Electron energy loss spectroscopy with parallel readout of energy and momentum

We introduce a high energy resolution electron source that matches the requirements for parallel readout of energy and momentum of modern hemispherical electron energy analyzers. The system is designed as an add-on device to typical photoemission chambers. Due to the multiplex gain, a complete phonon dispersion of a Cu(111) surface was measured in seven minutes with 4 meV energy resolution

Novel Features of Potassium and Sodium Vibrations on Copper Surfaces Observed by High-Resolution Electron-Energy-Loss Spectroscopy

High-resolution electron-energy-loss spectra of alkali metals adsorbed on Cu show three unexpected features: the adsorbate-substrate stretching frequency does not change with coverage, within 1 meV on Cu(111) and Cu(110), in agreement with the covalent picture of chemisorption; the spectra show an unusual overtone which is interpreted as a consequence of a strongly non linear relationship between the surface dipole moment and the adsorbate-substrate distance; the dynamical dipole moment is strongly coverage dependent.

Paola Corti B., Rodrigo Moreno J., José Luis Widow L. (eds.), El Fin de la Historia, Universidad Adolfo Ibañez - Ediciones Altazor, Viña del Mar, 2008, ISBN 978-956-7472-61-1, 298 p.

Fil: Ibach, Hermann

Bridging the Gap: A Guided Journey Engaging the Christian Faith Across Generations

The need that is addressed through this project portfolio is the recognition that there is a lack of space for intergenerational relationships and conversations around spirituality and the Christian faith to occur between older generations and Generation Z specifically. As we look at the church today, we are seeing many different gaps occurring between generations, these two in particular. The focus of this project portfolio is to address this problem of the generational gaps within the church in hopes of creating long-lasting intergenerational relationships. The problem is addressed by gathering individuals from different generations and taking them through a sixmonth program in which they will study about different aspects of the Christian faith and where we see these generational gaps occurring. The goal is to gather these individuals together to have conversations with one another so they might have a deeper understanding and appreciation for one another. The program will include online, in-person, and retreat aspects. The purpose of each of these aspects is for the individuals from Generation Z as well as older generations to feel comfortable within different platforms. With each of the portions, the individuals will have the chance to interact with one another on a weekly basis to help foster deeper connections with one another. The program will culminate in a final, day-long retreat. This program will be run through a coffee shop ministry as well as a church setting. Individuals need to have a desire to develop relationships with Generation Z/older generations and have a relationship with Christ

Orientation Dependence of Step Stiffness: Failure of SOS and Ising Models to Describe Experimental Data

We have investigated the step stiffness on Cu(001) surfaces as a function of step orientation by two independent methods at several temperatures near 300 K. Both sets of data agree well and show a substantial dependence of the stiffness on the angle of orientation. With the exception of steps oriented along $$, the experimental stiffness is significantly larger than the stiffness calculated within the solid-on-solid (SOS) model and the Ising-model, even if next nearest-neighbor interactions are taken into account. Our results have considerable consequences for the understanding and for the theoretical modeling of equilibrium and growth phenomena, such as step meandering instabilities.Comment: 5 pages, 2 figure

EFFECTS OF SNAKE FUNGAL DISEASE ON THE SURVIVAL AND GROWTH OF THE QUEENSNAKE (\u3ci\u3eREGINA SEPTEMVITTATA\u3c/i\u3e)

Having only emerged as a threat to snakes in 2006, relatively little is known of snake fungal disease’s (SFD) impacts on demographic processes, particularly survival and growth. I used data from an extensive capture-mark-recapture study to examine survival and growth in central Kentucky Queensnake (Regina septemivittata) populations. I found that diseased snakes and healthy snakes possessed similar monthly survival estimates (SFD positive 0.9687, 95% CI 0.8444 to 0.9944; SFD negative 0.8735, 95% CI 0.7518 to 0.9402) and that disease state transition probability from SFD negative to SFD positive, and SFD positive to SFD negative were also similar (N-P 0.4807, 95% CI 0.3395 to 0.6251; P-N 0.3461 95% CI 0.2523 to 0.4536). Additionally, I found that diseased snakes exhibited heightened growth rates (1.12 mm/month females, 0.91 mm/month males) compared to healthy snakes (0.73 mm/month females, 0.59 mm/month males)

Effective mass in quasi two-dimensional systems

The effective mass of the quasiparticle excitations in quasi two-dimensional systems is calculated analytically. It is shown that the effective mass increases sharply when the density approaches the critical one of metal-insulator transition. This suggests a Mott type of transition rather than an Anderson like transition.Comment: 3 pages 3 figure

The Neverout March : and Two step

https://digitalcommons.library.umaine.edu/mmb-ps/2001/thumbnail.jp