37results about How to "The method is simple and reliable" patented technology

The invention discloses a vacuum brazing technology method between copper and stainless steel dissimilar metal water connector, comprising processing each part of the water connectior, controling the processing precision and component assembly clearance; washing the part of water connectior; assembling water connections and putting in special fixture. Put the fixture in vacuum brazing furnace and carry out braze welding according to the following brazing technology: 1) take 35 minutes to make the furnace temperature to rise to 650 DEG C at a uniform speed; 2) continue to preserve heat for 20 minutes; 3) rise the furnace temperature at a uniform speed to 890 DEG C in 20minutes; 4) continue to preserve the heat for 20 minutes; 5) then rise the furnace temperature to 970 DEG C+-10 DEG C at a uniform speed in 15 minutes; 6) Continue to preserve heat for 5 minutes; 7) then stop heating and cool naturally; 8) on the next day take out the water connector from the fixture; 9) carry out the acceptance test by using the ultrasonic automatic testing device. The technical problem that the annular gap of the water connector is not fully filled and can be corroded is solved; the invention has the advantages of reliable method and high production efficiency, and can effectively improve the qualified rate of the products.

Aiming at the deficiency of the prior art, the invention provides an advanced and effective separation method and a detection technology, in particular to a combined detection method by utilizing liquid chromatogram-diode array-evaporative light scattering detector. One-time sample introduction is adopted, and simultaneously various brightener in bright nickel plating solution is detected. The accurate and effective detection for the content of the various brightener is realized, the quality control of the bright nickel plating is realized in the real sense, the method is reliable and rapid, and the operation is simple.

The invention provides an on-line water quality monitoring method based on computer vision monitoring of vital signs of fins. A non-contact computer vision observation method is used for monitoring in real time the vital signs of medaka fish which is sensitive to change of water quality and serves a model organism, and the vital signs comprise a respiratory rate and a respiratory amplitude value which serve as physiological features, and the pectoral fin swinging frequency, the tail fin swinging frequency and the swinging amplitude value which serve as motion features. The monitoring of the water quality is realized according to the vital signs of the medaka fish. The method is reliable and easy to realize, has the advantages of instantaneity, reliability and the like, and can supply certain support and reference to development of biological type water quality monitoring and prewarning.

The invention discloses a heart rate variability analysis based lie detection method and lie detection device. The heart rate variability analysis based lie detection method comprises collecting heartbeat signals of a tester in real time during the integral testing process; obtaining a time series of heartbeat (RR) intervals according to the heartbeat signals; dividing the RR interval time series into a plurality of sub-series according to the time interval of a conversion before a test, the mentality purification and a formal test; comparing character information of the sub-series and judging whether the tester lies or not with time domains and frequency domain analysis for calculating the HRV (Heart Rate Variability) of the sub-series serving as the character information. The heart rate variability analysis based lie detection method is reliable, strong in practical operability and high in lie detection accuracy.

The invention relates to a malicious code detection method and system based on a kernel object behavior body, and belongs to the technical field of a computer. The method comprises the following steps of building a malicious family public behavior body; building a suspicious sample individual behavior body; importing the suspicious sample individual behavior body into the malicious family public behavior body to form a malicious code field body; reasoning the individual behavior body; and judging whether the individual behavior body is malicious code or not. The method and the system have the advantages that the method is simple and reliable; a suspicious sample can be detected and classified through building the body; the relationship between two objects and the operation condition of the two objects can be directly seen from a kernel object behavior graph; and the detection and classification effect on the malicious code is good.

A real-time temperature measuring and ablation integrated semi-rigid water cooling microwave ablation antenna comprises a radiation head, a medium tube, a semi-rigid coaxial cable, a 'water heat exchange cavity' composed of an outer guide sleeve and a water cavity sleeve and a water channel cooling system which is composed of inlet and outlet capillary water tubes and arranged in an antenna body. The antenna is characterized by further comprising a temperature measuring unit provided with a T-shaped thermocouple. A temperature measuring end of the temperature measuring unit protrudes from the top end of the radiation end and can be in zero clearance contact with microwave acted tissue. The method is reliable, the structure is stable, the linearity is good, and the sensitivity is high. By the aid of the reliable and effective temperature measuring mode, the key technology that the temperature is measured in real time while the semi-rigid water cooling microwave ablation antenna performs microwave hyperthermia or microwave ablation in cavities, intestines or blood vessels and even hearts is achieved, and accordingly, powerful guarantee is provided for obtaining of the optimum curative effect and the application expansion, and favorable conditions are provided for the intelligence of semi-rigid microwave hyperthermia or microwave ablation.

The invention discloses a northern area power grid icing numerical forecast correction method considering solar radiation. The method comprises the following steps that ground and high-altitude real-time meteorological data and forecast meteorological data of the day are acquired from the day's weather forecast of a local meteorological station of northern areas, wherein the real-time meteorological data and the forecast meteorological data include temperature data; local power transmission line real-time icing data and numerical mode forecast icing data of the northern areas are collected; inversion of daily solar radiation intensity in the period of real-time icing and forecast icing is performed by using the temperature data; a coordinate system is established with the daily solar radiation intensity acting as the abscissa and the highest temperature acting as the ordinate, and the position of a calculating day in the coordinate system is determined; and the numerical mode icing forecast result is corrected. According to the method, the existing power grid icing model can be corrected so as to further meet the icing process of the northern areas and enhance the accuracy of power grid icing prediction; and the method has the advantages of being simple and reliable, high in operability and high in forecast accuracy.

The invention relates to a separation method of oil-water emulsion. The separation method comprises the following steps: carrying out freezing polymerization reaction to uniformly mix polyethylene glycol diacrylate, polydivinylbenzene particles and an initiator in a solvent; after introducing nitrogen gas to remove oxygen, transferring into an injector and sealing; controlling the reaction temperature to be -18 DEG C and reacting for 48 hours; after sufficiently washing an obtained product through an eluting solvent, carrying out oil-water emulsion separation on the product only under the action of gravity, wherein the oil-water separation efficiency can reach 99.8 percent, the oil content in water is less than 50ppm and the adsorption capacity of a polymer material on the oil-water emulsion is higher than 2.8g/g. The preparation method provided by the invention is simple and reliable and post-treatment is simple; an obtained material is used for separating the oil-water emulsion and has the advantages of rapid separation speed, high separation efficiency, good repeated utilization rate and great adsorption capacity.

The invention relates to a liquid-solid combined culture kit for isolation and culture, identification, ration and drug sensitive tests of antiureal and mycoplasma hominis and an application method. The kit comprises drug sensitive laths and quantitative test laths, a liquid medium and a solid medium; the liquid medium and the solid medium are both weakly acidic, with a PH value about 6.0. Compared with the prior art, the liquid-solid combined culture kit for isolation and culture, identification, ration and drug sensitive tests of antiureal and mycoplasma hominis has the advantages of easy operation, reliable method, stable quality, easy observation and judgment of results and other advantages; meanwhile, the liquid-solid combined culture kit has good specificity and sensitivity, the liquid-solid combined kit can reduce the false positive rate by 5% to 10% or so, and the false negative rate by 2% to 5% or so; the liquid-solid combined culture kit basically eliminates the problem of the test result disturbances from the mixed fungi pollution, and has an important practical application value and a good market prospect.

The invention relates to a detection method for measuring sugar content in environmental water sample by a spectrophotometer, and the method comprises the following steps: sucking 1mL of filtered water sample into a tube, adding phenol solution (of the concentration of 5 percent) and concentrated sulfuric acid, stirring and placing for 10 minutes, measuring a light absorption value at 490nm position after the color is displayed fully, and measuring the sugar content in the water sample according to the curve of the concentration and the light absorption value. The method for detecting the sugar content in water is rapid and effective, and the relative average deviation is less than 5.0 percent. Therefore, the method for detecting the sugar content in the environment water sample is more reliable and is easy to implement, which can meet the requirements of research and production.

The present invention discloses a preparation method of three- dimensional MoS2, including: reaction raw material solution preparation, (NH4) 2MoS4 / foam nickel preparation, MoS2 / foam nickel preparation, PMMA -coated MoS2 / foam nickel preparation, PMMA -coated three-dimensional MoS2 preparation and three-dimensional MoS2 preparation. The MoS2 produced by heat reduction method is constructed into a three-dimensional structure by template method, three-dimensional foam nickel morphology is reproduced, and the method is simple and reliable, well repeatable in process, and strongly operable. The three-dimensional MoS2 produced by the method copies the three-dimensional foam nickel morphology, has a larger surface area, has a certain mechanical strength, and can be used as a catalyst for dehydrogenation sulphuration and catalytic hydrogenation and the like.

This invention discloses a method and a device for treating power net harmonics characterizing in utilizing a harmonic signal transmitter to separate sum of harmonic three-phase voltage or current signals to set that a harmonic transmitter secondary circuit formed by the controllable impedance at the secondary side of the transmitter costs harmonic energy, or inverses harmonic signals at the secondary side of the transmitter then feeds back the inverse signal to the system via the harmonic transmitter first side to cancel the harmonic volume of the system.

The invention provides a deep mining surrounding rock ground pressure disaster occurrence precursor body measurement index characteristic recognition method. The method comprises the following steps:obtaining local fracture deformation of a rock body before a compression peak value through a mining surrounding rock body stress-strain relationship; the sub-instability stage of the rock mass is carried out after the peak value; surrounding rock body measurement optical information is utilized to reflect change characteristics before and after a peak value; meanwhile, body measurement charge andacoustic emission information characteristics are matched to serve as pre-peak long-term monitoring forecast and post-peak proximity monitoring early warning, a pre-peak and post-peak disaster information body measurement index characteristic recognition method and system are established, pre-peak and post-peak precursor body measurement index characteristics are accurately obtained, and effective recognition and prediction of deep mining surrounding rock disaster occurrence precursors are achieved. The method is reliable, simple to operate and high in system stability.

The invention provides a capacitive screen short circuit testing method, a capacitive screen and a mobile terminal. The method comprises the following steps: selecting a first to-be-detected touch electrode and a second to-be-detected touch electrode; setting a first input/output interface connected with the first to-be-detected touch control electrode in a touch control IC to be the output mode;setting a second input/output interface connected with the second to-be-detected touch control electrode in the touch control IC to be the input mode; setting the rest input/output interfaces in the touch control IC to be the high-resistance-state mode or the low-level output mode; outputting a level signal through the first input/output interface, and detecting whether a feedback signal is received by the second input/output interface or not; if the feedback signal is received, comparing the feedback signal with the level signal; if the feedback signal is consistent with the level signal, determining that a short circuit occurs between the first to-be-detected touch electrode and the second to-be-detected touch electrode. The method is simple and reliable. Through simple signal processing, the detection of the short circuit condition of the touch control electrode in the capacitive screen can be realized.

The invention provides a fluorescent molecular marker of a rice grain width regulatory gene GW8 and primers thereof. The primers include an Allele-AT primer, an Allele-GC primer and a Common-R1 primer. The Allele-AT primer has the sequence as shown in SEQ ID NO:1, the Allele-GC primer has the sequence as shown in SEQ ID NO:2, and the Common-R1 primer has the sequence as shown in SEQ ID NO: 3. By adopting of the technical scheme of the invention, whether the rice variety contains a GW8 allele with deletion of two bases can be rapidly detected; the method is simple, and the shortcomings of low efficiency and use of toxic substances in the used method at present are solved; the fluorescent molecular marker can be applied to molecular marker-assisted selection of the GW8 allele and improves grain-shape agronomic traits of rice.

The invention discloses a separation finger jumping correction and detection method for an automobile diaphragm spring clutch, which is characterized by comprising the following steps of: firstly, controlling the connection height of a separation finger of the diaphragm spring clutch in the range of (L-1) plus and minus 1 by the product and tolerance design; and then carrying out correction and detection, wherein in the correcting and detecting process, a jack screw is driven by a servo motor, the separation finger of the diaphragm spring clutch is jacked upward to be deformed, the connection height of the separation finger reaches the specified size range by the deformation, the separation finger is ensured to jump in the specified tolerance range and L represents a separation finger connection height standard value. According to the invention, the requirement on the jumping of the separation finger of the diaphragm spring clutch can be met and reliable data of each separation finger connection height is provided.

The invention discloses a two-level VSC current converter inter-pole short-circuit switch characteristic fault positioning method, and belongs to the technical field of the flexible DC grid control and protection. The method comprises the following steps: analyzing an AC feed physical process of a two-level VSC current converter under a DC side inter-pole short-circuit working condition in detail,and dividing the physical process into three stages according to a switch-on condition of an internal bridge arm in the current converter; estimating the approximate time interval, of firstly accomplishing the commutation from the occurrence of the fault, of the current converter by deriving the change rate limitation of the AC feed current at each stage; and on this basis, dividing a DC line into different fault sections according to the association of the internal bridge arm switch condition and the fault position electric distance. The own feed commutation physical process is clearly clarified after the current converter inter-pole fault occurs, the different fault sections can be approximately corresponded by only utilizing the current converter switch information, thereby providing anew path for the future development of the protection and fault positioning principle of the flexible DC grid.

The invention discloses an equal thickness interference method based centering error measuring device which comprises a laser device, a convergent mirror, a star tester, a spectroscope, a reference mirror, a receiving screen, a CCD (charge coupled device) detector, a computing group, a focusing group, a turning reflector, a measured lens, a connecting fixture and a precision rotating shaft. The convergent mirror, the star tester and the spectroscope are sequentially disposed on an optical axis of the laser device, the star tester is positioned on a focus of the convergent mirror, the reference mirror, the receiving screen and the CCD detector are sequentially disposed in an optical axis direction of a reference beam, the focusing group and the turning reflector are sequentially disposed on an optical axis of a measurement beam, the measured lens, the connecting fixture and the precision rotating shaft are sequentially disposed on an optical axis of the measurement beam turned by the turning reflector, and the measured lens is fixed on the precision rotating shaft through the connecting fixture. By the aid of the equal thickness interference principle, centering errors of the measured lens can be measured, and the equal thickness interference method based centering error measuring device can achieve whole-group measurement of a multi-lens group and is higher in precision than that of conventional visual microscopic measurement.

The invention discloses a method for preventing a fixed bed biomass gasifier from bridging. The lower portion of the biomass gasifier is provided with a gas inlet. A part of a gas inlet pipe penetrates through a high temperature section of the gasifier. A gas outlet is formed in a drying section of the gasifier. During operation, an oxidizing agent is led into the gas inlet and heated in the high temperature section of the gasifier and then flows out of the gas outlet. Biomass nearby the gas outlet starts pyrolysis/gasification under the action of the high-temperature oxidizing agent to damage a generated bridge arch or a bridge arch about to be generated, and meanwhile the gasification load of the gasifier can be increased. A non-mechanical method is adopted to prevent the biomass gasifier from bridging, no moving parts are used, and the method is stable and reliable. Moreover, by slightly reforming an existing fixed bed gasifier, the provided technology can be applied to an existing gasification device.

The invention relates to the technical field of aircraft quality characteristic measurement, and discloses an aircraft quality characteristic simple measuring device and an aircraft quality characteristic simple measuring method. The aircraft quality characteristic simple measuring device comprises a horizontally-arranged measuring platform, wherein two supporting mechanisms are installed on the measuring platform; and each supporting mechanism comprises a base and two hydraulic telescopic rods vertically fixed to the base, a cross beam is horizontally installed at the top parts of the two hydraulic telescopic rods, the outer wall of the cross beam is sleeved with a plurality of sleeves, universal joints are fixed to the bottom parts of the outer walls of the sleeves, and lifting ropes arearranged on the universal joints. According to the aircraft quality characteristic simple measuring device and the aircraft quality characteristic simple measuring method, an aircraft is hung above the measuring platforms, and the position of the centroid relative to the hanging point can be calculated by using a balance equation of the moment of the hanging point, so that the position of the centroid of the aircraft is determined; and the moment of inertia of the aircraft is measured by adopting a double cycloid method, the operation is simple, and the method is reliable and can be widely applied to aircraft quality characteristic measurement.

