204results about How to "Achieve quality control" patented technology

Disclosed herein is a method of estimating sediment content of a hydroprocessed hydrocarbon-containing feedstock. The method involves the steps of: (a) precipitating an amount of asphaltenes from a liquid sample of a first hydroprocessed hydrocarbon-containing feedstock having solvated asphaltenes therein with one or more first solvents in a column; (b) determining one or more solubility characteristics of the precipitated asphaltenes; (c) analyzing the one or more solubility characteristics of the precipitated asphaltenes; (d) determining asphaltene content of the liquid sample from the results of analyzing the one or more solubility characteristics of the precipitated asphaltenes; (e) determining one or more asphaltene stability parameters of the liquid sample from the results of analyzing the one or more solubility characteristics of the precipitated asphaltenes; and (f) correlating the asphaltene content and one of the asphaltene stability parameters of the liquid sample to estimate sediment content of the liquid sample.

The invention relates to vacuum casting method for epoxy resin. The vacuum casting method is characterized by comprising the following concrete steps of: drying silicon micro powder for 8 hours at the temperature of 100+ / -5 DEG C; preheating a vacuum casting tank to 70+ / -5 DEG C; preheating a mixing tank to 40+ / -5 DEG C; adding epoxy resin, epoxy curing agent, silicon micro powder, color paste, a toughening agent and an accelerant into the mixing tank; heating the vacuum casting tank to 70 DEG C and vacuumizing after one hour; casting epoxy resin mixture in the mixing tank into a transformer coil mould and keeping 3-5 hours when the vacuum degree reaches 5mbar. The invention has the advantages of effectively improving the strength of electrical insulation materials, reducing and eliminating the internal and surface defects and reducing the production costs.

The invention provides a device for measuring the damping ratio of a damper, belonging to the technical field of space application equipment. The device comprises a measuring support, an rzeppa synchronizing universal coupling, a magnetic fluid sealing device, a coupling, a torque sensor, a loading device, a sensor support, a base, a temperature controller and an angle coder, wherein both the loading device and the sensor support are fixedly connected with the base; the torque sensor is connected with the loading device and the magnetic fluid sealing device; the rzeppa synchronizing universal coupling is connected with the measuring support; and the measurement data measured by the torque sensor and the angle coder is accessed to a PC (personal computer) machine via a data wire to acquire the measurement data. The device of the invention is capable of measuring the damping ratio of a damper assembly at minus100 to 70 DEG C and working stably within the vacuum, high-temperature or low-temperature environment; the device has the advantages of high measurement accuracy and high load matching performance; and the torque sensor has low temperature drifting.

The invention relates to the field of the quality control on traditional Chinese medicine, specifically to a quality control method for erigeron breviscapus(Vant.) hand-mazz. The method comprises a fingerprint detection method and a multiple-indicative content detection method for erigeron breviscapus (Vant.) hand-mazz, wherein the fingerprint detection method employs UPLC detection method, through which 24 characteristic peaks are found and 8 characteristic peaks are ascribed. By using content detection method for erigeron breviscapus(Vant.) hand-mazz., the UPLC-PDA method, contents of following constituents are determined: erigeroside, chlorogenic acid, breviscpini glycoside, Scutellarin, 3,4-0-dicaffeoylquinic acid, 3,5-0-dicaffeoylquinic acid and 4,5-0-dicaffeoylquinic acid. Compared with the prior art, the fingerprint detection method and the multiple-indicative content detection method for erigeron breviscapus (Vant.) hand-mazz are improved in the invention, so that the quality of erigeron breviscapus (Vant.) hand-mazz. can be controlled in a convenient, rapid and accurate manner, thereby ensuring the quality of erigeron breviscapus (Vant.) hand-mazz. stable, uniform and controllable.

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.

