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66results about How to "Detection method science" patented technology

Gravity inductive type axis-counting device and method for detecting state of tract district using same

The invention discloses a gravity inductive type axis-counting device and a method for detecting the state of a tract district thereof, relating to a railway transport management device and a management method thereof. The gravity inductive type axis-counting device comprises an axis detector, an axis-counting information processing system, an input-output subsystem and a power supply, wherein the axis detector is composed of a wheel electronic detector and a gravity inductive type sensor unit; the wheel electronic detector consists of an axis-counting CPU unit, a signal processing unit, a sensor power unit and a state detecting unit; the axis-counting information processing unit comprises a CPU unit, a communication unit, and an I / O unit; and the input-output subsystem consists of a dynamic drive assembly unit, a relay and a button. In the method, a wheel signal is detected by a gravity inductive type sensor arranged on a rail, and is transmitted to the wheel electronic detector and the axis-counting information processing unit for processing, thus judging the state of the tract district. The invention has the advantages of accurate detection result, high reliability, scientific method and capability of realizing automatic judgment on the idle and occupied states of the tract district.
Owner:中国铁路南宁局集团有限公司 +1

Semen armeniacae amarae formula granules as well as preparation and quality control methods thereof

The invention belongs to the technical field of traditional Chinese medicine formula granules and particularly relates to semen armeniacae amarae formula granules as well as preparation and quality control methods thereof. The L-amygdalin and D-amygdalin ratio range considering both the curative effect and safety (low toxicity) is determined through study on the ratio of L-amygdalin to D-amygdalin in classical prescription decoction containing semen armeniacae amarae, semen armeniacae amarae formula granule extraction process parameters capable of guaranteeing the L-amygdalin and D-amygdalin ratio range are determined through process purification, high performance liquid chromatography is used for quantitative analysis in the quality control method, the amygdalin isomerization course is controlled by regulating process parameters such as decoction water amount and decoction time for semen armeniacae amarae decoction pieces during preparation, the semen armeniacae amarae formula granules meeting the quality requirement are prepared and has the same effect with classical prescriptions, and quality control of the semen armeniacae amarae formula granules is realized.
Owner:安徽九洲方圆制药有限公司

Height distribution detection device and method for PM2.5 mass concentration

The invention discloses a height distribution detection device and method for PM2.5 mass concentration. The device is formed by respectively electrically connecting a PM2.5 particle detector (2) and a CCD lateral scattering laser radar (1) with a data processor (3) through serial interfaces or parallel interfaces. The method comprises the following steps: enabling the PM2.5 particle detector and the CCD lateral scattering laser radar to simultaneously work in the same place, and sending the PM2.5 mass concentration on the ground detected by the PM2.5 particle detector and the aerosol backscattering coefficient retrieved by the CCD lateral scattering laser radar to the data processor together; then, dividing the PM2.5 mass concentration on the ground by the aerosol backscattering coefficient on the ground with the data processor, and thus obtaining a proportionality coefficient; multiplying the proportionality coefficient by the aerosol backscattering coefficient on different heights, and thus obtaining the height distribution of PM2.5 mass concentration. The method can conveniently detect the PM2.5 mass concentration on the different heights and can be widely applied to the fields of the research on the rules of pollutant diffusion, environmental assessment, forecast and governance.
Owner:中国人民解放军陆军军官学院

Method for non-destructively detecting segmented suction resistance of cigarettes

The invention relates to a method for non-destructively detecting segmented suction resistance of cigarettes and belongs to the technical field of cigarette quality detection. The method utilizes thebasic feature of flow conservation and quasi-series of air flows passing through a cigarette, realizes measurement of the suction resistance of each part of the cigarette based on a cigarette suctionresistance measurement method, independently acquires closed suction resistance data of a filter tip section and a cigarette section without mechanically separating the filter tip section and the cigarette section, determines that the permeation resistance of the whole filter tip laser-punched cigarette is composed of five permeation resistance values according to the cigarette suction resistanceformation theoretical basis that the pressure of flows passing through the cigarette is in direct proportion to the amount of flows passing through the cigarette and the ratio is cigarette permeationresistance (unit: Pa. s / ml) which is a physical property parameter, and calculates segmented suction resistance values of all parts of the cigarette. The method can satisfy the actual engineering demands of providing the basic support for cigarette product quality traceability, product design and process optimization.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Data mining information publishing platform

