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71results about How to "The experiment went well" patented technology
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Natural gas hydrate occurrence type simulated exploitation experimental system
ActiveCN107420069AAvoid cloggingReal-time acquisitionConstructionsFluid removalVapor–liquid separatorCollection system
The invention belongs to the technical field of hydrate fundamental researches and relates to a natural gas hydrate occurrence type simulated exploitation experimental system. The system comprises a reaction still, a gas-liquid collection system and a data collection system. Natural gas hydrates are generated in the reaction still firstly, then pressure is reduced by regulating a back pressure regulating valve, the balance condition of the natural gas hydrates is destroyed, and the natural gas hydrates are decomposed. Through three different types including sand filling, water and permeable water resistance film, simulation of natural gas storage is achieved; an interior exploring well has three segments totally and is used for studying exploration characteristics of different depths of the exploring well; a screen mesh is used for conducting secondary sand prevention in the exploring well, sand blocking is prevented, and it is more effectively guaranteed that experiments are conducted smoothly; silica gel is put in a gas-liquid separator in a gas-liquid collection device and prevents the water from entering a bumper, the gas-liquid separator is arranged on a balance, a pressure gauge is connected to the bumper, the pressure gauge and the balance are both connected with the data collection system, and thus the gas-liquid explored condition in the exploration process can be collected in real time.
Owner:DALIAN UNIV OF TECH
Animal motion sickness inducing device
InactiveCN103238533AReasonable structural designEasy to operateTaming and training devicesMotion sicknessDrive wheel
Provided is an animal motion sickness inducing device. The problem that simple stimulation-induced modeling and diversified experiment factors of rodent motion sickness in the prior art influence determination data and enable the data to be unreliable and the like is solved. The animal motion sickness inducing device comprises a base, a rotary table assembled on the base through a rotary shaft and used for driving an experimental animal to move and a drive device. The technical point is that at least two animal limiting movement devices are fixed on the rotary table, and each animal limiting movement device comprises a support, a base provided with an excrement collecting trough, a walking mechanism fixed on the base, a trunk limiting cover and a head fixing device. The rotary shaft is assembled on the base through a bearing seat, and a rotary shaft drive device comprises a motor, a driven wheel fixed on the rotary shaft, a driving wheel driven by the motor and a transmission belt tensioned on the driving wheel and the driven wheel. The animal motion sickness inducing device is reasonable in structural design, convenient to operate, safe and reliable in use, effectively establishes an animal experimental model inducing the motion sickness and facilitates control of research, development and screening of anti-motion-sickness drugs and guidance of clinical treatment.
Owner:SHENYANG MEDICAL COLLEGE
In-vitro eyeball fixator
ActiveCN103310681AEasy to separate and ingestThe experiment went wellTeaching apparatusEngineeringDrainage tubes
The invention relates to an in-vitro eyeball fixator. The in-vitro eyeball fixator comprises an ice box, a flushing drainage tube, a rectus fixing part and a groove, wherein the groove is arranged in the ice box and matched with the shape of an eyeball to be arranged, a drainage hole is formed in the bottom of the groove, one end of the flushing drainage tube is connected to the drainage hole, the other end of the flushing drainage tube penetrates out of the bottom of the ice box, the rectus fixing part and the a rectus distribution position of the eyeball to be arranged are correspondingly arranged on the outer side of the edge of the opening of the groove, and the rectus fixing part and the rectus attachment point of the eyeball to be arranged are enabled to be consistent with the horizontal plane of the in-vitro eyeball fixator. According to the in-vitro eyeball fixator, the eyeball can be fixed on the eyeball fixator normally, separation and taking of various eye tissues by researchers at all levels in the ophthalmology field are facilitated, smooth eye experiments are guaranteed, the problem of fixation during operations of in-vitro eyeballs or various separation experiments for eye tissues is solved, and smooth experiments are guaranteed.
