73 results about "Normal concentration" patented technology

The invention relates to a method for quickly detecting the intensity of four basic tastes (sour, sweet, bitter, and salty) in a liquid food by using an electronic tongue. The method comprises the following steps: preparing an HCl solution with a concentration of 0.01mol/L from distilled water as the activating solution of the electronic tongue (five tastes) sensor; using distilled water of the cleaning solution (pay attention to replacing new distilled water); adding the HCl solution with a concentration of 0.01mol/L as the calibration solution, so that the electronic tongue sensor can be used for analyzing samples after calibration; selecting four kinds of substances with four basic tastes with a concentration suitable for the normal concentration level in the human mouth as the basic samples; determining the number of cleaning beakers according to the number of the samples, wherein each sample is cleaned in the specific cleaning beaker, and the samples are cleaned according to the natural sequence; placing the electronic tongue sensor in each beaker for 120 seconds to detect the taste of the sample, and detecting for six times for each sample to obtain that the taste of the sample has a semi-logarithmic relationship with the response strength on the electronic tongue sensor; and carrying out macro operation by electronic tongue software on the results to obtain the relative intensity relationship between different concentrations of the basic taste substances on the electronic tongue.

Disclosed is an improved method for determining the concentration of a first analyte in a fluid test sample as a function of a second analyte also present in the sample whose concentration in the fluid sample is clinically related to that of the first analyte. The method involves determining the concentration of the first analyte, and, if this concentration is outside of its useful analytical range, dividing this concentration by the normal concentration of the second analyte. This method of ratioing the concentrations of the first and second analyte is advantageous because accuracy is increased with fewer false positive and false negative results being reported.

The invention discloses a varied concentration mixed working medium auto-cascade refrigerator, comprising four parts of a normal concentration loop, a first varied concentration loop, a second varied concentration loop and a third varied concentration loop; the normal concentration loop is provided with a compressor, a condenser, a rectifying device, a regenerator, a first throttling element, an evaporator, a second throttling element and a gas-liquid separator which are connected in turn, wherein the first varied concentration loop is provided with a third disconnecting valve 13, a liquid storage tank 9 and a fourth disconnecting valve 14 which are connected in turn; the second varied concentration loop is provided with a first disconnecting valve 11, a gas holder 7 and a second disconnecting valve 12 which are connected in turn; and the third varied concentration loop is provided with a fifth disconnecting valve 15, a gas holder 8 and a sixth disconnecting valve which are connected in turn. The invention dramatically improves the dynamic operation characteristics of the refrigerator at the stage to start lowering temperature, and can realize lower refrigerating temperature and improving thermal dynamic efficiency of the refrigerator. The invention is particularly applicable to the occasions not only needing rapid temperature reduction, but also needing lower refrigerating temperature, thus having favorable application prospect.

The invention discloses a vehicle system for detecting oxygen, carbon monoxide and carbon dioxide. The system comprises an oxygen sensor, a carbon monoxide sensor, a carbon dioxide sensor, a signal amplification circuit module, a filtering circuit module, a controller module, a warning module and a display module, wherein weak signals detected by the oxygen sensor, the carbon monoxide sensor and the carbon dioxide sensor are input into the controller module after being amplified by the signal amplification circuit module and filtered by the filtering circuit module; and the controller module is synchronously connected with the warning module and the display module. The system can detect the concentrations of oxygen, carbon monoxide and carbon dioxide in a vehicle in real time; and once the concentrations in the vehicle are not in a normal concentration range, an alarm is immediately given to prompt persons in the vehicle so as to effectively prevent the generation of death with asphyxia in the closed vehicle.

The invention relates to a safe and environment-friendly method for removing explosive oil gas of a large-scale emptying oil tank. The method comprises the following steps of: (1) carrying out an inert gas replacement treatment on the large-scale emptying oil tank or other large-scale limited spaces which are full of the oil gas and are located within the explosive limit, so as to lower the oxygen concentration of the large-scale emptying oil tank or the other large-scale limited spaces to 10-13%; (2) enabling the inert oil gas to pass through a heat exchanger and a preheater and then to enter a catalytic reactor, introducing high-temperature gas with the oil gas concentration which is lower than 0.1% into a wall-dividing type heat exchanger after the catalytic combustion is carried out so as to transfer heat quantity to new-entered inert gas, and then continuously carrying out replacement through circularly entering the oil gas into the oil tank or the other large-scale limited spaces; and (3) directly carrying out an air replacement emission treatment until the whole oxygen concentration recovers to an air normal concentration range when the oxygen concentration is lower than 0.5%. The method has the advantages of safety, high efficiency and environment protection, and the efficiency of hypoxia catalytic combustion processing under an inerting condition reaches 99%.

