After the column is erected, it gives a strong "support point" to the greenhouse.
The rear pillar is an important support point for the rear roof, which carries the entire weight of the rear roof. Once the rear pillars are broken, the load-bearing capacity of the rear roof will be reduced, and maintenance and replacement will be difficult. Therefore, when the greenhouse is built, it must be taken care to prevent the rear pillar from breaking. So what causes the post-pillar column to break, how can it be prevented?
The angle of the post-roofing is determined by setting the angle of 45 to be appropriate. When the post-pillar column angle is too large, the rear roof becomes narrow, which is not conducive to roof walking and agricultural operations. However, if the angle of the pillar is too small, it will affect the lighting of the back wall and the weight of the back cover. In general, the rear pillars can withstand the weight of the rear roof covering at a 45-degree angle, and the lighting angle within the shelter is also good.
After the roof cover avoid moisture, pay attention to the soil viscosity when covering the soil, must be carried out when the soil is dry and loose during sunny days, must not cover the soil when the soil is heavy after the rain, and the soil will fall from the bucket and impact on the building. Excessive force caused the post-rigging columns to break. After the depth of the roof covering should be determined according to the angle of the post-pillar column. If the angle of the rear pillar is large, the amount of earth covering can be appropriately increased. If the angle is small, the amount of earth should be less, so as to prevent the excessive weight of the earth from breaking the column. At the same time, the depth of soil covering should also be adjusted according to the quality of the column.
After the installation of the pillars, the number of reinforcements will usually be increased by 6 to 7 steel rods, one of which is 4 on one side and 2 to 3 on the other. When installing the column after installation, one side of the four steel bars should face the ground, and if the side with less reinforcing bar is down, it is easy to break. Some post-creation columns are designed to be flat on one side with a lot of reinforcement, and one section on one side with a small face, in order to avoid installation errors, and now most of the rear pillars are flat on both sides. Therefore, when installing, be sure to look at the number of bars and install them correctly.
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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