59results about How to "Radioactive" patented technology

The invention relates to a bio-degradable and bio-absorbable macromolecule superfine fiber film with a radioactive nuclide mark and a method for making the same as well as medical use. The invention comprises the bio-degradable and bio-absorbable macromolecule superfine fiber film material or a composite superfine fiber film material with physically embedding radioactive nuclide mark, or the bio-degradable and bio-absorbable macromolecule superfine fiber film material or the composite superfine fiber film material with chelate radioactive nuclide mark having a bi-functional group coupling agent with surface chemical modification. The film material is a non-woven material consisting of fibers with diameters ranging from scores of nanometers to thousands of nanometers which is made through an electrostatic spinning process, and the radioactive nuclide is compounded inside the fibers or on the surfaces of the fibers by means of physics and chemic. The fiber film material with the radioactive nuclide mark is covered at a tumour part or a lesion tissue part after resection, thereby effectively killing the residual tumour cells, and playing roles in stanching, healing wound and preventing adhesion and so on.

The present invention belongs to the field of polymer material synthesis, relates to aqueous polyurethane acrylate emulsion modification, and especially to an aqueous fluorine-containing acrylate modified polyurethane coating, a preparation method and an application thereof. The preparation method comprises: dissolving polyether polyol in an N-methyl pyrrolidone solution of dimethylol propionic acid; adding diisocyanate in a dropwise manner; adopting dibutyltin dilaurate as a catalyst, and adding hydroxyethyl methacrylate to carry out end capping; adding triethylamine to form a salt, then adding deionized water to prepare an aqueous polyurethane acrylate prepolymer emulsion; and finally adding hexafluorobutyl acrylate and azodiisobutyronitrile to prepare the aqueous fluorine-containing acrylate modified polyurethane coating. The synthesized emulsion of the present invention has the following advantages that: dispersion is uniform; stability is good; water resistance and mechanical property of the cured film are substantially improved; elasticity and mechanical property of polyurethane are provided; ultraviolet resistance, nuclear radiation resistance, flexibility, excellent surface properties, water resistance and corrosion resistance of the fluorine-containing material are provided; and the coating can be adopted as coatings for building and furniture.

The invention relates to a high-specific surface area nanometer mesoporous silicon carbide hollow ball and a preparation method thereof. The preparation method comprises dropwisely adding different amounts of silica precursor tetraethoxysilane into water-anhydrous ethanol mixed solutions with different ratios so that the silica precursor tetraethoxysilane is hydrolyzed into silica solid nanospheres with different diameters, dispersing the silica solid nanospheres in distilled water with different volumes, carrying out thermal insulation for a certain time to obtain nanometer mesoporous silicon carbide hollow balls with different diameters are obtained, coating the inner and outer shells of the nanometer mesoporous silicon carbide hollow ball with an organic matter layer so that the organic matter is insert into the shell walls, carrying out carbonization, mixing the reaction product, magnesium powder and a metal salt to obtain a uniform mixture, and carrying out thermal insulation in an inert atmosphere for some hours to obtain nanometer mesoporous silicon carbide hollow balls with uniform structures and adjustable sizes. The preparation method has a low reaction temperature and a low cost. The obtained hollow silicon carbide has the advantages of uniform structure, adjustable sizes, superhigh specific surface area of 648m<2> / g and excellent mesoporous structure.

The invention discloses a noctilucent artificial stone and a preparation method thereof, belonging to the field of building decoration material. The noctilucent artificial stone contains, by weight percent, 0%-75% of inorganic filling, 20%-84% of unsaturated polyester resin or methacrylic acid type resin, 0%-6% of color paste, 0.5%-1.5% of coupling agent, 0.3%-20% of noctilucent material, 0.5%-11% of thermally expandable microcapsule, 0.5%-3% of nano titanium dioxide, accelerant which is 0.3%-2% of the content of the unsaturated polyester resin or methacrylic acid type resin, and curing agent which is 0.5%-3% of the content of the unsaturated polyester resin or methacrylic acid type resin. The nano titanium dioxide added to the artificial stone enables the surface of the artificial stone to have the functions of decomposing oil stains, removing bad smell, sterilizing and self-cleaning. Since the noctilucent material can absorb light and give out light naturally, the artificial stone can give out soft light at night. The specific gravity of the thermally expandable microcapsule is ultra-low, so the density of the artificial stone product can be greatly reduced.

