Abstract: A POSS modified polyacrylate fluorine-free waterproofing agent includes following components: 1-10 wt % of a functionalized POSS monomer, 2-20 wt % of methyl methacrylate, 3-26 wt % of butyl acrylate, 1-10 wt % of a long-chain acrylate monomer, 0.5-3.5 wt % of an initiator, 0.5-4 wt % of a reactive cationic emulsifier, and 50-80 wt % of deionized water. A method of preparing a POSS modified polyacrylate fluorine-free waterproofing agent is also disclosed.

Abstract: A method of preparing a hydroxytyrosol sturgeon skin gelatin film with antioxidant activity and Salmonella detection ability includes: (1) mixing a neutral red indicator solution and distilled water at room temperature to obtain a mixture solution, and adding 1 mol/L NaHCO3 solution to the mixture solution until discoloration to obtain an alkaline solution; (2) adding an amount of the alkaline solution obtained in step (1) to a mixture of Sturgeon skin gelatin and distilled water to obtain an alkaline gelatin solution; (3) adding hydroxytyrosol and glycerin and propylene glycol to the alkaline gelatin solution to obtain a hydroxytyrosol gelatin solution, and heating the hydroxytyrosol gelatin solution at 40-70° C.; (4) ultrasonicating the hydroxytyrosol gelatin solution from step (3), placing the hydroxytyrol gelatin solution evenly on a clean plexiglass plate, drying the hydroxytyrol gelatin solution on an ultra-clean worktable to obtain the hydroxytyrosol sturgeon skin gelatin film.

Abstract: The present disclosure discloses a real-time fluorescence quantitative polymerase chain reaction (PCR) detection method and kit based on a metal ruthenium complex. The present disclosure is capable of establishing the detection method for performing a real-time fluorescence quantitative PCR by using the metal ruthenium complex as fluorescence dye.

Abstract: A salt-tolerant polymer microsphere plugging agent and a preparation method thereof, the agent being made of white oil, fumed silica, acrylamide monomer, acrylic acid, sorbitan fatty acid ester, N,N?-methylene bisacrylamide, ammonium persulfate, sodium bisulfite, hydrophilic surfactant and water. The present general inventive concept synthesizes salt-tolerant polymer microspheres with ultra-low interfacial tension by adopting inverse phase emulsion polymerization. The prepared polymer microsphere plugging agent is a new type of polymer microspheres with ultra-low interfacial tension, such that the tension can reach 4.3×10?3 mN/m, and the salt tolerance can reach 50000 mg/L salinity, which improves the problem of low interfacial tension and poor salt tolerance in existing polymer microspheres.

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: The invention relates to a V-Ni2P/g-C3N4 photocatalyst, a preparation method, and application thereof. The V-Ni2P/g-C3N4 photocatalyst is a composite material of V-Ni2P and g-C3N4, wherein V-Ni2P has the spherical structure formed by nanosheets; the mass ratio of the V-Ni2P and g-C3N4 is (0.01 to 0.2):1.

Abstract: Disclosed a preparation method of a green, biodegradable, and multifunctional collagen-based nanocomposite film, and overcomes the problems of difficult biodegradation, poor barrier property, and single function of food packaging materials in the existing technologies. The present invention includes the following steps: adding silicate nanosheet into deionized water for ultrasonic dispersion; then adding polyphenolic acid into the mixture, wherein a mass ratio of the polyphenolic acid to the silicate nanosheet is 1:(0.2˜1); and adjusting the pH value to 3.0˜4.0 to obtain a solution A; adding collagen with a concentration of 5 g/L into an acetic acid solution, and fully dissolving the collagen to obtain a solution B; isovolumetrically mixing the solution A with the solution B, stirring at room temperature, and adjusting the pH value to 4.5˜5.5 to obtain a casting solution; and pouring the casting solution into a polytetrafluoroethylene mold, and naturally drying to obtain a nanocomposite film.

Abstract: A preparation method of a tetragonal NaV2O5.H2O nanosheet-like powder includes steps of: (Step 1) simultaneously adding NaVO3 and Na2S.9H2O into deionized water, and then magnetically stirring, and obtaining a black turbid solution; (Step 2) sealing after putting the black turbid solution into an inner lining of a reaction kettle, fixing the sealed inner lining in an outer lining of the reaction kettle, placing the reaction kettle into a homogeneous reactor, and then performing a hydrothermal reaction; and (Step 3) after completing the hydrothermal reaction, naturally cooling the reaction kettle to the room temperature, and then alternately cleaning through water and alcohol, and then collecting a product, drying the product, and finally obtaining the tetragonal NaV2O5.H2O nanosheet-like powder with a thickness in a range of 30-60 nm and a single crystal structure grown along a (002) crystal orientation.