Owner:GENERAL HOSPITAL OF PLA
Sheep neck yoke
ActiveCN103918564ABaoding is goodGood Baoding Sheep BaodingAnimal housingEngineeringPosition control
The invention relates to equipment used in animal houses, in particular to a neck yoke used for sheep raised in a house. The sheep neck yoke comprises an upper end cross rod, a middle cross rod, a lower end cross rod and vertical rods on the left and the right of a sheep house, supporting rods are arranged between the upper end cross rod and the middle cross rod in the vertical direction, supporting rods are arranged between the middle cross rod and the lower end cross rod in the vertical direction, the middle cross rod is fixedly provided with a sliding rod, linkage rods are arranged on the sliding rod at intervals, and position controlling holes are formed between the linkage rods and the sliding rod and between the lower end cross rod and the supporting rods adjacent to the lower end cross rod. The sheep neck yoke is simple in structure, the sliding rod is arranged on the upper end cross rod of the sheep house in a sleeved mode, the upper ends and the lower ends of the position control holes are a part of the sheep house, the sheep neck yoke is firm and is not prone to being damaged by sheep, the service life is prolonged, materials are saved, and cost is saved.
Owner:青岛森淼生物技术有限公司
Biomechanical generator
InactiveCN103555561AClose contactThe experiment went wellBioreactor/fermenter combinationsBiological substance pretreatmentsBiomechanicsEngineering
The invention discloses a biochemical generator, which comprises a base, a dovetail guide sliding rail, a workbench main body and a biomechanical generation mechanism, wherein the dovetail guide sliding rail is perpendicular to the upper end face of the base; the workbench main body is matched with the dovetail guide sliding rail through a dovetail groove; the biomechanical generation mechanism is arranged on the upper end face of a workbench; a threaded rod is perpendicularly arranged on the upper end face of the base; a gear mechanism for driving the threaded rod to rotate is arranged in the base; a worm gear is arranged on the lower end face of the workbench main body, and is assembled with the workbench main body in a rotating way; a worm for driving the worm gear to rotate is arranged on the workbench main body; the worm gear is sleeved on the threaded rod, and is in threaded fit with the threaded rod. According to the biochemical generator, the workbench is quickly lifted through a rough adjustment device (the gear mechanism), and is lifted by a minor distance through a fine adjustment device (a worm gear and worm matching mechanism), and a crank-link mechanism is driven by a motor to drive a simulated mechanical contact of the biochemical generation mechanism to reciprocally rotate, so that virtual shear force is generated on the surface of a biological membrane on the contact by the swinging of the biological membrane.
Owner:王卫明 +2
Medical research applying animal experiment platform
The invention discloses a medical research applying animal experiment platform which comprises a control panel, a table board and a cabinet. The control panel is arranged on one side of the top of the table board, an LED lamp, a camera and a switch panel are arranged at the top of the control panel; the medical research applying animal experiment platform is characterized in that the LED lamp is fixedly connected with a top plate of the control panel through a metal hose, the camera is fixedly connected with the top plate of the control panel through a support, the switch panel is fixedly connected with the top plate of the control panel through a bolt, an LED lamp switch, an ultraviolet germicidal lamp switch, a camera switch and a hot fan switch are installed on the surface of the switch panel, and an air outlet and a writing whiteboard are arranged in one side of the control panel. The medical research applying animal experiment platform is simple in structure and convenient in use; in the process of animal experiments, the LED lamp can be used for lighting, the camera can be used for shooting and recording on experiments and the writing whiteboard can be used for writing the process and experimental data in the experiments, and smooth progress of the experiments is guaranteed.
Owner:XINXIANG MEDICAL UNIV
Test tube rack for a chemical laboratory
InactiveCN109046510AImprove practicalityThe experiment went wellTest tube stands/holdersTest tubeChemical laboratory
The invention relates to the technical field of chemical experiment equipment, and discloses a test tube rack for a chemical laboratory. The test tube rack comprises a base, wherein vertical rods arefixedly installed at four corners of the top of the base, sliding blocks are in movable sleeved connection with the bottom ends of inner cavities of the vertical rods, adjusting rods are fixedly installed at the tops of the sliding blocks, the top ends of the adjusting rods penetrate the vertical rods and extend to the outside of the top ends of the vertical rods, and rotating devices are fixedlyinstalled at the top ends of side surfaces of the vertical rods. According to the test tube rack for the chemical laboratory, the adjusting rods are driven by rotating gears to move vertically by / under cooperation of the rotating gears and the adjusting rods, so that height of the adjusting rods from the base is changed, and the test tube rack can be used for placing test tubes with different heights; rotating blocks are rotated, the adjusting rods are fixed by pressing blocks, the adjusting rods cannot descend due to own gravity and weight of test tubes, the experiment can be smoothly conducted, and practicability of the test tube rack is improved.
