han hecho réplicas de la serie en los países como México, Rusia, España y otros. Se utilizó como teoría la narratología y como variable la narrativa audiovisual, se desarticuló como dimensiones el género, contenido narrativo, acción, narrador y sonido, se empleó una ficha de observación como instrumento, la cual pasó por un proceso de validación de expertos, se midió la confiabilidad de estás validaciones a través del Coeficiente de V de Aiken, obteniendo el 94%. La metodología utilizada es de enfoque cualitativo, de tipo aplicado y lleva como diseño el estudio de caso, se procedió a aplicar el instrumento y posteriormente a interpretar lo observado en cada una de las fichas. Se concluye en que el buen manejo, la estructuración y buena complementación de los elementos observados llevó al éxito el objeto de estudio

Estado de los diarios digitales en República Dominicana : enero-julio, 2014

La presente investigación analiza la situación de los medios digitales en la República Dominicana, con el objetivo de realizar una serie de recomendaciones para la mejora de estos medios online emergentes. Se persigue cambiar la percepción que los medios digitales tienen que estar escudados en grandes cabeceras, estos pueden ser autónomos y completamente digitales sin la necesidad de una versión impresa del mismo. También hay que considerar que el Ciberperiodista debe contar con ciertas destrezas y habilidades para la administración de estos diarios digitales

Femtosecond XUV induced dynamics of the methyl iodide cation

Ultrashort XUV wavelength-selected pulses obtained with high harmonic generation are used to study the dynamics of molecular cations with state-to-state resolution. We demonstrate this by XUV pump - IR probe experiments on CH3I+ cations and identify both resonant and non-resonant dynamics

Coherent electronic-vibrational dynamics in deuterium bromide probed via attosecond transient absorption spectroscopy

Ultrafast laser excitation can trigger multiplex coherent dynamics in molecules. Here, we report attosecond transient absorption experiments addressing simultaneous probing of electronic and vibrational dynamics in a prototype molecule, deuterium bromide (DBr), following its strong-field ionization. Electronic and vibrational coherences in the ionic X$^2\Pi_{3/2}$ and X$^2\Pi_{1/2}$ states are characterized in the Br-$3d$ core-level absorption spectra via quantum beats with 12.6-fs and 19.9-fs periodicities, respectively. Polarization scans reveal that the phase of the electronic quantum beats depends on the probe direction, experimentally showing that the coherent electronic motion corresponds to the oscillation of the hole density along the ionization-field direction. The vibrational quantum beats are found to maintain a relatively constant amplitude, whereas the electronic quantum beats exhibit a partial decrease in time. Quantum wave-packet simulations show that the decoherence effect from the vibrational motion is insignificant because of the parallel relation between the X$^2\Pi_{3/2}$ and X$^2\Pi_{1/2}$ potentials. A comparison between the DBr and HBr results suggests that rotation motion is responsible for the decoherence since it leads to initial alignment prepared by the strong-field ionization.Comment: 7 pages, 5 figure

Agonum (Olisares) hypocrita (Apfelbeck, 1904): Nachweise in der Schweiz und Festlegung des Rote Liste-Status sowie der nationalen Priorität (Coleoptera, Carabidae) Agonum (Olisares) hypocrita (Apfelbeck, 1904): Swiss records and assignment of the Red List Status and the National Conservation Priority (Coleoptera, Carabidae)

uploaded by Plazi for Mitteilungen der Schweizerischen Entomologischen Gesellschaf

Femtosecond XUV–IR induced photodynamics in the methyl iodide cation

The time-resolved photodynamics of the methyl iodide cation (CH3I+) are investigated by means of femtosecond XUV–IR pump–probe spectroscopy. A time-delay-compensated XUV monochromator is employed to isolate a specific harmonic, the 9th harmonic of the fundamental 800 nm (13.95 eV, 88.89 nm), which is used as a pump pulse to prepare the cation in several electronic states. A time-delayed IR probe pulse is used to probe the dissociative dynamics on the first excited $\tilde {A}\enspace {}^{2}\mathrm{A}_{1}$ state potential energy surface. Photoelectrons and photofragment ions—${\mathrm{C}\mathrm{H}}_{3}^{+}$ and I+—are detected by velocity map imaging. The experimental results are complemented with high level ab initio calculations for the potential energy curves of the electronic states of CH3I+ as well as with full dimension on-the-fly trajectory calculations on the first electronically excited state $\tilde {A}\enspace {}^{2}\mathrm{A}_{1}$, considering the presence of the IR pulse. The ${\mathrm{C}\mathrm{H}}_{3}^{+}$ and I+ pump–probe transients reflect the role of the IR pulse in controlling the photodynamics of CH3I+ in the $\tilde {A}\enspace {}^{2}\mathrm{A}_{1}$ state, mainly through the coupling to the ground state $\tilde {X}\enspace {}^{2}\mathrm{E}_{3/2,1/2}$ and to the excited $\tilde {B}\enspace {}^{2}\mathrm{E}$ state manifold. Oscillatory features are observed and attributed to a vibrational wave packet prepared in the $\tilde {A}\enspace {}^{2}\mathrm{A}_{1}$ state. The IR probe pulse induces a coupling between electronic states leading to a slow depletion of ${\mathrm{C}\mathrm{H}}_{3}^{+}$ fragments after the cation is transferred to the ground $\tilde {X}\enspace {}^{2}\mathrm{E}_{3/2,1/2}$ states and an enhancement of I+ fragments by absorption of IR photons yielding dissociative photoionization

Femtosecond XUV–IR induced photodynamics in the methyl iodide cation

The time-resolved photodynamics of the methyl iodide cation (CH3I+) are investigated by means of femtosecond XUV-IR pump-probe spectroscopy. A time-delay-compensated XUV monochromator is employed to isolate a specific harmonic, the 9th harmonic of the fundamental 800 nm (13.95 eV, 88.89 nm), which is used as a pump pulse to prepare the cation in several electronic states. A time-delayed IR probe pulse is used to probe the dissociative dynamics on the first excited state potential energy surface. Photoelectrons and photofragment ions - and I+ - are detected by velocity map imaging. The experimental results are complemented with high level ab initio calculations for the potential energy curves of the electronic states of CH3I+ as well as with full dimension on-the-fly trajectory calculations on the first electronically excited state, considering the presence of the IR pulse. The and I+ pump-probe transients reflect the role of the IR pulse in controlling the photodynamics of CH3I+ in the state, mainly through the coupling to the ground state and to the excited state manifold. Oscillatory features are observed and attributed to a vibrational wave packet prepared in the state. The IR probe pulse induces a coupling between electronic states leading to a slow depletion of fragments after the cation is transferred to the ground states and an enhancement of I+ fragments by absorption of IR photons yielding dissociative photoionization. © 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft