633 results about "Laboratory test" patented technology

The invention discloses a charged test method for a current transformer and application thereof. The method comprises the following steps of: serially connecting a charged analyzer with a secondary low-voltage loop to serve as a test loop through two switches of a secondary terminal box on a secondary side loop of the current transformer under the condition of operating the charged current transformer; injecting a different-frequency test signal generated by the analyzer into the test loop through the analyzer, and realizing a charged error test and a charged frequency response test by measuring and calculating loop key parameters under an injected frequency signal; and changing a method for secondary load impedance to change excitation conditions through the analyzer, and measuring load change influence to test a charged exciting characteristic curve. Compared with the prior art, the method has the advantages that: the charged test of the current transformer can be performed without contact of primary voltage, an upward current source, a standard transformer or a load box, the safety and reliability of an uninterrupted power test are guaranteed, the equipment is high in integration, portable and light, and the method is favorable for on-site and laboratory tests and long-term online monitoring.

The invention relates to a general-purpose composite Chinese herbal medicine immune enhancer for freshwater cultured fish, which is made of raw materials with the following weight ratios, based on the amount added per ton of feed: rhubarb 800-2000g; Sanqi 350-1000g; water Silybum 1200-2500g; Cassia 600-800g; Astragalus 600-2000g; Scutellaria baicalensis 500-900g; 500-1500g; Garlic 1000-2000g. After many tests in the laboratory, it has been proved that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater aquaculture fish can improve the survival rate of a variety of freshwater aquaculture fish in the process of attacking viruses; The long-term breeding experiment of farmed fish feed proves that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater farmed fish can effectively reduce the incidence of a variety of high-density farmed freshwater fish and improve the survival of the breed; the additive is safe, efficient, and has no side effects for long-term use. The breeding objects have strong vitality, rapid growth, bright body color, high feed conversion rate, and good breeding benefits.

A cell incubation system and methods for using a cell incubation system are described. The incubator system comprises an incubation compartment for receiving a microplate for processing samples. The microplate comprises a plurality of wells, each of the plurality of wells including a collection chamber, and a plurality of fluidic structures coupled to the plurality of wells. The microplate further comprises a plurality of sensors coupled to the plurality of wells.

The invention discloses a laboratory-sheet identification method based on image processing. According to the method, a set of algorithms which can accurately divide each area of a laboratory sheet and carry out effective cleaning are designed through investigation and analysis on a laboratory-sheet structure, how to process a laboratory-sheet photograph, which is shot by a mobile phone, step by step to finally obtain a clear image is standardized and subdivided, and a mature open-source OCR engine is used for identification; in each stage of a laboratory-sheet image processing process, the method makes thorough consideration, optimizes the performance, and improves the efficiency of image processing; and after identification, a laboratory-sheet item lexicon established by utilizing a laboratory test item information database by the method realizes automatic selection for identification engine modes and intelligent error correction for an identification result, and improves the accuracy of the laboratory-sheet identification result.

The invention discloses a beneficiation process of a molybdenum-tungsten oxide ore. The process of which is that: the liberation degree of ore crushing is higher than or equal to 70%; the flotation of molybdenum sulfide is preferred; the floatation tailing is classified and then a separation of slime and sand is carried out, wherein a slime and sand system takes alkali as the conditioning agent, sodium silicate as the depressant, and emulsified fatty acid as the collecting agent. The rough concentrate obtained from the separation of slime and sand is concentrated after being blended to obtain molybdenum-tungsten oxide ore collective concentrate. The collective concentrate is grounded again and added with the depressant, then a secondary concentrate can be gained through the concentration; the secondary concentrate is concentrated by means of Peter Roph method to obtain scheelite ore and oxidized molybdenum-tungsten beneficiation concentrate. The invention has the advantages that: 1. the invention discloses a beneficiation process flow for treating molybdenum-tungsten oxide ore; 2. the invention solves the difficulty of lowe technical specification of molybdenum - tungsten oxide ore beneficiation; 3. the invention completes laboratory tests and researches and fulfills industrialized implementation for the first time in China.

