194results about How to "No radioactive contamination" patented technology

The invention discloses a artificial stone plate prepared by adding cobalt naphthenate accelerator, methylethylketone, light stabilizer, paint and antioxidant into unsaturated polyester resin. The preparation method includes the following steps: firstly modifying the aluminium hydroxide and/or calcium carbonate to get surface modified aluminium hydroxide and/or calcium carbonate or pure aluminium hydroxide powder, then adding cobalt naphthenate accelerator, methylethylketone, light stabilizer, paint and antioxidant into unsaturated polyester resin, uniformly mixing and stirring the mixture in a high speed stirring reactor, adding surface modified aluminium hydroxide and/or calcium carbonate powder or pure aluminium hydroxide powder, stirring and casting the mixture into a mould after vacuum defoamtion, heating up to 60-80 DEG C and curing to get the artificial stone and marble panel.

The invention discloses a paper sheet quantitative detection device which is based on a terahertz time-domain spectroscopy technology and a method thereof. The detection device includes: a femtosecond laser, a beam splitter, an optical delay device, a reflective mirror, a focusing lens, a photoconductive antenna type terahertz transmitter, a polyethylene lens, a polarizer, a zinc telluride electro-optical crystal, a phase-locking amplifier, a high-power amplifier and a data collection and processing system. The invention makes use of the polyethylene lens for aligning the terahertz waves to the parallel light beams, and the polyethylene lens is used for focusing the terahertz waves on a terahertz detector after penetrating the paper sheet. The paper sheet quantitative detection method which is disclosed by the invention firstly establishes a paper sheet quantitative detection mathematical model, then respectively measures the time-domain signals of the terahertz waves penetrating the air and penetrating the paper sheet, extracts the delay time and applies the established mathematical model to calculate the paper sheet quantitative value. The invention has high precision of the measurement, strong anti-interference capability, small influence of multiple reflections and safe usage, so the invention can be used in the precise paper sheet quantitative detection of the field of paper making.

The quantitative moisture measurement method for near infrared paper comprises: modulating the infrared light into near infrared lights with different wavelength and arranged as chronological order to reflect with a reflector to the emission integral semisphere to reflect and cross the paper to focus on a optical-electrical converter, sending the converted electric signal to microprocessor for pretreatment; then, transmitting into a data centralized processing unit to recognize and divide into reference signal with one path to control front amplifier and another path as the reference signal and measurement signal; calculating in the processing unit to obtain quantitative moisture content. This invention realizes online measurement with high accuracy and low cost.

The invention relates to a building insulated wall body material and a preparation method of the building insulated wall body material. The preparation method comprises the following steps of: (1) mixing ardealite, red mud, fly ash, cement, yellow sand and lime according to the proportion, and adding a foamer so as to obtain a material which is uniformly mixed; (2) adding water in the material after mixing, performing ball milling, and preparing a slurry;(3) pouring the slurry after ball milling in a mould so as to carry out injection molding; and (4) placing a green body in a maintenance box, maintaining under high temperature and high pressure, and then maintaining under a natural state. Compared with the prior art, the building insulated wall body material and the preparation method have the advantages that the industrial residue, the ardealite and the red mud are sufficiently utilized, the pollution of the ardealite and the red mud to the environment can be reduced, and thus the purpose of recycling resources is achieved. The manufacturing of the building heat insulating material has the advantages of short period, low cost, no radioactive contamination, low density and high strength.

The invention discloses an NGAL time-resolved fluoroimmunoassay nanometer immunochromatographic quantitative detection test paper strip and a preparing method thereof. The test paper strip comprises a backing substrate plate. The backing substrate plate is provided with a nitrocellulose membrane, a sample combining pad and a water absorbing membrane. The sample combining pad and the water absorbing membrane are respectively laminated on two ends of the nitrocellulose membrane. The sample combining pad is covered with an NGAL monoclonal antibody labeled with a time-resolved fluorescent substance. The nitrocellulose membrane is provided with a detection line and a quality control line. The detection line is covered with an NGAL monoclonal antibody of another epitope. The quality control line is covered with goat anti-rat IgG. The test paper strip and the method are characterized by high sensitivity, high specificity, good stability, no radioactive contamination, and the like and can be widely applied to NGAL clinical immunoassay and scientific research.

