Abstract: The present invention provides an antimicrobial peptide ID13 (with a sequence set forth in SEQ ID NO. 1), a preparation method and use thereof. The antimicrobial peptide ID3 is successfully expressed in Pichia pastoris using genetic engineering technology. The antimicrobial peptide ID13 of the present invention has an excellent bactericidal activity against Gram-positive bacteria such as Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus suis, and has a low hemolytic activity against mouse red blood cells and a low murine macrophage cytotoxicity.

Abstract: Provided is a use of usnic acid or a salt of usnic acid or a formulation thereof in the preparation of anti-avian coccidiosis drugs or feed additives. Also provided are anti-avian coccidiosis drugs and feed additives comprising usnic acid or a salt of usnic acid or a formulation thereof. Both the use of usnic acid or a salt of usnic acid or a formulation thereof in the preparation of anti-avian coccidiosis drugs or feed additives and anti-avian coccidiosis drugs and feed additives comprising usnic acid or a salt of usnic acid or a formulation thereof provide a new way for treating and preventing avian coccidiosis. The addition of Usnea or usnic acid or a salt of usnic acid or a formulation thereof to feedstuff may realize effective anti-avian coccidiosis.

Abstract: The present invention provides an antimicrobial peptide ID13 (with a sequence set forth in SEQ ID No. 1), a preparation method and use thereof. The antimicrobial peptide ID3 is successfully expressed in Pichia pastoris using genetic engineering technology. The antimicrobial peptide ID13 of the present invention has an excellent bactericidal activity against Gram-positive bacteria such as Staphylococcus aureus, Streptococcus pneumoniae, and Streptococcus suis, and has a low hemolytic activity against mouse red blood cells and a low murine macrophage cytotoxicity.

Abstract: A systematic distributed storage system (DSS) comprising: a plurality of storage nodes, wherein each storage node configures to store a plurality of sub blocks of a data file and a plurality of coded blocks, a set of repair pairs for each of the storage nodes, wherein the system is configured to use the respective repair pair of storage nodes to repair a lost or damaged sub block or coded block on a given storage node. Also a distributed storage system DSS comprising h non-empty nodes, and data stored non homogenously across the non-empty nodes according to the storing codes (n,k). Further a method for determining linear erasure codes with local repairability comprising: selecting two or more coding parameters including r and ?; determining if an optimal [n, k, d] code having all-symbol (r, ?)-locality (“(r, ?)a”) exists for the selected r, ?; and if the optimal (r, ?)a code exists performing a local repairable code using the optimal (r, ?)a code.