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42results about How to "Reduce experimental risk" patented technology

Surveymeter for parallelism of optical axis of visible and infrared light wave

The invention relates to a surveymeter for parallelism of optical axis of visible and infrared light wave, comprising an infrared light part and a visible light part. Firstly, aiming is operated by employing visible light, the visible light emitted by a visible light source lightens up a cross wire by a cross-linegraticule, an emergent visible cross wire image is formed on a visible light CCD, after being reflexed by an infrared beam splitter, a secondary mirror, a primary mirror and a standard flat mirror, the emergent visible light returns to the visible light CCD by the optical devices and forms a return cross wire image, and a system is adjusted to superpose the emergent visible cross wire image and the return cross wire image, thereby completing instrument aiming. Then infrared light is employed for detecting, iraser emitted by an infrared laser passes through a series of optical elements of the infrared light part, and an emergent infrared spot and a return infrared spot on an infrared CCD are extracted by measurement software. Error value of the parallelism can be obtained by formula computing. The surveymeter of the invention adopts the visible light to aim and the infrared light to detect the parallelism error, thereby reducing experiment risk while improving measurement precision.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

Micro air vehicle experimental device

The invention discloses a micro air vehicle experimental device and relates to experiment and measurement technology. The device can be used in an air vehicle experiment and parameter measurement and consists of a support, a pallet capable of rotating in three dimensions, a movable balance weight and a safety limit element. The support consists of a cross beam and a support rod, wherein the cross beam and the support both have fixing holes and fixing bolts so as to be fixed on a horizontal plane to ensure the stability of the experimental device. The rotating pallet is used to carry the air vehicle receiving experiment, the air vehicle can be fixed on the pallet through a bolt, and the pallet and the air vehicle can rotate on three vertical axes in space under the drive of a spherical joint. The experimental device of the invention is designed with the attitude motion and the degrees of the freedoms of motion and position in the three dimensions of the body of the air vehicle according to the spaceflight characteristics of the air vehicle and realizes flight experiment and the measurement of static and dynamic parameters of the air vehicle under the condition of ensuring the safety of the air vehicle.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Hand-hold virtual experimental laboratory system and implementing method thereof

This invention provides one handle virtual experiment chamber system, which comprises signal control process unit and signal control process unit connected input unit, memory unit and display unit to receive user input and operation orders, wherein, the signal control process unit further comprises central processor unit and one virtual experiment platform module for ratification operation. This invention provides one handle virtual experiment chamber realizing method.
Owner:DONGGUAN BUBUGAO EDUCATION ELECTRONICS PROD

Ground experiment system for verifying of vision guidance landing algorithm of flight vehicle

InactiveCN102506899AVisually reflect performance indicatorsReduce experimental riskMeasurement devicesAir movementFlight vehicle
The invention discloses a ground experiment system for verifying of vision guidance landing algorithm of a flight vehicle. The ground experiment system includes a motion drive platform and a main shaft arranged on the motion drive platform, wherein a battery and electronic equipment are arranged on the motion drive platform; a trace and course motion drive assembly is arranged at the lower end of the motion drive platform; a camera is arranged on the main shaft; a tilt-rotating platform is sleeved on the main shaft; the tilt-rotating and the main shaft are connected through a global hinge; and an attitude motion drive assembly is arranged at the lower end of the tilt-rotating platform. The ground experiment system utilizes the ground experiment equipment to simulate the flying attitude and trace variation of the flight vehicle in the air, so as to verify the vision guidance landing algorithm of the flight vehicle.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Kit using single cell gel electrophoresis for detecting cell DNA damage and method

ActiveCN106018529AReduce physical hazardsThe implementation process is simple and easy to controlMaterial analysis by electric/magnetic meansFluorescence microscopeSample image
The invention provides a kit using single cell gel electrophoresis for detecting cell DNA damage and a method. The method includes gel laying, splitting, unwinding, electrophoresis, neutralizing and washing, drying and dyeing, a fluorescence microscope is used for observing a dyeing result and taking photos, and the damage degree of cell DNA is analyzed and evaluated. As three layers of gel need to be laid on a glass slide during sample preparation, a traditional single cell gel electrophoresis technology has the disadvantages of being complex in operation and prone to degumming, and sample images are unclear; while only one layer of gel needs to be laid on a glass slide, the kit has the advantages of being simple in sample preparing process, low in degumming rate, easy to operate, low in experiment cost and the like.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI

Preparation method and application of sulfur-doped graphite-phase carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst

The invention provides a sulfur-doped graphite-like carbon nitride nanosheet loaded graphene and ferroferric oxide composite magnetic photocatalyst. A sulfur-doped graphite-like carbon nitride nanosheet is taken as a carrier, and graphene and ferroferric oxide particles are modified on the sulfur-doped graphite-like carbon nitride nanosheet. The preparation method comprises the following steps: preparing sulfur-doped graphite-like carbon nitride nanosheets by using thiourea through high-temperature pyrolysis, preparing a sulfur-doped graphite-like carbon nitride loaded graphene composite material by using an impregnation method, and preparing the sulfur-doped graphite-like carbon nitride loaded graphene and ferroferric oxide composite photocatalyst material by using an alkaline-thermal coprecipitation method. The composite magnetic photocatalyst has the advantages of high photocatalytic activity, good stability, magnetic force and easy recovery, and the preparation process has the advantages of simple operation, low cost and good safety. The composite magnetic photocatalyst can be used for treating wastewater containing various antibiotics and is good in stability and practicability, high in efficiency, easy and convenient to operate, low in cost and high in recycling value.
Owner:TONGJI UNIV

Experiment table for testing hydraulic servo system

The invention discloses an experiment table for testing a hydraulic servo system. The experiment table comprises a base, a first differential hydraulic cylinder driving unit, a second differential hydraulic cylinder driving unit, a third support lug, a fourth support lug, a sliding table and a supporting rod, wherein the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit are symmetrically fixed on the base along the longitudinal direction; the third support lug and the fourth support lug are used for fixing the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit on the base respectively; the sliding table is positioned between the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit; the sliding table is connected with the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit respectively through a first connecting block and a second connecting block; the supporting rod penetrates the side central position of the sliding table along the transverse direction; and loads are arranged on the supporting rod and on the two sides of the sliding table. When the experiment table is used for performing hydraulic pressure servo control experiment research and hydraulic system position servo control research, an experiment on an actual heavy-load big-inertia equipment mechanical system can be moved to a lab, so that the experiment cost and risk can be largely reduced.
Owner:TSINGHUA UNIV

Method for measuring concentration of phenylephrine in plasma by LC-MS/MS, and pretreatment method of sample

The invention relates to the technical field of medical detection, and specifically relates to a method for measuring the concentration of phenylephrine in plasma by LC-MS / MS. The method comprises thefollowing steps: primary extraction: adding an internal standard working solution and an extracting solution into a sample, centrifugally layering the solution after mixing the solutions uniformly, and collecting the supernatant to obtain first supernatant; derivatization reaction: concentrating and drying the first supernatant, adding a NaHCO3 buffer salt for dissolution, and then adding an acetonitrile solution of dansyl chloride to perform a derivatization reaction; and secondary extraction: adding the extracting solution into the reaction solution after the derivatization reaction for secondary extraction, centrifuging to obtain second supernatant, concentrating and drying the second supernatant, and redissolving the product to obtain a sample solution. By adoption of the pretreatment method of the sample provided by the invention, the extraction rate of low-level phenylephrine can be maximally improved, the interference of a plasma matrix is effectively removed, the specificityis improved, the minimum detection limit is reduced to 0.02ng / ml, and the sensitivity is increased to 0.1nM to adapt to the detection requirements of the concentration of the low-concentration phenylephrine in drug clinical studies.
Owner:CHINA RESOURCES SANJIU MEDICAL & PHARMA

Solvent-free hydrothermal preparation method of carbon material

The invention belongs to the field of preparation of porous materials, and mainly relates to preparation of solvent-free hydrothermal preparation method of a carbon material, which comprises the following steps: mixing tannic acid, vanillin and nano calcium carbonate, dropwise adding a small amount of dilute sulfuric acid, and grinding until the surface is wet; putting the ground sample into a vacuum drying oven for reaction; carbonizing the carbon material precursor in a nitrogen atmosphere, grinding and crushing the precursor, treating the precursor with diluted hydrochloric acid, drying theprecursor, treating with distilled water, and drying the precursor to obtain the carbon material prepared by the solvent-free hydrothermal method. According to the method, solid-solid mixing is carried out for hydrothermal reaction, wherein no solvent is added when the hydrothermal reaction is used for preparing the carbon material, and experiment risks are reduced, and a carbon material precursor is directly obtained after the experimental reaction. The prepared carbon material has good specific surface area and uniform pore size distribution, and can be further used for loading other metalmaterials.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1

Preparation method of ambroxol hydrochloride impurity reference substance

The invention discloses a preparation method of an ambroxol hydrochloride impurity reference substance. The method comprises the following steps: firstly, dissolving ambroxol hydrochloride in an appropriate amount of dichloromethane solution, then adding a quantitative aqueous solution of sodium hydrogencarbonate for uniform stirring to obtain free ambroxol, separating, drying and concentrating the organic phase, dissolving the concentrated solution in the alcohol solution, then refluxing with excess orthoformate to obtain a crude product of (1R, 4R)-4-(6,8-dibromo-3,4-dihydroquinazoline)-cyclohexanol after condensation, and obtaining a pure product after the crude product is purified by silica gel column chromatography. The invention has the creative application of orthoformate as a condensing agent. Compared with other condensing agents reported in the literature, the orthoformate has the advantages such as good stability, high safety, low cost, high product yield and easy purification.
Owner:SHANGLUO UNIV

Self-cleaning fireproof system for plasma VOCs degradation device

ActiveCN111298608ASolve the problem of difficult to deal with degraded tarSimple processGas treatmentDispersed particle separationFirefightingEnvironmental engineering
The invention discloses a self-cleaning fireproof system for a plasma VOCs degradation device. The self-cleaning fireproof system is characterized by comprising a double-dielectric barrier discharge plasma VOCs degradation subsystem, a gas uniform distribution subsystem, a tar cleaning subsystem and an emergency fire extinguishing subsystem. The double-dielectric barrier discharge plasma VOCs degradation subsystem is used for degrading VOCs entering the reactor; the gas uniform distribution subsystem is used for dispersing gas entering the reaction device; the tar cleaning subsystem is used for cleaning tar which is degraded by plasmas and then accumulated in the reaction device; and the emergency fire-fighting subsystem is used for discharging water and fighting fire when an emergency fire occurs. According to the self-cleaning fireproof system for the plasma VOCs degradation device, the problem that post-treatment of degradation products is difficult in the existing plasma VOCs removal technology is solved, and the safety of plasma VOCs degradation equipment is improved.
Owner:YUNNAN UNIV

Preparation method of trans-1, 2-diaminomethyl cyclobutane and hydrochloride thereof

The invention belongs to the technical field of medicine synthesis, and particularly relates to a preparation method of trans-1, 2-diaminomethyl cyclobutane and hydrochloride thereof, which comprises a method for preparing trans-1, 2-diaminomethyl cyclobutane and hydrochloride thereof by taking trans-1, 2-cyclosuccinic acid as a raw material and reacting with benzylamine and a red aluminum solution. The method provided by the invention has the advantages of easily available raw materials, strong operability, high safety, avoidance of high-risk operation and reduction of experimental risks, and is more suitable for industrial production.
Owner:SICHUAN HUIYU PHARMA +1

Test-tube taking and placing device

The invention provides a test tube pick-and-place device, which includes an operating ring, a transverse rod, a moving rod, and a clamping ring; the operating ring is a vertically arranged cylindrical ring, and a fixed ring is arranged on the bottom edge of the horizontal rod; Horizontally arranged above the fixed ring; the moving rod passes through the fixed ring from the vertical direction; the clamping ring is an arc-shaped ring with an angle less than 180°, and the two clamping rings are arranged horizontally opposite and connected by the end of the elastic structure A pull ring is provided at the arc top of the clamping ring; the top end of the moving rod is movably set in the ring at the end of the transverse rod, and the bottom end is movably set in the pull ring. The invention realizes the non-manual operation of individual pick-and-place tubes in a sterile environment through a purely mechanical, low-cost, and easy-to-maintain method, and is stable and reliable, can effectively reduce experimental risks and solve disinfection and sterilization resources, has a simple structure, and is easy to maintain. The batch strain experiment of small and medium-sized enterprises provides a reliable guarantee.
Owner:GUIZHOU LIPING QIANXIANGYUAN GREASE CO LTD

A low-speed wind tunnel model flight test system and method

InactiveCN105784318BAccurate attitude measurementEasy to set upAerodynamic testingLow speedAircraft flight mechanics
The present invention discloses a low-speed wind tunnel model flying experimental system and a method. The system comprises an aircraft dynamic similarity ratio model, a model aircraft attitude measurement system, a rudder surface movement driving system, an engine power simulation system, a flight control system, a flight operation system, a wind tunnel operation system, and a safety protection system. The experimental system of present invention is equipped with the safety protection system, thus the aerodynamic characteristics of the model are not affected and the six-degree-of-freedom flying state of a real aircraft can be simulated, the thrust simulation of an engine can be realized, the flight control system and the flight operation system are added, the six-degree-of-freedom flying of the aircraft model in a wind tunnel testing segment can be realized through pilot operation, the aircraft air flying movement environment is fully simulated in the wind tunnel, and the pneumatic, flight mechanics and flight control characteristics of the aircraft can be researched in the wind tunnel.
Owner:LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT

Method for self-assembling homogeneous/heterojunction nano-film by utilizing fluid boundary layer effect

The invention discloses a method for self-assembling a homogeneous / heterojunction nano-film by utilizing a fluid boundary layer effect. The method comprises the following steps of: dissolving a nano-material in an ethanol solution, performing ultrasonic stripping and dispersion by using an ultrasonic crusher, continuously centrifuging to improve the uniformity, slowly dripping nano-material dispersion liquid into a glass dish filled with trichloromethane, wherein the nano-material forms a film on the surface of the absolute ethyl alcohol solution and the interface of the ethyl alcohol solution and the trichloromethane solution; and obliquely inserting a substrate wetted by distilled water into the liquid level, and slowly lifting to form a film. The method is low in cost, simple and convenient to operate and wide in application range.
Owner:NANKAI UNIV

A test tube operating system that is convenient for individual pick-and-place

The invention provides a testing-tube operation system convenient for individual taking and placement. The testing-tube operation system comprises a clamping device, a transmission device and a flatly taking device, wherein the transmission device comprises a control box, a transmission rod, a forward and reversal motor and a time relay; the time relay is connected with the forward and reversal motor by a circuit; an output shaft of the forward and reversal motor is connected with an input shaft of the control box in a driving manner; an output shaft of the control box is a transmission rod; the far end of the transmission rod is provided with a gear structure which is meshed with a gear at the lower section of a driving rod in the clamping device; the driving rod in the clamping device is of a three-section structure including an upper section, a middle section and a lower section, wherein a lead screw is arranged at the upper section, a nut on the lead screw is sheathed into a horizontal gear of an operation wheel group, a gear is horizontally arranged on a lower-section rod and is meshed with a gear at the end part of the transmission rod, the middle section and the upper section are connected by a sheathing bearing, and the middle section and the lower section are connected by a reversal gear group; and the flatly taking device is arranged above the clamping device.
Owner:李军

Method for measuring phenylephrine concentration by lc-ms/ms and sample pretreatment method

The present invention relates to the technical field of medical testing, in particular to a method for measuring the concentration of phenylephrine by LC-MS / MS, which includes one extraction: adding an internal standard working solution and an extracting solution to the sample, mixing them uniformly and then centrifuging and stratifying , collect the supernatant to obtain the first supernatant; derivation reaction: after the first supernatant is concentrated and dried, add NaHCO 3 The buffer salt is dissolved, and then the acetonitrile solution of dansyl chloride is added to carry out the derivatization reaction; secondary extraction: adding the extract solution to the reaction solution after the derivatization reaction for secondary extraction, centrifuging to obtain the second supernatant, and the second supernatant After the liquid is concentrated and dried, it is redissolved to obtain a sample solution; the sample pretreatment method of the present invention can maximize the extraction rate of the low-content phenylephrine by the pretreatment method, effectively remove the interference of the plasma matrix, and improve the specificity. The minimum detection limit is reduced to 0.02ng / ml, and the sensitivity is increased to 0.1nM, so as to adapt to the detection requirements of low-concentration phenylephrine in drug clinical research.
Owner:CHINA RESOURCES SANJIU MEDICAL & PHARMA

Method for preparing regular petal-shaped WO3/Fe2O3

The invention discloses a method for preparing regular petal-shaped WO3 / Fe2O3, and relates to a method for preparing WO3 / Fe2O3, which comprises the following steps: by taking hydrazine hydrate, methylbenzene, ferric acetylacetonate, oleic acid and sodium tungstate as main raw materials, adding an acidic solution to adjust the pH value, putting into a reaction kettle at 130 DEG C, taking out the solution after 24 hours, cooling at room temperature, adding ethanol into the obtained product Fe3O4, carrying out ultrasonic treatment, cleaning with ethanol under the help of a magnet, and drying to obtain the regular petal-shaped WO3 / Fe2O3. And storing in ethanol for later use. Taking 5 mmol of sodium tungstate, putting the sodium tungstate into a reaction kettle lining, stirring and dissolving, adjusting the pH value to be about 4.5 by using an acid solution, adding Fe3O4 soaked in ethanol, reacting at 160 DEG C for 96 hours, taking out the solution, cooling at room temperature, centrifugally cleaning the obtained product by using deionized water, putting into a drying oven for vacuum drying at 65 DEG C, and grinding the treated solid in an agate mortar to obtain the final product WO3 / Fe2O3. The WO3 / Fe2O3 prepared by the invention has the characteristics of small size, uniform morphology, high yield, low cost, simple synthesis process, environmental friendliness, no toxicity, excellent chemical stability, magnetism and the like, and has wide application prospects.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY

Surveymeter for parallelism of optical axis of visible light and infrared light wave

The invention relates to a surveymeter for parallelism of optical axis of visible and infrared light wave, comprising an infrared light part and a visible light part. Firstly, aiming is operated by employing visible light, the visible light emitted by a visible light source lightens up a cross wire by a cross-linegraticule, an emergent visible cross wire image is formed on a visible light CCD, after being reflexed by an infrared beam splitter, a secondary mirror, a primary mirror and a standard flat mirror, the emergent visible light returns to the visible light CCD by the optical devices andforms a return cross wire image, and a system is adjusted to superpose the emergent visible cross wire image and the return cross wire image, thereby completing instrument aiming. Then infrared lightis employed for detecting, iraser emitted by an infrared laser passes through a series of optical elements of the infrared light part, and an emergent infrared spot and a return infrared spot on an infrared CCD are extracted by measurement software. Error value of the parallelism can be obtained by formula computing. The surveymeter of the invention adopts the visible light to aim and the infrared light to detect the parallelism error, thereby reducing experiment risk while improving measurement precision.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

A thermoelectric two-field in-situ atmosphere test system under an optical microscope

