48 results about "Weak solution" patented technology

A waste heat source (100) is used to heat a high temperature heat transfer fluid which is used to heat an absorption heat transfer machine (10) having a generator (20), an absorber (30), a condenser (40), and an evaporator (50) operatively connected together. The high temperature heat transfer fluid can also be used to heat a load (190) such as a room space or a process. The waste heat source (100) can also be used to heat an intermediate heat transfer fluid, which can be used to heat a second load (175) such as a space, a process, or an absorption heat transfer machine. Novel flow control devices (70, 60) for controlling the flow of weak solution from generator (20) to absorber (30) or of refrigerant from condenser (40) to evaporator (50), respectively, are also described.

The invention discloses a whole blood CRP detection apparatus, a method thereof, and a blood cell analyzer. The apparatus comprise a syringe unit, a weak solution distribution unit, a DIFF channel measuring unit, a reagent unit, a counting chamber unit, a sampling needle, a negative pressure chamber and a waste liquid discharge unit; the reagent unit comprises a weak solution, a WBC reagent, a DIFF reagent and a second CRP reagent; and the counting chamber unit comprises a CRP pool, a DIFF pool, a WBC pool and an RBC pool, and is used for completing a reaction of a CRP channel sample with the CRP reagent, a reaction of a DIFF channel sample with the DIFFC reagent, a reaction of a WBC channel sample with the WBC reagent and a reaction of an RBC channel sample with a reagent. The apparatus and the method can be used to simultaneously detect CRP and five-classifications blood routine examination, and have the characteristics of parallel detection of all detection channels, and fast test speed.

The invention relates to a two-pore film and it's preparing technique. The said two-pore film comprises anion exchange layer, cation exchange layer and inter boundary layer, wherein inter boundary layer catalyst is formed by branch polymer of organic manipulation which has molecule structure's repetitive unit contains nitrogen atom and outmost amino, or end amino modifying substance of the polymers. Its preparing method is that first preparing anion exchange layer, and preparing anther anion exchange layer solution with opposite electricity, then preparing catalyst weak solution of inter boundary layer and fixes its catalyst on anion exchange layer by absorbing and blanketing modes, or mixes the catalyst with anion exchange layer solution and then preparing it by slobbering mode.

The invention relates to the field of digital images, and discloses an environment-friendly high-luster weak solvent portrait medium and a preparation method thereof. The environment-friendly high-luster weak solvent portrait medium comprises a base material, an adhesion promoting layer and a high-luster weak-solvent blotting layer; one surface of the base material is provided with the adhesion promoting layer; and the surface, far away from the base material, of the adhesion promoting layer is provided with the high-luster weak-solution blotting layer. The high-luster weak-solution blotting layer comprises the following compositions in parts by mass: 64 parts of a polyurethane acrylate modified emulsion, 32 parts of an acrylic resin emulsion, 3 parts of an antistatic agent, 0.1 part of a brightening agent, 0.5 part of a levelling agent, 0.2 part of a wetting agent, and 0.2 part of an antifoaming agent. Organic solvents such as ethanol, methanol, isopropanol and the like are not employed in the preparation process, so that discharge of volatile organic compounds (VOC) is eliminated; discharge of toxic harmful solvents such as cyclohexanone, butanone and the like is eliminate during usage, forced ventilation is not needed, and the problems are solved that a high-luster weak-solvent portrait medium prepared from a conventionally used acrylic emulsion is easy to adhere and cannot unwind.

This invention relates to a multistage solution dehumidification method characterizing the solution dehumidification is classified into two or more stages, each stage solution circulates independently with different concentration, yet single-way transition exists between stages from high to low density and the most condensed solution stage is supplemented a certain amount of solution from outside and the weak solution stage exhausts a certain amount of solution, then the being processed gas will be dried via stages. This invention utilizes various cooling and gas-liquid contact way flexiblely.

