69results about How to "The processing method is simple and fast" patented technology

The invention relates to a screening method for 43 artificial synthetic pigments in an aquatic product. The method comprises the following steps: screening by virtue of quadrupole tandem time-of-flight mass spectrometry of liquid chromatogram; calling an established mass spectrometry screening database to automatically scan and retrieve in a molecular matching mode; through a C18 analytic column, carrying out gradient elution by taking an acetonitrile solution containing 0.1% of formic acid in a 5mmol/L ammonium acetate aqueous solution as a moving phase, wherein the flow rate is 0.3ml/minute; and detecting under a negative ion mode by using an electrospray ionization source, extracting a suspicious sample, purifying the sample by virtue of a matrix dispersion method, carrying out liquid chromatographic separation, quantitatively determining by virtue of an external standard method, and verifying. The screening method has the advantages that the detection method is simple and quick to operate and high in sensitivity. By adopting the matrix dispersion method to purify the sample, the interference of matrix components is effectively reduced. Misjudgment events such as false positive events are greatly reduced by virtue of the qualitative function of the quadrupole tandem time-of-flight mass spectrometry, so that the monitoring ability of the detection mechanism on the risk of the aquatic product is extremely enhanced.

This invention relates to a method for separating and purifying mixing exhaust gas of chlorine and hydrochloride, comprising: absorb the chlorine in the mixing exhaust gas using solvent A to separate from gas phase hydrochloride, the chlorine can be obtained after solvent A desorption, the hydrochloride can be obtained by removing solvent A in the gas phage hydrochloride using solvent B, wherein: solvent A is one of benzene, silicon tetrachloride, nonyl hydride, sulfur monochloride, carbon tetrachloride and chlorosulfonic acid, and solvent B is one of cyclopentadiene and hexachlorobutadiene. By washing with concentrated hydrochloric acid to remove trace amount of organic compounds, and chemical washing to remove heavy metal elements, the hydrochloride is absorbed by water to make hydrochloric acid. This invention is characterized of efficient separation of chlorine and hydrochloride, high efficiency of separation, low cost, high-usage of resources, high purity of chlorine up to 99%, recycling use, and the purity of hydrochloride meets the requirement of producing industrial hydrochloride and hydrochloride regent .

The invention provides a novel method for synthesizing 4-chloropyrrolo[2,3-d]pyrimidine, belonging to the technical field of chemical synthesis. The method comprises the steps of carrying out four-step reaction by using ethyl cyanoacetate, thiourea, caustic alcohol, 2-chloroacetaldehyde and sodium acetate as raw materials and using alcohol, ammonia water, water and phosphorus oxychloride as solvents as well as using active nickel as a catalyst to obtain the 4-chloropyrrolo[2,3-d]pyrimidine as a target product; and carrying out data representation by liquid chromatogram, nuclear magnetism spectrogram and mass spectrum. The invention has short process route and production cycle, low synthesis cost, safe and reliable synthesis and simple and convenient posttreatment method, and avoids the use of dangerous goods of sodium hydride. The product prepared by the method has high yield (50-58 percent) and high purity (98-99 percent).

The invention discloses ultrathin stone polyurethane and ceramsite composite plates and a machining method thereof. According to the machining method, polyurethane and ceramsite are mixed to manufacture polyurethane and ceramsite plates, the polyurethane and ceramsite plates are adhered to two surfaces of a stone to be machined, the stone with the polyurethane and ceramsite plates on the two surfaces is cut off into two or a plurality of ultrathin stone polyurethane and ceramsite composite plates, and the thicknesses of the ultrathin stones are 3-8mm; one surfaces of the stones of the composite plates are ground and polished; and the polished ultrathin stone polyurethane and ceramsite composite plates can be directly used for decorating required portions of a wall. The machining method is easy to operate, the machined ultrathin stone polyurethane and ceramsite composite plates are light in weight, high in strength and convenient to convey, and are low-carbon and environment-friendly, and limited natural resources are saved.

The invention discloses a solid wood saw cutting composite floor board and a processing technology, relates to a solid wood composite floor board, and specifically relates to a structure and the processing technology of the solid wood saw cutting composite floor board. The solid wood saw cutting composite floor board and the processing technology are characterized in that 2-3 layers of single layer solid wood saw cutting composite boards are adhered by an adhesion agent and compacted to form a solid wood saw cutting composite board serving as a substrate, saw cutting solid wood single boards are edged, and then aligned and tiled, edgings are adhered by the adhesive agent to form a single layer solid wood saw cutting composite board, and the substrate and a face veneer are adhered by the adhesive agent and are compacted. Two adjacent layers of single layer solid wood saw cutting composite boards of the substrate are subjected to perpendicular laminating adhesion or parallel staggered laminating adhesion in a fiber direction, and the thickness of each saw cutting solid wood single board is over 2mm. The processing flows include drying boards, saw cutting single boards, secondarily balancing single boards, edging, placing in a balance matching mode and placing in a cross perpendicular mode and gluing, sanding, adhering the face veneer, cold-press or hot-press gluing, edging, tenoning and obtaining finished products. The solid wood saw cutting composite floor board has the advantages that the structure is stable, the tolerance capability is good, the labor intensity is reduced, the production efficiency is improved, the composite floor board is uneasy to deform, environment-friendly and safe, and the like.

