9results about How to "Improve the experimental effect" patented technology

The application discloses a pSY1A plasmid vector for a wheat germ cell-free expression system, which is constructed by introducing an ampicillin resistance gene, an Ori replicon, a T7 promoter, a translation enhancer, a MCS (multiple cloning site), a 3'-UTR sequence and a T7 terminator sequence on the basis of part of a sequence of an E. coli plasmid pUC19. The pSY1A plasmid vector has a MCS into which an exogenous gene can be inserted, and the MCS and a transcription assembly constitute a transcription module, so that the transcription module can be preserved by preserving the plasmid, and in-vitro transcription of the wheat germ cell-free expression system becomes more convenient and faster.

This utility model relates to the field of chemical experimental equipment technology, specifically to a laboratory feeding device. The feeding device is characterized by comprising a mounting frame, which includes a lower material tray support and an upper feeding support. A feeding bottle is mounted on the material tray support, and a reaction vessel is connected below the feeding bottle. The feeding bottle includes a solid material bottle, and a discharge port is provided at the lower end of the solid material bottle. A solid feeding mechanism is provided on the feeding support, and the solid feeding mechanism includes a vertical drive mechanism. A vibration mechanism is provided at the lower end of the vertical drive mechanism. The vertical drive mechanism drives the vibration mechanism to move downward to contact the solid material bottle, causing residual material inside the solid material bottle to vibrate and fall off. The vibration mechanism enables vibratory feeding, causing material adhering to the walls of the solid material container to fall off, ensuring smooth material feeding and guaranteeing experimental efficiency and quality.

The utility model relates to target chamber technical field, specifically disclose a kind of multi-beam irradiation target chamber, including cylinder, cylinder two ends are provided with front end cap and rear end cap, front end cap is located in the one end of cylinder near beam source, and is provided with several beam source connecting cylinders on front end cap, beam control mechanism is set between beam source connecting cylinder and beam passage, the other end of beam passage extends to the region where target material is located, and target material is set in cylinder by target material positioning mechanism. Through the one-to-one correspondence of multiple beam source connecting cylinders and the beam passage in cylinder, the independent on-off control of multi-beam can be realized;Through the setting of target material positioning frame and arc clamping block, both the stability of target material in the irradiation process is ensured, and the convenient replacement of target material can be realized. The problem that the space intersection between different beams when the multi-beam passes through the rigid channel in the conventional target chamber can cause serious scattering effect and non-intended energy deposition superposition;And target material switching and attitude adjustment difficulty.

The utility model relates to wastewater treatment technical field discloses electrolytic water hydrogen production wastewater treatment flocculation reagent dosing experimental device, including raw water storage unit, reagent preparation unit, reaction unit, sampling detection unit and data processing unit, and reaction unit communicates with raw water storage unit and reagent preparation unit, and sampling detection unit is connected with reaction unit, and data processing unit is connected with sampling detection unit signal, the utility model discloses when the flocculating agent of wastewater treatment or operating parameter changes, through sampling detection unit, the instantaneous water quality of reaction unit and mixed water quality and instantaneous effluent water quality and mixed effluent water quality are collected, and then through data collection unit, the experimental raw water consumption in experimental process, reagent dosing amount and water quality of inlet and outlet are exported analysis, through comparing the running mode under different parameters, the reagent dosing combination of economic, reasonable, efficient, stable operation is drawn, and the effluent water quality is more stable, and the operation cost is more economic.

The utility model discloses a xenon lamp aging testing machine, which comprises a case, an aging structure and a heat dissipation structure, the aging structure is arranged on the case, the heat dissipation structure is arranged on the case, the aging structure comprises an irradiation unit, a rotating unit and a heating unit, the irradiation unit is fixedly arranged on the side wall of the case, and the rotating unit is fixedly arranged on the side wall of the case. The rotating unit is arranged at the bottom of the case and located in front of the irradiation unit, and the heating units are arranged at the bottom of the case and located on the two sides of the rotating unit. The utility model belongs to the technical field of aging equipment, particularly relates to a xenon lamp aging tester, and effectively solves the problems that light rays emitted by a xenon lamp light source of the xenon lamp aging tester are not uniformly distributed, and a sample is fixedly placed, so that the illumination intensity on the surface of the sample is not consistent, and the accuracy of a test result is influenced.

