19results about How to "Simple components" patented technology

This invention belongs to the field of metal rust prevention technology, specifically relating to an environmentally friendly water-based rust-preventive composition, its preparation method, and its application. The composition comprises, by weight, 3-8 parts of a first triazine compound, 1-5 parts of a second triazine compound, 10-20 parts of 2-amino-2-methyl-1,3-propanediol, 2-5 parts of dipropylene glycol monomethyl ether, and 65-85 parts of water. The first triazine compound is a triazine compound having substituents containing hydrophobic segments and at least two aminocarboxylic acid substituents, and the second triazine compound is a triazine compound having thiol substituents. This invention forms a dual-anchored protective film on the metal surface through the two triazine compounds, exhibiting excellent salt spray resistance, damp heat resistance, and film density. It achieves a salt spray test duration of 72 hours, a damp heat test duration of 960 hours, and an adhesion rating of 0. Furthermore, it is free of nitrites, phosphates, and heavy metals. The preparation method is simple, suitable for industrial production, and can be widely applied to metal rust prevention in machinery manufacturing, automotive parts, and other fields.

The application provides a boar semen cryopreservation agent and an application method; the boar semen cryopreservation agent comprises alpha-amylase, and the content of the alpha-amylase is 10-1000 mu g / L. The application method of the cryopreservation agent is as follows: centrifuging the boar semen after collection and pretreatment, removing supernatant after centrifugation; adding a refrigerant, re-suspending the sperm, and then placing the sperm in a 4 DEG C refrigerator and standing for 3-4 hours; adding a freezing liquid and fully mixing; filling the semen into a thin tube at 4 DEG C, uniformly laying the thin tubes in a freezing rack, and then precooling on a liquid nitrogen surface and then placing in liquid nitrogen for freezing. The application has the advantages that: the overall components of the cryopreservation agent are simple, the cost is low, and the overall cost performance is high; due to the addition of alpha-amylase in the cryopreservation agent, the storage quality of the boar frozen semen can be significantly improved; and the activity, acrosome integrity, DNA integrity, mitochondrial activity and other physical and chemical properties of the boar frozen semen are effectively improved.

The application discloses a cement aerogel material with micro-expansion and shrinkage inhibition and a preparation method thereof. The cement aerogel material is prepared by mixing, foaming, pore forming and drying of a first component, cement and a second component. The first component comprises a hydrogel polymer, an expansion component, water and a dispersing agent. The second component comprises a foaming agent. The weight ratio of the hydrogel polymer, the expansion component, water and the cement is 0.08-0.3:0.04-0.3:8-15:1. By introducing the expansion component with a proper proportion, the expansion component expands, the intermediate-state skeleton strength is improved, and the shrinkage is resisted. The expansion volume is not less than the shrinkage volume in the drying process, the drying shrinkage is effectively offset, the overall structure integrity is maintained, and finally an additional active reinforcement effect is generated.

The utility model relates to the technical field of smoke-blocking vertical walls, in particular to an automatic smoke-blocking vertical wall which comprises a smoke-blocking vertical wall body, a traction mechanism, a triggering mechanism and a sensing device. The ceiling screen main body is arranged below a bare ceiling or on a decorative ceiling; the traction mechanism is connected with the smoke screen main body and is used for adjusting the lifting of the smoke screen main body; the traction mechanism is connected with the triggering mechanism; the sensing device is detachably connected with the triggering mechanism; when the induction device is triggered, the triggering mechanism can be triggered to drive the traction mechanism to move, and lifting of the ceiling screen body is adjusted. The induction device is a liquid glass bulb or a device containing easily-melted metal. According to the automatic smoke-blocking vertical wall, after the induction device induces high-temperature gas or smoke dust and is triggered, the triggering mechanism drives the traction mechanism to move so as to control and adjust the lifting of the smoke-blocking vertical wall main body, and the induction device does not need to be networked or provide a signal for use, and can automatically react and independently work.

The invention relates to the technical field of traditional Chinese medicine and health food, in particular to a composition for assisting in improving memory, application and a preparation. The composition for assisting in improving the memory comprises the following components in parts by weight: 2-9 parts of ginseng, 2-9 parts of ligusticum wallichii, 3-10 parts of gastrodia elata and 0.2-0.8 part of a ginkgo leaf extract. The preparation method of the composition comprises the following steps: adding water into gastrodia elata for extraction, filtering to obtain medicine residues and an extracting solution, concentrating the extracting solution, adding ethanol for fractional precipitation, and merging precipitates to obtain gastrodia elata polysaccharide; adding the medicine residue, ginseng and ligusticum wallichii into ethanol, extracting, filtering, concentrating under reduced pressure, and drying to obtain extract powder; and finally, mixing the gastrodia elata polysaccharide, the extract powder and the ginkgo leaf extract. Exploration is carried out on extraction methods of all the components, and efficacy experiments prove that the finally prepared composition has a remarkable memory improving effect.

