We discuss new high-resolution (6.7 km/s) spectra of the associated absorption lines (AALs) in the radio-loud quasar 3C 191. The measured AALs have ionizations ranging from Mg I to N V, and multicomponent profiles that are blueshifted by ∼400 to ∼1400 km/s relative to the quasar’s broad emission lines. Excited-state absorption lines of Si II and C II imply volume densities of ∼300 cm and a nomi...

We analyse the relationship between nominal algebra and nominal rewriting, giving a new and concise presentation of equational deduction in nominal theories. With some new results, we characterise a subclass of equational theories for which nominal rewriting provides a complete and efficient procedure to check nominal algebra equality. This subclass includes specifications of lambda-calculus an...

An all-optical terahertz absorption technique for nondestructive characterization of nanometer-scale metal oxide thin films grown on silicon substrates is described. Example measurements of laser-deposited TiO2 and atomic layer-deposited films of HfO2 are presented to demonstrate applicability to pure Y2O3, Al2O3, and VOx and mixed combinatorial films as a function of deposition conditions and ...

The physical properties and shear bond strength of two resin-modified glass-ionomers: RMGIs (FJL and VT) and as a control, a conventional glass-ionomer: CGI (FJ), were evaluated. Ninety percent of the setting shrinkage under dry conditions and nominal hygroscopic expansion in water during 360 h occurred within the first 24 h. The nominal hygroscopic expansion of CGI was 0.38% while the RMGIs de...

The toxicity of all atomically stable metals in the periodic table, excluding Na, Mg, K, and Ca, was measured in one-week exposures using the freshwater amphipod Hyalella azteca in both Lake Ontario, Canada, and soft water (10% Lake Ontario). Metals were added as atomic absorption standards (63 metals), and also as anion salts for 10 metals. Lethal concentrations resulting in 50% mortality (LC5...

1. Introduction: Detecting the presence of water/ice within planetary regoliths is crucial for future manned exploration as well as understanding the geologic history of the surface. This project is directed at fabricating a simple apparatus that can quickly measure water/ice on lunar and planetary surfaces. Using our data and data acquired from the literature, we will estimate the possibility ...

EDLC cells based on activated carbon as host material electrodes were fabricated and tested. The MWCNT additive was added into the host material to form a nanocomposite and the effect of the MWCNTs concentration on improving the performance of the EDLC cells was explored. 1M TEABF4-PC solution was used as organic electrolyte. The nanocomposites functioned differently in improving the specific p...