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45 results about "Technique development" patented technology

A2/O+A/O technique wastewater biological denitrification phosphorous removal process and its device

The invention pertains to a field of the technique development of sewage treatment system. The invention is designed to solve the problem of instability and low standard-reaching rate of biological denitrification and phosphorus removal technic A2/O. The problem is caused by the competition of carbon source. The invention is based on the theory of dephosphorization and denitrification by denitrification and reasonably takes the advantage of the idea that intake carbon sources can be used instead of additional carbon sources to improve denitrification rate. The invention is designed to update the technic A2/O to the technic (A2/O+A/O) of anaerobia-anoxia 1-aerobic 2-anoxia 2-aerobic 2, and the invention can also optimize the nutrient removal ability of the technic (A2/O+A/O) by starting the switches of aeration and stirring and side-flow pump in anoxia 2 zone according to different quality and quantity of intake water. The invention can also fully exert the denitrification phosphorus removal performance and effectively use the intake carbon source within the technic (A2/O+A/O), can effectively improve water quality, evidently reduces operation cost and reforms operation status. The invention is applicable to urban sewage treatment which demands on a nutritive matter emission standard.
Owner:BEIJING UNIV OF TECH

High-speed rail smoothness detection system and method based on satellite positioning and inertial navigation.

The invention relates to the field of high-speed rail smoothness detection and in particular to a high-speed rail smoothness detection system and method based on satellite positioning and inertial navigation. The system and method can obtain high-precision external geometric parameters of a rail by arranging the GT-CORS base station network by establishing a GNSS reference station on the CPII. Through a gauge detection device, a sleeper identification device, an odometer on a rail detection vehicle and in combination with the acquisition of the accurate coordinate results of three GNSS antennas, the rail parameters can be calculated to guide the precise rail adjustment. Large-scale satellite positioning monitoring point networking method millimeter-level joint solution and three-antenna GNSS rail inspection equipment short baseline fast and millimeter-level solution method achieves precision of plane 1 to 2mm and an elevation measurement error of +/- 2.5mm. The method avoids the dependence on CPIII, increases rail detection speed from the original 100m/h to 1000m/h d, greatly improves the detection efficiency of the external parameters of the rail, significantly reduces economic cost, and has broad technical development and application prospects.
Owner:山东北斗华宸导航技术股份有限公司 +1

Antibody library of bacteriophages and applications in immunoassay of pesticide residue

The invention relates to a phage antibody library which assembles an ScFv gene fragment between Restriction Enzyme cutting sites of SfiI and NotI of a pCANTAB5E carrier. The phage antibody library is characterized in that the ScFv gene fragment can be affinitive and enriched with antigens of 16-membered macrolide agricultural chemicals to form a soluble single-chain antibody and the phage antibody library is applied to immunoassay of pesticide residue. The phage antibody library has the advantages that the antibody with high affinity can be obtained without animal immunization, the test period is short, the antibody library is the phage antibody library which takes small molecular milbemycin oxime of a 16-membered macrolide generic structure as immunogen to construct, the antibody library theoretically can directly obtain a specific antibody library of 16-membered macrolide compound through screening, the screening flux is high, the efficiency is high, the specificity is strong, and the affinity selecting range is wide, so that the phage antibody library has wide application prospect in the aspects such as agricultural chemical antibody preparation, testing technique development and the like.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Preparation method of coal ash modified nanometer aluminum oxide/polyimide composite film