Owner:黄超
No-cooling-water direct-cooling electronic condenser and experimental device
InactiveCN101862689BReduce high investmentLow cooling temperatureHeating or cooling apparatusRotary evaporatorDistillation
The invention discloses a no-cooling-water direct-cooling electronic condenser and an experimental device, which can be widely used in research institutions, higher education institutions and enterprise research and development organizations engaged in industries such as chemistry, chemical engineering, pharmacy, food, environment and the like. The electronic condenser and the experimental devicerequire no cooling water during experiments. The condenser is formed by an electronic refrigerator and supportive condenser pipes. The electronic refrigerator is used for directly cooling the experimental device and can be used for directly cooling reflux experimental devices, distillation experimental devices, agitation reaction experimental devices, rotary evaporator devices and water distillerdevices. The electronic condenser causes no pollution and no noise, the cooling medium is not required, the wastage of tap water resources can be thoroughly solved, the success of the experiment can be guaranteed and the like; the cooling temperature lower than the temperature obtained through tap water cooling and no-refrigerating-circulating-water cooling; through controlling the input current of electronic refrigerating elements, the high-precision condensing temperature control can be realized; and the structure of the device is simple and the popularization and the promotion are easy.
Owner:李景峰 +1
X-Y axial fine turning device for test bench of engine
The invention discloses an X-Y axial fine turning device for a test bench of an engine. The device is characterized by consisting of an X axial fine turning device and a Y axial fine turning device which are vertically connected with each other, wherein the X axial fine turning device comprises an X axial sliding block, an X axial guide rail, an X axial nut supporting plate, an X axial adjusting screw rod and an X axial adjusting handle; a plurality of locking pins and fixing screw rods are arranged on the X axial sliding block; the X axial sliding block is arranged in the X axial guide rail; the X axial nut supporting plate is in bolt connection with the front end surface of the X axial guide rail; and the X axial adjusting handle is fixedly connected with the X axial sliding block through the X axial adjusting screw rod and a threaded through hole of the X axial supporting plate. The device has a reasonable design and high accuracy and is convenient to operate; adjusting and centering time is saved; and when a lifting Y screw rod or a translation X screw rod are adjusted and nuts are locked, the accuracy of the device can reach more than 0.004mm, so that the original adjustment accuracy is greatly improved. By the device, the engine can be smoothly tested on the test bench.
Owner:武汉东测科技有限责任公司
Artificial slope surface structure for physical resistance experiment measurement
ActiveCN108648577AConvenient summaryDistinctive Learning ExperienceEducational modelsEngineeringData transmission
The invention provides an artificial slope surface structure for physical resistance experiment measurement,which comprises a base,an angle adjusting disc and a sliding block; an upward side guard board is fixedly connected with the front end and the rear end of the base respectively,a charging head is arranged in the front end plane of the side guard board at the front end of the base,and a datatransmission interface is arranged in the rear end plane of the side guard board at the rear end of the base. According to the invention,an inclined plate capable of ignoring force of friction,a first-stage friction bottom plate,a second-stage friction bottom plate and a third-stage friction bottom plate are arranged,and the friction resistance relationship among the first-stage friction bottom plate,the second-stage friction bottom plate and the third-stage friction bottom plate is 1-fold,2-fold and 3-fold sequentially,thereby being capable of forming a sharp contrast experiment at the time of performing the physical experiment,and facilitating accepting more vivid learning experience for students,regular growth of friction resistance facilitates summarizing various stress relationships on the inclined plate for the students.
Owner:临沂鸿泰建材有限公司
Fishing, temporarily-storing and parching device special for water maze experimental rats
PendingCN110622873AShorten experiment timeImprove experimental efficiencyDrying solid materials with heatAnimal housingWater mazeFishing
The invention relates to a fishing, temporarily-storing and parching device special for water maze experimental rats. The device comprises a moving frame body, experimental rat storing cages and an experimental rat temporarily-storing platform, the moving frame body has four layers, multiple experimental rat cage placement cells are made on each layer, each experimental rat storing cage is slidably mounted in the corresponding experimental rat cage placement cell, an infrared electric parching lamp is arranged at the top end of each experimental rat cage placement cell, a retaining plate is hinged at the top end edge of each experimental rat cage placement cell, the lower end of each retaining plate does not contact with the corresponding experimental rat storing cage, and an experimentaltool storing cabinet and the experimental rat temporarily-storing platform are arranged on the lower portion of the moving frame body; a water maze special lamp mechanism is arranged at the top end ofthe moving frame body and comprises an inverted lamp cover and an incandescent lamp mounted in the lamp cover, and one side of the inverted lamp cover is connected with the top end of the moving frame body through hinges. The device is simple in structure, simple and convenient in operation and capable of greatly improving water maze experiment efficiency.
