46 results about "Shrinkage function" patented technology

A method of projection domain processing based on a local transform and shrinkage for use in reconstructing digital images from a set of projections, the method including providing a target image of a target object, providing projection data of the target object, producing filtered projection data by applying a sparsifying transform and a shrinkage function to the projection data, followed by an inverse of the sparsifying transform, producing a restored image by applying a reconstruction transform to the filtered projection data, comparing the restored image to the target image, and producing an optimized projection domain shrinkage function by adapting the shrinkage function to minimize differences between the restored image and the target image. Related apparatus and methods are also described.

Acquiring expected precision even in a case that partial shrinkage occurs. The present invention is a technique for providing data for minimizing a difference between dimensions of a three-dimensional structure formed by laser radiation and design values of a scan path of the three-dimensional structure, in which the technique includes: modeling a manufacturing process of the three-dimensional structure and formulating a shrinkage of material used in the manufacturing process; and performing an optimization calculation for minimizing the difference between the dimensions of the three-dimensional structure after the shrinkage of the material and the design values by using the formulated shrinkage model to compute the scan length x minimizing the difference, and in which the formulation includes formulating a shrinkage function in the case where the material shrinks according to the scan length x_i of the scan path of the laser.

The invention discloses a method for identifying sino atrial node electrogram based on integration of wavelet transform and a support vector machine, comprising the following steps of: firstly carrying out wavelet filtering processing on a sino atrial node electrogram signal based on a bivariate shrinkage function; then carrying out four-layer double density wavelet transform on the interference eliminated signal, carrying out V wave peak value positioning on a scaling function x(n) at the fourth layer by means of an adaptive slope method, based on the above processing, positioning an A wave peak value, calculating time width characteristic TA of the A wave, and positioning a starting point and an ending point of a P forward wave to obtain sino atrial node conduction time TSACT (Total Sino Atrial Conduction time); and respectively calculating cross entropies HA and HP of two double density wavelet coefficients of the A wave and the P forward wave, carrying out tandem fusion on the above characteristic parameters of TA, TSACT, HA and HP to obtain a fusion characteristic vector FSNE=(TATSACTHAHP), and finally sorting the characteristic vector using a wavelet support vector machine so as to realize the identification of the sino atrial node function.

The invention provides a bundling band disk mechanism. A rotary shaft is supported by a bearing in a bearing block. A speed reduction motor is connected with the end of the rotary shaft and drives the rotary shaft to rotate. An inner guard plate is connected with the shaft shoulder of the rotary shaft. The outer side of the inner guard plate is provided with two or more hinged ports. The hinged ports are hinged to expansion and shrinkage plates, chain plates and a thread sleeve through pin shafts in sequence. The thread sleeve slides on the rotary shaft through a guide key on the rotary shaft but does not rotate. The thread sleeve is connected with an external thread of a threaded rod through an internal thread. The threaded rod is made to rotate but does not move under the restraint of a baffle; a handle connected to the end of the threaded rod is rotated to drive the thread sleeve to move forwards and backwards, so that the chain plates are driven to move, the included angle between the chain plates and the corresponding expansion and shrinkage plates is changed, the expansion and shrinkage functions are achieved, and a bundling band is supported and fixed. An internal thread in the center of the outer guard plate and an external thread of the thread sleeve are connected, so that the two end faces of the bundling band are fixed, and finally the speed reduction motor is used for driving the rotary shaft to drive a whole bundling band disk to rotate and uncoil the bundling band. The bundling band disk mechanism is simple in structure and high in practicality.

The invention provides an alkali-free accelerator with a shrinkage function as well as a preparation method and application thereof. The alkali-free accelerator with the shrinkage function takes alcohol amine, aluminum sulfate, magnesium sulfate and/or magnesium silicate as an accelerating component and is composed of a shrinkage component and sulfonated graphene; and the shrinkage component has apolyether chain segment and a straight chain alkyl group containing C16 to C18 or an alkyl group with a branch chain. The alkali-free accelerator with the shrinkage function solves the problems of over-shrinkage and relatively low cracking resistance of sprayed concrete.

The invention belongs to the field of medicine, which relates to Deferiprone and a novel medicated purpose of a Deferiprone preparation, in particular to Deferiprone (1,2- dimethyl-3-hydroxide radical-4-pyridine, Deferiprone) and the application of the Deferiprone preparation in the prevention and curing of Anthracycline medicine heart toxicity. The invention researches the preventing and curing function of the Deferiprone to bandicoot heart toxicity caused by Adriamycin from the cell level, the tissue level and the whole level and prepares biodegradable type Deferiprone implant, Deferiprone troche, capsule, oral liquor and injection that can release medicine continuously. An experimental result proves that the Deferiprone and the Deferiprone preparation can not only improves the cardiac muscle shrinkage functions and protects the myocardial cell organ structure, but also complexes free iron ions directly, reduces the heart toxicity and other side and toxic effects caused by the Anthracycline medicine obviously and the mortality rate caused by the Anthracycline medicine.