The invention relates to an ultrasonic detection method for different technical stages of a composite blade ring. A pulse echo type water-leaching focused ultrasound C scan method is adopted for performing ultrasonic detection on the whole blade ring. The ultrasonic detection method comprises the following steps: firstly, respectively performing water-leaching focused ultrasound C scan detection on interior defects of a titanium alloy inner ring and outer ring forge piece to be used for making the whole blade ring; detecting a joint interface in an integrally formed blade ring after being subjected to cellosilk winding and inner and outer ring hot isostatic pressure, namely with a 5-10MHz water-leaching focused probe, respectively performing C scan imaging on an interface signal and a bottom wave signal; and detecting the bonding quality of a metal / metal interface between the inner and outer rings of titanium alloy and a metal / fiber interface between titanium alloy and silicon carbide cellosilk. The ultrasonic detection method can be adopted for comprehensively controlling the inner quality and interface bonding quality of the whole blade ring of silicon carbide fiber enhanced Ti-based composite and has the advantages of strong operability, high detection sensitivity and direct detection result.

The invention discloses a polypropylene melt index hybrid modeling method based on an integrated neural network. The method comprises steps: firstly, through acquiring key process variable data and melt index offline analysis data, preprocessing such as outlier detection and standardization is carried out on original data, and a training sample data set is built; then, a mechanism analysis method and a steepest descent method are adopted to build a polypropylene melt index simplified mechanism model, and a Bagging ensemble learning algorithm and an information entropy method are adopted to build a mechanism model prediction error compensation model based on an integrated BP neural network; and finally, the simplified mechanism model and the error compensation model are combined, the error compensation model is built for realizing online melt index estimation. Compared with current other modeling methods, the method of the invention has the advantages that the model generalization performance is improved; the polypropylene production process can be guided; and the polypropylene quality control can be effectively realized.

The invention discloses a polypropylene melt index hybrid modeling method based on a dynamic error compensation mechanism. The method comprises the following steps: firstly dividing an original sampledata set into a training sample set and a test sample set, establishing a mechanism model by adopting the training set, establishing a plurality of new training sample subsets by adopting a random resampling method, and training each subset to establish a base learner set of an Elman neural network; performing clustering analysis, and selecting individuals with good performance in each cluster asselective integration subsets; finally, using the parallel hybrid modeling method of the dynamic compensation mechanism for testing a sample set, judging whether a mechanism model training sample andcorresponding parameters need to be updated according to the similarity principle or not through errors, and obtaining a corresponding polypropylene melt index prediction value. The method is high inprediction precision and high in reliability, the nonlinear dynamic change trend of the melt index in the propylene polymerization production process can be well tracked according to the obtained soft measurement result, and the effective technical support is provided for operation optimization and quality control in the polypropylene production process.

The invention discloses a crucian herpesvirus disease JDORF25 vaccine as well as a preparation method and an application thereof. The crucian herpesvirus disease vaccine is recombinant protein truncated, optimized and translated by crucian herpesvirus type II immuno-related ORF25 gene, wherein the sequence is shown in SEQ ID NO.2; the gene segment is synthesized, transferred to a yeast expression vector and screened by highly copying and cloning to finally obtain a high-expression recombinant protein pichia pastoris Km71 / CyHV-2-25 Pichia pastoris Km71 / CyHV-2-25, CCTCC NO: M2014570. The protein fermented by the yeast has the characteristics of high activity and high yield. The passive immunity test defines that the antigen protein can effectively prevent crucian herpesvirus disease and can also be mixed with adjuvants for highly effectively preventing crucian herpesvirus disease.

The invention discloses a crucian herpes virus disease compound vaccine preparation, a preparation method and application. An applicant provides three strains of recombinant saccharomycetes, including pichia pastoris Km71 / CyHV-2-25, CCTCC NO:M2014570, pichia pastoris Km71 / CyHV-2-25C, CCTCC NO:M2014571 and pichia pastoris Km71 / CyHV-2-25D, CCTCC NO:M2014572. Proteins produced by utilizing the saccharomycetes through fermentation have the characteristics of high activity and yield; and immunity protective experiments prove that the crucian herpes virus disease compound vaccine preparation prepared by mixing the three proteins is capable of effectively preventing crucian herpes virus diseases.