A process and laser system for in vitro and in vivo pain research, pain clinical testing and pain management. In preferred embodiments of the present invention a diode laser operating at a 980 nm wavelength is used to produce warmth, tickling, itching, touch, burning, hot pain or pin-prick pain. The device and methods can be used for stimulation of a single nerve fiber, groups of nerve fibers, nerve fibers of single type only as well as more the one type of nerve fibers simultaneously. The present invention is especially useful for research of human/animal sensitivity, pain management, drug investigation and testing, and psychophysiology/electrophysiology studies. The device and methods permit non-contact, reproducible and controlled tests that avoid risk of skin damage. Applicant an his fellow workers have shown that tests with human subjects with the process and laser of the present invention correlate perfectly with laboratory tests with nerve fibers of rats. The device and the methods can be applied in a wide variety of situations involving the study and treatment of pain. Preferred embodiments of the present invention provide laser systems and techniques that permit mapping and single mode activation of C fibers and A-delta fibers.

The invention provides a radio frequency circuit and a terminal. The radio frequency circuit comprises an intelligent processing module connected to a transceiver for receiving emission signals sent by the transceiver, processing the received emission signals to obtain first detection signals and feeding the first detection signals back to the transceiver; the transceiver used for emitting the emission signals and detecting power values of the received first detection signals; and a processor connected to the transceiver for determining whether an emission pathway for transmitting the emission signals in the radio frequency circuit are abnormal according to the power values of the first detection signals, detected by the transceiver. According to the technical scheme, under the condition that a laboratory test environment is not additionally created, fault detection of the radio frequency circuit is realized, the fault analysis time is shortened, and the investment cost is decreased.

A flash suppressor of the open prong type having a twist in its structure formed of alternating grooves and flutes or prongs provides a highly effective flash suppression for small and medium caliber weapons and especially for automatic weapons and machine guns when placed on the end of their barrels. The orientation of the direction of the twist of the structure is in a direction opposite to the direction of the rifling in its firearm barrel. Various objective laboratory tests and subjective user evaluation on its performance prove out its effectiveness in terms of mitigating visible flash on shorten machine gun barrels as well as standard full length barrels used in critical helicopter black out operations using night vision equipment. In addition, precise aiming of a weapon equipped with the inventive flash suppressor exhibits lower dispersion of actual projectile impact compared to conventional flash suppressors.

The invention provides a testing device for competitive adsorption of supercritical CO2 and CH4 in shale and a testing method of the device. The device comprises an injection pump system, a long core holder, a back-pressure valve, a differential pressure gauge, a temperature control system, a liquid fraction collector, a gas meter and a gas chromatograph instrument. The testing method comprises an evaluation method of CH4 single component gas in a shale core and an evaluation method of CH4 gas, converted by the supercritical CO2, in the shale core. According to the device and method, the detection conditions of a laboratory test that the supercritical CO2 displaces CH4 adsorbed in the shale under the high temperature and high pressure conditions of a stratum are met through a multifunctional long core displacement method, and then the purpose of evaluating the efficiency that the supercritical CO2 displaces the adsorbed CH4 is achieved; by using the combined long core, the gas injection volume is large, the errors are decreased, and the formation condition is truly restored; the cracked long core can simulate the competitive adsorption process of the fractured supercritical CO2 and the CH4 under the true shale reservoir condition; the injected CO2 is in the supercritical state, and an experiment is performed in a step-by-step depressurizing mode, and the depletion exploitation process of a stratum can be truly simulated.

