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47results about How to "High degree of consistency" patented technology

Laboratory equipment dynamic management system based on passive RFID

The invention provides a laboratory equipment dynamic management system based on passive RFID. The laboratory equipment dynamic management system based on the passive RFID comprises multiple passive RFID tags, multiple locating reader-writers, an access control / borrowing and returning reader-writer and an application server. Each passive RFID tag has a unique ID number. All the passive RFID tags are pasted on laboratory equipment. All the locating reader-writers are installed in a laboratory, and radio frequency signals of each locating reader-writer cover the whole laboratory. The access control / borrowing and returning reader-writer is installed close to a door in the laboratory. The application server is provided with a tag writing module, a setting module, a query module, a borrowing and returning equipment module, a locating module and a database. The laboratory equipment dynamic management system based on the passive RFID solves the existing problems that laboratory equipment is overstocked and searching is aimless, can monitor the flow direction of the equipment, manage equipment information and facilitate searching in real time and saves manpower and material resources, and the position of the searched equipment can be easily and quickly determined in the laboratory.
Owner:NORTHEASTERN UNIV

A method of separating and purifying quercetagetin from tagetes erecta

A method of separating and purifying quercetagetin from tagetes erecta is provided. The method includes a step of drying tagetes erecta dry flowers, grinding into powder, dipping with ethanol or performing reflux extraction, subjecting a filtrate after filtration to rotary evaporation until a product is dry and dissolving the product to a methanol-water mixed solvent; a step of performing one-dimensional liquid chromatogram, wherein DAISO C18 is adopted as a chromatographic column, a mobile phase adopting water as an A phase and methanol as a B phase is adopted, isocratic elution is performed for 20 min with the concentration of the B phase in the mobile phase being 50-55%, eluate from the 6 min to the 12 min is collected according to an ultraviolet absorption spectrum, adopted as a target component, and subjected to rotary evaporation until a product is dry, and the product of the rotary evaporation is dissolved into the methanol-water mixed solution again; and a step of performing two-dimensional liquid chromatogram, wherein Acchrom X-Amide is adopted as a chromatographic column, a mobile phase adopting water as an A phase and acetonitrile as a B phase is adopted, isocratic elution is performed for 40 min with the concentration of the B phase in the mobile phase being 92-98%, and eluate from the 27 min to the 33 min is collected according to an ultraviolet absorption spectrum, adopted as the target component, and subjected to rotary evaporation until a product is dry to obtain quercetagetin the purity of which is 99% or above.
Owner:TIANJIN YAOYU BIOLOGICAL TECH

Equal-interval cutting device for metal hose

The invention relates to the technical field of metal hose machining, in particular to an equal-interval cutting device for a metal hose. The equal-interval cutting device comprises a rack, an equal-interval cutting mechanism and a conveying mechanism. A cutting table is arranged on the table top of the rack, the equal-interval cutting mechanism is arranged on the cutting table, and the equal-interval cutting mechanism comprises a distance positioning assembly, a cutting assembly and a discharging assembly. The distance positioning assembly is arranged on the cutting table and used for positioning the machining end of a pipe fitting, the cutting assembly is arranged at the end, close to the distance positioning assembly, of the cutting table and used for cutting the metal hose, and the discharging assembly is arranged on the cutting table, located below the distance positioning assembly and used for conveying the cut metal hose. The conveying mechanism is located at one end of the cutting table. The conveying mechanism comprises two adjusting conveying assemblies which are symmetrically arranged on the rack in a spaced mode and used for conveying the pipe fitting to the cutting table. The device can automatically and quantitatively cut the machining end of the metal hose, the production efficiency is greatly improved, and the consistency degree of cut products is high.
Owner:ZHEJIANG FLEXIBLE TECH

Negative electrode for lithium battery and preparation method thereof and lithium battery