The invention discloses a method for controlling the quality of Tai Chi Hand-Waving rehabilitation training. The method comprises the following steps of: step (1): establishing a Tai Chi Hand-Waving action standard model, and step (2): collecting the Tai Chi Hand-Waving actions of a rehabilitation trainee by the steps described in the invention. The invention is characterized in that the method further comprises the step (3): comparing the Tai Chi Hand-Waving actions of the rehabilitation trainee with the Tai Chi Hand-Waving action standard model. According to the invention, the complex Tai Chi Hand-Waving actions are converted into the simple basic actions of turning the upper body and waving both hands to draw circles, and the optical mark collection points and evaluation parameters forcomparison are accurately selected, so as to achieve quality control of Tai Chi Hand-Waving rehabilitation training.

The invention provides a method adopting fuzzy control to adjust a genetic algorithm so as to optimize parameters and application of the method. According to the method of the invention, a genetic algorithm (GA) for global optimization is selected to perform automatic optimization solving on adjustment of a subordinating degree function, parameter correction of a fuzzy control rule analytic expression and position change adjustment of an output clavate subordinating degree function. The method includes the steps that the genetic algorithm is utilized to perform self-correction and self-adjustment on a fuzzy subordinating degree function curve, parameters p and q in the fuzzy control analytic expression U=f (E,C,p,q) and the position of the output clavate subordinating degree function, and therefore, fuzzy control satisfying requirements of experiences can be realized, and control accuracy and stability can be greatly improved, and designed control quality can be realized, and better control quality of a furnace temperature control system can be realized, and the system can be constantly in an optimized state in an operating process assuredly.

The invention belongs to the field of pharmaceutical analysis and particularly relates to a method for detecting related substances in irbesartan hydrochlorothiazide tablets by adopting high performance liquid chromatography. The method comprises the steps that 1, chromatographic conditions are firstly determined through a chromatographic column, column temperature, detection wave length and a mobile phase; 2, a test sample solution and a reference substance solution are prepared; 3, a determination method is adopted to perform precision determination of the test sample solution and the reference substance solution respectively, the solutions are injected into a liquid chromatograph, a chromatogram is recorded, and calculation is performed according to a self-contrasting method and a correction factor self-contrasting method; a main peak of the test sample solution and a main peak of the reference substance solution are consistent in retention time, and accordingly the method is achieved.

The invention discloses a high-energy beam additive manufacturing forming device and method. The device comprises a magnetic field unit for assisting additive forming, and further comprises a formingbase for placing a to-be-processed material, and a high-energy beam generation device which emits a high-energy beam, acts on the to-be-processed material, and forms a molten pool. The magnetic fieldunit comprises a first magnetic field generating device, and the first magnetic field generating device comprises an induction coil arranged below the molten pool. The first magnetic field generatingdevice is detachably arranged below the surface, used for containing the to-be-processed material, of the forming base; a second magnetic field generating device is arranged above the forming base; the induction coil is arranged below the molten pool, and the molten pool is located in the area, where the clustered magnetic induction lines are emitted, of the induction coil, so that the clustered magnetic induction lines penetrate through the molten pool, therefore, the magnetic field intensity of the molten pool is concentrated, the control effect of the magnetic field on additive forming is improved, and the control efficiency of the magnetic field unit on the molten pool is improved.

The invention relates to a twisting device for electrical conductors. The twisting device has at least one twisting head that rotates about an axis of rotation and a clamping device. The twisting head is movable in the direction of its axis of rotation toward the clamping device and is mounted on a first, motorised length compensation carriage, while the clamping device is mounted on a travel compensation carriage that is movable towards the length compensation carriage parallel to the axis of rotation of the twisting head. After the conductors have been cut to size and transferred to the twisting head and the clamping device, they are placed under tension. Then, the twisting head is activated to rotate about an axis of rotation parallel to the conductors while simultaneously moving towards the clamping device. Simultaneously, the clamping device is subjected to a force directed away from the twisting head and the travel / force profile for the clamping device is evaluated.

