92results about How to "Reduce barrier effect" patented technology

Filter pipette tip with a small tube with a relatively large aperture at one end for attaching to a pipette, a relatively small aperture at the other end for the passage of liquid and a through-channel between the large aperture and the small aperture and a porous filter arranged in the through-channel, filling up a portion of the through-channel and comprising at least two layers arranged in series in the direction of the through-channel of which a fine-pore layer has a pore size of a maximum of approximately 20 μm and a coarse-pore layer a pore size of approximately 20 to 50 μm, the two layers having different pore sizes.

The invention relates to the technical field of tobacco manufacturing, in particular to a composite cigarette filter tip capable of improving mouthfeel of a novel cigarette and an application thereof.The composite cigarette filter tip capable of improving mouthfeel of the novel cigarette is obtained by composition of at least one solid section and at least one cigarette tow section. One or multiple hole channels are arranged in the solid section. As for a novel cigarette product, a tobacco section does not burn and generates smoke by depending on heat sources and other effects. The heating temperature is far lower than the burning temperature of a conventional cigarette. Hole channels arranged in the solid section help minimize the obstruction and interception effects of the filter tip upon smoke, reduce the loss of smoke in the filter tip and improve smoke concentration. Additionally, the hole channels in the solid section are filled with fragrant particles or coated with fragrant layers. When a user smokes the novel cigarette, the cigarette filter tip draws close to the tobacco section so that temperature goes high. Therefore, fragrant components are released at high temperatureto increase aroma concentration and enrich smoke. As a result, the mouthfeel of the novel cigarette is effectively improved.

The invention discloses a combined wastewater treatment method through visible light catalysis and immobilized microorganisms. The combined wastewater treatment method comprises the following steps: treating wastewater through photocatalytic degradation; after photocatalytic degradation, flowing into an immobilized microorganism fluidized bed for subsequent biochemical treatment; further degrading and removing pollutants from wastewater; repeatedly performing combined treatment of the photocatalytic degradation and the biochemical treatment of the immobilized microorganism fluidized bed on the biochemically treated wastewater to realize the circulating and deep wastewater treatment for several times; finally, enabling the treated wastewater to reach recycle standards. The invention further provides a combined reactor for combined wastewater treatment through the visible light catalysis and the immobilized microorganisms. A swash-plate photocatalytic reactor and a swash-plate immobilized microorganism fluidized bed are arranged inside a reaction chamber of the combined reactor. The photocatalytic degradation under the visible light condition is combined with the immobilized microorganism fluidized bed, so that the operation is simple, the treatment efficiency of washing and dyeing wastewater is high, the cost is low, and the combined wastewater treatment method and the combined reactor are applicable to industrial production.

A multilayer thermal protection system includes a metallic substrate; a first ceramic layer; a bond coat layer attaching the first ceramic layer to the metallic substrate, wherein the first ceramic layer is applied by plasma spraying; at least one second ceramic layer attached to the first ceramic layer, wherein the at least one second ceramic layer includes monolithic ceramic elements adhesively attached to the first ceramic layer; and a ceramic adhesive layer attaching the at least one second ceramic layer to the first ceramic layer.

The invention relates to a preservation-resisting energy bar which is prepared from the following raw materials in parts by weight: 1000-5000 parts of protein powder, 1500-3500 parts of syrupy, 500-1500 parts of a water-retaining agent, 200-1000 parts of lipid, 500-1000 parts of carbohydrate, 500-2000 parts of a cocoa butter or cocoa butter substitute product and 50-150 parts of pure water. The energy bar made by using the formula and the method provided by the invention is fine and smooth in taste, fragrant and sweet in flavor, convenient to carry over and unlikely to deteriorate and is particularly applicable to special purposes such as long-term wild sports and military training as certain moisture and soft taste are still maintained after being preserved for a long time.