The invention relates to a preparing method of a rare earth (III)-transition (II) mixed metal fluorescence complex constructed by means of 8-hydroxyquinoline ligand and the application of the complex in fluorescence probes. The chemical formula of the complex is [Ln2M2(CH3OH)2(eq)4(NO3)4(CH3O)2], wherein Ln is plus trivalence lanthanide rare earth ion Dy(III) or Tb(III), M is plus bivalence transition metal ion Co(II) or Ni(II), eq is minus univalency negative ion of 8-hydroxyquinoline, and CH3O is deprotonated methyl alcohol negative ion. The complex is prepared by means of the solvothermal method, the yield is high, and fluorescence emission intensity is high. The mixed metal complex can recognize copper (II) ions or iron (III) ions in a highly selective mode in weak solution, and therefore the mixed metal complex can be applied to positive ion recognition and detection as a fluorescence probe compound.

The invention provides a method for detecting canine rabies virus antibody (IgG) and a detection kit. The kit is composed of a coated plate and a reagent reaction system, and comprises a rabies virus antigen-coated reaction plate, a standard substance, positive contrast serum, a washing lotion (20X), a sample weak solution, an enzyme-marked combination substance, a developer A, a developer B and a stopping solution. The method is characterized in that the method uses an ELISA method to determine that the content of the canine rabies virus antibody (IgG) reaches a absorbance corresponding to a protective level by detecting the standard substance of the kit, and by compared the absorbance of the sample to be detected with the absorbance of the standard substance, the content of the canine rabies virus antibody (IgG) contained in the sample to be detected is judged whether to reach an immunization protective level. The method and the kit can simultaneously detect a lot of samples, and a detection result is remarkably with a result by a neutralization experiment, has high accuracy degree, is suitable for monitoring an immunization inoculation effect and determining an individual immunization state, and can be used for investigating animal eqpidemic diseases.

The invention relates to preparation of an ELISA kit for detecting deoxynivalenol. The kit with sensitive detection, accuracy, fastness, simple operation and strong specificity is suitable for determination of a large number of samples. The kit includes an ELISA plate coated with deoxynivalenol antigens, a deoxynivalenol standard sample, a deoxynivalenol antibody working solution, an enzyme-labeled?second antibody working solution, a substrate solution A, a substrate solution B, a stop solution, a concentrating sample weak solution and a washing concentrate. The principle of the deoxynivalenol detection kit is solid phase indirect competitive enzyme-linked immunosorbent assay. An extracted sample, the enzyme-labeled?standard second antibody working solution and the antibody working solution are added to corresponding enzyme-labeled holes; after incubation for a period of time, the substrate solution A and the substrate solution B are added into a washing plate; under the action of the enzyme, blue color occurs in the holes; and the stop solution adding is added in, and the color changes from blue to yellow. The degree of color is in inverse proportion relationship with the content of deoxynivalenol in the standard substance or sample. The method can be directly used for detecting deoxynivalenol in cereals and cereal products.

The invention relates to a pepsinogen I and II combined detection method and a kit, and especially relates to a dual wavelength fluorescence immunity chromatography combined detection method of pepsinogen I and II and a detection kit thereof. The method comprises the following steps: 1)preparing an immunity chromatography test strip; 2)preparing a freeze-dried probe; 3)preparing a sample weak solution; and 4)examining the sample. The pepsinogen I and II combined detection method and the kit have the advantages of high sensitivity, high accuracy, simple operation and low cost.

The invention relates to preparation of an ELISA kit for detecting plasticizer (DBP). The kit with sensitive detection, accuracy, fastness, simple operation and strong specificity is applicable to determination of a large number of samples. The kit includes an ELISA plate coated with plasticizer (DBP) antigens, a plasticizer (DBP) standard sample, a plasticizer (DBP) antibody working solution, an enzyme-labeled second antibody working solution, a substrate solution A, a substrate solution B, a stop solution, a concentrating sample weak solution and a washing concentrate. The principle of the plasticizer (DBP) detection kit is solid phase indirect competitive enzyme-linked immunosorbent assay. An extracted sample, the enzyme-labeled standard second antibody working solution and the antibody working solution are added to corresponding enzyme-labeled holes; after incubation for a period of time, the substrate solution A and the substrate solution B are added into a washing plate; under the action of the enzyme, blue color occurs in the holes; and the stop solution is added in, and the color changes from blue to yellow. The level of coloration is in an inverse proportion relation with the content of plasticizer (DBP) in the standard substance or the sample. The method can be directly applied to detection of plasticizer (DBP) content in liquor samples.

