50results about How to "No residual risk" patented technology

The invention discloses a paint for reducing enteromorpha fouling and an application method thereof. The paint matrix is ​​dimethylsiloxane, and the effective antifouling substance in the paint is luteolin with a mass fraction of 2.5%. The paint is applied to the nylon seedling ropes of laver culture rafts to reduce the fouling of Enteromorpha on the nylon ropes, thereby reducing the biomass of Enteromorpha entering the sea. The luteolin used in the present invention widely exists in various plants such as peanuts, celery, dandelions, green peppers, etc., and has the characteristics of large land reserves, easy extraction, mild nature, and not easy to cause secondary pollution. The invention can be applied to the pollution control of enteromorpha and the early prevention and control of green tide in laver breeding areas. The coating prepared by the invention can effectively reduce the fouling of the enteromorpha on the nylon rope, thereby reducing the biomass of the enteromorpha entering the sea, thereby alleviating the outbreak of the green tide in the Yellow Sea every year.

The present invention provides an absorbable semi-flowing cross-linked polypeptide biological surgical bleeding-stopping substance, which comprises a gelatin and a cross-linking agent, wherein a cross-linking agent is added to a gelatin solution to make high-reactivity amino acid side chains react with each other so as to form a cross-linking structure, and iron-calcium ions are added to increase the cross-linking degree so as to finally form the three-dimensional network cross-linked macromolecular polypeptide. According to the present invention, the absorbable semi-flowing cross-linked polypeptide biological surgical bleeding-stopping substance can be safely absorbed by human tissues, has characteristics of semi-fluidity, viscosity and adhesion, can promote the coagulation process of human body through physical and chemical principles, can rapidly stop bleeding, can treat surgical bleeding in the case of no damage on tissues so as to improve the convenience and the flexibility of surgical hemostasis and improve the safety and the effectiveness of surgical hemostasis, and can achieve the satisfactory bleeding-stopping effect in the cases of multi-point bleeding, large-area errhysis, bleeding in the narrow lacuna, hidden bleeding point or difficultly distinguished bleeding point, and bleeding difficultly operated and controlled by the existing bleeding-stopping methods.

The invention discloses a preparation method of high-efficiency cyhalothrin nano-pesticide, belonging to the technical field of preparation of agricultural chemicals. The preparation method is characterized in that an amphiphilic copolymer is adopted and is self-assembled in an aqueous solution to form a nano-sized micelle with an obvious core-shell structure; the nano-pesticide is obtained by physical actions of an organic solvent and polyvinyl alcohol. The preparation method disclosed by the invention is simple and convenient; raw materials are easily obtained; a used solvent is water, so the pollution is small and the cost is low; the used amphiphilic copolymer has good environmental compatibility, biodegradation and no residual risks; in addition, a degraded product can be absorbed and utilized by crops; the nano-pesticide has the advantages of relatively small and relatively uniform particle size, relatively good permeability and certain slow release effect; the lasting period of pyrethroid pesticides is prolonged, and the using dose of the pesticide is reduced.