31results about How to "Will not affect the experimental results" patented technology

The invention provides an AB test method, a system, a device and a storage medium. The method comprises the steps: constructing a plurality of experiment layers, wherein each experiment layer comprises at least one experiment; obtaining experiment configuration data of experiment configuration personnel, wherein the experiment configuration data comprises experiment flow distribution data, and theexperiment flow distribution data comprising flow proportions occupied by each experiment in each experiment layer; obtaining a user request, and distributing a target experiment to which the user request enters in each experiment layer according to the experiment flow distribution data; and distributing the user request to the target experiment in each experiment layer. By the adoption of the scheme, AB testing is conducted based on the layered experiment theory. The experiment flow of different experiment layers is orthogonally distributed. Experiment results cannot be affected. Multi-layerexperiments can be conducted at the same time, and the increasingly-large service flow requirement is met.

The invention provides a mixed paraffin, a method for storing a PCR reagent by adopting the mixed paraffin, and a PCR reagent box containing the mixed paraffin; the mixed paraffin is formed by the uniform mixing of liquid paraffin and solid paraffin after melting, wherein the solid paraffin is selected from the solid paraffin with the melting point higher than 50 DEG C, and the ratio between the solid paraffin and the liquid paraffin is 1:4 to 1:12(w/v). The melting point of the mixed paraffin is between 27 DEG C and 38 DEG C, the mixed paraffin is used for isolating enzyme and other components in PCR liquid, and the melting point is moderate, thus not influencing the effect of fluorescent quantitative PCR. Furthermore, the mixed paraffin in the embodiment of the invention has simple production method and low cost.

The invention belongs to the technical field of animal experiment devices, and discloses an experimental animal anesthetization fixing device. The experimental animal anesthetization fixing device isprovided with an anesthetic table, the two ends on the lateral side of the anesthetic table are fixedly provided with limb fixing devices through nuts, automatic winding devices are installed in the limb fixing devices through screws, fixing grooves are formed in the upper ends of the limb fixing devices, the surfaces of the automatic winding devices are wound with fixing bands, and the upper endsof the fixing bands penetrate out of the fixing grooves. The front end on the upper portion of the anesthetic table is fixedly provided with a head fixing device through nuts, a separation net is embedded into the surface of the anesthetic table, a separation layer is arranged in the anesthetic table, and a movable box is clamped into the separation layer. By means of the experimental animal anesthetization fixing device, the length of the fixing bands can be conveniently adjusted; through an abdominal fixing band with an opening, the body can be effectively fixed while the operation experiment of the animal abdomen is not affected; when the separation net is embedded into the upper surface of the anesthetic table, animal feces and other leaked liquid can be discharged into the movable box in time, and later management is facilitated.

The invention discloses a strain and acoustic wave test device and method for a high-temperature rock sample; the strain and acoustic wave test device mainly comprises an acoustic wave transmitting terminal, an upper bearing shaft, a corundum ejector pin, an upper slide plate, a lower slide plate, an insulation shell, a carbon fiber sleeve, a rock sample, a lower bearing shaft, an acoustic wave receiving terminal, a lower copper electrode, pearl powder, a temperature sensor, a transformer, a temperature-acoustic wave control box, an oscilloscope, an upper copper electrode, and a data collection and processing system; the method comprises: (1) mounting the device on a uniaxial mechanical tester stroke; (2) heating the rock sample; (3) performing compression test; (4) acquiring a difference between the upper slide plate and the lower slide plate which is an axial strain value; (5) transmitting acoustic wave from the acoustic wave transmitting terminal, receiving by the acoustic wave receiving terminal after the wave passes the rock sample so as to obtain an acoustic wave temporal difference of the rock sample; (6) collecting data, and storing. The device and method according to the invention have the advantages the principle is reliable, the device and method are simple to perform, mechanical properties of rock are acquired in real time, and the device and method have a promising market application prospect.

The invention relates to a visualized test bench for testing hydraulic valve performance, relating to the field of hydraulic valve performance testing devices, and aiming at solving the problems that the condition of runner flow field of a valve cannot be effectively known, and the experimental valve pressure flow condition is uncontrollable during the experimental process when the test bench in the prior art is used. The visualized test bench for testing hydraulic valve performance comprises a fuel tank, a hydraulic pump No. 1, a pressure gauge, a speed regulating valve, a pilot-type constant pressure reducing valve, a pressure sensor No. 1, a visualized experimental valve, a pressure sensor No. 2, a pilot type relief valve, a flow sensor, a temperature sensor, an electromagnetic reversing valve, a cooler, a hydraulic pump No. 2 and a heater. The visualized test bench is mainly used for the hydraulic valve performance testing process, and an operator can conveniently observe the condition of the runner flow field when the valve is working.