The invention relates to a negative electrode for a lithium battery. The negative electrode for the lithium battery comprises a first active electrode substance moulded body and a second active electrode substance moulded body which are arranged on a negative current collector, wherein the first active electrode substance moulded body comprises a plurality of discrete moulding units; gaps betweenthe plurality of moulding units are filled with the second active electrode substance moulded body, and the second active electrode substance moulded body covers the surface of the first active electrode substance moulded body; the first active electrode substance moulded body contains a silicon material, and the second active electrode substance moulded body contains a carbon material. The invention further relates to a method for preparing the negative electrode by a mask method and the lithium battery. According to the negative electrode for the lithium battery, the moulding units of the silicon material are coated with the carbon material, the gaps between the moulding units are filled with the carbon material, and through the physical properties of the carbon material, the volume change of silicon during charge and discharge is absorbed and buffered, so that the technical problems such as electrode cracking, electrode crushing and separation from a conductive agent due to the volume change are relieved.
Owner:桑德新能源技术开发有限公司 +1

Method for evaluating quality of full reference color image based on quaternion

The invention discloses a method for evaluating the quality of a full reference color image based on quaternion. The method includes the following steps: constructing a brightness channel component template of any pixel point; respectively calculating the local variance of an original reference color image and a to-be-evaluated distorted color image; obtaining a local variance V, a brightness channel L, a first color channel A and a second color channel B; taking V as a real portion of a quaternion matrix, and L, A, and B as virtual portions of the quaternion matrix, respectively constructing the quaternion matrix of the original reference color image and the to-be-evaluated distorted color image; conducting singular value decomposition on the quaternion matrices to obtain corresponding singular value characteristic vector; and calculating the Euler's distance of the singular value characteristic vectors, and taking the Euler's distance as the distortion level metric of the to-be-evaluated distorted color image. According to the invention, the method can better evaluate the distortion of the color image, requires less calculation, and can effectively increase the relativity between a subjective evaluation result and objective perception, and produces the result that has the precision as human eyes.
Owner:HUAZHONG UNIV OF SCI & TECH +1

Method for detecting and evaluating conjunctiva irritation and mucous membrane irritation by utilizing chick embryo blood vascular system

The invention discloses a method for detecting and evaluating conjunctival irritation and mucous membrane irritation by using chicken embryo vascular system, comprising the following steps: (1) preparation of chorioallantoic membrane; (2) conjunctival irritation test; (3) sticking mold Stimulation test; (4) prediction model and classification, the present invention uses the standardized chicken embryo as the test system, and its vascular system at different stages of development is similar to the human eye conjunctiva and oral submucosa tissue, and the chicken embryo has a high degree of standardization, stable source and batch The difference between blood vessels is small, the vascular system has biological activity and function, the test system is simple and cheap, no special equipment is required, and the detection method is fast, sensitive and universal. The invention can detect and evaluate the conjunctival irritation and mucous membrane irritation of the substance to be tested from both qualitative and quantitative aspects. The method of the present invention can also replace living animals and human volunteers, and be directly used for the detection of conjunctival irritation and mucosal irritation of substances such as chemicals or cosmetics, and rapid screening, classification and identification thereof.
Owner:秦瑶 +1

Lead-acid storage battery and lead-acid storage battery pack

The invention discloses a lead-acid storage battery. The storage battery comprises a positive electrode, a negative electrode, a battery shell and a current converging body, wherein the positive electrode and the negative electrode have columnar strip physical shapes; a positive electrode columnar strip and a negative electrode columnar strip are parallel to each other and are arranged in an adjacent or nesting manner; the positive electrode columnar strip and the negative electrode columnar strip are isolated mutually by an isolation plate; each of the positive electrode columnar strip and the negative electrode columnar strip comprises an active material and a current collector; at least one part of each current collector is arranged in the interior or on the surface of the corresponding active material; and one end of each current collector is conductively contacted or combined with the corresponding active material while the other end is conductively connected with at least one kind of the current converging body, a connecting body between batteries or a battery output end point. The invention also discloses a lead-acid storage battery pack formed by the lead-acid storage battery. By means of improving the shapes and the array arrangement structures of the positive electrode and the negative electrode of the lead-acid storage battery, the performance of specific energy, deep discharging, high-current discharging capability, cycling life and the like of the lead-acid storage battery can be greatly improved.
Owner:杨春晓

Rotor finish machining full-automatic production line and rotor finish machining full-automatic production process