The invention relates to large-sized ceramic tiles imitating jade quality and a preparation method thereof. The invention is characterized in that the forming specification of the large-sized ceramic tiles is 1050mm*2060mm*3.0-7.0mm; fixed point fabric distribution technology is adopted on a bottom material layer to form a needed pattern, a fabric layer is arranged on the bottom material layer in the form of micro-power or common power, and the fabric layer is a semitransparent ceramic material which accounts for 80-100% of the total fabric layers, and the thickness of pressing ranges from 0.5 to 1.5mm. The semitransparent ceramic material comprises the following chemical components according to percentage by weight: 60-75% of SiO2, 10-20% of Al2O3, 1-4% of CaO, 0.3-3% of MgO, 5-12% of K2O+Na2O+Li2O, 0-3% of ZnO and 0-3% of P2O5. By adopting the technology of the invention, the effect similar to underglaze color can be achieved. The pattern has strong three-dimensional sense and high abrasive resistance, and improves the grade of the product.

The invention discloses a method for preparing surface mesoporous silica core-shell microspheres. The method comprises: selecting monodisperse non-porous silica microspheres with the particle size of 1 to 3 microns, dispersing quaternary ammonium salt B and quaternary ammonium salt A dispersing agents in ethanol water, dispersing the silica microspheres in water, adding a mixed surface active agent solution, regulating a pH value to be 7.5 to 10 by using ammonia water, adding tetraethoxysilane and / or tetramethoxysilane solution, washing, drying, calcining and removing a structure-directing agent, thereby obtaining the surface mesoporous silica core-shell microspheres. By utilizing the quaternary ammonium salt with two different carbon chain lengths as co-structure-directing agent, the core-shell microspheres with a relatively larger radioactive mesoporous structure are prepared; by regulating the proportion of two quaternary ammonium salt structure-directing agents, the mesoporous aperture is controllable in a range of 4 to 20 nm, the obtained radioactive mesoporous structure increases effective specific surface areas of the microspheres, and the application of the microspheres in adsorption, catalysis and separation analysis is improved.

The invention provides a tripoli composition which comprises the following components in percentage by weight: 30-60 percent of octadecanoic acid modified tripoli, 5-15 percent of nano tourmaline powder, 5-20 percent of nano zinc oxide, 3-15 percent of nano titanium dioxide and 10-40 percent of inorganic gel powder. The tripoli composition provided by the invention has decorative effect, favorable air permeability, wet regulation and noise resistance and favorable air purifying capability. Tests indicate that the tripoli composition provided by the invention has no harmful substances or radioactivity and has the 24h ammonia purifying efficiency of higher than 65 percent, 24h formaldehyde purifying efficiency of higher than 75 percent and the noise reducing coefficient of 0.04 or so.

The present invention discloses a fluorescent phycocyanin and a fluorescent phycaerythrin. The phycocyanin and the phycaerythrin have molecular structure connected to open-chained linear tetraphyrrolyl compound as carrier protein and chromophore via thioether bond, are extracted from algae and can emit strong fluorescence after being excitation of light with proper wavelength. The present invention also discloses serial uses of the phycocyanin and the phycaerythrin in fluorescent detection and immunological analysis, in preparing anticarcinogen medicine and food, in preparing medicine and food for resisting irradiation, strengthening immune, in preparing photon switch, and in preparing food and cosmetic additive.

The invention discloses a leak point detection method for an underground diaphragm wall in a soft soil area. The defects that construction is complex, measurement is difficult, and the accuracy degree of the measurement result is low are overcome, and meanwhile the specific positions of leak points are measured accurately. The hidden leak points of the underground diaphragm wall in the soft soil area can be accurately detected, and the method is simple and practicable, convenient to operate and short in construction period. In addition, by means of the method, the reinforcement effect can be achieved on soft soil, the water content of the soft soil can be remarkably reduced within a short time, the undrained shear strength of the soft soil is improved, the sensitivity of the soft soil is reduced, and the reinforcement effect of the soft soil is irreversible. A detection device for achieving the detection method comprises an observation well, a precipitation well, aluminum electrodes and a powering-on device. The observation well is located on the outer side of a foundation pit and used for observing changes of the underground water level on the outer side of the foundation pit. The precipitation well is located on the inner side of the foundation pit and used for observing the underground water level on the inner side of the foundation pit. The aluminum electrodes are electrodes needed for an electroosmosis method. The powering-on device is located on the ground and provides a positive power source and a negative power source for the aluminum electrodes.