The invention relates to a rectification pool type fishway and a flow state control method. The rectification pool type fishway comprises a plurality of continuous chambers which are raised in a ladder mode, and a rectification board provided with a plurality of flow holes arranged above and below and left and right is arranged between every two adjacent chambers. The fishway suitable for fishes having small sizes and poor swimming capability is a pool type fishway making use of the hydraulics rectification and energy dissipation principle of the rectification boards, the rectification boards can play an obvious role in energy dissipation between the chambers, the definite water flow direction can be formed while energy dissipation is carried out, and therefore the fishes can go upstream in the definite direction when swimming in the fishway and cannot get lost or be trapped in the fishway. The fishway reduces obstruction influence of hydraulic engineering construction on the fishes, fish passing efficiency of the fishway is improved, and the river ecological environment is protected or restored.

An aromatic polyester film, which comprises an aromatic polyester comprising 2,6-naphthalenedicarboxylic acid as the main dicarboxylic acid component and 1,3-propanediol as the main diol component and having a density of at least 1.310 g / cm3. A laminated film comprising another polyester layer can be formed from this aromatic polyester film. An aromatic polyester containing a small amount of a sulfonic acid phosphonium salt used as one of the aromatic polyesters forming this laminated film is excellent in electrostatic casting properties and resistance to the contamination of an electrostatic wire, and an aromatic polyester containing an inorganic anti-fungus agent is used for antifungal application.

The invention discloses a crack-resistant penetration-resistant agent for concrete and a preparation method of the crack-resistant penetration-resistant agent for the concrete. The crack-resistant penetration-resistant agent for the concrete is prepared from, by weight, 1-10% of modified sulfonated graphene, 1-15% of hydrophobic substance, 0.1-2% of emulgator A, 0.001-0.01% of defoaming agent and the balance water. The modified sulfonated graphene having excellent binding force with the concrete is prepared by modifying sulfonated graphene by amino silane; the crack-resistant penetration-resistant agent for the concrete, which can be stored stably, is prepared by compositing crack resistance, pore closure effects and hydrophobic substance waterproofness of two-dimensional sheet-like nano-materials of the modified sulfonated graphene. The crack-resistant penetration-resistant agent for the concrete has the advantages that the crack-resistant penetration-resistant agent is capable of improving resistance to fracture and crack and tensile strength of the concrete and preventing water and chloride salts to pass through capillary pores and enter the inside of the concrete, so that penetration resistance of the concrete is improved, and concrete durability is enhanced substantially.

The invention provides a fresh-keeping method for agricultural fruits and vegetables. The method comprises the following steps: a step 1: fresh fruits and vegetables are placed in an air-cooled cold storage and precooling is carried out for 12-24 hours, and the temperature of the cold storage is 1-3 DEG C; a step 2: precooled fruits and vegetables are placed in an enclosed environment for carrying out disinfection treatment; a step 3: disinfected fruits and vegetables are placed in a packaging container for carrying out modified atmosphere packaging; a step 4: packaged fruits and vegetables are placed in a cold storage for refrigeration. The fresh-keeping method can be used for effectively reducing aerobic respiration of fruits and vegetables, and maintaining storage of moisture in fruits and vegetables; propagation of microorganisms or bacteria is not generated in the storage environment, fresh-keeping time is prolonged, and shape, color or mouthfeel of fruits and vegetables are not changed.

Disclosed is a hot-gas-conducting housing element for a hot-gas-conducting housing of a gas turbine system encompassing a compressor, a turbine, and a turbine rotor. The hot gas-conducting housing element is embodied so as to surround a protective shaft jacket placed around the turbine rotor and conduct a hot gas to the turbine. The hot gas-conducting housing element comprises: —at least one hot gas inlet; —an opening facing the turbine; —a section for conducting the hot gas from the at least one hot gas inlet to the opening facing the turbine, said conducting section being provided with an inner housing hub which is configured so as to surround the protective surface facing the protective shaft jacket. Said rib extends in the circumferential direction, protrudes from the circumferential surface, and is disposed in the zone of the circumferential surface bordering the opening that faces the turbine. The rib and / or the inner housing hub is / are fitted with cooling fluid ducts.