The invention relates to a green glass-ceramic plate made from lead-zinc smelting slag and a manufacturing method thereof. The glass raw material is prepared from the following components in parts by weight: 40 to 60 parts of lead-zinc smelting slag, 26 to 38 parts of quartz, 15 to 24 parts of lithium feldspar, 2 to 4 parts of soda ash, 2 to 3 parts of zinc oxide, 2 to 5 parts of barium carbonate, 1 to 3 parts of borax, 2 to 2.5 parts of chromium oxide, 0 to 0.2 part of copper oxide and 0.04 to 0.2 part of carbon powder. The invention is not only in line with the common glass-ceramic produced by completely adopting industrial materials on the aspect of the performance, but also can realize waste utilization, reduce the environmental pollution, the product cost and the melting temperature of glass, improve the melting speed and the melting furnace efficiency of the glass, decrease the energy consumption and can be widely applied to building decoration materials, especially applied in various building decoration engineering, such as inside and outer walls, floors, pillars, table boards of the building, and the like.

The invention relates to the medical field of immunoassay, and concretely provides a dissociate human chorionic gonadotrophin beta-subunit magnetic particle chemiluminescence quantitative assay kit having the advantages of simplicity, rapidness, high sensitivity, wide linear range and good stability, and its preparation method. The method combines a magnetic particle immune separating technology to apply an enzymatic chemiluminescence substrate on the basis of enzyme-linked immunosorbent assay, and allows an optical signal generated by the detection of the luminescence substrate to substitute a chromogenic substrate in enzyme immune assay, so the method has the advantages of substantially improved sensitivity, simple operation and wide practicality, can be applied to open semi-automatic chemiluminescence detectors, can also be applied to full-automatic measure systems, and can realize batch and fast detection, low use cost, and easy popularization and application.

The invention discloses a calcium sulfate-whisker compounded quartz stone board product, which comprises the following materials in parts by weight: 58-75% of particle raw material, 10%-25% of quartz powder, 0.01%-10% of pigment, 0.1%-1% of silane coupling agent, 8%-12% of unsaturated polyester resin, 5%-10% of anhydrous calcium sulfate, and 0.8-2% of curing agent, wherein the particle raw material is one or two selected from quartz particles and glass particles. The product is an environment-friendly novel decoration material which has high property and no radioactive contamination, can be recycled, and has the characteristics of gay colors, high finish degree, uniform color, pressure-resistance and abrasion-resistance, good toughness, compact structure, low water absorption, corrosion-resistance, high strength, impact-resistance, innocuousness and zero radiation, and the like.

The invention discloses a method for measuring the activity of Phi29 DNA polymerase and a rolling circle sequencing method. The method for measuring the activity of Phi29 DNA polymerase comprises the following steps: taking a circular single-stranded DNA as a template; in the presence of an amplification primer, using Phi29 DNA polymerase to trigger rolling circle replication to generate a large amount of continuous single-stranded DNA copies; then doping fluorescent molecules into the amplification products, detecting the fluorescent signals of the amplification products to quantify the produced single-stranded DNA copy number, and thus calculating the activity of Phi29 DNA polymerase. The provided method has the advantages of no radioactive contamination, simpleness, rapidness, and high sensitivity, and can be applied to high-flux and automatic polymerase screening.

The invention discloses a human myeloperoxidase (MPO) chemiluminescent immunodetection kit. The kit comprises the following components: 1) a human MPO standard product; 2) a vector coating a human MPO monoclonal antibody; 3) the enzyme-labeled human MPO monoclonal antibody; 4) a chemiluminescent substrate on which the enzyme acts; and 5) a concentrated cleaning solution. The kit can perform concentrated quantitative detection on the MPO molecules in a serum sample of a patient. The kit effectively utilizes a chemiluminescent technology principle and adopts the enzyme to catalyze the chemiluminescent substrate on the basis of enzyme-linked immunoassay so as to improve the detection sensitivity, has the advantages of high stability, high specificity, excellent accuracy, simplicity in operation and no radioactive pollution, and can provide specific, quick and reliable basis for clinical diagnosis of cardiovascular diseases such as atherosclerosis (AS), acute coronary syndrome (ACS) and coronary heart disease (CHD).