The invention discloses a method for rapidly synthesizing a nanogold quantum dot through a dual reducing agent at the indoor temperature. The method comprises the steps that sodium citrate and ascorbic acid act on a chloroauric acid weak solution at the same time; and a reduction reaction of gold ions in the solution can be completed during tens of seconds, and the dimension of a product is approximately 1-30 nanometers. According to the rapid synthesis method for the nanogold quantum dot through the dual reducing agent at the indoor temperature, the particle dimension is small, the reaction is fast, the operation is simple and easy to control, the cost is low, and the method is a gold nanoparticle synthesis method.

The invention relates to the material surface modification technique and provides a method for modification of a polyurethane film for protective glass. The method comprises the steps of mixing a silane coupling agent KH550, deionized water and absolute ethyl alcohol to obtain a silane coupling agent KH550 weak solution; then stirring at 30 DEG C for 8 h till sufficient hydrolysis; placing the washed and dried polyurethane film in the weak solution, and conducting ultrasonic treatment at 30 DEG C for 1-10 min; taking the polyurethane film out, and conducting washing and drying to obtain the surface modified polyurethane film. Compared with the original polyurethane film, the modified polyurethane film has the advantages that light transmittance is improved greatly, the contact angle of the surface of the film is reduced remarkably, which means surface tension is increased, and surface wetting ability is improved; bonding strength is improved, and the light transmittance of the protective glass obtained through recombination of the modified film is improved. According to the method, operation is easy and practical, cost is low, application in production practice is easy, and the method can be used for improving the organic-inorganic bonding strength of compound glass.

The invention relates to an ammonia power or refrigerating composite circulating system with an adjustable output cold power ratio. An exit solution of an ammonia power or refrigerating circulating system absorber ABS2 is divided by a shunt SP3 and one of divided solutions is pressurized by a pump P2, goes through a switch S3, is mixed with a solution of an absorption type refrigerating circulating system in a mixer M1, heated by a solution heat exchanger SHE and sent to a generator DE. A weak solution sent out from an exit of a rectifying tower REC1 in the ammonia power or refrigerating circulating system exchanges heat in a heat exchanger HE2, goes through an expansion valve V1 and is divided by a shunt SP2. One of divided solutions goes through a switch S2, is mixed with an exit solution of the generator DE of the absorption refrigerating system in a mixer MX2 and enters into an absorber ABS3. A solution of an exit of the absorber ABS3 is divided by a shunt SP4 and one of divided solutions goes through a switch S1 and enters into an absorber ABS1. Two systems operate in a coupling mode or in an isolated mode through opening and closing of the S1, the S2 and the S3.

The invention discloses a solar latent heat recovery type vacuum membrane distillation regenerative solution dehumidification system and belongs to the technical field of solution dehumidification systems. The solar latent heat recovery type vacuum membrane distillation regenerative solution dehumidification system comprises a solar heat collection module, a solution vacuum membrane distillation regenerating module, a solution dehumidification module and a latent heat recovery module which are all connected. The invention further discloses a dehumidification method of the solar latent heat recovery type vacuum membrane distillation regenerative solution dehumidification system. According to the solar latent heat recovery type vacuum membrane distillation regenerative solution dehumidification system and method, the solar radiation energy serves as a drive source, energy storage of a solution is achieved, the high-density energy storage performance of the saline solution can overcome the discontinuity of the solar energy, when air dehumidification is needed, a concentrated solution is fed into a dehumidifier, and air humidity adjusting is achieved while dehumidification is carried out on the treated air. The dehumidified weak solution is fed into a weak solution storage tank through a weak solution pump, when a solar heat collector works, the weak solution in the weak solution storage tank is fed into a heat exchanger to be preheated, the preheated weak solution enters a condenser to continue to absorb latent heat in steam, and finally the weak solution flows into the solarheat collector to carry out heating.