The invention discloses giant salamander iridescent virus vaccine, a preparation method and an application. The giant salamander iridescent virus vaccine is recombinant protein translated after truncating and optimizing a major capsid protein gene of a giant salamander iridescent virus, and has a sequence as shown as SEQIDNO.2 (Sequence Identifier Number 2). A nucleotide sequence corresponding to the protein is optimized according to preference of a yeast codon to synthesize a gene segment which is transferred to a yeast expression vector, and pichiapastoris Km71 / GSIV-MCP (i) Pichiapastoris(1 / i)Km71 / GSIV-MCP (CCTCC (China Center for Type Culture Collection) NO: M2014573) of the high expression recombinant protein is finally obtained via high copy and clone screening. The protein produced by fermentating the yeast has the characteristics of high activity and large yield. An immunoprotection experiment determines that the antigen protein can effectively prevent a giant salamander iridescent virus disease.

The invention discloses a quality control method for salvianolic acid injection, which uses the medicinal effect result of an observed sample as an index, and specifically uses the influence of the observed sample on the aggregation function of platelets in a tested animal as an index. The method of the invention conveniently and effectively realizes quality control on the salvianolic acid injection, integrally characterizes the quality of the salvianolic acid injection, is simple and feasible, and has accurate and reliable results.

A soft sensing method for a melt index of polypropylene based on a selective integrated limit learning machine includes: firstly, an original sample data set is divided into training sample set and evaluation sample set, multiple subsets of training samples are established by random resampling method, and each subset is trained to establish the limit learning machine submodel, then the performanceof each submodel is evaluated by using the evaluation sample set, and the submodel for integration is screened, and finally, the predicted value of polypropylene melt index of each submodel is obtained by calculating the weight coefficient of each submodel. The invention has the characteristics of high prediction accuracy and high generalization ability. According to the soft sensing result obtained by the invention, the melt index change trend of the polypropylene production process can be well tracked, and effective technical support is provided for operation optimization and quality control of the polypropylene production process.

The invention relates to a transmission shaft vibration test system, which includes a test bench, a vibration isolation base, a drive motor, an input speed sensor, a vibration acceleration sensor, an intermediate support, a shaft tube radial displacement sensor, an output speed sensor, and a dynamometer and the controller, wherein the vibration isolation base and the dynamometer are fixedly arranged on the test bench, and are separately arranged on both sides of the test bench, a bracket is fixed between the vibration isolation base and the dynamometer, and a drive is fixed on the upper part of the vibration isolation base. The motor, the speed sensor at the input end is set at one end of the drive motor, the speed sensor at the input end, the vibration acceleration sensor, the radial displacement sensor of the shaft tube, and the speed sensor at the output end are all connected to the controller respectively. The transmission shaft vibration testing system of the present invention can effectively discriminate abnormal sound transmission shafts and non-abnormal sound transmission shafts, so as to realize quality control on the NVH aspect of the transmission shafts.

The invention relates to an HPLC fingerprint detection method of a kidney-tonifying and bone-strengthening traditional Chinese medicine. The kidney-tonifying and bone-strengthening traditional Chinesemedicine is prepared from prepared rehmannia roots, dogwood, rhizoma cibotii, herba epimedii, Chinese yams, angelica sinensis, moutan bark, oysters and other traditional Chinese medicinal materials.The detection method comprises the following steps: extracting a sample, and detecting the sample by using a high performance liquid chromatograph, wherein the high performance liquid chromatograph comprises an ultraviolet detector, the set detection wavelength of the ultraviolet detector is 220-250nm, the stationary phase of the high performance liquid chromatograph is a C18 chromatographic column, the mobile phase A is acetonitrile, the mobile phase B is an aqueous solution containing 0.05-0.3% of potassium dihydrogen phosphate and 0.01-0.1% of sodium octanesulfonate, and gradient elution isadopted. Nine common peaks are marked in the established fingerprint spectrum, the sixth peak is the icariin peak, methodological investigation shows that the nine common peaks have very high stability, repeatability and precision, and the method can be completely used for guiding production and controlling product quality.