Owner:TIANJIN KANGTING BIOLOGICAL ENG GRP CO LTD
Western blot antibody incubation box
The invention discloses a western blot antibody incubation box, and belongs to the field of laboratory instruments. The western blot antibody incubation box comprises a box body and a cover, wherein a flat plate is arranged inside the box body and maintains a certain height to the bottom surface, the upper surface of the flat plate has hydrophobicity, and rotation membranes are placed on the flat plate. According to the western blot antibody incubation box of the present invention, the rotation membranes and the antibody are placed on the hydrophobic flat plate, the antibody requirement amount is less, the contact of the antibody and the rotation membrane is uniform, the plurality of the rotation membranes can be arranged in one incubation, and no cross-contamination is generated; the groove on the bottom portion of the box body is filled with the water to maintain the moist state inside the box body so as to inhibit the volatilization of the antibody, wherein the volatilization of the water can be controlled by controlling the number of the groove for holding the water; and the whole structure is simple, the operation is convenient, the incubation experiment can be completed by using the plastic box body, the glass plate and the sealing membrane, the antibody requirement amount is less, the incubation efficiency is high, the recycling can be achieved, and the assurance is provided for the efficient and smooth performing of the experiment.
Owner:ZUNYI MEDICAL UNIVERSITY
In-vitro eyeball cleaning membrane and in-vitro eyeball fixator
ActiveCN103315849AEasy to separate and ingestThe experiment went wellEye surgerySurgical operationEngineering
The invention relates to an in-vitro eyeball cleaning membrane and an in-vitro eyeball fixator. The cleaning membrane comprises a concave membrane matched with in-vitro eyeballs in shape and an expansion membrane extending outwards along the opening edge of the concave membrane in a plane shape, and a contamination drain hole is formed at the bottom of the concave membrane. The fixator comprises an ice box, a washing drainage tube, a rectus fixing part, a groove and the in-vitro eyeball cleaning membrane, and the groove is formed in the ice box and matches with to-be-placed eyeballs in shape. Eyeballs can be fixed on the eyeball fixator in a normal state to be convenient for researchers at all levels in the ophthalmology field to separate and take various eye tissues, and the problem that in-vitro animal eyeballs are difficult to fix in surgical operation or various eye tissue separation experiments is solved. When the in-vitro eyeball cleaning membrane is used with the in-vitro eyeball fixator, cross contamination between eyeballs can be prevented effectively, cleanliness of the eyeball fixator is protected, and favorable conditions are provided for ophthalmology experiments.
Owner:GENERAL HOSPITAL OF PLA
Protective cover for chemical experiments in senior high school
Owner:南京方易日辰电子科技有限公司
Bioexperiment induction type culture dish
InactiveCN107325968AImprove sealingGuaranteed accuracyBioreactor/fermenter combinationsBiological substance pretreatmentsVacuum extractionMicrobiology
The invention discloses a bioexperiment induction type culture dish. The bioexperiment induction type culture dish comprises a culture dish body, a dish lid, a base body, an isolation dish, a filtering membrane, a weighing device and a temperature sensor, the culture dish body is of a hollow cylindrical structure of which the upper end is opened, the dish lid and the base body are arranged at the upper end and the lower end of the culture dish body respectively, the isolation dish is arranged in the middle of the bottom of the culture dish body, the filtering membrane is arranged in the isolation dish, and the weighing device and the temperature sensor are arranged on the base body separately. An electric heating plate is arranged at the bottom of the culture dish, and a vacuum extraction pump is arranged at one side of the lower portion of the culture dish. Through the mode, the bioexperiment induction type culture dish has the functions of conducting weighing and sensing the temperature, the sealability is good, and it is guaranteed that internal liquid is not contaminated; meanwhile, through the arrangement of the filtering membrane, germs can be prevented from entering the isolation dish to some degree, the probability that the culture dish is contaminated is lowered, the precision of test data is ensured, and the culture dish is beneficial for smooth proceeding of experiments.