A solution concentration method characterizes in classifying the solution into 2-6 stages according to the differential concentration range of strong solution and weak solution in which the condensed range of each stage solution is only a part of entire solution concentration range, that is partial concentration and a complete concentration range is formed by combining the multistage, so as to realize multistage concentration. Energy can be used many times under different conditions during the 2-6 stages concentration, namely, not need energies from outside.

The invention discloses a nonlinear filtering method for underwater navigation, and is used to solve a weak solution from a random differential model of underwater terrain navigation. According to the invention, segmental approach to a weak solution of a navigation random differential model is performed by using a cubic spline interpolation function so as to obtain a prior probability density function of a state, wherein difficult problems for constructing a cubic spline interpolation point are solved by using a forward Kolmogorov equation, and a posterior probability density function of the state is obtained by a Bayes formula. The method of the invention makes full use of the cubic spline interpolation, has the characteristics of simple calculation, good stability, guaranteed convergence, easy realization on computers, and guaranteed smoothness of a whole curve, can track various possibility of the system state better, has extremely high estimation accuracy, convergence speed, and convergence smoothness, and can track the change of the system state well.

The invention discloses a comprehensive extraction and utilization production technology for propolis. The method comprises the following steps: 1) pretreatment; 2) mixing; 3) non critical fluid extraction; 4) removal of n-butane through ultimate vacuum; 5) addition of a weak solution for mixing; 6) removal of n-butane through ultimate vacuum; 7) de-waxing; and 8) solid-liquid separation. The invention employs an extraction technology by taking low-temperature non critical fluid n-butane as a solvent, Brazilian A-grade propolis is taken as a raw material, and the propolis particles can be prepared by steps of selection, refrigeration at the temperature of -10 DEG C, crushing, blending with rice husk, extraction by employing non-critical fluid, screening, freeze drying, crushing and package, and propolis premix liquid is prepared by the steps of desolvation through ultimate vacuum, addition of a diluents, de-waxing, filtering and package. propolis yield is 30-35%, the general flavone content is 22-25%, the general flavone content in propolis freeze-drying powder is 22-25%, and the lead content is 0.48-0.50 mg / kg.

The invention discloses a magnetotelluric forward modeling method and device based on a ground-air decomposition strategy and a storage medium. The method comprises the following steps: constructing ageoelectric geometric model for solving a three-dimensional MT of a region according to digital terrain data (DEM); discretizing the geoelectric geometric model into a series of tetrahedron units; obtaining an integral weak solution form satisfied by A-phi-psi coupling potential three-dimensional MT forward modeling based on a ground-air decomposition strategy, and performing node discretization-based conversion on the integral weak solution form to obtain a sparse linear equation set; loading a right-end term of the incident field placed in the sparse linear equation set and solving the sparse linear equation to obtain a vector bit A, a scalar bit phi and a scalar bit psi of each node of the tetrahedron unit in the solving area; calculating parameters of the observation point according to the vector bit A, the scalar bit phi and the scalar bit psi. The method has a promotion effect on large-scale three-dimensional magnetotelluric method inversion research, and has important practicalsignificance and value for promoting subject development and improving the academic level of electromagnetic method data interpretation.

The invention relates to a pepsinogen II detection method and a kit, and especially relates to a dual wavelength fluorescence immunity chromatography detection method of pepsinogen II and a detection kit thereof. The method comprises the following steps: 1)preparing an immunity chromatography test strip; 2)preparing a freeze-dried probe; 3)preparing a sample weak solution; and 4)examining the sample. The pepsinogen II detection method and the kit have the advantages of high sensitivity, high accuracy, simple operation and low cost.

The invention relates to a method for recycling pyridine from a pharmaceutical waste liquid and belongs to the field of recycling method of wastes. The method for recycling pyridine from the pharmaceutical waste liquid comprises following steps: (1) filtering and pre-treating the pharmaceutical waste liquid; (2) mixing a potassium fluoride solution having a certain concentration with the pre-treated pharmaceutical waste liquid according to a certain mass proportion to obtain a mixture; (3) feeding the mixture to a layering device and allowing the mixture to stand for three hours for layering; (4) feeding a water-enriched phase after layering to an evaporator with steam at 140 DEG C being fed; and (5) recycling concentrated strong salt water back to the layering device for recycling. In the method recycling pyridine from a pharmaceutical waste liquid, the pyridine can be recycled from the pharmaceutical waste liquid through common rectification and a salt-adding phase-separating method are employed. When a mass ratio of the potassium fluoride solution being 60% in concentration and a material composed of 50% of the pyridine and 50% of water is 2.0, purity of the pyridine in an organic phase can reach 92.60%. A separation performance of a potassium fluoride weak solution in the water phase is not influenced after being recycled through the evaporator. The method is simple in process, is convenient to operate and is low in cost.

