57results about How to "Increase air permeability" patented technology

The invention relates to the organic fertilizer field, in particular to tobacco powder biological organic fertilizer formula and production method thereof. The invention is characterized in that the formula includes the following components by parts by weight: 5-6 parts of tobacco powder, 0.5-1.5 parts of brown coal, 1.5-2.5 parts of live stock excrement and 1-2 parts of straw powder. The tobacco powder biological organic fertilizer is complete in nutrient elements and can regulate soil, activate micro organism liveness in soil, overcome soil hardening and improve soil air permeability; insect pest in soil can be effectively killed; stress resistance of crop is improved, stress reaction of crop is improved, and deformity is reduced; the organic fertilizer is safe and notoxic to human, live stock and environment; the organic fertilizer uses tobacco powder of cigarette factory and redrying factory and straw powder as main raw materials, solves the problems that tobacco powder of the cigarette factory and redrying factory is difficult to treat and secondary pollution is caused by direct burning of the tobacco powder and straw and is environmentally friendly.

The invention discloses a novel green biological organic fertilizer and belongs to the technical field of agricultural biological fertilizers. The novel green biological organic fertilizer is prepared from the following raw materials: straw mixture, seaweed residue, humic acid, amino acid and multifunctional zymophyte. The novel green biological organic fertilizer provided by the invention has the advantages that nutrients required by crops can be provided, incidence of plant diseases and insect pests can be greatly reduced, usage amount of pesticide is reduced, and crop yield and quality are improved.

The present invention relates to preparation of a municipal dewatering sludge based coating material for seal of landfill site, is mainly used for seal covering of the landfill site, and belongs to the field of environmental geotechnical engineering. The municipal dewatering sludge is employed as a basis material and modified to be used in seal covering of the landfill site. An air-out layer of the coating material for seal of landfill site has good gas guide performance; an impervious layer is not easily cracking and has low permeability; and a vegetation nutrient layer has rich nutrients and good hydrophobicity. The covering material of the present invention realizes resource utilization of municipal dewatering sludge and saves land resource; the covering material can be produced by industrialized production, has a simple construction for application to seal covering of the landfill site, and has advantages of simpleness, fastness, strong operability, high survival ratio of plants, so as to guarantee quality of seal covering of the landfill site, meet various technological indexes of seal of the landfill site, and greatly improve the landfill environment.

The invention discloses a terahertz wave band wireless transmitting and receiving device and a transmitting and receiving method thereof. The transmitting and receiving device comprises a transmitting terminal composed of a first cold head, a terahertz quantum-cascade laser and a first polyethylene window plate, an optical path part containing two off-axis parabolic mirrors and air and a receiving terminal composed of a second cold head, a terahertz quantum well detector and a second polyethylene window plate. The invention has the advantage that currently undistributed frequency range of electromagnetic wave is selected to transmit and receive electromagnetic wave, the absorption of the selected frequency point of electromagnetic wave by the air is relatively weaker, thus reducing the attenuation loss of terahertz wave during the transmission process; the semiconductor quantum-cascade laser which has high energy conversion efficiency and small volume, is easy to integrate, and can work for long time and perform mass production is adopted by the transmitting terminal; the semiconductor quantum well detector which has small volume, is stable and reliable and can perform mass production is adopted by the receiving terminal; and the adopted semiconductor laser and detector both can operate at high frequency, thus being suitable for future terahertz communication applications.

The invention relates to the field of an organic fertilizer preparation process and in particular relates to a material formula of a bioorganic fertilizer. The material formula comprises the following components: 50-60 parts of tree root debris, 40-50 parts of chicken and duck dung, 30-50 parts of dried seaweed, 2-5 parts of a decomposition agent, 15-20 parts of swill and a proper amount of vinegar. The material formula has the characteristics that the material formula can conduce to conditioning soil and increasing the activation rates of microorganisms in soil; in particular, by adding the tree root debris and the chicken and duck dung, soil hardening can be overcome, the soil air permeability can be improved, and the soil becomes more fertile, so that the yields of food crops, commercial crops, vegetables and melons and fruits are substantially increased; the quality of agricultural products is improved, and fruits have bright colors and uniform sizes and ripen in a concentrated manner; the sugar contents and vitamin contents of melon agricultural products are increased, so that the melon agricultural products have good tastes and are beneficial to expanding export and increasing the selling prices.

