113results about How to "Large cavity" patented technology

A tactical shirt helps reduce the weight and bulk of items normally carried on a police officer's duty belt. A hidden front pocket extends essentially from the shirt's placket to the side seam of the shirt, providing a large cavity with an ample vertical opening line that is very conveniently used for a handgun, baton, handcuffs, mace, knife and/or spare magazines. No seam that would reveal the hidden pocket is readily visible, and the pocket's opening seam extends above and below the pocket opening and appears as a design feature of the shirt. With a fabric weight of at least about five ounces per square yard, a considerable weight and bulk of weapons can be hidden in the pocket without being noticeable to others.

A method of using a bagged power generation system comprising windbags and water-bags for harnessing wind and water power to produce electricity to meet the escalating energy needs of mankind. Windbags integrated with aerodynamically shaped inflatable bodies filled with lighter-than-air gas: HAV, UAV, airplanes; enabling the apparatus to attain high altitude to capture and entrap high velocity wind. Water-bags integrated with hydrodynamic shaped bodies HUV, UUV, Submarine-boats; enabling the apparatus to dive, capture and entrap swift moving tidal-currents. Attached tether-lines pulling on the rotating reel-drums and generators to produce electricity. Active control surfaces, turbo-fans, propellers provide precision control of the apparatus. A system configured to maximize fluids capture, retention and optimized extraction of its kinetic energy. An extremely scalable and environmentally friendly method, system, apparatus, equipment and techniques configured to produce renewable green energy with high productivity and efficiency.

The invention discloses a method for preparing a porous polymer micro needle by using a template method and an application thereof. The method comprises the following steps of: (1) dissolving a polymer and a template agent in a solvent to prepare a polymer solution; (2) filling the polymer solution into a micro needle mould; (3) removing the solvent in the obtained micro needle mould to obtain a solid micro needle; (4) removing the template agent in the obtained solid micro needle to obtain the porous polymer micro needle. By improving the overall process flow design of the preparation method,the method can solve the technical problems of a complex preparation process, harsh conditions, a complicated process, high price, difficult control of the pore structure and size, difficult large-scale production and application and the like of the porous polymer micro needle, the obtained porous polymer micro needle can be used for tissue fluid extraction and transdermal administration, such asskin tissue fluid and blood extraction and transdermal administration of proteins, polypeptides and small molecular drugs in cosmetic, hair growth, immunity, treatment and other applications.

The invention relates to a preparation method of a double-shell core-shell structured composite nanoparticle with a cavity, belonging to the technical field of advanced composite nanoparticles. The preparation method comprises the steps of coating a layer of silicon dioxide on an outer layer of a ferroferric oxide nanoparticle, and reacting after modifying by using a silane coupling agent to obtain a polymer-coated composite particle; then, sequentially coating silicon dioxide and titanium dioxide on the outer layer of the composite particle; finally, removing the two silicon dioxide coating layers to obtain the double-shell core-shell structured composite nanoparticle with the cavity. The composite nanoparticle has a core made of the ferroferric oxide nanoparticle, a middle shell made of polymethylacrylic acid and an outmost-layer shell made of titanium dioxide, wherein the cavity exists among the middle shell, the core and the outmost-layer shell. The material obtained by the invention is novel in structure and capable of adsorbing heavy metal ions and catalytically degrading organic pollutants under the excitation of ultraviolet rays; in addition, the composite nanoparticle can be separated and recovered under the action of an external magnetic field.

The invention relates to a preparation method for a manganese dioxide hollow sphere, which is as follows: manganese sulfate, potassium permanganate and soluble ferric salt are weighed and added into a hydrothermal reactor; deionized water is added till manganese sulfate, potassium permanganate and soluble ferric salt are dissolved; the mixed liquor is fully mixed and added with sulfuric acid; the molar ratio of manganese sulfate, potassium permanganate, soluble ferric salt and sulfuric acid are 1:6:0.04-1:36.8; the hydrothermal reactor is put in a baking oven, hydrothermally reacted for 10 to 1440 minutes in the constant temperature of 130 to 180 DEG C and naturally cools to the room temperature; the prepared product is washed for five times by deionized water, and dried in the 50 DEG C of the air of the drying oven to prepare manganese dioxide hollow sphere. The prepared manganese dioxide hollow sphere is tested by an x-ray diffraction instrument, a scanning electron microscope and a transmission electron microscope, has spherical appearance, big cavity, about 3mu m p grain size distribution, big specific surface area, and can be used as electrode material and battery material of a super capacitor.

