Low-temperature vacuum themal dissociation waste printed wiring board preprocessing method

Combined calomel electrode

The new-type combined calomel electrode is a device joining original calomel electrode and sample cell for measuring pH value together. Said device only has need of 0.1ml of sample and can be used for measuring pH value of micro samples, such as sweat, ptysma, tear and micro body fluid of experimental animal etc.

Combined type processing method for waste printed wiring board

杀线虫生防菌代谢物及其制备方法

A Syncephalastrum racemosum metabolite and its preparation method. The Syncephalastrum racemosum metabolite comprises dicarboxyl with two crystal waters and dicarboxyl complex with 8 dentate potassium, as well as tartaric acid, malic acid and lactic acid. The method comprises, taking Syncephalastrum racemosum as the bacterial strain, preparing active metabolite by introducing gases into liquid. The metabolite is water soluble, could kill a wide range of wirewooms and has a high thermal stability.

Quantitative analysis method for all form sulfur component of light carbon and its fractional distillation product

The utility model discloses a qualitative method and a quantitative method for analyzing various sulphur components of the light hydrocarbon and the fractionation products, wherein the qualitative method is to analyze the products with the adoptive gas phase mass spectrometer for obtaining the spectral configuration and then to determine the quality with the mode of combining the searching of standard atlas database and keeping time of the standard sulphur sample. The quantitative method is to use the gas chromatography combining cubic spline curves for determining the quantity. The utility model has the advantages that the establishment of the qualitative and the quantitative analysis methods for various sulphur components can provide necessary, accurate and effective data for utilizing the art of sulfur removal with light hydrocarbon fractional device and meanwhile can offer the foundation for determining the desulfurization catalyst for the device and guiding the production.

Method for synthesizing cetyl diphenyl ether sodium disulfonate and use

The invention relates to a synthesizing method and usage of hexadecyl diphenyl ether sodium disulfonate, mainly solving the problems that existing production methods lead to bad degradation capability, high cost and low active matter content and that petroleum sulfonate which is a component of existing oil-displacing agents is not durable in hard water. The invention is characterized in that, in the synthesizing method of the hexadecyl diphenyl ether sodium disulfonate, high-purity cetene and diphenyl ether which are produced through the ethylene oligomerization process undergo alkylation to generate hexadecyl diphenyl ether and then undergo sulfonation to generate hexadecyl diphenyl ether disulfonic acid, and finally neutralization is carried out to obtain the hexadecyl diphenyl ether sodium disulfonate. The hexadecyl diphenyl ether sodium disulfonate is used as a surface active agent of the oil-displacing agent for tertiary oil extraction. The surface active agent can be compounded to ...

Eelworm killing biocontrolling bacteria metabolite and production method

Quantitative analysis method for all form sulfur component of light carbon and its fractional distillation product

The utility model discloses a qualitative method and a quantitative method for analyzing various sulphur components of the light hydrocarbon and the fractionation products, wherein the qualitative method is to analyze the products with the adoptive gas phase mass spectrometer for obtaining the spectral configuration and then to determine the quality with the mode of combining the searching of standard atlas database and keeping time of the standard sulphur sample. The quantitative method is to use the gas chromatography combining cubic spline curves for determining the quantity. The utility model has the advantages that the establishment of the qualitative and the quantitative analysis methods for various sulphur components can provide necessary, accurate and effective data for utilizing the art of sulfur removal with light hydrocarbon fractional device and meanwhile can offer the foundation for determining the desulfurization catalyst for the device and guiding the production.

Method for refining 4 - (3,4 - dichlorobenzene group) - 1 - tetralin ketone

This invention discloses a method for refining 4-(3,4-dichlorophenyl)-1-tetralone. The method comprises: adding 4-(3,4-dichlorophenyl)-1-tetralone and solvent at a ratio of 1:(3-4) into a three-necked flask with a stirrer, heating under stirring until 4-(3,4-dichlorophenyl)-1-tetralone is completely dissolved, heating to 60-100 deg.C, refluxing for 0.5-2 h, cooling the filtrate to -5-10 deg.C, filtering, recrystallizing to obtain refined 4-(3,4-dichlorophenyl)-1-tetralone, and drying at 40-80 deg.C to obtain dry 4-(3,4-dichlorophenyl)-1-tetralone. The method has such advantages as high purity, short time, high yield, and stable product quality.

Computerised information generating method using digital marking English alphabet international phonetic transcription

The invention supplies a computer information creating method by using digital indicating English letter international phonetic alphabet. It is digital encoding with computer program of English letter international phonetic alphabet, and is a computer technology supported method to organization of teaching English like Chinese method. The invention can be used in character inputting into computer, the word process of communication and communication devices, printing of electric dictionary, dictionary and textbook.

Composite type metal movable floor

The invention relates to a composite type metal movable floor which is used for a place with high-cleanliness environmental requirements. By aiming at the shortages of low elasticity modulus, small yield strain process, easy brittle failure generation and high production cost in the traditional aluminum-alloy movable floor, the invention provides a composite type metal movable floor which has the advantages of high mechanical strength, high elasticity modulus, large yield strain process and low production cost and is not easy to generate brittle failure. The composite type metal movable floor comprises a panel, frames and grilles, wherein the panel is manufactured by adopting aluminium alloy or magnesium aluminium alloy, the frames are manufactured by adopting profiled bars, and the grilles are manufactured by adopting steel plates; frame grooves are arranged around the bottom surface of the panel, the inner sides of the frame grooves of the bottom surface of the panel are provided with ...

Compatible scheme for English letters hanzified writing virtual strokes and Chinese-English shorthand notations

This invention relates to a method framework for encoding twenty-six English Latin alphabets with Chinese character and its components.The method is able to create new English words character symbol carrier to interpenetrate with Chinese character learning mode in appearance, besides, it also is able to improve vocabulary recognition reliability and supplies technological support for learning English.Compatibility scheme marks twenty-six English letters with virtual stroke to compress input number and reduce memory elements, while it uses Chinese character symbol with simple virtual stroke and the number of virtual stroke to form Chinese - English symbolic shorthand.