Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: The present disclosure relates to a system for over-expressing a target protein. The system for over-expressing the target protein includes a dihydrofolate reductase (DHFR)-deficient CHO cell, an antifolate analog, a target protein expression plasmid and a CRISPRi expression plasmid. The target protein expression plasmid includes a target protein expression cassette and a DHFR expression cassette. The CRISPRi expression plasmid includes a gRNA cassette and a dCas9 expression cassette. The present disclosure also relates to a method for over-expressing the target protein. The method for over-expressing the target protein includes constructing the target protein expression plasmid, constructing the CRISPRi expression plasmid, establishing a first stable cell line, establishing a second stable cell line and performing a gene amplification.

Abstract: The present disclosure relates to a gene expression regulation system of a Synechococcus elongatus PCC 7942. The gene expression regulation system of the S. elongatus PCC 7942 includes a S. elongatus PCC 7942 cell, a gene expression interference unit and a gene editing unit. The present disclosure also relates to a method for regulating a gene expression of the S. elongatus PCC 7942. The method includes providing the S. elongatus PCC 7942 cell, using the gene editing unit to insert an exogenous gene into the S. elongates PCC 7942 cell, and using the gene expression interference unit to inhibit an expression of a target gene.

Abstract: The present invention relates to a light emitting diode (LED) driving system and a circuit thereof. The LED driving circuit is configured to control a direct voltage converter configured to generate a regulated output voltage to an input terminal of an LED array. The LED array has a plurality of LED sets. The LED driving circuit includes a plurality of current sources, a comparison circuit and a current setup circuit. The plurality of current sources are connected to a plurality of output terminals of the LED array, and are configured to provide a current flowing through the plurality of LED sets. The comparison circuit is connected to a plurality of output terminals of the LED array, and is configured to generate an analog or digital feedback signal representing a status of the supply voltage for the LED array. The current setup circuit is configured to set up the initial current value of the current sources.