6results about How to "Accurate method" patented technology

The invention relates to a detection method of a medicine for dispelling wind and eliminating dampness. The detection method comprises the following steps: thin-layer identification of a notopterygium root medicinal material, thin-layer identification of a radix angelicae pubescentis medicinal material, thin-layer identification of a radix saposhnikoviae medicinal material, thin-layer identification of ligusticum and ligusticum wallichii medicinal materials, and thin-layer identification of a honey-fried licorice root medicinal material. Through methodological investigation, the detection method has the effects of strong specificity, good durability, clear spots after thin layer expansion, satisfactory separation degree and the like, can effectively control the product quality condition, improves the product quality detection standard, and ensures the product quality.

This invention provides a system for evaluating the breakthrough pressure of temporarily plugged chemical bridge plugs, comprising: a high-temperature oven; a breakthrough pressure main device for holding the base fluid of the temporarily plugged chemical bridge plug, which can be arranged inside the high-temperature oven, the breakthrough pressure main device having an inlet pipeline and an outlet pipeline; a horizontal flow pump for injecting a displacement medium, the horizontal flow pump being connected to the inlet pipeline; a first pressure sensor and a second pressure sensor respectively installed on the inlet pipeline and the outlet pipeline; a pressure sensor workstation connected to the first pressure sensor and the second pressure sensor for recording the data measured by the first pressure sensor and the second pressure sensor; and a camera for capturing the breakthrough process of the temporarily plugged chemical bridge plug. This invention also provides a method for evaluating the breakthrough pressure of temporarily plugged chemical bridge plugs.

This invention relates to the field of drug detection technology, specifically to a method for detecting nitrogen oxide impurities in vonoprazan fumarate tablets and its application. The invention employs liquid chromatography-mass spectrometry (LC-MS) to detect the nitrogen oxide impurities in the sample. The detection method provided by this invention can achieve qualitative and quantitative analysis of nitrogen oxide impurities in vonoprazan fumarate tablets, and has advantages such as high impurity separation, good specificity, high precision, good repeatability, and high sensitivity. The method is accurate and reliable and can be widely applied to the quality testing of vonoprazan fumarate tablets.

This invention discloses an immune cell with enhanced anti-tumor effect, its preparation method, and its application. Experiments using this invention show that... SERTAD1 CD8 gene overexpression + T cells can enhance their function in anti-tumor immunotherapy. SERTAD1 Gene overexpression can downregulate CD8 + The expression of immune checkpoint molecules on T cells upregulates the expression of mRNAs of tumor-killing cytokines. In the MC38-OVA subcutaneous tumor model, Naïve CD8 cells were extracted from OT-I mice. + T cells were infected with a virus to overexpress SERTAD1, followed by adoptive transfer to mice. The results showed that SERTAD1 overexpression enhanced CD8 expression. + T cells kill MC38-OVA cells, inhibit the growth of MC38-OVA tumor cells, and overexpress SERTAD1 CD8. + The tumor volume and weight in the T-cell adoptive group were significantly smaller than those in the control group.

This invention relates to a rapid prediction method for the spoilage period of heat-sensitive, oil-containing powdered products. The method includes: measuring the shelf life (t) of pure oil products from different manufacturers with the same shelf life; measuring the OSI value of the oil at 120°C and calculating the average value (a); placing the oil-containing powdered products in ovens at different temperatures for fortification, and determining the highest fortification temperature (T) at which browning does not occur; taking pure oil with an OSI value of a ± 0.1 h and measuring the sensory spoilage period (d days) of the pure oil at T°C, and calculating the average peroxide value rate (V1); fortifying the oil-containing powdered products at T°C for d days; taking oil-containing powdered samples before and after fortification, extracting them with an organic solvent to obtain the extracted oil before and after fortification, and calculating the average peroxide value rate (V2); if V2 ≤ V1, then the predicted spoilage period of the oil-containing powdered products is ≥ t. This invention provides a simple and highly accurate method.

The application discloses a method for measuring electromagnetic wave propagation constant of two-dimensional periodic structure. The method is based on field values of five points in the structure, and uses an analytical expression containing the field values of the five points to respectively express phase constants and attenuation constants of two dimensions of the two-dimensional periodic structure. The method is simple, fast and accurate. The method can be used for two-dimensional uniform structure, two-dimensional periodic structure, closed transmission line structure, open transmission line, two-dimensional waveguide structure, antenna radiation structure, non-loss structure and loss structure.