Abstract: A compound with anti-drug resistant bacteria activity having the following formula (I): is disclosed. A method of preparing the compound of formula (I) is also disclosed.

Abstract: A method for increasing bulkiness of reconstituted tobacco by adding tobacco stem particles includes (1) pulverizing a first portion of tobacco stems to obtain tobacco stem particles; (2) classifying the tobacco stem particles with mesh sieves and selecting the tobacco stem particles with a predetermined mesh size; (3) extracting a second portion of the tobacco stems with water and grinding to form a tobacco stem slurry that has a beating degree of 12-14° SR, and mixing the tobacco stem slurry with tobacco leaves in a weight ratio of 6:4 and grinding to obtaining a tobacco slurry that has a beating degree of 18-20° SR; (4) cutting plant fiber pulp boards and dispersing in water to form a plant fiber pulp; (5) preparing a filler solution that contains 10 wt % of a mineral filler; (6) mixing, rolling and drying to obtain the reconstituted tobacco.

Abstract: A method for simultaneous determination of nitrogen and oxygen isotope compositions of natural nitrate and nitrite, which quantitatively converts natural nitrate and nitrite into an organic ester and a nitro-compounds respectively, and then nitrate and nitrite ?18O and ?15N are simultaneously determined by adopting a gas chromatography/pyrolysis/gas chromatography/isotope ratio mass spectrometry coupling technology (GC/Py/GC/IRMS). According to the method for simultaneously determining the nitrogen and oxygen isotope compositions of the natural nitrate salt and nitrite salt, the small amount of sample does not result in the loss, acquisition, exchange and fractionation of nitrogen and oxygen.

Abstract: A compound with anti-drug resistant bacteria activity having the following formula (I): is disclosed. The methods of preparing the compound of formula (I) are also disclosed.

Abstract: The present disclosure provides an STM32-based automatic control system for a broadcast transmitter, including an STM32 microcontroller, a host computer, a drive unit, a touch screen unit, a local network server unit, an image acquisition unit and a sampling unit, wherein the STM32 microcontroller is connected to the host computer. An output interface of the STM32 microcontroller is connected to the drive unit, wherein the touch screen unit is configured to display acquired information that is processed, and receive a control instruction of a touch operation. The local network server unit is configured to achieve remote network display of transmitter information and remote network control, the image acquisition unit is configured to timely acquire an image in a cabinet of the transmitter such that a maintainer can conduct remote observation, and the sampling unit is configured to control the drive unit to achieve automatic control of the transmitter.

Abstract: An apparatus and a method for preparing a multi-directional continuous fiber-reinforced composite material. The apparatus includes an electrostatic fiber-splitting device configured to controllably split a fiber bundle, a powder spreading device configured to spread a powder, and a pre-press molding device configured to cut the fiber and compact the powder. The electrostatic fiber-splitting device includes a rotatable fiber-splitting table. The pressing plate is controlled by an electromagnet, and the pressing plate is energized to generate a high-voltage electrostatic field to disperse the continuous fiber bundle into monofilament fibers.

Abstract: A compound with anti-drug resistant bacteria activity having the following formula (I): is disclosed. The methods of preparing the compound of formula (I) are also disclosed.

Abstract: A skin audible watch for orientation identification includes a dial (1) and a strap (2). A plurality of sound collection modules (3) are arranged along a circumference of the dial (1), and the sound collection modules (3) are sequentially connected with a digital filter (4), an analog-to-digital converter (5), a single-chip microcomputer (6), and a row and column drive module (7); the single-chip microcomputer (6) is also connected with vibration motors (8) and a gyroscope (9); a number of the vibration motors corresponds to a number of orientations; the digital filter (4), analog-to-digital converter, single-chip microcomputer, row and column drive module, the vibration motors and the gyroscope are located inside the dial; the row and column drive module is connected with a current contact pin (12), and a free end of the current contact pin extends out of a surface of the vibration motors.

Abstract: A compound with anti-drug resistant bacteria activity having the formula (I): (I) is disclosed. The methods of preparing the compound of formula (I) are also disclosed.

Abstract: A compound with anti-drug resistant bacteria activity having the following formula (I): is disclosed. The methods of preparing the compound of formula (I) are also disclosed.

Abstract: A method for preparing a conductive biomimetic skin scaffold material with self-repairing function includes the following steps: adding 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride to a homogeneous dispersion of acidified carbon nanotubes, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), and gelatin to cross-link to obtain a conductive composite colloid; and injecting the conductive composite colloid into a mold, aging at ?4-4° C. for 12-24 hours, and then soaking in a phosphate-buffered saline (PBS) solution with a pH of 7.0-7.4 for 12-24 hours to obtain the conductive biomimetic skin scaffold material.

Abstract: A compound with anti-drug resistant bacteria activity having the following formula (I): is disclosed. The methods of preparing the compound of formula (I) are also disclosed.