Search results for "IAT"

Interspecific information on predation risk affects nest site choice in a passerine bird

2018

Abstract Background Breeding site choice constitutes an important part of the species niche. Nest predation affects breeding site choice, and has been suggested to drive niche segregation and local coexistence of species. Interspecific social information use may, in turn, result in copying or rejection of heterospecific niche characteristics and thus affect realized niche overlap between species. We tested experimentally whether a migratory bird, the pied flycatcher Ficedula hypoleuca, collects information about nest predation risk from indirect cues of predators visiting nests of heterospecific birds. Furthermore, we investigated whether the migratory birds can associate such information w…

SCOPE-Based Emulators for Fast Generation of Synthetic Canopy Reflectance and Sun-Induced Fluorescence Spectra

2017

Progress in advanced radiative transfer models (RTMs) led to an improved understanding of reflectance (R) and sun-induced chlorophyll fluorescence (SIF) emission throughout the leaf and canopy. Among advanced canopy RTMs that have been recently modified to deliver SIF spectral outputs are the energy balance model SCOPE and the 3D models DART and FLIGHT. The downside of these RTMs is that they are computationally expensive, which makes them impractical in routine processing, such as scene generation and retrieval applications. To bypass their computational burden, a computationally effective technique has been proposed by only using a limited number of model runs, called emulation. The idea …

Terahertz Spin‐to‐Charge Conversion by Interfacial Skew Scattering in Metallic Bilayers

2021

The efficient conversion of spin to charge transport and vice versa is of major relevance for the detection and generation of spin currents in spin‐based electronics. Interfaces of heterostructures are known to have a marked impact on this process. Here, terahertz (THz) emission spectroscopy is used to study ultrafast spin‐to‐charge‐current conversion (S2C) in about 50 prototypical F|N bilayers consisting of a ferromagnetic layer F (e.g., Ni81Fe19, Co, or Fe) and a nonmagnetic layer N with strong (Pt) or weak (Cu and Al) spin‐orbit coupling. Varying the structure of the F/N interface leads to a drastic change in the amplitude and even inversion of the polarity of the THz charge current. Rem…

A Theoretical and Experimental Investigation of the Spectroscopic Properties of a DNA-Intercalator Salphen-Type ZnIIComplex

2014

The photophysical and DNA-binding properties of the cationic zinc(II) complex of 5-triethylammonium methyl salicylidene ortho-phenylenediiminato (ZnL 2 + ) were investi- gated by a combination of experimental and theoretical methods. DFT calculations were performed on both the ground and the first excited states of ZnL 2 + and on its possi- ble mono- and dioxidation products, both in vacuo and in selected solvents mimicked by the polarizable continuum model. Comparison of the calculated absorption and fluores- cence transitions with the corresponding experimental data led to the conclusion that visible light induces a two-elec- tron photooxidation process located on the phenylenediimi- nato…

A concept for the extraction of the most refractory elements at CERN-ISOLDE as carbonyl complex ions

2021

The European physical journal / A 58(5), 94 (2022). doi:10.1140/epja/s10050-022-00739-1

Realization of time-resolved two-vacuum-ultraviolet-photon ionization

2009

International audience; Ultrafast dynamics of excited molecules is studied through time-resolved two-vacuum-ultraviolet (vuv)- photon ionization using a nonlinear volume autocorrelator unit. The two-vuv-photon process is induced by the intense fifth harmonic radiation of a femtosecond Ti:sapphire laser. In a proof-of-principle experiment, ultrafast dynamics of excited ethylene and oxygen molecules are investigated. Molecular decay times are deduced by comparing the experimental data with the results of a numerical model that accounts for the spatial and temporal characteristics of the harmonic field. The present experiments pave a convenient way for time domain investigations in the vuv-xuv s…

Total absorption γ -ray spectroscopy of niobium isomers

2019

15 pags. 17 figs., 5 tabs.

Correlation between tissue-harvesting method and donor-site with the yield of spheroids from adipose-derived stem cells

2022

Dinamikā veiktu kontroles rentgenogrāfijas izmeklējumu pamatojums pediatrijas pacientiem ar spieķa kaula distālās metafīzes lūzumu pēc konservatīvas …

2018

Bakalaura darba temats ir „Dinamikā veiktu kontroles rentgenogrāfijas pediatrijas pacientiem ar spieķa kaula distālās metafīzes lūzumu pēc konservatīvas terapijas”. Darba galvenais mērķis: izvērtēt dinamikā veiktu kontroles rentgenogrāfijas izmeklējumu nepieciešamību bērnu vecuma pacientiem ar spieķa kaula distālās metafīzes lūzumu pēc konservatīvas terapijas. Darba noslēgumā ir veikts pētījums, apkopoti pētījuma rezultāti, izstrādāti secinājumi un priekšlikumi, kas balstīti uz pētījuma rezultātiem. Darba apjoms ir 28 lapaspuses, to veido 4 nodaļas, 7 apakšnodaļas, darba ir izmantots 17 literatūras avotus, 6 pielikumi. Darbā iekļauts 2 tabulas, 13 attēli, no kuriem 3 ir pētījuma diagrammas.…

The Far-Reaching Consequences of Job Insecurity : A Review on Family-Related Outcomes

2017

Job insecurity (JI) appears a fairly stable job stressor in working life today and likely to impair employee well-being. This review article presents the key findings of studies examining the effects of perceived JI on family well-being (e.g., marital/parental role quality, work–family conflict). The results, based on 25 published peer-reviewed studies, suggest an association between JI and impaired family well-being. Thus, JI spills over into family life as proposed in the spillover theory of work–family interface. Furthermore, studies have found some evidence of crossover effects of JI from parents to children: parents’ JI relates to negative outcomes in children. These results support th…