35results about How to "Determination of precision" patented technology

The invention relates to a method for evaluating the fungus destroying effects of disposable sanitary accessories. The method comprises the detection steps of determining requirements of sample extraction and the like; performing type selection of equipment, and compounding a reagent and culture mediums; performing strain preservation, performing strain activation and preparing bacterium suspension; counting the viable bacteria content C of bacterium suspension after methylene blue dyeing with a hemocytometer, and performing calibration on C of inoculation bacterial liquid; establishing a standard curve of the lgC-relative fluorescence intensity logarithm value lgI ; performing neutralizer identification and performing bacterium destroying experiment; determining I of recovery liquid, and reckoning viable bacteria content C and viable bacteria content T; calculating bacterium destroying rate R and bacterium killing index A; and performing result evaluation. The method has the characteristic that the fungus destroying effects which are represented by R or A, of the sanitary accessories can be accurately and quantitatively evaluated through an ATP fluorophotometer. Control samples and experiment samples after fungus infection for different time are eluted and recovered according to the specification of the invention, the I of the recovery liquid is determined and represented by lgI, and R or A is calculated; and a result evaluation base is provided. According to the ATP biofluorescence lgC-lgI standard curve method for detecting the fungus destroying properties of the disposable stainless steel, researched and developed by the invention, product quality increase is supported through an advanced detection technique.

The invention discloses a method for detecting barium ions in oil field water. The method comprises the following steps: taking an oil-water sample; adding hydrochloric acid solution and methyl red indicator into the sample; adjusting the solution to yellow by ammonia solution; adding acetic acid-ammonium acetate buffer solution into the mixture; heating and boiling the mixture; dripping potassium chromate solution into the mixture; boiling the mixture once more; adding the acetic acid-ammonium acetate buffer solution into the mixture; standing the mixture to room temperature; filtering and abandoning initial filtrate; taking the filtrate; adding distilled water into the filtrate; adding potassium iodide and sulfuric acid solution into the mixture; shaking the mixture evenly, and placing the mixture in a dark position; titrating the mixture by sodium thiosulfate standard solution; adding starch indicating solution into the mixture; recording consumption V of the sodium thiosulfate solution; and calculating the concentration of the barium ions in the oil field through the formula of the consumption V0 of the recorded sodium thiosulfate solution. By adopting the method for detectingthe barium ions, the concentration of the barium ions in the oil field can be accurately and precisely detected, and the requirement of quick and accurate analysis on scaling ions Ba<2+> can be met.

A multi-parameter rapid detection device and detection method for water bodies of the present invention, the device includes a microfluidic chip module, and the microfluidic chip module includes a dielectrophoretic bacteria sorting chip module, an impedance bacteria testing chip module, and an extraction fluorescence testing chip module , Electrophoresis ion chip module; four inlets are set on the microfluidic chip module, inlet one is used as sample inlet, inlet two, inlet three and inlet four are respectively used as buffer inlet one, buffer inlet two and buffer inlet three; the present invention The device adopts microfluidic technology, realizes precise flow control of liquid through microchannels and microvalves, and highly integrates multiple pretreatment and detection modules on a small plastic sheet, which has a high degree of integration and efficient mass transfer and detection speed. The whole device has strong portability, high detection speed and timeliness. Integrate multiple modules on the same chip to achieve joint detection of multiple parameters, and only need to input one sample, making the detection accuracy higher.

The invention relates to the technical field of methods for determining the preservation state of a water-saturated wooden cultural relic, and provides a rapid nondestructive testing method for the preservation state of the water-saturated wooden cultural relic, which comprises the following steps: a cleaning step: cleaning the surface of the water-saturated wooden cultural relic; a testing step: testing the waterlogged wooden cultural relics by using a spectrograph; a data acquisition step: acquiring spectral data after the test of the spectrograph, and processing the spectral data; a correction model establishing step: establishing a correction model of the preservation state of the waterlogged wooden cultural relic; and a storage state determination step: testing spectral data and clustering behaviors of the water-saturated wooden cultural relics through the previous steps, and determining the storage state of the water-saturated wooden cultural relics. By adopting the technical scheme, after the test step and the data acquisition step, the step of establishing the correction model and the step of measuring the preservation state are adopted, so that the preservation state of the water-saturated wooden cultural relic can be accurately measured, and the method has the advantages of no destructive sampling damage and high test speed.