The invention discloses a waste gas treatment system for detecting heavy metals in food. The system comprises a waste gas cavity, wherein an adsorption chamber is formed in the upper part of the waste gas cavity, the bottom of the waste gas cavity is connected with a reaction ball chamber, a plurality of calcium oxide adsorption layers are arranged in the adsorption chamber, each calcium oxide adsorption layer comprises a fiber skeleton and calcium oxide applied to the fiber skeleton, and the fiber skeletons are wound into a spiral line structure by a fiber bundle; a conical chamber is formed in the lower part of the waste gas cavity, and the bottom tip end of the conical chamber is in sealed communication with the reaction ball chamber; the system further comprises an air circulation device which comprises a pipe, one end of the pipe is communicated with the upper part of the adsorption chamber, the other end extends into the reaction ball chamber, an air pump is arranged on the pipe, and the pipe is further connected with a first branch pipe and a second branch pipe. Adsorption and digestion are performed in a closed environment in a fully sealed form, so that the waste gas cannot leak, and little harm is caused to the environment and human bodies. The reaction digestion condition can be clearly observed through the waste gas chamber and the reaction ball chamber which are made of transparent glass.

The invention discloses a zero-damage injection method of immune reaction allogenes of a veneridae shellfish. The method comprises the following steps that an injector with a syringe needle is prepared, a pathogen is sucked by the injector, the veneridae shellfish to be injected is prepared, an intersection point of the tail end of the outer ligament and the edge of the shell of the veneridae shellfish is found out, the intersection point serves as a collection point, the veneridae shellfish to be injected is stably held by one hand, the point of the syringe needle of the injector is aligned with the collection point by the other hand, the included angle between the point of the syringe needle and the tangent line of the edge of the shell is made to range from 30 degrees to 60 degrees, the point of the syringe needle is sent to the soft portion in the veneridae shellfish to be identified through the collection point, and the pathogen is injected into the veneridae shellfish. The injection method can be used for conducting a shellfish infection immunity test by injecting the pathogen into the shellfish on the premise that the shell of the shellfish is not damaged.

The invention relates to a method for measuring the transpiration volume of herbaceous plants in a vegetative propagation stage. The technical problems of tedious operation and low precision of present methods for measuring the transpiration rate of herbaceous plants are solved. The method comprises the following steps: 1, sealing the bottom of a flowerpot and the middle and lower portion of the sidewall of the flowerpot; 2, sealing soil surface; and 3, weighing the mass before and after photosynthesis, and calculating a mass difference. The method has the following advantages: the previous problems of difficult measurement of the transpiration volume of herbaceous plants and inaccuracy of the result obtained through converting other indexes are solved; the method allows the daily transpiration volume of herbaceous plants to be simply and accurately measured, and adapts to measurement of the transpiration volume of large-batch field different species; and the size of the flowerpot can be adjusted to adapt the size of the measured plants through the measurement method, and the measurement precision is realized through selecting scales with different precisions according to practical needs. The method is used to measure the transpiration volume of herbaceous plants in the vegetative propagation stage.

The invention discloses an accurate quantitative sampling device for a pathology department. The accurate quantitative sampling device comprises a bottom plate, a first vertical rod, a supporting rodand a fixing plate, wherein a second vertical rod is mounted on the first vertical rod; a supporting rod is mounted on the second vertical rod; a ladle, a sampling needle cylinder, a sampling dropperand a medicine powder sampler are mounted on the supporting rod; a fixing sleeve is mounted on the bottom plate; a waste sample cavity and a clean water cavity are formed in the fixing sleeve; a cleaning machine is mounted at the top end of the bottom plate; a water pump is mounted on the inner wall of the cleaning machine; a connecting pipe is mounted at the output end of the water pump; nozzlesare uniformly mounted on the connecting pipe. The accurate quantitative sampling device for the pathology department is capable of accurately sampling the samples, and has significances on research experiment of pathology. The solid sampler and the liquid sampler are arranged on the device and can be simultaneously used, and time of replacing different types of samplers by the doctor is shortened.Due to the arrangement of a self-cleaning system, the device can be cleaned after sampling completion.

The invention relates to an animal fixing box for pharmacological teaching. The animal fixing box comprises a box body (1), wherein a head perforation (3) is arranged in the box body (1); a containingbox (11) for containing animal bait is arranged on the box body (1); a head fixing mechanism, a body fixing mechanism and a front limb fixing mechanism and a rear limb fixing mechanism are further mounted on the box body (1); and a controller (29) is further installed on the box body (1), and the animal fixing can be realized under the control of the controller (29). An animal can be firmly fixed, and the fixing process is automatically realized.