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The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

The invention relates to the field of solid-state batteries, in particular to a halide electrolyte, a preparation method and a solid-state battery. The halide electrolyte comprises a tin element, and the chemical formula of the halide electrolyte is Li2Zr < 1-x > Sn < x > Cl < 6-4x > O < 2x >, and x is less than or equal to 0.3. Through tin-oxygen co-doping, force is exerted at the same time from the two aspects of crystal structure (bulk phase) and interface chemistry, the key problems of ionic conductivity, electrochemical stability, interface compatibility and the like are cooperatively solved, the cost and the process are perfectly considered, and an all-solid-state battery electrolyte solution with a great commercialization prospect is provided.

This invention discloses a sealing glass with good wettability to titanium alloys, comprising the following components in weight percentage (wt.%): 30-50 wt.% SiO2, 1-5 wt.% Al2O3, 10-30 wt.% B2O3, 10-20 wt.% TiO2, 5-9 wt.% CaO, 1-5 wt.% SrO, 0.1-0.5 wt.% BaO, 2-8 wt.% ZrO2, 1-2 wt.% La2O3, 0-1 wt.% CeO2, and 0.1-0.5 wt.% CoO. This invention also provides a method for preparing sealing glass, comprising the following steps: weighing raw materials according to a mass percentage of a glass composition, mixing them evenly, heating and melting them into a glass melt; after the glass melt is uniform, pouring the molten glass melt into deionized water for rapid cooling and quenching, then drying to obtain glass melt fragments; then ball milling the dried glass fragments into glass powder, drying and sieving to ensure the glass powder particle size is less than 100 micrometers, thus obtaining the desired sealing glass material powder. This invention has a linear thermal expansion coefficient of (50-70)×10⁻⁶ in the range of 20-300 °C. ‑7 / ℃; glass softening temperature is 610-660℃; advantages include chemical stability of level IV or above.

This invention discloses a method for preparing and detecting a fluorescent probe for detecting changes in mitochondrial viscosity in organisms, belonging to the field of chemical analysis and detection technology. Triphenylbromoethylene and a five-membered heteroaromatic compound containing aldehyde and boric acid groups are dissolved and reacted with a catalyst; isopropanol is removed by cooling and vacuum evaporation, followed by water extraction, solvent removal, and column chromatography to obtain ND-SF-1; ND-SF-1 is mixed with 4-pyridineacetonitrile, anhydrous ethanol is added, piperidine is added dropwise, the mixture is heated, cooled, and refluxed, then cooled to room temperature, and the precipitated solid is washed to obtain ND-SF-2; ND-SF-2, 3-bromopropyltrimethylammonium bromide, and potassium iodide are mixed and added with acetonitrile, heated, and then cooled to room temperature, and the precipitated solid is collected and washed to obtain ND-SF-3; ND-SF-3 and potassium hexafluorophosphate are mixed and added with acetonitrile, heated, and then cooled to room temperature, and the solid is collected and washed to obtain the fluorescent probe. The fluorescent probe provided by this invention is simple to prepare, low in cost, highly sensitive, selective, and biocompatible; it can sensitively detect changes in mitochondrial viscosity in organisms.

The application belongs to mass spectrometry technology, and specifically provides a novel electrospray ionization device and method. The ionization device comprises a power supply and an electrode. The electrode has a tip, and a sample solution is suitable to be attached to the tip. A voltage V applied to the electrode satisfies: k is a coefficient, α is an angle of the tip, ε0 is a vacuum dielectric constant, η is a viscosity of the sample solution, γ is a surface tension of the sample solution, d is a distance between an electrical access point on the electrode and the tip, and Q is a volume of the sample solution. The application has the advantages of no need for pretreatment and the like, and can be applied to on-site mass spectrometry detection.

The invention relates to the technical field of synthesis of antibody-coupled drug linkers, in particular to a synthesis method of MC-Val-Cit-PAB. The synthesis method comprises the following steps: carrying out amide condensation reaction on L-citrulline and M1 to form M2; carrying out amide condensation reaction on L-valine and M3 to form M4; and carrying out amide condensation reaction on M2 and M4 to form M5. The synthesis method improves the problems of low product purity, high initial raw material cost, low reaction conversion rate and the like in the existing synthesis method.