The invention relates to a data mining information publishing platform. According to the invention, two groups of large-pitch threaded moving cylinders mounted in a cylinder are ingeniously utilized.Soil samples are respectively collected. The sampling barrel rotates in the downward moving and sampling process. Sampling efficiency is higher, the change of the vertical position of the cylinder isrealized through the lifting device on the bracket. The second motor realizes transposition of the cylinder. In the transposition process, the blocking device on the right side blocks the outlet end of the sampling cylinder by utilizing a telescopic blocking plate. The falling of the sample in the advancing process of the device is avoided. The cleaning device on the left side is used for cleaningthe sampling barrel which is transposed downwards. The sample detection device automatically detects obtained sample, and information acquisition and data sharing of detection data are realized through signal receiver. the structure is ingenious, the sampling cylinders in the two groups of the moving cylinders alternately perform the sampling work, the automation degree is high, the detection data precision is high, the data sharing can be synchronously performed, the practicality is strong, and the apparatus is worthy of promotion and use.
Owner:HENAN AGRICULTURAL UNIVERSITY

Testing system for generator set

The invention belongs to the technical field of generator detection, and particularly relates to a testing system for a generator set. The system comprises a generator set to be tested, a load cabin connected with the generator set to be tested, and a computer and a remote controller which are connected with the load cabin. The testing system for generator sets can precisely test the output power and the loading capability of various generator sets; the system is used together with the upper computer, so that the intellectualization is realized; the system can automatically complete the specific tests of electrical parameters of the generator set, and can also generate diagrams, curves and detection reports at the same time without manual operation; besides, the system can perform manual tests through a control panel; the system provides a scientific detection method for devices with large-power generator sets; the load cabin of AC400-310K-RL is adopted, so that the system has the combinations of resistive loads and inductive loads, power input is in a sectional manner, loads work in an energy-consuming manner, and heat is dissipated in an air cooling manner, so that the system is convenient to use.
Owner:XIAN RVNUO NEW ENERGY

Dust filtering performance testing method and system of air filter for cab of vehicle on road

The invention relates to the technical field of air filter performance tests, in particular to a dust filtering performance testing method and system of an air filter for a cab of a vehicle on the road. The testing method comprises the following steps of: testing the filter element filtering efficiency, i.e. respectively testing dust particle concentration C1 before a test sample piece is installed and dust particle concentration C2 after the test sample piece is installed; and calculating the filtering efficiency E according to a formula (C1-C2) / C1*100%, namely E=(C1-C2) / C1*100%. The testing method provided by the invention is more scientific and reasonable and can be used for accurately reflecting the dust filtering performance of the air filter, and a testing device provided by the invention has high precision for a testing result, thereby being favorable for controlling the quality of the filter, ensuring that a consumer phases a qualified air filter, and also being beneficial to a producer to continuously improve the production process, the production technology and the quality of products.
Owner:东莞市海莎过滤器有限公司 +1

Method for detecting pollutant production coefficient of deposit in cultivation pond

The invention relates to a method for detecting the pollutant production coefficient of deposit in a cultivation pond. The method comprises the following detection steps of: 1, a deposit collector is a hollow platform container; 2, placing and salvaging the deposit collector, namely, placing the deposit collector in the cultivation pond, salvaging the deposit collector when fishes are captured, and calculating the deposit amount of the whole pond according to the pond area; 3, estimating the deposit mass in the pond, namely, estimating the deposit mass in the deposit collector by using a difference method; 4, determining each pollution index concentration in the deposit, namely, determining the moisture content of the deposit and the major pollution indexes in the deposit; and 5, detecting according to a deposit pollutant production coefficient detection formula. The detection method of the invention is scientific and easy and can accurately detect the pollutant production coefficient of the deposit in the fish cultivation pond and estimate the pollution load of pond cultivation on the pond; and moreover, the detection of the pollutant production coefficient of the deposit in the pond is of great importance to the scientific control on the water quality of the pond, to the estimation of the pollution level of pond cultivation on the pond and the environment outside the pond, and the like.
Owner:FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI

Quick detection method for sulfur dioxide in food

The invention relates to a quick detection method for sulfur dioxide in food. The quick detection method comprises the steps of firstly, preprocessing a sample to be tested, carrying out ultrasonic extraction by adopting an aqueous alkali; then adding water and an acid solution into a distilling flask, connecting the distilling flask with a condensing device, placing an outlet of a condensing pipe into a starch solution added with a small quantity of titrating solution, and finally heating the distilling flask, wherein because sulfur dioxide contained in the sample to be tested can be released from the distilling flask in a heating process and the starch solution added with a small quantity of titrating solution flows through the condensing pipe, the light blue starch solution fades; continuing to dropwise adding a titrating solution until the light blue of the starch solution does not fade, thus judging a titration end point, so as to calculate the content of the sulfur dioxide in the sample to be tested through calculating the consumption quantity of the titrating solution when the titration end point is reached. The quick detection method is simple, is capable of performing qualitative and quantitative detection on the content of the sulfur dioxide in the sample to be tested, accurate in detection result and free of harmful effects to the environment and the detection personnel; the end point is easily judged.
Owner:中山鼎晟生物科技有限公司

Intelligent load resistance box

The invention relates to the technical field of resistance box products, in particular to an intelligent load resistance box which comprises an alternating-current load intelligent control system module, a dry load resistance module, an automatic test module and an input and output module, wherein the dry load resistance module, the automatic test module and the input and output module are electrically connected with the alternating-current load intelligent control system module. Intelligent control can be realized, a generator set can be automatically tested according to preset power and time, a form and a curve graph can be automatically generated, printing is supported, complicated manual operation is completely omitted, a scientific and efficient detection method is provided for the high-power generator set, time for manually monitoring data is saved, the danger of hot-line operation is reduced, and cost is saved.
Owner:HUNAN FUDE ELECTRICAL +1

Discrimination method for cashmere and wool, and marker peptide segment used for method

The invention provides a discrimination method for cashmere and wool and a marker peptide segment used for the method. The discrimination method is a detection technology directed at a specific protein molecular marker; the marker has strong specificity, good stability and high sensitivity and is not interfered by physical and chemical treatment like bleaching and dyeing in production process, so directivity of the marker to cashmere and wool is stable and reliable; and with the method, validity of discrimination and detection of cashmere and wool is high. With the discrimination method and the marker peptide segment, one can rapidly, accurately and objectively determine whether a plush textile contains cashmere and wool or not, and scientific and reliable detection means is provided for quality inspection of the plush textile.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Detection method of Chinese medicinal composition for treating traumatic injuries

The invention relates to a detection method of a Chinese medicinal composition for treating traumatic injuries, and belongs to the technical field of traditional Chinese medicines and natural medicines. On the basis of thin-layer chromatography identification of radix angelicae sinensis, borneol, fructus gardeniae, radix notoginseng and vinegar processed rhizoma corydalis and limit detection of aconitine, thin-layer detection is performed on frankincense and flos chrysanthemi, a high performance liquid chromatography technology is used, and the determination method for the content of the radixnotoginseng taken as a monarch drug of the Chinese medicinal composition is improved; furthermore, the content determination method of cinnabar which is a toxic medicinal material is newly built. Byadopting the detection method of the Chinese medicinal composition for treating the traumatic injuries, disclosed by the invention, the counterfeit phenomenon of one-sided use of a single extract to replace valuable medicinal materials caused by the low control method of the composition is solved, furthermore, the clinical safety and effectiveness are improved, so that the method is not only suitable for the total quality control of the composition in industrial production, but also provides a safe and effective guarantee for clinical medication.
Owner:CHANGCHUN RENMIN PHARMA GROUP

Method for detecting blowby of oven wall of carbonization chamber of coke oven

The invention relates to a method for detecting blowby of the oven wall of a carbonization chamber of a coke oven, belongs to the technical field of coke oven body detection and is used for detecting the blowby of the oven wall of the carbonization chamber of the coke oven. The method has the technical scheme that when the sealing of the oven wall of the carbonization chamber is not tight, SO2 in exhaust gas exhausted by a combustion chamber is mainly caused by combustion of raw gas in blowby from the carbonization chamber to the combustion chamber; the blowby degree of the carbonization chamber of the coke oven can be judged by comparing the quantity of SO2 contained in exhaust gas in the exchange process and the non-exchange process. The practical application effect is good; whether the blowby exists between brick seams of the oven wall of the oven furnace or not can be checked; the method can also be used for guiding the repair on the wall surface of the carbonization chamber of the coke oven, so that the fluctuation amplitude of the content of sulfur dioxide in the exhaust gas generated through coking heating is reduced; the coke oven chimney particulate matter content tends to be stable; the further expansion of cracks is prevented; the service life of an oven body is prolonged; the environment pollution caused by reasons such as oven wall blowby is reduced; the potential safety hazard is eliminated; the economic benefits of enterprises are improved.
Owner:HBIS COMPANY LIMITED HANDAN BRANCH COMPANY