The invention provides a pervious concrete self-crystallization multi-lacuna gel material, which adopts Portland cement as a main body, and forms the gel material with automatic expansion and shrinkage functions through compositing a micro-expanding agent, a crystallizing agent and fine elastic colloidal particles. When being applied to pervious concrete, the gel material is self-crystallized to form multi-lacuna ettringite with flexibility, and not only has favorable adhesion with coarse and fine aggregates, but also forms multi-lacuna pervious channels. When being used, the self-crystallization gel material and porous fine aggregates are used cooperatively, and micro pores of the porous fine aggregates cannot be blocked. Therefore, a large amount of porous fine aggregates can be used in the pervious concrete, the adhesion interface area between the coarse aggregates is increased, and the strength of the pervious concrete is improved. The pervious concrete self-crystallization multi-lacuna gel material can be applied to concretes for high-load roads such as urban roads and highway roads.

The invention provides a folium ginkgo health product for preventing senile dementia, which comprises raw materials by weight portions: 10-30 portions of folium ginkgo, 10-20 portions of polygala tenuifolia, 10-20 portions of prepared rehmannia root, 10-20 portions of Chinese angelica, 10-20 portions of dogwood, 10-20 portions of root of red-rooted salvia, 10-20 portions of poria with hostwood, 10-20 portions of walnut kernel, 10-20 portions of codonopsis pilosula, 10-20 portions of platycladi seed, 10-20 portions of herba epimedii, 10-20 portions of astragalus mongholicus, 10-20 portions of polygonum multiflorum, 10-20 portions of white paeony root, 10-20 portions of fructus ligustri lucidi, 10-20 portions of bunge cherry seed, 10-20 portions of albizia flower and 10-20 portions of tuber fleeceflower stem. The folium ginkgo is extracted, the effective ingredients of the folium ginkgo are retained, the toxicity is reduced, and medicine directly reaches lesions to regulate qi and blood and balance yin and yang. On the one hand, the brain cell shrinkage function is improved, the conditions of Qi-stagnation and blood stasis and venation with the blood stasis are improved, qi and blood keep unblocked, and the blood oxygen supply of brain tissue is secured; and on the other hand, the damaged brain cell tissue is repaired and activated, and the normal brain function is restored.

The invention relates to a concrete shrinkage reducing agent and a preparation method and application thereof. The preparation method comprises the following steps that acrylic polyether, an initiator and water are mixed to be uniform, a first reactant is obtained, and temperature rise is carried out; crylic acid and water are mixed to be uniform, and a second reactant is obtained; methacrylic acid diethylene glycol monobutyl ether ester and phellandrene are mixed to be uniform, and a third reactant is obtained; a reducing agent, a chain transfer agent and water are mixed to be uniform, and a fourth reactant is obtained; the second reactant, the third reactant and the fourth reactant are dropwise added into the first reactant obtained after temperature rise at the same time; after all the reactants are dropwise added, heat preservation is carried out, and then cooling is carried out; an alkaline solution and water are added into the obtained product, and the concrete shrinkage reducing agent is obtained. According to the prepared concrete shrinkage reducing agent, the water reducing and shrinkage function of the concrete shrinkage reducing agent can be enhanced, the antifreezing capacity, compressive strength and anti-cracking ability of concrete can be improved, and the service life of the concrete can be prolonged; the production cost of the concrete can be reduced, and the application range is wide.

The invention discloses an intelligent mechanical arm convenient to move. The intelligent mechanical arm convenient to move comprises a base, a stand column, shaft joints, a control device and a remote controller; a storage box is arranged on one side of the stand column; the shaft joints are rotationally connected pairwise; an extension control mechanism is arranged in the connecting place of two shaft joints; the remote controller and the control device are in wireless communicating connection; a driving control module, an actuation control module, an extension control module, a warning control module, a remote controller control module and a central control module are arranged in the control device; the remote controller control module is connected with the remote controller; and the driving control module, the actuation control module, the extension control module, the warning control module and the remote controller control module are all connected with the central control module. The intelligent mechanical arm convenient to move realizes one-key control through the remote controller, in particular, controls extension of the shaft joints through the remote controller, and is provided with the extension control mechanism between two shaft joints for realizing a shrinkage function of the shaft joints to conveniently carry and move the mechanical arm.

