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111results about How to "Easy to compare and observe" patented technology

Nuclear reactor fuel assembly bottom nozzle hydraulic scouring test system and test method thereof

The invention relates to a nuclear reactor fuel assembly bottom nozzle hydraulic scouring test system and a test method thereof. The system comprises: a circulation system composed of a double suction pump and a closed loop pipeline; a test segment module composed of a foreign matter dropping tube segment, a test segment, a foreign matter collector and relevant devices; a flow field information acquisition module composed of a PIV device, flow field processing software and a local area network computer; an image acquisition module composed of a high speed camera and a local area network computer; an adjusting and monitoring module before pump, composed of a water tank, a filter, and relevant pipelines and meters; a cooling module composed of a cooling pump, a cooling tower, a condenser, a closed pipeline, a valve and a meter; and a remote control module composed of all electric valves, water pumps and relevant devices through a programmable logic controller. The invention also provides the test method of the system. The system and the method can meet needs of large-flow reactor bottom nozzle hydraulic scouring visual test researches, and also can realize simple and rapid adjustment of system parameters.
Owner:XI AN JIAOTONG UNIV

Method for evaluating chlorine dioxide release rate

The invention relates to the technical field of chlorine dioxide disinfection sterilization, in particular to a method for evaluating a chlorine dioxide release rate. The method provided by the invention comprises the following steps: firstly forming a colorimetric card showing one-to-one correspondence between chlorine dioxide release rates and color spots, then detecting color spots of to-be-evaluated samples in the same test environment and comparing with the colorimetric card, thus the chlorine dioxide release rates of the to-be-evaluated samples can be directly read according to the colorimetric card. The method provided by the invention has the advantages that the to-be-evaluated samples only need to be placed in a test container for preset time after a color spot-release rate colorimetric card is formed, then chromogenic reaction is performed by using wet potassium iodide test paper, and reading is performed by comparing the colorimetric card, so that operation is simple and easy; and especially when the chlorine dioxide release rate of a to-be-evaluated sample needs to be tracked for a long time, only simple potassium iodide test paper chromogenic reaction and comparison with a pre-prepared color spot-release rate colorimetric card need to be performed, so that evaluation work is greatly simplified and evaluation efficiency is improved. The method provided by the invention is easy to operate, low in cost and quick in result and is applicable to popularization and application.
Owner:广州超威生物科技有限公司

Multi-station variable-angle removing template for die spotting machine

The invention relates to a multi-station variable-angle removing template for a die spotting machine. The die spotting machine is composed of a rotating disk rotating mechanism and a template flip mechanism, and comprises rotating disk body and a removing flip template; the disk surface of the rotating disk body is provided with locking blocks around the disk center; the disk center of the rotating disk body is provided with a center rotating shaft connected with the removing template; positioning locks are arranged on the removing template; a jacking oil cylinder and a driving motor are arranged in the removing template; locking oil cylinders are arranged on the four corners of the lower surface of the removing flip template, and the lower surface is connected to a removing flip template drive pin which is connected with a removing pedestal; the removing flip template is provided with symmetrical double-ear pedestals; a flip oil cylinder connecting pin is arranged in ear-holes of the double-ear pedestals; the flip oil cylinder connecting pin is connected with a flip oil cylinder piston rod; and the flip oil cylinder is fixed on the removing pedestal obliquely. According to the multi-station variable-angle removing template for the die spotting machine, the rotating disk rotating mechanism is arranged on the removing template, so that the removing template is capable of switching stations; the template flip mechanism is arranged on the removing template, so that the removing template is capable of switching angels.
Owner:宁波顺兴机械制造有限公司