The invention provides a bonding-based thin film bulk acoustic wave resonator and a processing method thereof, wherein, the bonding-based thin film bulk acoustic wave resonator comprises a substrate,a first metal column and a second metal column arranged on the substrate; and a piezoelectric film stacking structure disposed between the first metal column and the second metal column, wherein the piezoelectric thin film stack structure includes a first electrode, a piezoelectric layer and a second electrode disposed between the first electrode and the second electrode and disposed opposite to each other, the first electrode is further electrically connected to the first metal pillar and the second electrode is electrically connected to the second metal pillar. The thin film bulk acoustic wave resonator based on bonding can ensure the cleanness of the sacrificial layer material in the cavity and improve the performance of the thin film bulk acoustic wave resonator based on bonding.

The invention relates to a molded block (20) of concrete. The molded block (20) is suitable for building a supporting wall (21) which is inclined to the vertical against an earth backfill (22) and in which the individual molded blocks (20) are arranged one above the other in layers.

The molded block (20) is formed as a cavity block in such a way that, with the molded blocks (20) arranged offset in relation to one another in layers in a supporting wall (21), the load-transferring regions of the molded blocks (20) arranged above or below one another are arranged essentially in line in the load-transferring direction.

This makes it possible for supporting walls to be built from molded blocks with considerably larger apertures than in the prior art, with the same or greater load-bearing capacity.

The invention provides a hollow carbon-sulfur positive electrode composite material coated with flaky manganese dioxide and preparation and application thereof. The carbon and sulfur composite material coated with the manganese dioxide has a carbon content of 10% to 30% and a manganese dioxide content of 10% to 30%, a sulfur content of 40% to 80%, wherein the manganese dioxide is a sheet-like structure and is tightly wrapped on the outer surface of the hollow carbon-sulfur composite material, and the sulfur is mainly distributed in hollow carbon ball cavities and carbon layer mesopores. Hollowcarbon balls with mesoporous structures are prepared with a one-step method with tetraethyl orthosilicate as a silicon source and resorcinol and formaldehyde as carbon sources, the method is simple,the process is controllable, and the carbon balls are uniform in particle size. The manganese dioxide of the sheet-like structure is subjected to thermal processing and is coated, the hollow carbon balls provide sufficient space for carrying the sulfur, the rich point-to-point contact between the carbon balls can ensure rapid electron transfer, sheet-like manganese dioxide coating layers at the surfaces of the carbon balls have strong chemical adsorption on polysulfides, the 'shuttle effect' is effectively alleviated, and the cycle stability and rate performance of the battery are improved.

Multilayer breathable barrier films are provided. The films contain one or more layers of polymers without fillers in combination with at least two or more microporous breathable layers. The barrier layer provides a viral and alcohol barrier that can effectively allow moisture vapor to pass.

The present invention discloses a novel plant wall, which comprises bricks and is characterized in that the brick adopts an inorganic building material or plastic and is a hollow brick made through a mold and provided with at least a hole or at least a concave groove, the hollow bricks with the approximately-same sizes are adhered and connected through cement or are subjected to mortise and tenon connection overlaying building to form the hollow wall with planting holes, the upper layer hollow bricks and the lower layer hollow bricks in the hollow wall with the planting holes are dislocated, soft body pockets or soft body bags filled/wrapped with planting mediums and planted plants are placed in the planting holes, and are provided with plant growth openings at the planted plant positions, and the opening is small and the internal is large or the pockets or bags are inclined outward.

The invention discloses polyethylene glycol dendritic polymers and a preparation method thereof. The polyethylene glycol dendritic polymers are prepared with organic diamine as an initiation core, polyethylene glycol and acrylate as repeated branching units, and double bond or primary amine as a surface functional group. The invention also prepares different algebraic polyethylene glycol dendritic polymers by an enzyme-catalyzed transesterification and then a Michael addition reaction with polyethylene glycol, acrylate and primary amine as starting monomers. The prepared polyethylene glycol dendritic polymers have large cavity inside the molecules which can imbed other small molecules such as drug molecules and the like, and a large number of functional groups on the molecular surface canreact with other molecules. The reaction raw materials are safe and non-toxic, and can be excluded from the human bodies quickly. The preparation method adopting the enzyme-catalyzed transesterification and the Michael addition reaction is mild in reaction conditions, green and environment-friendly, low in cost and easy to realize industrialization.

