Abstract: The present invention provides a “living” radical polymerization method for a vinyl monomer by near-infrared photothermal conversion. The method comprises irradiating a reactor with near-infrared light of 750-850 nm, wherein the reactor has a first chamber and a second chamber that are isolated from each other, the first chamber contains an organic solution of a near-infrared light responsive croconaine dye, and the second chamber is provided with a closed reaction flask containing a reaction solution, the reaction solution comprises a vinyl monomer, two or more of an ATRP initiator, an ATRP ligand, an ATRP catalyst, an RAFT reagent, a thermal initiator, and an additive, and an organic solvent; and the near-infrared light responsive dye converts the near-infrared light into heat energy, by which the reactor is heated to 50-100° C. to polymerize the monomer in the reaction solution, to obtain polymers with controlled molecular weights and molecular weight distributions.

Abstract: The present disclosure relates to the field of medical instruments, disclosing an endoscope master-slave motion control method. The endoscope includes an operating arm, a main body disposed at an end of the operating arm, a first imaging unit, a second imaging unit, and an end instrument protruding from a distal end of the main body.

Abstract: The present disclosure relates to the field of medical instruments, disclosing an endoscope control method. The method comprises: controlling a motion of an endoscope, the endoscope comprising a main body, a first imaging unit, a second imaging unit and an end instrument protruding from a distal end of the main body; obtaining a first image from the first imaging unit; obtaining a second image from the second imaging unit, wherein the first and the second images have different fields of view and include images of the end instrument; based on the first and second images, generating a composite scene image to remove an actual image of the end instrument; and generating a virtual image of the end instrument in the composite scene image.

Abstract: An identity certificate may be issued to a blockchain node. The issuance may include issuing a first identity certificate to a first terminal and receiving a second identity certificate issuance request that is from the first terminal. A second identity certificate may be issued to the first terminal, and a third identity certificate issuance request is received from the second terminal. A third identity certificate is issued to the second terminal, so that the second terminal forwards the third identity certificate to the third terminal.

Abstract: An auxiliary shaping device for cervical vaginal penetration plasty and a use method thereof. The auxiliary shaping device includes a uterine cavity support, a cervical canal support and a vaginal support which are made of elastic material. The uterine cavity support is a hollow bowl-shaped structure; the uterine cavity support includes a first end and a second end; the first end has a larger diameter than the second end; the first end includes a plurality of valve bodies evenly distributed in circumferential direction; a concave part is arranged between two adjacent valve bodies, the concave part has an opening shape; uterine cavity secretions enter an interior of the uterine cavity support through the concave part; one end of cervical canal support is connected with the second end, other end is connected with vaginal support; a passage is arranged in the uterine cavity support; cervical canal support and vaginal support.

Abstract: The present invention discloses an auxiliary shaping device for a cervical vaginal penetration plasty and a use method thereof. The auxiliary shaping device comprises a uterine cavity support, a cervical canal support and a vaginal support which arc made of elastic material. The uterine cavity support is a hollow bowl-shaped structure, and one end with a large caliber has a plurality of valve bodies evenly; a concave part is arranged between two adjacent valve bodies, and the concave part has an opening shape; uterine cavity secretions enter the interior of uterine cavity support through concave part; one end of cervical canal support is connected with one end of uterine cavity support with a small caliber into a whole, and other end is connected with vaginal support into a whole; and a passage is arranged in the uterine cavity support, cervical canal support and vaginal support.

Abstract: The present invention discloses a bidirectional guide suture device for pelvic floor reconstruction puncture, comprising a puncture catheter and a bidirectional guide cable. One end of the bidirectional guide cable is provided with a needle hole for connecting stitches, and the other end is provided with a pulling hole for pulling the bidirectional guide cable. The bidirectional guide cable is arranged inside the puncture catheter, and the pulling hole is located at the puncture end of the puncture catheter. The bidirectional guide suture device in the present invention is convenient and flexible in operation, can reduce puncture injury, and is especially used in pelvic floor reconstruction suture in human bodies.

Abstract: Disclosed is an aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and an environmental-friendly surface treating agent therefor, wherein after the surface treatment of the aluminium-zinc hot-plated steel plate using an environmental-friendly surface treating agent consisting of the components of a matrix resin compounded from a particular solvent-free aqueous aliphatic polyurethane dispersion and aqueous polyurethane-acrylic acid copolymer, an organic silicon compound, a matrix resin curing agent, a water-soluble metal salt compound and a high-density polyethylene lubrication auxiliary etc., the formed surface-treated aluminium-zinc hot-plated steel plate has comprehensive properties of excellent weather resistance, corrosion resistance and alkali resistance, and good machine formability etc.

Abstract: The invention relates to an inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate, a single-face electrogalvanized, chromium-free surface treated steel plate used for fuel tanks and a process of making the same.

Abstract: Disclosed is an aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and an environmental-friendly surface treating agent therefor, wherein after the surface treatment of the aluminium-zinc hot-plated steel plate using an environmental-friendly surface treating agent consisting of the components of a matrix resin compounded from a particular solvent-free aqueous aliphatic polyurethane dispersion and aqueous polyurethane-acrylic acid copolymer, an organic silicon compound, a matrix resin curing agent, a water-soluble metal salt compound and a high-density polyethylene lubrication auxiliary etc., the formed surface-treated aluminium-zinc hot-plated steel plate has comprehensive properties of excellent weather resistance, corrosion resistance and alkali resistance, and good machine formability etc.

Abstract: The invention relates to an inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate, a single-face electrogalvanized, chromium-free surface treated steel plate used for fuel tanks and a process of making the same.