523 results about "Sequence repeat" patented technology

A method includes rectifying AC power and controlling switching of first, second and third currents from and rectified power and a switching sequence that is locked to the AC cycle time by sensing an amplitude of at least one of the AC power and the rectified power. The first, second and third currents are conducted through corresponding first, second and third series of color light emitting devices of different colors. The switching sequence repeats at least twice each AC cycle time.

A method for obtaining an intraoral x-ray image determines an initial spatial position and angular orientation of an x-ray source relative to a detector. A first x-ray image is obtained with the x-ray source at the initial spatial position and angular orientation and stored, associating the initial spatial position and angular orientation to the first x-ray image. A sequence repeats that calculates a next spatial position and angular orientation for the x-ray source, provides positional adjustment information between the x-ray source and detector for obtaining a next x-ray image, measures and records the actual spatial position and angular orientation of the x-ray source relative to the detector and obtains and stores the next x-ray image at the measured spatial position and angular orientation, and forms a composite image using image data from the first and from the one or more next x-ray images.

The invention relates to a method for identifying barley varieties by SSR (simple sequence repeat) primers. The method comprises steps as follows: extracting DNA of samples to be tested; using 14 pairs of basic core SSR primers and 14 pairs of extended core SSR primers to perform PCR (polymerase chain reaction) amplification; performing gel electrophoresis, modified polyacrylamide gel electrophoresis and silver staining on the PCR amplified product; analyzing an SSR band, wherein the samples to be tested are at least two barley varieties; when the number of different sites of the varieties is larger than or equal to 3, the varieties are judged as different varieties; when the number of the different sites of the varieties is 1 or 2, the varieties are judged as similar varieties; and when the number of the different sites of the varieties is 0, the varieties are judged as suspected identical varieties. The method provided by the invention can be used for identifying the barley varieties to be tested and the known barley varieties, or establishing a barley variety database; the method has advantages of high efficiency, accuracy, low cost and convenient operation; and with the adoption of the method, the authenticity of the barley varieties is effectively monitored, crop varieties are protected, and fake varieties are prevented from entering the market.