The invention provides a thermoelectric two-field in-situ atmosphere test system under an optical microscope. The technical solution adopted is a thermoelectric two-field in-situ atmosphere test system under an optical microscope, which includes an optical microscope, an electrical workstation, and a sample stage connected to the electrical workstation. And the gas path system that provides the atmosphere ring mirror for the sample stage chamber, the key is that the sample stage includes an integrated circuit test bench and a chip mounting stage assembly arranged below it and is equipped with an in-situ chip, and the integrated circuit test bench includes a base 1. The probe sealing assembly and the circuit board installed on the base and the probe with the elastic probe limited in the probe sealing assembly. When the circuit board is pressed down, a self-sealing structure is formed between the probe and the electrode of the in-situ chip. The beneficial effect is that the system can complete various types of experiments such as in-situ gas heating, vacuum heating, and electrical experiments under an optical microscope, providing a basis for in-situ transmission experiments, and the operation is simple; the risk of the experiment is low, and the cost is low.
Owner:PEKING UNIV +1

Experiment table for testing hydraulic servo system

The invention discloses an experiment table for testing a hydraulic servo system. The experiment table comprises a base, a first differential hydraulic cylinder driving unit, a second differential hydraulic cylinder driving unit, a third support lug, a fourth support lug, a sliding table and a supporting rod, wherein the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit are symmetrically fixed on the base along the longitudinal direction; the third support lug and the fourth support lug are used for fixing the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit on the base respectively; the sliding table is positioned between the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit; the sliding table is connected with the first differential hydraulic cylinder driving unit and the second differential hydraulic cylinder driving unit respectively through a first connecting block and a second connecting block; the supporting rod penetrates the side central position of the sliding table along the transverse direction; and loads are arranged on the supporting rod and on the two sides of the sliding table. When the experiment table is used for performing hydraulic pressure servo control experiment research and hydraulic system position servo control research, an experiment on an actual heavy-load big-inertia equipment mechanical system can be moved to a lab, so that the experiment cost and risk can be largely reduced.
Owner:TSINGHUA UNIV

Detection method and special detection system for silica precipitation performance of nuclear power plant water filter element

Provided is a detection method for silica separation performance of a filter element of a nuclear power plant water filter. The detection method is the laboratory detection method that the filter element of the nuclear power plant water filter is simulated to determine separated silica in a working state and comprises the steps that a detected filter element is installed in a detection system pipeline, an experimental medium is sampled and submitted for detection regularly under the condition that the experimental medium passes through the filter element at rated flow and the maximum working temperature is kept, whether silica separated out from the filter element exceeds the standard or not is judged through analysis on detection data after detection, and detection is conducted according to the standard of SL 91.2-1994 'determination of silica (dissolved) (hetropoly blue method)'. According to the detection method, simulative detection on silica separated out from the filter element of the nuclear power plant water filter can be achieved at the rated flow at the maximum working temperature in the state that ingredients of the filter element approach to those of the working medium. Therefore, specific running parameters of the filter element can be acquired under the approximate real working condition, the verification efficiency of the filter element performance is improved, and a risk influence of a new filter element product on the running safety of a nuclear power system is reduced.
Owner:HENAN HEJING CLEANING TECH

A test tube holding device

The invention provides a test tube clamping device. The test tube clamping device comprises clamping rings, a tensioning belt, a movable block and a supporting rod, wherein each clamping ring is an arc-shaped semi-ring with an angle smaller than 150 degrees, and the two clamping rings are arranged; the two clamping rings are arranged horizontally and oppositely; the movable block is arranged between edge end parts of the two clamping rings and is close to rear ends of the two clamping rings; the supporting rod is vertically arranged; the movable block is movably fixed at the bottom of the supporting rod; the movable direction of the movable block is vertical to the radial direction of the supporting rod; and the tensioning belt is fixed at the rear ends of the clamping rings and is arranged along the inner sides of the clamping rings, and the movable block is arranged toward one side of the supporting rod. Non-manual operation of separately taking tubes in a sterile environment is realized through a pure mechanical, low-cost and easily-maintaining manner and is stable and reliable; experiment risks can be effectively reduced, and disinfection and sterilization resources are solved; and the test tube clamping device is simple in structure and easy to maintain, and provides reliable guarantees to large-batch strain experiments of middle-size and small-size enterprises.
Owner:无锡锡东大学生创业孵化管理有限公司