Disclosed is a printed gas-guiding board. The printed gas-guiding board comprises a substrate, wherein drilling holes, which consists of a first drilling hole and a second drilling hole, are formed in the substrate in a run-through manner; the second drilling hole is formed above the first drilling hole; and the second drilling hole is connected with the first drilling hole. The printed gas-guiding board has a good gas-guiding effect; completeness and non-falling-off of the gas-guiding board can be ensured specific to a dense pore board; and the problems existing in the prior art can be effectively overcome.

The invention discloses an excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves, and a preparation method thereof. The excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin used for labour protection gloves is prepared from a polyester polyol, a castor oil polyol, an isocyanate, a dihydric alcohol chain extender, a hydrophilic chain extender, a solvent, a demoulding auxiliary agent, and malic acid. The Martindale friction times of the excellent-demoulding-performance high-wear-resistant wet-method polyurethane resin is larger than that of PFT-3046L.

The invention discloses a preparation method of a bio-organic fertilizer which is prepared from nitrate mud, animal waste, flint clay, a rapeseed cake, phosphorus powder, plant ash and biogas fluid via combination and fermentation. The preparation process comprises the following steps: respectively airing the nitrate mud, the flint clay, the phosphorus powder, the rapeseed cake, the plant ash and the animal waste until the water content of the materials is lower than 12%, then respectively smashing the materials, mixing the materials and stirring uniformly to obtain a mixed material, mixing the biogas fluid with the mixed material to stir uniformly and adjusting the water content of the mixed material to 55-65%, and carrying out pile fermentation. The bio-organic fertilizer is wide in raw material source, low in cost, simple in preparation process, low in prepared product cost, comprehensive in nutrient element and good in fertilizer effect, and has the properties of increasing the organic matters of the soil, improving the soil structure, promoting the microbial activities of the soil, strengthening the fertilizer maintenance and fertilizer supply of the soil, increasing the crop output and improving the agricultural product quality.

The invention discloses a gas mask composite material. The gas mask composite material comprises the following raw materials in parts by weight: 55 to 65 parts of chlorinated butyl rubber, 10 to 20 parts of mixed three-dimensional network graphene, 5 to 10 parts of carbon black, 4 to 8 parts of dioctyl sebacate, 2 to 6 parts of an anti-aging agent, 1 to 3 parts of an accelerator EDC1 and 15 to 25parts of zinc chloride. According to the gas mask composite material, the bentonite in the modified chlorinated butyl rubber is of a layered structure, firstly, the bentonite is calcined and activatedto enhance the surface activity of the modified chlorinated butyl rubber, then the modified chlorinated butyl rubber and the nano modified liquid are stirred and react together, the nano modified liquid firstly adopts a coupling agent to modify nano silicon dioxide so that the nano silicon dioxide has an organophilic effect, and then the bentonite is modified through the coupling agent in the nano modified liquid so that the nano silicon dioxide is firstly attached in the layered structure of the bentonite, the nano silicon dioxide is high in activity and high in specific surface area and canbe used as an intermediate point to graft chlorinated butyl rubber and organic bentonite.

A heavy metal soil remediation agent is prepared by the following raw materials, by weight, 8-12 parts of water-retaining agents, 6-14 parts of sulfocompound, 4-8 parts of calcium oxide, 3-7 parts of microorganism chelating agents, 8-24 parts of mushroom residues, 7-11 parts of wood bits, 6-12 parts of chitosan, 6-10 parts of magnesium fluosilicate, 7-14 parts of polyethylene oxide, 3-5 parts of iron sulfate, 7-9 parts of apatite, 4-27 parts of ardealite powder, 2-4.5 parts of fulvic acid potassium, 0.1-0.2 part of coco coir and 0.4-0.7 part of grass carbon. The heavy metal soil remediation agent has the advantages that various heavy metal pollutants in polluted soil can be lowered effectively, the soil air permeability can be increased, and the growing environment of crops can be improved.

The invention discloses an efficient seedling cultivating method for leafbuds of a Yunshan 2# grape novel variety. The method comprises the following steps: (1) automatic control of environmental factors; (2) maternal plant plantation management of Yunshan 2# grapes; (3) preparation of an in vitro material; (4) treatment of the in vitro material; (5) seedbed inoculation and management; and (6) on-site hardening-seedling and transplantation. By using semi-lignified leafbuds as the in vitro material to cultivate seedlings, the seedling cultivating method disclosed by the invention breaks through the conventional seedling cultivating technological forms such as seeds, cuttage, tissue culture and the like so as to form technical innovation of Yunshan 2# seedling cultivation. The seedling cultivating method disclosed by the invention can realize the following technical indexes: characteristics of the original variety Ziwuhua grape: high yield and bumper crop, stress resistance and the like are ensured, and no variation is available; the seedling cultivating period is shortened to 60 days, and the highest seedling cultivating number of times reaches 6 time; the seedling survival rate reaches over 95%; the cost of Yunshan 2# seedlings can be lowered to 30 yuan/strain.