The invention discloses a method for synthesizing tetracyclododecene (TCD) with high selectivity and low byproduct, which comprises the following steps of: pyrolyzing dicyclopentadiene (DCPD) serving as an initial raw material to generate cyclopentadiene (CPD), and reacting with norbornene (NB) in a system to generate TCD. According to the method, the feeding molar ratio of NB to DCPD is controlled to be 1: (0.237-2.138), preferably 3: 1, the reaction is carried out at the temperature of 160-280 DEG C and under the pressure of 3.0-8.0 MPa, CPD auto-agglutination and side reactions of CPD, DCPD, TCD and the like can be effectively inhibited, and the reaction selectivity is remarkably improved. The method is simple in process, the content of by-products in the obtained crude product is low, the components are relatively simple, the solvent and unreacted monomers can be conveniently recovered through rectification, the TCD product with the purity of 95% or above is finally obtained, and the whole process is easy for large-scale production.

The application discloses a mechanical self-locking type concrete precast pile joint structure and a construction method, which comprises an upper end plate, a lower end plate and a connecting structure composed of an upper sleeve, a lower sleeve, two groups of wedge pieces, two groups of positioning rings and two connecting steel bars; the connecting structure has multiple groups and is arranged between longitudinal steel bars in an upper precast pile and a lower precast pile respectively, and is used for connecting the upper precast pile and the lower precast pile. The longitudinal steel bars in adjacent concrete precast piles are mechanically connected one by one by the sleeve, the connecting steel bar, the positioning ring and the wedge piece; the force transmission of the longitudinal steel bars in the precast piles is direct and reliable; after the piles are connected, the longitudinal steel bars in the upper and lower pile bodies are mechanically self-locked; the longitudinal steel bars after connection cannot be pulled apart; the safe and reliable, convenient construction and low-cost goal of the concrete precast pile joint is achieved; and meanwhile, the construction method can also be used for connecting concrete components such as concrete precast columns and concrete precast shear walls.

The application belongs to the technical field of live cell imaging, and discloses a live cell nucleic acid imaging system, method and use based on CRISPR and nanobody, which comprises: a modified dCas9 protein expression vector containing n ALFA polypeptide tags; a modified sgRNA expression vector comprising a specific guide sequence; and a fluorescent nanobody expression vector containing a bivalent or trivalent fluorescent nanobody coding sequence, which are operatively connected, wherein a fluorescent protein is inserted between nanobody split sites as an internal tag, can be combined with the ALFA polypeptide tag carried by the dCas9 protein and stably emit light, and the free state fluorescent nanobody is self-degraded and does not emit light. The application can visualize single copy nucleic acid sequences with single molecule resolution and high signal-to-noise ratio, especially the imaging marking of single copy nucleic acid sequences in live cells.

The invention provides a treating agent and application of the treating agent as a material for improving the surface wettability of a plating layer, the treating agent comprises methanol and a surfactant, the surfactant comprises 99-105 parts by volume of methanol, 10-15 parts by volume of 1, 2-octylene glycol, 10-15 parts by volume of alkylphenol polyoxyethylene ether and 10-15 parts by volume of fatty alcohol-polyoxyethylene ether, and the treating agent comprises 10-15 parts by volume of 1, 2-octylene glycol, 10-15 parts by volume of alkylphenol polyoxyethylene ether and 10-15 parts by volume of fatty alcohol-polyoxyethylene ether. 0.2 to 1 part of 1, 2-octylene glycol, 0.05 to 1 part of alkylphenol polyoxyethylene ether and 0.05 to 1 part of fatty alcohol-polyoxyethylene ether. The technical problems that after an existing metal surface is electroplated, the wettability of a plating layer surface is reduced, the strength is insufficient when an electroplated workpiece is bonded with other parts, and the falling risk exists are solved. The method can be widely applied to metal coating surface treatment.

