Method for preparing nano structure with biological activity on surface of pure titanium

The invention discloses a method for preparing a nano structure with biological activity on surface of pure titanium. The method for preparing the nano structure with the biological activity on the surface of pure titanium comprises the following steps: blasting sand, carrying out acid etching on the surface of the pure titanium, soaking in a preservation solution and carrying out ultraviolet irradiation. The prepared sand blasted and acid etched surface is soaked and preserved, compact nanoscale particles are automatically generated on the basis of the original micron-sized surface structure, then ultraviolet irradiation treatment is carried out, and the prepared sand blasted and acid etched surface has better biological activity and can serve as a bone nail and dental implant in orthopaedic department and stomatological department.

Saccharopolyspora spinosa resistant to high-concentration SAM and application of saccharopolyspora spinosa

The invention relates to the field of microorganisms, in particular to saccharopolyspora spinosa resistant to high-concentration SAM and application of the saccharopolyspora spinosa. The saccharopolyspora spinosa is named as YJY22-16, the strain is preserved in the China General Microbiological Culture Collection Center on June 16, 2022, and the preservation number of the saccharopolyspora spinosa is CGMCC No. 25093. The saccharopolyspora spinosa disclosed by the invention can survive in a culture medium of high-concentration S-adenosylmethionine and is extremely high in proliferation property, and the synthesis of spinosad is promoted by using the S-adenosylmethionine as a precursor, so that the yield of the spinosad is increased. The strain is stable in proliferation and beneficial to industrial utilization.

Adjustable spanner

This invention relates to an adjustable spanner, which comprises a handle, a spanner body, a fixed opening tongue, a mobile opening tongue, a turbine knob and a fixing pin. The handle, the fixed opening tongue and the spanner body are integrated; the mobile opening tongue is fixed with a mobile gear rod; the mobile gear rod is arranged in a worm hole of the spanner body; the mobile opening tongue and the fixed opening tongue are arranged on the spanner body by the mobile gear rod; the turbine knob is arranged in a knob groove of the spanner body through the fixing pin; and the helical teeth of the turbine knob are meshed with the teeth of the mobile gear rod. The adjustable spanner is characterized in that: a hammer integrated with the fixing opening tongue is arranged on the outer part of the fixing opening tongue of the spanner body; and a groove is reserved at a joint between the root part of the hammer and the mobile gear rod. A straight or crossed groove screwdriver can be arranged ...

Automatic dosing device for sewage treatment

The invention discloses an automatic dosing device for sewage treatment, which consists of a medicine dissolving box, a medicinal powder dosing device, a medicine dissolving mixer, a mixer driving motor, a water inlet pipe, a medicine outlet pipe and a dosing pump. A pre-infiltrating device is arranged between the medicinal powder dosing device and the medicine dissolving box; the medicine dissolving box are separated by two overflow weirs to form a dissolving tank, a curing tank and a storing tank which are adjacent in turn; and a homogenizing stirrer is arranged in the curing tank. The pre-infiltrating device is arranged in the automatic dosing device for sewage treatment and is used for soaking dry flocculant powder, medicine solution flows into the dissolving tank by means of gravity and is stirred and mixed, the curing tank and the storing tank are arranged, low-speed stirring is carried out in the curing tank, and medicine solution meets the requirements of homogenization, curing ...

Method for preparing magnetic nano material immobilized feruloyl esterase

The invention discloses a method for preparing magnetic nano material immobilized feruloyl esterase. The method comprises the following steps: preparing a Fe2O3 immobilized carrier magnetic nano material; mixing the immobilized carrier magnetic nano material with a feruloyl esterase solution; and preparing the immobilized feruloyl esterase by using magnetic equipment. The method is simple in preparation process, gentle in reaction condition and high in repeated regeneration utilization rate, the equivalent free enzyme activity of the prepared immobilized feruloyl esterase is kept at 90% or above, the thermal stability is improved, and the enzyme activity of the immobilized feruloyl esterase can be kept at 80% or above for 120 hours at the constant temperature of 40 DEG C.

