37 results about "DEPOSIT CALCIUM" patented technology

A biaxially textured crystalline layer formed on a substrate using ion beam assisted deposition (IBAD) is provided. The biaxially textured crystalline layer includes an oriented CaF2 crystalline layer having crystalline grains oriented in both in-plane and out-of-plane directions, where the out-of-plane orientation is a (111) out-of-plane orientation. The oriented CaF2 crystalline layer is disposed for growth of a subsequent epitaxial layer and the CaF2 crystalline layer is an IBAD CaF2 layer. The biaxially textured CaF2 layer can be used in a photovoltaic cell, an electronic or optoelectronic device, an integrated circuit, an optical sensor, or a magnetic device.

The invention relates to a method for preparing a paper-making coating-grade precipitated calcium carbonate pigment, which is especially suitable for use as a coating pigment for high-grade coated paper, white cardboard, and light-weight (low-weight) coated paper, and belongs to the technical field of refining chemical raw materials . The present invention uses precipitated calcium carbonate dry powder as raw material, adds precipitated calcium carbonate to water in batches under high-speed dispersion conditions to adjust slurry, and obtains precipitated calcium carbonate with a solid content between 65% and 75% after multi-channel grinding. Papermaking coating grade precipitated calcium carbonate pigment with a ratio greater than 90% and a viscosity less than 300 centipoise (cps). The invention can effectively solve the agglomeration problem in the dispersion process of the precipitated calcium carbonate, improve the viscosity index of the precipitated calcium carbonate, and obtain high-concentration pigment for doctor blade coating.

The invention relates to the fields of electrochemistry and materials and discloses a method for preparing a carbonate hydroxyapatite / carbon nano tube composite coating, which mainly comprises the following two steps: (1) depositing calcium carbonate powder or calcium carbonate-containing powder and carbon nano tubes on the surface of a metal matrix to obtain a calcium carbonate powder / carbon nano tube coating by electrophoretic deposition; and (2) treating the calcium carbonate powder / carbon nano tube coating with a phosphoric acid buffer solution, and converting the treated solution into the carbonate hydroxyapatite / carbon nano tube composite coating. The method is executed at normal temperature and pressure, has the advantages of simple process, low equipment investment and the like, and is suitable for preparing implants of various complicated shapes. The obtained composite coating has the fine bioactivity of the carbonate hydroxyapatite, and also can give full play to the favorable mechanical properties of the carbon nano tubes and the metal matrix.

To provide an immortalized capillary pericyte line which maintains the original function / property of the cell line-deriving tissue, its establishment method, and the screening method for useful substance using the immortalized capillary pericyte line. Cerebral tissue of a transgenic rat carrying the large T antigen gene of SV40 thermo-sensitive mutant line tsA58 is homogenized and the resultant brain capillaries are treated with protease, thus obtained brain capillary cells are subcultured to establish an immortalized cell that expresses SV40 thermo-sensitive large T antigen, PDGF receptor β, and Angiopoietin-1. In addition, the immortalized vascular pericyte line has ability to deposit calcium on matrix by dense culture.

The invention discloses a magnesium-based tissue engineering material antibacterial coating and a preparation method thereof. The coating includes a bioactive calcium-phosphorus coating and a nano-metal compound antibacterial coating on the surface of the porous magnesium and magnesium alloy materials from the inside to the outside; during preparation, the porous magnesium-based material is placed in a solution containing calcium phosphate salt Soaking, chemically depositing a bioactive calcium-phosphorus coating; then placing the porous magnesium-based material deposited on the calcium-phosphorus layer in a constant temperature and dynamic immersion reaction in a metal compound solution, and preparing the above-mentioned nanometer metal compound antibacterial coating on the surface of the outer layer of calcium-phosphorus layer, namely have to. The coating prepared by the invention not only significantly reduces the corrosion rate of the matrix porous magnesium and magnesium alloy, but also improves the surface biological activity of the matrix, can promote osteogenesis and angiogenesis, and has high-efficiency broad-spectrum antibacterial effect. The operation process is simple and easy, the prepared coating has strong binding force with the substrate, and the surface density and particle size of the nanometer metal compound carried can be adjusted.

When fly ash is added to a cement kiln to materialize it after being desalinated by washing, scale is prevented from growing in a dissolution reaction apparatus depositing calcium-containing compounds dissolved in slurry, and the fly ash is effectively used as a cement material. A dissolution reaction apparatus according to the invention comprises: a dissolution tub 3 for dissolving powder material, a wet dust collector 5 for collecting powder material and mist while reacting slurry S in the dissolution tub 3 with gas G and returning the collected powder material and mist to the dissolution tub 3. A second wet dust collector 7 can be provided for collecting powder material and the like accompanying to the gas G discharged from the wet dust collector 5, and both the wet dust collectors 5, 7 can be vertical type and mounted independently with each other on the dissolution tub 3. The slurry S and the gas G can react with each other with parallel flow by feeding the slurry S and the gas G to an upper portion of the first wet dust collector 5, or the powder material and the like accompanying to the gas G may be collected with counter flow by feeding the gas G discharged from the dissolution tub 3 to a lower portion of the second wet dust collector 7.

The invention relates to a construction method for high-pressure spraying microbial bacterial liquid to deposit calcium carbonate to treat landslides. The plan includes the following construction steps: cleaning the slope surface of a potential landslide body, and arranging an operation platform; Drilling to form a plurality of liquid injection holes; inserting a steel flower tube closed at the bottom into each liquid injection hole; injecting microbial bacterial liquid into each steel flower tube; elevating the steel flower tube according to the set speed until it is lifted to a soft sliding Stay at the surface for a set time and then continue to lift the steel flower tube; stop the microbial injection when the bottom elevation of the steel flower tube exceeds the weak sliding surface elevation by at least 1m; pull out each of the steel flower tubes, wait for the bottom of each injection hole. After the microbial deposition of calcium carbonate is completed, microbial bacterial liquid injection and soil filling are performed in each liquid injection hole again. The invention has the advantages of reducing the damage to the mountain and the ecological environment, and has the advantages of fast construction speed and low construction cost.