Owner:SUZHOU WANMUCHUN BIOLOGICAL TECH
Artificial feed used for bioassay of young larvae of red palm weevils
PendingCN109717331ALow costEasy to get materialsFood processingFood preservationCelluloseSimple component
The invention discloses an artificial feed for young larvae of red palm weevils. The artificial feed is prepared from the following raw materials: a cellulose component, a vitamin component, a preservative component, an antibiotic component, a carbon source component, a nitrogen source component, a solvent component and a coagulant component. The artificial feed has the advantages of simple components, convenient material acquisition, simple and convenient operation and stable effect, can ensure the smooth progress of the bioassay experiment of the young larvae of red palm weevils, and has important significance for preventing and treating the invasion pest of red palm weevils.
Owner:FUJIAN AGRI & FORESTRY UNIV
A heat retaining test tube stand
InactiveCN105772137APlace stableThe experiment went wellHeating or cooling apparatusTest tube stands/holdersElectricityThermal energy
The invention provides a heat retaining test tube stand. The test tube stand comprises a supporting plate and a base plate. The four corners of the base plate are respectively fixedly connected to four guide columns. Lower ends of the guide columns are provided with screws. The four corners of the supporting plate are respectively provided with guide holes and sleeve the guide columns through the guide holes. In lower part of the supporting plate, the guide columns are sleeved with nuts matched with the screws on the guide columns. The supporting plate is provided with a plurality of though holes for accommodating test tubes. The surface of the base plate is provided with a square groove. A plurality of heating tubes are evenly disposed in the square groove, and are communicated with air flowing pipes inside the base plate. A circuit board is communicated with the air flowing pipes. The air flowing pipes transfer heat converted from electricity to the heating tubes. The test tube stand is provided with heating and heat retaining devices and allows agents in the test tubes to be at the most proper temperature by virtue of electricity, thus ensuring success performing of experiments, and simplifying experiment devices. The test tube stand has practical application value.
Owner:TIANJIN LIYOU MACHINERY MFG CO LTD
Device for simulating space gravity biological test in high grads strong magnetic field
InactiveCN101188069AAchieving Accurate MeasurementsEasy to controlBioreactor/fermenter combinationsBiological substance pretreatmentsData displayEngineering
The invention relates to a device, which carries out a simulated experiment for space gravitational biology in a large gradient and intense magnetic field. A superconducting magnet can be fixed on a horizontal ground, and a temperature-controlled water gall can be inserted vertically into the columnar cavum which is arranged in the middle of the superconducting magnet. The bottom of the lifter carrier is positioned in the bottom of the superconducting magnet. The tray of the lifter carrier is inserted into the columnar cavum of the superconducting magnet with the temperature-controlled gall. The data monitoring plant is installed at the bottom of the lifter carrier, and the lifter carrier is connected with a data display device by leads. The ends of the cavum of the superconducting magnet are respectively sealed by the closing plug of the gas control equipment. A CCD videography is positioned in the center of the ring-shaped illuminating ray. The two insert into the cavum synchronously and are positioned above the tray. The device provided by the invention can achieve the precise measurement and control of temperature, humidity, model position, gravity standard, magnetic density and other aggregative indicators. The device can meet the requirements of the simulated experiment condition relating to space life sciences within the range from molecules, cells, tissues, organs to the overall level.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Externally-cooled electronic condenser
The invention discloses an externally-cooled electronic condenser and solves the problem that the existing water-cooled condenser wastes a great deal of tap water. The outside of a condensing tube is isolated from the ambient heat, and the larger cooling area leads to evident increase in distillation or reflux condensing efficiency. The externally-cooled electronic condenser comprises a tubular electronic refrigerating element, a tubular air radiator and a finned condensing tube. During operating, the cold end of the tubular electronic refrigerating element sucks interior heat of the finned condensing tube to lower the temperature, the distilled or reflux steam is condensed, the hot end of the tubular electronic refrigerating element releases the heat which is guided out by air from the tubular air radiator, and low condensing temperature is continuously kept for the cold end; according to the condensing temperature of fraction, by adjusting input current of the externally-cooled electronic condenser, the condensing temperature can be under high-precision control; the existing distillation or reflux test water-cooled condensation is replaced; the externally-cooled electronic condenser is simple in structure, easy to manufacture, easy to popularize and significant to the building of water-saving society.
