36results about How to "Research results are accurate" patented technology

The invention relates to an identification method of pathogenicity of fusarium oxysporum sesame special type bacterial strain to host sesame, which comprises the following steps: (1) pretreatment of seeds; (2) bacterial inoculation culture of the seeds: conidium suspending liquid is taken and poured into sterile vermiculite with the volume to be two times that of the conidium suspending liquid, vermiculite mixed with pathogenic bacteria and sterile soil are mixed evenly according to the volume ratio of 1:3 and charged in a split mode, sterile sesame seeds exposing white are sown in a paper bowl, 10 particles are evenly placed in each bowl, each variety is repeated and planted for three times, mixed soil for mixing bacteria is lightly covered on the surface of the seeds and placed into an artificial climate box for light and dark alternated culture for 12 hours per day at 25 DEG C and at the humidity of about 80%, and other culture conditions are the same with equal-volume sterile water as comparison; and (3) performing pathogenicity identification. The identification method is simple, convenient and easy to implement, pathogenicity of the pathogenic bacteria is stable, results are reliable, repeatability is good, and the fact that whether fusarium oxysporum sesame special type bacterial strain has pathogenicity on sesame seedlings and pathogenic strength of the fusarium oxysporum sesame special type bacterial strain can be accurately reflected.

The present invention relates to the technical field of insect feeding, in particular to a feeding method of Chilo suppressalis. The eggs are placed at the intersection of the leaf sheath and the main stem of the first rice stalk, and the hatched larvae drill into the first rice stem from the intersection. The stalks are fed; when the larvae develop to the 5th instar, the larvae are taken out from the first rice stalk and raised on the second rice stalk; The fresh rice stalks at the culm jointing stage or after the round culm jointing stage; the second rice stalks are knotted round culm jointing stages or fresh rice stalks after the round culm jointing stage. The raising method of the rice stem borer of the invention has the advantages of high survival rate of larvae and pupae, convenient finding of pupae, suitable for research, and large-scale breeding.

The invention relates to a device for collecting an oil component from liquid carbon dioxide containing the oil component and extraction equipment using the same. The device comprises a first collection assembly which is used for primary collection of an oil component in carbon dioxide containing the oil component, and a second collection assembly which is arranged in the downstream of the first collection assembly, is communicated with the first collection assembly and is used for refined collection of an oil component in gas collected by the first collection assembly. The first collection assembly collects a C5-C9 oil component and a C10 or more C oil component. The second collection assembly collects a C1-C4 oil component and a trace amount of a C5-C9 oil component. The device can completely collect an oil component dissolved in carbon dioxide so that accuracy of carbon dioxide supercritical extraction and analysis of a rock sample is greatly improved.

The invention discloses a rock mechanics test system and a test method with adjustable loading stiffness. The test system comprises a loading unit, which is used for loading a rock specimen; a variable stiffness unit, which is used for adjusting the stiffness of the loading unit during the loading process; The monitoring unit is used to monitor the pressure change of the rock specimen and the stiffness change of the loading unit, and generate monitoring data; the data analysis unit is connected with the loading unit, the variable stiffness unit and the monitoring unit respectively, and the data analysis unit is used to control the loading unit Loading, and the data analysis unit is also used to process and analyze the received monitoring data, and control the variable stiffness unit to adjust the stiffness of the loading unit according to the analysis result. The invention makes the rock mechanics test more close to the actual production conditions, and meanwhile, the invention not only fills the blank in this field at home and abroad, but also has the advantages of simple test operation and more accurate research results.

The invention discloses a climate simulation system for researching the storage stability of a liquid petroleum product. The system comprises a temperature adjusting device, a humidity adjusting device, a fresh air device, an air circulating device and a salt spray adjusting device; the temperature adjusting device which comprises an air-cooled single-stage double-compressor refrigerating unit and a stainless steel electrothermal tube is used for adjusting the temperature of the storage environment of the liquid petroleum product; the humidity adjusting device comprises a relational expression humidifier; and the salt spray adjusting device comprises a salt solution tuner and a high pressure sprayer; a heat exchanger is used for exchanging heat of air entering the storage environment of the liquid petroleum product with heat discharged from the storage environment of the liquid petroleum product; and the air circulating device is used for circulating air in the storage environment of the liquid petroleum product. By adopting the system disclosed in the invention, the storage environment of the liquid petroleum product can be adjusted to make the environment of the liquid petroleum product in a laboratory coincide with the practical case outside the laboratory, thereby the research result can be accurate.

The invention belongs to a method for static timing analysis of thermal stress circuits containing through-silicon vias, which includes the following steps: (1) determining the type of through-silicon vias used in the circuit; The physical parameters of the transistor; (3) using the mathematical model of stress to obtain the radial stress and hoop stress of each layer material of a single TSV in the cylindrical coordinate system; (4) solving the boundary conditions of each coefficient in the stress expression; (5) Convert the stress in the cylindrical coordinate system to the stress in the Cartesian coordinate system; (6) Obtain the total thermal stress distribution caused by multiple TSVs according to the linear superposition criterion; (7) Calculate different channel directions (8) Add the change of carrier mobility to the gate-level netlist of the circuit, and run PrimeTime for static timing analysis under timing constraints to obtain the longest circuit Path delay and timing margin variation.

