41results about How to "Lower CV value" patented technology

The invention discloses a full-automatic chemiluminiscence tester and belongs to the field of chemiluminiscence testing.The full-automatic chemiluminiscence tester comprises a mechanical arm module, a refrigeration module, a power module, a reagent sample disk, a sampling needle component, a stirring component, a reaction cup frame, an incubation device, a magnetic separation component, a washing station component and a measuring room.Full-automatic management is achieved for mixing, reacting, incubating, magnetic separating, detecting and other procedures of a sample to be tested, the detection efficiency is improved, and operation errors are reduced.

The invention provides a method for preparing an accurate quantitative detection immunochromatographic test strip. The preparation of a bonding pad comprises the steps of: S1: cutting a bonding pad: cutting the bonding pad into a size required for assembly into a finished product; S2: preparing a labeling complex: after labeling the antibody or antigen on a marker, storing the marker in a preservation solution; S3: preparing an infusion solution of the labeling complex, and mixing and diluting the diluent with the above-mentioned preservation solution containing the labeled complex to a soaking solution of the labeling complex with a certain concentration; S4: infiltrating the bonding pad: adding the infusion solution of the labeling complex into the bonding pad for infiltrating; S5: performing the bonding pad balancing process: laying the infiltrated bonding pad on a carrier stand in a constant temperature and humidity environment; S6: drying the bonding pad: drying the balanced bonding pad. The method of the invention can effectively improve the precision of the test strip for accurate quantitative detection, and has the advantages of simple preparation method, high production efficiency, low production cost and convenient industrial production.

The invention relates to an immunofluorescence detection light path mechanism. The immunofluorescence detection light path mechanism comprises a light source generation device, an optical two-phase sub-mirror, a first convergent lens component, a second convergent lens component and a fluorescence collection device, the optical two-phase sub-mirror is arranged on a transmission light path of a light source, the first convergent lens component and the second convergent lens component are respectively located the light path of the optical two-phase sub-mirror and a light path of transmission light, the fluorescence collection device is located on one side, far from the optical two-phase sub-mirror, of the second convergent lens component; and the first convergent lens component is configuredto do rectilinear motion along the direction of a light path of reflection light of the optical two-phase sub-mirror according to an electric signal applied on the first convergent lens component. Therefore, the fluorescence values of fluorescence test papers of a same to-be-detected sample detected by multiple immunofluorescence detection instruments are unified, the influence on the numerical value of the test result caused by the difference of parts in the instrument and the difference produced in the production and assembly is reduced, and the testing accuracy is improved. The invention further provides the immunofluorescence detection instrument and a calibration method of the immunofluorescence detection instrument.

The invention relates to a centre blowing cooling solidification process method for preparing polyvinyl alcohol fiber. The method has the characteristics that the centre blowing cooling technique to cool a polyvinyl alcohol melt extruded from a spinneret plate in a melt spinning is adopted; by controlling various centre blowing process parameters, the centre blowing wind speed is 0.8 to 4m/s, the air temperature is 20 to 25 degrees centigrade, the humidity is 40 to 65%, and the centre blowing height is 0.3 to 1.5m, therefore, the cooling efficiency of a filament tow is effectively improved, the spun raw filament is uniformly cooled, the stability of spinning is improved, the spinning flaw is lowered and the uniformity of spun fiber section is improved, and the water content of spun fibers can be controlled effectively, so that high stretching is realized to manufacture high-performance polyvinyl alcohol fiber which has uniform strength and fineness and high modulus and is suitable for being used as the reinforcing material in concrete.

The invention relates to a preparation method of a composite tow for a cigarette. The preparation method includes the processes of drying crystallization, melt compounding spinning, drafting, tensionheat setting, crimping, drying, relaxing heat setting, packaging and the like. According to the tow for the cigarette, in the forming process of a filter tip stick, water-based emulsion adhesives or glycerol triacetate plasticizers do not need to be added, and the preparation method can be used for preparing the additive-free, safe and healthy filter tip stick.

A lower pin of apron for spinning machine features that it has a basic T-shaped cross-section, its top surface is composed of a straight line part and a curve part, and said straight line part and curve part has the size relation individually or relatively. Its advantages are simple structure, better control force for drafting yarn, and high quality of yarn.