Owner:李景峰 +1
Special thin plate clamping device for manufacturing metal material indentations
InactiveCN109738278AImprove accuracyAdaptableWork holdersStrength propertiesMetallic materialsEngineering
The invention provides a special thin plate clamping device for manufacturing metal material indentations. The special thin plate clamping device comprises an upper pressing plate, a base and a butterfly nut, the upper pressing plate comprises a concave platform, a circular hollow portion is arranged at the middle of the concave platform, and two circular holes are formed in both sides of the upper pressing plate for fixing the butterfly nut; and the base is a thin plate, which is provided with two double-screw bolts on the both sides for fixing the butterfly nut. By screwing the butterfly nut, the upper pressing plate drops, an equipment pressing head passes through the circular hollow portion at the center of the concave table of the upper pressing plate to test a thin plate workpiece. The thin plate clamping device provided by the invention can fix the thin plate workpiece that has insufficient flatness and is not machined in advance, so that the thin plate workpiece does not generate unnecessary movement in the test, thereby improving the accuracy of an experimental result. The thin plate clamping device provided by the invention has the advantages of simple structure and convenient use, and can match with indentation manufacturing equipment to perform mechanical experimental measurement on the thin plate workpiece.
Owner:上海出入境检验检疫局工业品与原材料检测技术中心 +2
Rigid cylinder vortex-induced vibration test device
The invention discloses a rigid cylinder vortex-induced vibration test device which comprises an outer fixing frame, an inner rigid supporting assembly and an experimental cylinder, the outer fixing frame comprises a fixing frame body and a first set of sliding rails arranged in the water flow direction, and the first set of sliding rails are connected to the fixing frame body; the inner rigid supporting assembly comprises a movable rigid supporting frame, a second set of sliding rails, a first set of elastic pieces and a second set of elastic pieces, the movable rigid supporting frame is arranged perpendicular to the water flow direction, and the movable rigid supporting frame is movably connected to the first set of sliding rails; the first set of elastic pieces are arranged on the two sides of the movable rigid supporting frame in the water flow direction and connected with the fixing frame body, the second set of sliding rails are arranged in the vertical direction and connected with the movable rigid supporting frame, and the second set of elastic pieces are limited in the second set of sliding rails. The experimental cylinder is connected with the movable rigid support framethrough the second set of elastic pieces. According to the invention, the blocking phenomenon of the experimental rigid cylinder in the vortex-induced vibration test is solved.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Detecting device for detecting sealing property of bearing sealing elements
InactiveCN109632207AAct as a fixed supportAccurate dataMeasurement of fluid loss/gain rateEngineeringAtmospheric pressure
The invention discloses a detecting device for detecting the sealing property of bearing sealing elements. The detecting device comprises a detecting seat, the detecting seat is internally provided with a detecting cavity, a rotating main shaft penetrates into the detecting cavity, the rotating main shaft is rotationally installed on the detecting seat, the rotating main shaft is connected with apower mechanism for driving the rotating main shaft to rotate, a fixing sleeve is further fixed in the detecting cavity, the fixing sleeve is arranged on the rotating main shaft in a sleeving manner,and a mounting cavity is formed between the fixing sleeve and the rotating main shaft. A test assembly includes a test bearing and two test sealing elements, the two test sealing elements are arrangedon the two sides of the test bearing, an air pressure detector is arranged outside the detecting seat, an air pressure detecting probe of the air pressure detector is inserted into the test sealing elements, the detecting seat is connected with a medium supply device, and the detecting cavity is further provided with a medium outlet. The sealing performance of the bearing sealing elements under various environments can be tested, operation is simple, the detection efficiency is high, and noise is small.