The utility model provides a sample collimation adjusting device for a neutron scattering rheological experiment. The sample collimation adjusting device comprises a first movement assembly, a second movement assembly, a third movement assembly and a diaphragm assembly. The second movement assembly is arranged on the first movement assembly, and the first movement assembly can drive the second movement assembly to move in the first axial direction. The third movement assembly is arranged on the second movement assembly, and the second movement assembly can drive the third movement assembly to move in the second axial direction. The diaphragm assembly is arranged on the third movement assembly, the third movement assembly can drive the diaphragm assembly to move in the third axial direction, and every two of the first axial direction, the second axial direction and the third axial direction are perpendicular. The diaphragm assembly comprises a diaphragm positioning sight bead, the diaphragm positioning sight bead is provided with a cross-shaped slit, the cross-shaped slit is used for allowing neutrons to pass through so that the neutrons can be clustered, the clustered neutrons can hit on a rheological sample of the rheological table, high-precision alignment is achieved, and the experiment effect is improved.

The application discloses an aviation alternative fuel Bunsen burner capable of sufficiently mixing different kinds of gases, which comprises a mixing chamber, an air inlet assembly and a nozzle assembly, the two ends of the mixing chamber are respectively provided with a mixing chamber inlet and a mixing chamber outlet, and a gas mixing structure is arranged in the mixing chamber; the air inlet assembly comprises a gas path connecting nozzle, the gas path connecting nozzle is detachably installed at the mixing chamber inlet, a plurality of air inlet joints are arranged on the gas path connecting nozzle, and a gas supply device is communicated with the tail end of the air inlet joint; the nozzle assembly is detachably installed at the mixing chamber outlet, and the mixed gas in the mixing chamber is sprayed out through the nozzle assembly. The application can sufficiently and uniformly mix the gases, so that better and more ideal experimental effects are achieved; meanwhile, the air inlet assembly of the application can be changed according to the kinds of the gases to be mixed, and the air inlet joints are increased, so that the effect of sufficiently and uniformly mixing a plurality of gases is achieved.

The application relates to a simulation experiment system of canyon river and alluvial fan interaction, which comprises a groundwater reservoir, a water inlet pool, a water and sand mixing narrow slot, a sediment deposition pool and a water outlet pool. The simulation experiment system can meet the research needs of river and alluvial fan interaction, can inversely analyze the process of alluvial fan development forming an alluvial plain, and has the advantages of simple operation, precise control, convenient measurement, low cost and the like.

The present application relates to the application of GBP4 gene silencing preparation in the preparation of drugs for preventing and treating atherosclerosis, and belongs to the technical field of biological medicine. In order to solve the technical problems that the existing atherosclerosis treatment target is single, cannot target regulate chronic inflammation of blood vessels, and is difficult to suppress disease progression from the root, the present application provides the application of GBP4 gene silencing preparation in the preparation of drugs for preventing and treating atherosclerosis, and the gene silencing preparation is a recombinant lentivirus vector carrying shRNA targeting GBP4. The present application first finds that GBP4 is a positive regulator of atherosclerosis, and the GBP4 gene silencing preparation can reduce the area of atherosclerotic plaque, delay the occurrence and development of atherosclerosis; increase the thickness of the fibrous cap of the plaque, enhance the stability of the plaque, and reduce the risk of plaque rupture; at the same time, reduce the systemic inflammation level, reduce the inflammatory response of the blood vessel wall, and have important clinical application value and broad market prospect.