Synthetic mold shifting two-plate type closing machine

The invention relates to a synthetic mold shifting two-plate type closing machine. The synthetic mold shifting two-plate type closing machine comprises a lower seat, an upper seat and a lower mold shift-out seat, wherein pull rods are vertically mounted at four top corners of the lower seat, the four pull rods are connected with the upper seat in a sleeving and sliding manner, quick oil cylinders connected with the lower seat are mounted on the outer sides of the top corners of the upper seat, brake nuts are mounted at the connecting parts of the upper ends of the upper seat and the pull rods, two brake nuts on two sides are connected through a brake synchronization device, a lower mold shift-out seat and a turnover mold plate shift-out seat are respectively mounted on two adjacent side edges of the lower seat, a moving lower mold plate and a turnover mold plate moving seat are respectively mounted on the lower mold shift-out seat and the turnover mold plate shift-out seat in a sliding manner, and a plurality of high pressure mold locking cylinders are vertically mounted inside the lower seat. The two-plate type closing machine provided by the invention dispenses with a traditional three-plate type structure, the height of a machine body is lowered, the cost is lowered, and a flexible mold closing structure is added, so that pressure among mold parting surfaces is even.
Owner:宁波顺兴机械制造有限公司

Device and method for influencing aquatic plant growth by water level, water depth, water quality and bottom mud changes

The invention discloses a device and a method for influencing aquatic plant growth by water level, water depth, water quality and bottom material changes. The device comprises cross-shaped planting troughs, a fixed bracket and a floating bracket, wherein each cross-shaped planting trough comprises a blackboard layer positioned at the outer part and an organic glass layer positioned on the inner side of the blackboard layer; the organic glass layers are spliced and formed into the cross-shaped planting troughs of which the upper parts are open; the blackboard layer is positioned on the outer side of the organic glass layer, and is tightly and fixedly jointed with the organic glass layer through rivets. According to the invention, organic glass is adopted to make the planting troughs, the growth condition of the submerged plant root system can be clearly observed, the submerged plant root system is not hurt, and further observation of the growth condition of the submerged plant root system is facilitated; the device adopts the cross-shaped structure, and is relatively stable in water; the two groups of same planting troughs are respectively hung under the fixed bracket and the floating bracket, so that the influence on plants by the water depth change can be easily measured; the planting troughs are filled with different bottom materials, when the planting troughs are hung on a cross beam of the fixed bracket or the floating bracket, the influence on the plants by different bottom mud can be easily measured, and influence on plants by the water quality can be measured when the planting troughs are put into different water bodies.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY

Paraffin sectioning method for Corydalis saxicola Bunting stems

The invention discloses a paraffin sectioning method for Corydalis saxicola Bunting stems. The paraffin sectioning method comprises the following steps: sample fixation, dehydration, transparency treatment, wax dipping, embedding, sectioning and slice expansion, dewaxing, dyeing and slice sealing. The paraffin sectioning method specifically comprises the following steps: before the transparency treatment, putting dehydrated Corydalis saxicola Bunting stems into a 0.8%-1.2% sarranine solution, and carrying out dip dyeing for 8-12 hours; after the dewaxing, carrying out rehydration on a slide carrying the Corydalis saxicola Bunting stems, putting the Corydalis saxicola Bunting stems into an alcohol solution, carrying out color separation, simultaneously adding acetic acid into the alcohol solution for the color separation in a volume ratio of 1 to (800-1000), finally, putting the Corydalis saxicola Bunting stems into a 0.8%-1.2% fast green solution, and carrying out dyeing for 10-20 seconds. By virtue of the paraffin sectioning method disclosed by the invention, a clear Corydalis saxicola Bunting stem structure can be sectioned, a specimen can be stored for a long time for use, is a permanent microscopic slide specimen and can be applied to microscopic identification of Corydalis saxicola Bunting medicinal materials for market normalization.
Owner:GUANGXI BOTANICAL GARDEN OF MEDICINAL PLANTS