Owner:C&U CO LTD +2
Volumetric flask fixture
InactiveCN109351381APrevent floatingGuaranteed accuracySupporting apparatusCleaning using liquidsEngineeringVolumetric flask
The invention provides a volumetric flask fixture, comprising a main base and an anti-floating support mounted on the main base; the main base includes a bottom base and a connection rod vertically fixed onto the bottom base; the anti-floating support includes a first vertical rod vertically connected to the connection rod, a transverse rod horizontally arranged and having one end connected to theupper end of the first vertical rod, a second vertical rod having the upper end connected with the other end of the transverse rod, and an anti-floating member arranged at the lower end of the secondvertical rod; the anti-floating member is provided with an opening allowing a bottleneck of the volumetric flask to pass through; the anti-floating member applies, along the edge of the opening, a downward pressure to the belly of the volumetric flask in order to prevent the volumetric flask from floating on a liquid; when the volumetric flask is immersed in the liquid to carry out ultrasonic washing, the anti-floating member can overcome floating force that the volumetric flask bears and enable the volumetric flask to be constantly immersed in the liquid, thereby avoiding floating; ultrasonic washing effect is guaranteed, and therefore, smooth progress of an experiment and accuracy of test data are guaranteed.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Animal irradiation experiment device
PendingCN113834830AThe solution cannot be fixedGuaranteed tightnessMaterial analysis using wave/particle radiationAnimal scienceDevice material
The invention discloses an animal irradiation experiment device which comprises a box body, wherein a box cover is arranged on the box body, and the box cover covers the box body to form a closed environment; an animal fixing plate is arranged on the upper surface of a bottom plate of the box body, and a plurality of animal fixing beds are arranged on the animal fixing plate in parallel; and the box body, the box cover and the animal fixing beds are all made of polymethyl methacrylate materials which are light-permeable and can resist high-pressure disinfection and sterilization, and a ventilation window is made of airtight and breathable nuclear track membrane materials. The disclosed animal irradiation experiment device can be used for sufficiently fixing and positioning an experimental animal and ensuring that an experiment is smoothly carried out; and a closed and clean environment needed in experimental animal transfer is guaranteed, and the experimental device materials are guaranteed to have small influence on ray attenuation and can tolerate repeated high-pressure disinfection and sterilization.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
Small-size high-speed dispersion machine for laboratory
InactiveCN107583516AEasy to observeEasy to fixRotary stirring mixersMixer accessoriesEngineeringMixing effect
The invention discloses a small-size high-speed dispersion machine for a laboratory. The small-size high-speed dispersion machine comprises a base and a support rod, wherein the support rod is fixed on the base; a lifting frame capable of moving up and down is arranged on the support rod; a stirrer is fixedly connected with the end part of the lifting frame; the dispersion machine further comprises a fixer for fixing a material drum; the fixer is connected with the support rod; a material drum mounting position corresponding to the stirrer is formed on the end part of the fixer. The small-sizehigh-speed dispersion machine has high safety, is capable of effectively preventing accident from happening and is suitable for dispersion and mixing of the materials in the liquid. The small-size high-speed dispersion machine has the advantages of simple structure, high dispersion efficiency, excellent mixing effect, low manufacturing cost and convenience in popularization.
Owner:方文祥
Arginine-based method for preventing aggregation of omalizumab
InactiveCN111116751ARigorous thinkingThe experiment went wellPharmaceutical delivery mechanismAntibody ingredientsChromatographic columnBiology
The invention discloses an arginine-based method for preventing aggregation of omalizumab. The arginine-based method for preventing aggregation of the omalizumab comprises the following steps: (1) preparing instruments: before experiments, preparing an electronic scale, a pH meter, a chromatographic system, a pipette, a rProtein A filler and an XK50 / 20 chromatographic column (As is 1.114, HETP is0.0213, CV is 175, and H is 8.9); (2) preparing consumable materials: preparing the materials, and producing solutions for the experiments; (3) conducting the chromatography experiment: conducting thechromatography experiment through the steps of rinsing, balancing, sample loading, leaching, eluting, regenerating, balancing before disinfecting, disinfecting, balancing after disinfecting, secondary rinsing and storing; (4) conducting the aggregation-preventing experiment: adjusting a pH value through diluted hydrochloric acid, and after centrifugal treatment is conducted, adding Tris dropwisefor observation; (5) analyzing results: analyzing the results obtained at different contents; and (6) drawing a conclusion from analysis of the results. The arginine-based method for preventing aggregation of the omalizumab covers preparation of the instruments and the consumable materials, the chromatography experiment, the aggregation-preventing experiment and drawing of the conclusion from accurate analysis of the results, the arginine-based method for preventing aggregation of the omalizumab can be reasonably and accurately expressed, and thinking is precise.