The invention discloses a rotor finish machining full-automatic production line and a rotor finish machining full-automatic production process. The rotor finish machining full-automatic production line is characterized by comprising a pretreatment system, a shaping system, a finish machining system and a polishing detection system, wherein the pretreatment system comprises a feeding mechanism, a pretreatment mechanism for pretreating a rotor and a balance block assembling mechanism for mounting a balance block on the rotor; the shaping system comprises a code printing conveying mechanism, a feeding mechanism, a shaping mechanism for shaping the rotor and an output mechanism after the rotor is shaped; the shaping mechanism is used for shaping the rotor; the finish machining system comprisesa finish machining mechanism for conducting finish machining on the outer diameter of the rotor and a detection compensation mechanism. Through cooperative use of the pretreatment system, the shapingsystem, the finish machining system and the polishing detection system, a complete full-automatic production line is formed for rotor finish machining, the automation degree is high, the product quality is good, the consistency degree is high, the efficiency is high, the labor demand is greatly reduced, and the labor cost is greatly reduced.
Owner:浙江东精智能装备有限公司

Stropharia rugoso-annulata strain breeding method

The invention discloses a stropharia rugoso-annulata strain breeding method. The breeding method comprises the following steps of preparing a stropharia rugoso-annulata rejuvenation culture medium, inoculating stropharia rugoso-annulata mother strains to the rejuvenation culture medium for variable-temperature rejuvenation pure culture, and cultivating stress-resistant and high-activity strophariarugoso-annulata mother strains; preparing a shake-flask liquid culture medium, inoculating the rejuvenated stropharia rugoso-annulata mother strains onto the shake-flask liquid culture medium, and cultivating the stropharia rugoso-annulata shake-flask liquid strain by adopting a shake-flask liquid submerged fermentation process; preparing a fermentation tank fermentation culture medium, inoculating the cultured shake-flask liquid strain onto the fermentation tank fermentation culture medium, and cultivating a liquid submerged fermentation strain of stropharia rugoso-annulata by adopting a fermentation tank liquid submerged fermentation process. A composting fermentation method is adopted, the stropharia rugoso-annulata cultivar culture medium is prepared, the prepared cultivar fermentation culture medium is put into a cultivar breeding tray hole, then a cultivated stropharia rugoso-annulata liquid submerged fermentation strain is inoculated to the cultivar fermentation culture mediumin the breeding tray hole through an inoculation gun, and the stropharia rugoso-annulata cultivar is obtained through an open solid fermentation process.
Owner:江西省农业科学院农业应用微生物研究所

Light emitting diode and light emitting device

The invention provides a light-emitting diode, which comprises an epitaxial structure, a via hole, a first insulating layer, a connecting electrode, a second insulating layer and bonding pads. The epitaxial structure comprises a first semiconductor layer, a light-emitting layer and a second semiconductor layer which are stacked in sequence; the first insulating layer comprises a first insulating part and a second insulating part which cover the second semiconductor layer, the first insulating part further extends to the bottom of the via hole, and the second insulating part and the first insulating part are spaced through an annular second opening; the first connection electrode is electrically connected with the first semiconductor layer through the first opening; the second connection electrode is electrically connected with the second semiconductor layer through the second opening; the second insulating layer is positioned on the first connecting electrode and the second connecting electrode and is provided with a third opening and a fourth opening; the first bonding pad is electrically connected with the first connecting electrode through the third opening; and the second bonding pad is electrically connected with the second connection electrode through the fourth opening. Therefore, the heights of the two bonding pads can be consistent, and a light-emitting diode with high height consistency is obtained.
Owner:XIAMEN SANAN OPTOELECTRONICS CO LTD

A dynamic management system for laboratory equipment based on passive RFID

The invention provides a laboratory equipment dynamic management system based on passive RFID. The laboratory equipment dynamic management system based on the passive RFID comprises multiple passive RFID tags, multiple locating reader-writers, an access control / borrowing and returning reader-writer and an application server. Each passive RFID tag has a unique ID number. All the passive RFID tags are pasted on laboratory equipment. All the locating reader-writers are installed in a laboratory, and radio frequency signals of each locating reader-writer cover the whole laboratory. The access control / borrowing and returning reader-writer is installed close to a door in the laboratory. The application server is provided with a tag writing module, a setting module, a query module, a borrowing and returning equipment module, a locating module and a database. The laboratory equipment dynamic management system based on the passive RFID solves the existing problems that laboratory equipment is overstocked and searching is aimless, can monitor the flow direction of the equipment, manage equipment information and facilitate searching in real time and saves manpower and material resources, and the position of the searched equipment can be easily and quickly determined in the laboratory.
Owner:NORTHEASTERN UNIV LIAONING

