60results about How to "No effect on activity" patented technology

The invention relates to a vanadium-titanium oxide catalyst which can resist alkaline metal and alkaline earth metal poisoning. The catalyst is characterized in that the vanadium-titanium oxide catalyst is doped with an element Ce. The catalyst has fine resistance to alkaline metal poisoning, and above all, the doped cerium component has no influence on the activity of the SCR (selective catalytic reduction) catalyst while improving the resistance of the V2O5 / (MoO3)x(WO3)1-x-TiO2 catalyst to alkaline metal poisoning. The preparation method of the catalyst is simple and easy to implement and has very excellent N2 generation selectivity; and meanwhile, the Ce is a non-poisonous component and can not do harm to human health and ecological environment.

The invention discloses a flue gas denitration catalyst. The catalyst comprises a carrier and a catalytic activity component, wherein the catalytic activity component is manganese, cobalt and cerium composite oxide, wherein the molar ratio of the manganese element to the cobalt element to the cerium element is 1:0.1-1:0.1-1. A preparation method of the flue gas denitration catalyst comprises the following steps of: (1) taking a soluble manganese salt, a soluble cobalt salt and a soluble cerium salt, wherein the molar ratio of the manganese element to the cobalt element to the cerium element is 1:0.1-1:0.1-1, dissolving the salts in deionized water, and adding ammonia water to adjust the pH value to between 5 and 7; (2) soaking a carrier in aqueous solution of citric acid, diluted hydrochloric acid or diluted nitric acid for 24 to 48 hours, drying the carrier, soaking the carrier in the solution of the step (1), standing the carrier for 24 hours and drying the carrier; and (3) roastingthe prepared sample in step (2) in air, and cooling the sample. The flue gas denitration catalyst has the advantages of simple preparation method, high poisoning resistance, no secondary pollution toenvironment, wide activity temperature window, low activity starting temperature and the like.

The invention relates to the field of in-vitro diagnosis biochemical reagents, particularly a high-stability creatine kinase detection kit. The high-stability creatine kinase detection kit is composed of a reagent R1 and a reagent R2 which are mutually independent, wherein the reagent R1 is composed of a biological buffer solution, an enzyme protective agent, a reaction substrate, a complex, a surfactant, a preservative and an activator; the reagent R2 is composed of a biological buffer solution, a reaction substrate and a preservative; and the volume ratio of the reagent R1 to the reagent R2 is 4:1. After adding the enzyme protective agent into the detection kit, the enzyme protective agent can be adopted to protect the enzyme on the premise of enhancing the stability of the reagent. After adding the enzyme protective agent, the enzyme can keep stable in the water solution for a long time, and the activity of the enzyme is not influenced.

The invention relates to a method for controlling prekallikrein activator in a human serum albumin product. The method comprises the following steps of in the process of separating and preparing human serum albumin through a low-temperature alcohol method: 1) adding activated kieselguhr subjected to sodium citrate pretreatment in a step of separating the component IV from the supernatant of components I+II+III, and adsorbing a blood coagulation factor XII so as to reduce the content of the blood coagulation factor XII; and 2) allowing the component V subjected to ultrafiltration and dialysis and purification to pass through a grease-removing filter element with positive charges, and adsorbing to remove the residual activation factor XIIa fragment in the human serum albumin solution. According to the two steps, the content of the prekallikrein activator in the human serum albumin product is reduced, the protein molecule activity, various physical and chemical indicators and protein yield are not influenced, and a reliable guarantee is provided for safe medication of a user.