The present invention refers to a new compound containing Silymarin with Carbopol for the treatment of Diabetes Mellitus. This compound morphologically and structurally regenerates the damage that occurs in the pancreatic tissue in Diabetes Mellitus, and regenerates the insulin-producing pancreatic cells (β cells). It therefore regulates the serum levels of this hormone. Furthermore, it restores and maintains the normal concentrations of the blood glucose.

The invention belongs to the technical field of nuclear magnetic resonance, and particularly discloses a magnetic relaxation switch for detecting glycoprotein. A probe of the magnetic relaxation switch adopts a super-paramagnetic nano particle which uses a ferroferric oxide particle as a core, uses glucan as a shell and has average particle size of no more than 60 nanometers. A method for detecting the glycoprotein by using the magnetic relaxation switch comprises two mixing steps and one detecting step, wherein the mixing steps comprises mixing of agglutinin and mixing of target substance, the agglutinin is concanavalin, and the target substance is a1-acid glycoprotein. The linear concentration range of the detection is 0 to 7.0nmol/L, and the detection limit is 0.40nmol/L and is far lower than the normal concentration of AGP in blood plasma.

The invention relates to a method for measuring the communicating porosity of concrete by using a non-contact impedance method and a testing device. The method for measuring the communicating porosity of concrete comprises the following steps: measuring the resistivity of a salt solution in normal concentration, preprocessing a piece to be tested, installing a concrete test piece to be tested and an ion migration system, measuring the resistivity of the concrete test piece and calculating the communicating porosity of concrete according to an Archie equation. The testing device comprises the ion migration system, a resistivity measuring system and a data processing system, wherein the ion migration system mainly comprises a flange pressure plate, a liquid adding pipe, a liquid supplementing water channel, the piece to be tested and an opposite-pull screw; the resistivity measuring system comprises a signal generator, a coil, a magnetic core and a current sensor; and the data processing system comprises a signal processor and a central controller. The method for measuring the communicating porosity of concrete and the testing device have the beneficial effects that the limit to the size of the test piece in the traditional testing method is broken through, so as to realize the testing for the communicating porosity of concrete; the method for measuring the communicating porosity of concrete and the testing device can not only be suitable for testing the communicating porosity of concrete freshly mixed indoors, but also be suitable for testing the communicating porosity of concrete obtained through core boring sampling in the existing building structure.

The invention discloses a control method for SCR efficiency recovery. The control method for the SCR efficiency recovery comprises the following steps that A, if the SCR efficiency is low due to low urea concentration, the normal concentration of urea is replaced; B, if the SCR efficiency is low due to the large deviation of a urea injection control model, the deviation of the urea injection control model is corrected; C, if the SCR efficiency is low due to SCR crystallization, SCR de-crystallization regeneration is started; D, if the SCR efficiency is low due to SCR sulfur poisoning, SCR desulfurization regeneration is started; and E, if the SCR efficiency is low due to a deactivated SCR catalyst, SCR is replaced. According to the control method, the SCR efficiency can be restored, and the control method is high in reliability.

The invention discloses a non-azeotropic mixed working medium heat pump air-conditioning system with the concentration adjustable in a variable condenser and a variable evaporator. The non-azeotropic mixed working medium heat pump air-conditioning system comprises a normal concentration circuit, a variable condenser concentration bypass and a variable evaporator concentration bypass. The normal concentration circuit comprises a compressor, the condenser, a supercooler, a throttling device, a main gas-liquid separator and an evaporator. The variable condenser concentration bypass comprises an auxiliary gas-liquid separator and regulating valves. The variable evaporator concentration bypass comprises the main gas-liquid separator, the supercooler and regulating valves. According to the non-azeotropic mixed working medium heat pump air-conditioning system with the concentration adjustable in the variable condenser and the variable evaporator, the energy efficiency of the heat pump air-conditioning system can be further improved on a given working condition; the concentration of a mixed working medium in the condenser is firstly changed, then the concentration of a mixed working medium in the evaporator is changed, good temperature matching can be generated in the condenser and the evaporator on variable working conditions, and the relatively high energy efficiency of the heat pump air-conditioning system can be guaranteed; and the structure is simple, operation is convenient, modification cost is low, and the concentration of the mixed working medium in the condenser and the concentration of the mixed working medium in the evaporator can be independently regulated by controlling the opening-closing and the opening degree of the additionally arranged regulating valves.