The invention relates to a medical ray protection preparation for relieving radiodermatitis, and belongs to the technical field of biomedical skin treatment. The preparation is composed of a preparation A and a preparation B. The preparation A is composed of the following components in percentage by weight: 0.01-0.03% of superoxide dismutase, 0.005-0.05% of trehalose and the balance of ultrapure water. The preparation B is prepared from the following components in percentage by weight: 0.01 to 0.04 percent of chlorogenic acid, 2.5 percent of potassium sorbate, 15 percent of sorbitol, 1 percent of hyaluronic acid, 2.5 percent of carboxymethyl chitosan and the balance of purified water. The superoxide dismutase, the trehalose, the chlorogenic acid and other active ingredients are utilized to relieve radiodermatitis from multiple aspects of removing active oxygen at a wound part, resisting inflammation, inhibiting bacteria and promoting skin barrier repair, and by utilizing the moisturizing and antibacterial effects of carboxymethyl chitosan and the functions of promoting collagen production and tissue repair of hyaluronic acid, the wound healing effect is improved, and the wound healing effect is improved. The radiodermatitis is comprehensively treated.

The application provides a bethyla huidobrensis bisexual attractant, a preparation method and application thereof. The bethyla huidobrensis bisexual attractant comprises methyl eugenol and isoamyl acetate. The attractant significantly improves the attraction effect on male and female bethyla huidobrensis, reduces the use amount of methyl eugenol, has the advantages of low cost and simple preparation, and is suitable for industrialized production of the bethyla huidobrensis killing agent.

This invention relates to an iron polyphenol nanocapsule, its preparation method, and its applications. The nanocapsule is prepared from raw materials containing ferric salts, ferric ions, and gossypol via a microfluidic chip. The iron polyphenol nanocapsule containing gossypol-ferric ions-ferric ions prepared by this invention using a microfluidic chip as a reactor exhibits uniform size and good stability. It can achieve co-delivery of dual chemotherapy drugs, T1 magnetic resonance imaging, and trimodal combined therapy of tumors (chemodynamic therapy / dual-channel chemotherapy / immunotherapy), showing potential applications in cancer diagnosis and treatment.

This invention provides a highly conductive copper paste that cures in an air atmosphere, its preparation method, and its applications, belonging to the field of conductive paste preparation technology. The highly conductive copper paste comprises: 60-80% conductive copper powder; 3-10% polymer resin; 1-3% curing agent; 3-10% first solvent; 1-5% additives; and 7.5-17% particle-free conductive copper ink. The copper salt precursor in the particle-free conductive copper ink is dissolved in the form of copper ions in a mixture of its complexing agent and second solvent. When the highly conductive copper paste is heated and cured in an air atmosphere, the copper ions in the particle-free conductive copper ink are reduced in situ to nano-copper particles, which form welded connections between the conductive copper powder particles, constituting a conductive network composed of micron-sized conductive copper powder and in-situ generated nano-copper weld points. The highly conductive copper paste of this invention has low manufacturing cost, high conductivity, and the potential for room temperature dormancy and heat-triggered decomposition.

The invention provides a composition with hypoglycemic activity and a preparation method and application thereof, and belongs to the technical field of biological medicine. According to the composition disclosed by the invention, cinnamon, turmeric and red ginseng which are homologous in medicine and food are used as core raw materials and are compounded with eggshell membrane extract; after scientific components in parts by weight, all the raw materials achieve synergistic interaction, the inhibition rate on alpha-glucosidase can be remarkably increased, hyperglycemia model rat tests prove that the composition can remarkably reduce the blood sugar concentration, zebra fish tests prove that the composition can remarkably reduce the insulin content and the glucose level, the blood sugar reducing effect is remarkable, and the composition is suitable for clinical application. The traditional Chinese medicine composition can be effectively applied to blood sugar reduction and diabetes treatment. The composition is simple in component, clear in composition, high in raw material safety and free of toxic and side effects, the risk of liver injury possibly caused by combination of multiple traditional Chinese medicines is effectively avoided, and the medication safety and patient compliance are greatly improved.

This invention discloses a method for measuring gravity gradient based on an elastic beam. The steps include: constructing two identical measurement units, each unit comprising an angle measuring instrument, an elastic beam, and a mass block. The mass block is positioned at the tail end of the elastic beam, and the fiber optic loop of the angle measuring instrument is positioned on the mass block. The mass of the elastic beam is much smaller than the mass of the mass block. When measuring the diagonal component Γ in the i-direction of the gravity gradient... ii During measurement, the first ends of the two elastic beams are fixedly connected to a base, and the elastic beams in the two measuring units are placed parallel and symmetrically along the i-direction; the distance between the two mass blocks and the axis of symmetry is h; then the diagonal component Γ is calculated using the formula. ii When performing the off-diagonal component Γ in the gravity gradient ji During measurement, the elastic beams in the two measurement units are placed end to end along the j direction.