The invention relates to a production method of a hybrogen to water (liquid) hybrogen isotope exchange catalyst, which is characterized in that: firstly, make polyvinyl alcohol aqueous solution as compound aqueous phase and toluol and other organic solvent as pore agent, under the catalyzing of ABIN initiator to realize mass polymerization of divinylbenzene to produce polymer porous resin ball, then add the polymer porous resin ball into chloroplatinic acid ethanol solution to soak according to certain proportion, after drying, restoring and cooling to produce lyophobic catalyst. The invention is characterized in that: the technics has good repeatability, high catalyst activity, strong anti-Beta irradiance, and wide application range, which is not only suitable for extracting pure tritium in light water containing tritium of light water reactor, but also suitable for extracting pure tritium in heavy water containing tritium of heavy water reactor, also used for extracting pure tritium in liquid radioactivity outflow (nuclear waste) of nuclear power reactor, and can be used to produce heavy water by the way of hybrogen to water (liquid) dual temperature exchanging method.

The invention discloses a circulating tumor cell detection method. The circulating tumor cell detection method is characterized in that highly heterogeneous circulating tumor cells are accurately marked through glucose metabolism engineering independent of tumor cell types, the marked circulating tumor cells are subjected to lossless capture through a biological orthogonal reaction, and the captured circulating tumor cells are subjected to nondestructive release through reversible reaction, so that accurate and nondestructive detection of the circulating tumor cells is realized.

The invention relates to a self-stabilizing cervical interbody fusion cage and a manufacturing die and method thereof. The self-stabilizing cervical interbody fusion cage comprises a fusion cage body made of mineralized glue and an anterior cervical approach fixing plate made of medical degradable polymer materials, the fusion cage body is in a wedge shape, the front portion of the fusion cage body is high, the rear portion of the fusion cage body is low, the anterior cervical approach fixing plate is located at the front end of the fusion cage body and is integrally formed with the fusion cage body, and the upper end and the lower end of the anterior cervical approach fixing plate are respectively provided with a fixing hole used for fixation of the cervical vertebra. The anterior cervical approach fixing plate and the fusion cage body are integrally formed so that the whole self-stabilizing cervical interbody fusion cage can be fixed to the upper cervical vertebra body and the lower cervical vertebra body and can be prevented from slipping off forwards or sliding backwards, and accordingly the fusion cage can be prevented from pressing nervous centralis; the fusion cage body made of the mineralized glue can be degraded and absorbed and can guide generation of new bones, the anterior cervical approach fixing plate made of the medical degradable polymer materials can be automatically degraded after an operation, and the trouble that another operation needs to be carry out to take out the fusion cage body is avoided.

The invention relates to a homogeneous immunodetection kit for detecting a target anti-Carp antibody and application of the homogeneous immunodetection kit. The detection kit comprises a component a, a component b and a component c, wherein the component a comprises an antigen combined with a receptor; a component b, which comprises a second anti-Carp antibody; the second anti-Carp antibody is a biotinylated rabbit anti-carbamoylated protein antibody, and the second anti-Carp antibody is a rabbit anti-carbamoylated protein antibody; the second anti-Carp antibody is combined with biotin; the component c comprises a donor capable of generating singlet oxygen in an excited state; the donor is combined with streptavidin. The kit adopts a one-step competition method reaction mode, and the reaction mode can specifically detect anti-Carp Ab such as IgG, IgA, IgM and the like, so that a washing process in a traditional indirect method is omitted, and a one-step method is formed to complete the whole reaction. Compared with a traditional indirect method, the method is time-saving, free of cleaning and simple and convenient to operate.

The invention discloses a method for extracting an antibody in serum by using an aqueous two-phase system. The method is a novel method for extracting the antibody in serum and is used for overcoming defects of low yield, high impurity content, complex preparation process, low activity and the like existing in the traditional method for extracting the antibody in serum. Sodium acetate is used as a salt in a brine phase. The yield of antibodies is increased, and the basis is provided for the application of sodium acetate to industrial production in future. Extraction equipment is simple in requirement and can be operated at room temperature; the extracted antibodies are relatively high in purity, and the activities of the antibodies are not influenced; the yield is greatly increased; the extraction time is greatly shortened; the method can be used for expanded production. The yield is not changed after expanded production.