Abstract: The camping tube grill is a grill that is quickly assembled to create a grilling surface over a fire pit and may be collapsed into a compact carrying case. The camping tube grill includes two tubular rails, several grill rods, a pair of U-shaped spacing bars, and a storage case into which the rails, rods and bars are placed for storage and transport. The grill rods and spacing bars are inserted within holes defined in the rails, forming a grilling surface. One rail has a greater diameter than the other rail so that when the camping tube grill is disassembled, the smaller rail is able to fit within the larger rail. The spacing bars and grill rods are then inserted within the smaller rail, and the assembly is packed together into the compact carrying case.

Abstract: A global positioning system receiver with a system and method for parallel synchronization. The novel receiver includes a correlator having plural demodulator channels for receiving a signal from a first satellite, and a processor for processing the signal from the first satellite using a plurality of the channels. The processor includes a parallel synchronization process for synchronizing the receiver with the signal. In an illustrative embodiment, the processor is adapted to instruct the plurality of channels to track the signal from the first satellite in parallel, each channel using a different timing hypothesis. Only the channel determined to have the correct timing is retained for tracking the satellite. For the first satellite only, the processor also demodulates the hand-over word and determines a GPS transmit time. The parallel synchronization process is then repeated for subsequent satellites in turn.

Abstract: A low power GPS tracking system. The novel system includes a first circuit adapted to collect samples of a signal for a first predetermined length of time and in accordance therewith generate an output signal, and a second circuit for cyclically powering on the first circuit for the first predetermined length of time and powering off the first circuit, or a portion thereof, for a second predetermined length of time. In an illustrative embodiment, the first circuit includes a receiver adapted to receive a GPS signal and output GPS data samples, and a processor adapted to calculate a navigation solution from the GPS data samples using an integrate and dump signal processing technique.

Abstract: A process to prepare compounds of formula I ##STR1## in which n=0, 1 or 2 comprising the cyclization of compounds of formula II ##STR2## in which n=0, 1 or 2. The cyclization may be effected in the presence of an organic or inorganic base or thermally at a temperature in the range 40.degree.-160.degree. C.Compounds of formula II and certain analogues thereof are disclosed as cardiovascular agents.

Abstract: A process to prepare compounds of formula I ##STR1## in which n=0, 1 or 2 comprising the cyclisation of compounds of formula II ##STR2## in which n=0, 1 or 2. The cyclisation may be effected in the presence of an organic or inorganic base or thermally at a temperature in the range 40.degree.-160.degree. C.Compounds of formula II and certain analogues thereof are disclosed as cardiovascular agents.