Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.

Abstract: A non-dispersive photoacoustic gas detector comprises an infrared light source, a closed chamber, a gas sample disposed within the closed chamber, and an acoustic sensor in fluid communication with the dosed chamber. The dosed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the gas sample comprises a gas or a mixture of at least two gases.

Abstract: A non-dispersive photoacoustic gas detector includes an infrared light source, a first closed chamber, a first acoustic sensor in fluid communication with the first closed chamber, a second closed chamber, and a second acoustic sensor in fluid communication with the second closed chamber. The first closed chamber comprises a plurality of windows that are substantially transparent to infrared light from the infrared light source. The second closed chamber comprises at least one window that is substantially transparent to infrared light from the infrared light source, and the first closed chamber is arranged in series with the second closed chamber between the infrared light source and the second closed chamber.

Abstract: The present subject matter relates generally to compounds having the formula (I): wherein each of X, Y, R1, R2, R3, R4, and n are as defined herein. Compounds of formula (I) may act as inhibitors of the thioredoxin reductase enzyme system. The subject matter also relates to use, formulation and preparation of the compounds. The compounds may be useful in the treatment of inflammatory and oxidative diseases and conditions. The compounds may also provide useful anti-proliferative and anti-apoptotic effects.

Abstract: There is provided according to the invention a non-pressurised pharmaceutical liquid solution spray composition comprising: (i) buprenorphine; and a solvent comprising ethanol which composition is substantially free of chloride. There is also provided according to the invention a non-pressurised pharmaceutical liquid solution spray formulation comprising: (i) buprenorphine; (ii) a solvent comprising ethanol; and (iii) one or more antioxidants each of a molar ratio of antioxidant:buprenorphine between 0.2:1 and 25:1.

Abstract: A thermostat includes a bimetallic snap-action disc for actuating an electrical switch, a stop engaging one edge portion of the disc, a switch contact operating member engaging an opposite disc edge portion, and a fulcrum disposed between the disc edge portions and about which the disc moves whereby to amplify the movement of the disc. The fulcrum is formed by an appropriate shaping of a base wall of a thermostat housing. The switch contacting operating member is arranged to act on a leaf spring mounting a movable switch contact that engages the free end of a tongue formed by a U-shaped slot within the leaf spring whereby to permit overtravel of the disc without causing significant alteration of the disc opening temperature.