Abstract: A method for synthesis and purification of radiolabeled macroaggregated human serum albumin (MAA) to form a bulk solution injectable to a patient includes: providing a radiometal in a generator, the radiometal being a generator eluate; synthesizing the radiolabeled MAA in a reactor with MAA particles from a commercially available labeling kit for 99mTc and the generator eluate so as to provide synthesized radiolabeled MAA particles; passing the synthesized radiolabeled MAA particles on a syringe filter membrane having a membrane composition, diameter, and pore size for trapping the radiolabeled MAA particles as trapped radiolabeled MAA particles and not retaining impurities from a bulk solution, the impurities including free radioactive metal isotopes, parent radioactive metal breakthrough, and stannous chloride present in the MAA labeling kit for 99mTc; and untrapping the trapped radiolabeled MAA particles from the syringe filter using a saline or buffered solution passing through the syringe filter.

Abstract: A coupling device (1) between a source of mechanical energy (2) and a generator of electrical energy (3) comprises an arbor (4) driven by said source of mechanical energy, a cylindrical element (5) fixedly and coaxially mounted on the arbor, a tube (6) surmounting said cylindrical element arranged to rotate freely about said arbor and drive said generator. A helical spring (7) is friction-fitted on the cylindrical element and on the tube by its first turns (8) and last turns (9) respectively. A space (10) is provided between said tube and cylindrical element and the central turns (11) of the spring (7).

Abstract: A control device for an electronic wrist-watch including a delay means and a pair of flip-flop circuits. The device is actuated by a push button switch and provides one of two possible output conditions dependent upon the length of time for which the push button is depressed.

Abstract: A circuit for electronic watches to enable selection between a 12 hour clock display and a 24 hour clock display. The circuit is driven by the hours counter of a watch and includes a control input for selecting the mode of operation and a logic network having outputs for controlling the display of the tens of hours and, for a 12 hour clock system, for controlling an AM or PM display.

Abstract: A control device for an electronic wrist watch to enable selection of a variety of possible displays. The circuit of the device incorporates means for memorizing an input control signal derived from a pushbutton and logic and delay means for combining the input control signal and the information in the memory means to provide outputs according to the period for which the pushbutton is actuated. The outputs can be used to selectively connect counters to the display means of the watch.

Abstract: A control and correction circuit for an electronic watch involving three push-buttons which are actuable to select and/or correct the information displayed by the watch. The push-buttons provide actuating signals to a delay device and to logic selection circuits which provide outputs to control the counters of the watch circuit. The delay device enables a secondary display to be displayed for a predetermined time after which the device returns to its initial state. During the predetermined time the information displayed may be corrected by actuation of the second or third push-button in which case the secondary display is held unitl the correction operation is complete before returning to its initial condition.