The invention relates to a preparation method of an edible and nutrient composite fruit-vegetable coating preservative. The method comprises the following steps: adding pectin into deionized water so as to prepare a pectin solution; adding whey protein into the deionized water so as to prepare a whey protein solution; mixing the pectin solution with the whey protein solution; stirring and emulsifying; adding a plasticizer, tripotassium citrate anhydrous and calcium propionate; stirring; and performing vacuum degassing so as to prepare the composite coating preservative. The method is simple, strong in operability and low in cost; and the coating preservative is rich in nutrition. A preservative film prepared from the coating preservative is good in stability, high in strength and good in water resistance and has a good effect for inhibiting spoilage microorganisms so as to prolong the shelf life of fruits and vegetables.

A perfluoro-ion exchange membrane for electrolysis is prepared from the perfluoro-ion exchange resin containing sulfo and / or carboxy radicals through dissolving it in volatile solvent and program controlled coating of the solution on the template several times to form a multi-layer membrane containing the perfluoropolymer fibres as reinforcing material in at least one layer. Its advantages are low membrane resistance for high electric current efficiency and high mechanical strength and stability.

Filter pipette tip with a small tube with a relatively large aperture at one end for attaching to a pipette, a relatively small aperture at the other end for the passage of liquid and a through-channel between the large aperture and the small aperture and a porous filter arranged in the through-channel, filling up a portion of the through-channel and comprising at least two layers arranged in series in the direction of the through-channel of which a fine-pore layer has a pore size of a maximum of approximately 20 μm and a coarse-pore layer a pore size of approximately 20 to 50 μm, the two layers having different pore sizes.

The invention provides borate polymer@hexagonal boron nitride flame-retarding nanoparticles with core-shell structure as well as a preparation method and application. The preparation method comprisesthe following steps: firstly, reacting one or two polyamines containing elements including phosphorus, nitrogen and the like with 4-formylphenylboronic acid and 3,4-dihydroxy benzaldehyde respectivelyto prepare multi-arm phenylboronic acid and multi-arm o-dihydroxybenzene; secondly, dispersing hexagonal boron nitride to obtain a uniform hexagonal boron nitride dispersion solution; then adding themulti-arm phenylboronic acid into the dispersion solution; after uniformly dispersing, slowly adding the multi-arm o-dihydroxybenzene; reacting for a period of time at room temperature; and carryingout condensation on the multi-arm phenylboronic acid and the multi-arm o-dihydroxybenzene on the surface of hexagonal boron nitride to form one layer of a borate polymer, so as to obtain the borate polymer@hexagonal boron nitride flame-retarding nanoparticles. The borate polymer@hexagonal boron nitride flame-retarding nanoparticles are uniformly mixed with epoxy resin; and a proper amount of a curing agent is added and high-temperature curing is carried out to obtain an epoxy resin composite material containing the borate polymer@hexagonal boron nitride flame-retarding nanoparticles.

The invention belongs to the field of asphalt concrete pavements and relates to a composite asphalt cooling pavement top layer and a construction method thereof. The construction method comprises following steps: S1, a thermal-resistant asphalt mixture is spread on the top layer of a pavement and then rolled; S2, after the thermal-resistant asphalt mixture rolled in S1 is cured, the upper surface of the thermal-resistant asphalt mixture is coated with a coating; S3, after the thermal-resistant asphalt mixture and the coating are cured, the composite asphalt cooling pavement top layer is formed. Pavement ruts, the urban heat island effect and permafrost subgrade defects can be overcome.

The invention discloses a starch-modified polyvinylalcohol high-resistance degradable thin film and a preparing method. The starch-modified polyvinylalcohol high-resistance degradable thin film is prepared by smelting a polyvinylalcohol composition. The polyvinylalcohol composition is prepared from, by mass, 60-75 wt% of polyvinylalcohol, 10-20 wt% of starch modified with an oxidizing agent, 5-15 wt% of plant fibers, 1-5 wt% of natural polyphenol and 0-1 wt% of calcium oxide, wherein the mass sum of the components is 100%. By adding the starch modified with the oxidizing agent into the polyvinylalcohol base, the water resistance of the polyvinylalcohol thin film is improved while the mechanical performance of the polyvinylalcohol thin film is improved. By adding the plant fibers, the mechanical performance of the polyvinylalcohol thin film is further improved. By adding the natural polyphenol / calcium oxide composite modifying agent and the starch, the melting point of the polyvinylalcohol thin film is lowered, the melting processing window of polyvinylalcohol is enlarged, a plasticizer does not need to be added, and the reduction, caused by the plasticizer, of the mechanical performance and barrier performance of the polyvinylalcohol thin film is relieved. The prepared starch-modified polyvinylalcohol high-resistance degradable thin film is excellent in comprehensive performance, and the application range is widened.