Owner:北大未名(合肥)生物制药有限公司
Experimental apparatus for researching influence of non-biological factors to armadillium vulgare
InactiveCN108665768ASee the quantitySolve the problem of inconvenient counting when drilling into the soilAnimal housingTeaching apparatusCarbon filmElectrical resistance and conductance
The invention relates to an experimental apparatus for researching influence of non-biological factors to armadillium vulgare. The experimental apparatus comprises two same cylindrical experimental platforms and at least three experimental platform covers, and further comprises temperature sensors, humidity sensors and a carbon film resistor, wherein the upper ends of the experimental platforms are opened; openings of same size are formed in the parts, which are in correspondence, of the side faces of the two experimental platforms; the two openings are connected via a channel that the upper end is opened; a channel cap is arranged at the upper end of the channel; a medium-density sponge is arranged on the bottom surface of the interior of each experimental platform; at least one of the atleast three experimental platform covers are different from the other two ones in color; rotary doors are fixedly connected to the lower ends of the experimental platform covers; the rotary doors arelarger than the openings and can completely fit to the openings, so that the openings can be covered or completely opened by rotating the experimental platform covers; and the temperature sensors, the humidity sensors and the carbon film resistor are inserted into the experimental platforms. With the application of the technical solution on learning knowledge of students of junior and senior highschools or within an acceptable range of knowledge capability of the students of junior and senior high schools, operability and interesting of the students in biology experiments can be improved.
Owner:江苏苏威尔科技有限公司
Water-saving direct cooling heat pipe electric condenser and experimental device
InactiveCN101966474AReduce high investmentLow cooling temperatureHeating or cooling apparatusEnergy industryRotary evaporatorDistillation
The invention discloses a water-saving direct cooling heat pipe electric condenser and an experimental device, and can be widely applied to research institutions, colleges and universities and enterprise research and development institutions in chemical, chemical engineering, pharmacy, foods, environmental and other industries. In an experiment process, the heat pipe electric condenser and the experimental device do not require cooling water, the condenser is combined by a heat pipe electric refrigerator and a matched condensing tube, directly cools the experimental device, and can be used for redistillation, distillation and stirring reaction experimental devices, and directly cooling of a rotary evaporator device and a water distiller device. The heat pipe electric condenser has no pollution or noise, does not require cooling medium, can completely solve the problem of tap water resource waste, guarantees smooth experiment and the like, realizes cooling temperature lower than that of tap water cooling and non-refrigeration circulating water cooling, can realize control of high-accuracy condensing temperature by controlling input current of an electric refrigerating element, and has the advantages of simple device structure and easy generalization and popularization.
Owner:李景峰 +1
Murine animal experiment method for orthodontic distal movement of central incisor of upper jaw
PendingCN114224550AFavorable directional tractionReduce the chance of sheddingSurgical veterinarySurgeryUpper anterior
The invention discloses a mouse experiment method for orthodontic distal moving upper anterior teeth. The mouse experiment method comprises the following steps: S1, preparing an orthodontic distal moving upper anterior tooth retention groove: preparing the retention groove of about 0.08 mm in a physiological range of the thickness of enamel on the lip side of the upper anterior teeth; and S2, establishing a distal movement model of the upper anterior teeth of the mouse by using shape memory characteristics of the orthodontic nickel-titanium wire and an orthodontic ligation technology. The invention successfully constructs a stable, tissue-injury-free and simple mouse anterior tooth orthodontic movement model on the basis of a clinically common nickel-titanium wire and ligation technology. The mouse orthodontic tooth movement model effectively fills the blank that no mouse orthodontic tooth movement model capable of meeting experimental requirements exists at the present stage, the dilemma that animal experimental mechanism exploration is difficult to carry out due to the fact that no effective animal model guarantee exists is solved to a great extent, and the difficulty and complexity of related experiments are reduced to a certain extent; the orthodontic force is continuously distributed on teeth, clinical orthodontic behaviors are effectively simulated, and the orthodontic device can be popularized and used on a large scale.
Owner:THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
Caco-2 cell monolayer membrane forming culture method
ActiveCN111500543ACell state improvementThe experiment went wellCulture processTumor/cancer cellsPenicillinStreptomycin
The invention provides a Caco-2 cell monolayer membrane forming culture method. The method comprises the following steps: culturing Caco-2 cells by using an MEM culture medium containing 20% of fetalcalf serum and 1% of penicillin / streptomycin, when the cell convergence degree reaches 60-70%, performing pancreatin digestion, carrying out continuous subculture for 2-3 times, and after the cells are cultured to the logarithmic phase, carrying out excessive inoculation cell culture and cell adherent expansion, cleaning non-adherent cells with PBS to obtain Caco-2 monolayer membrane cells. A Caco-2 monolayer membrane model established by the method is good in state, and is arranged in a paving stone inlay shape, the cells are tightly connected, cavitation is basically not formed, the Caco-2 cell model is reliable and stable, the repeatability is good, and an experimental foundation is laid for subsequent drug absorption and transfer research.
Owner:WUHAN PROCELL LIFE SCI & TECH CO LTD
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