48results about How to "Good environmental tolerance" patented technology

The invention discloses a vibrio alginolyticus bacteriophage and application thereof to prevention of sea cucumber disease, belonging to the technical field of biology. The bacteriophage is collected in the China General Microbiological Culture Collection Center on March 11, 2014 and has a collection number of CGMCC No.8792 and a classification name of Vibrio alginolyticus bacteriophage; the vibrio alginolyticus bacteriophage is a short-tailed phage, has a head diameter being 50 nanometers and tail length being 15 nanometers, and has no shrinkage tail sheath and six short tail fibers. The bacteriophage is used for preventing infection and pollution caused by corresponding vibrio alginolyticus in the culturing process of sea cucumbers, and the potency is more than or equal to 10<5>PFU / mL. The bacteriophage has an inhibiting function on vibrio alginolyticus, and no vibrio alginolyticus-resistant strain is produced within 12 hours; the incubation period lasts for 28 minutes, the burse size is 79, and two orders of magnitude are lowered within 14 days in a seawater culturing environment.

Provided is a retrofocus type optical system including a lens or a layer made of a material satisfying the following conditions of the Abbe constant νd and partial dispersion ratios θgd and θgF,νd<30,θgd<−3.333×10−3·νd+1.40,θgF<−2.615−10−3·νd+0.67.In the case that this layer is disposed on the front side of the aperture stop, the layer is designed to have a positive refractive power, and in the case that the layer is disposed on the rear side of the aperture stop, the layer is designed to have a negative refractive index.

A process for preparing the zirconium oxide ceramic film on the surface of functional self-assembled organic silane film includes such steps as preparing said self-assembled organic silane film containing S on the surface of monosilicon or glass chip, oxidizing the S-contained radicals on the surface of film to become sulfo radicals, and preparing zirconium oxide ceramic film in the aqueous solution by chemical adsorption. Its advantages are low cost, low poison, high density, and uniformly, large area, and high antiwear nature.

The present invention relates to a pneumatic solution agitator, comprising a reciprocating piston assembly and a mixing barrel, the mixing barrel is provided with an air guide chamber, a stirring chamber and an air pressure chamber; the reciprocating piston assembly includes a reciprocating assembly and a piston mechanism, the piston The gas in the mechanism shrinks and expands under the drive of the reciprocating component. The piston mechanism includes an exhaust port that doubles as the suction port. The exhaust port communicates with the air guide chamber; It is a semi-closed cavity, the opening end of the mixing chamber communicates with the air guide chamber through a one-way valve A, and the conduction direction of the one-way valve A is from the stirring chamber to the air guide chamber; the opening end of the air pressure chamber passes through the one-way valve B communicates with the air guide chamber, and the conduction direction of the one-way valve B is from the air guide chamber to the air pressure chamber; the outer wall of the mixing chamber and the inner wall of the air pressure chamber are connected through a number of release holes; the whole stirring mechanism is fully sealed, Compared with the shaft-type driving mechanism, the pressure-bearing performance is better, and the piston size is increased to reduce noise.

The invention relates to an array plate type solar heat collecting assembly. The assembly comprises a plurality of heat collecting plates, wherein each heat collecting plate comprises a heat collecting plate body, and a heat collecting chamber is arranged in each heat collecting plate body; each heat collecting plate body is a regular polygon and a set of connecting ports are arranged at each sideof each heat collecting plate body; each connecting port includes a connecting joint protruding towards the outside of the corresponding heat collecting chamber and a connecting slot; each connectingjoint is provided with a connecting cavity A which communicates with the corresponding heat collecting chamber; each connecting slot is provided with a connecting cavity B communicating with the corresponding heat collecting chamber, and the shape of the connecting cavities B corresponds to that of the connecting joints; and the adjacent heat collecting plates are fixedly connected with each other through inserted connection of the connecting joints and the connecting joints, and waterway connectivity is achieved. Non-pipe-connection between the heat collecting plates is achieved through inserted connection of the heat collecting plates, the area utilization is high, and no heat loss of the pipeline is generated; in addition, the assembly is higher in structural integrity and can be usedto replace a roof or a floor.

The invention discloses a lipoic acid liquid preparation and a preparation method thereof. The preparation comprises lipoic acid as a main ingredient, a polymerization inhibitor lysine, and a pH regulator. The composition of the preparation is simple, but it can significantly improve the stability of the liquid medicine under high-temperature sterilization and strong light irradiation, and in particular can greatly reduce the generation of lipoic acid dimer impurities. By adding the auxiliary stabilizer D-sorbitol, the effect of stabilizing the quality of the medicinal solution is further enhanced. The invention strictly controls the preparation process of the injection, fills the liquid with nitrogen for protection in the whole process of liquid preparation, dissolution and potting, timely monitors the residual oxygen of the liquid, effectively controls the degradation of lipoic acid in the aqueous solution, and ensures the safety of clinical use. Safe and effective.

The invention discloses an oil-removing bacterial agent in the technical field of oily sludge treatment, a preparation method and application of its composite dry powder bacterial agent, and the oil-removing bacterial agent contains two kinds of bacterial liquids of GWN-1 strain and GWN-2 strain The mixed solution, the number of viable bacteria in each bacterial solution is 10 9 ~10 11 each / ml; the two kinds of bacterial liquids are respectively GWN‑1 bacterial liquid by volume ratio: GWN‑2 bacterial liquid=1: (1.9~2.1) to mix; Press filtration and drying obtains a dry powder, which is used in the treatment of oily sludge from oilfields. The composite dry powder bacterial agent is suitable for direct biodegradation of oily sludge in oilfields with high water content, high oil content and high salinity, has good environmental tolerance, and the preparation method has the characteristics of simple operation and low cost, and is suitable for large-scale production and application.