The invention discloses a cement pavement internal crack monitoring system and crack width and position determining methods. The system comprises a plurality of cement-based piezoelectric intelligentaggregates, signal generators, charge amplifiers and oscilloscopes; the cement-based piezoelectric intelligent aggregates are embedded in the bottom of a cement surface layer; every two adjacent cement-based piezoelectric intelligent aggregates are electrically connected with a signal generator and a charge amplifier, respectively; the oscilloscopes are connected with the charge amplifiers, and every two adjacent cement-based piezoelectric intelligent aggregates can transmit signal waves therebetween. The crack width in a pavement is determined by utilizing the change of the amplitude of signals output before and after pavement loading, and the specific position of the crack is determined based on the system. The method can reduce the pavement monitoring cost, is reliable, simple, convenient and rapid, and is suitable for large-scale popularization and application; and the accuracy of obtained crack sizes and positions is high.

The invention belongs to the technical field of medicines, and relates to a preparation method of nanoparticles with a targeting or photo-thermal function based on a tannic acid modification technology and application of the nanoparticles in tumor targeting and photo-thermal therapy. Firstly, paclitaxel nanocrystals (PNC) are prepared. The tannic acid can quickly form a poly-tannic acid molecular layer (pTA) on the surface of the nanocrystal under the action of ferric iron, and the paclitaxel nanocrystal (PNC-pTA) with a photo-thermal therapy effect is obtained. The paclitaxel nanocrystal PNC-pTA-cRGD with a tumor targeting effect can be obtained by further stably modifying a targeting ligand with an amino group or a sulfydryl group, such as cRGD, on the surface of the nanoparticle by utilizing pTA. The pTA-based nanoparticle surface modification method provided by the invention is simple and reliable, the obtained product is stable in performance, the raw materials are safe, and the pTA-based nanoparticle surface modification method is an innovation in the aspects of photothermal and chemotherapy combined therapy and drug tumor targeted delivery, and has huge economic and social benefits.

The invention discloses a method for improving the flatness of initial spraying concrete of a tunnel, and relates to the technical field of tunnel construction, and the method for improving the flatness of the initial spraying concrete of the tunnel comprises the following steps: S1, vertically inserting more than three anchor rod devices with adjustable lengths into bed rock of the tunnel; s2, a reflective leveling line is arranged in a pulling mode, and the reflective leveling line is supported at the top ends of all the anchor rod devices; the lengths of all the anchor rod devices are adjusted according to the thickness and flatness of a primary support spraying layer required by tunnel design; and S3, spraying the primary support spraying layer, and enabling the top surface of the primary support spraying layer to be flush with the reflective leveling line. According to the method for improving the flatness of the tunnel initially-sprayed concrete, it can be guaranteed that the flatness of the initial support meets the requirement in the initial support concrete spraying process.

The invention discloses a synthetic method of fatty acid containing nitrogen heterocycle. The synthetic method comprises the following steps: (S1) adding a heterocyclic compound with substitution of chloromethyl groups, a catalyst and a solvent DMF into a reaction kettle; (S2) introducing carbon dioxide to lead the pressure in the kettle to be 2-4MPa, adjusting and reacting for 10-16 hours at thetemperature of 40-50 DEG C; (S3) adding diluted hydrochloric acid into the reaction kettle to carry out acidification, using ethyl acetate for extraction, combining organic phases, carrying out rotaryevaporation to remove liquid, and further carrying out vacuum drying, thus obtaining the fatty acid containing nitrogen heterocycle. The synthetic method disclosed by the invention has the beneficialeffects that a one-pot method is adopted, the raw materials are easy to obtain, price is low, aftertreatment of products is also simpler, the universality for a substrate is also very high, and the promotion and application are easy.

A method performed by a network node operating as a master node (MN) in dual connectivity with a secondary node (SN) for measurement gap configuration, comprises receiving a notification from the secondary node that it will perform a secondary node modification procedure; determining that a measurement gap configuration or reconfiguration is required; and sending a response message to the secondary node in response to said notification, wherein the message includes a gap configuration information.

