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59results about How to "Change defects" patented technology

Norovirus real-time fluorescent RT-PCR detection kit and application thereof

The invention relates to a norovirus real-time fluorescent RT-PCR detection kit and an application thereof. The invention belongs to the field of gene detection. The kit provided by the invention comprises a pair of oligonucleotide primers and an oligonucleotide probe aiming at type I norovirus obtained by screening, and/or a pair of oligonucleotide primers and an oligonucleotide probe aiming at type II norovirus obtained by screening. With a one-step real-time fluorescent RT-PCR, detectable minimal concentration of type I and/or type II norovirus is 1.0*10<2>copies/mL. Therefore, sensitivity and specificity of the kit provided by the invention are both high. With the invention, rapid early-stage detection and quantitative analysis of norovirus in samples such as stools and rectal swabs are realized. With the kit provided by the invention, detection period is short, detection efficiency is high, virus detection specificity is high, accuracy is high, and virus qualitative analysis and quantitative analysis can be carried out simultaneously. The sensitivity of the kit is higher than common PCR and immunological detection methods. The operation is simple, and the kit is easy to popularize. Experiment result repeatability is good.
Owner:湖北朗德医疗科技有限公司

Large-area horizontal air supply type air purifier

The invention relates to the technical field of purifying equipment, in particular to a large-area horizontal air supply type air purifier. The large-area horizontal air supply type air purifier comprises a shell, a prefilter, a double-output-shaft double-wheel four-air-inlet low-noise centrifugal fan, a highlight ionizer, a medium adsorption layer, a catalysis filtering layer, an ozone filtering layer, a low-resistance high-efficiency filter and a light reflection device. The shell is internally provided with an upper cavity and a lower cavity, the prefilter is arranged on one side, close to an air inlet, in the lower cavity, the double-output-shaft double-wheel four-air-inlet low-noise centrifugal fan is arranged in the lower cavity, and a cavity type purifying module is arranged in the upper cavity of the shell. The highlight ionizer is arranged in the middle of the cavity type purifying module which comprises the medium adsorption layer, the catalysis filtering layer, the ozone filtering layer, the low-resistance high-efficiency filter and the light reflection device. The large-area horizontal air supply type air purifier has the advantage that by the aid of the cavity type purifying module, the highlight ionizer, the low-resistance high-efficiency filter and the like, harmful gases such as PM2.5 (particulate matter 2.5), formaldehyde, TVOC (total volatile organic compound) and the like in the air can be cleared efficiently.
Owner:上海龙禹环保科技有限公司

Slope reinforcement device used for municipal construction engineering

The invention provides a slope reinforcement device used for municipal construction engineering. The slope reinforcement device used for municipal construction engineering comprises a concrete frame protective plate and a protective layer, wherein the concrete frame protective plate is arranged on a slope. A plurality of hollowed-out areas are formed in the protective plate and used for planting green plants. The protective layer is a non-woven fabric protective layer and is arranged on the surface of the protective plate. The protective plate is fixed to the slope through an anchor rod. The anchor rod comprises an anchor ribbed rod body, a reinforcement rod head and a plurality of force hook heads, wherein the top end of the anchor ribbed rod body is fixedly connected with the reinforcement rod head, and the force hook heads are welded to the two sides of the reinforcement rod head correspondingly; and the anchor ribbed rod body is made of a steel stranded wire. According to the slope reinforcement device used for municipal construction engineering, the structure of the anchor rod is optimized, and thus the anchor rod is more suitable for shallow fixing. The force hook heads are obliquely welded to the reinforcement rod head, welded to the two sides of the reinforcement rod head in opposite directions correspondingly and obliquely arranged at the inclination angle of 30-45 degrees so that the prestress force applied to the anchor ribbed rod body can be increased easily, the force hook heads can be hooked in the slope more powerfully, and excellent pulling resistance is achieved.
Owner:云林建设集团有限公司

A slope reinforcement device for building municipal engineering

The invention provides a slope reinforcement device used for municipal construction engineering. The slope reinforcement device used for municipal construction engineering comprises a concrete frame protective plate and a protective layer, wherein the concrete frame protective plate is arranged on a slope. A plurality of hollowed-out areas are formed in the protective plate and used for planting green plants. The protective layer is a non-woven fabric protective layer and is arranged on the surface of the protective plate. The protective plate is fixed to the slope through an anchor rod. The anchor rod comprises an anchor ribbed rod body, a reinforcement rod head and a plurality of force hook heads, wherein the top end of the anchor ribbed rod body is fixedly connected with the reinforcement rod head, and the force hook heads are welded to the two sides of the reinforcement rod head correspondingly; and the anchor ribbed rod body is made of a steel stranded wire. According to the slope reinforcement device used for municipal construction engineering, the structure of the anchor rod is optimized, and thus the anchor rod is more suitable for shallow fixing. The force hook heads are obliquely welded to the reinforcement rod head, welded to the two sides of the reinforcement rod head in opposite directions correspondingly and obliquely arranged at the inclination angle of 30-45 degrees so that the prestress force applied to the anchor ribbed rod body can be increased easily, the force hook heads can be hooked in the slope more powerfully, and excellent pulling resistance is achieved.
Owner:云林建设集团有限公司

Method and device for measuring human tissue quasi-elastic coefficient and elasticity

