Abstract: An LED package structure includes an insulation substrate, a heat-sink slug, an LED chip assembly, four diodes, and a lead-frame assembly. The heat-sink slug is inserted on the insulation substrate, and includes a loading surface exposed externally, where the LED chip assembly is fixed on the loading surface. The lead-frame assembly includes two externally-extended lead frames and four loading lead frames which are apart from one another, and which are all inserted on the insulation substrate. The four diodes are correspondingly loaded on, and electrically connected with, the four loading lead frames. The LED chip assembly and the four diodes constitute a bridge circuit, wherein the bridge circuit has its positive electrode and negative electrode located at the two externally-extended lead frames, respectively. Therefore, there is no need for the LED package structure to connect externally a rectifier diode module so as to achieve the purpose of convenient use.

Abstract: An expression system for producing a multi-enzyme complex, the system including a nucleic acid molecule containing a promoter operatively linked to a nucleotide sequence including multiple genes encoding multiple enzymes that are components of the multi-enzyme complex.

Abstract: An LED package structure includes a base, an LED chip, a frame, and a microstructure lens. The LED chip is arranged on the base. The microstructure lens is arranged on the LED chip, and is a first-order optical lens being subject to surface optical microstructure treatment. The frame is provided for securing the microstructure lens on the base. The microstructure lens of the LED package structure can concentrate the light emitted from the LED chip or vary light patterns of the light emitted from the LED chip so as to achieve the purpose of increasing brightness and luminous angles.

Abstract: Disclosed are a novel flavor compound-producing yeast strain and methods of using the strain to produce flavor compounds.

Abstract: The present invention provides a phosphor composition for AC LEDs, which is represented by the following formula (I): M1?x?ySi2O2?wN2+2w/3:Eux,Ry??(I) wherein, M, R, x, y, and w are defined the same as the specification. In addition, the present invention also provides an AC LED manufactured with the same.

Abstract: A polycistronic expression cassette encoding proteins necessary for constructing a multi-enzyme complex was developed. Also disclosed herein is a host cell containing this polycistronic expression cassette and uses thereof in degrading biomass.