The application discloses a preparation method of three-dimensional hollow carbon spheres. The three-dimensional hollow carbon spheres are prepared by one-step pyrolysis method through the three-dimensional network structure of melamine foam and the compounding of MOFs materials. The method is simple in process, environment-friendly, low in cost and capable of industrial production. The three-dimensional hollow carbon spheres prepared by the method have uniform and good micro-morphology, the carbon spheres are hollow in the inside, each carbon sphere has four branches connected with other carbon spheres, and multiple carbon spheres are connected to form a three-dimensional network structure.

The application discloses application of a naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition, in particular, application of a 2-(imino)-naphthalene nitrile derivative in preparation of an antitumor pharmaceutical composition. The 2-(imino)-naphthalene nitrile derivative provided by the application has a significant inhibiting effect on colon cancer, liver cancer, lung cancer, prostate cancer, cervical cancer, neuroglioma and breast cancer, exhibits excellent antitumor characteristics, can be used as a leading drug molecule for resisting tumors, and has a good development and application prospect in development of antitumor drugs.

This invention relates to the field of biotechnology, specifically disclosing a microalgal starch rich in resistant starch and its preparation method. Microalgae are cultured under nitrate-nitrogen or nitrogen-deficient (-N) conditions, with pure air or air containing CO2 introduced, and bicarbonate, glycolate, and glycerol supplemented as carbon sources, under continuous light conditions, allowing the microalgal cells to grow and accumulate resistant starch. The yield and content of the resistant starch prepared by this invention are significantly improved compared to uncontrolled conditions. The resistant starch yield is increased by 49–169% compared to uncontrolled conditions; the resistant starch production is increased by 49–278% compared to uncontrolled conditions; and the percentage of resistant starch in total starch (%TS) is increased by 32–134% compared to uncontrolled conditions.

The present application relates to a kind of transfer method of metal electrode, the method includes: depositing metal electrode on polydimethylsiloxane film, metal electrode on polydimethylsiloxane film is adhered and is attached to target substrate using flexible adhesive layer, remove flexible adhesive layer, metal electrode transfer can be completed.Just because the surface energy of polydimethylsiloxane film is low, and adhesion is weak, therefore metal electrode can be completely adhered by flexible adhesive layer, and will not remain on polydimethylsiloxane film, ensure the integrity of metal electrode transfer, improve yield, and because polydimethylsiloxane material is low in price, therefore reduce transfer cost, so as to realize while giving consideration to high yield and low transfer cost.

The present application relates to green flower vegetable fresh-keeping paper and preparation method and application, including paper-like carrier, and further including powder-like Pickering emulsion freeze-dried sprayed on the carrier, components of the Pickering emulsion freeze-dried include 1-MCP, mustard essential oil, emulsifier and stabilizer.The green flower vegetable fresh-keeping paper has the effects of antibacterial, green protection, insecticidal and antioxidant on green flower vegetable, can realize long-acting fresh-keeping of green flower vegetable during storage, is suitable for large-scale popularization and application, is convenient for packaging and storage of large quantities of postharvest green flower vegetable, and raw materials are widely sourced, low in price, suitable for large-scale production and use, and the related raw materials are non-toxic and harmless to human body and environment, safe and reliable.

The application discloses a nickel-based flux-cored wire for LNG storage tanks and a preparation method and application thereof, and belongs to the technical field of welding material flux-cored wires, and solves the problem that the mechanical properties and toughness of a weld after welding of an existing welding wire used for welding 9Ni steel plates are not matched with the 9Ni steel, thereby leading to low service life of the storage tank. The nickel-based flux-cored wire comprises a core and a cladding layer cladded outside the core; the cladding layer comprises, in percentage by mass, C: 0.015%, Cr: 14.5%-20.0%, S: 0.04%, P: 0.04%, and the balance of Ni and inevitable impurities; and the core comprises, in percentage by mass, Co: 0.5%-2.5%, Cr: 13.0%-18.0%, Si: 0.15%, Al: 0.01%-0.03%, Mn: 0.001%-0.02%, Mo: 15%-17%, W: 10%-20%, Fe: 10%-15%, and the balance of Ni and inevitable impurities.