Detachable burette convenient for internal cleaning

The invention discloses a detachable burette convenient for internal cleaning, and relates to the technical field of titration equipment. The detachable burette comprises a fixing mechanism; the uppersurface of a first fixing ring is rotationally connected with a first threaded rod; a moving block is in threaded connection with the peripheral side surface of the first threaded rod; one side of the moving block is fixedly connected with a capacity scale; a liquid storage mechanism is in clearance fit with the inner wall of the first fixing ring; an internal thread groove is fixedly connected to the inner wall of a first liquid storage pipe close to the top end; and the upper surface of a hollow circular truncated cone is fixedly connected with a second liquid storage pipe. Through the design of the first liquid storage pipe, the control valve, the second liquid storage pipe, the third liquid storage pipe and the fixing mechanism, the burette can be rapidly disassembled and assembled, the interior of the burette is convenient to clean, the burette cleaning efficiency is greatly improved, meanwhile, through the arrangement of the control valve, a titration reagent can be convenientlyadded into the burette, the phenomenon that a reagent bottle is directly held by a hand to cause flow backward is reduced, and reagent leakage is effectively avoided.
Owner:THE AFFILIATED HOSPITAL OF QINGDAO UNIV

Synthesis method of azo small molecules for zinc oxide nanoparticle stable ligands

The invention discloses a synthesis method of azo small molecules for zinc oxide nanoparticle stable ligands. A target molecule AZO-NH2 is synthesized by adopting a two-step method, in the first step, reagents such as 4-phenylazo phenol and N-(6-bromohexyl) phthalimide are used as raw materials to synthesize a white intermediate, in the second step, reagents such as hydrazine hydrate are added into the intermediate obtained in the first step, and the AZO-NH2 is finally obtained through a series of steps such as extraction, drying and column chromatography. Reagents used in the experiment process are all non-toxic reagents, so that the safety of the experiment process can be ensured.
Owner:NINGBO UNIV

Plant root toxicology research device and toxicology research method

The invention provides a device and a method for toxicological research of plant roots. The device comprises a toxicological test chamber and a culture chamber which are detachably connected, wherein the culture chamber is arranged above the toxicological test chamber for toxicological test, the toxicological test chamber comprises a body, at least two butted first partition plates are arranged in the body, the body is divided into at least two cavities by the first partition plates, a sample cavity is reserved at the butted part of the butted first partition plates, and the sample cavity is used for accommodating a plant root. The device has characteristics of simplicity, rapidness, convenience and safety, is not only suitable for research of single factor influence, but also can be used for research of multi-element combination effect, reduces experimental consumables, reduces experimental risks, and improves experimental efficiency.
Owner:XIAN JIAOTONG LIVERPOOL UNIV

Laboratory detection data processing method and system

The invention provides a laboratory detection data processing method and system. The method comprises the steps: enabling a user to send a detection data acquisition request; receiving the detection data acquisition request through experimental equipment, generating a detection instruction, performing data detection of a target experiment, and obtaining to-be-processed experimental data; obtaining to-be-processed experiment data obtained based on a target experiment in a laboratory through an acquisition module; preprocessing the obtained to-be-processed experimental data through a processing module to obtain to-be-detected experimental data; verifying the to-be-detected experimental data through a verification module, and if the to-be-detected experimental data passes the verification, generating a detection result; and providing the detection result to the user through a prompt module. According to the invention, intelligent remote control of the laboratory can be realized, unnecessary human resource waste is avoided, and the experiment risk of experimenters can be effectively reduced.
Owner:江苏威轲科技有限公司
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