Abstract: A method for preparing a modified cellulose aerogel for glycoprotein separation is provided. In this method, cellulose aerogel is employed as a substrate. The cellulose aerogel is known to have a three-dimensional network structure with extremely high porosity and specific surface area and extremely low density. So, by using the cellulose aerogel as a substrate, it is possible to provide the glycoproteins to be separated with more binding sites. PEI dendrimer has abundant functional groups and can easily be modified. By modifying the cellulose aerogel substrate with the PEI dendrimer, it is possible to improve the density of the phenylboronic acid bound to the substrate, thereby leading to higher affinity toward the glycoproteins to be separated.

Abstract: A method for preparing a modified cellulose aerogel for glycoprotein separation is provided. In this method, cellulose aerogel is employed as a substrate. The cellulose aerogel is known to have a three-dimensional network structure with extremely high porosity and specific surface area and extremely low density. So, by using the cellulose aerogel as a substrate, it is possible to provide the glycoproteins to be separated with more binding sites. PEI dendrimer has abundant functional groups and can easily be modified. By modifying the cellulose aerogel substrate with the PEI dendrimer, it is possible to improve the density of the phenylboronic acid bound to the substrate, thereby leading to higher affinity toward the glycoproteins to be separated.

Abstract: An ejecting-clamping-pulling combined seedling fetching device for an automatic transplanter and an operating method therefor. The device comprises: a seedling ejecting mechanism (1), a seedling feeder mechanism (2), a seedling fetching mechanism (3), and a control system. The seedling feeder mechanism (2) is mounted on a stander; the seedling ejecting mechanism (1) is mounted on the seedling feeder mechanism (2) and is located at the rear side of the seedling feeder mechanism (2); the seeding fetching mechanism (3) is mounted at the stander and is located at the front side of the seedling feeder mechanism (2). An upper ejector rod support (1-6) and a lower ejector rod support (1-4) are provided on the seedling ejecting mechanism (1); the seedling ejecting rods on the two supports are disposed in a staggered manner, and the upper ejector rod support (1-6) and the lower ejector rod support (1-4) are configured to alternately eject and loosen seedling trays.

Abstract: An ejecting-clamping-pulling combined seedling fetching device for an automatic transplanter and an operating method therefor. The device comprises: a seedling ejecting mechanism (1), a seedling feeder mechanism (2), a seedling fetching mechanism (3), and a control system. The seedling feeder mechanism (2) is mounted on a stander; the seedling ejecting mechanism (1) is mounted on the seedling feeder mechanism (2) and is located at the rear side of the seedling feeder mechanism (2); the seeding fetching mechanism (3) is mounted at the stander and is located at the front side of the seedling feeder mechanism (2). An upper ejector rod support (1-6) and a lower ejector rod support (1-4) are provided on the seedling ejecting mechanism (1); the seedling ejecting rods on the two supports are disposed in a staggered manner, and the upper ejector rod support (1-6) and the lower ejector rod support (1-4) are configured to alternately eject and loosen seedling trays.

Abstract: A monolithic metallic self-ligating bracket with a locking catch device is provided. The bracket includes a base, at least one tie wing and at least one locking catch device placed on one surface of the base. A slot in the middle of the tie wing extends in a generally mesial-distal direction. One end of a trailing arm connects with the base, and the other end of the trailing arm extends transversely toward the axis to form an arm tip, the inner edge of the trailing arm and arm tip towards the axis, together with the slot form an archwire concave. After the arch wire is inserted to the archwire concave, the locking catch device returns to its original shape, and the arm tip extending into the archwire concave of the locking catch device enclasps the arch wire, making the best use of the therapeutic force of the archwire.

Abstract: A monolithic metallic self-ligating bracket with a locking catch device is provided. The bracket includes a base, at least one tie wing and at least one locking catch device placed on one surface of the base. A slot in the middle of the tie wing extends in a generally mesial-distal direction. One end of a trailing arm connects with the base, and the other end of the trailing arm extends transversely toward the axis to form an arm tip, the inner edge of the trailing arm and arm tip towards the axis, together with the slot form an archwire concave. After the arch wire is inserted to the archwire concave, the locking catch device returns to its original shape, and the arm tip extending into the archwire concave of the locking catch device enclasps the arch wire, making the best use of the therapeutic force of the archwire.