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An Orifice Plate Pulse Column for Liquid-Liquid Extraction

Description: A study was made of the performance of an orifice plate pulse column which is essentially a spray column containing internal constrictions in the form of orifices. The chemical system studied was acetic acid-waterhexone, and the variables considered were pulse frequency, throughput, phase continuity, and direction of solute transfer. For comparison purposes, several runs were made with a conventional spray column. Curves are presented showing the effect of the column variables on the column eff… more
Date: August 23, 1954
Creator: O'Brien, D. C.
Partner: UNT Libraries Government Documents Department
open access

Neutron Capture and the Production of 60-Fe in Stellar Environments

Description: The observation of gamma rays associated with the decay of {sup 26}Al and {sup 60}Fe can provide important information regarding ongoing nucleosynthesis in our galaxy. The half-lives of these radioisotopes (7.2 x 10{sup 5} y and 1.5 x 10{sup 6} y, respectively) are long compared to the interval between synthesis events such as supernovae, so they build up in a steady state in the interstellar medium (centered on the galactic plane, where massive stars reside), yet short enough that gamma radiat… more
Date: August 23, 2005
Creator: Kelley, K
Partner: UNT Libraries Government Documents Department
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