The invention provides a light bar and a display screen using a bent-leg circuit connector to tilt down. Its components include a light bar PCB equipped with a plurality of light-emitting elements and a circuit connector. The circuit connector connected to the PCB, one end of the circuit connector is connected to the light bar PCB, and the other end is connected to the column PCB, and all the pins at one end of the circuit connector are bent so that the plane of the light bar PCB or its extension surface and the plane of the column PCB or its extension surface Between, an included angle α is formed, and α is greater than 0° and less than 90°. The present invention makes the angle of the maximum light intensity of the LED lamp of the light bar tilt downward, improves the perceived brightness of the display screen installed at a high place, thus improves the energy-saving effect of the display screen, makes the light bar easy to be narrowed, and improves the air permeability. Rate. Moreover, the improvement cost is low, the risk is small, the structure is simple, and the manufacture and maintenance are easy.

The invention discloses a method for verifying an optical load on-orbit absolute radiometric calibration result. The method comprises the following steps: selecting an underlying surface and a calibration field based on calibration field target characteristics and atmospheric measurement data; synchronously measuring target reflection characteristic parameters and atmospheric parameters of the calibration field on the ground, and processing the synchronously measured data on the ground; the method comprises the following steps: acquiring image data based on a satellite-borne optical sensor, processing the image data, and extracting a corresponding channel calibration coefficient of the sensor; calculating a radiance simulation value at the entrance pupil of the satellite-borne optical sensor of the calibration field by using an atmospheric radiation transmission model; calculating the relative difference between the equivalent radiance simulation value and the equivalent radiance observation value at the entrance pupil of the satellite-borne optical sensor of the calibration field; based on the error transfer theory, carrying out single-field verification uncertainty evaluation, and obtaining single-field verification uncertainty; and based on an international measurement basis comparison result analysis method, determining a weight coefficient of each field by taking single-field verification uncertainty as a component, and synthesizing a multi-test-field comprehensive foundation verification result and total uncertainty.

The invention discloses a sidewalk structure for an urban natural turf. The sidewalk structure for the urban natural turf comprises planting soil layers, sand column walls, plastic lattice steel meshtype pedals and water drainage pipe, wherein a plurality of sand column walls are arranged at intervals and positioned above a rammed earth layer; planting soil is filled between the two adjacent sandcolumn walls to form the planting soil layers for plants to be planted; the plastic lattice steel mesh type pedals are erected above the two adjacent sand column walls; a plurality of mesh-like plastic lattices for the planted plants to penetrate through are arranged on the plastic lattice steel mesh type pedals; a plurality of steel wires are distributed on the plastic lattice steel mesh type pedals to form a mesh-like structure so as to reduce the area of the single plastic lattice; and the water drainage pipe is embedded in the planting soil and runs through the plurality of sand column walls. The invention discloses the sidewalk structure for the urban natural turf; and the sidewalk structure for the urban natural turf has the advantages that the plants are planted in sidewalks and the survival rate and durability of the natural turf are enhanced.

The invention provides a multifunctional self-reinforced type double-component filament electrostatic filter material as well as a preparation method and application thereof. The preparation method ofthe filter material comprises the following steps that 1) melt spinning is carried out, wherein a component A and a component B are adopted to form a skin-core structure continuous double-component composite filament after being subjected to melt spinning, the component A comprises a skin layer polymer and a functional medium with an electricity storage effect, and the component B comprises a core layer polymer and a functional medium with an antibacterial and mildew-proof effect; 2) a net is formed, and specifically the skin-core structure continuous two-component composite filament form thenet after being split; 3) reinforced forming is carried out, and specifically hot air is adopted for fusion, adhesion and curing; and 4) high voltage electrostatic treatment is carried out, and specifically the material is charged. According to the self-reinforced type double-component filter material, single-layer medium-efficiency and high-efficiency filter materials can achieve the same filtering efficiency as a composite filter material, meanwhile, the effects of being antibacterial, mildew-proof, high in stiffness and electrostatic adsorption are achieved, and the GB/T21551 antibacterialstandards are met.

