41results about How to "Limit expansion" patented technology

The invention relates to the technical field of display, in particular to a flexible display panel and a preparation method thereof. The problems of inaccurate alignment of COF bonding and FOF bondingand low yield caused by the size inhomogeneity of flexible substrate are solved. An embodiment of the present invention provides a method for manufacturing a flexible display panel, the flexible display panel comprising a display region and a bonding region, and the bonding region comprises at least two COF bonding regions. The method comprises the steps of: preparing a flexible substrate; Forming pixel units arranged in an array form on a surface of a corresponding display region of the flexible substrate; Cutting a position between at least two adjacent COF bonding regions to form a strip-like crack or hollow area, separating the at least two adjacent COF bonding regions and separating the at least two adjacent COF bonding regions structurally; affixing a back film and cutting off the back film at a position corresponding to the strip-shaped crack or the hollow area; Bonding of COF and FOF. The present invention is used to preparing the flexible display panel.

The invention discloses a composition based on stem cells and application thereof in preparing preparation for the coronary heart disease. The composition based on the stem cells includes the stem cells prepared through an optimizing method and cell preserving liquid serving as a solvent. Firstly, proper stem cells are selected; secondly, the selected stem cells are further processed through the optimizing method; lastly, the stem cells are collected and resuspended in the cell preserving liquid. A various cell implanting method is adopted in the application of the composition based on the stem cells in preparing the preparation for the coronary heart disease, the time nodes before an operation, during the operation and after the operation are combined, and it is ensured that the transplanted stem cells can give the full play. The optimizing method is used for preparing the stem cells and the stem cell composition in the cell preserving liquid, the ventricle function can be extremely obviously enhanced after cell transplantation, and the left ventricle reconstitution is restrained. The optimal cell composition is provided for treating the coronary heart disease, the source is wide, preparation is simple, toxic and side effects are avoided, and the transplanting effect is good.

The invention discloses a preparation method of a baloxavir key intermediate and the intermediate thereof. The method includes subjecting 3,4-difluoro-2-methyl benzaldehyde shown as a formula (I) as araw material to a bromination reaction to obtain 3,4-difluoro-2-bromomethyl benzaldehyde shown in a formula (II), carrying out a substitution reaction to obtain 3,4-difluoro-2-(((2-bromophenyl) thio)methyl)-benzaldehyde shown in a formula (III), and finally, carrying out a nucleophilic addition reaction to synthesize a target product, namely 7,8-difluorodibenzo[b, e]thiepin-11(6H)-ol shown in aformula (IV). The specific reaction process is shown in the specification. According to the method, 2-bromothiophenol is used for replacing foul and virulent thiophenol, the reaction steps are reducedto three steps, and the preparation method is high in yield, low in cost, environmentally friendly and easy to operate.

The invention provides a nylon sheath material for wires and cables. The nylon sheath material comprises the following components in parts by weight: 100 parts of nylon resin, 10-50 parts of a modifier, 0.6-2 parts of a lubricant, and 1.2-2.0 parts of an anti-oxidant. The invention further provides a preparation method of the nylon sheath material for wires and cables. The nylon sheath material for wires and cables has good toughness and abrasion resistance, especially the material has good hardness and excellent chemical attack resistance, so that the material can be applied to building lines and sheathes of wires and cables with requirements for preventing termites and mice, and can be used for expanding application ranges of the nylon cable material on the market.

The invention discloses a cement admixture for inhibiting alkali-aggregate reaction. The cement admixture comprises the following components in parts by weight: 30-40 parts of waste glass powder, 15-20 parts of furnace slag, 15-20 parts of mineral slag, 3 parts of wool, 0.3-0.5 part of gelatin, 3-5 parts of alkyl benzene sulfonate sulfate and 10-22 parts of lithium sulfate. The method comprises the following steps: cleaning, airing and grinding waste glass bottles, mixing the waste glass bottles with furnace slag and mineral slag, and performing ball milling to obtain a waste mixture; and uniformly mixing the waste mixture with wool, alkylbenzene sulfonate sulfate, gelatin and lithium sulfate to obtain the cement admixture capable of inhibiting the alkali-aggregate reaction. The preparation process is simple, the use is convenient, the inhibition effect on the alkali aggregate reaction is obvious, the green and environment-friendly effects are realized, and the prepared concrete has excellent performance.