The invention belongs to the field of protein detection and discloses a detection method for monomolecular protein. The detection method for the monomolecular protein comprises the following steps: mixing to-be-detected protein and a target protein antibody to generate a to-be-detected protein and target protein antibody compound, mixing the to-be-detected protein and target protein antibody compound and a detection antibody marked by a marker, performing dissociation and collecting a to-be-detected protein and detection antibody compound; directly dispersing the to-be-detected protein and detection antibody compound into a micro-fluidic chip, or mixing the to-be-detected protein and detection antibody compound and a substrate corresponding to an enzyme marker, carrying out a reaction anddispersing reaction liquid into the micro-fluidic chip; performing fluorescent signal scanning by a laser confocal detection system and performing monomolecule counting. According to the detection method, the monomolecular protein can be detected quantitatively and rapidly; the detection method is high in detection sensitivity and suitable for protein with too low expression abundance. The detection method is convenient to operate, accurate in detection result and small in CV value deviation; furthermore, the flux is high and multiple samples can be detected at a time.

The invention discloses a preparation and storage method of chicken erythrocyte. The method comprises the following steps: collecting heparin anticoagulation venous blood of an adult healthy rooster; purifying by adopting the following steps: removing leukocyte by employing a gelatin sedimentation method; removing synechia among cells by ethylenediamine tetraacetic acid treatment; removing soterocyte and cell debris by employing a low-speed centrifugal process; fixing and storing the purified chicken erythrocyte in a glutaraldehyde solution; dyeing regularly and detecting an X-axis half-peak variation coefficient (CV) of chicken erythrocyte deoxyribonucleic acid (DNA) in flow cytometry detection, wherein chicken erythrocyte deoxyribonucleic acid can be used when X-axis half-peak variation coefficient is within 10%. The chicken erythrocyte CV value obtained by the invention accords with the commercially available standard, is simple and convenient to operate, and strong in repeatability, and can be developed as the commercially available product.

The invention provides a method and device for impregnating carbon fiber tows; the method comprises the steps of: S1, unfolding carbon fiber tows in a glue box through unfolding rollers, and soaking the carbon fiber tows in the glue box to for more than a preset value; S2, concentrating the carbon fiber tows soaked with a glue through a concentration roller; S3, extruding the concentrated carbon fiber tows soaked with the glue to remove the excess glue; and S4, performing sliding extrusion on the extruded carbon fiber tows, and winding the extruded carbon fiber tows on a tow winding frame. Thedevice comprises a frame body, and a beam fixing frame, at least two first tow unfolding rollers, a glue box holding platform, a glue box, a first concentration roller, a glue extruding mechanism anda sliding extruding mechanism which are fixed on the frame body. According to the invention, the strength value of a sample can be increased, and CV (circulation volume) value of the result of samplemeasuring can be reduced.

The invention discloses a preparation method of polymer microspheres with uniform particle size, and relates to the field of polymer microspheres. Acrylamide substances are introduced into seed microspheres to react with phenylboronic acid substances, polymerization is performed to generate a new heat-sensitive compound to activate the seeds, and seed microspheres which are swelled, a polymerizable monomer, a cross-linking agent, a pore-foaming agent, an initiator and the like are heated to a polymerization temperature, and are polymerized to obtain the polymer microspheres with uniform particle size. The method has the advantages of being simple in design of the seed microspheres, short in total reaction time, high in swelling multiple, high in recovery rate and the like, the production cost is reduced, the environmental pollution is reduced, and the market application value is very high.

The invention provides a kit for detecting the content of Dabigatran based on a thrombin chromogenic substrate method. The kit comprises thrombin, a thrombin chromogenic substrate, a Human plasma standard substance containing the Dabigatran and diluting liquid; the working concentration of the thrombin is 0.1-2 U/ml; the working concentration of the thrombin chromogenic substrate is 0.05-1 mmol/L. A detection mechanism is that the thrombin is added into sample plasma and is used for cracking the thrombin chromogenic substrate to obtain an absorbance signal. As the Dabigatran in the plasma can inhibit the thrombin, the content of the Dabigatran is negatively related to the absorbance signal within a certain range. The kit realizes the monitoring of change in the content of the Dabigatran in the plasma based on the thrombin chromogenic substrate method. The kit provided by the invention realizes the rapid and accurate detection on the content of the Dabigatran; when the Dabigatran is within 0-500 ng/ml, R is more than or equal to 0.99, so that the linear relation is better; the relative deviation of the kit is smaller than 1 percent, so that the accuracy is high.

The invention discloses a liquid crystal sealant composition. The liquid crystal sealant composition comprises epoxy resin, curing agent, filler and silane coupling agent. The curing agent refers to modified dicyandiamide. Compared with the existing liquid crystal sealant composition at a temperature of over 170 DEG C, the liquid crystal sealant composition can be solidified at a temperature of </= 150 DEG C. The filler refers to high crosslink polymeric microsphere. Compared with the inorganic filler, the filler is compatible to the epoxy resin and is easy to disperse; the grain size is uniform so that uneven thickness of liquid crystal boxes affecting service life of the liquid crystal box is avoided. Otherwise, the liquid crystal sealant composition is used for sealing a liquid crystal display device. After the liquid crystal sealant composition is solidified, the seal part of a solidified has no bubbles or no bad phenomenon of uneven lines. The solidified liquid crystal display device has excellent bonding strength, water-tolerant reliability and flexibility.