The invention relates to a double-tagging time resolution fluoroimmunoassay reagent kit based on a PG magnetic particle and a preparing method and detecting method thereof and belongs to the technical field of immune detection analyzing techniques and nanometer biological techniques. The reagent kit comprises a reaction buffer solution, a concentrated cleaning solution, an enhancing solution, a magnetic particle solution coated with PGI monoclonal antibody, a magnetic particle solution coated with PGI monoclonal antibody, a PG calibrator solution, an europium-labeled PGII monoclonal antibody solution and a samarium-labeled PGI monoclonal antibody solution which are independently packaged. The reagent kit can provide a double-tagging reaction system close to a homogeneous phase, can guarantee that the content of PGI and the content of PGII can be detected at the same time, enables a detecting result of PGI and PGII in the same sample liquid to be high in accuracy and small in error, greatly shortens reaction time, shortens detection time, improves efficiency, improves detection sensitivity and specificity and brings great convenience to clinical application.

The invention discloses a chromogranin A chemiluminescence immunoassay reagent kit and a preparation method of the reagent kit. The reagent kit comprises the following ingredients: 1) chromogranin A standard products; 2) horseradish peroxidase labeled chromogranin A monoclonal antibodies; 3) chromogranin A monoclonal antibody covered magnetic particles; 4) white non-transparent micro porous plate; 5) cleaning solution and 6) chemiluminescence substrate A and B work solution. The chemiluminescence immunoassay and the nanometer magnetic particle technology are combined, and the chromogranin A chemiluminescence immunoassay reagent kit is provided. The defects of low sensitivity and poor accuracy of the traditional enzyme-linked immunosorbent assay (ELISA) method are overcome, the radioactive pollution of the radioimmunoassay (RIA) technology is avoided, and the chromogranin A chemiluminescence immunoassay reagent kit and the preparation method thereof have the advantages that safety is realized, the environment is protected, the specificity is high, the sensitivity and the accuracy are high, and the like.

A high-waterproof colorful stone-like paint is composed of the following raw materials in percentage by weight: 11 to 15% of soap-free silicone acrylic emulsion, 2 to 4% of aqueous fluorocarbon resin emulsion, 54 to 63% of natural colorful sand, 2 to 4% of calcium carbonate and magnesium carbonate powder, 14 to 20% of water, 4 to 6% of natural rock sheets, 0.1 to 0.5% of water repellent, 0.1 to 0.3% of antifoaming agent, 0.1 to 0.3% of wood fiber, 0.1 to 0.2% of cellulose ether, and 1 to 2% of film-forming auxiliary agent. The soap-free silicone acrylic emulsion and aqueous fluorocarbon resin emulsion are mixed and used as the adhesive of the stone-like paint. Natural colorful sand with different finenesses is matched with natural rock sheet to prepare the stone-like paint. The prepared stone-like paint has the advantages of high waterproofness, natural color and luster, stone-like texture, good imitation effect, and high adhesive strength. The coating will not fade and become loosen and scratched. After drying, the paint film is compact, and moreover the paint has the advantages of strong adhesive force, large hardness, cracking resistance, alkali/acid resistance, corrosion resistance, no odor or toxicity, safety, and environment-friendliness.

The invention relates to a method for detecting hyaluronic acid in human serum, body fluid or tissue homogenate by a radioimmunoassay method. By a method of using solid phase-coated and europium-marked hyaluronic acid binding protein (HABP-Eu<3+>), reagents such as a first antibody, a second antibody and the like are not needed, a sample is easy to add, reaction is quick, the reagents have long shelf life and are environmental-friendly, europium is stably combined with HABP, storage time can be more than 12 months, and radioactive pollution is avoided.