The invention relates to the technical field of pipelines, in particular to a double-layer expansion pipe which comprises a hard outer pipe sleeve and an inner layer pipe formed by compounding multiple layers. The two ends of the inner-layer pipe are each provided with a baffle ring, and the outer pipe sleeve is arranged at the exterior of the the inner layer pipe, and located between the two baffle rings. The outer pipe sleeve comprises an elastic connecting piece, a sliding sleeve and two symmetrical half sleeves. The double-layer expansion pipe has the beneficial effects that the outer pipe sleeve has high corrosion resistance and hardness, the inner layer pipe can be prevented from being corroded, and external pressure can be evenly applied to the surface of the inner layer pipe; the situation that the inner layer pipe is broken due to inconsistent internal and external pressure intensity of a local area is avoided; the internal pressure of the inner layer pipe can be adjusted through deformation, and when the inner layer pipe is expanded, the inner diameter of the outer layer pipe can be adaptively increased, so that the balance of the internal pressure and the external pressure is realized, and the inner layer pipe is prevented from being broken; and the expansion degree between the two half sleeves can be limited through the sliding sleeve, and the situation that the inner layer pipe is broken due to excessive deformation is avoided.

The invention discloses a pneumatic type balloon heart assisting apparatus, which comprises an annular balloon and vent tubes, wherein the inner wall and the outer wall of the balloon are made from an elastic material; or the outer wall of the balloon is made from a ductile and non-elastic material; or the outer wall of the balloon is made from a shaped ductile and non-elastic material; the balloon is provided with a single compartment; or the balloon is provided with 2-8 partition compartments and some of the partition compartments fail to communicate while some of the partition compartments communicate; the balloon is connected to the 1-16 vent tubes; the various partition compartments can be connected to different vent tubes; some of the partition compartments can be provided with separating straps therebetween; an opening structure can be arranged on the balloon wall; the side, close to a cup rim, of the balloon is provided with strip-shaped fixing structures; a fixing structure, which is composed of a slender bag and detachable fixing rods, is arranged on the outer wall of the balloon; the balloon can be represented as a half-side cup or a single balloon; electrocatdiogram sensing parts are arranged on the balloon wall; a cardiac pacing part is arranged on the balloon ball; and pressure sensing parts are arranged on the balloon wall. The apparatus can take an assisting effect on systole and diastole; and the apparatus can limit cardiac dilatation and sense electrocatdiogram and cardiac pacing.

The present invention provides a new three-electrode surface discharge color plasma display screen unit structure so as to implement high-precision barrier pattern generation, reduce wall load of discharge unit, reduce power consumption, make discharge easily ignite and raise addressing speed, reduce visual effect of space bar between mixed colors of three-primary colors and implemenet lifelike color. The surface discharge color plasma display screen unit structure includes front plate and back plate, and the front plate is formed from front base plate, T-type scanning-holding electrode pair, BUS electrode, transparent medium and magnesium oxide cathode membrane layer, and the back plate is formed from back base plate, addressing electrode, white medium, barrier bar, fluorescence powder and charged mixed gas. A black barrier bar is set on the transparent medium surface of front plate, and the scanning-holding electrode pair is made into the T-type.

