Abstract: The provided is a biomineralization material for treating dentin hypersensitivity and promoting epitaxial growth of enamel and a use thereof. The biomineralization material includes following raw materials in parts by weight: 5-72 parts of a film-forming protein or a PEGylated film-forming protein, 4-67 parts of a water-soluble disulfide bond exchanger and 1-21 parts of a pH regulator. The present application proposes for the first time that the disulfide bond exchanger (e.g., cysteine (Cys)) without any toxicity may react with the film-forming protein or PEGylated film-forming protein. When a protein nano-coating with a mineralization regulating function is formed, no large number of macromolecular protein aggregates can be generated to block the dentin pores. The biomineralization material can permeate deeply into the exposed dentin pores, with the depth of 200-500 ?m (the sealing depth of the protein coating reacting with TCEP is only about 40 ?m).

Abstract: A crosslinked protein-based separation membrane and application thereof. The separation membrane is formed by attaching a crosslinked protein nanomembrane to a porous membrane, the crosslinked protein nanomembrane is formed by crosslinking a two-dimensional nanomembrane which is formed by phase transition of a protein with a crosslinking agent, the separation membrane contains a dense surface layer and a support layer, the dense surface layer is the crosslinked protein nanomembrane, and the support layer is the porous membrane; the protein is any one of lysozyme, bovine serum albumin, insulin, and ?-lactalbumin; the crosslinked protein-based separation membrane has a good biocompatibility, may serve as a dialysis membrane for blood purification, and has a higher retention ratio for large molecular proteins.

Abstract: An application of ellagic acid and a metabolic derivative urolithin compound thereof in preparation of an immunomodulatory medicine is provided. Classical animal models of autoimmunity and immunoregulation, such as experimental autoimmune encephalomyelitis, neuromyelitis optica mouse model, ulcerative colitis, and skin transplantation, are used as examples to conduct experiments from various aspects and perspectives, such as neurological function scores, histopathological changes of lesions, inflammatory factor expression, and pro-inflammatory cell numbers.

Abstract: A protein product capable of immobilizing a target and being cleared as required includes a protein (lysozyme, bovine serum albumin (BSA), whey albumin, insulin, ?-lactalbumin, fibrinogen, ribonuclease A, cytochrome c, ?-amylase, horseradish peroxidase (HRP), pepsin, myoglobin, collagen, keratin, or the like), a protein modifier (a strong oxidizing agent or a strong reducing agent), and a matter to be immobilized (a coating, a pesticide, a chemical fertilizer, a cosmetic, a medical drug, or the like). A protein film can be generated through the phase transition of the protein to immobilize the matter to be immobilized on a target surface, thereby improving the utilization rate of the matter to be immobilized and reducing the resource waste and environmental pollution caused by the loss of the matter to be immobilized. In addition, after the protein film is decomposed, the matter to be immobilized will also be effectively cleared.

Abstract: A laminated fluorescent sensor includes a sealable sensor housing and an optical sensing system embedded inside the sealable sensor housing. The optical sensing system includes a light source (7), a short wave pass filter (8), an air chamber (10), a sensing unit, a long wave pass filter set (12) and an optical signal collecting unit from top to bottom all of which are coaxially set. The optical signal collecting unit is connected with a signal processing system (14); the sealable sensor housing has air inlets (2, 201) and an air pumping port (3), the air inlets (2, 201) are communicated with the air chamber (10) through an air intake passage, the air chamber (10) is communicated with the air pumping port (3) through an air pumping passage.

Abstract: A collection apparatus for storing prolate photos belongs to the technical field of cultural relic protection equipment and includes multiple drawable arched drawing-type plates disposed in the cabinet, which enables the prolate photos to be fully flattened without repeated and memory curling. At the same time, a magnetic plating board is embedded in the bottom of every arched drawing-type plate, and a plurality of soft magnetic strips are placed on the surface of every arched drawing-type plate, and the magnetic attraction is formed between the magnetic plating board and the soft magnetic strip for fixing the prolate photos. As a result, the collection apparatus is reasonable in design and convenient to use, and is able to durably and stably protect prolate historical photos.