The invention discloses a direct shear test device using a triaxial compression tester for loading and a direct shear test method. The direct shear test device comprises a shear ring, a test sample, a limiting ring, a shear platform and a heat-shrink tube. The direct shear test method involving the direct shear test device includes the steps of test sample processing, device assembly, load application and strength computation. After the test sample processing is completed during test, the test sample is disposed between the shear ring and the limiting ring, the shear platform is mounted, the device wrapped by the heat-shrink tube is placed on a triaxial compression tester, ambient pressure is applied to set normal stress, and vertical load is applied until the test sample is destroyed. Under the action of the vertical load of the triaxial compression tester, the shear platform moves up and down along the limiting ring to shear the test sample. Direct shear tests can be conducted on the common triaxial compression tester by the direct shear test device and the direct shear test method. The direct shear test device has the advantages of simplicity, convenience in operation, accurate testing results and capability of saving test costs substantially.

The invention discloses a method for determining the stability of a profile control and flooding microsphere aqueous solution, which comprises the following steps: adding profile control and flooding microspheres into a target water sample, uniformly stirring to prepare a target solution with the concentration of the profile control and flooding microspheres in the target solution being 0.1-1%, determining the turbidity of the target solution, and recording the turbidity as N0; adding the target solution into a centrifugal tube for centrifugation wherein, the centrifugation rotating speed is 2000-8000 rpm, the centrifugation time is 1-5 min, and the centrifugation temperature is 60-70 DEG C; after centrifugation is finished, absorbing middle-layer liquid, measuring turbidity, and recording as N1; and calculating the stability index, wherein S = N1/N0, and the larger the value of S is, the higher the stability is. According to the method, the stability of different profile control and flooding microspheres in a water sample with the mineralization degree of 20000 mg/L can be accurately obtained; standards are provided for stability determination of different profile control and flooding microspheres, and the problems that stability evaluation results of existing profile control and flooding microspheres observed by naked eyes are large in difference, and the method is low in reliability are solved.

The invention provides a multi-split air conditioner system fault diagnosis and energy-saving potential recognition method. The method comprises the following steps that S1, a multi-split air conditioner fault diagnosis and energy-saving potential recognition model is built based on association rules; s2, collecting operation data of the actually used multi-split air conditioner; and S3, the collected data are processed, fault pre-diagnosis and energy-saving potential analysis are conducted through the model established in the step S1, multi-split soft fault recognition can be achieved through the multi-split actual operation data, the influence of the soft fault on system performance is estimated, and the method is reliable. The multi-split air conditioner can execute the fault diagnosis and energy-saving potential recognition method for the multi-split air conditioner, the multi-split air conditioner with the soft fault can be recognized through actual operation data, the influence of the soft fault on the system performance can be estimated, and the method is reliable.

The invention discloses a tunnel boring machine hob abrasion type judgment and abrasion loss monitoring system and method. The method comprises the steps that the rotating frequency and frequency distribution of a hob in tunneling unit time or unit distance of a tunnel boring machine are obtained; according to the influence of different abrasion types of the hobbing cutter on the rotating interval time of the hobbing cutter, qualitative judgment of the abrasion types of the hobbing cutter is completed through the abrasion frequency distribution characteristics of the hobbing cutter; and the average abrasion loss is quantitatively calculated by using the rotation frequency of the hob. According to the method, hob abrasion type judgment and abrasion average value calculation can be completed at the same time, and the method is simple, reliable and suitable for monitoring all hob abrasion types of the tunnel boring machine; meanwhile, the device is easy to operate, low in price and high in applicability, and has important significance in on-site hob abrasion monitoring and cost control.

The invention discloses an inertial measurement unit calibration method based on a Stewart platform. The inertial measurement unit composed of a three-axial acceleration sensor and a three-axial angle sensor is fastened to the center position of a moving plane of the Stewart platform; the Stewart platform is controlled to generate linear vibration with different frequencies and amplitudes in the X direction, the Y direction and the Z direction, and excitation acceleration is provided for the triaxial acceleration sensor; the Stewart platform is controlled to generate angular vibrations with different frequencies and amplitudes around the X direction, the Y direction and the Z direction respectively, and excitation angles are provided for the triaxial angle sensor. Acquiring an output signal of the inertial measurement unit by using data acquisition equipment, and processing the signal; inertial measurement unit calibration based on the Stewart platform is realized by combining an excitation signal measured by a machine vision method and an output signal processing result acquired by data acquisition equipment. Compared with the existing method, the method can complete calibration without repeatedly installing the inertial measurement unit, and has the advantages of flexibility, simplicity, high efficiency and the like.