The invention relates to the technical field of agricultural equipment, and discloses a fixing and automatic liquid dripping device for strut grafting of agricultural plants. The device includes a guide ring, wherein the guide ring includes a left ring body, a right ring body, first through slots and second through slots, an adjusting device includes a left adjusting part, a right adjusting part,fixing ears and threaded holes, and sponges are connected to the upper part and lower part of the inner wall of the guide ring; and adjusting sliders are connected to the interior of the liquid dripping device, and expansion metal blocks are connected to the outer side ends of the adjusting sliders. The expansion metal blocks which are arranged in chutes contract with cold at night so that a liquids in a hormone solution tank and a liquid in a growth solution tank can be introduced into a material storage cavity through a liquid outlet pipe; in the daytime, the expansion metal blocks expand soas to push the adjusting sliders to move outwards so that the chemical liquid in the material storage cavity can be introduced into a plant-grafted position through the liquid outlet pipe; and through the structure, the problem can be solved that an existing agricultural plant grafting device has no regular transportation of the chemical liquid and a low utilization rate of the chemical liquid.

The invention relates to a production method of superfine polypropylene composite fully-drawn wallpaper fiber. The method is characterized in comprising the following steps of: (1) melting polypropylene grain under high temperature, wherein the draw ratio of a spray head is 30-40; (2) cooling by means of lateral air blowing, wherein the air quantity is 750-850NM3/chroneme, the wind speed is 0.1-0.3m/s, and the wind temperature is 12-16 DEG C; (3) winding after oiling through a lower wire guide pan, an upper wire guide pan and a friction roller, wherein the winding speed of a spinning wind is 850-950m/min, and winding to be a winding spindle; (4) shaping in a drawing way: statically balancing the winding spindle for 4-6h, and shaping in a drawing way through a first heat pan, a contact type heat pan, a second heating pan and a cold pan, wherein the drawing multiple is 4-6 times, the feeding speed is 40-50m/min, and the winding speed of the winding spindle is 180-220m/min; and (5) cutting off and bagging. The preparation method effectively overcomes the rigidity of the normal polypropylene filament yarn, leads the polypropylene filament yarn to have good rebound resilience and soft handle feel, and leads each performance index of the product to meet the requirement of the material of the wallpaper.

The invention discloses a glass-reinforced-plastic filter element framework. The glass-reinforced-plastic filter element framework is formed through integral curing of glass fiber curing ribs in continuously staggered arrangement. A preparation method of the glass-reinforced-plastic filter element framework is characterized by including, step 1, soaking glass fiber filaments in resin, and formingfiber glass strips after gathering; step 2, winding the glass fiber strips infused with the resin around a mold to form the glass-reinforced-plastic filter element framework, wherein the glass fiber strips are arrangedin a staggered mode and are provided with ports; step 3, curing the meshed glass-reinforced-plastic filter element framework; step 4, performing de-molding. The glass-reinforced-plastic filter element framework has the advantages that the glass-reinforced-plastic filter element framework is convenient to process due to integral forming; glass fibers are arranged in the frameworkcontinuously, and the strength of the framework is improved greatly; no waste materials are generated; through continuity of the glass fibers, forming area of air holes can be increased, and accordingly, transparency is improved.

The invention belongs to the technical field of testing machines, and particularly relates to a cover plate testing machine which comprises a machine cabinet and a rotating device. The machine cabinetcomprises a cabinet body and a workbench arranged on the cabinet body, and a feeding station, a color code detection station, an air tightness detection station, an air permeability detection station, a conductive high-voltage detection station and a discharging station are sequentially distributed on the workbench in the circumferential direction, and a feeding device, a color code detection device, an air tightness detection device, an air permeability detection device, a conductive high-voltage detection device and a discharging device are respectively arranged. The rotating device comprises a rotary disc located above the workbench and a power device driving the rotary disc to rotate, the rotary disc is provided with a plurality of clamps used for containing cover plates to be detected, and each clamp sequentially enters various stations from the feeding station along with rotation of the rotary disc. The cover plate performance testing efficiency is high, and meanwhile, the working intensity of testing personnel, the production cost of the cover plates and the risk of missing detection and error detection are reduced.

The invention relates to the technical field of film sticking, in particular to an intelligent sticking film and a production process. Digital smart stickers include a release paper layer, glue layer, and PVC film layer set from bottom to top. The release paper layer, glue layer, and PVC film layer are all equipped with air guide grooves with the same embossed structure. The present invention made in the above manner can be applied to places such as painted walls, smooth wallpapers, smooth wooden surfaces, metal surfaces, glass surfaces, plastic surfaces, ceramic tile surfaces, etc. It has a wide range of applications and has There are no bubbles in the pasting, no residual glue when removed, the protection of the pasting surface from damage and the significant advantages of being able to be used repeatedly for a long time.