The invention discloses a preparation method of a coal ash modified nanometer aluminum oxide / polyimide composite film. The preparation method can be used for preparing the nanometer aluminum oxide hybrid polyimide film by utilizing nanometer aluminum oxide sol, so that corona-resistant characteristics and dielectric performances of the polyimide film can be remarkably improved, and the corona-resistant service life of the nanometer aluminum oxide hybrid polyimide film is 8-9 times that of the pure polyimide film. The preparation method further can be used for improving and overcoming the defects of the pure polyimide film, remarkably improving the mechanical strength, the hardness, the abrasion performance and thermal decomposition temperature of the pure polyimide film, so that the comprehensive performances of the pure polyimide film are improved. Moreover, the novel polyimide nanometer composite film prepared by the preparation method disclosed by the invention has the characteristics of being high temperature resistance, good in mechanical performances, excellent in electrical performances, easy to machine and form, low in cost and the like, so that the development requirements of high and new technologies including the aerospace technology, the micro-electronics technology, the electrical technology, the chemical technology, the energy technology and the like can be completely satisfied.
Owner:安徽朝日电子新能源有限公司

Rotary type test tube rack for biological technique development

The invention discloses a rotary type test tube rack for biological technique development. The rotary type test tube rack comprises a base, a middle shaft, a pipe clamp, a pipe cylinder and an upper cover, wherein a base plate is horizontally arranged at the bottom, the base plate externally has the shape of a round plate body, a seat shaft vertically fixed at the base plate is welded to the axiscenter of the base plate, a lower hole is formed in the top of the seat shaft, and a middle shaft is mounted on the seat shaft; a rotating shaft is of a tubular structure, an upper hole is formed in the rotating shaft, lower threads are formed in the bottom of the rotating shaft, a blocking ring is remained at the outer part of the rotating shaft on the upper sides of the lower threads, the rotating shaft is externally sleeved with the pipe clamp, an inner ring is located at the middle shaft in the pipe clamp, a plurality of connecting rods are arranged outside the pipe clamp, and the top endsof the connecting rods are lantern rings; middle rings are respectively welded to two ends of a vertical rod, and the upper cover covers the upper part of the pipe cylinder; and a handle is welded tothe upper part of a horizontal part on the top, an upper bolt is welded to the axis center of the lower surface of the horizontal part of the top, and an opening is formed in the side surface of theshell and is just suitable for being penetrated by a test tube. The rotary type test tube rack is convenient to use and flexible to move and can be universally popularized and used.
Owner:广东一氪生物技术股份有限公司

Ultralow power consumption differential structure nonvolatile memory compatible with standard CMOS (Complementary Metal-Oxide-Semiconductor Transistor) process

The invention discloses an ultralow power consumption differential structure nonvolatile memory compatible with standard CMOS (Complementary Metal-Oxide-Semiconductor Transistor) process, which aims at solving the problem of the incapability of compatibility with the standard CMOS process. With the adoption of a differential output structure, the area of a storage unit structure is reduced. The ultralow power consumption differential structure nonvolatile memory comprises a plurality of storage units, wherein each storage unit comprises two identical modules; each module comprises a control tube, a tunneling tube, a first reading tube, a second reading unit and five transistors of a selection tube; all the transistors comprise mono-crystal and polycrystal silicon gate structure and gate oxide layers same in thickness; the storage units are compatible with the standard CMOS process. By virtue of the ultralow power consumption differential structure nonvolatile memory compatible with the standard CMOS process, the application cost is reduced; the technique development period is shortened; the ultralow power consumption differential structure nonvolatile memory is good in stability, relatively high in reading speed and high in reliability.
Owner:NAT UNIV OF DEFENSE TECH +1

Preparation method of PbTe colloid nanocrystalline self-assembly film

The invention relates to a preparation method of a PbTe colloid nanocrystalline self-assembly film driven by constant temperature, constant pressure and constant load air flow, belonging to the field of preparation of ordered nano films by using rheotaxy, and the ordered nano film material is an important material for the development of new technologies of electronics, information, biology, and the like. The method comprises the following steps of: dispersing colloid nanocrystalline in a constant temperature, constant pressure and constant load air flow deposition device filled with a mixed solvent, wherein the colloid nanocrystalline is monodisperse PbTe colloid nanocrystalline prepared by adopting a colloid chemical method; driving the colloid nanocrystalline to carry out self-assembly by utilizing bath temperature and carrier air flow; assembling the colloid nanocrystalline on a Si wafer substrate to form a PbTe nanocrystalline film layer; and then clearing away residual liquid on the surface of the film by utilizing a high-speed film throwing technology. The thickness of the film layer can be effectively controlled through controlling the deposition time, and the prepared PbTe colloid nanocrystalline self-assembly film has uniform and consistent surface and is highly ordered. A tool in the invention for controlling solution evaporation has simple structure, low cost, simple and convenient operation and effective method.
Owner:XI AN JIAOTONG UNIV