The invention provides a brucea javanica oil emulsion injection liquid quality control method including the following steps: a methanol/dichloromethane solution containing 1,2-dilinoleic acid-3-glyceryl oleate, 1,2-dilinoleic acid-3-glyceryl linoleate and glycerol trioleate is used as a reference substance solution I; a methanol/dichloromethane solution containing brucea javanica oil is used as a reference substance solution II; a methanol/dichloromethane solution containing brucea javanica oil emulsion injection liquid is used as a sample solution; and liquid chromatography graphs of the reference substance solution I, the reference substance solution II and the sample solution are respectively measured. According to the method, both the content and fingerprint can be measured by the same method, the method is quantitative and qualitative, and a rapid, simple and accurate and multi-angle brucea javanica oil emulsion injection liquid quality control method is provided.

The invention discloses a method for improving the performance of an AlCrN coating cutter through in-situ high-energy Ar < + > etching aftertreatment. The method comprises the steps of cleaning a base material; preparing an AlCrN functional coating; depositing the AlCrN functional coating on the treated base material; carrying out in-situ high-energy Ar < + > bombardment aftertreatment; performing in-situ high-energy Ar < + > bombardment aftertreatment on the prepared AlCrN functional coating, namely vacuumizing the base material after deposition coating is finished, keeping the processing temperature at 400 DEG C, and introducing Ar gas; and after cleaning a Ti target is started, starting an anode target material, forming positive and negative poles by the anode target material and the cleaning Ti target to pull electrons to move, enabling the electrons to collide with the Ar gas to generate Ar < + >, controlling the negative bias voltage to be -200 V, attracting the Ar < + > to carry out ion bombardment on the surface of the base material provided with the AlCrN functional coating for 40 min. According to the method, large and small liquid drop particles on the surface of the AlCrN coating can be effectively removed, meanwhile, the residual pressure stress of the coating and a base body is increased, and the surface roughness and the cutting performance of the AlCrN coating are improved.

The invention discloses an analysis method for distinguishing true Rizhao green tea from fake Rizhao green tea on the basis of a UHPLC tandem high-resolution mass spectrum and by using the metabonomic technology. A Rizhao green tea sample and a to-be-detected green tea sample are subjected to pretreatment by means of organic solvents respectively, the ultra-high-efficiency liquid chromatography-quadrupole rod-rail trap high-resolution mass spectrum method is used for achieving separation and measurement of chemical components in the sample obtained after pretreatment, then UHPLC-MS original data of the Rizhao green tea sample and the to-be-detected green tea sample is preprocessed, and finally whether the to-be-detected green tea sample is the Rizhao green tea or not is distinguished by means of a main component analysis model by using the multivariate statistical analysis method. Analysis results are displayed in a PCA score plot mode. Technicians in the field can visually judge the true or false conditions of the Rizhao green tea, related verification and analysis do not need to be conducted to obtain true or false conclusions, and detection results are accurate and reliable.

The invention discloses a liquid chromatography-tandem mass spectrometry method and a kit for accurately determining the content of five immunosuppressants in a dry blood spot. The method comprises the following steps: 1) uniformly mixing an internal standard working solution with an organic solvent to obtain an extracting solution; 2) extracting the dry blood spot of the sample to be detected by using the extracting solution, centrifuging to obtain a supernatant I after the extraction is finished, blow-drying the supernatant I with nitrogen, re-dissolving to obtain a solution II, whirling, centrifuging, and detecting; and 3) detecting the solution II by adopting a liquid chromatography-tandem mass spectrometry method, wherein the internal standard working solution contains a cyclosporin A isotope internal standard substance, an everolimus isotope internal standard substance, a sirolimus isotope internal standard substance and a mycophenolic acid isotope mixed internal standard substance. According to the method, during detection, five immunosuppressants can be quantified at a time only by 6 microliters of a blood sample, the pretreatment method is simple and rapid, the operation time is saved, the immunosuppressive blood concentration can be effectively monitored according to the indexes, and more complete treatment medication information can be obtained in time.

The invention relates to a signal processing method for a light-operated lighting luminaire. The processing method includes the following steps: reading an ambient brightness voltage value; determining an ambient light brightness threshold value; lightening the light-operated lighting luminaire; re-reading the voltage value; determining a reference voltage value; and judging whether to turn off the luminaire. The signal processing method reads the ambient brightness voltage value by utilizing an AD conversion function of a single-chip computer, thereby being able to accurately control lightening and extinguishment of the luminaire according to natural light intensity of environment; the method senses illumination intensity through a light sensing module and converts the illumination intensity into a voltage signal, the signal processing method for the light-operated lighting luminaire is simple and convenient, when a light change is detected, an illumination module is controlled to perform illumination, and the control method is convenient to operate and high in efficiency; and the method solves the problem that a traditional light-operated lighting luminaire enables a light-sensitive detector of the luminaire to misjudge a day to be daytime due to luminescence of the luminaire itself, thereby avoiding generation of a phenomenon of flashing lights.