Abstract: A method for preparing a deacidifying and reinforcing agent for a cellulose acetate film includes steps of: ultrasonically dispersing a nanometer alkaline oxide into an ethyl cellulose n-butanol solution, so as to form a nanometer alkaline oxide suspension, then adding a mixture of E51 EPOXY RESIN and a curing agent thereof; wherein the nanometer alkaline oxide is a nanometer magnesium oxide, a nanometer cerium oxide, a nanometer magnesium hydroxide, a nanometer potassium carbonate, a nanometer calcium hydroxide or a nanometer barium hydroxide. A method for using the deacidifying and reinforcing agent includes steps of: evenly applying the deacidifying and reinforcing agent on a surface of a cellulose acetate film.

Abstract: A high-efficiency supercritical oil extraction method is provided. According to the method, in an early extraction stage, extraction is performed using an extractant along an extraction kettle from top to bottom; in a middle extraction stage, the extraction kettle is longitudinally flipped by 180 degrees, extraction is still performed using an extractant along the extraction kettle from top to bottom; in a later extraction stage, extraction is performed using a conventional extractant along the extraction kettle from bottom to top. Thus, the pressure effect and the critical extraction effect of the critical extractant are simultaneously exerted, thereby greatly improving the extraction efficiency of supercritical oil extraction, shortening the extraction time, and reducing the dosage of extractant, so as to achieve high-efficiency and low-cost oil extraction.

Abstract: A method of stripping films which are stuck together without damage is disclosed. The whole reel of films which are stuck together is placed in a sealing device with outlet valves. Liquid nitrogen is added at a bottom of the sealing device. The films are stripped off by a flow of gas through gaps between the layers of the films while the vaporization of liquid nitrogen. The present invention adopts a natural force of liquid nitrogen vaporization to strip the films, which does not compromise the PH value, the dimensional performance and the mechanical performance of the films. The films are stripped off without damage. The conventional method of stripping the films causes the fragile film to break off or the image layer with a decreased combing power to detach. The present invention has the advantages of simple operation, low cost and good promotion value.

Abstract: The present invention discloses a fluorescent compound having a sensing ability to aniline and o-toluidine, a preparation method thereof, a preparation method and application of a fluorescent sensing film. The compound contains a naphthalenediimide (NDI) unit, two alkynyl aniline conjugate fragments and two long alkyl chain fragments; compared with perylene anhydride (PDI), naphthalenediimide (NDI) has better solubility, rich photophysical property, good photochemical stability and strong ?-? stacking effect; these building units make the prepared fluorescent compound have supramolecular characteristics and more abundant gelling behavior and assembly behavior. Therefore, the sensing film prepared with the fluorescent compound is controllable in the microstructure, good in stability, high in sensitivity, long in service life and able to be repeatedly used.

Abstract: A shape-restoring device and a restoring method for distorted filmstrips are proposed for restoring filmstrips that are distorted due to vinegar syndrome. During the implementation of the method, the air compressor is started such that pressure reaches 0.6-0.9 MPa; three-way valves are regulated so as to introduce pressure into film-clasping cylinders and pressing-plate cylinders via diverter valves; the cylinder spindles of the film-clasping cylinders move the upper collets fixedly connected therewith, for fixing filmstrips; the cylinder spindles of the pressing-plate cylinders move the pressing plate fixedly connected therewith such that the binding underlay on the lower surface of the pressing plate contacts the heating plate; in this way, pressuring, heating and restoring are carried out. Through steps of pressing, heating, fixing filmstrips, shape-restoring and transporting the distorted filmstrips under the pressure of 0.5-0.8 MPa and the temperature of 80-90° C.