Abstract: This invention relates to a novel method and composition for controlling houseflies by fumigant activity by contact with the vapors of the compound O-(4-methylthiophenyl)-O,O-dimethylphosphorothioate.

Abstract: A hybrid propulsion system particularly for automotive application including a subambient pressure cycle gas turbine engine having a primary turbine-compressor rotor assembly connected to a load shaft and a secondary turbine-compressor rotor assembly gas coupled with the primary rotor assembly, a flywheel rotatable with the secondary rotor assembly, and variable geometry nozzles at the turbines operative during engine operation at a steady state power output level to effect partial motive fluid expansion at the primary turbine to drive the load and the primary compressor and partial motive fluid expansion at the secondary turbine to drive the secondary compressor which maintains subambient pressure and during engine operation at a peak power output level to effect substantially total motive fluid expansion across only the primary turbine for increased power at the load shaft, the flywheel being operative during peak power level operation to drive the secondary compressor to maintain total motive fluid expansi

Abstract: An automotive single shaft gas turbine engine has a monorotor with a plurality of radial flow compressor blades thereon discharging compressed air to a recuperator for transferring heat from engine exhaust to the inlet combustion air to a combustor which produces motive fluid directed across a plurality of radial inflow turbine vanes on the monorotor and wherein the automotive gas turbine engine is further associated with an exhaust flow system including the regenerator, a series connected intercooler and a secondary compressor to produce a subatmospheric pressure source in the engine gas cycle to improve the thermal efficiency of the engine cycle and to further define a vacuum source for operating automotive accessories; and to provide a heat source at subatmospheric pressure for passenger compartment heater operation. The subatmospheric source is connected to the secondary compressor which is operative to compress turbine exhaust gas back to one atmosphere of pressure for discharge to the environment.

Abstract: Compounds having the formula ##STR1## in which X is a halogen, R.sub.1 is lower alkyl, R.sub.2 is lower alkyl, and R.sub.3 is lower alkyl, lower alkynyl, or cyano. The compounds have been found to have utility as herbicides, particularly as pre-emergence herbicides.

Abstract: A lock-up clutch for a torque converter wherein the clutch is engaged with the impeller by centrifugal force. The clutch is drive connected to the turbine through a primary drive spring, disposed in a circumferential direction, so that relative angular movement initiated by engine torsional vibrations occur between the clutch and turbine. A secondary clutch engagement control spring is connected in a generally radial direction between the clutch and turbine. The secondary spring provides a clutch holdoff force at low clutch speeds and a clutch engagement intensifier force after engagement. A friction member is disposed between the clutch and the turbine to dampen the engine torsional vibrations.