The invention provides a method for preparing a material special for polybutylene terephthalate (PBT) optical fiber loose tubes. The method comprises the following steps of: uniformly mixing a solid additive required by the production of the PBT optical fiber loose tubes and 1,4-butanediol, conveying and metering by using a gear pump, adding into a slurry preparation tank in a proportion, allowing the obtained slurry and slurry which is prepared from 1,4-butanediol and terephthalic acid to enter an esterification reaction kettle, and thus obtaining a PBT base material for optical fiber loose tubes by a direct esterification and continuous condensation production technology; and ensuring that the PBT base material continuously enters a solid-phase system through metering, preheating and crystallizing, entering a solid-phase reactor for tackification at the temperature of 170 to 210 DEG C for 15 to 20 hours, cooling a product obtained after tackification, dedusting, conveying, and packaging to obtain the material special for the PBT optical fiber loose tubes. By the method, a color value of the product can be effectively controlled, the special additive is uniformly mixed in the product, the PBT product for the optical fiber loose tubes has relatively stable quality, and the high-speed development tendency of the machining process of the loose tubes is met.

The invention discloses a method for monitoring tea production in real time by adopting a near infrared spectrum. The method is characterized by comprising the following steps: (1) preparing a tea sample, namely collecting a tea sample with representativeness; (2) acquiring the near infrared spectrum, namely acquiring a diffuse reflection spectrum chart of the tea sample based on Workflow setting SOP (Standard Operation Process) and analysis method; (3) preprocessing the diffuse reflection spectrum chart, namely performing first-order or second-order derivative+Norris noise filtering processing on the spectrum chart; (4) establishing a model, namely establishing a mathematical model between data measured by the near infrared spectrum chart and the standard method by using special chemometrics software; (5) verifying the model, namely measuring a novel tea sample on a near infrared instrument according to a method which is identical to the step (2), predicting by using the model established in the step (4), and comparing the measured tea sample with the result measured according to a national standard method; and (6) performing field detection, namely performing near infrared spectrum scanning on a sample in the production field, measuring by using the model established in the step (4), and adjusting the field production conditions according to the measurement result.

The invention discloses a low carbon-carbon aluminum-containing silicon steel standard sample, which comprises the following chemical elements by weight: 0.0022%-0.0735% of C, 0.300%-4.195% of Si, 0.105%-1.605% of Mn, 0.0072%-0.111% of P, 0.0018%-0.0214% of S, 0.0031%-0.131% of Ni, 0.0142%-0.400% of Cr, 0.0037%-0.252% of Cu, 0.0006%-0.0019% of V, 0.0019%-0.0545% of Ti, 0.0253%-0.535% of Alt, 0.0001%-0.0014% of Bt, 0.0009%-0.0014% of As, 0.0002%-0.0035% of Sb, 0.0001%-0.0002% of Sn, 0.0012%-0.0301% of Nb, 0.0016%-0.0004% of N, and the balance iron element and unavoidable impurities.

A quality control method for medicinal fatheadtree wood, its intermediate and its injection features that the information about their chemical components are expressed by graphical method, so comparing them with each other and analyzing them easily and correctly.

The invention belongs to the field of analytic chemistry and relates to a low-concentration retapamulin determination method and an application, in particular to a method for determining low-concentration retapamulin with high-performance liquid chromatography-tandem mass spectrometry as well as an application. According to the method, the high-performance liquid chromatography-tandem mass spectrometry is adopted for determination, the mass spectrum adopts a multi-reaction monitoring mode, further, an internal standard method is adopted, and tiamulin is taken as an internal standard substance. The determination method has the advantages of high specificity, sensitivity and accuracy and good repeatability, the limit of detection can be up to 200 pg / ml, the limit of quantitation can be up to 500 pg / ml, and the determination method can be widely applied to concentration tests of low-concentration retapamulin biological samples, especially sample concentration testing of retapamulin ointment transdermal tests, and has great significance for retapamulin quality control.