The invention relates to a tidal river reach fishway inlet design method and a fishway inlet. The method comprises the steps of: typical tide process selection; tide level calculation; fishway inlet section hydraulic characteristic calculation; fishway inlet arrangement and water level design; and fishway inlet parameter determination. The method builds a flux and reflux model of a tidal river reach by tide current principles and tidal river reach hydraulic characteristics, calculates various types of tidal ranges and the tide level change conditions through the model, calculates and determines optimal fishway inlet positions of various tide levels to adapt to the flows, the flowing directions and the water level changes of different tide currents through the fishway inlet section hydraulic characteristics, improves the fishway fish passing efficiency, reduces the influence on fish stop by the hydraulic engineering construction, and achieves important significance on protection or repair of the river ecological environment.

The invention belongs to the technical field of materials, and relates to a polycarbonate extrusion foaming composite sheet material and a preparation method thereof. The sheet material is composed of a surface layer and a core layer, wherein the surface layer occupies 5%-20% of a whole thickness of the sheet material; the core layer occupies 80%-95% of the whole thickness of the sheet material; the surface layer is manufactured by the following components of, by weight, 99%-99.5% of poly(ethylene terephthalate)-1,4-dimethyl cyclohexane, 0.1-0.5% of a first lubricant and 0.1%-0.5% of a first antioxidant; and the core layer is manufactured by the following components of, by weight, 50%-95% of polycarbonate, 0-30% of a glass fiber, 0.1%-1% of foaming powder, 0.1%-1% of a foaming regulator, 0.1%-1% of a flame retardant, 3%-10% of a toughening agent, 0.1%-0.5% of a wetting agent, 0.2%-1% of a second lubricant and 0.5%-1% of a second antioxidant.

The invention discloses a polymer nano-modified nylon 11 composite material and a preparation method thereof. The polymer nano-modified nylon 11 composite material comprises the following components in parts by weight: 50-80 parts of nylon 11, 20-30 parts of starch, 20-40 parts of polylactic acid, 5-10 parts of methyl methacrylate, 1-6 parts of maleic anhydride, 1-3 parts of oxalic acid, 1-4 parts of triphenyl phosphite, 2-8 parts of nanosilicon dioxide, 2-6 parts of nano calcium carbonate, 0.1-0.8 part of stearate, 0.1-0.6 part of borate, 1-5 parts of trimethyl chloro propane trimethyl acrylate and 1-3 parts of an antioxidant. The preparation process is simple, feasible, and easy to process; and the prepared polymer nano-modified nylon 11 composite material has the advantages of a polymer, a nano material and nylon 11, and is good in low-temperature toughness, good in barrier property, low in cost and suitable for the industries such as automobiles, aviation and electrons.

The present invention discloses a process for applying a polymeric coating that provides an efficient barrier effect to the migration of coloured compounds, namely polyphenols, from the cork stopper into a white alcoholic beverage. For this effect the process of the invention comprises the steps of: 1) depositing a polymeric film on cork stoppers to provide a non-cured polymeric coating on the stoppers; 2) gradual curing of the polymeric coating by applying a temperature variation rate in the range of about 3 DEG C / min to about 6 DEG C / min, in order to gradually raise the temperature from about 40 DEG C to about 110 DEG C; and 3) final curing of the polymeric coating at constant temperature in the range of about 70 DEG C to 120 DEG C for at least 5 minutes. The efficacy of this coating will make possible the implementation at industrial level of cork stoppers in the market of white alcoholic beverages.