The invention discloses a small internal combustion engine crankshaft system simulation device and a simulation method thereof. The device comprises: an installation platform, a servo motor, a driving crankshaft, a left connecting rod, a double-headed cylinder, a right connecting rod, a driven crankshaft and a flywheel; a servo motor Both ends of the main journal of the driving crankshaft are installed on the installation platform through bearings and bearing seats; the main journal of the driving crankshaft is coaxially connected with the output shaft of the servo motor, and the two can rotate synchronously; The connecting rod journal of the driving crankshaft is hinged with one end of the left connecting rod; the other end of the left connecting rod is hinged with the main piston rod of the double-headed cylinder; the two ends of the main journal of the driven crankshaft are installed on the installation platform through bearings and bearing seats; The main journal of the driven crankshaft is coaxially connected with the flywheel, and the two can rotate synchronously; the connecting rod journal of the driven crankshaft is hinged with one end of the right connecting rod; the other end of the right connecting rod is hinged with the slave piston rod of the double-headed cylinder; the present invention It can truly simulate the crankshaft system of an internal combustion engine and meet the requirements of equivalence.

The invention discloses a method for estimating the toxicity contribution rate of metal nanoparticle ions and a nano effect and belongs to the field of artificial metal nanoparticle toxicity effect evaluation. Hemolymph cells of shellfish in an ocean are selected as an experimental subject, cell culture mediums containing metal ions or nanoparticles are set as two experimental groups according to the content of metal ions released by the metal nanoparticles, and the toxicity contribution rates of an ion effect and the nano effect to the metal ions and the nanoparticles are researched. The nano effect and the ion effect on the metal nanoparticles are researched for the first time, the hemolymph cells of the immune system of a benthic organism in the ocean are selected as the experimental subject, and the cells are very sensitive to stress of pollutants; besides, multiple physiological indexes are selected, the research level is pushed to the molecular immune level, and the effectiveness and the accuracy of toxicity effect evaluation on artificial metal nanoparticles are improved.

The invention discloses a method for detecting the anti-irritation properties of an anti-irritation product, comprising step 1) obtaining an image of the skin or a skin mimic after patch treatment, wherein the patch is coated with the anti-irritation product and Gel composition of irritants; step 2) Measure erythema characteristic values ​​in images of said skin or skin mimic. The invention also discloses a detection method for the irritation of cosmetic raw materials, a gel composition and a patch. The detection method provided by the present invention not only has good repeatability, but also can score the results of antagonistic stimulation in a more detailed manner, while avoiding the influence of human subjectivity, so as to evaluate the antagonistic stimulation effect of antistimulant products more accurately and objectively.

The invention relates to a method for assessing the pollution level of microplastics in marine sediments, belonging to the field of risk assessment of marine pollutants. The present invention takes sea sediments as the experimental object, and at the same time advances the evaluation system from a single-dimensional analysis of abundance / composition to a multi-dimensional (abundance, type, and diversity) comprehensive evaluation, and the overall response to microplastic pollution in different survey areas Compared with the overall response value of microplastic pollution, the higher the overall response value of microplastic pollution, the higher the pollution level of microplastics. The method of the invention has good performance in estimating and comparing the microplastic pollution levels of sediments in different sea areas, and the results have good stability, high repeatability and strong comparability.

The invention relates to a culture method for plant seedlings. The plant seedlings are cultured by a ventilated root division culture device, the side surfaces of two culture bowls of the device are in butt joint, a cover plate and a culture plate are arranged on the two culture bowls, culture holes are formed in the culture plate, and vent holes are formed in the two sides of the culture holes. The culture method comprises the followings steps: the plant seedlings of 3 days are taken and cultured in a Hoagland's nutrient solution with the concentration of 50 percent for 2 days then in a Hoagland's nutrient solution with the concentration of 100 percent for 12 days, the plant seedlings growing consistently are taken, the stems of the plant seedlings are wrapped by nutrient cotton and fixed in the culture holes of the culture plate, the roots of the plant seedlings are divided into a group A and a group B, the group A is put into the culture bowl containing the Hoagland's nutrient solution, and the group B is put into the culture bowl containing a nutritional deficiency nutrient solution; the pH values of the nutrient solutions are regulated to 6 at 8 o'clock in the morning and 15 o'clock in the afternoon; the nutrient solutions are changed every other three days; and after 4-12 days, the plant seedlings are taken out. The operation is simple, and the personal errors are reduced, so that the research result is more accurate, the culture time is saved, and the working efficiency is improved.