Fatigue testing device Patent

Fatigue testing device applying random discrete load levels to test specimen and applicable to aircraft structure

The (future) Cherenkov Telescope Array CTA

The international CTA consortium has recently entered the preparatory phase towards the construction of the next-generation Cherenkov Telescope Array CTA. This experiment will be a successor to and will benefit from the return of experience from the three major current-generation arrays H.E.S.S., MAGIC and VERITAS. It aims to significantly improve upon the sensitivity as well as the energy range of its highly successful predecessors. Construction is planned to begin by 2014, and when finished, CTA will be able to explore the highest-energy gamma-ray sky in unprecedented detail. The current status of the CTA project is presented, together with its expected performance based on Monte Carlo studies

Hanging drop crystal growth apparatus

This invention relates generally to control systems for controlling crystal growth, and more particularly to such a system which uses a beam of light refracted by the fluid in which crystals are growing to detect concentration of solutes in the liquid. In a hanging drop apparatus, a laser beam is directed onto drop which refracts the laser light into primary and secondary bows, respectively, which in turn fall upon linear diode detector arrays. As concentration of solutes in drop increases due to solvent removal, these bows move farther apart on the arrays, with the relative separation being detected by arrays and used by a computer to adjust solvent vapor transport from the drop. A forward scattering detector is used to detect crystal nucleation in drop, and a humidity detector is used, in one embodiment, to detect relative humidity in the enclosure wherein drop is suspended. The novelty of this invention lies in utilizing angular variance of light refracted from drop to infer, by a computer algorithm, concentration of solutes therein. Additional novelty is believed to lie in using a forward scattering detector to detect nucleating crystallites in drop

Measurements and Simulation Studies of Piezoceramics for Acoustic Particle Detection

Calibration sources are an indispensable tool for all detectors. In acoustic particle detection the goal of a calibration source is to mimic neutrino signatures as expected from hadronic cascades. A simple and promising method for the emulation of neutrino signals are piezo ceramics. We will present results of measruements and simulations on these piezo ceramics.Comment: 5 pages, 5 figure

Aquilegia, Vol. 16 No. 6, November-December 1992: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1065/thumbnail.jp