The application relates to the technical field of charging, in particular to a detection device and a charging device. The detection device comprises a voltage suppression circuit and a reference source circuit. A first end of the voltage suppression circuit is used for coupling a control guide line of a charging device. When the voltage input at the first end of the voltage suppression circuit is greater than a preset voltage, a second end of the voltage suppression circuit outputs a first voltage; when the voltage input at the first end is less than or equal to the preset voltage, the second end outputs a second voltage. A first end of the reference source circuit is coupled to the second end of the voltage suppression circuit. When the second end of the voltage suppression circuit outputs the first voltage, a second end of the reference source circuit outputs a first indication signal. When the second end of the voltage suppression circuit outputs the second voltage, the second end of the reference source circuit outputs a second indication signal. The first indication signal is used for representing that the control guide line is not connected to a diode, and the second indication signal is used for representing that the control guide line is connected to the diode. The response speed and the accuracy of diode detection are improved.

The utility model relates to a solar cell. The solar cell includes: a substrate; the grid lines are fixedly arranged on the substrate; and a plurality of attachment blocks, the plurality of attachment blocks are fixedly arranged on two sides of the grid line in a staggered manner along the length direction of the grid line, and the plurality of attachment blocks are fixedly arranged on the substrate. The adhesion blocks arranged on the two sides of the grid line of the solar cell in a staggered manner can enhance the fixing strength of the grid line on the substrate, so that the grid line is not easy to fall off from the substrate, the conductivity of the grid line is improved, and the photoelectric conversion efficiency of the solar cell is improved.

The utility model relates to an arc-angle drill bit, which comprises a supporting seat, an arc-angle drill bit and an arc-angle drill bit, the multiple arc angle drill bits are arranged on the circumference and are all fixed to the supporting base, and cutting edge parts of the arc angle drill bits are arranged to be in a wave shape; and the multiple discharging holes are formed in the end face of the supporting base. According to the drill bit, the arc-angle drill bit is arranged, and the arc cutting edge of the arc-angle drill bit can disperse cutting stress and reduce the risk of edge tip cracking during drilling, so that the service life of the drill bit can be prolonged, the number of times of drill bit replacement can be reduced, burrs and microcracks on the edge of a drilled hole can be reduced, and the hole wall roughness can be reduced. The supporting seat and the arc-angle drill bit are made of steel, so that the impact resistance is high during drilling, tipping is not easy to occur under intermittent cutting, the price is lower than that of a sintered drill bit, and the practicability is improved.

The utility model relates to the technical field of composite board provides a composite board convenient to splice, including composite structure, the one side of composite structure all pastes has dismantled structure, the dismantled structure includes splicing block, first recess, second recess, third recess and lug, one end of splicing block all is fixed in one end of composite structure, the inside of splicing block is provided with first recess. The utility model has dismantled structure through setting, adjusts the position of splicing block, respectively with the inside of splicing block of another piece of composite board of inserting lug, make the outer wall of second recess and third recess of two pieces of composite board abut, insert the connecting block into the inside of two pieces of composite third recess, have the function of reinforcing the plate material, with special tool through the inside of second recess push the connecting block to the outside of third recess, let first recess and lug separate again, realized the device has the function convenient to splice and convenient to dismantle, improved the convenience of this composite board.

The invention discloses a method for preparing phenyl acetate with high selectivity. A phosphoric acid solution is added into a magnesium chloride solution, stirring and heating are performed to obtain a suspension, the suspension is dried to constant weight to obtain a white solid, the white solid is ground to obtain powder, and the powder is calcined to obtain the catalyst. Then mixing phenol and a catalyst, placing the mixture in an oil bath for reflux reaction, dropwise adding acetic anhydride, distilling after the reaction is finished, and collecting a fraction at 190-195 DEG C, namely phenyl acetate. According to the magnesium chloride loaded phosphoric acid type catalyst (MgCl2-H3PO4) prepared by the method disclosed by the invention, phenol and acetic anhydride react without a solvent, MgCl2-H3PO4 is a solid catalyst, can be recycled only by filtering and can be repeatedly used after being washed, and MgCl2-H3PO4 also improves the selectivity of phenyl acetate and reduces the production cost.

This application relates to the field of electrocatalytic carbon dioxide reduction and discloses a method for preparing a nickel hollow fiber membrane, comprising the following steps: S1, preparation of casting solution; S2, spinning and film formation: the casting solution is extruded into a tap water bath at a certain speed through spinning extrusion molding, while water is injected into the hollow fiber at a constant speed with gas, causing a phase change between the extruded fiber and water, and then the extruded fiber is soaked in tap water overnight; S3, sintering: oxygen or air is first introduced into a tube furnace for oxidation, and then reduction is carried out under a hydrogen atmosphere to obtain a complete metal hollow fiber membrane. By applying pure nickel hollow fiber to the field of electrocatalytic carbon dioxide reduction, compared with other gas diffusion electrodes, nickel hollow fiber, as a self-supporting gas diffusion electrode, does not require the use of binders such as Nafion solution, and compared with precious metals such as gold, silver, and copper, which are excellent for carbon dioxide reduction, nickel is inexpensive and suitable for large-scale use.