The invention discloses a fluorenyl triangular-prism-shaped organic cage compound, and a preparation method and an application of the compound. The fluorenyl triangular-prism-shaped organic cage compound has a structure represented as a formula I shown in the description. The preparation method comprises performing cyclization on fluorenyl dimeric tertiary alcohol under a Friedel-Crafts reaction which is catalyzed by an acid to obtain the fluorenyl triangular-prism-shaped organic cage compound. The fluorenyl triangular-prism-shape organic molecular cage has a large cavity and specific surface area, has good solubility, good heat, electrochemistry and optics stability, and thus has wide application prospects in the fields of organic light emitting devices, molecular recognition, porous materials, supramolecular chemistry and the like.

The invention relates to a coating die for the side surface of a medicine column of a solid propellant and a coating method, in particular to the die for coating the side surface of the medicine column of the solid propellant and the medicine column coating method. More specifically, the coating die comprises a base, a conical groove is formed in the inner surface of the base, and a sealing ring is arranged between the base and a coating cylinder. By means of the method adopting the die for coating the medicine column, the process that a medicine column is inserted in die slurry in the prior art is cancelled, namely, the medicine column is put into the die firstly, then coating layer slurry is added, and the coated medicine column is obtained after vacuumizing for degassing, degassing forpressure releasing, curing for demoulding, and shaping.

A polymeric foam article has at least two thermoplastic polymer foams in layered orientation, each of the thermoplastic polymer foams having an adjoining surface that contains a polymer skin, a thickness dimension perpendicular to the adjoining surface, perforations that are less than one millimeter in diameter that penetrate through the adjoining surface to a depth less than the thickness dimension of the foam, where the adjoining surface of one thermoplastic polymer foam is adjacent and adhered to the adjoining surface of another thermoplastic polymer foam with an adhesive thereby affixing the thermoplastic polymer foams to one another.

The invention relates to a microelectromechanical sound detection apparatus, comprising a substrate, a housing, at least one opening for sound to pass through and a microelectromechanical element for picking up sound, wherein the housing is produced by means of moulding such as to provide a front volume and a rear volume for sound detection by means of the microelectromechanical element as cavities. The invention likewise relates to a method for producing a microelectromechanical sound detection apparatus and also to uses for a sound detection apparatus.

The invention discloses a method for preparing a porous polymer microneedle based on a phase separation technology and application of the method. The method comprises the following steps that 1, a polymer is dissolved into a solvent A to obtain a polymer solution; 2, the polymer solution is put into a microneedle mould; 3, the microneedle mould is placed in a poor solvent B, so that phase separation of the polymer in the microneedle mould is facilitated; 4, the poor solvent B is removed, and then the porous polymer microneedle can be obtained. Through the simple and mild phase separation technology, the porous polymer microneedles can be prepared on a large scale, and therefore, the technical problems can be solved that the preparation process of the porous polymer microneedle is complicated, the conditions are harsh, the technology is tedious, the price is high, the pore structure, the size and the distribution are difficult to control, and it is difficult for large-scale production and application. The prepared porous polymer microneedle can be used for interstitial fluid extraction and transdermal drug delivery.

An applicator unit for applying slurry fertilizer beneath the soil with reduced soil displacement includes a spring-cushioned main mounting shank and a forward spring-biased coulter. A narrow applicator shank, mounted to the main mounting shank just above the surface of the soil, is oriented generally upright and includes a leading nose portion having a small low angle forward protruding tip and a tapered leading edge for forming a furrow without tilling the soil. The furrow is formed in four stages: by the small low angle forward protruding tip, the upright tapered leading edge of the sweep shank, by a bulge on each side of the casting near the soil surface, a slurry tube widens the slot further, facilitating the delivery of the slurry in the vertical slot. Swept back wings gently lift the soil to allow horizontal distribution of the slurry.