The invention discloses a plastic packaging material for food and a preparation method of the plastic packaging material. On one hand, the invention provides the plastic packaging material for the food, and the plastic packaging material is prepared from the following raw material components in parts by mass: 60 parts of HDPE (High-Density Polyethylene) resin, 40 to 50 parts of EVOH (Ethylene Vinyl Alcohol) resin, 24 to 32 parts of non-isocyanate polyurethane prepolymer and 6 to 10 parts of cinnamyl aldehyde grafted nano titanium dioxide; the non-isocyanate polyurethane prepolymer is prepared from the following raw material components in parts by mass: 60 to 68 parts of methyl 1, 6-hexamethylene dicarbamate, 6 to 8 parts of bio-based polyol, 10 to 16 parts of eugenol, 1 to 3 parts of ferric oxide and 2 to 4 parts of zinc acetate. On the other hand, the invention provides a preparation method of the plastic packaging material for food. The packaging material disclosed by the invention is excellent in high and low temperature resistance, excellent in solvent resistance and moisture resistance, excellent in oxygen barrier property, free of harmful substance precipitation and relatively excellent in antibacterial property.

The invention relates to the technical field of agricultural biological prevention and treatment, in particular to a bactericidal composition for preventing and treating asparagus stem blight and a preparation method thereof. The composition is prepared from the following components in parts by mass: 1 to 20 parts of fluopyram, 1 to 20 parts of phenazino-1-carboxylic acid, 0.1 to 1 part of an organic silicon surfactant, 5 to 30 parts of an auxiliary agent and 29 to 92.9 parts of water. The fluopyram and the phenazino-1-carboxylic acid are compounded according to a specific proportion, and the action mechanisms of the fluopyram and the phenazino-1-carboxylic acid are complementary, so that the control effect on the asparagus stem blight is remarkably improved; meanwhile, the introduced organosilicon surfactant can reduce the surface tension of the liquid medicine, enhance the adhesion and spreading capability on the thick wax layer of asparagus and improve the utilization rate of effective components; through compounding of the biological-source phenazino-1-carboxylic acid and the chemical agent fluopyram, the problem of drug resistance enhancement caused by long-term use of a single chemical agent can be avoided, and the drug use frequency and dosage are reduced; and the introduction of biological source components reduces the risk of environmental residue, and gives consideration to both prevention and treatment effects and ecological safety.

The invention discloses a preparation method of an environment-friendly photovoltaic graphite boat cleaning agent and a cleaning method, and belongs to the technical field of industrial cleaning. The invention comprises the following components: sulfuric acid, an oxidizing agent, an accelerating agent, a stabilizing agent and water, the oxidizing agent comprises one or two of peroxide and persulfide; the accelerator comprises a fluorine-containing compound which is ionized to form fluorine ions in an aqueous solution environment; the stabilizer comprises at least one of a polyhydroxy compound, amino acid, an alcohol amine compound and a specific chelate. Nitric acid and hydrochloric acid are not used, the cleaning quality and efficiency are both considered, no yellow smoke or other phenomena exist in the cleaning process, the working environment is effectively improved, and harm to personnel, equipment and the environment is reduced; the cleaning agent is simple in component, suitable for large-scale mass production and excellent in cleaning effect, the cleaning agent can be reasonably controlled by monitoring specific components in the cleaning agent, and extra environment protection and wastewater treatment cost is avoided.

The application discloses a detection reagent and a detection method for fermentation power and acid production capacity of Daqu, and relates to the technical field of analysis and detection. The detection reagent comprises a sugar composition and an acid. The sugar composition is composed of glucose, maltose and sucrose, and the mass ratio of the glucose, the maltose and the sucrose is (4-18):(1-5):(0.1-1). The acid is at least one selected from acetic acid and lactic acid. The detection reagent of the application comprises glucose, maltose, sucrose and acid, and the acid is at least one selected from acetic acid and lactic acid. The application simplifies the components of the detection reagent, has the advantages of safe components, controllable safety, strong applicability and wide coverage, and makes the evaluation of the fermentation power and the acid production capacity of Daqu more accurate and efficient.