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60results about How to "Strong competitiveness" patented technology

Assembly type grass-planted concrete precast block and construction method of ecological bank adopting same

The invention discloses an assembly type grass-planted concrete precast block and a construction method of an ecological bank adopting the same. The assembly type grass-planted concrete precast blockis composed of a convex block body and concave block bodies, wherein the convex block body and the concave block bodies are connected into a whole, the convex block body is located in the middle, theplurality of concave block bodies are arranged next to the convex block body, and the convex block body and the concave block bodies are made of ecological concrete with ecological holes; greening soil coverings suitable for the growth of herbaceous plants are laid on the upper surface of the convex block body and the upper surfaces of the concave block bodies respectively, the herbaceous plants take roots on the greening soil coverings and in the convex block body and the concave block bodies; and the concrete precast blocks can be spliced and clamped together. Meanwhile, the invention provides a construction method of the ecological bank adopting the assembly type grass-planted concrete precast block according to the characteristics of the assembly type grass-planted concrete precast block. The assembly type grass-planted concrete precast block has the advantages that the structure is reasonable, the coverage rate of the planted-grass is high and the construction is convenient and rapid; and the assembly type grass-planted concrete precast block can be used for ecological protection of medium and small rivers, and can also be used for ecological protection of channels, lakes, reservoirs and ponds.
Owner:NANCHANG INST OF TECH

Digital up/down frequency conversion system and implementation method thereof

The invention relates to a digital up/down frequency conversion system and an implementation method thereof. The system comprises an A/D conversion module, a down frequency conversion mixing processing module, an extraction filtering system, a digital frequency-selecting filtering system, an interpolation filtering system, an up frequency conversion mixing processing module, a D/A conversion module, a down frequency conversion digital local oscillation module and an up frequency conversion digital local oscillation module, wherein the digital frequency-selecting filtering system comprises a frequency-selecting filtering system protection module for preventing the system from generating a limit cycle phenomenon and excessive oscillation, a shunt, a frequency-selecting filtering module for frequency-selecting filtering and filtering the signal out of band, and a multiplexer; and the output end of the frequency-selecting filtering system protection module is successively connected with the input end of the multiplexer through the shunt and the frequency-selecting filtering module. The invention has the advantages that the transmission time delay in the digital system is effectively reduced, and the transmission time delay is extremely low.
Owner:COMBA TELECOM SYST CHINA LTD

Preparation method and application of bacillus methylotrophilus LW-6 bacterial agent for biological control of meloidogyne

The invention discloses a preparation method and application of a bacillus methylotrophilus LW-6 bacterial agent for biological control of meloidogyne. The bacillus methylotrophilus LW-6 has the advantages of strong stress resistance, high-temperature resistance, drought resistance, and fast growth and reproduction, and has the characteristics of strong colonization and competitiveness, an obviousnematicidal effect, no toxicity to humans and animals and environmental friendliness. The viable spores and secondary metabolites of the bacillus methylotrophilus LW-6 have the functions of preventing and controlling tobacco meloidogyne and tobacco growth promotion, the efficiency of preventing and controlling the meloidogyne by drip irrigation treatment can reach 70.79%, and the meloidogyne killing ratio can reach 93%. The number of viable spores of a liquid microbial agent prepared by the steps of plate-activated culture of the bacillus methylotrophilus LW-6, seed culture and fermentation can be up to 5 billion / ml, and the preparation method specially comprises the following steps: preferred plate culture, specific seed culture, preferred fermentation, ultrafiltration concentration, low-temperature drying, and dosage form processing preparation.
Owner:陕西恒田生物农业有限公司

Method for manufacturing medical PE thin film four-side tear-off air-permeable adhesive tape

