On September 1st, Baidu 2016 World Congress was held in Beijing. The conference was based on the theme of “artificial intelligenceâ€. At the meeting, Baidu’s founder, chairman and CEO Li Yanhong showed the Baidu artificial intelligence results to the outside world for the first time. "Baidu Brain" and announced the opening of its core competencies and underlying technologies to developers, entrepreneurs and traditional companies.
According to Li Yanhong, Baidu’s brain has built a super-large-scale neural network with tera-scale parameters, hundreds of billions of samples, and hundreds of billions of character training, which can simulate the working mechanism of the human brain. At present, Baidu's brain mainly includes three aspects, namely algorithms (neural network, parameter and sample training) and computing power (server and GPU cluster), as well as big data (web materials, search data, image video data and positioning data). Nowadays, the IQ of Baidu's brain has advanced development, and even surpasses human beings in some capabilities.
At the meeting, Li Yanhong explained in detail the cutting-edge progress of Baidu's brain in the fields of speech, image, natural language processing and user portrait. At present, Baidu's brain speech synthesis daily request volume is 250 million, and the speech recognition rate is 97%. The powerful voice ability can not only help a young salesperson to quickly become a skilled and capable gold medal sales, but also synthesize the sound of a generation of superstar Leslie Cheung, and realize the "space dialogue" with fans 13 years later.
Processing high-throughput samples, intelligent reuse for large-capacity publishing, work surface: 200cm, 8 sample injection needles, 12 temperature-controlled incubation positions, 12 room temperature incubation positions, 32 plate storage positions, Sunrise microplate reader, HydroFlex plate washer, up to 512 specimens, sequential loading of samples, reagents, microplates Parallel loading of up to 6 plates for fast dispensing.
The automatic enzyme immunoassay analyzer is based on the principle that the enzyme and the substrate can produce a color reaction, the absorption lines of different substances have different characteristics, and strictly abide by the Lambert-Beer law, quantitative and qualitative analysis of substances. instrument. The method of analyzing the content of various enzymes such as antigen or antibody generally mainly adopts colorimetric method. In practice, spectrophotometry is the basic working principle of an automatic enzyme immunoassay analyzer. The light emitted by the light source lamp becomes a beam of monochromatic light after passing through a filter or a monochromator. The monochromatic light beam passes through the sample to be tested in the microtiter plate, and part of the monochromatic light beam is absorbed by the sample and reaches the photodetector. The intensity of the light signal projected on it is converted into the magnitude of the electrical signal by the photodetector. This electrical signal is processed by pre-amplification, logarithmic amplification, analog-to-digital conversion, etc., and then sent to the microprocessor for data processing and calculation, and the test results are output by the display and printer. The microprocessor completes the movement in the X and Y directions of the mechanical drive through the control circuit.
The automatic enzyme immunoassay analyzer adds the sample to the microwells of the pre-coated antigen or antibody microtiter plate, washes after the reaction, removes the unseparated ligand, then adds the enzyme isolate, after incubation, washes again , remove the unseparated compound, and then add the enzyme substrate, after the reaction, the colored final product is formed, and the stop solution is added to stop the reaction. The absorbance of each microwell of the microtiter plate is read by the wavelength that has been set by the spectrophotometer. The concentration value of the analyte in the sample is calculated by the absorbance value of the sample and the standard curve, so that the quantitative result can be obtained, or the absorbance of the sample is compared with that of the standard product, so that the positive or negative qualitative result can be obtained.
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