A method for predicting the residual life of a corroded casing of a high-temperature and high-pressure well mainly comprises the following steps: (1) predicting the inner average corrosion rate and the outer average corrosion rate of the casing by adopting the gray neural network algorithm; (2) establishing an finite element model for the corroded casing, and simulating the corrosion process of the casing by utilizing the element birth-death technology, so as to acquire the critical failure wall thickness of the casing when the casing loses efficacy; (3) establishing a residual life prediction model for the corroded casing, and computing the residual life of the casing subjected to uniform corrosion, local corrosion and pitting corrosion by utilizing the approximate analytical method; (4) establishing a relation equation for zero dimension residual intensity and zero dimension internal pressure and steam temperature by utilizing the regression analysis method. Aiming at the limitation of the theoretical study, laboratory test and field data on prediction of the service life of the casing, the method can effectively predict the residual life of the casing in shorter time, and the established residual intensity relation equation enables the engineering personnel to perform comprehensive evaluation on the service capability of the casing.

The invention discloses a borehole stability evaluation method for a highly-deviated well. The borehole stability evaluation method includes steps of adopting interval transit time and density logging information to obtain formation pressure Pp, and determining the magnitude and direction of ground stress and formation rock strength parameters; converting the obtained ground stress into borehole stress of deviated well coordinates; determining the criterion of borehole instability judgment of the highly-deviated well; establishing a variation rule between borehole instability and deviation and azimuth angles thereof, and formulating borehole stability countermeasures of the highly-deviated well. In the borehole stability evaluation method, a set of complete and assorted mechanical evaluation methods combined with geology, well drilling, logging, core, laboratory tests and mechanics analysis methods takes shape, mechanical mechanism of borehole stability of the highly-deviated well can be evaluated, so that reliable basis is provided for determination of platform displacement optimization, borehole track optimization and a safe drilling fluid density window determination of the highly-deviated well.

Improved systems and methods are provided for monitoring compliance with an order for a patient specimen. Broadly, an inventive system incorporates a machine readable wireless identification and sensor technology to provide feedback to a caregiver regarding compliance with a specimen order. In particular, a system for monitoring compliance with an order for a specimen is provided which includes a specimen container having an attached machine readable wireless tag. The tag contains specimen container characteristic information. The tagged container aids in indicating to a user whether the correct specimen container type has been chosen. Further, a system is provided which includes a sensor useful in indicating whether a sufficient quantity of specimen has been obtained in order to perform the requested laboratory test as part of the patient's care.

The invention provides a triaxial compression rheological test system capable of simulating an engineering geological environment, belonging to rock material compression experimental facilities. The remarkable characteristics of the invention are as follows: a test chamber in the triaxial compression rheological test system capable of simulating the engineering geological environment can depend on a normal rheological compression test device to realize the analogue simulation of the variations of a temperature field, a humidity field and a chemical field in the engineering geological environment by utilizing a humidifier, a heater and a fluid tank. The device fundamentally solves the problems of larger deviation of rock mechanics parameters obtained by a laboratory test and a field in-situ test and analogue simulation of a geotechnical wall-rock multi-field coupling environment. The test system has compact structure and low cost, is rather easy to install and dismount test pieces, detectors, pipelines and lead wires, and has stronger adaptability on the test pieces with different lithologies and sizes, thereby providing a set of complete technology and means for the study on the mechanical behavior of the wall-rock stability under a complex engineering geological condition.

The invention discloses a device and method for synchronously testing stretching, compression and bend-stretching rebound moduli of a pavement material. The method comprises the steps of affixing resistance strain pieces to the upper and lower surfaces in a test piece span, testing the compression strain and stretching strain of a test piece, testing the deflection in a girder span by virtue of a displacement sensor, and substituting the deflection into a formula, so as to obtain bend stretching, stretching and compression modulus test results of the material. By virtue of the method, three moduli of the material can be simultaneously tested through a single test, so that the accuracy and testing efficiency of the modulus test of the pavement material are improved, the laboratory test cost is lowered, and accurate design parameters are provided for the scientific design, considering the difference between the stretching and compression moduli, of durable pavements.