The equipment includes parts: emission filter, its input connected to cabinet interface of the equipment, and its output connected to antenna interface; reception filter at antenna end together with emission filter constitute duplexer at antenna end, its input connected to antenna interface, and its output connected to power divider; reception filter at cabinet end together with emission filter constitute duplexer at cabinet end, its input connected to interface for receiving input, and its output connected to the cabinet interface; power divider divides output signal of reception filter at antenna end into two routes of carrying same signal, its input connected to the reception filter at antenna end, and its two outputs connected to output interface of diversity reception, and of main reception. The invention also discloses common antenna feeder lines of base station. Features are: small influence on performance of original base station, reliable and low coat, and good generality.

The invention provides an air bag type intermediate supporting device for a transmission shaft of a commercial vehicle, an assembling method and a using method. The air bag type intermediate supporting device comprises a rim type bearing seat. The rim type bearing seat is provided with an inner ring and an outer ring which are connected with each other; a bearing is pressed on the periphery of theinner ring; a clamping groove is formed between the outer edge of the inner ring and the outer ring; an elastic check ring is installed in the clamping groove and used for axially fixing the bearing;an annular air bag is arranged outside the outer ring; the inner side face of the annular air bag abuts against the outer ring face, and the outer side face of the annular air bag is connected with an annular combined support; and the annular combined bracket is connected with the frame. The radial rigidity of the supporting assembly is adjusted by adjusting the air pressure of the air bag, so the inherent frequency of the supporting assembly is adjusted, the resonance frequency is avoided or disturbed, and the driving comfort of the whole vehicle is improved. Meanwhile, the problem of heat dissipation of vulcanized rubber supporting is effectively solved, and the service life of the bearing is prolonged. The device is simple in structure, simple and convenient in assembly process and reliable in performance.

The invention relates to the technical field of agricultural fertilizers, in particular to a soil remedying fertilizer and a preparation method thereof. The soil remedying fertilizer provided by the invention comprises the following raw materials in parts by weight: straw powder, urea, thoroughly decomposed sawdust, modified cyclodextrin, humic acid and modified watermelon peel. The soil remedyingfertilizer provided by the invention is simple in components and rich in nutrition, and can effectively reduce the contents of heavy metals and organic pollutants in soil.

The invention discloses a method for preparing light floating particles which are loaded with hollow inorganic particles on the surfaces and used for scavenging water surface floating oil. The inorganic light particles are taken as carriers, polystyrene is taken as an intermediate substance, polystyrene/titanium dioxide composite particles are synthesized on the surfaces of the light inorganic particles in a modification manner, polystyrene is removed by roasting, and inorganic carrier/hollow titanium dioxide composite particles are obtained. Titanium dioxide microspheres are stacked densely in a multi-layer manner on the surfaces of the carriers, larger cavities are formed inside the microspheres, and the microspheres have higher oil fouling bearing capacity. After surface oleophylic modification, the floating oil scavenging agent can actively absorb the floating oil on the water surface, the particles absorbing oil gather into a cluster, and fishing is convenient. Because the carrier particles and the hollow titanium dioxide all have acid-base resistance and high temperature resistance, the scavenging agent is suitable for the use in different oil fouling leakage environments; the particles which absorb oil and are recycled can be reused through simple roasting treatment.

A self-absorption type environmental-protection sound-absorption decorating plate comprises a hollow pipe, a hollow elbow bend, a hollow connector, an evenness regulating nut and a metal jump ring, wherein the hollow elbow bend and the hollow connector are provided with a movable regulation hole and a socket port, the evenness regulating nut is provided with a nut and a double-screw bolt, a brute force magnet is imbedded in the nut, and the metal jump ring is provided with a metal spring ring and a metal spring steel wire. The spring ring of the metal jump ring is sleeved in the evenness regulating nut to enable the evenness regulating nut to have a self-absorption type buckle function, an evenness regulating function and a magnet absorption function, then the evenness regulating nut is connected with the hollow elbow bend and the hollow connector to form a multifunctional right-angle connection system and a multifunctional bending connection system, the multifunctional right-angle connection system and the multifunctional bending connection system are respectively connected with the hollow pipe to form a frame, sound-absorption materials are filled in the frame, decorating fabrics are wrapped on the surface of the frame, and the self-absorption type environmental-protection sound-absorption decorating plate with the self-absorption type buckle function, evenness regulating function, the magnet absorption function and translation adjustment function towards each direction is finally formed.