36results about How to "Reduce the difficulty of experimental operation" patented technology

The invention discloses an adjustable microorganism cultivation dish operating frame. The adjustable microorganism cultivation dish operating frame is characterized in that a lifting frame is arranged at the upper end of a cultivation dish operating frame base, a left lifting support is arranged at the left end of the lifting frame, a right lifting support is arranged at the right end of the lifting frame, a lifting rack is arranged in the middle of the lifting frame, and an operating worktable is arranged at the upper end of the left lifting support and the upper end of the right lifting support and is fixedly mounted at the upper end of the left lifting support, the upper end of the right lifting support and the upper end of a connecting fixing plate. A transmission shaft is arranged between left and right fixing frames, a lifting gear is arranged in the middle of the transmission shaft and is mounted on the front side of the lifting rack, and a lifting adjusting handle is arranged at the left end of the transmission shaft. A mixing dish shaking frame is arranged on the right side of the lifting frame, a stationary solidification frame is arranged on the right side of the mixing dish shaking frame, and a stationary worktable is arranged at the upper end of the stationary solidification frame.

The invention relates to a method for evaluating stability of heavy residuum. The method comprises steps of: mixing a heavy residuum sample with toluene according to a mass ratio of 1:9; adding n-heptane according to a volume ratio of 0.5-3:10 into a mixed solution of heavy residuum sample and toluene after standing; shaking violently for seconds; dumping into a drying clean colorimetric ware rapidly; covering; scanning by a UV spectrophotometer to determine light transmittance of the solution; selecting UV visible light with a wavelength of 740nm as a scan spectrum; processing an obtained light transmittance value by a formula (1), wherein HRS represents stability value, and Ti represents light transmittance of single scan, and T represents average light transmittance of scan, and n represents scan frequency. The larger the values above are, the more stable the colloid structure of the oil product when environment changes. The experimental operation has little difficulty, is beneficial for on-site workers and provides guidance for oil product processing.

The invention discloses a device and method for testing the tangential and normal resistance of an anchor chain and soil under an equivalent elastic boundary. The device comprises a support frame, a transmission device, a pneumatic loading system, a test box, a vertical displacement applying part, a tangential Anchor chain unit, normal anchor chain unit, etc. By using springs of equal stiffness to simulate the elastic boundary, the invention greatly reduces the size of the test box under the influence of the boundary conditions, can effectively save materials and reduce the difficulty of experimental operation; at the same time, it sets the normal and tangential resistance tests as It can measure the tangential and normal interaction between the anchor chain and the soil at the same time, which can provide important design parameters for the calculation of the engineering anchor chain into the soil, and has important reference significance for the design of the mooring system with the anchor point below the seabed mud surface.

The invention relates to a comprehensive experiment loop system for working medium forced circulation of heat conduction oil. The comprehensive experiment loop system comprises a main experiment loop, a cooling circulation loop and a data collection and control system, wherein Dowtherm-A heat conduction oil is taken as a working mechanism of the main experiment loop, and water is taken as a working mechanism of the cooling circulation loop; the main experiment loop comprises an oil conduction oil tank, a centrifugal pump, an regulating valve, a flow meter, an experiment body section and a heat exchanger are connected according to the working mechanism flow direction; and the cooling circulation loop comprises a cooling agent tank, a centrifugal pump, an regulating valve, a flow meter, a heat exchanger and an air cooling tower. The heat conduction oil is guided out from the oil conduction oil tanks through the centrifugal pumps, enters an experiment body through the flow meters after being subjected to flow regulation through the regulating valves, finally is cooled through the heat exchanges and flows back to the oil conduction oil tank so as to form closed forced circulation flow; the cooling circulation loop is connected with the main experiment loop through the heat exchangers, and heat of the main experiment loop is discharged. The comprehensive experiment loop system can simulate the flow heat exchanging property of FLiBe, is easy to operate, economic, safe and high in measurement accuracy and can be used for implementing the experimental study on core stacking of a molten salt reactor ball bed, heat convection of pipelines and flow resistance of key equipment.

The invention relates to a sprocket set driving tube cleaner curve pulling experimental device which comprises a tube cleaner driving system, an experimental pipe, a pipe support system and a tensionsensor measuring system. The pipe support system is used for supporting and fixing the experiment pipe. The tube cleaner driving system is formed by the cooperation of a driving sprocket set connectedto a motor and two driven sprocket sets and chains and is used for providing power for the operation of the tube cleaner. The tensile force measuring system comprises an S type tension sensor and a computer and is used for outputting operational resistance borne by the tube cleaner during an operation process in real time, and therefore, a driving force needed for the operation of the tube cleaner is predicted. Compared with the prior art, the device of the invention is applicable to a full-scale tube cleaner pulling experiment, the force condition of the tube cleaner in the operation processin a bent tube can be simulated in a realistic manner, the reliability of the data is ensured, the difficulty of the experiment operation can be effectively reduced, the cost of the experiment is controlled, and the force of the tube cleaner in the bent tube is the same as that in an actual tube cleaning operation.