A method for non-destructively testing for the concentration of a component of a film that is used for doping a region of a semiconductor wafer uses an image histogram of the light reflected from an array of points on the film and the underlying substrate. The image histogram has peaks that are characteristic of the composition of the film. Tests are run to establish the image histogram peaks for a film with a normal concentration of the components and for films with low and high concentrations. When the same test is made for the film of a production wafer, the concentration of the component is readily classified as normal, high, or low.

The invention discloses a manihot esculenta crantz rapid propagation method based on atomization nutrient solutions. The manihot esculenta crantz rapid propagation method comprises the steps that 1, one ends of 20-30 cm manihot esculenta crantz seed stems are place into cultivating pots at first, the other ends of the manihot esculenta crantz seed stems extend out of planting holes of a box body cover plate, 2-3 bud eyes are reserved outside the other ends of the manihot esculenta crantz seed stems, the planting holes are sealed, the nutrient solutions with the 1/2 concentration are added into the cultivating pots, and atomization cultivating is conducted for 30-35 days through an atomization device; 2, after the root systems of the manihot esculenta crantz seed stems touch the cultivating pots, lifting brackets are removed, the cultivating pots are directly placed on bearing platforms, the manihot esculenta crantz seed stems above the box body cover plate are fixed through a fixing device, and cultivating is continued with nutrient solutions with the normal concentration; and 3, after cultivating is conducted for 85-90 days, the manihot esculenta crantz seed stems located above the box body cover plate are cut into several segments, the step 1 to the step 3 are continuously repeated or cultivating is continued for 15-20 days, then the manihot esculenta crantz seed stems are transplanted to the field to be planted, and the temperature in a cultivating box body is controlled to be 20 DEG C-28 DEG C. The manihot esculenta crantz rapid propagation method based on the atomization nutrient solutions has the advantages that propagation can be conducted at any time, and the propagation rate and the survival rate are high.

The invention relates to a rapid and accurate detection method for an ammonium nitrate explosive and belongs to the technical field of analytical chemistry. The method comprises the following six steps of preparing an ionic liquid stock solution, preparing standard NH4<+> and NO3<-> stock solutions, preparing an ionic liquid capillary electrophoresis buffer solution, preprocessing a capillary tube, measuring a normal concentration curve and analyzing exploding remnants. The detection method has the beneficial effects that a novel green solvent, namely ionic liquid, simultaneously serves as the electrophoresis buffer solution and an indirect ultraviolet detection back-ground electrolyte, so that the disadvantages that multiple reagents need to be used, the operation is complex, and the environment is polluted in a conventional method are overcome; furthermore, main ingredients, namely NH4<+> and NO3<-> ions of the exploding remnants of the ammonium nitrate explosive can be simultaneously separated and detected by virtue of the method, and the method is specific to the detection of the ammonium nitrate explosive; meanwhile, by combining an efficient capillary electrophoresis-ultraviolet detection technique, the analysis is accurate and rapid, the detection sensitivity is high, the reproducibility is good, the dosage of the reagent is low, and the method is easy to popularize and apply.

The invention discloses a method for automatic detection of concentration of heavy metal ions in soil and soil remediation. The method comprises the following steps: presetting a normal heavy metal ion concentration threshold value parameter; using an electrochemical transducer to acquire voltage signals generated by ion electrodes, and further obtaining membrane potential; according to the actual value of the membrane potential, obtaining the ion concentration, meanwhile displaying the ion concentration by a display unit, comparing the calculated ion concentration with the set normal heavy metal concentration threshold value, if the calculated ion concentration is higher than the normal concentration threshold value, giving an alarm by a control and alarm unit, and meanwhile starting an electric soil remediation device. The method disclosed by the invention can measure, display and store the ion concentration; the method charges current to the soil to enable the metal ions in the soil to be conveyed to the electrodes, and then intensively collects and processes the conveyed metal ions, so as to achieve the pollution control purpose.

The invention provides a transmitting method of ozone with a normal concentration. According to the transmitting method, an ozone calibration instrument, an ozone analysis meter and a dynamic calibration instrument are used, wherein the ozone calibration instrument, the ozone analysis meter and the dynamic calibration instrument are calibrated by a SRP state ozone normal calibration instrument. The method comprises the steps of 1, confirming that the ozone calibration instrument has been calibrated by the SRP state ozone normal calibration instrument and is in force; 2, transmitting ozone with the normal concentration to the ozone analysis meter through the ozone normal calibration instrument; 3, using the transmitted ozone analysis meter to carry out a reverse calibration on the dynamic calibration instrument; 4, conducting reexamination after the reverse calibration, wherein the reexamination is usually conducted on the second day after the calibration and the reexamination usually needs to be conducted twice, introducing ozone to the ozone analysis meter through the dynamic calibration instrument, and continuously observing for 1-2 hours under the same ozone concentration, wherein a product of which concentration fluctuation is within an allowable range is the good product; 5, comparing the ozone concentrations of the ozone calibration instrument and the dynamic calibration instrument when the ozone calibration instrument and the dynamic calibration instrument are connected to the ozone analysis meter respectively under the same concentration, wherein if a concentration discrepancy is within 0.5% of a transmitting value, transmitting is proved to be ok. According to the transmitting method of ozone with the normal concentration, the transmitting is convenient and the error is small.

