Abstract: This invention relates to an apparatus for the humidification of a gas, and it comprises an outer container having an inner chamber and a top cover. Within the inner chamber is a helix-shaped gas bubble conveyer. Water is introduced into the container, which in turn, fills the chamber. Gas bubbles are introduced into the chamber, and as they traverse the helix pathway, they are saturated with the water. Means are provided for recirculating the water and maintaining it at any desired temperature.

Abstract: 2-Substituted-3-disubstituted-4,5,6,7-substituted or unsubstituted phthalimidines, e.g., 3-t-butyl-5-chloro-3-hydroxy-2-methylphthalimidine prepared by treating a substituted or unsubstituted N-substituted-2-lithiobenzamidelithium salts with a substituted acetylhalide. The compounds are useful as minor tranquilizers/sedative hypnotics.

Abstract: Apparatus and process for detecting the products of either liquid or gas chromatographic analysis, which products may be either radioactively tagged or not tagged. In one aspect, it provides a moving wire apparatus for conveying a liquid chromatographic sample through a combustion furnace, where the combustion products are conveyed to a catalytic system. Non-radioactive samples are routed through a nickel catalytic converter; and thence, to a flame ionisation detector. Radioactive samples are conveyed from the combustion furnace through either a copper-oxide or an iron catalytic furnace, depending upon whether the sample is tagged with Carbon-14 or tritium. The products of the catalytic furnaces are detected by means of a radioactive detector. Means are also provided for introducing gas chromatographic products into the system for detection.

Abstract: Disclosed herein is circuitry for producing a signal proportional to the rate of recurrence of a periodic input signal applied to the circuitry. When an input pulse is received a timing circuit is energized to charge a capacitor to a predetermined level. The capacitor is then discharged through a resistance circuit having resistance portions which are electronically switched in and out of the circuit so that the discharge, rate of the capacitor defines the desired rate function. Then, upon commencement of a subsequent pulse a sample and hold circuit is actuated to sample the discharge level of the capacitor to provide an accurate indication of the pulse rate.