The application discloses monodisperse lignin colloidal spheres and a preparation method and application thereof. The preparation method comprises the following steps: S1. lignin is dissolved in a mixed solution of glacial acetic acid and acetylation reagent, and stirring and heating are carried out to obtain a reaction solution containing acetylated lignin; the mass ratio of the lignin to the acetylation reagent is 1:2.2-3.3; S2. the reaction solution containing the acetylated lignin obtained in the step S1 is subjected to removal of excessive acetylation reagent and solvent to obtain acetylated lignin; S3. the acetylated lignin obtained in the step S2 is dissolved in an organic solvent-water mixed solvent, water is added dropwise, and centrifugal treatment is carried out to obtain monodisperse lignin colloidal spheres. The preparation process is simple, the yield of the acetylated lignin product reaches more than 90%, and the monodisperse (PDI<0.1) lignin colloidal spheres with adjustable size can be prepared; when the average particle size of the monodisperse lignin colloidal spheres is regulated to be below 350 nm, the photonic lignin colloidal spheres which can be used as structural color materials can be prepared.

The invention provides a preparation method of fluorodinitrile. The preparation method comprises the following steps: reacting trifluoromethanesulfonic anhydride with fluoroalkyl alcohol to obtain fluoroalkyl substituted trifluoromethanesulfonate; then, the fluoroalkyl substituted trifluoromethanesulfonate reacts with malononitrile, and fluorodinitrile is obtained; the reaction raw materials used in the method are easy to obtain and low in price, the target product conversion rate is high, byproducts are few, the purity of the prepared fluorodinitrile is as high as 99%, the yield is higher than 84%, the content of chloride and bromide ions is lower than 5 ppm, and the fluorodinitrile can meet the requirement of serving as an electrolyte additive.

This invention discloses an organocobalt salt for improving the tensile strength of rubber and its preparation method, belonging to the field of rubber technology. The organocobalt salt for improving the tensile strength of rubber comprises, by mass parts, 140-210 parts of organosilicon vegetable fatty acid, 20-30 parts of solvent, 20-30 parts of cobalt hydroxide, and 10-16 parts of propionic acid. The organosilicon vegetable fatty acid is obtained by reacting rosin with organosilicon maleimide. The organosilicon maleimide is obtained by reacting maleic anhydride with a silicon-containing long-chain fatty amine. The silicon-containing long-chain fatty amine is obtained by reacting methyldiethoxysilane with an unsaturated long-chain fatty amine. The organocobalt salt obtained by this invention has a good effect on promoting the adhesion between metal and rubber while effectively improving the tensile strength of rubber.

The invention relates to an autoclaved aerated concrete block based on an all-solid waste material and a preparation method thereof, and relates to the technical field of building material processing. Comprising the following components in parts by weight: 25-30 parts of an all-solid waste cementing material, 60-70 parts of construction waste micro powder, 0.05-0.1 part of aluminum powder, 0.02-0.06 part of a foam stabilizer and 60-70 parts of water, the all-solid waste cementing material is prepared from slag, fly ash, steel slag, desulfurized gypsum and red mud according to a mass ratio of (40-60): (20-35): (10-20): (5-15): (5-10); the construction waste micro powder is prepared from recycled concrete micro powder and brick powder according to a mass ratio of (60-70): (30-40). The dry density and compressive strength of the product prepared by the method can stably reach B07 and A5.0 grade standards, and the cost is lower.

The application discloses a tension type impressed current cathodic protection system, which comprises a composite cable made of a steel core aluminum stranded wire with an outer sheath, a first insulation connecting structure arranged at the upper end of the composite cable and used for insulatingly connecting the composite cable with a member to be protected, a cable branch structure arranged at the upper end of the composite cable and used for electrically connecting the composite cable with a power control cabinet, an auxiliary anode arranged on the composite cable and used for releasing current, and a second insulation connecting structure arranged at the lower end of the composite cable and used for insulatingly connecting the composite cable with a gravity foundation. The tension type impressed current cathodic protection system disclosed by the application has the advantages of light weight and low price compared with the existing composite cable copper as a power line under the same current carrying requirement, and the production processing technology of the steel core aluminum stranded wire is simplified as the steel core aluminum stranded wire only needs to be coated with a wear-resistant sheath.

