Abstract: A dual voltage engine starter system having a first battery pack (B) for supplying power to the system and a second battery pack (A) and contactors (SC,PC) for connecting the battery packs in series mode for cold weather starting or in parallel mode for warm weather starting, a pilot relay (SPR) for controlling the standard start solenoid (SOL), and a starter contactor (SMC) that controls the starter motor (SM) circuit to protect the solenoid contacts (SOL1). A control logic system (FIGS. 2a-b) has a single timer (TMR) and a sequencing timer circuit (STC) for controlling the contactors and relay in particular sequences, both for high and low voltage start cycles and for starting and terminating start cycles. A low voltage detector (LVD) controls a start-terminate latch (STL) to abort the start cycle if the start motor (SM) voltage is too low. A frequency sensor (FS) sets the latch (STL) to end the starting cycle when the engine reaches running speed.

Abstract: Prophylactic or therapeutic method for the treatment of venous thrombosis by administering preferably intravenously to a human in need thereof a pharmaceutically acceptable carrier and an in vivo fibrinolytic enzyme in which the catalytic site essential for fibrinolytic activity is blocked by a group, such as an acyl group, removable by hydrolysis at a rate such that the pseudo-first order rate constant for hydrolysis is in the range of 10.sup.-6 sec.sup.-1 to 10.sup.-3 sec.sup.-1 in isotonic aqueous media at pH 7.4 at 37.degree. C.

Abstract: A pharmaceutical composition which comprises a pharmaceutically acceptable carrier together with an in vivo fibrinolytic enzyme as defined herein wherein the catalytic site essential for fibrinolytic activity is blocked by a group which is removable by hydrolysis at a rate such that the pseudo-first order rate constant for hydrolysis is in the range 10.sup.-6 sec.sup.-1 to 10.sup.-3 sec.sup.-1 in isotonic aqueous media at pH 7.4 at 37.degree. C.; is useful in the treatment of venous thrombosis.

Abstract: An enzyme preparation is prepared having terminal non-polar groups incorporated therein so that the enzyme preparation has affinity for a water-immiscible liquid. The enzyme preparation can be separated from an aqueous reaction mixture by contacting the mixture with the water-immiscible liquid, permitting the enzyme preparation to become associated with the water-immiscible liquid and separating the water-immiscible liquid containing the associated enzyme from the reaction mixture.

Abstract: Described is a temperature compensation circuit comprising a transistor, a device (to which compensated voltage is to be applied) connected to the collector, and a plurality of resistors forming a voltage divider. A node separates the resistors into two branches and is connected to the base, and a temperature sensor having a negative temperature coefficient of resistance is located in one of the branches. The branches are mutually adapted so that the ratio of the resistance of the branch containing the sensor to the sum of the resistances of both branches is a linear function of temperature. An application of this circuit to the control of the bias voltage supplied to an avalanche photodiode is specifically described.

Abstract: Described is a method of fabricating front-illuminated silicon photodiodes having high quantum efficiency, a short response time, (high gain and low excess noise in the case of avalanche diodes), low dark currents and good reliability. In the fabrication of an n.sup.+ -p-.pi.-p.sup.+ APD the method includes the steps of: (1) epitaxially growing a high resistivity .pi.-type silicon layer on a high conductivity p-type silicon substrate; (2) forming an n-type guard ring in the .pi.-layer; (3) forming a p-type channel stop around the guard ring; (4) forming in the .pi.-layer a p-layer by ion implantation and by driving in the implanted ions by heating in a suitable atmosphere; (5) masking the p-layer and introducing phosphorus into the backside to getter defects and/or impurities; (6) ramping the furnace temperature during steps (2) through (5) to reduce crystalline defects; (7) forming a thin n.sup.+ -layer in the p-layer; (8) forming an anti-reflection and passivation coating on the n.sup.