Please select the most similar patent number from A, B, C and D. Which number is?
A method for separation and quantitative analysis of pre-β1-HDL in serum by nonlinear gradient gel electrophoresis. The invention has the advantages that the preparation process of the nonlinear concentration gradient independent layering is simple and easy, wherein no special mixing device is needed; the electrophoresis is implemented for less than or equal to 3.5 hours, and the quantitative method does not require any radioactive substance. The nonlinear gradient gel electrophoresis can accurately detect the preβ1-HDL, demonstrating obvious superiority in performance.
A: An image reconstruction method and apparatus in nonlinear gradient imaging, and a computer readable storage medium. The method comprises: calculating an O-Space nonlinear gradient magnetic resonance imaging echo at each center placement of a target image space position on the basis of an encoding phase (S101); calculating an O-Space nonlinear gradient magnetic resonance imaging signal on the basis of a magnetic resonance signal; then simplifying the O-Space nonlinear gradient magnetic resonance imaging signal as a minimization function; and calculating the minimization function on the basis of a primal dual algorithm and an approximate mapping algorithm to obtain a reconstructed target image (S104). According to the image reconstruction method, a primal dual algorithm capable of processing nonlinear transformation and an approximate mapping algorithm capable of directly processing a non-smooth function are used to perform image reconstruction for a target image, so that the problem in the prior art of poor quality of the reconstructed image resulting from smooth approximation needing to be performed on the target image such that a reconstruction signal being excessively smooth and losing image details is mitigated, the image definition can be efficiently improved, and the image details can be kept.
B: A nonlinear self-correcting structured light three-dimensional measurement method and system for sinusoidal fringes. In the method, according to a nonlinear response of a system, a novel mathematical model of a direct current component is proposed; on the basis of the direct current component model, the respective modulation strength and mean intensity of three sets of sinusoidal fringes are adjusted; a nonlinear response equation is established, and a nonlinear relevant parameter of each pixel is calculated; the gray levels of fringe images are corrected by using an inverse function of the nonlinear response equation; wrapped phases and unwrapped phases are calculated according to the corrected fringe images; a three-dimensional point cloud is rebuilt according to triangulation, and a three-dimensional model of an object under detection is built, so that the three-dimensional measurement of the object is completed. According to the method, an increase in projection time and huge matrix inversion calculation time are not required, nonlinear errors under different frequencies and phases are reduced, and moreover, the wrapped phase precision and the unwrapped phase precision are improved, realizing high-speed and high-precision three-dimensional measurement.
C: A fully automated high-precision capillary electrophoresis instrument, comprising an electrophoresis system, a sample injection flow path, and an automatic sampling flow path; the sampling flow path comprising a shunt waste bottle (4), which is connected to a four-way connector (3), and a four-way sample injection valve (5) and a buffer syringe pump (1); the four-way trace sample injection valve (5) is connected to the electrophoretic separation capillary of the electrophoresis system (7) and quantitatively injects samples into the separation capillary; the automatic sampling flow path comprises a sampling needle (15), a sample tray (16), a cleaning tank (17), reagent bottles (20), a buffer tube (14), a six-channel liquid dispenser (13), and a syringe pump (19); the three dispensing valves of the syringe pump (19) are connected to a cleaning liquid bottle (21), an autosampler waste bottle (22), and a buffer tube (14); the fixed interface of the six-channel liquid dispenser (13) is connected to the buffer tube (14); the six dispensing interface channels alternatingly switching connection to the fixed interface are connected to the sampling needle (15), the four-way connector (3), the four-way trace sample injection valve (5), and the three reagent bottles (20); the sampling needle (15) switches to insert into the cleaning groove (17) or the sample tray (16); the autosampler waste bottle (22) is connected to the four-way trace sample injection valve (5). The described capillary electrophoresis instrument has a fast sample injection speed, high accuracy, good reproducibility, and can be widely used in automated analysis of different substances by capillary electrophoresis.
D: Disclosed in the present invention is a nonlinear optical crystal. The chemical formula of the nonlinear optical crystal is MHgGeSe 4 , M being selected from Ba or Sr. The nonlinear optical crystal has no symmetrical center, belongs to an orthorhombic crystal system, and has space group Ama2. The nonlinear optical crystal is a nonlinear optical crystal in infrared band, and has advantages of having a great nonlinear optical effect, a wide light transmitting band, a high hardness and good mechanical properties, being less brittle and less deliquescent, being easy to process and preserve, etc. Also disclosed in the present invention are a preparation method for the nonlinear optical crystal and use thereof.
Answer: C