Abstract: A glue dispenser dispensing switch includes a switching device main body, a needle holding base, a wear-resistant plate, and a rotating device. The switching device main body is equipped with a double liquid inlet, the needle holding base is equipped with a mixed glue outlet, the wear-resistant plate is installed between the switching device main body and the needle holding base, and the wear-resistant plate is equipped with a wear-resistant plate opening. The rotating device is utilized to rotate the needle holding base or the wear-resistant plate. A mixed double-liquid glue passes through the double liquid inlet, the wear-resistant plate opening and the glue outlet to dispense a mixed glue while the double liquid inlet, the wear-resistant plate opening and the glue outlet are overlapped. In addition, a double liquid dispensing equipment is also disclosed herein.

Abstract: A method for immobilizing glycoprotein is disclosed. A surface is provided. Next, a boronic acid is contacted to the surface. The boronic acid is represented as Y—R—B—(OH)2 and includes a boronic acid group (B—(OH)2), a linker R, and a functional group Y, in which the boronic acid is bonded to the surface via the functional group Y. A glycoprotein is contacted to the boronic acid, wherein two spatially adjacent hydroxyl groups of a carbohydrate chain form a boronate ester with the boronic acid group of the boronic acid to immobilize the glycoprotein. The goal of site-specific and covalent protein immobilization without interfering the binding affinity of an antibody to antigen may be thus achieved with the reaction of boronic acid and the carbohydrate chain of Fc region.

Abstract: A method for immobilizing glycoprotein is disclosed. A surface is provided. Next, a boronic acid is contacted to the surface. The boronic acid is represented as Y—R—B—(OH)2 and includes a boronic acid group(B—(OH)2), a linker R, and a functional group Y, in which the boronic acid is bonded to the surface via the functional group Y. A glycoprotein is contacted to the boronic acid, wherein two spatially adjacent hydroxyl groups of a carbohydrate chain form a boronate ester with the boronic acid group of the boronic acid to immobilize the glycoprotein. The goal of site-specific and covalent protein immobilization without interfering the binding affinity of an antibody to antigen may be thus achieved with the reaction of boronic acid and the carbohydrate chain of Fc region.

Abstract: This invention relates to a torque ratchet wrench that comprises a wrench body with a handle at one end and a wrench head at the other end, a driving head would be used for connecting with work pieces, a control device being installed inside the wrench head for using to activate the driving head to run with turning of the wrench in one direction and to void the driving head to run with turning of the wrench in the other direction, a mark plate being implemented on the wrench body with notched torque scales, and an indicator being fixed on the wrench head at one end and extending to above the mark plate at the other end. When the wrench body is driving the driving head rotating, the torque value applied on the wrench driving the work piece can be measured from reading the pointing of the indicator to the notched torque scale on the mark plate.

Abstract: An improved structure of a ratchet wrench characterized in that the ratchet wrench is provided with an adaptation hole to accommodate a ratchet wheel having a plurality of mounting teeth surrounding the external circumferential edge, one lateral side of the adaptation hole is provided with an adaptation recess to accommodate a stopping teeth, a directional block, two resisting element and two elastic bodies, and two resisting edges are provided at an appropriate position on the adaptation recess, and a notch is formed on the stopping teeth which is protruded out with a pivotal rod, the directional block is pivotally mounted to the pivotal rod, and one side of the stopping teeth is provided with a plurality of engaging teeth which is engageable with the engaging teeth of the ratchet wheel, the side face of the stopping teeth is restricted by a left and a right resisting element, and the top end of the two resisting element is formed into a bottom end which is restricted at the stopping face of the stopping tee

Abstract: A ratchet wrench structure includes a wrench body defining a receiving hole receiving a ratchet wheel and a receiving recess receiving a locking pawl, a resting block, and two elastic members. The locking pawl has a first side formed with locking teeth engaging the engaging teeth of the ratchet wheel, and a second side formed with an arcuate inner face. The resting block has a first end rested on the arcuate resting face of the receiving recess, and a second end formed with a resting end rested on the arcuate inner face of the locking pawl. The two elastic members received in two sides of the resting block, wherein one elastic member is rested on the arcuate resting face of the receiving recess, and the other elastic member is rested on the arcuate inner face of the locking pawl.