Abstract: Provided is a gene for efficiently expressing hyaluronic acid hydrolase. A nucleotide sequence of the gene is represented by SEQ ID NO: 4. By truncating a segment of a signal peptide sequence at the N-terminus of a full-length hyaluronic acid hydrolase gene, the Pichia pastoris engineering strain of high level expression genetic engineering hyaluronic acid hydrolase is constructed. The enzyme activity of the hyaluronic acid hydrolase in a fermentation broth obtained by high-density fermentation using the constructed Pichia pastoris engineering strain is up to 4.7×105 U/mL.

Abstract: A light adjustable lamp, related to the lighting facilities has a power module supplying power to a driving unit which is controlled by a Pulse Width Modulation signal. The driving unit supplies power to the lamp; the power module supplies power to the touch signal converter and the microprocessor control unit; the touch signal converter receives the sensing signal of on, off or level from the sense key on the touch sensing keyboard, and converts the sensing signal to the corresponding control level signal to the microprocessor control unit; the microprocessor control unit analyses the control level signal from the touch signal converter and transmits the corresponding Pulse Width Modulation signal to control the driving unit to cut off the power to the lamp or supply power to the lamp with active current in provided level.