Immersion ultrasonic measurement device and method for adjusting and measuring channel gap

The invention discloses an immersion ultrasonic measurement device and method for adjusting and measuring a channel gap. The immersion ultrasonic measurement device comprises a measuring head and a distance adjustable device, wherein the measuring head includes the main body of a measuring head; a slit channel is formed in the end part of the main body of the measuring head in the radial direction, and enables the melt to flow; one side of the slit channel is provided with a probe channel; a buffer rod with a cladding layer is arranged in the probe channel; an ultrasonic probe is fixedly arranged in the buffer rod; the buffer rod is fixed on the distance adjustable device; a displacement sensor is arranged on the distance adjustable device; and the distance adjustable device drives the buffer rod to move axially along the probe channel, so that the distance from the ultrasonic probe to the radial direction of the slit channel can be adjustable. During the process of ultrasonic measurement for a polymer melt, the immersion ultrasonic measurement device can break through the restriction of the physical width of a current die and can expand the test area of the probe. The immersion ultrasonic measurement device can research the granularity size and the dispersion behavior for the polymer filling system melt in different channels, and has practical significance for the technology development of polymer processing engineering.
Owner:SOUTH CHINA UNIV OF TECH

A2/O+A/O technique wastewater biological denitrification phosphorous removal process and its device

The invention pertains to a field of the technique development of sewage treatment system. The invention is designed to solve the problem of instability and low standard-reaching rate of biological denitrification and phosphorus removal technic A2 / O. The problem is caused by the competition of carbon source. The invention is based on the theory of dephosphorization and denitrification by denitrification and reasonably takes the advantage of the idea that intake carbon sources can be used instead of additional carbon sources to improve denitrification rate. The invention is designed to update the technic A2 / O to the technic (A2 / O+A / O) of anaerobia-anoxia 1-aerobic 2-anoxia 2-aerobic 2, and the invention can also optimize the nutrient removal ability of the technic (A2 / O+A / O) by starting the switches of aeration and stirring and side-flow pump in anoxia 2 zone according to different quality and quantity of intake water. The invention can also fully exert the denitrification phosphorus removal performance and effectively use the intake carbon source within the technic (A2 / O+A / O), can effectively improve water quality, evidently reduces operation cost and reforms operation status. The invention is applicable to urban sewage treatment which demands on a nutritive matter emission standard.
Owner:BEIJING UNIV OF TECH

Method for extracting and purifying horse radish peroxidase from horse radish by using monoclonal antibody affinity adsorption technology

The invention relates to a method for extracting and purifying horse radish peroxidase, in particular to a method for extracting and purifying horse radish peroxidase from horse radish by using monoclonal antibody affinity adsorption technology. A method for extracting horse radish peroxidase by using monoclonal antibody affinity adsorption technology uses monoclonal antibodies having high specificity and high affinity aiming at horse radish peroxidase and conjugation of carrier padding to extract and purify horse radish peroxidase from horse radish by using a method of affinity chromatography. The invention uses monoclonal antibody affinity adsorption to purify HRP, thereby not only saving time and cost but also not producing much water material; moreover, compared with the traditional method, the activity of enzyme is greatly improved so as to accord with the requirement for environment-friendly and social-saving social construction. The HRP product extracted and purified by the technology has good quality and low cost, has stronger market competition, and also accords with better and better quality requirement of technical development for HRP; therefore, the invention will replace the traditional deposition purification method.
Owner:HUZHOU YINGCHENG BIOLOGICAL TECH
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