Sand-water separator

The present invention provides a sand-water separator, which comprises an inflow pipe, a drain-pipe, a water tank, a shaftless spiral, a U-shaped groove body and a driving device. The shaftless spiral is arranged in the U-shaped groove body. The upper end of the spiral is connected with the driving device. The lower end of the spiral is arranged in the water tank. A U-shaped lining is arranged between the shaftless spiral and the U-shaped groove body in the axial direction of the U-shaped groove body, and the lining is fixed on the U-shaped groove body. Because a U-shaped lining is arranged between the shaftless spiral and the U-shaped groove body in the invention, three-point contact structure between the shaftless spiral and the groove body is prevented, the vibration and impact during the running process can be reduced greatly, and the abrasion and noise are reduced. Therefore the service life of the components is prolonged. The fit clearance between the U-shaped lining and the shaftless ...

Method of preparing TiSrO3 coating on surface of titanium implant

The invention discloses a method of preparing TiSrO3 coating on the surface of a titanium implant. The method comprises the following steps: after carrying out sand blasting and double acid treatment on a pure titanium implant, putting the titanium implant in a hydrothermal solution containing strontium ions for hydrothermal treatment and surface modification; and forming a nanoscale protruding structure with multiple holes on the surface of the implant, wherein the protruding layer on the surface is a strontium titanate crystal structure and an anatase crystal structure and has the effects of promoting osteoblast and osteogenic differentiation of stem cells. Meanwhile, the coating has good wettability and has a wide application value.

A method for assembling RGD on the surface of porous pure titanium dental implant

The invention discloses an assembling method of RGD on the porous pure-titanium tooth plant surface, which comprises the following steps: adopting layer-to-layer electrostatic self-assembling technique to make the surface load positive charge through PEI; immersing plant into RGD solution; using attractive elementary of foreign charge to fix RGD on the PEI surface; crossing PEI and RGD through glutaraldehyde; immersing the plant into RGD solution to seal non-connected aldehydo; increasing RGD quantity; repeating these steps to obtain the product.

Method for making simvastatin drug-containing hydroxyapatite coating on surface of pure titanium

The invention discloses a method for depositing a simvastatin drug-containing hydroxyapatite coating on the surface of pure titanium by utilizing an electrochemical deposition process. The method comprises the following steps: polishing the surface of a pure titanium implant, sand-blasting, acid-etching, and depositing by utilizing an electrochemical deposition station, a simple apparatus and cheap materials to make the simvastatin drug-containing hydroxyapatite coating on the surface of the implant. The method has the advantages of simple preparation process, simple apparatus, low making cost, high making efficiency and the like, and the obtained coating has good biocompatibility and osteogenic cell proliferation differentiation promotion ability. A platform for making the drug-containing coating on the surface of pure titanium is established.

Production of porous structure with biological activity on surface of pure-titanium tooth implantation

Halophilic microbial agent

The invention relates to a halophilic microbial agent. The halophilic microbial agent comprises bacillus sonorata with the base sequence specifically shown as SEQ ID NO.1, halomonas Yellow River with the base sequence specifically shown as SEQ ID NO.2, bacillus velezensis with the base sequence specifically shown as SEQ ID NO.3 and staphylococcus sciuri with the base sequence specifically shown as SEQ ID NO.4. The halophilic microbial agent is prepared from bacillus sonorata with the base sequence specifically shown as SEQ ID NO.3, halomonas Yellow River with the base sequence specifically shown as SEQ ID NO.4, halomonas Yellow River with the base sequence specifically shown as SEQ ID NO.4 and bacillus velezensis with the base sequence specifically shown as SEQ ID NO.5. All the microbial agents are preserved in China General Microbiological Culture Collection Center. The halophilic microbial agent has strong colonization ability in wastewater, can reduce the salt content in sewage while ...