The invention discloses a high-strength fire-resistant thermal insulation material. A preparation method of the high-strength fire-resistant thermal insulation material comprises the following steps: preparing a shaped product with the required size by using expanded vermiculite, clay, refractory cement and dextrin as initial materials and adding a waterproof agent and a binding agent in a mechanical pressing forming manner, wherein a nano-modification organic silicon rubber solution is used as the waterproof agent, and the binding agent is an inorganic binding agent, drying, carrying out heat preservation, and baking at a high temperature, thus obtaining the high-strength fire-resistant thermal insulation material. The high-strength fire-resistant thermal insulation material has the advantages of good structure and volume stability, high strength, low cost, simple process, convenience for construction and baking, environmental protection, safety and the like.

The invention discloses an edible nano coating preservative for fruits and vegetables. The edible nano coating preservative comprises the following components in percentage by mass: 40 to 60 weight percentage of a Pickering emulsion of hydrophobic nano plant glycogen; 0.3 to 0.7 weight percent of the antibacterial peptide Enterolysin A; 1 to 3 weight percentage of cinnamyl aldehyde; 4 to 6 weightpercent of chitosan; 2 to 4wt% of sorbitol; and remaining deionized water. Experiments prove that the Pickering emulsion of the hydrophobic nano plant glycogen prepared by the invention not only can prolong the efficacy of antibacterial components, but also can improve the antibacterial activity of the antibacterial components, so that the preservative effect of a coating preservative is greatly improved, and the spoilage of fruits and vegetables is delayed. The antibacterial peptide Enterolysin and cinnamyl aldehyde have a synergistic effect without antagonism when being used as antibacterialagents and embedded by the Pickering emulsion in a combined manner, so that the antibacterial effect can be improved, and the stability of the food preservative is enhanced.

The invention discloses a preparation method of an isotropic graphite material. The preparation method specifically comprises the following steps: doping mesocarbon microbeads with different particlesizes with chopped carbon fibers, carrying out liquid-phase oxidation treatment, carrying out compression molding by a secondary cold isostatic pressing method, and carrying out carbonization and graphitization. According to the invention, the problem of low yield caused by product cracking in the existing ink preparation technology taking the mesocarbon microbeads as a raw material is effectivelysolved, the bending strength of the graphite material is also improved, the compactness is improved, and the resistivity and the aperture ratio are reduced, so that the performance of the graphite material is improved.

The invention provides an antibacterial low-barrier melt-blown non-woven fabric which is prepared from modified polypropylene, glass fiber, and graphene oxide sol. The modified polypropylene is formedby polymerizing polypropylene and N-(3-aminopropyl) acrylamide monomer, and the chemical structure is shown as a formula I. A preparation method of the antibacterial low-barrier melt-blown non-wovenfabric is simple, and the prepared melt-blown non-woven fabric has good antibacterial performance and low barrier performance, when the prepared melt-blown non-woven fabric is used in a water purifier, chloride ions can be freed under the action of water, a good sterilization effect is achieved, and the material can be used repeatedly after chlorine bleaching again, so that the service life of thematerial is prolonged.

[Problem] To provide a polylactic acid bottle having a vacuum-evaporated film on the inner surface of the bottle wall, effectively preventing the thermal deformation of the bottle at the time of forming the film and exhibiting excellent barrier property against oxygen and water.[Means for Solution] A biodegradable resin bottle has a wall formed by a biodegradable resin and a vacuum-evaporated film on an inner surface of the wall by a plasma CVD method, and wherein said vapor-evaporated film exhibits hydrocarbon peaks stemming from CH, CH2 and CH3 in a region of a wave number of 3200 to 2600 cm−1 as measured by FT-IR, and per the sum of CH, CH2 and CH3 calculated from the hydrocarbon peaks, a CH2 ratio is not larger than 35% and a CH3 ratio is not smaller than 40%.