The application provides a preparation method of high-quality magnesium oxide and belongs to the technical field of magnesium metal oxide synthesis. The application uses magnesium hydroxide waste produced in an ethyl maltol process as raw material, and obtains magnesium oxide through sodium hypochlorite oxidation, twice water washing and calcination. The obtained magnesium oxide has high purity and high activity. The process flow of the application is short, the calcination temperature is low, the side reaction is less, the subsequent equipment investment is less, the price of sodium hypochlorite is relatively low, the cost is saved, new impurities are not introduced, and the application has good industrial application value.

The invention relates to the technical field of preparation of lead-free metal halide scintillator crystal powder, and particularly discloses chlorine zirconium cesium crystal powder for a composite scintillator and a confinement growth method of the chlorine zirconium cesium crystal powder. The cesium zirconium chloride crystal powder is cesium zirconium chloride-gas phase oxide composite powder formed on the micro-nano scale by means of in-situ crystallization, and the cesium zirconium chloride crystal powder is composed of 50-95.3 wt% of cesium zirconium chloride and 4.7-50 wt% of gas phase oxide. The preparation method comprises the following steps: preparing zirconium chloride-gas phase oxide powder, preparing a cesium chloride solution, mixing zirconium chloride-gas phase oxide slurry, and growing chlorine zirconium cesium crystal powder in an in-situ crystallization confinement range. The cesium zirconium chloride crystal powder prepared by the method has the advantages of adjustable particle size, stable suspension and efficient scintillation luminescence performance, solves the problem of crystal powder-polymer phase separation in a composite scintillator, and can be used for large-scale preparation of the composite scintillator in the field of radiation detection.

The application discloses a method for treating antibiotic wastewater by using a graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate, and the method is characterized by using the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst to activate persulfate for degrading and treating antibiotic wastewater, wherein the graphdiyne / ferrous indium sulfide nanocomposite comprises ferrous indium sulfide nanoparticles, and the nanoparticles are loaded with graphdiyne nanosheets. The method for treating antibiotic wastewater by using the graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate uses the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst, wherein the nanocomposite has many reactive sites, high catalytic activity and good stability, can efficiently activate persulfate with a smaller amount of catalyst, can efficiently remove antibiotics in wastewater, and has the advantages of low cost, high treatment efficiency, good removal effect, green environmental protection and the like, and therefore, the method has important significance for effectively purifying antibiotic wastewater, has high use value and good application prospect.

The application relates to the field of color-changing lenses, and discloses an electrochromic composite film device for lenses. The electrochromic composite film device comprises a first functional film, a first water-oxygen barrier film, an EC film, a second water-oxygen barrier film and a second functional film in sequence. The electrochromic composite film device can realize the function of a traditional curved resin lens, and the price of electrochromic glasses can be greatly reduced without the expensive curved resin lens.

The utility model discloses a detachable buckle lifting packaging box connecting mechanism, and relates to the technical field of packaging box connecting mechanisms, the detachable buckle lifting packaging box connecting mechanism comprises a base, and an arch bridge rod is arranged on the base; the knuckle is fixedly arranged on the upper wall of the base; a sleeve hole is formed in the upper wall of the end part of the lifting belt in a penetrating manner; the base is designed to be of a triangular structure. According to the detachable buckle lifting packaging box connecting mechanism, the knuckle and the arch bridge are combined into a whole, and the structure and the principle of a traditional waistband are used for reference, so that the assembling process of the packaging box becomes extremely simple and convenient. And the original two-time assembly step can be completed only through one-time operation, so that the packaging efficiency is greatly improved, the packaging time is shortened, and the quick packaging device is particularly suitable for the quick packaging requirement in large-scale production.

The application discloses a composite pyrophosphate magnesium battery positive electrode material and a preparation method and application thereof. The positive electrode material comprises a magnesium ion positive electrode material pyrophosphate and a carbon layer coated on the magnesium ion positive electrode material pyrophosphate. The chemical formula of the positive electrode material is Mg a Na b M 2+x / 2 N y , wherein M is one or more of Fe, V, Ti, Cr, Ni, Cu, Mn, Co, Nb, N is one or more of P2O7 4‑ , PO4 3‑ , SO4 2‑ , BO3 3‑ , SiO4 4‑ , 0