Abstract: This invention discloses a method for comprehensively apportioning the source contribution to fine particular matter (PM2.5) based on the receptor model and the chemical transport model, which comprises the receptor model calculation steps, chemical transport model calculation steps and comprehensive source apportionment steps; the said comprehensive source apportionment step comprises the following sub-steps: according to the principle of inverse proportionality between uncertainty and weight coefficient, the first (receptor model) uncertainty and the second (chemical transport model) uncertainty are normalized to obtain their respective weight coefficients; the comprehensive source apportionment results are calculated based on the apportionment results of the receptor model and the chemical transport model, and their respective weight coefficient.

Abstract: A treatment agent for an electronic-grade low-dielectric fiberglass cloth, and a preparation method thereof are provided. The treatment agent for an electronic-grade low-dielectric fiberglass cloth is prepared from the following raw materials in weight percentages: a coupling agent A: 0.6% to 1.2%, a coupling agent B: 0.3% to 0.8%, a coupling agent additive: 0.01% to 1.5%, an alcohol: 0.1% to 0.5%, an acid: 0.1% to 0.5%, and water: the balance, where the coupling agent A is a vinyl-containing coupling agent; the coupling agent B is a vinylbenzyl-containing coupling agent; and the coupling agent additive is a salt of a maleic anhydride (MA)-grafted copolymer. On the basis of meeting the low dielectric performance, the treatment agent of the present disclosure improves the binding performance of the low-dielectric fiberglass cloth to a low-dielectric customer resin and enhances the mechanical performance and heat resistance of the low-dielectric fiberglass cloth.

Abstract: Provided is a gene for trypsin-like serine protease, a protein encoded thereby and use thereof. The nucleotide sequence of the gene for trypsin-like serine protease is set forth in SEQ ID No. 1, the amino acid sequence of the protein encoded by the gene for trypsin-like serine protease is set forth in SEQ ID No. 2. The protein encoded by the gene provided by the present disclosure is capable of inhibiting P. aeruginosa, A. hydrophila, V. parahaemolyticus and V. harveyi.

Abstract: Provided is a gene for trypsin-like serine protease, a protein encoded thereby and use thereof. The nucleotide sequence of the gene for trypsin-like serine protease is set forth in SEQ ID No. 1, the amino acid sequence of the protein encoded by the gene for trypsin-like serine protease is set forth in SEQ ID No. 2. The protein encoded by the gene provided by the present disclosure is capable of inhibiting P. aeruginosa, A. hydrophila, V. parahaemolyticus and V. harveyi.