The invention discloses a molecular resonance plate which can achieve resonance with the surrounding environment. The molecular resonance plate comprises tile type ceramic materials at a middle layer and negative charged ion generating materials coated around the tile type ceramic materials. The molecular resonance plate provided by the invention can activate the purified water, can release a large amount of negative ions, has the advantages of high temperature resistance, no toxicity, no harm and no radioactivity, and is beneficial to the human health.

The invention provides a storage structure and a forming method thereof, wherein the storage structure comprises a substrate, a plurality of channel structures formed on the substrate, and a plurality of grid structures matched with the channel structures mutually, wherein each channel structure comprises multiple single crystal semiconductor layers and multiple oxide layers, which are alternatively stacked on the direction vertical to the substrate, at least one oxide layer is a single crystal oxide layer, and each grid structure comprises a grid dielectric layer adjacent to the channel structures and a grid layer adjacent to the grid dielectric layer. The storage structure has the advantages of simple preparation process, low cost, high reading-writing speed and high storage density.

The invention discloses a material powder for activating negative ion energy in molecular resonance, comprising the following components in percentage by weight: 10-50 percent of carbon, 20-60 percent of ceramic, 5-25 percent of dolomite and 5-25 percent of calcium carbide. The components in the formula are stirred by a vacuum sand mixer into granules, then are placed in an anaerobic firing furnace and fired at the temperature of 1,100 to 1,250 DEG C for 8-12 hours to form a fixed shape. The material powder for activating negative ion energy in molecular resonance has various ecological health functions of activating and purifying water, dissolving out elements beneficial to the health, releasing negative ions and the like, and has the advantages of high temperature resistance, no toxicity, no harm and no radioactivity.

The invention relates to an X-ray dental film hand-held locater which comprises a handle, a front tooth clamping rack, an X-ray tooth sheet, a slide bar, a positioning frame and a rear tooth clamping rack, the handle is provided with a longitudinal rectangular through-hole on the front end, and a transverse square through-hole on the lateral surface, the clamping rack is provided with an integral front tooth supporting plate, the X-ray tooth sheet is inserted into the groove of the clamping rack.

The invention relates to a light burning-avoiding heat-insulating material and a preparation method thereof, and belongs to the field of heat-insulating materials for construction. The raw materials used in the method comprise the following compositions in mass percent: 40-50% of low-grade kieselguhr, 35-45% of a binding agent A, 5-10% of coal ash, 5-10% of a binding agent B, and 0.2-0.5% of a foaming agent. The manufacturing technology comprises the steps of raw material pre-treatment, material blending, molding and maintenance. According to the invention, the heat preservation material prepared by adopting the method has the characteristics of light weight, high strength, small heat conductivity coefficient, heat preservation, thermal insulation, excellent sound-proof performance, high temperature resistance, aging resistance, acid and alkali resistance, zero radioactivity, environmental protection, energy conservation and the like.

The invention discloses a comprehensive recovery method for uranium-containing low-grade polymetallic ores. The method comprises the following steps that the uranium-containing low-grade polymetallic ores are finely crushed and then is subjected to pre-tailing discarding by using a spiral chute, the spiral chute gravity concentrate is subjected to regrinding and then is subjected to graded shaking table gravity concentration, the betafite lost in a small particle grade is subjected to direct flotation recovery during gravity concentration, the shaking table gravity concentrate is subjected to processes of inhibiting uranium ore flotation, strong magnetic uranium removal and the like to obtain lead concentrate and iron concentrate with qualified radioactivity, and finally the betafite is enriched by a combined method of magnetic separation and flotation. According to the method, comprehensive recovery of various low-grade useful minerals in the uranium-containing low-grade polymetallic ores can be realized, the use amount of flotation reagents can be reduced, the grade of uranium and niobium in the betafite concentrate is greatly improved, and the technological process has the advantages of being environmentally friendly, high in resource recovery rate, low in production cost and the like.

The invention relates to an antistatic fireproof decorate plate, which is characterized in that: the formula comprises: inorganic stone powder at 20-40%; organic adhesive at 20-40%; conductive mica powder at 5-20%; conductive ceramic powder at 5-20%; strengthen fiber at 1-10%; special cement at 5-15%; lithium sulfate at 1-10%; and tertiary sodium phosphate at 1-10%, wherein the organic adhesive uses cement; the fireproof decorate plate has antistatic fireproof function, without accumulating ash, with better surface rigidity and anti impact property.