A water-based drilling fluid (WBM) comprises as additive a reaction product of a polyhydroxyalkane and alkylene oxide. The polyhydroxyalkane is desirably based on a monosacchoride, and is preferably sorbitol. The alkylene oxide may comprise ethylene oxide (EO), propylene oxide (PO) and/or butylene oxide (BO). Good results have been obtained with additives including Sorbitol+18EO, Sorbitol+9PO, Sorbitol+4EO+6BO, Sorbitol+6EO+6BO, or Sorbitol+6BO. Drilling fluids in accordance with the invention have been found in laboratory tests to exhibit improved shale inhibition properties as compared with known polyol containing WBM, particularly in the absence of added potassium ions. This is environmentally advantageous.

A system and method to model and analyze the mixing energies of high-yielding non-Newtonian fluids to prevent chemical lost circulation is disclosed. Laboratory tests are preformed under varying conditions from which data on the mixing energies needed to optimize the use of high-yielding non-Newtonian fluids to prevent lost circulation is obtained. This data is then applied to a non-linear mathematical modeling system that is capable of scaling the data to give a dimensionless value. This value can be combined with historic information to predict optimal flow rates and mixtures to prevent chemical lost circulation. This data may be verified by means of simulation, lab testing, or application to a full-size well.

The invention discloses a method for evaluating the corrosion status of steel-cored aluminum strand overhead conductors, which includes: (1) sodium chloride and sodium bisulfite+sodium chloride solution used to simulate corrosion conditions in coastal areas and industrial pollution areas (2) Laboratory accelerated corrosion test of unserviced ACSR overhead conductors; (3) Test of tensile strength and electrical conductivity of the inner and outer aluminum strands of corroded conductors to obtain the performance of overhead conductors under given conditions Changes with corrosion time; (4) Tensile strength and electrical conductivity tests of the inner and outer layers of aluminum strands of steel-reinforced aluminum stranded aerial conductors that have served in seaside and industrial polluted areas for different periods of time. Under certain conditions, the relationship between the performance and the corrosion time is simulated to simulate the relationship between the corrosion status and the service time of the actual service wire; Analyze the stranded overhead wires, evaluate the corrosion state and the remaining service life of the wires, and propose a treatment plan for the wires in service.

Methods for completing a well involve the use of computational models to design cement systems that are appropriate for the anticipated well conditions. Data from laboratory tests and/or numerical simulations may be employed in the models. The cement systems are designed to have a higher Young's modulus than the surrounding formation. In addition, the cement systems contain chemical-expansion agents that cause a microannulus to be deliberately formed at the cement/casing interface prior to the application of heat. The microannulus disappears during application of heat, pressure or both owing to casing expansion.

The invention discloses an oiled paper compound insulation electrical ageing test system which comprises an alternating current-direct current high voltage power supply, a high voltage capacitance-resistance divider, an oiled paper insulation sample tank, a partial discharge measuring instrument and an upper computer. The alternating current-direct current high voltage power supply is connected with the oiled paper insulation sample tank. The high voltage capacitance-resistance divider is connected with the oiled paper insulation sample tank. The partial discharge measuring instrument is connected with the oiled paper insulation sample tank, and collects partial discharge signals inside an oiled paper insulation sample. The upper computer is in two-way communication connection with the alternating current-direct current high voltage power supply and the partial discharge measuring instrument. According to the oiled paper compound insulation electrical ageing test system, alternating current-direct current compound voltage is adopted for oiled paper insulation, accurate and accelerated ageing is conducted on a solid insulation paper board, and an oiled paper insulation electrical ageing laboratory test is achieved.

Method for the microwave emulsion treatment of water-in-oil (W/O) emulsions, including a) determining, for an W/O emulsion the optimum conditions of the variables: water content, salt content, pH value of the aqueous phase, initial temperature, microwave application power, final temperature and drop size distribution to be adjusted in the industrial plant, as a function of the features of the tested crude oil such as viscosity, density, asphaltene content, total acidity, such conditions being those required for obtaining at least 90% separation efficiency of the emulsion in the presence of microwave radiation: b) utilizing such information for the initial adjustment of application conditions of the method to phase separation units in refineries and production units; c) perform on line tests of the variables of step a) of the process response in the streams effluent from separation units, being the response the water content and salt content tests, so as to feedback the information to the best adjustment of the process conditions for microwave application; and d) utilizing the on line or laboratory tests of the effect of the method as a tool for monitoring the efficiency of the breaking of the W/O emulsion.

