38results about How to "Activity will not decrease" patented technology

Disclosed are: a white turbid dispersion liquid of a chemical for rubbers, which contains the chemical for rubbers at a concentration of not less than 1% by mass; a method for producing the white turbid dispersion liquid of a chemical for rubbers, wherein a solution, which is obtained by dissolving a chemical for rubbers into a good solvent for the chemical for rubbers, is mixed with a poor solvent for the chemical for rubbers; and a wet master batch containing a chemical for rubbers, which is obtained by solidifying a liquid mixture of the white turbid dispersion liquid of a chemical for rubbers and a rubber latex with or without a filler slurry. The dispersion liquid of a chemical for rubbers is used for the purpose of having a rubber wet master batch contain various chemicals for rubbers with high dispersibility, and the method enables the production of the dispersion liquid of a chemical for rubbers. The rubber wet master batch provides a rubber composition that has improved thermal aging resistance, reinforcing properties, elastic modulus, wear resistance and the like.

In a method of producing pyromellitic acid by liquid-phase oxidizing 2,4,5-trimethylbenzaldehyde in a water solvent with molecular oxygen, a recrystallization mother liquor separated in a recrystallization step is recycled to the oxidation step after a part of the water solvent is removed. With this method, the loss of pyromellitic acid and the oxidation catalyst can be minimized and the burden of discharging the waste water is reduced without lowering the efficiency of the liquid-phase oxidation reaction.

The invention discloses novel tea polyphenol induction salt-tolerant application, seed soaking solution and a salt-tolerant method for wheat seedlings. The wheat seedlings are irrigated with the seed soaking solution in salination environments when the wheat seedlings grow and the heights of the wheat seedlings reach 10 cm. The salt-tolerant method includes 1), disinfecting wheat seeds; 2), repeatedly thoroughly washing the disinfected wheat seeds in distilled water; 3), accelerating germination of the wheat seeds; 4), irrigating the wheat seedlings with the seed soaking solution for continuous three days when the wheat seedlings grow and the heights of the wheat seedlings reach 10 cm. The seed soaking solution contains tea polyphenol, and the content of the tea polyphenol is 10-40 micrograms / mL. The novel tea polyphenol induction salt-tolerant application, the seed soaking solution and the salt-tolerant method have the advantages that degradation of chlorophyll in leaves of the wheat seedlings can be obviously deferred under salt-stress conditions, the activity of CAT (catalase) and POD (peroxidase) can be improved, the proline content can be increased, accumulation of membrane lipid peroxidation products MDA can be reduced, and the salt-stress resistance of the wheat seedlings can be ultimately improved.

The present invention relates to the field of membrane proteomics research, specifically to a treatment method of a sample for membrane protein analysis identification. According to the treatment method of the present invention, SL is adopted as a detergent, and is provided for membrane protein analysis identification, wherein SL molecules have a linear hydrophobic hydrocarbon chain tail similar to SDS molecules, and a carboxyl head similar to SDC molecules, and experiment results show that SL provides significant advantages in identifications of membrane proteins, especially in identifications of integral membrane proteins having high hydrophobicity and / or multiple transmembrane regions compared with ALS and SDC.

The present invention provides a metal-ligand complex, a catalyst composition comprising the same for ethylene-based polymerization, and a method for preparing an ethylene-based polymer by using same.The metal-ligand complex of the present invention in which a particular functional group is introduced at a particular location has high solubility and catalytic activity, and therefore, the catalystcomposition comprises the complex for ethylene-based polymerization can produce an ethylene-based polymer having excellent physical properties.

The invention relates to a novel biological enzyme sensor capable of being implanted into a human body and a production method thereof. The surface of a substrate is cleaned via polishing, degreasing, activation and other physical and chemical processes, and the metal substrate is then coated with a layer of platinum black, platinum or gold via electroplating or sputtering. The surface of an electrode is modified with a layer of enzyme, the biological enzyme is cured through polymer embedding or cross-linking, one or more biocompatible polymer material(s) is / are used as a carrier, and the polymer material(s) as the carrier at least comprise(s) a polyamino, polyhydroxy or polythiol group. Reaction of polyisocyanate with polydimethylsiloxane and polyether polyol or polyester polyol, a small number of chain extenders are added, polyurethane prepolymer is produced, cross-linking curing of polyurethane prepolymer and polymer material(s) in the biological enzyme layer is carried out, the adhesion of the film can be improved, and the bio-sensing layer cannot fall off in long-time testing of an animal body or a human body. The method is simple, and the produced biological enzyme sensor has excellent mechanical flexibility, biocompatibility, adhesion and resistance to protein adsorption.

The invention discloses a preparation method of a transfer factor. The preparation method of the transfer factor is characterized by comprising the steps: pre-processing, homogenation, repeated freeze thawing, centrifugation, ethanol precipitation, primary ultra-filtration, virus inactivation and secondary ultra-filtration. The invention also discloses a preparation method of a transfer factor injection. According to an ethanol precipitation method and a virus deactivation method which are not adopted in a traditional process, various impurity proteins are removed, and various animal source viruses are effectively removed, so that the security of products can be effectively guaranteed, sensitive sources are reduced, and the security is improved; meanwhile, by adopting an ethanol precipitation method, the impurity proteins are removed, so that the ultra-filtration load of a subsequent ultrafiltration membrane can be reduced, and the service life of the ultrafiltration membrane is prolonged.

The invention discloses a high-efficiency environmental-friendly catalyst carrier, which comprises the raw materials of powdery silicon carbide with the content of 65-80% by weight and the fineness of 50-100 meshes, as well as synthetic organic clay with the content of 20-35% by weight, and is prepared by the steps of: uniformly mixing the two raw materials of the powdery silicon carbide and the synthetic organic clay, respectively adding and mixing 2-7% by weight of adhesive, 5-10% by weight of aids, and 3-5% by weight of lubricant by the total weight of the two raw materials as well as 8-15% of pore forming agent by volume ratio, adding a proper amount of distilled water after mixing and kneading into pastes, discharging, staling, extruding and molding into a tubular blank, airing, chopping into segments, drying and molding, delivering the molded blank into a kiln for heating, preserving the heat at 1250-1350DEG C, firing and cooling to obtain the finished product. The invention cantake full advantages of large amount of waste green silicon carbide abrasive tools and high-temperature kilns, thereby saving mineral resources, facilitating to environmental protection and ecological balance, reducing the production cost of the catalyst carrier, protecting the catalyst from burning out, prolonging the service life of the catalyst and improving the working efficiency of reactors,and moreover, the catalyst carrier has the advantages of excellent regeneration conditions and favorable use performance.