The invention discloses a method for measuring a human tissue quasi-elastic coefficient. The method adopts a simplex optimizing method to determine the quasi-elastic coefficient of a human tissue, andreduces nine three-dimensional elastic coefficients to three quasi-elastic coefficients (for example, in a two-dimensional ultrasonic patient treatment plane or detection, four elastic coefficients are reduced to two quasi-elastic coefficients), and can save the calculation time. The invention also provides a human tissue quasi-elastic coefficient measurement method on the basis of the quasi-elastic coefficient measurement method, which adopts a secondary imaging method to measure relative change of the human tissue quasi-elastic coefficient, can thoroughly change the defects of ultrasonic images depending on the precision of elastic image instruments; change of the human tissue structure can be accurately determined according to the measured change; in addition, the invention also provides an ultrasonic detector or detection device matching the human tissue quasi-elastic coefficient, expensive imaging devices can be avoided, and the ultrasonic detector or detection device is low in price; and the detector can be accepted by public, and can be promoted and applied.
Owner:聂西凉

Intelligentized rotary table metal casting sprue separating integrated machine and method thereof

The invention relates to an intelligentized rotary table metal casting sprue separating integrated machine and a method thereof. The intelligentized rotary table metal casting sprue separating integrated machine comprises a machine cabinet. An annular rotary table driven by an electric index plate is arranged in the middle of the machine cabinet. Positioning poles used for placing metal castings are arranged on the annular rotary table at intervals. A metal casting sprue separating device used for achieving sprue waste separation after the metal castings are rotated to the position is arranged on one side of the annular rotary table. A metal casting separating device used for achieving metal casting product separation after the metal castings are rotated to the position is arranged on the other side of the annular rotary plate. An ejection mechanism used for ejecting metal casting wastes after the metal casting wastes are rotated to the position along with the annular rotary plate is further arranged on the lower side of the annular rotary table and on the front portion of the machine cabinet. The intelligentized rotary table metal casting sprue separating integrated machine is compact in structure; metal casting sprue separation and metal casting separation are convenient; the automation degree is high, and the operation method is simple and convenient.
Owner:QUANZHOU MIAOYI AUTOMATION MACHINERY CO LTD

Fuel cell metal pole plate multiphase coating for suppressing columnar crystals and preparation method thereof

The invention relates to a multi-phase coating of a metal pole plate of a fuel cell for inhibiting columnar crystal and a preparation method of the multi-phase coating. The multi-phase coating coats the metal pole plate and comprises at least one group of coating units which are sequentially arranged outwards from the upper surface of the metal pole plate; each coating unit comprises a metal two-phase layer, a metal compound three-phase layer and an anti-corrosion compact single-phase layer; and the multi-phase coating is prepared by the steps of substrate surface pretreatment of the metal pole plate, metal two-phase layer deposition, metal compound three-phase layer deposition, single-phase layer deposition and the like. Interfacial tension can be changed by a second element in an interface phase according to a Gibbs adsorption equation; the wettability on a substrate during thin film nucleation is improved; and the roughness of the thin film surface is significantly reduced. Compared with the prior art, the multi-phase coating has the advantages that two-phase metals affect each other in growth and deposition processes, in summary, avoidance of a columnar crystal structure which is easily generated by a single-phase coating is facilitated, formation of an equiaxial crystal structure with more excellent properties of the compactness and the like is facilitated, and the lifetime of the metal pole plate of the fuel cell under the working condition of the fuel cell is finally prolonged.
Owner:SHANGHAI JIAOTONG UNIV

Method for in-situ synthesis of three-dimensional nanometer palladium catalyst layer through electrode activity biological membrane and application

The invention provides a method for in-situ synthesis of a three-dimensional nanometer palladium catalyst layer through an electrode activity biological membrane. At first, a constant-potential culture method is utilized for growing the electrode activity biological membrane on the surface of an anode of an electrolytic tank stably, then the electrode activity biological membrane is soaked into a palladium salt solution, sodium formate is provided to serve as an electron donor, and by controlling the reaction time, the reaction temperature and the divalent palladium concentration, the electrode activity biological membrane three-dimensional nanometer palladium catalyst layer is obtained. The palladium catalyst electrode is applied to organic pollutant electrocatalytic reduction. Catalyst layer metal palladium nanometer particles are spherical, are distributed uniformly, and are mutually connected to form a stable three-dimensional network catalyst layer structure with the electrode activity biological membrane. The prepared catalyst layer can be directly applied to the electrocatalytic reduction reaction of pollutants and has good electrocatalytic reduction activity to nitrobenzene, and the application potential of microorganism nanometer palladium is greatly improved.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

A kind of anti-skid sealing layer composite material for road and preparation method thereof

The invention relates to an anti-skid seal coat composite material used for roads and a preparation method thereof. The composite material includes: a component A, comprising an aqueous epoxy resin emulsion and a phenol-terminated polyurethane prepolymer emulsion; a component B comprising an aqueous epoxy resin curing agent, emulsified asphalt, styrene-acrylic emulsion, a flame retardant, TiO2, color paste, ultraviolet absorber, an antioxidant, an anti-aging agent, and a defoamer; a component C including: an antiskid aggregate. The preparation method includes: uniformly blending the componentA and component B to obtain a liquid adhesion material; uniformly spraying the liquid adhesion material, according to metric use amount, on the surface of a road, and meanwhile uniformly spreading theantiskid aggregate, thereby preparing the anti-skid seal coat composite material after the liquid adhesion material is dried and cured. The composite material is based on the aqueous epoxy resin withcombination of the styrene-acrylic emulsion, polyurethane emulsion and the like, which can form a layer of compact waterproof and anti-wearing layer with the antiskid aggregate, thereby producing thecomposite material; the composite material is applied to preventive maintenance treatment on the road surface, can significantly increase the surface friction force and wearing resistance of the roadsurface, reduces water permeability coefficient, and reduces generation of diseases and safety accident.
Owner:TAIYUAN LUBANG TECH CO LTD
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