The invention discloses a device for constantly loading pressure for testing the durability of reinforced concrete, comprising a touch screen, a controller, an electric hydraulic pump, an energy storage tank, a loading assembly, and a rapid freeze-thaw cycle instrument box, wherein, the loading assembly comprises fixed left and right baffle plates, a hydraulic jack is fixed on the inner side of one baffle plate, and a pressure sensor is fixed on the inner side of the other baffle plate, a plurality of slidable slide plates and specimen boxes comprising four-point bending backing plates and rubber boxes are parallelly arranged between the pressure sensor and the hydraulic jack, specimens are arranged in the specimen boxes; the touch screen is connected with a controller data line, the pressure sensor is connected with the controller data line, the controller is connected with an electric hydraulic pump data line, and the hydraulic jack is communicated with the electric hydraulic pump and the energy storage tank through a three-way pipe. According to the invention, real working conditions of the interaction of stress, chemical attack, dry-wet cycle or freeze-thaw cycle on a concretemember in a practical project can be simulated, thus the data obtained by laboratory tests has great value for engineering reference.

The invention relates to a soil dynamic characteristic test technique for geotechnical engineering and especially relates to a simple instrument and a method for test of an internal stress of a soil mass under cyclic loading. A large quantity of researches and reports record that the roadbed soil under the cyclic loading is suffered from dynamic stress accumulation, but the academics does not pay attention to the phenomenon. The simple instrument can be mainly used for measuring the response conditions of the internal stress in the soil on factors such as different cyclic loading magnitudes, loading waveforms, loading frequencies and soil compaction rate, and acquiring the parameters, such as settlement curve, dynamic elastic modulus, total deformation modulus, static elastic modulus, of the soil mass under the cyclic loading effect. The method provided by the invention belongs to an innovative technology which is simple in laboratory test and convenient in soil dynamic characteristic acquisition; with the help of a lever pressure meter, the instrument can realize 10-times load output and can save instrument consumable materials and power sources; a computer system can be utilized to realize the automatic control on the instrument control and the data collection.

A quantitative fecal examination apparatus includes a fecal collector removably mounted on a container base, having the fecal collector provided with a suction portion for sucking a fecal specimen into the collector and then the fecal specimen is disposed into the container base for examination test or for sucking the fecal specimen for further laboratory test including microscopic inspection, and having a quantitative design in the examination apparatus for collecting the fecal sample in a pre-set quantity for more precise examination.

The invention, which belongs to the technical field of computer numerical simulation of the compression response on a worked out section by an overlying rock after exploitation of the coal, particularly relates to a computer numerical simulation method with consideration of a worked out section of a caving zone. The method comprises: step one, carrying out modeling; step two, determining rock mechanics parameters except a worked out section; step three, assigning a worked out section material to a two-yield constitutive model; step four, determining relevant parameters of the worked out section material; and step five, substituting all rock mechanics and worked out section parameters into the model to carry out operation to obtain a numerical simulation result with consideration of a worked out section. According to the invention, the carving angle is considered into numerical simulation, so that the result is close to the practical situation. The worked out section is simulated by using the two-yield model, the parameters are determined based on iterative trial-and-error matching and Salamon stress-strain curve fitting, and the reliability of the simulation result is ensured basedon matching of laboratory test data and computer simulation data.

Computerized systems and methods are provided for coordinating clinical laboratory testing from initial order entry to results notification. A laboratory testing manager provides a centralized conduit for interfacing entities placing orders for laboratory testing and laboratories performing testing. Entities, such as healthcare providers, patients, and the like, may access the laboratory testing manager to enter orders for laboratory testing. The laboratory testing manager may determine an eligible laboratory to perform the laboratory testing based on information provided in each order, such as the type of testing requested and insurance coverage information. After a laboratory performs testing specified in an order, the laboratory may enter the testing results, which are routed to recipients indicated for the results.