The invention discloses a concrete pavior brick facing material with water permeability. The concrete pavior brick facing material contains 42.5# cement, pigments and water. Compared with the existing materials, the concrete pavior brick facing material with water permeability, disclosed by the invention, has the advantage that a brick prepared from the concrete pavior brick facing material with water permeability is high in compressive strength, good in bending resistance and standard in geometric dimensions, is antiskid, has a water-permeable function and does not have radioactivity.

A uranium conversion material automatic feeding assembly with a temporary storage function comprises a plant; the uranium conversion material automatic feeding assembly further comprises a translation conveying device B, a translation conveying device C, a rotary lifting conveying device B, an auxiliary rod screwing device and a dust raising prevention capping device which are fixedly arranged on the upper layer of the plant; the uranium conversion material automatic feeding assembly further comprises a sealing tank kit which moves among the translation conveying device B, the rotary lifting conveying device B and the translation conveying device C back and forth; and the sealing tank kit comprises a positioning chassis, a sealing tank and a butt joint seat. The uranium conversion material automatic feeding assembly is applied to an automatic UO2 feeding system, unattended UO2 automatic continuous feeding operation can be achieved on the third building of the plant, after feeding is completed, automatic returning of all empty tank containers on the original path can be achieved, and necessary structural support is provided for achieving automatic UO2 feeding operation.

The invention discloses a sand aerated concrete block operation room which comprises installing keels and sand aerated concrete blocks built in the installing keels. Each installing keel comprises an installing bottom groove and a vertical framework welded on the installing bottom groove, wherein the top of the vertical framework is connected with an oblique framework, the oblique framework is connected with a top framework, a 10,000-grade ventilation device is arranged at the middle position of the top framework, a lamp strip is arranged on the puerperal side of the 10000-grade ventilation device, a crane tower extending to the inside of the operating room is further arranged on the top framework, an electric door and a dirt door are respectively arranged on the front side and the rear side of the operation room, and various cabinets, a power connector and a writing table are further arranged on the wall side inside the operating room. A building method comprises the steps of inserting, connecting and welding the installing keels, building the sand aerated concrete blocks around the installing keels, processing the wall inside of the operating room and arranging devices inside the operating room. The sand aerated concrete block operation room has the advantages of being economic, non-radioactive, anti-permeable, good in sound insulation effect, convenient to construct, good in heat preservation performance, high in strength and the like.

The invention discloses an efficient cement chromium removal grinding aid, and relates to the technical field of cement admixtures. The problem that the removal rate of hexavalent chromium is low is solved. The additive specifically comprises the following components in percentage by weight: 20% of water, 30% of alcohol amine compounds, 49% of yield increasing powder, 0.4% of a reinforcing agent and 0.6% of a reducing agent. The alcohol amine compound is triethanolamine; the preparation method of the reinforcing agent comprises the following steps: taking 65% of the aluminum slag, 12% of the silicon sludge, 13% of the carbide slag and 10% of the wet discharged fly ash, uniformly mixing and stirring the components, putting the mixture into a blank forming machine to form a blank, aging theblank-formed product for 24 hours, and drying the product. The efficient reducing agent is added into the formula of the grinding aid, so that the hexavalent chromium ions in cement can be effectivelyreduced into trivalent chromium ions, the hexavalent chromium ions are radioactive, the trivalent chromium ions are stable and harmless; multiple reducing agents are used at the same time, so that itis guaranteed that the mixing amount is low, the using effect is good, preparation is easy and efficient, and the cost is low.

The invention relates to a positron emission tomography simulation method based on numerical calculation. The method comprises the following steps: constructing a standard sample or a human tumor model; constructing a PET drug model; constructing a radionuclide drug emission and annihilation model; constructing a geometric model of the PET detector; constructing a photon pair coincidence detectioncalculation model; filling and displaying a PET original data sinogram; reconstructing a sinogram to obtain a PET image; and PET image storage and display. The invention further relates to a positronemission tomography simulation system based on numerical calculation. According to the invention, the PET imaging principle is dynamically visualized without hardware and radiopharmaceutical support.

The invention relates to the technical field of ceramic production, and provides a noctilucent glaze, a noctilucent ceramic and a preparation method thereof. The noctilucent glaze and ceramic have the advantages of environment-friendliness, high stability, luster, and brightness, good quality of ceramic products, large capacity of stored light, and long illumination time. The noctilucent ceramic is prepared from the following raw materials in parts by weight: 25 to 35 parts of frit, 5 to 35 parts of noctilucent powder, 10 to 15 parts of adhesive, 25 to 35 parts of hydrocarbon type organic solvent, 0.5 to 3.5 parts of high temperature oxidizing agent, and a glaze-free ceramic product, which has been burned at a high temperature and has been highly porcelainized.