The invention discloses an improved type self-adaptive method for T2-G acquisition parameter t0 of a CPMG sequence. The self-adaptive method comprises the following basic steps: defining a t0 self-adaptive discriminant factor sigma; before formal experiment of the T2-G, changing the t0 to carry out nuclear magnetic resonance preacquisition to obtain a sigma curve, and by combination of the maximum-value condition of sigma and the constraint condition of the signal-to-noise ratio, realizing automatic searching and matching of the optimized t0. The improved type self-adaptive method disclosed by the invention has the advantages that the operation difficulty of the experiment can be effectively reduced; and by application of the improved type self-adaptive method, the experiment efficiency of the T2-G is greatly improved, and the application prospect is wide on the oil-field site.

The invention relates to a purification and amplification device, which includes: a substrate and a pipeline structure arranged on the substrate, the pipeline structure includes several liquid inlets, PCR amplification chambers and purification chambers; the liquid inlet includes a first A sample inlet, a first reagent port, a second reagent port, a third reagent port and a fourth reagent port, the first sample inlet and the first reagent port are connected through a first pipeline, the purification chamber includes an inlet and an outlet, the second A sample inlet is connected to the inlet through a second pipeline, the first reagent port is connected to the outlet through a third pipeline, and the second reagent port, the third reagent port and the fourth reagent port are all connected to the inlet through a fourth pipeline; The first end of the PCR amplification chamber is provided with the first part of the double valve, the second end of the PCR amplification chamber is provided with the second part of the double valve, and the first part of the double valve passes through the fifth pipeline and the first single valve connection, the first single valve is connected to the outlet through the sixth pipeline; the purification and amplification device provided by the present invention does not need to add electrodes in the pipeline structure to realize the extraction of amplified substances.

The present invention discloses a novel same-threshold equivalent dual-band mid-infrared pulsed laser and a laser output method, and relates to the technical field of mid-infrared lasers. The present invention includes a 1150nmLD pump source and a first dichroic mirror arranged in sequence along the horizontal direction. , a second dichroic mirror, a first focusing lens, a double-clad holmium-doped fluoride gain fiber, a first collimating mirror and a gold-plated mirror, and a 1950nmLD pump source arranged above the first dichroic mirror, the first Between the collimating mirror and the gold-plated reflector, a second focusing lens, an antimonene two-dimensional saturable absorbing material, and a second collimating mirror are sequentially arranged along the horizontal direction. The present invention can achieve ~3 microns and ~2.1 microns with the same threshold The output of the dual-band continuous laser, and by adjusting the power ratio of the 1150nmLD pump source and the 1950nmLD pump source, can realize the simultaneous output of ~3 micron and ~2.1 micron dual-wavelength pulsed laser, which can be widely used in multi-material Processing, medical surgery and other fields.

The invention discloses an imaging experiment teaching device for middle school physics studying. The device comprises the components of a bearing base, an imaging device, adjusting screws, a bull gear, a movable seat, a light source device, a convex lens, a pinion and a first rocking bar. The top of the bearing seat is provided with an adjusting trough. One end of the adjusting trough is providedwith the imaging device at one end of the adjusting trough. The adjusting trough is internally provided with the adjusting screws. The adjusting screws comprise a first adjusting screw and a second adjusting screw. The first adjusting screw and the second adjusting screw are symmetrically arranged. The imaging experiment teaching device has advantages of reasonable and simple structure, and highconvenience in use. Rotation of gears and screws is used for performing adjustment, thereby effectively improving adjusting stability of the imaging experiment teaching device and reducing experimentoperation difficulty. The diameter of the bull gear is two times of that of the pinion so that adjustment precision is effectively improved. Rolling protection and dust eliminating are performed on animaging screen, thereby ensuring high imaging sharpness of the imaging screen, improving teaching effect of a physics imaging experiment, and realizing higher practicability.

The invention discloses a non-contact strain field and acoustic emission combined split type measuring system and method. The system comprises a testing sample, two testing machine clamps, an acoustic emission sensor, an acoustic emission acquisition system, a camera, image acquisition control equipment and a fixing device, wherein the testing sample adopts a rectangular strip nonmagnetic material; the two testing machine clamps respectively clamp the upper and lower ends of the testing sample and stretch the testing sample; the acoustic emission sensor and the camera are respectively fixed on the left and right opposite sides of the testing sample; the acoustic emission sensor sends collected acoustic signals to the acoustic emission acquisition system; the camera sends collected image signal to the image acquisition control equipment; the acoustic emission sensor adopts a cylinder; a sensing surface is formed on the top surface of the cylinder; the acoustic emission sensor is fixed through the fixing device, so as to ensure that the sensing surface of the acoustic emission sensor is adhered to the surface of the testing sample. The system is simple in structure, and high in reliability and testing precision, and can effectively solve the problem in fixing the nonmagnetic material.