The invention discloses a staphylococcus drug-sensitive strip. The staphylococcus drug-sensitive strip is prepared by the following steps: (1) preparation of a weak solution of an antibiotic; (2) split charging; (3) preparation of a stock solution; (4) split charging of a liquid material; (5) sample adding and split charging of strips; (6) drying of the strips; and (7) vacuum packaging. According to the invention, the storage life of the drug-sensitive strip is prolonged since the antibiotic and an anti-oxidant are added into the strip; moreover, vacuum packaging is employed, so oxidation of the antibiotic is prevented, the drug-sensitive strip can be preserved at a temperature of 2 to 25 DEG C and is more convenient to store, and energy is saved. The drug-sensitive strip can reduce propagation of drug-resistant bacterial strains and is beneficial for treatment of patients. When the drug-sensitive strip is applied to a statistic analysis system, epidemiological analysis in each region and each hospital in a period of time can be carried out according to different statistical conditions, so prevention, treatment and monitoring effects are exerted on variation of special drug-resistant bacterial strains and diseases; and the drug-sensitive strip has important guiding significance to clinical practice and a great application value.

The invention discloses a sample dilution method and an apparatus, a sample analysis apparatus and a storage medium. The sample dilution method comprises at least a dilution step, each dilution step comprises a primary sample absorption process and at least a weak solution absorption process in order until all the dilution processes are completed, and a diluted sample is obtained from a reaction cup corresponding to the final dilution process. wherein, the sample absorption process is characterized in that a to-be-diluted sample of a first predetermined amount is absorbed, the absorbed to-be-diluted sample is added in the reaction cup corresponding the dilution process, the weak solution absorption process is characterized in that a weak solution of a second predetermined amount is absorbed, and the absorbed weak solution is added in the reaction cup corresponding the dilution process, wherein the weak solution comprises a rinse-solution or a reagent. By employing the technical scheme,under prerequisite that a configuration process of a specific weak solution and a storage apparatus are not added, and an automatic dilution function of a high concentration sample is realized.

The invention relates to an airborne laser sounding echo signal processing method based on multiple physical fields, and aims at solving the problem that sea surface and seabed echo signals cannot beaccurately found in the prior art. A Darcy seepage equation is coupled with a nonlinear diffusion equation, the physical property of an echo signal is used for replacing the geometrical property of the echo signal, a point diffusion function is constructed by utilizing the local physical property, and the received echo signal is used as the permeability of a porous medium. Coupling of a pluralityof equations under the condition of meeting initial boundary values is shown on a mathematical model, and a signal processing result is an overall weak solution of an evolution equation set in space.The method has the advantages that the sea surface and seabed echo signal positions can be accurately determined, so that depth measurement is realized.

The invention discloses a two-stage absorption refrigeration circulation system based on double working pairs and a refrigeration method thereof. The circulation system comprises a refrigeration working medium circulation loop, a low pressure side lithium bromide solution circulation loop and a high pressure side lithium chloride solution circulation loop. According to the two-stage absorption refrigeration circulation system based on the double working pairs and the refrigeration method thereof, refrigeration media enter a low pressure side absorber after coming out of an evaporator to be adsorbed by lithium bromide solution, lithium bromide weak solution in the low pressure side absorber is pumped into a low pressure side generator and absorbs heat in the low pressure side generator to produce working medium steam under intermediate pressure, the working media then enter a high pressure side absorber and are absorbed by lithium chloride saline solution with a higher steam pressure, lithium chloride weak solution in the high pressure side absorber enters a high pressure side generator and absorbs heat to produce high-pressure working medium steam, the high-pressure working medium steam enters a condenser and is cooled to be liquid in the condenser, and then the liquid working media enter the evaporator after being throttled and evaporate and absorb heat in the evaporator and output cold air. According to the two-stage absorption refrigeration circulation system based on the double working pairs and the refrigeration method thereof, temperature of a driving heat source of the absorption refrigeration system is reduced to less than 75 DEG C through series connection of the double absorption working media with different steam pressures, the low-grade heat energy utilization warm area is enlarged, the utilization rate of low-grade heat energy is improved, and the application prospect is wide.