The invention relates to a detection method of the vitamin B12 content in a vitamin complex additive, which belongs to the fields of food additives and detection methods of the food additives. The detection method comprises the following steps: (1) preparing a vitamin B12 stock solution with the concentration of 1 mg/ml, then preparing serial solutions with the normal concentrations of 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0mu g/ml, putting on an instrument to measure under certain chromatographic conditions, and calculating a regression equation and correlation coefficients; and (2) weighing a test sample, putting on the instrument to measure under the same chromatographic conditions, and calculating the concentration of the test sample according to the peak height of a standard sample, the concentration of the standard sample and the peak height of the test sample. According to the detection method, the measuring precision and accuracy can meet the requirement of dairy product analysis, and the detection method has the characteristics of high accuracy, high repeatability, simplicity and convenience in operation, low detection limit and the like and can be used as a conventional detection method to be applied.

The invention relates to a production increase type plant growth regulator and the preparation method, which is characterized in that: an acetamide and a potassium hydroxide are chosen for being made into acetamide solution and potassium hydroxide solution respectively according to the proportion by weight, and the two solutions are mixed together, and then some water is added for being regulated in a normal concentration; wherein the potassium hydroxide can be replaced by plant ash in 1.5 to 5 times, firstly the plant ash solution can be made, and then the preparation can be implemented. The invention can be used in seed soaking, the leaf spraying and the root application, so the crop yield can be increased significantly.

The invention provides a fluorescent probe for detecting high-concentration gamma-Glutamyl Transpeptidase, which solves the problem of selective response to abnormally high-concentration gamma-Glutamyl Transpeptidase in vivo. The fluorescent probe of the invention starts to produce obvious fluorescence changes after the gamma-Glutamyl Transpeptidase is higher than the normal concentration of humanbody, and as the concentration of gamma-Glutamyl Transpeptidase increases, the fluorescent probe solution of the invention produces large fluorescence enhancement and obvious color change. At the same time, after the fluorescent probe of the invention reacts with gamma-Glutamyl Transpeptidase, the permeability of the cell membrane is greatly enhanced, and when applied to cell imaging, the fluorescent probe can selectively image ovarian cancer cells with high expression of gamma-Glutamyl Transpeptidase. According to the invention, the synthesis process is simple and feasible, the raw materialsare cheap and easy to obtain, the preparation cost is low, and the preparation method is easy to popularize.

The invention relates to a method for preventing an indoor swimming pool with a concrete structure from being eroded by chlorine gas. The invention has the technical scheme that non-prestressed steel bars which are processed by an advanced hot galvanizing method are adopted in posts and a roof with concrete structures; when prestressed steel bars are adopted in the concrete structure of the roof, the prestressed steel bars adopt non-adhesive prestressed steel stranded wires; the concrete contains polypropylene fiber, the consumption of which is 0.5-2.5 kg/m<3> concrete; and the weight ratio of chlorine ions to cement in the concrete of unit volume is smaller than or equal to 0.1%. In the method of the invention, the strength grade of the concrete can reach more than C40 grade, the swimming pool with the concrete structure can be safely used within the normal concentration range of chlorine ions, and the erosion caused by environmental factors is reduced. The adoption of the polypropylene fiber can obviously improve the durability of the concrete structure, thus compared with the common concrete, the anti-leakage capacity of the concrete containing the polypropylene fiber is improved by more than 70%, and the service life of the swimming pool is prolonged and can be prolonged by more than 60%. Therefore, the invention has better application value and popularization value.

The present invention refers to a new compound containing Silymarin with Carbopol for the treatment of Diabetes Mellitus. This compound morphologically and structurally regenerates the damage that occurs in the pancreatic tissue in Diabetes Mellitus, and regenerates the insulin-producing pancreatic cells (β cells). It therefore regulates the serum levels of this hormone. Furthermore, it restores and maintains the normal concentrations of the blood glucose.