The invention discloses a method for manufacturing a medical PE thin film four-side tear-off air-permeable adhesive tape. The method comprises the step of: perforating the surface of medical PE thin film on which a medical adhesive is coated by heating a burr roller by utilizing a heat transfer oil carrier. The method is characterized in that: a circulation path of heat transfer oil is changed; the interlayer of the inner wall of the roller is removed from the internal structure of the roller of the burr roller; the heat transfer oil flows in the roller directly; the diameters of the inlet and the outlet in the heat transfer oil circulation path are expanded so as to expand the channel of the heat transfer oil; the roller is filled with the heat transfer oil; the heat transfer oil flows smoothly to speed up the circulation speed of the heat transfer oil so that the burr roller is heated uniformly; and holes pressed on the medical PE thin film has the characteristics of uniform size, regular shape and orderly arrangement. The times for washing the roller of the burr roller and the heat transfer oil circulation path are reduced greatly, namely once per year; and the longitudinal direction, the transverse direction, the upper, lower, left and right surfaces of the medical PE thin film manufactured by the method of the invention can be torn linearly.
Owner:上海华舟压敏胶制品有限公司

A kind of underground mining technology without tailings pool

It is an underground mining technology that does not need to build a tailings pool. It counts the total tailings data produced in the mining area and the remaining tailings data after filling the goaf; plans and selects sand within the preset range of the mining area. Aggregate yard, the empty area formed meets the storage requirements for the remaining tailings; ore and waste rock are mined in the mining area, and the ore is sorted to produce concentrate and tailings; the waste rock and beneficiation produced by mining The produced waste rocks are crushed, and the crushed materials are screened according to the preset size to form sand and gravel aggregates and screening residues; the tailings or screening residues are filled into the goaf. After the ore and waste rock are mined, a goaf containing the tailings is formed. The volume of the goaf meets the storage requirements for the tailings produced by ore sorting and the required cementing materials. A sufficient empty area is formed to fill the tailings produced after mineral processing into the underground, and there is no tailings pond on the surface, which truly realizes a "tailing-free mine". Sand and gravel aggregates can also be sold, which is conducive to environmental protection and national economic construction.
Owner:金建工程设计有限公司

Method for producing fermentative cordycep fungal powder and cordyceps polysaccharide powder through fermentation technology

The invention relates to a method for producing fermentative cordycep fungal powder and cordyceps polysaccharide powder through the fermentation technology. The method comprises the steps that inoculation is carried out on cordyceps sinensis pure bacterial strain culture on solid synthetic medium or liquid synthetic medium liquid fermentation equipment, fermental cultivation is carried out on the cordyceps sinensis pure bacterial strain culture and the media, drying and cell smashing are carried out on thalluses after the media are separated from the growing thalluses, and the fermentative cordycep fungal powder is made; then the obtained fermentative cordycep fungal powder is used as a raw material, and active immunization cordyceps polysaccharide freeze-dried powder is made through the organic solvent precipitation method, the compound enzyme method, the adsorption method and other working procedures. According to the technical scheme, the method is of significance in releasing contradiction between supply and demand of traditional Chinese medicinal materials, preserving the ecological environment, achieving valuable and rare wild medicinal material manual cultivation, producing high value-added Chinese herbal medicine products and the like.
Owner:孙悦迎

Addition and subtraction answering device for mathematics education

The invention relates to the field of mathematics education, and particularly relates to an addition and subtraction question answering device for mathematics education. The invention aims to solve atechnical problem of providing an addition and subtraction question answering device for mathematics education which can conduct a question answering competition to enable students be high in learningenthusiasm and is high in interestingness. The technical scheme is that the addition and subtraction question answering device for mathematics education comprises a box body and the like, wherein thefront side of the box body is provided with a box cover, the box cover is provided with two openings, the middle part of the front side of the box cover is engraved with '+', the right of the front side of the box cover is sequentially engraved with '=' and a question mark, the box body is internally provided with a rotating device, the middle part of the front side of the box cover is provided with an adjusting device, and the adjusting device is located between the two openings. The addition and subtraction question answering device for mathematics education adjusts Arabic numerals in the openings through the rotation of the rotating device and adjusts the plus or minus sign through the adjusting device, thereby enabling the students to perform question answering according to the observed Arabic numerals. The addition and subtraction question answering device for mathematics education can randomly select a group for question answering through a group selecting device, thereby enabling the competitiveness to be higher, and being more interesting.
Owner:江西宏大教育科技发展有限公司
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