A power factor control system for use with AC induction motors which samples line voltage and current through the motor and decreases power input to the motor proportional to the detected phase displacement between current and voltage to thereby provide less power to the motor, as it is less loaded. A field effect transistor and method of making the same wherein a semi-conductor layer is placed on an insulating substrate, and wherein the gate region is separated from source and drain regions of a like conductivity type to that of the source and drain regions but of reduced conductivity, the gate electrode and gate region of the layer being of generally reduced length, and the gate region being of greatest length on its surface closest to the gate electrode. This is accomplished by initially creating a relatively large gate region of one polarity, and then reversing the polarity of a central portion of this gate region by ion bombardment, thus achieving a narrower final gate region of the stated configuration. METHOD OF POST-PROCESS INTENSIFICATION OF NASA Case No. MFS-23461 Inventor: Barbara Scott Askins Great Britain, Switzerland, West Germany Address inquiries to: Marshall Space Flight Center Corresponding to U.S. Patent No. 4,101,780 Filed 6-8-76 Issued 7-18-78 This invention is directed to a method of post-process photographic film or plates. The intensification process includes the steps of converting the silver of the developed film or plate to a radioactive compound by treatment with an aqueous alkaline solution of an organo-S35 compound; placing the resulting activated film or plate in direct contact with a receiver film which is then exposed by radiation from the activated film; and developing and fixing the intensified image on the receiver film. The aqueous alkaline solution of the organo-S35 compound will react directly with the photographic silver to produce activity levels suitable for autoradiography without the silver first being bleached to silver halide. A preferred organo-S35 compound is thiourea-S35. WIND WHEEL ELECTRIC POWER GENERATOR NASA Case No. MFS-23515-1 Address inquiries to: Marshall Space Flight Center Corresponding to U.S. Patent No. 4,191,505 Filed 2-24-78 Wind wheel electric power generator apparatus including a housing rotatably mounted upon a vertically disposed support column. Primary and auxiliary funnel-type, venturi ducts fixedly mounted upon the housing for capturing wind currents and conducting the same to a bladed wheel. Additional air flows are conducted onto the bladed wheel for effecting rotation of the wheel in a cumulative manner. The auxiliary ducts are disposed at an acute angle with respect to the longitudinal axis of the housing which permits capture of wind currents within a variable directional range. Amplified wind turbine apparatus wherein ambient inlet air is prerotated in a first air rotation chamber having a high pressure profile increasing the turbulence and Reynolds number thereof and a second rotation chamber adjacent and downstream of the turbine has a low pressure core profile whereby flow across the turbine is accelerated and thereafter exits the turbine apparatus through a draft anti-interference device which eleminates interference with ambient winds at the outlet of the turbine apparatus. Pivotable vanes controlled in response to prevailing wind direction admit air to the chambers and aid in imparting rotation. A central core may be utilized for creating the desired pressure profile in the first chamber. |