The invention discloses a pepper numb-taste component content detection based on a method of quantitative analysis of multi-components by a single marker. The pepper numb-taste component content detection based on the method of quantitative analysis of multi-components by the single marker comprises the steps: (1) establishing a hydroxy-beta-sanshol standard curve; (2) detecting the content of hydroxy-beta-sanshol in a sample to be detected; and (3) using a relative correction factor to calculate the contents of hydroxy-alpha-sanshol and hydroxy-gamma-sanshol in the sample to be detected. According to the pepper numb-taste component content detection based on the method of quantitative analysis of multi-components by the single marker, the method of quantitative analysis of multi-components by the single marker and an external standard method are mutually confirmed and have no obvious difference; and the results of the method of quantitative analysis of multi-components by the single marker and the external standard method are both reliable. The pepper numb-taste component content detection based on the method of quantitative analysis of multi-components by the single marker, disclosed by the invention, has the advantages that the contents of the hydroxy-alpha-sanshol and the hydroxy-gamma-sanshol are calculated by using the relative correction factor and determination of chromatographic peak in case of lacking comparison products of the hydroxy-alpha-sanshol and the hydroxy-gamma-sanshol, the quality controls of main numb-taste components of the hydroxy-alpha-sanshol and the hydroxy-gamma-sanshol in pepper are realized, and a new method is provided for pepper quality control.

The invention provides a method of improving corrosion resistance of an oil tube. The method comprises the following steps: (1) pre-cleaning; (2) card mounting; (3) pre-heating; (4) nitrogen-carbon-yttrium ion penetrating; (5) ion activating; (6) oxygen ion penetrating; (7) post-cleaning; (8) ion stabilizing, and (9) oil immersing. The method disclosed by the invention can carry out controllable ion penetrating (PIP) treatment on the oil tube to form multiple compound penetrating layers on the surface of the oil tube, so that good mechanical performance is achieved and service life of the oil tube is prolonged while the corrosion resistance is improved, and therefore, the method has good practical application effect.

The invention discloses an inverter resistance welding parameter error prediction quality control method. A dsPIC33 digital signal controller is adopted as an operation processor, a welding parameter prediction algorithm is operated on the processor, and a welding control algorithm is simultaneously operated; the output current of secondary side rectifying is collected through a current sensor, the electrode displacement amount is detected through a displacement sensor, and the electrode voltage is detected through a voltage sensor; the parameters obtained through the sensors are compared with preset expected values, a parameter error prediction value sequence is built, a simplified prediction model containing the three parameters is built, a welding parameter error prediction value of the next sampling moment is calculated through recursion through a least squares support vector machine prediction method, then the error prediction value is sent to the controller before the control amount is sent out, the controller is regulated in advance according to the error prediction value to control output, and then quality control is achieved.

A 'Zhengqi' tablet fingerprint detection method is provided. The method includes 1) preparation of a solution of a sample to be tested, 2) preparation of a contrast solution and 3) measurement. The invention further provides application of the 'Zhengqi' tablet fingerprint in 'Zhengqi' tablet component quality detection and a quality detection method thereof. The invention further provides a fingerprint screening method for a plurality of medicine materials in the 'Zhengqi' tablets. Through the 'Zhengqi' tablet fingerprint detection method and application, a high-performance liquid chromatogramfingerprint of the 'Zhengqi' tablets is established, chromatographic peaks of medicine materials in the 'Zhengqi' tablets are assigned and confirmed, effective monitoring can be performed from the source of each raw material, raw material quality is strictly controlled, and relatively stable contents of effective components in the components of the 'Zhengqi' tablets are ensured, thus ensuring safety and effectiveness of clinical medication.

The invention provides a fingerprint spectrum detection method of a medicinal preparation. According to the detection method, an HPLC-DAD wavelength switching method is adopted to simultaneously determine a plurality of effective components such as mulberroside A, hydroxysafflor yellow A, paeoniflorin, ferulic acid, calycosin-7-glucoside, rosmarinic acid, salvianolic acid B, formononetin and the like in the medicinal preparation; the sensitivity and the accuracy of the detection method are greatly enhanced, so that the comprehensiveness of quality evaluation of the medicinal preparation is guaranteed.