Antibacterial and growth-prompting traditional Chinese medicine composition as well as preparation method and detection method thereof

The invention provides an antibacterial and growth-prompting traditional Chinese medicine composition. The antibacterial and growth-prompting traditional Chinese medicine composition is characterizedby being prepared from the following raw materials in parts by weight: 2 to 10 parts of bacillus subtilis, 5 to 35 parts of Chinese pulsatilla root extract, 5 to 40 parts of radix scutellariae extract, 5 to 35 parts of rhizoma coptidis extract, 30 to 70 parts of folium eucommiae extract, 20 to 50 parts of fructus crataegi extract, 5 to 35 parts of pericarpium citri reticulatae extract, 5 to 35 parts of cortex fraxini extract and 5 to 30 parts of liquorice root extract. The traditional Chinese medicine composition provided by the invention is made into pharmaceutically acceptable preparations:tablets, pills, powder, capsules, granules and liquid. The invention further provides a preparation method and a detection method of the antibacterial and growth-prompting traditional Chinese medicinecomposition. By adopting the antibacterial and growth-prompting traditional Chinese medicine composition, the antibiotics or chemically-synthesized drugs in feed can be reduced or partially substituted, and drug residues of animal products are reduced or avoided; the problem of diarrhea of piglets, weaning piglets, fattening pigs and poultry can be effectively solved, so that the diarrhea rate and death rate of the pigs and poultry are remarkably reduced; the antibacterial and growth-prompting traditional Chinese medicine composition is mainly used for the pigs and the poultry, is used as a mixed feed additive and can be directly added into the feed or a mixing medium for a livestock farm.
Owner:成都威迪特生物科技有限公司

Method for measuring content of selfheal oral liquid

The invention discloses a method for measuring the content of selfheal oral liquid, which comprises the steps of: measuring rosmarinic acid according to high performance liquid chromatography; takingoctadecylsilane chemically bonded silica as a bulking agent, taking methanol-0.5% formic acid (40:60) as a mobile phase, wherein the detection wavelength is 330nm, and the number of theoretical plateis not less than 3000; precisely weighing a proper amount of the reference substance of the formic acid, adding 50% methanol to prepare a solution containing 0.2mg per 1ml, thus obtaining the solution; precisely weighing 2ml of the product, placing the product in a measuring bottle of 25ml, adding 50% methanol for dissolving, diluting the mixture to the scale, shaking evenly, filtering, and takinga subsequent filtrate, thus obtaining the solution; and precisely absorbing 10Mul of reference substance solution and 10Mul of test substance solution respectively, injecting the solutions into liquid chromatograph for measurement, thus obtaining the result. The method has high tested component content, and good stability, and is beneficial to the control on product quality.
Owner:GUIYANG XINTIAN PHARMA CO LTD

Preparation medicine of wind dispelling pain eliminating tablet and its preparation methid, quality control method

A Chinese medicine in the form of tablet for dispelling wind and alleviating pain is prepared from 7 Chinese-medicinal materials including clematis root, wild aconite root, pubescent angelica root, safflower, etc. Its preparing process and quality control method are also disclosed.
Owner:HEFEI YIFAN PHARMA MANAGEMENT

Method for detecting anisotropism P-wave of fractures of working face of mine

InactiveCN102928869AGuide safe productionThe detection results are intuitiveSeismic signal receiversMining engineeringStructural engineering
A method for detecting anisotropism P-wave of fractures of a working face of a mine belongs to a detecting method of a fracture development abnormal area in the working face of the mine. The technical scheme of the method for detecting the P-wave is that (1) trigger points are arranged on one roadway in the working face of the mine; (2) detector groups for receiving elastic P-wave signals are arranged; (3) an original single-cannon earth shake record is obtained; (4) P-wave first break time is picked up; (5) anisotropism parameters of the roadway on one side of a cannon point are calculated; (6) the anisotropism parameters of the roadway on one side of a detection point are calculated; (7) the anisotropism parameters of a concentric transmission point connecting line are calculated; and (8) anisotropism distribution of the fractures of the working face of the mine is obtained. By means of the method, detecting precision of fracture development abnormal bodies in the working face of the mine is improved, quantification detection of development density and development directions of the fractures in the working face of the mine is possible, detection is real and reliable, a detecting method is scientific and simple, a detecting result is quantitative, visual and high in precision, and safety production requirements of the working face of the mine are fully met.
Owner:CHINA UNIV OF MINING & TECH