Automobile part surface defect detection device and detection method thereof

The invention discloses an automobile part surface defect detection device and a detection method thereof. The device comprises a base, wherein a motor is fixedly connected with the center of the bottom end of the base, slide rails are fixedly mounted at the top end of the base, a detection table is rotationally connected onto the slide rails, the bottom end of the detection table is fixedly connected with a rotating shaft, the bottom end of the rotating shaft penetrates through the base and is rotationally connected onto the motor, the top end of the base is also fixedly connected with a darkbox, the top wall of an inner cavity of the dark box is fixedly connected with a seat frame, multiple LED lamps and multiple cameras matched with the detection table are uniformly arranged on the seat frame, and a touch display screen is mounted on one side of the top end of the dark box; workpieces are directly placed on the detection table, then, under irradiation of the LED lamps, the camerasshoot the workpieces, pictures are directly displayed by the touch display screen, a worker can operate the touch display screen to amplify and observe details of the workpieces more carefully, so that the workpiece detection quality can be substantially improved, and discharge of scratched workpieces can be reduced to the greatest extent.
Owner:南京捷思汽车科技有限公司

Method for observing DRG and spinal cord structure of animal, and recording spinal cord electrical activities of animal

The invention relates to a method for observing the DRG and spinal cord structure of an animal, and recording spinal cord electrical activities of the animal. The method comprises the following steps: (1) a DRG operation; (2) a DRG virus injection; (3) an operation for simultaneous observing the spinal cord side axon and the DRG; (4) an operation for observing the dorsal axon; (5) a spinal operation for inserting potential difference monitoring electrodes; (6) imaging. The method is used for observing the comparison between the dorsal axon and the ventral axon of the animal as well as the spinal cord electrical activities, so that repeated operations during the imaging can be avoided, the pain and pressure suffered by a tested animal can be relieved, the spinal cord side of the animal can be observed, a comparative research on the motor neuron axon and the sensory neuron axon of the animal can be achieved, and the spinal cord dorsal side of the animal can be observed when the animal is sober; through the adoption of the method, all-directional connection of the whole nerve system can be achieved, researches on the structure and function operating mechanism of the whole nerve system can be promoted, and a feasible method for integrated researches and analysis of sleeping, learning and other animal behaviors can be provided.
Owner:张金辉 +4

Teaching demonstration device for turbidity sediment experiment and teaching method of teaching demonstration device

ActiveCN110660305AFine graspEnsure rigorEducational modelsSoil scienceTurbidity
The invention provides a teaching demonstration device for a turbidity sediment experiment and a teaching method of the teaching demonstration device, and relates to an experimental demonstration device. A water tank body comprises water tanks A (6) and water tanks B (9) which are arranged oppositely in the vertical direction. According to the teaching demonstration device for the turbidity sediment experiment, four blending formulas for water, mud and sand content of sedimentary turbidity current are provided according to the characteristics of four types of sedimentary turbidity current including gravel-rich type sedimentary turbidity current, sand-rich type sedimentary turbidity current, sand-mud mixed type sedimentary turbidity current and mud-rich type sedimentary turbidity current, the geological characteristics of each geologic sedimentary turbidity current are distinguished in a refined manner, the movement characteristics of each type of sedimentary turbidity current are comparatively demonstrated by the two water tanks with adjustable slope, the turbidity current flow rate is adjusted according to size and length of the slope, then sediment discharge in the turbidity current is observed, the geological knowledge of turbidity sediment is obtained, strictness and completeness of experimental operation are guaranteed, and students are helped to master the geological turbidity sediment related knowledge comprehensively and finely.
Owner:YANGTZE UNIVERSITY

Frequency spectrograph and method for measuring low-level signal through trace of frequency spectrograph