The invention relates to double-station equipment for installing and clamping a compressor cylinder body. The double-station equipment comprises a bottom plate, a supporting frame plate, a handle, a connecting rod and a pressing plate, wherein the bottom plate is provided with the supporting frame plate, and a positioning groove is formed in the supporting frame plate; the vertical handle is installed on the bottom plate, the handle is connected with the connecting rod, the front end of the connecting rod is connected with the lower end of a lifting rod, the end of the lifting rod is connectedwith the horizontally arranged pressing plate, and arc-shaped grooves with upward openings are each formed in vertical plates below the left side and the right side of the pressing plate correspondingly. The double-station equipment for installing and clamping the compressor cylinder body is reasonable in design, scientific in structure, convenient to use, high in practicability and low in cost,and machining can be carried out on a milling machine after the equipment is adopted, so that the processing difficulty is reduced, the processing speed is accelerated, the processing precision is improved, the product qualification rate is improved, and the production and labor costs of enterprises are reduced.

The invention discloses an acidic electrolyzed oxidizing water generator electrolytic bath and a using method thereof.The acidic electrolyzed oxidizing water generator electrolytic bath comprises an electrolysis device body, pressing plates, module groove sets, conversion rings and traction wheels, the multiple module groove sets are arranged between the two pressing plates, and an acidic side cavity is formed in one side in a unit outer shell; the interior of the unit tank chamber is divided into an anode region and a cathode region through isolation, a side tank is formed in the inner wall surface of the unit tank chamber, and a conversion ring is slidably mounted in the side tank; a plurality of unit tank chambers are arranged in each module tank group, one side of each unit tank chamber is provided with an acidic side chamber and an alkaline side chamber, and liquid in the unit tank chambers is buffered by the acidic side chambers and the alkaline side chambers when discharged and then is connected with the adjacent module tank groups. The situation that the electrolysis effect is affected due to direct connection of all the module groove sets is avoided, meanwhile, solution detection can be independently conducted on all the module groove sets through the acid side cavity and the alkaline side cavity, and the maintenance cost is reduced.

The invention belongs to a production auxiliary tool of an electronic product, and specifically relates to a solder resisting plug hole air guiding plate and a manufacturing method therefor. A plurality of flat conical columns are arranged on the surface of a substrate; and the distances between the flat conical columns are equal. The manufacturing method comprises the following steps of 1) adopting an epoxy resin glass fiber plate with Rockwell hardness of greater than or equal to 115 to manufacture the substrate, performing blind cutting on the substrate based on matrix points, and forming the flat conical columns which can satisfy printing and air guiding requirements of a printed circuit board from the residual part so as to obtain an air guiding plate; 2) enabling multiple pieces of epoxy glass fiber prepregs of the substrate to be matched with a release film, and performing high-temperature and high-pressure lamination in a vacuum condition; 3) after the whole substrate is cut, performing blind cutting on the substrate at fixed depth, and forming rectangular air guiding supporting points through blind cutting; and 4) processing the cylinder which is already formed through blind cutting into the flat cones with a small top and a large bottom. The processing method is simple and efficient and high in rate of finished products; the air guiding plate is very convenient to use, and the plate can be well supported; and the air guiding plate is formed in the mode of selecting the blind cutting supporting point.

The invention discloses a temporary bonding processing method of a sheet workpiece. The method is characterized by comprising the following steps of (1) selecting a support plate and arranging an isolating membrane on the front surface of the support plate; (2) coating the isolating membrane with a layer of bonding glue; (3) attaching a to-be-processed workpiece to the bonding glue; (4) processing the workpiece with the support plate; (5) inverting the processed workpiece on a bearing part; (6) bending the support plate, making a random edge of the support plate form a warped edge and tearing at the warped edge until the support plate is stripped; and (7) bending the isolating membrane, making the random edge of the isolating membrane form the warped edge and tearing at the warped edge until the isolating membrane is stripped. By the temporary bonding processing method of the sheet workpiece, processing of the workpiece can be finished without special bonding or de-bonding equipment, so that the processing procedure is simple, the production efficiency is high, and the processing cost and the equipment investment cost are low.

The invention discloses a method for simultaneously measuring chlorite, chlorate, perchlorate and bromate in ozonization normal saline through an IC-MS method. The method comprises: (1) sample pretreatment; (2) sample introduction analysis; and (3) qualitative and quantitative analysis. The method has advantages that a sample pretreatment method is simple and rapid; the chlorite, the chlorate, theperchlorate and the bromate in the ozonization normal saline are simultaneously measured during one sample introduction; and the qualitative and quantitative analysis of four salts in the normal saline can be realized.