Qualitative detection method of anti-forgery information attenuation rate of cigarette fluorescent anti-forgery stay wire

InactiveCN103712920AEliminate hidden dangers of illegal infringementGuaranteed qualityColor/spectral properties measurementsUltrasound attenuationFluorescence
The invention discloses a qualitative detection method of anti-forgery information attenuation rate of cigarette fluorescent anti-forgery stay wire. The method utilizes a sunshine imitation cabinet to simulate different sunlight exposure environments under different temperatures and time periods so as to observe the change of a product under different environments; and then carries out detection on the fluorescent strength by using a spectrophotometric color photometer so as to determine the attenuation of the cigarette fluorescent anti-forgery stay wire. The qualitative detection method fills the technical blank in the field of attenuation rate detection of fluorescent anti-forgery materials at present, the detection results can represent recessive anti-forgery information attenuation period, so the qualitative detection method has a positive meaning for early warning in production and scientific using of anti-forgery materials. The method is simple and practicable, the detection result is objective and scientific, and the method is easy to popularize.
Owner:HONGYUN HONGHE TOBACCO (GRP) CO LTD

Automobile turbocharger middle shell cooling hole unblocking and blocking testing device and method

The invention relates to an automobile turbocharger middle shell cooling hole unblocking and blocking testing device, which comprises a workpiece clamping air cylinder, an air inlet positioning head, an air outlet positioning head and a detection air cylinder. At least one air inlet plug is arranged on the air inlet positioning head; at least one air outlet plug is arranged on the air outlet positioning head; and the detection air cylinder stretches out or retracts according to the airflow output from an air outlet main pipe so as to identify unblocking and blocking conditions of a cooling channel in a middle shell. According to the testing method, the testing device is adopted, air is inflated into a cooling hole of the middle shell through an air inlet plug, air exhausted from the cooling hole enters the detection air cylinder, and if the detection air cylinder stretches out or retracts within the set time, it is indicated that the cooling hole is smooth; and if the air cylinder is detected not to extend out within the specified time, the cooling hole is blocked. The structure is simple, operation is free and convenient, results are quick and clear, and the labor intensity of operators is greatly reduced.
Owner:KEHUA HLDG

Compost maturity rapid detection test paper box and use method thereof

PendingCN110967305AOvercome the shortcomings of spectrophotometer and other professional instruments needed for the determination of amino acid contentOvercome the disadvantages of requiring specialized instruments such as spectrophotometersMaterial analysis by observing effect on chemical indicatorColor/spectral properties measurementsBiotechnologyNinhydrin
The invention discloses a compost maturity rapid detection test paper box and a use method thereof. The test paper box comprises ninhydrin test paper, a colorimetric card and a detection container, wherein the ninhydrin test paper is ninhydrin-loaded test paper, wherein the number of the colorimetric cards is multiple, the color of the colorimetric cards is bluish violet, the colorimetric cards are sequentially arranged according to the depth degree of bluish violet, and bluish violet of the colorimetric cards is determined according to bluish violet generated by reaction of amino acid solutions with different concentrations and ninhydrin; and the detection container is provided with volume scales. The compost maturity detection method can be used for simply, conveniently and quickly detecting the maturity on site, is accurate, stable and reliable in maturity detection result and more flexible to use, and is suitable for detecting the maturity of various composts.
Owner:CHONGQING TECH & BUSINESS UNIV

Detection chip for tanshinol related gene, preparation and detection method thereof

The invention discloses a detecting chip, making and detecting method of relative gene of salvia miltiorrhizae, which is characterized by the following: setting astopic probe on the glass to make gene chip; crossing with cDNA of marked sample of salvia miltiorrhizae; scanning result; analyzing expressive quantity of relative gene of salvia miltiorrhizae; fitting for obtaining functional information to pave the base to study salvia miltiorrhizae.
Owner:TIANJIN UNIV OF TRADITIONAL CHINESE MEDICINE

Ultrasonic-microwave extraction process for total flavonoids in leaves of Ilex cornuta Lindl.ex Paxt.

