Abstract: A method and device for harmless treatment and recycling of waste refrigerators. Plastic parts, electrical boxes, compressors, and condensers are disassembled at a disassembling station. Refrigerants from compressors are recycled at a fluoride-extracting station. Refrigerator bodies and doors are transferred to a double shaft shredder and a rolling crusher for crushing. Crushed materials are sorted out by wind force, by a self-discharge type iron remover made of permanent magnet and a cylindrical iron remover for magnetic separation. The device is placed in an enclosed workshop equipped with a multistage ventilation system, a protective device of nitrogen, a device for spraying, dedusting, and cooling, and an on-line detection and alarm control device for cyclopentane gas concentration, polyurethane dust concentration, and temperature. The method and device have low manufacturing and operating costs and are dustproof, explosion proof, environmentally friendly and has excellent recycling effects.

Abstract: A method of cleaning an automatic biochemical analyzer, wherein the cleaning solution includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.

Abstract: A enhancing reagent for enhancing chemiluminescence of 1,2-dioxetane compounds and a method for using the enhancing reagent to enhance the chemiluminescence are provided, in which the enhancing reagent contains an alkyl bis-quaternary ammonium salt of Formula I. A chemiluminescent composition with a 1,2-dioxetane compound as a substrate and a kit thereof are further provided, which contain a 1,2-dioxetane compound and an alkyl bis-quaternary ammonium salt of Formula I.

Abstract: The present disclosure provides a chemiluminescent composition where the chemiluminescent substrate is 1,2-dioxetane, which contains 1,2-dioxetane and an alkyl dimethyl benzyl quaternary ammonium salt having the structure of general formula I. The present disclosure also provides an enhancing reagent and methods for enhancing chemiluminescence of 1,2-dioxetane, where the enhancing reagent contains an alkyl dimethyl benzyl quaternary ammonium salt having the structure of general formula I.

Abstract: Methods for preparing conjugates including enzyme conjugates and especially alkaline phosphatase (ALP) conjugates, and a kit are provided. The methods include: blocking an amino group on a molecule surface of a first substance to be conjugated containing an amino group and a carboxyl group (for example, an enzyme) with a carboxyl compound; adding a carbodiimide to activate the first substance to be conjugated with the amino group blocked; inactivating or removing the carbodiimide; and adding a second substance containing an amino group (for example, a substance to be labeled). Conjugates (for example, enzyme conjugates) are obtained.

Abstract: A method and device for harmless treatment and recycling of waste refrigerators. Plastic parts, electrical boxes, compressors, and condensers are disassembled at a disassembling station. Refrigerants from compressors are recycled at a fluoride-extracting station. Refrigerator bodies and doors are transferred to a double shaft shredder and a rolling crusher for crushing. Crushed materials are sorted out by wind force, by a self-discharge type iron remover made of permanent magnet and a cylindrical iron remover for magnetic separation. The device is placed in an enclosed workshop equipped with a multistage ventilation system, a protective device of nitrogen, a device for spraying, dedusting, and cooling, and an on-line detection and alarm control device for cyclopentane gas concentration, polyurethane dust concentration, and temperature. The method and device have low manufacturing and operating costs and are dustproof, explosion proof, environmentally friendly and has excellent recycling effects.

Abstract: A enhancing reagent for enhancing chemiluminescence of 1,2-dioxetane compounds and a method for using the enhancing reagent to enhance the chemiluminescence are provided, in which the enhancing reagent contains an alkyl bis-quaternary ammonium salt of Formula I. A chemiluminescent composition with a 1,2-dioxetane compound as a substrate and a kit thereof are further provided, which contain a 1,2-dioxetane compound and an alkyl bis-quaternary ammonium salt of Formula I.

Abstract: A enhancing reagent for enhancing chemiluminescence of 1,2-dioxetane compounds and a method for using the enhancing reagent to enhance chemiluminescence are provided, in which the enhancing reagent contains a multi-alkyl quaternary ammonium salt of Formula I. A chemiluminescent composition with a 1,2-dioxetane compound as a substrate and a kit thereof are further provided, which contain a 1,2-dioxetane compound and a multi-alkyl quaternary ammonium salt of Formula I.

Abstract: The present disclosure provides a chemiluminescent composition where the chemiluminescent substrate is 1,2-dioxetane, which contains 1,2-dioxetane and an alkyl dimethyl benzyl quaternary ammonium salt having the structure of general formula I. The present disclosure also provides an enhancing reagent and methods for enhancing chemiluminescence of 1,2-dioxetane, where the enhancing reagent contains an alkyl dimethyl benzyl quaternary ammonium salt having the structure of general formula I.

Abstract: Methods for synthesizing an ALP conjugate are provided. The methods may include activating a carboxyl group of the ALP with a carbodiimide, to generate an active ester; and adding the substance to be conjugated such that a synthetic reaction occurs between the active ester and the substance to be conjugated, to generate an ALP conjugate.

Abstract: Methods for preparing conjugates including enzyme conjugates and especially alkaline phosphatase (ALP) conjugates, and a kit are provided. The methods include: blocking an amino group on a molecule surface of a first substance to be conjugated containing an amino group and a carboxyl group (for example, an enzyme) with a carboxyl compound; adding a carbodiimide to activate the first substance to be conjugated with the amino group blocked; inactivating or removing the carbodiimide; and adding a second substance containing an amino group (for example, a substance to be labeled). Conjugates (for example, enzyme conjugates) are obtained.

Abstract: A method of cleaning an automatic biochemical analyzer, wherein the cleaning solution includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.

Abstract: A cleaning solution for automatic biochemical analyzers includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.

Abstract: The present disclosure relates to stabilizers for alkaline phosphatase or conjugates thereof, a process for preparing a stabilizer, and a method for stabilizing alkaline phosphatase or conjugates thereof with a stabilizer. The present disclosure also relates to a reagent of alkaline phosphatase or conjugates thereof as well as to a process for preparing the same. In another aspect, the present disclosure relates to a kit comprising the stabilizers disclosed herein and alkaline phosphatase or conjugates thereof. The stabilizer disclosed herein can stabilize alkaline phosphatase or conjugates thereof for a prolonged period of time, extending their shelf-life.

Abstract: A cleaning solution for automatic biochemical analyzers includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.

Abstract: The peak potential values of each cardioelectric wave components detected from the body surface are uniquely presented as a few iso-potential and isochronous contour maps by the electrocardiac peak mapping (EPM) method and apparatus described. The change in the size and the contour of the relevant EPM maps provides a simple, non-invasive, yet sensitive means for clinical diagnosis of at least the following heart diseases:1) the locations and sizes of myocardial infarction (hereafter, MI),2) primary and second cardiomyopathies,3) locations and sizes of "non-Q-wave MI", which can not be diagnosed by conventional electrocardiography, and4) various intracardiac conduction blocks and Wolff-Parkinson-White syndrome,5) various repolarization abnormalities and their quantitative analysis.The EPM apparatus comprises an elastic Waistcoat with embodied special electrodes, signal preprocessors, a multiplexer, a main differential amplifier, and a general purpose computer with appropriate software.