The invention belongs to the field of water conservancy projects and environmental protection projects, and relates to a tunnel type multi-outlet nature-like fish way. A fish way body is connected to a downstream riverbed and the water area of an upstream reservoir and is arranged in a mountain beside a power station plant; a fish way inlet of the fish way body is formed in the riverbed in the downstream direction of the power station plant, and two or more fish way outlets of the fish way body are formed in the reservoir in the upstream direction of the power station plant and are located at different heights. The tunnel type multi-outlet nature-like fish way can adapt to the geographical condition that riverbeds are narrow and mountains on the two sides of river ways are high and steep or the limiting condition that the water levels of reservoirs in the upstream direction fall or rise rapidly or water-passing water levels are large in amplitude, the shortcomings that the construction workload of fish ways is large, the design and construction difficulty is high and the cost is high are overcome, and the influence to the terrestrial organisms on the mountains on the two sides of the river ways is reduced as much as possible.

The invention provides a snap-action temperature controller with the high sensitivity. The snap-action temperature controller comprises a shell, a rivet, a movable contact spring, a fixed connecting board, a movable contact, a fixed contact, a ceramic rod, a guiding base, a duplex-metal temperature sensing sheet and a sealing cover. The movable contact spring is fixed to an inner cavity of the shell through the rivet; the movable contact is fixed to the movable end of the movable contact spring; the fixed contact is fixed to the inner cavity of the shell and faces the movable contact; a guide base is installed at the top of the shell; the duplex-metal temperature sensing sheet is provided with a center portion, at least three fixing feet are arranged on the periphery of the center portion, and the duplex-metal temperature sensing sheet is fixed to the portion between the guide base and the sealing cover through the fixing feet; the ceramic rod penetrates through a guide hole of the guide base and abuts against the portion between the movable contact spring and the duplex-metal temperature sensing sheet; the guide base and the shell are packaged together through the sealing cover. The snap-action temperature controller with the high sensitivity overcomes the shortages that a traditional snap-action temperature controller with a duplex metal sheet of a circular shape, a butterfly shape and the like is slow in action and long in thermal reaction time are overcome, the reaction speed and the sensitivity of temperature sensing action of the temperature controller are effectively improved, and temperature control of the temperature controller is made to be more accurate, safe and reliable.

The invention discloses a sterile vacuum packing technique for infant clothing. The technique comprises the following steps that (1) the infant clothing is washed with water; (2) the infant clothing washed with the water is subjected to spin-drying and drying; (3) the dried infant clothing is subjected to ozone sterilization; (4) the sterilized infant clothing is subjected to high temperature disinfection, and the temperature of high temperature disinfection is 110 DEG C; and (5) the disinfected infant clothing is subjected to vacuumizing packing. According to the sterile vacuum packing technique for the infant clothing, the contents of impurities, bacteria and the like in the infant clothing can be effectively reduced, so that the wearing health of the infant clothing is improved.

The invention relates to a high-resistance high-speed auto-inflation food packaging film and a production process thereof. The packaging film is formed by compounding an aluminum-plated PE film and aPET printing film in a dry mode. The aluminum-plated PE film comprises a corona layer, a middle layer and a heat seal layer. The corona layer comprises linear low density polyethylene and polycycloolefin according to the mass ratio of (83-87):(13-17). The middle layer comprises linear low density polyethylene, low density polyethylene and high density polyethylene according to the mass ratio of (48-52):(23-27):(23-27). The heat seal layer comprises low density polyethylene, an olefin plastic body, linear low density polyethylene, silicone and a processing agent according to the mass ratio of (48-52):(23-27):(23-27):(1.3-1.7):(0.1-0.3). The packaging film is suitable for meeting the requirements of a high-speed packaging device and has high resistance, low heat seal temperature, high heat seal strength, high in pressure resistance and low in broken package air leakage rate.

The invention relates to a barrier coating film without a prime coat and a preparation method thereof. By improving barrier coating liquid, a PVOH product having better barrier performance is added inPVDC latex, barrier performance (less than or equal to 2cc / m<2>, 24 hr) is increased, a polymerization technology is adjusted, the barrier coating film without the prime coat is finally prepared, under prerequisite that obstruct effect is good, a film prime coating process is reduced, an organic solvent generated during production can be avoided, and residual risk of a product solvent cannot be generated.