The invention discloses an ultrasonic-microwave extraction process for total flavonoids in leaves of Ilex cornuta Lindl.ex Paxt., and relates to the technical field of an ultrasonic-microwave extraction process, aiming at solving the problem of an existing method on the content of total flavonoids in leaves of Ilex cornuta Lindl.ex Paxt. According to the extraction process, through a single-factor experiment, the influence of seven factors, namely temperature, ethanol concentration, solid-to-liquid ratio, microwave time, extraction number of times, ultrasonic time and grinding particle size, on an extraction rate is investigated, and four factors, namely the temperature, the ethanol concentration, the solid-to-liquid ratio and the microwave time, are determined in an orthogonal experiment; the extraction method is simple and convenient in process, high in product content and is suitable for extraction of total flavonoids in leaves of Ilex cornuta Lindl.ex Paxt.; and a detection method, involving quality standard, is scientific, advanced, rapid and strong in operability.
Owner:JINING MEDICAL UNIV

Ilicis cornutae folium formula granule, preparation method and detection method thereof

ActiveCN103800399AAdvanced generation technologyAdvanced detection methodComponent separationMaterial analysis by optical meansGramQuality standard
The invention discloses an ilicis cornutae folium formula granule, a preparation method and a detection method thereof. The formula granule is prepared in the following steps: preparing an ilicis cornutae folium dried powder by using ilicis cornutae folium as a raw material through water extraction, compression in reduced pressure, drying and other process flows, and performing dry-method granulation directly by ilicis cornutae folium dried powder or mixing with a proper amount of auxiliaries. A gram of ilicis cornutae folium formula granule is equivalent to 9g of a raw drug, and ilicis cornutae folium decoction pieces and ilicis cornutae folium formula granule are subjected to quality detection by adopting infrared fingerprint spectrum. The ilicis cornutae folium has a complete and advanced production process and a controllable detection standard with strong specific, the advanced process can be realized, and the quality standard relates to a scientific, advanced and quick detection method which is strong in operability.
Owner:广东省中医药工程技术研究院

Trachelospermum jasminoides (Lindl.) Lem. characteristic chromatogram, construction method and quality control method thereof, Trachelospermum jasminoides (Lindl.) Lem. formula granules and preparation method thereof

The invention belongs to the technical field of traditional Chinese medicine preparation, and particularly relates to a Trachelospermum jasminoides (Lindl.) Lem. characteristic chromatogram, a construction method and a quality control method thereof, Trachelospermum jasminoides (Lindl.) Lem. formula granules and a preparation method thereof. The method comprises the following steps: (1) preparing a Trachelospermum jasminoides (Lindl.) Lem. test solution; (2) adopting an ultra-high performance liquid chromatography method for detection under a specific gradient elution procedure. The obtained Trachelospermum jasminoides (Lindl.) Lem. characteristic chromatogram has high specificity and good reproducibility, the quality control of Trachelospermum jasminoides (Lindl.) Lem. can be conveniently realized, the construction method is short in time, and the separation degree and the peak shape of each characteristic peak in the obtained characteristic chromatogram are good; besides, the construction method can better extract the effective components such as nortracheloside, tracheloside and trachelogenin in Trachelospermum jasminoides (Lindl.) Lem., so that the quality of Trachelospermum jasminoides (Lindl.) Lem. is controlled, and the safety and effectiveness of Trachelospermum jasminoides (Lindl.) Lem. are ensured.
Owner:BEIJING KANGRENTANG PHARMA