The invention discloses a rubber gasket lower pin. The shapes of any sections of the rubber gasket lower pin are the same, and the sections of the rubber gasket lower pin are basically in a T shape. The upper surface of the transversely linear part of the T shape is in a combination shape in which a straight line and a curved line are connected, the curved line part is higher than the straight line part, a height difference exists, the straight line part has a certain thickness, and the length of the straight line part is 4-4.9 millimeters. Correspondingly, the length of the curved line part which is connected with the straight line part is 20-19.1 millimeters, the distance from the highest point of the curved line part to the front edge of the straight line part is 9-9.9 millimeters, and correspondingly the distance C1 from the highest point to the tail end of the rubber gasket lower pin is 15-14.1 millimeters. The thickness of the straight line part is 2-5.3 millimeters, and correspondingly the height difference of the curved line part and the straight line part is 3.1-3.4 millimeters. The rubber gasket lower pin is simple in structure, convenient to mount and suitable for all existing ring spinning frames using curved face stair lower pins, the traction parts of the spinning frames do not need to be changed any more, and therefore the rubber gasket lower pin has wide applicability and economical efficiency.

The invention discloses a diphenhydramine colloidal gold test strip which comprises a bottom plate, and a sample pad, a conjugate pad, a nitrocellulose membrane, absorbent paper and a clamping shell which are sequentially laid on the bottom plate, wherein a detection line and a quality control line are marked on the nitrocellulose membrane, a colloidal gold labeled antibody of diphenhydramine is arranged on the combination pad, and the colloidal gold labeled antibody is formed by coupling colloidal gold and a diphenhydramine monoclonal antibody. The test strip is rapid, accurate, flexible andmobile, is suitable for on-site supervision and detection of diphenhydramine, and can rapidly and accurately detect whether a sample contains diphenhydramine or not in a short time so as to determinewhether diphenhydramine is illegally added or not. The test strip is suitable for quality control detection of production enterprises such as herbal tea and beverages/make-up liquids/Chinese patent medicines or supervision and inspection of the consumer goods by government detection institutions. Compared with the prior art, the method has the characteristics of high detection sensitivity, high detection accuracy, convenience and quickness in operation, low detection cost and the like.

The invention provides an efficient SCR (selective catalytic reduction) denitrification reactor. The efficient SCR denitrification reactor is characterized in that the top of the reactor adopts a pitched-roof structure, that is, an included angle A is formed between a top plate of the reactor and the horizontal direction, and A ranges from 9 degrees to 20 degrees; a rectifier adopts an inclined structure, that is, a front view of the rectifier is in a right trapezoid shape, one leg of the right trapezoid is parallel to the horizontal direction, and an included angle B is formed between the other leg and the horizontal direction and ranges from 0.5 degrees to 3 degrees; the leg parallel to the horizontal direction is below the other leg. With the adoption of the design of the reactor and the rectifier, a gradually expanding channel is formed with a channel in front of a horizontal flue, and a vertex of an upper base of the rectifier coincides with a connection point of the reactor and the horizontal flue. The reactor can meet a technical index requirement (CV value is smaller than 15%) of a flow field without addition of a guide plate at the top of the flue or the reactor.

The invention relates to a water-soluble fiber and high-count cashmere yarn spinning process. The process comprises the following specific steps of (1) firstly opening cashmere, adding oil and water,then preliminarily mixing the cashmere and water-soluble fibers, and feeding a mixture into a mixing willow for full mixing; (2) processing the mixture obtained in the step (1) into rough yarns by using a carding machine, and controlling the temperature of a carding workshop to be 24-26 DEG C and the humidity to be 60-65%; (3) drafting and twisting the rough yarns obtained in the step (2) by a spinning frame to form spun yarns, winding the spun yarns into yarn ears, controlling the temperature of the carding workshop to be 20-30 DEG C and the humidity to be 60-65%, and controlling the draft multiple of the spun yarns to be 1.30-1.35; and (4) performing bobbin replacement and winding on the spun yarns by using a bobbin winder, and removing relatively thin or thick slivers at the same time.According to the process, on one hand, the spinning process is improved, and on the other hand, the water-soluble fibers are modified, so that the cashmere and the water-soluble fibers can be uniformly mixed in the wool mixing stage, after the water-soluble fibers are removed through water washing, the slivers can be uniform, and the wearability of a product is good.