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

The invention belongs to the technical field of non-woven machines and relates to a high-speed carding machine. The high-speed carding machine comprises a main carding roll, an upper cotton discharge roll and a lower cotton discharge roll, a pair of main carding roll wallboards is fixed on a rack and at the positions respectively corresponding to the front end face and the rear end face of the main carding roll, a space between the main carding roll and the upper cotton discharge roll forms an upper triangle, and a space between the main carding roll and the lower cotton discharge roll forms a lower triangle. The high-speed carding machine is characterized in that an upper triangle airflow dissolving mechanism is arranged at the position corresponding to the upper triangle and used for dissolving airflow of the upper triangle and enabling negative pressure to be formed in the upper triangle; a lower triangle airflow dissolving mechanism is arranged at the position corresponding to the lower triangle and used for dissolving airflow of the lower triangle and enabling negative pressure to be formed in the lower triangle; the upper triangle airflow dissolving mechanism and the lower triangle airflow dissolving mechanism are respectively supported between the main carding roll wallboards. Carding rings are reduced, CV value is lowered, and lapping quality of follow-up stations is improved.

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 relates to a spinning method of a high-molecular-weight and high-viscosity spinning solution, which mainly solves the technical problems of poor fluidity, poor spinnability, high spinning pressure and high filtration pressure of the high-molecular-weight and high-viscosity spinning solution in the prior art. By adopting a spinning method of high-molecular weight and high-viscosity spinning solution, comprising the following steps: a polyacrylonitrile / dimethyl sulfoxide solution with a molecular weight of 100,000 to 300,000 and a viscosity of 80 Pa·s to 300 Pa·s, through Wet spinning to obtain a polyacrylonitrile precursor, which is characterized as follows: the breaking strength is 5cN / dtex to 8cN / dtex, the CV value of the breaking strength is 4% to 20%; the elongation at break is 8% to 16 %, the CV value of elongation at break is 4% to 20%, which solves this problem well and can be used in the industrial production of polyacrylonitrile-based carbon fiber precursors.

The invention belongs to the field of protein detection, and discloses a detection method of single-molecule protein. The protein to be tested is mixed with the target protein antibody to form a complex of the protein to be tested and the target protein antibody, which is mixed with the detection antibody marked with a marker, dissociated and collected to be tested. The complex of the protein to be tested and the detection antibody; the label is a fluorescein label or an enzyme label; the complex of the protein to be tested and the detection antibody is directly dispersed on the microfluidic chip or the protein to be tested is first The complex with the detection antibody and the substrate corresponding to the enzyme label are mixed and reacted, and then the reaction solution is dispersed in the microfluidic chip; the laser confocal detection system is used for fluorescent signal scanning and single molecule counting. The detection method of the invention can quickly perform quantitative detection on single-molecule proteins, has high detection sensitivity, and is suitable for proteins whose expression abundance is too low. The detection method of the invention has the advantages of convenient operation, accurate detection result, small deviation of CV value, high throughput, and can detect multiple samples at one time.

The invention discloses a production method of high-intensity and high-modulus polyethylene fibers. The method comprises a swelling and dissolving step, a filtering step, a spinning step, a refrigerating and solidifying step, a pre-stretching step, an extracting step, a drying step, an ultra-stretching step and a winding step, wherein the swelling and dissolving step is performed in a kneading machine; and transparent and uniform spinning solution obtained in the swelling and dissolving step is quantitatively fed into a single screw extruder with stirring for extruding. The production method has the advantages of simple preparation method and high yield of over 300 tons / year and is easy to operate.

The present invention provides a method for preparing an immunochromatographic test strip for accurate quantitative detection, wherein the preparation of the binding pad includes: S1: cutting the binding pad: cutting the binding pad into the size required for assembling into a finished product; S2: Preparation of labeling complexes: after the markers are labeled with antibodies or antigens, store them in preservation solution; S3: Preparation of soaking solution for labeling complexes: dilute the diluent with the above-mentioned preservation solution containing the labeling complexes A certain concentration of the soaking solution of the labeled complex; S4: Infiltration of the binding pad: adding the soaking solution of the labeled complex to the binding pad for infiltration; S5: The process of balancing the binding pad: spreading the soaked binding pad on the carrier, Stand still in a constant temperature and humidity environment; S6: dry the bonded pad: dry the bonded pad that has been balanced. The method of the invention can effectively improve the precision of the test strip for accurate quantitative detection, and has simple preparation method, high production efficiency, low production cost, and is convenient for industrialized production.

The present invention relates to the lower apron pin technology of the drafting mechanism of the spinning frame. A kind of apron lower pin is designed. Its random cross-section has the same shape, which is basically T-shaped, and the upper surface of the T-shaped horizontal part is a section. A combined shape connected by a straight line and a section of curve, the curved section is higher than the straight section and has a height difference, and the straight section has a certain thickness, characterized in that the length of the section of the straight section is 5-7.9 mm; the curved section connected with the straight section The length of the straight part is 19-16.1 mm, and the distance from the highest point to the front edge of the straight part is 10-12.9 mm; the thickness of the straight part is 1.5-2.9 mm, and the height difference between the curved part and the straight part is 3.0- 1.6mm. It has better control over drafting sliver, significantly improved yarn quality, simple structure and wide adaptability.

The invention discloses a combined quantitative detection system for the content of insulin-like growth factor binding protein-1 and fetal fibronectin, including a kit and detection equipment; the kit uses double-antibody sandwich immunochromatography technology, and supporting instruments It is used to realize the quantitative detection of insulin-like growth factor-binding protein-1 and fetal fibronectin in vaginal secretions or vaginal effusions of pregnant women, and provides a reference for diagnosing premature rupture of membranes and predicting premature delivery. Also disclosed is a preparation method of a gold-labeled pad for simultaneously measuring the contents of insulin-like growth factor-binding protein-1 and fetal fibronectin and the prepared gold-labeled pad. The gold-labeled pad adopts two kinds of antibodies to label colloidal gold and mix The gold-spraying method of the reconstituted solution realizes the simultaneous detection of two proteins, realizes the quantitative detection of two indicators at the same time in one sampling, the operation is fast and simple, and the detection accuracy is high.