Abstract: An acromioclavicular steel plate assembly includes an acromion steel plate and a clavicle steel plate, one end of the clavicle steel plate has a positioning head, the acromion steel plate is an integrated steel component with three perpendicular acromion planes in a U shape, the three acromion planes being a body, a first fixing portion, and a second fixing portion, a notch is arranged on a side surface of the first fixing portion, a first avoidance gap is provided in the body, two convex limiting protrusions and a convex spherical hinge protrusion are arranged on three side surfaces of the positioning head respectively, the positioning head can pass through the first avoidance gap and embed the spherical hinge protrusion into the notch, and a total width of the positioning head at the two limiting protrusions is greater than a width of the first avoidance gap.

Abstract: An acromioclavicular steel plate assembly includes an acromion steel plate and a clavicle steel plate, one end of the clavicle steel plate has a positioning head, the acromion steel plate is an integrated steel component with three perpendicular acromion planes in a U shape, the three acromion planes being a body, a first fixing portion, and a second fixing portion, a notch is arranged on a side surface of the first fixing portion, a first avoidance gap is provided in the body, two convex limiting protrusions and a convex spherical hinge protrusion are arranged on three side surfaces of the positioning head respectively, the positioning head can pass through the first avoidance gap and embed the spherical hinge protrusion into the notch, and a total width of the positioning head at the two limiting protrusions is greater than a width of the first avoidance gap.

Abstract: The present invention provides a PEG-ACS/M-siRNA nanocomposite application, and method for reducing the histamine content during fishmeal storage thereof. A small interfering ribonucleic acid (siRNA) is designed and prepared according to a histidine decarboxylase gene of Morganella morganii (Morganella morganii subsp. morganii KT), and the histidine decarboxylase gene has a sequence of SEQ ID No: 1. A PEG-ACS/M-siRNA nanocomposite is prepared by using a PEGylated arginine-modified chitosan as a carrier. A PEG-ACS/M-siRNA nanocomposite is added to fishmeal in a certain ratio. The method for reducing the histamine content during fishmeal storage has a significant inhibitory effect on the histamine content during fishmeal storage, and can reduce the histamine content in fishmeal by 49%-53%, which has great significance for the control of biogenic amines in fishmeal in the feed industry.

Abstract: The present invention provides a PEG-ACS/M-siRNA nanocomposite application, and method for reducing the histamine content during fishmeal storage thereof. A small interfering ribonucleic acid (siRNA) is designed and prepared according to a histidine decarboxylase gene of Morganella morganii (Morganella morganii subsp. morganii KT), and the histidine decarboxylase gene has a sequence of SEQ ID No: 1. A PEG-ACS/M-siRNA nanocomposite is prepared by using a PEGylated arginine-modified chitosan as a carrier. A PEG-ACS/M-siRNA nanocomposite is added to fishmeal in a certain ratio. The method for reducing the histamine content during fishmeal storage has a significant inhibitory effect on the histamine content during fishmeal storage, and can reduce the histamine content in fishmeal by 49%-53%, which has great significance for the control of biogenic amines in fishmeal in the feed industry.