The invention relates to a method for producing a high performance structure lightweight aggregate by using copper slag; the lightweight aggregate is prepared from the following raw materials in parts by weight: 30 to 50 parts of the copper slag, 2 to 10 parts of a stone material, 5 to 10 parts of shale, 30 to 70 parts of sandstone, and 1 to 5 parts of a mineral material. The preparation method includes the steps of selection of the raw materials, mixing of the raw materials, grinding, water addition, sintering and cooling. The method has the advantages of wide raw material sources, low price, simple preparation, and convenient implementation.

The invention provides an annular seal space for neutron static high-pressure experiments. An annular seal space cover of the annular seal space comprises an annular seal space roof, a bellows and anupper flange port. The annular seal space roof and the upper flange port are respectively connected to upper and lower ends of the bellows. The upper flange port is an open end of the annular seal space cover. The annular seal space roof is a closed end of the annular seal space cover. The annular seal space bottom comprises a lower flange port, a neutron window, an annular seal space location hole and a high-pressure chamber bayonet. The lower flange port is placed at an upper opening of the annular seal space bottom; the neutron window is positioned below the lower flange port; the annular seal space location hole is positioned at the center of the bottom of the annular seal space bottom; and the high-pressure chamber bayonet is positioned at the bottom of the annular seal space bottom.

The invention provides a nontoxic environment-friendly glue material, and belongs to the technical field of chemical materials. The glue material is prepared by mixing and blending a bonding substance, a hardener, a catalyst, a filling material, a solvent and other additives. The glue material provided by the invention is a bonding material with glue saluting components, can be widely used in bonding of a plurality of substances, such as rubber, metal, plastic and fabric, and can also be used together with other materials; besides, the glue material has advantages of strong binding property, water proof, oil resistance, no toxicity, no pollution, no radioactivity, low preparation cost and low energy consumption, thereby catering to development trend of future bond materials.

The invention discloses a preparation method of a luminescent ceramic material. The luminescent ceramic product is red, blue, purple or green fluorescent ceramic; red luminous powder is contained in the red fluorescent ceramic; blue luminous powder is contained in the blue fluorescent ceramic; purple luminous powder is contained in the purple fluorescent ceramic; green luminous powder is contained in the green fluorescent ceramic. Compared with the prior art, the luminescent ceramic material, the preparation method and application have the advantages that the luminescent ceramic material is applicable to various ceramic tiles or glass; the obtained fluorescent product can be continuously luminescent in dark places after the material with the functions of light absorption, light storage and luminescence absorbs various kinds of visible light and reaches the saturation; the cycle use without the number of times is realized; the afterglow time is long; the brightness is high; a series of characteristics of corrosion resistance, abrasion resistance, aging resistance, flame retardance, no toxic and side effects, no radioactivity and the like are realized.

The invention discloses a concrete pavement brick backing material with water permeability. The concrete pavement brick backing material comprises the following compositions: NO.42.5 cement, 0.5cm ovals or ores, 200-mesh broken oval powder, 200-mesh broken oval powder and water. Compared with the prior art, the brick prepared from the concrete pavement brick backing material with water permeability is high in compression strength, good in bending capability, has a water permeability function and standard geometric dimension, is antiskid and does not have radioactivity.

The invention discloses a method for monitoring the wear state of an ordered microgroove multilayer abrasive grinding wheel based on a radioactive signal. A large number of abrasive blocks are distributed on the outer circumferential surface of the grinding wheel, binding agents in the majority of abrasive blocks are electroplated Nickel-28 layers without radioactivity, and binding agents in partof the abrasive blocks are electroplated Nickel-63 layers with radioactivity; and the monitoring method comprises the steps that the radioactive signal on the grinding wheel is monitored in real timethrough a signal detector, and according to the correlation between the radial thickness of the abrasive blocks on the grinding wheel and the intensity of the radioactive signal, when the intensity ofthe detected signal is rapidly weakened, it is indicated that the electroplated Nickel-63 layers are being worn sharply, namely, abrasive layers are worn seriously, and the grinding wheel needs to betrimmed; when the detected signal reaches a certain threshold value, it is indicated that the protruding height of the trimmed abrasive layers meets the requirement, and grinding can be carried out;and according to the intensity of the radioactive signal, whether the grinding wheel needs to be trimmed or can be used for grinding is judged. The method can monitor the wear state of the grinding wheel in real time, trims the grinding wheel in time, and improves the grinding efficiency and quality.