The invention provides a frequency spectrograph and a method for measuring a low-level signal through a trace of the frequency spectrograph. The frequency spectrograph comprises a packaging shell; anintegrated circuit board is arranged in the packaging shell and includes a main control circuit board and an auxiliary control circuit board; the auxiliary control circuit board is electrically connected with the main control circuit board through a flat cable; and the main control circuit board mainly comprises an FPGA (field programmable gate array), an ARM and a DSP (digital signal processor).According to the invention, the processing speed is greatly improved; mutual labor division definition is realized; working efficiency is improved. The radio frequency control circuit board is specially designed; a radio frequency input signal is subjected to three-stage frequency mixing to finally obtain an intermediate frequency of 10.7 MHz; the low-level signal is measured by reducing the inputloss, reducing the resolution bandwidth and taking the average trace of the trace; the low-level signal can be separated from the noise; and the low-level signal can be measured more easily and observation and comparison are performed by the trace.
Owner:青岛汉泰智能科技有限公司

Verification instrument for gear center distance severability

The invention discloses a verification instrument for gear center distance severability, and belongs to the field of demonstration teaching tools. A driving gear rotation device drives a driving gear to rotate, and the driving gear transmits torque to a driven gear through tooth profile meshing; the change of angular displacement between the driving gear and the driven gear is detected through a detection unit in real time and is displayed through a digital display device; the consistency of the instantaneous transmission ratio of gear transmission is determined by observing the synchronization of the change of the rotating angle between the driving gear and the driven gear; the center distance between the driving gear and the driven gear is changed through a center distance adjusting device; under different center distance conditions, experiments are performed many times so that the gear center distance severability can be verified. The novel demonstration teaching tool is provided for classroom teaching of the gear center distance severability content of an involute profile; besides, as the verification instrument is organically combined with the theoretical teaching modes of text representation and formula derivation, boring knowledge points can be displayed vividly, and the effect of classroom teaching is effectively improved.
Owner:JIANGSU AIRSHIP GEAR

Method for correcting pronunciation based on machine vision

The invention relates to the technical field of computer software, in particular to a method for correcting pronunciation based on machine vision. The method comprises the following steps: S1, synchronously collecting a user pronunciation audio and a user mouth shape image in real time; S2, detecting whether the pronunciation audio of the user contains words with confusing pronunciation or not, and if so, executing S3, or if not, executing S4; S3, respectively extracting a confusing audio clip and a confusing image clip containing the corresponding time period of the words with confusing pronunciation from the user pronunciation audio and the user mouth shape image, respectively comparing a preset standard confusing audio and a preset standard confusing image with the confusing audio clip and the confusing image clip, and judging whether the pronunciation is wrong or not; S4, respectively comparing a preset standard pronunciation audio and a preset standard mouth shape image with a user pronunciation audio and a user mouth shape image, and judging whether the pronunciation is wrong or not; and S5, prompting a pronunciation error, and outputting the standard confusion audio or the standard pronunciation audio. The technical problem that confusing pronunciation cannot be corrected in the prior art is solved.
Owner:CHONGQING MEDICAL & PHARMA COLLEGE

Comparison test device for remediation of contaminated soil by agents with different concentration ratios

The invention discloses a comparison test device for remediation of contaminated soil by agents with different concentration ratios, the comparison test device comprises a platform and a first motor, a middle bearing of the platform is connected with a driving rotating rod, the lower side of the driving rotating rod is welded with a lower turntable, and the first motor is fixed on the upper side of the platform through bolts, and the output end of the first motor is connected with the upper end of the driving rotating rod, a first tooth block is installed on the outer side of the lower turntable, the outer side of the first tooth block is in engaged connection with a first gear, and the interior of the first gear is in key connection with a driven rotating rod. According to the comparison test device for remediation of contaminated soil by agents with different concentration ratios, the vertical movement of a baffle plate can be controlled by utilizing the rotation of an adjusting disc and the sliding and rotation of a convex block in an adjusting groove, the agents can be conveyed into measuring cylinders from discharge ports, and different amounts of agents can be conveyed into the measuring cylinders by utilizing the discharge ports distributed at different heights, and the same amount of water is added into the measuring cylinders at the corresponding positions, so that medicaments with different concentrations can be mixed.
Owner:王欣燕
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