The invention relates to a technology for producing light color technical braiding paper, which comprises the following steps: A) adding a cation stripping agent accounting for 0.015-0.03% of slurry mass; B)mixing a pigment / dye mixed liquor according to the required color; adding the pigment / dye mixed liquor while pulp refining until the slurry degree is 35-45 DEG SR; D)adding water in a wet strength agent according to 0.25-0.3% of slurry mass for diluting until concentration is 15-25%; E)adding a wet strength agent weak solution while slurry merging; and F)making paper, netting, performing suction filtration, squeezing and drying to obtain the paper. By employing the technology, the cation stripping agent is added while slurry crushing, the cation charge is combined with wood pulp fiber, then a pigment is added, so that pigment is completely attached on the surface of fiber, combination power is increased, and the pigment can not dissociate in a pigment solution and can not be attached on the wall of a slurry barrel. According to the invention, time for flushing a paper making barrel and a pipeline through shutdown is prolonged than that of an original technology, color is stable, and no color point is generated.

The invention discloses an echinococcosis granulosa ELISA antibody detection kit. The detection kit comprise an EgAgB8 / 2 recombinant antigen pre-coating enzyme label plate, a sample weak solution, positive contrast liquid, negative contrast liquid, an enzyme conjugate, washing liquid, a substrate coloring solution and a stopping solution. A method for preparing the EgAgB8 / 2 recombinant antigen comprises the following steps: using RT-PCR for amplifying EgAgB8 / 2 gene cDNA, cloning an EgAgB8 / 2 gene, constructing a prokaryotic expression vector pET-EgAgB8 / 2, and performing expression in escherichia coli BL21(DE3), using the IPTG-induced prokaryotic expression vector for expression, performing centrifugation to collect thalline, using a bacteria lysate for dissolving, and performing ultrasonicfragmentation, performing centrifugal collection of a supernatant, and using a Ni-NTA glue for purification. The kit takes recombinant protein EgAgB8 / 2 as antigen to detect an animal echinococcosis granulosa antibody, can be used for qualitative detection of the animal echinococcosis granulosa antibody, and has the advantages of stable antigen source, good specificity, high sensitivity, and good repeatability.

The invention relates to a pepsinogen I detection method and a kit, and especially relates to a dual wavelength fluorescence immunity chromatography detection method of pepsinogen I and a detection kit thereof. The method comprises the following steps: 1)preparing an immunity chromatography test strip; 2)preparing a freeze-dried probe; 3)preparing a sample weak solution; and 4)examining the sample. The pepsinogen I detection method and the kit have the advantages of high sensitivity, high accuracy, simple operation and low cost.

The invention provides a hydrophobic associated polymer molecular weight distribution curve testing method. According to the method, hydrophobic association in a hydrophobic associated polymer solution is eliminated firstly under a proper solvent condition, polyelectrolyte effect is shielded, so that macromolecules are in a unimolecular dispersion state in a weak solution, then millipore filter membranes with different pore diameters are selected based on the membrane pore size separation principle, and a hydrophobic associated polymer is graded by means of a millipore filter membrane flow test device so that polymers with different molecular weights are separated; fitting of a percolate mass and filtration time relation curve is conducted with a quadratic equation so as to obtain the mass of a polymer solution in any grade, the concentration of the polymer solution in any grade is measured with the spectrophotometric method, and then the accumulated percentage composition of each grade is calculated. The molecular weight of the hydrophobic associated polymer in any grade is measured accurately with the static light scattering and viscosity method, and a molecular weight integral distribution curve or differential distribution curve is obtained according to the molecular weight of each grade and the accumulated percentage composition.