Performance detection system for diaphragm compressor

The diaphragm compressor performance detection system comprises an air inlet pipeline connected to an exhaust port of a diaphragm compressor and an air outlet pipeline connected to an air inlet of the diaphragm compressor, the air inlet pipeline is provided with a first valve, and the air outlet pipeline is provided with a third valve. A detection pipeline is communicated between the air inlet pipeline and the air outlet pipeline, a pressure reduction assembly is arranged on the detection pipeline to adjust the pressure in the detection pipeline, and a flow indicating device and a pressure indicating device are further arranged on the detection pipeline to detect the pressure and the flow of the detection pipeline. Through the flow indicating device and the pressure indicating device on the detection pipeline, whether the performance indexes of the diaphragm compressor under different air inlet pressures are consistent with the design or not is monitored through the flow and the pressure of the circulation pipeline, and the blank of performance detection and acceptance of the diaphragm compressor is filled. A quicker and more scientific detection means is provided for diaphragm compressor detection, and the equipment failure rate is reduced.
Owner:HUANENG CLEAN ENERGY RES INST +2

Method for identifying liquorice component in traditional Chinese medicine composition

PendingCN113237990AFor the purpose of preliminary purificationGood removal effectComponent separationDiethyl etherN-Butyl Alcohol
The invention discloses a method for identifying a liquorice component in a traditional Chinese medicine composition, and belongs to the technical field of traditional Chinese medicines and natural medicines. The method comprises the following diversified extraction and purification steps of removing impurities by using diethyl ether, extracting by using methanol or ethanol, purifying by using a neutral alumina column, extracting by using water-saturated n-butyl alcohol, and purifying by using n-butyl pure-saturated water, and is characterized in that a dichloromethane-acetone-methanol-water expansion system is selected, and exclusive characteristic spots are taken as a judgment basis; the quality defect that a single extraction component is added arbitrarily by an enterprise with poor credit is overcome; and the method is not only suitable for quality control of the licorice-containing traditional Chinese medicine composition in industrial production, but also can be used as a non-standard inspection standard, and provides a powerful quality control monitoring means for medicine market supervision.
Owner:CHANGCHUN RENMIN PHARMA GROUP

Detection method for vaginal expansion plug

The invention relates to a detection method for a vaginal expansion plug. The detection method comprises an expansion value determination method and a weight difference determination method. The detection method is more scientific and has high reproducibility. On the other hand, the invention also provides the vaginal expansion plug which is suitable for detection of the detection method. The expansion plug comprises an expandable expansion carrier containing a medicinal substrate; the expansion carrier is divided into a front end and a tail end; the front end and the tail end have different expansion values and expansion speeds, so that liquid medicine can be prevented from flowing out, and the concentration of the medicine in the vagina is kept.
Owner:哈尔滨田美药业股份有限公司

Method for nondestructively detecting draw resistance of cigarette sections of cigarette

The invention relates to a method for nondestructively detecting the draw resistance of the cigarette sections of a cigarette. According to the method, on the basis of a plurality of states between measured parameters, total pressure drop, the gas flow of a filter vent hole and the position of the filter vent hole of the cigarette under three states are measured. With the method adopted, the influence of cigarette paper is eliminated in a calculation process on the premise that a draw resistance relation between the cigarette paper and cut tobacco sections cannot be determined. On the basis ofa cigarette draw resistance measurement method, the measurement of the draw resistance of each part of the cigarette is realized, calculation errors caused by the uncertainty of a relation between the cigarette paper and the cut tobacco sections is reduced, and meanwhile, the coating treatment of the cigarette is also reduced (from three times to two times). The detection method and measurement data are more scientific, reasonable, accurate and more practical. Practical engineering requirements for providing basic support for cigarette product quality tracing, product design and process optimization are satisfied.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Methods for preparing and detecting a compound dyers woad leaf suppository

The invention belongs to the technical field of medicine, in particular to methods for preparing and detecting a compound dyers woad leaf suppository. The suppository is prepared from the following raw materials in parts by weight: 460-500 g of a Chinese medicinal extract prepared from dyers woad leaves, honeysuckle flower, notopterygium root, rhubarb and bistort rhizome in a ratio of 4:2:1:1:1, and containing chlorogenic acid not less than 8 mg / g and emodin chrysophanol not less than 0.9 mg / g, 900-1000 g of fatty acid glyceride matrix, 40-60 mL of span 80 and 80-120 ml of volatile oil. TLC isused to identify indirubin, chlorogenic acid, rhubarb and Notopterygium root, and HPLC is used to determine emodin and chrysophanol in Compound Isatis Suppository. The preparation method is simple and feasible, and meets the needs of industrial production; The detection method is scientific, specific, simple, sensitive and stable, which improves the effective control of drug quality and guarantees the quality.
Owner:RONGCHANG PHARM ZIBO CO LTD
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