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Results: 260
Positronium formation in molecular oxygen
New measurements of the positronium (Ps) formation cross section in molecular oxygen have been made using the 'positron loss' technique used in earlier measurements in the noble gases-the reduction in beam intensity being...
Positronium formation in molecular oxygen
New measurements of the positronium (Ps) formation cross section in molecular oxygen have been made using the 'positron loss' technique used in earlier measurements in the noble gases-the reduction in beam intensity being...
Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy
The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K...
Observations of the growth and sublimation of water ice films by variable-energy positron annihilation spectroscopy
The near-surface structure of thin vapor-deposited water ice films during formation and sublimation in vacuum has been probed using in-situ positron annihilation spectroscopy. While amorphous solid water films prepared at 120K...
Nanostructuring of β-MnO<sub>2</sub>
Manganese oxide materials are attracting considerable interest for clean energy storage applications such as rechargeable Li ion and Li–air batteries and electrochemical capacitors. The electrochemical behavior of nanostructured...
The diffusion of HR practices in Chinese workplaces and organizational outcomes
How relevant are human resource (HR) practices in economies undergoing significant economic transition from a command to a market-based system? Using data drawn from a large sample of Chinese establishments, the authors...
Automated detection and quantification of single RNAs at cellular resolution in zebrafish embryos.
L Carine Stapel, Benoit Lombardot, Coleman Broaddus, Dagmar Kainmueller, Florian Jug, Eugene W Myers, Nadine L Vastenhouw
Jun 28, 2019
Analysis of differential gene expression is crucial for the study of cell fate and behavior during embryonic development. However, automated methods for the sensitive detection and quantification of RNAs at cellular resolution...
The diffusion of HR practices in Chinese workplaces and organizational outcomes
How relevant are human resource (HR) practices in economies undergoing significant economic transition from a command to a market-based system? Using data drawn from a large sample of Chinese establishments, the authors...
Nanostructuring of β-MnO<sub>2</sub>
Manganese oxide materials are attracting considerable interest for clean energy storage applications such as rechargeable Li ion and Li–air batteries and electrochemical capacitors. The electrochemical behavior of nanostructured...
Winthrop Receives Largest Single Gift in its History: $2.2 Million
Winthrop University
Jan 01, 0001
Designated to support theatre scholarships, the generous gift is from the estate of the late Dr. Ann Coleman Peyton, who worked in higher education. Peyton had family ties to the Carolinas: her mother, Mary Howey Kell Peyton...
Published by: Winthrop University
A tale of two studies on auditory training in children
Lorna F Halliday
Oct 03, 2019
In a previous article, Moore, Rosenberg and Coleman (Brain and Language, 2005, 94, 72-85) reported evidence for significant improvements in phonological awareness in mainstream children following 6 h of exposure to a...
Activation energies for vacancy migration, clustering and annealing in silicon
Paul G Coleman
Jan 01, 0001
A series of measurements have been performed at the University of Bath to study the evolution of vacancy-type structures in silicon. Isothermal annealing performed during positron beam-based Doppler broadening measurements have...
The Development of Transportation, With Special Emphasis Upon the Changing Importance of the Railroad in the United States
Nancy E. Coleman
Jan 01, 0001
This 80 page thesis examines the impact of transportation on the economy of the United States, with special emphasis on railway development.
transportation industry economic development utility rail system Commerce mergers Business Economic History Economics infrastructure Labor Relations Social and Behavioral Sciences Transportation
Published by: Ursinus College
Development of a spin-polarised positron beam
The development stages of a system for variable-energy spin-polarised positron beam spectroscopy are described. Methods for achieving maximum practical beam polarisation include a Na-22 source configuration with a low-Z backing...
S.C. Senators Present President DiGiorgio with Senate Resolution
Winthrop University
Jan 01, 0001
For these reasons and more, the South Carolina Senate honored DiGiorgio this spring for his 24 years of outstanding service. Senators Wes Hayes (R-York) and Creighton Coleman (D-Fairfield) presented the president with the...
Published by: Winthrop University
Ice and atoms
Paul G Coleman
Jan 01, 0001
This short review presents results of new positron and positronium (Ps) experiments in condensed matter and atomic physics, as an illustration of the satisfying variety of scientific endeavours involving positron beams which can...
Observation of residual disorder in the centre of amorphous solid water films after pore collapse at 125K
The rapid structural re-organisation of porous amorphous solid water, grown to thicknesses in the range 2.5-70 µm by vapour deposition on a copper substrate at 75K, after heating to 125K has been found to leave a µm-wide band of...
Observation of residual disorder in the centre of amorphous solid water films after pore collapse at 125K
The rapid structural re-organisation of porous amorphous solid water, grown to thicknesses in the range 2.5-70 µm by vapour deposition on a copper substrate at 75K, after heating to 125K has been found to leave a µm-wide band of...
Coupling between positronium formation and elastic positron-scattering channels in the rare gases
Measurements of elastic-scattering cross sections are presented for positron collisions with helium, neon, argon, krypton, and xenon around the threshold energy for positronium (Ps) formation. The elastic cross section falls...
Development of a spin-polarised positron beam
The development stages of a system for variable-energy spin-polarised positron beam spectroscopy are described. Methods for achieving maximum practical beam polarisation include a Na-22 source configuration with a low-Z backing...
Energy dependence of the positronium formation cross-section in argon
The positronium (Ps) formation cross-section, Q(Ps), for positron-argon interactions has been measured for incident positron energies from threshold to 60 eV, in an attempt to resolve the apparent discrepancy between earlier...
Programmed axon degeneration
Wallerian degeneration is a widespread mechanism of programmed axon degeneration. In the three decades since the discovery of the Wallerian degeneration slow (WldS) mouse, research has generated extensive knowledge of the...
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