CONTINUOUS PROCESS FOR MICROSPHERES PRODUCTION BY USING EXPANDED FLUIDS
    7.
    发明公开
    CONTINUOUS PROCESS FOR MICROSPHERES PRODUCTION BY USING EXPANDED FLUIDS 审中-公开
    连续工艺生产微型BALLS深受广大液体的

    公开(公告)号:EP2185131A2

    公开(公告)日:2010-05-19

    申请号:EP08790080.9

    申请日:2008-07-25

    IPC分类号: A61K9/16 A61K31/00

    摘要: The invention concerns a process for the continuous treatment of an emulsion and/or a micro-emulsion assisted by an 'expanded liquid' for the production of micro- and/or nano-particles or micro- and/or nano- spheres containing one or more active ingredients. In particular, a liquid solvent expanded by compressed or supercritical CO2 is contacted with an O/W emulsion, or alternatively a W/O emulsion or multiple emulsions, formed by an external phase that is itself a liquid expanded by compressed CO2. The expanded liquid forms a solution with the dispersed phase of the emulsion and extracts it inducing the formation of the desired particles of the dissolved compounds. The process is carried out in a counter-current packed column wherein the expanded emulsion is fed from the top, while the expanded liquid is fed from the bottom. Thanks to the presence of the expanded liquid, any deposition of the solid particles produced on the packing elements is avoided, thus preventing any column blockage. A suspension of micro-structured particles of the desired product can be collected continuously at the bottom of the column.

    METHOD AND DEVICE FOR CONTROLLING THE OPERATION OP POWER SOURCES AT THE POINT OF MAXIMUM POWER
    8.
    发明公开
    METHOD AND DEVICE FOR CONTROLLING THE OPERATION OP POWER SOURCES AT THE POINT OF MAXIMUM POWER 审中-公开
    方法和一种用于控制,电源的操作,最大功率点

    公开(公告)号:EP2033062A2

    公开(公告)日:2009-03-11

    申请号:EP07790138.7

    申请日:2007-06-07

    IPC分类号: G05F1/67

    摘要: Provided herein are a control method and a control device for controlling a supply unit, which enable supply of the maximum power that can be delivered by a power source, said method being characterized by the presence of an absolute maximum on1 the curve of the power as a function of the voltage at the connection terminals; the supply system set betwee'n the power source and the load is preferably a DC/DC switching converter. The control circuit identifies the optimal operating point, using the relation existing between the harmonic components of the power and the harmonic components of the voltage at the terminals of the source. Starting from any value of the voltage at the connection terminals, the control circuit increments the value of the voltage if, for a given value of the frequency, the power and the vo'ltage at the connection terminals are in phase, whilst it decrements the value of the voltage if the power and the voltage are in phase opposition. The control circuit can be obtained employing discrete analog devices and integrated analog devices of a widely used type.