Abstract:
The present invention discloses a method for labeling specific cells within living cells or tissues. The method comprises preparing the vectors with genes of photoactivable fluorescent proteins, followed by injecting the vectors containing genes of photoactivable fluorescent proteins together with genes of other fluorescent proteins into living cells or tissues, resulting in biological tissues with traceable systemic expression and irradiating the predetermined areas in living cells or tissues with an activating light source, thereby enhancing the intensity and duration of the emitted fluorescent after other excitations, thus revealing the targets intended for observation out of the background, so that a target-oriented image tracing is achieved.
Abstract:
An over current protection circuit provides over current protection (O.C.P) and short current protection (S.C.P) and can selectively operate in auto recover mode or latch off mode by replacing certain elements therein. Hence, the present invention can be designed easily and is cheaper than the prior art.
Abstract:
The present invention relates to an optical medium judging method for avoiding the collision of an objective lens with a disk or the failure to judge a warped disk when the optical disk drive judging the disk. This method will move the objective lens so as to obtain the data of the laser beam reflection amount of the focusing beam on the plastic layer of the optical disk. By using the reflection amount, the driving circuit will output a rising direct current voltage of a voltage difference to drive an actuator so as to move the objective lens to a proper position capable of judging the disk without colliding with the disk.