The invention discloses a basement roof crack repairing method and repairing structure. The basement roof crack repairing method comprises the following steps that the surface of the area, with a crack, of a basement roof is polished and roughened to form a polished and roughened area; a filling layer formed by smearing polymer cement mortar is smeared on the polished and roughened area and fills the crack; a tensile material is fixed to the filling layer and located between the two sides of the crack; and a filling layer is smeared on the filling layer and the tensile material to completely cover the filling layer and the tensile material, and the outer edge of the filling layer is flush with the surface of the basement roof. According to the basement roof crack repairing method and repairing structure, the filling layer firmly covers the polished and roughened area and fills the crack through the chemical binding force of the polymer cement mortar and the mechanical bite force formed by the polymer cement mortar and the polished and roughened area, so that the repairing effect on the crack is achieved, and then the tensile performance of the basement roof is further enhanced through cooperation of the tensile material and the filling layer.

A method for forming a semiconductor structure comprises the following steps: providing a semiconductor substrate, and forming a first dielectric layer on the semiconductor substrate; forming a plurality of discrete first metal layers in the first dielectric layer, wherein the tops of the first metal layers are higher than the top surface of the first dielectric layer; forming a second dielectric layer on the first dielectric layer between the adjacent first metal layers; performing oxidation treatment on the first metal layer to form a metal oxide layer; forming a third dielectric layer on the surfaces of the second dielectric layer and the metal oxide layer; and etching the third dielectric layer until the metal oxide layer is exposed to form a through hole. According to the forming method, the through hole can be formed in a self-alignment mode, the limitation of the bottom size of the through hole is enlarged, and the short circuit problem is avoided.

The invention discloses a treatment method for a high-cavitation peripheral pump impeller, and belongs to the field of peripheral pumps. The cavitation performance of a closed peripheral pump is effectively improved by welding buffering feather scales on the basis of an existing impeller, the buffering feather scales prevent liquid from being in direct contact with blade grooves, impact on the blade grooves due to bubble breakage is prevented, the blade is protected well, the V-shaped structure of the buffering feather scale plays a role in guiding the liquid entering and exiting from the blade grooves in the longitudinal vortex motion, so that the impact of the liquid can be effectively weakened, the energy loss is reduced to a certain extent, and the working efficiency is effectively improved; the impact buffering piece on the buffering feather scale intercepts and divides bubbles by utilizing a bubble retaining ball, gas in the bubbles enters a defoaming spherical shell through a breathable film, the bubble rate in liquid is effectively reduced, and the elastic force of an elastic horn on the impact buffering piece can absorb part of impact energy generated when the bubbles are broken; and the cavitation performance of the peripheral pump is effectively improved.

The invention belongs to the technical field of concrete materials, and more particularly relates to a traffic detection device wall. Octa(aminophenyl)octasilsesquioxane is adopted as a silane modifying agent in an organic solvent to reform and modify a hectorite structure to prepare organosilicone modified hectorite, and the organosilicone modified hectorite is compounded with calcium oxide and calcium carboxymethyl cellulose to form an expanding agent used for high-performance shrinkage-compensating concrete. According to the expanding agent provided by the invention, high-temperature calcination is not needed in the preparation process, the prepared expanding agent has a large restrained expansion rate, and under the same technical requirements, the adding amount can be reduced, and thecosts can be reduced.

The invention discloses a projector placing frame with good mobility. The projector placing frame is characterized in that a universal ball joint is connected between the upper end of the connecting rod and the bottom of the platform plate, and the lower end of the connecting rod is fixedly connected with a connecting piece; the end parts of a plurality of supporting legs are hinged to the edge ofthe connecting piece to form radial distribution; a plurality of limiting blocks are arranged on the platform plate, the plurality of limiting blocks can be adjusted to move close to the center of the platform plate or move away from the center of the platform plate, and gaps for clamping the projector are formed between the limiting blocks; a movable table is arranged under the supporting legs,a plurality of self-locking universal wheels are arranged at the bottom of the movable table, a push rod is hinged to one side edge of the movable table, and a handle is arranged at the end of the push rod; and a telescopic shaft is arranged at the bottom of the connecting piece, and a limiting rod is hinged between the bottom end of the telescopic shaft and the side wall of each supporting leg. According to the projector placing frame with good mobility, the projector can be stably fixed, the projector can be conveniently used, and the projector can be conveniently moved.