Method for extracting 6-hydroxy kaempferol monomer compound from marigold

The invention provides a method for extraction of a 6-hydroxy kaempferol monomer compound from Tagetes erecta. The method includes: taking Tagetes erecta dried flower, grinding the Tagetes erecta into powder, then subjecting the powder to ethanol soaking or reflux extraction, evaporating the filtrate to dryness, and then dissolving the extract in a methanol-water solvent; conducting one-dimensional liquid chromatography separation: employing a DAISO C18 chromatographic column and a water-methanol binary mobile phase, conducting isocratic elution with phase B at a concentration of 50-55%, collecting the 13-18min eluent, performing evaporation concentration to dryness; then dissolving the component in a methanol-water solvent; conducting two-dimensional liquid chromatography separation: employing an Acchrom X-Amide chromatographic column and a water-acetonitrile binary mobile phase, conducting isocratic elution with phase B at a concentration of 80-90%, collecting the 8-10min eluent, and carrying out evaporation concentration to dryness so as to obtain a target product. The method provided by the invention separates 6-hydroxy kaempferol from Tagetes erecta for the first time, and can reach purity up to more than 98%, thus providing more accurate guiding basis for quality control of Tagetes erecta and its preparations and rational clinical use of drugs.
Owner:TIANJIN YAOYU BIOLOGICAL TECH

Double-sided heat dissipation power semiconductor module and manufacturing method thereof

The invention discloses a double-sided heat dissipation power semiconductor module and a manufacturing method thereof, and belongs to the technical field of semiconductors. The semiconductor module iscomposed of an upper-layer insulating lining plate, a lower-layer insulating lining plate, a power semiconductor chip, a metal gasket, an aluminum wire, a power terminal and a signal terminal. The power semiconductor chip is jointed with the lower-layer insulating lining plate through a preformed soldering lug, and after the power semiconductor chip is placed above the preformed soldering lug, reflow soldering is carried out after a prestress pressing block is applied to the surface of the power semiconductor chip; the power terminals and the signal terminals are welded with the lower-layer insulating lining plate through ultrasonic bonding, and reflow soldering is carried out after soldering paste is coated around pins of the power terminals and the signal terminals. According to the manufacturing method of the double-sided heat dissipation power semiconductor module provided by the invention, the consistency of the height of the welded chip is improved, the welding void ratio is reduced, the connection strength between the terminal and the insulating lining plate is ensured, and the problem of cracking of a ceramic layer of the insulating lining plate caused by an ultrasonic bonding process is solved.
Owner:ZHEJIANG UNIV

Semiconductor structure and forming method thereof

The invention discloses a semiconductor structure and a forming method thereof. The method comprises the steps: providing a substrate which comprises a first device region and comprises a substrate and an initial fin part protruding out of the substrate; forming an isolation structure on the substrate exposed out of the initial fin part; forming an initial protection layer on the top surfaces of the isolation structure and the initial fin part and the side wall of the initial fin part exposed by the isolation structure; carrying out annealing treatment, so that the initial protection layer in contact with the isolation structure is converted into a sacrificial layer, and an unconverted initial protection layer on the top surface and the side wall of the initial fin part is used as a protection layer; removing the sacrificial layer of the first device region, and exposing a part of side wall, close to the isolation structure, of the initial fin part; taking the part, exposed by the protection layer and the isolation structure, of the initial fin part as an initial neck fin part; and thinning the side wall of the initial neck fin part in the first device region along the direction perpendicular to the extension direction of the initial fin part and the direction perpendicular to the side wall of the initial neck fin part to form the neck fin part. The embodiment of the invention is beneficial to improving the performance of the semiconductor structure.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Forming device for sub-circular sealing head

