150results about How to "The technical method is simple" patented technology

The invention discloses a three-dimensional directional well trajectory design and control parameter discrimination method. The method includes: via relative coordinates of a target in a target horizon with respect to a tapered plane arc trajectory full-curve tangent midpoint, establishing discrimination criteria, and performing discrimination and valuing on a change amount of a design target hitting azimuth with respect to an azimuth of an arch trajectory start point; discriminating and valuing a design tool face angle via overlap criteria of values obtained by calculating through double formulas of tool face angle; according to the tool face angle obtained by discrimination, verifying targeted design parameters and targeted coordinates via trajectory backward inversion. Compared with traditional target parameter discrimination methods, the method helps prevent the problems that discrimination by directly using target closure azimuth difference causes 0-degree azimuth ambiguity and discrimination of the tool face angle according to functional rules of 0-degree to 360-degree quartering of different tool face angles may has deviations; the method is simple and highly applicable.

The invention relates to a small water body breeding method for litopenaeus vannamei and belongs to the technical field of aquatic product breeding. The method includes six steps of seawater treatment, larva placing, environmental control, feedstuff adding, water quality adjusting and controlling and quality inspection. The breeding method is simple, convenient to operate, and suitable for breeding high-quality and healthy litopenaeus vannamei seeds, the appearance of bred seeds is free from malformation, neat, uniform, and the litopenaeus vannamei can normally and forcefully swim and ingest food, good in property against the current and capable of sensitively reacting.

The invention relates to an antibiotic-free premix for a growing rex rabbit. The antibiotic-free premix comprises the following components in percentage by weight: 3%-8% of mannan oligosaccharide, 2%-4% of bacillus subtilis, 2%-4% of lactobacillus, 2%-4% of acid proteinase, 2%-4% of amylase, 2%-4% of cellulase, 1%-3% of garlicin, 3%-8% of fromadriamycin, 0.5%-1.5% of ethoxyquin, 1.5%-3% of robenidine hydrochloride, 2%-8% of ferrous sulfate, 2%-5% of copper sulfate, 0.2%-1% of manganese sulfate, 1.5%-3% of zinc sulfate, 0.02%-1% of potassium iodide, 0.1%-0.2% of sodium selenite, 0.15%-0.25% of cobalt chloride, 10%-20% of dicalcium phosphate, 5%-12% of calcium carbonate, 2%-4% of multivitamin, 1%-3% of L-lysine hydrochloride, 2%-4% of DL-methionine and the balance of defatted rice bran. The antibiotic-free premix disclosed by the invention can promote the establishment of the intestinal function of the growing rex rabbit, improve the intestinal health and enhance the digestion utilization ratio of growing rex rabbit feeds and is convenient to use by users.

The invention discloses a pleurotus nebrodensis storage logistics preservation method. The method comprises the following steps of: performing grading treatment on picked pleurotus nebrodensis, and simultaneously finishing the pleurotus nebrodensis bodies; containing the finished pleurotus nebrodensis bodies in a ventilated plastic basket and moving the basket to a cool well-ventilated place for air drying, and packaging with food packaging paper for later use; performing dehumidifying treatment and moving in a refrigerator for full precooling; packaging the pleurotus nebrodensis bodies into polyethylene silicone window preservation bags; and containing the pleurotus nebrodensis bodies in transfer baskets, shelving for storage, and keeping the temperature constantly and periodically checking in the storage period. In the process of discharging transportation and sales after the pleurotus nebrodensis is stored, if the marketing distance is short, the pleurotus nebrodensis bodies are packaged in preservation boxes, and during long-distance transportation, pleurotus nebrodensis bodies are transported by a refrigerator track. By combining the selected high-quality pleurotus nebrodensis with low-temperature and spontaneous controlled-atmosphere green pollution-free complementary measures to store the pleurotus nebrodensis for 50 days, the pleurotus nebrodensis bodies are white in color, fresh and tender in texture, good in mouthfeel, fresh and free from peculiar smell, meet the standard indexes of commodities and have the commodity rate of 95 percent.

The invention discloses a method for manually ageing rice seeds, which belongs to the technical field of seed detection. The method comprises the following steps: treating the rice seeds at different temperatures under the condition that the relative humidity is 100 percent to accelerate ageing, and observing the influence of manual ageing on the sprouting rate of the seeds and the growth of seedlings after the treatment. The experiment results show that the optimal manual ageing conditions of the rice seeds comprise that the temperature is 46.5 DEG C and the relative humidity is 100 percent. The sprouting rate of the aged seeds begins to decline, the growth rate and the seedling emergence uniformity are reduced, the abnormal seedlings are increased, and finally the seeds lose the capability of sprouting. The manual ageing method provided by the invention can detect the storage capability and deterioration resistance of the rice seeds in short time. The method is scientific and reliable, is simple to operate, does not need complex equipment, and is convenient for popularization and application.

The invention discloses an establishment technology of a hemsleya amabilis tissue culture system. Hemsleya amabilis is a cucurbitaceous plant and tuberous roots are dried. The hemsleya amabilis is produced in Yunnan, Sichuan, Guizhou, Guangxi and the like. The hemsleya amabilis is dug when leaves become yellow in late autumn; over-ground parts and silt are removed; then the hemsleya amabilis is washed, sliced or not, and dried in the sun. The tuberous roots are of an irregular round shape or oval shape and are of a slight tortoise shape in the vertical direction; the diameter of the large tuberous roots can reach 20cm. Peels are brown yellow or grey brown and are slightly rough and certain peels have concave caudex traces; sections of the peels are light white or grey brown. The hemsleya amabilis is firm and is almost powdery. The hemsleya amabilis has slight odor and a slightly bitter taste. The reproduction speed and the scale are improved by utilizing a plane tissue culture technology, so that industrialized production of hemsleya amabilis germchits is realized. Hemsleya amabilis tissue culture regenerated plants are successfully obtained by taking stems with buds as explants through steps of inducing, reproducing, rooting, carrying out seedling exercising and transplanting and the like, and a systemic hemsleya amabilis tissue culture plant regeneration system is established. The reproduction coefficient is high, the seedling rate is high and the benefits are great.