The invention discloses a method for measuring activity of terminal deoxynucleotidyl transferase. The method comprises the steps of: firstly, synthesizing a primer according to a single stranded template, annealing the single stranded template, then performing a 3' end tailing reaction catalyzed by TdT enzyme in the presence of one of four deoxyribonucleoside triphosphates, after the 3' end tailing reaction is completed, performing a polymerization reaction in the presence of enough DNA polymerase without 3'-5 'excision enzyme activity to generate double stranded DNA, finally measuring the relative quantity of the double stranded DNA or single stranded DNA in the reaction system after the polymerization reaction is finished, and deducing the activity degree of the Poly (A) polymerase according to the detection result, wherein the basic group at the first site on the used single stranded template in the 3' direction and the deoxyribonucleoside triphosphate used in the tailing reaction are not complementary. Compared with the existing method, the method disclosed by the invention is free of radioactive pollution, simple and quick to operate, low in reagent preparation cost and high in sensitivity.

A measuring method of activity of a T4 DNA polymerase is disclosed. The method includes: under the circumstance of no dNTP, adding the T4 DNA polymerase into a reaction system adopting a double-strand linear DNA template as a substrate, detecting the relative amount of double-strand DNA after a reaction is finished so as to measure the excision enzyme activity of the T4 DNA polymerase, and allowing the excision enzyme activity of the T4 DNA polymerase to be related to the polymerase activity so as to obtain the polymerase activity degree of the T4 DNA polymerase. The polymerase activity is measured by conveniently measuring the excision enzyme activity and by utilization of relevance between the excision enzyme activity and the polymerase activity of the T4 DNA polymerase. Compared with methods in the prior art, the method is free of radioactive contamination and simple and rapid in operation, and the method overcomes interference of the excision enzyme activity on the measurement of the polymerase activity, so that a result of the method is more accurate.

The invention provides an industrial residue phosphogypsum baking-free brick and a manufacturing method thereof. The raw material takes the phosphogypsum as the master batch and sand, sand grains and cement as accessories. The phosphogypsum is crushed, burdened, mixed and molded under the high pressure of 40MPa-85MPa to form green bricks; the product is obtained after short natural maintenance of the green bricks. The invention has the beneficial effects that the phosphorous chemical industrial residue phosphogypsum is effectively utilized so that the stacking of the phosphogypsum produces less pollution to the environment; the phosphogypsum baking-free brick saves energy and land resources and reduces emission compared with the clay sintered bricks; the brick has short production period, low cost and no radioactive pollution; the brick is a novel high quality baking-free brick which has high tensile and compressive strength and neat appearance, reaches the national JC239-2001 standard and is used for buildings.

The invention provides a chemiluminescence immunoassay test kit of prostatic acid phosphatase, which belongs to the clinical blood detecting and assaying technique field. The test kit includes: 1) prostatic acid phosphatase calibrating article; 2) solid-phase carrier which is coated by monoclonal antibody against prostatic acid phosphatase; 3) monoclonal antibody against prostatic acid phosphatase which is labeled by enzyme; 4) chemiluminescence zymolyte on which the enzyme reacts; 5) washing liquid. Furthermore, the invention also provides a preparing method of the test kit which includes steps as following: the calibrating article is prepared; the solid-phase carrier is coated by the monoclonal antibody against prostatic acid phosphatase; the monoclonal antibody against prostatic acid phosphatase is labeled by the enzyme; the calibrating article, the enzyme labeled antibody and the chemiluminescence zymolyte above can be filled and packed through separate packing; and the finished produce is prepared after assembly. With security and reliability, the test kit has the advantages that the sensitivity is high, and the specificity is strong.

The invention relates to a ready-mixed plastering mortar for an interior wall. The ready-mixed plastering mortar for the interior wall is characterized by being prepared from the following raw materials: 60-70 parts of artificial sand, 12-13 parts of cement, 10-12 parts of II grade coal ash, 2-3 parts of cellulose ether, 2-3 parts of redispersible powder and 0.1-0.5 part of additives. The ready-mixed plastering mortar for the interior wall has excellent heating retaining property and water retaining property, and the adopted additives are capable of remarkably improving the properties such as anti-permeability, crack resistance and shrinkage reduction property of the mortar.