The invention relates to a forming device for a sub-circular sealing head, and belongs to tank body manufacturing equipment. According to the technical scheme, the forming device comprises a standardsealing head dividing mold platform and a flaring pressing mold gantry moving frame; the standard sealing head dividing mold platform comprises two semicircular molds, the two semicircular molds are arranged on half-body moving platforms correspondingly, the half-body moving platforms are provided with pressing mechanisms for fixing the edge of a circular sealing head along the arc edges of the semicircular molds, and the pressing mechanisms fix the edges of semicircular sealing heads. The forming device for the sub-circular sealing head has the advantages that the circular sealing head is placed on the device to complete cutting, flaring section pressing and welding forming after being completely manufactured, does not need to be manufactured through transferring and changing stations multiple times, and the generation of leftover materials of secondary machining is reduced; the forming quality of the sub-circular sealing head component manufactured by the molds is good, and the consistency degree of products is high; and compared with the existing equipment process, the manufacturing speed is high, large-scale production of the products is formed, and the purchasing cost or the manufacturing cost of enterprises is reduced.
Owner:山东红荷专用汽车有限公司

Semiconductor structure and forming method thereof

The invention provides a semiconductor structure and a forming method thereof. The forming method comprises the steps: forming a base, wherein the base comprises a substrate, a fin part protruding outof the substrate and a gate structure stretching across the fin part, the gate structure covers part of the top and part of the side wall of the fin part, and a gate mask layer is formed at the top of the gate structure; forming an isolation layer on the substrate exposed out of the fin part, wherein the isolation layer covers part of the side wall of the gate structure; after the isolation layeris formed, removing part of the width of the gate mask layer on the two sides of the gate structure, and etching the gate structure exposed by the gate mask layer by taking the residual gate mask layer as a mask and the isolation layer as an etching stop layer to form a beam-shaped gate structure, which comprises a gate structure first part located below the gate mask layer and gate structure second parts located on two sides of the gate structure first part and protruding out of the gate structure first part. According to the embodiment of the invention, the height consistency and the film quality of the second part of the gate structure can be improved, and the process difficulty of forming the beam-shaped gate structure can be reduced.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Armature rolling dip machine and its armature carrier and armature fixture

The invention discloses an armature clamp which comprises a locating mechanism, a material pushing mechanism and a material return mechanism, wherein the locating mechanism comprises a locating rod and a locating seat arranged at one end of the locating rod; the material pushing mechanism comprises a material pushing rod coaxially arranged with the locating rod, a material pushing seat arranged atone end of the material pushing rod and opposite to the locating seat, a material pushing sleeve arranged on the material pushing rod in a sleeving manner, a material pushing spring arranged on the material pushing rod in a sleeving manner and located between the material pushing sleeve and the material pushing seat, and a material return piece arranged at the other end of the material pushing rod; tapered concave cavities with opposite centers are respectively arranged on opposite surfaces of the locating seat and the material pushing seat; the tapered concave cavities are respectively coaxial with the locating rod and the material pushing rod; an armature butts against the locating seat and the material pushing seat; the material pushing spring provides a butting force for butting against the armature; and the material return mechanism comprises a material return hook adapted to a material return piece and a material return driver driving the material return hook to pull the material pushing rod to retract. The armature clamp solves the problem of poor paint dipping depth consistency at the two ends of the armature due to easy off-axis clamping of the clamp in a rolling and dipping process.
Owner:湖南中伟智能制造有限公司

Side plate of outdoor unit of air conditioner, outdoor unit of air conditioner and air conditioner

The invention discloses a side plate of an outdoor unit of an air conditioner and the outdoor unit of the air conditioner comprising the same and the air conditioner and relates to the technical field of air conditioners. A plurality of beading structures arranged along the length direction of the side plate are formed on the outer surface of an edgefold where the side plate of the outdoor unit of the air conditioner and a top cover of the air conditioner are assembled. The invention solves the problem that an accumulated material is easily generated at the corner edgefold when an existing sheet metal component of the side plate of the outdoor unit of the air conditioner is punched and formed, the side plate and the top cover are conveniently assembled, and a spraying coating is prevented from being scratched as a result of assembling difficulty, so that the attractiveness of a product appearance is improved, and meanwhile, after the beading structures are increased, the dimension of the sheet metal component of the side plate is punched and formed is controllable, the consistent degree of the part is high, and the stress upper limit is increased; the edgefold of the side plate is hard to tear or deform, so that the consistency of the product quality of the sheet metal component is guaranteed and the production efficiency is improved.
Owner:GREE ELECTRIC APPLIANCES INC
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