The invention relates to a fogdrop deposition amount measuring device based on metal ion concentration detection. The fogdrop deposition amount measuring device comprises a collection module, an ion sensing detection module, a processing analysis system, a wireless transmission module and a power supply module. The collection module comprises a fogdrop collection box, a deionized water storage chamber, a mounting fixing box and a sampling fixing device, the fogdrop collection box is a container for receiving the fog drops sprayed by a plant protection machine and is mounted together with the mounting and fixing box, and the lower part of the mounting and fixing box is communicated with the fogdrop collecting box. The ion sensing and detecting module is mounted in the mounting and fixing box, and the processing and analyzing system, the wireless transmission module and the power supply module are mounted at the top of the mounting and fixing box. The invention provides a droplet deposition amount measuring device and method based on metal ion concentration detection, and by combining with a calibration database, the relationship between concentration and deposition amount is calculated quickly and accurately, so that the droplet deposition amount is obtained, and the data is stored and displayed in real time.

The invention relates to a method for detecting anti-fungal performance of coated antibacterial glass. The method for detecting the anti-fungal performance of the coated antibacterial glass comprises the steps that sample preparation and pretreatment are carried out; equipment model selection and reagent and culture medium preparation are carried out; culture preservation and excitation and bacterium suspension preparation are carried out; viable bacterium content C blood cell plate counting of a bacterium suspension and inoculating bacterium solution C calibration after methylene blue staining are carried out; an lgC-relative fluorescence intensity log value lgI standard curve is established; sample inoculating, cultivating, eluting and recycling are carried out; recycled solution I measurement and viable bacterium content C and T calculation of a recycled solution are carried out; the antibacterial ratio R or an antibacterial activity value A is calculated; and a result is evaluated. The method for detecting the anti-fungal performance of the coated antibacterial glass is characterized in that an ATP fluorophotometer is used for accurately and quantitatively testing the glass anti-fungal performance represented by R or A. According to the method for detecting the anti-fungal performance of the coated antibacterial glass, it is stipulated that control samples and antibacterial samples are recovered by elution after contact for 0h and cultivating for 24h / 48h and recycled, and a recycling solution I is measured and lgI is used for representing and calculating R or A; and a result evaluation basis is provided. According to an ATP bioluminescence lgC-lgI standard curve method for detecting anti-fungal performance of the coated antibacterial glass, an advanced detection technology can be used for supporting product quality improvement.

The invention relates to a detection method for mold resistance of antibacterial paint. The detection method comprises the detection steps of performing sample extraction, preparing and preprocessing; performing equipment selection and preparing a reagent and a culture medium; preserving and activating strains, and preparing a bacterium suspension; establishing a standard curve of the OD value-viable bacteria content log lgC, and performing calibration on C of inoculated bacterial liquid; establishing a standard curve of a lgC-relative fluorescence intensity log lgI ; performing sample inoculating, culturing, eluting and recovering; performing IB determination of the recovered liquid, and reckoning the viable bacteria content C and T; calculating antibacterial rate R or antibacterial activity value A; and performing result evaluation. The method has the characteristics that the mold resistance, expressed by R or A, of the paint is subjected to pinpoint quantitative test through an ATP fluorophotometer. Control samples and antibacterial samples after contact for 0h and culture for 48h are eluted and recovered according to the specification of the invention, the I of recovered liquid is measured and expressed with lgI, and R or A is calculated. A result assessment basis is provided. The ATP biofluorescence lgC-lgI standard curve method for detecting mold resistance of the antibacterial paint, which is researched and developed by the invention, supports improvement of product quality by a scientific and advanced detection technique.