The invention discloses a flame-retardant silicone rubber heat-shrinkable sleeve and a preparation method thereof. The raw materials of the heat-shrinkable sleeve comprise (A) polyorganosiloxane having at least two alkenyl groups, (B) a thermoplastic resin or a mixture of several thermoplastic resins, (C) fumed silica or precipitated white carbon black or a mixture thereof having the specific surface area of at least 50 m<2>/g, (D) inorganic filler, (E) a fire retardant and (F) a curing agent. The raw materials except the curing agent (F) are uniformly mixed in a vacuum kneading machine, and then the mixture is subjected to heating and vacuumizing to obtain a silicone rubber mixture; the curing agent (F) is added in an open mill and extruding, vulcanizing and shaping are performed, and then the silicone rubber tube is expanded at the heating condition, and under the expanded condition, the silicone rubber tube is cooled and shaped under the normal temperature condition, so as to obtain the silicone rubber sleeve with the heat shrinkage function. The silicone rubber heat shrinkage sleeve is easy to process, the flame retardance of the silicone rubber heat-shrinkable sleeve is good, and the shrinkage is very good.

The invention discloses a preparation method for an automatic-shrinkage insulation protection casing pipe, which has the technical scheme that the automatic-shrinkage insulation protection casing pipe is polymerized by polymer organic material and is swelled after being dipped in chemical solution; the swelled automatic-shrinkage insulation protection casing pipe is directly sheathed on a workpiece; and with the volatilization of the chemical solution, a product is automatically balanced and shrunk to be fixedly arranged on the workpiece. Because the automatic-shrinkage insulation protection casing pipe adopts a peculiar material formula and a processing method, the automatic-shrinkage insulation protection casing pipe has an automatic shrinkage function in the air and also has the performances of insulation, corrosion resistance, water resistance, moisture resistance, sealing and the like. The automatic-shrinkage insulation protection casing pipe has the advantages that the automatic-shrinkage insulation protection casing pipe can be used in any place without the limitation of forbidding fire. In addition, installation charge is saved. Compared with a chilling shrink type insulation casing pipe, the automatic-shrinkage insulation protection casing pipe has the characteristic that the product cost is greatly lowered due to the fact that no plastic skeletons are used for supporting.

The invention relates to the technical field of spare parts for building materials, and discloses a wall plate and floor plate structure with a unilateral shrinkage function. The wall plate and floorplate structure with the unilateral shrinkage function comprises a keel and a panel. The keel comprises mounting plates and fixing plates fixed to the mounting plates, and a connecting shaft is arranged on the fixing plates. The panel comprises a main plate and an auxiliary plate which is slidably connected with the main plate, the main plate and the auxiliary plate are provided with connecting plates correspondingly, and the main plate, the auxiliary plate and the two connecting plates constitute a U-shaped plate. Supporting plates are arranged at the upper and lower ends of the U-shaped plate correspondingly, each supporting plate comprises a right plate and a left plate which is slidably connected with the right plate, and the right plates can slide along with the main plate. The mounting plates can be connected with the connecting plates and the supporting plates correspondingly. According to the wall plate and floor plate structure with the unilateral shrinkage function, the sizeof mold plates is adjusted through sliding of the main plate and the auxiliary plate, adding other wall plates to supplement is avoided, and thus the work efficiency is improved.

The invention relates to a multi-section air bag type inflatable sleeve tandem jointing inflation shaft. The multi-section air bag type inflatable sleeve tandem jointing inflation shaft is characterized by comprising an inflatable sleeve shell (1), a plurality of inflating block assemblies (2), an air bag with an expansion and shrinkage function, left and right end covers (4), a gasket (5), a main shaft (6) and gas inlet and exhaust assemblies (7). According to the inflation shaft, the air bag type inflatable sleeve and the gasket are in tandem connection and are assembled on the main shaft with a certain length in a multi-section manner, a cap is used for tightening, all sections are independently inflated and used, if the air bag in one certain section of the inflatable sleeve is damaged, use of all sections of the inflatable sleeve on production is not influenced, stop production can be avoided, and the aims of environmental protection and energy saving are achieved.

The invention discloses a medical infusion bottle recycling device with a heat shrinkage function. The medical infusion bottle recycling device comprises a box body, wherein a base is arranged below the box body; rollers are symmetrically arranged at the left side and right side of the base and are used for conveniently carrying the device; support sleeves are symmetrically arranged at both sidesof the upper end of the base; a support rod is slidably arranged at the upper end of each support sleeve; the upper end of each support rod is fixedly connected with the bottom part of the box body; abuffer spring is arranged in each support sleeve, and is used for fixing the corresponding support rod and the support sleeve; an accommodation box is arranged in the box body, and is of a rectangular structure of which the upper end is provided with an opening; pulleys are arranged at the bottom part of the accommodation box; the bottom part of the interior of the box body is provided with slidegrooves which are matched with the pulleys. The medical infusion bottle recycling device has the advantages that the problem of larger occupation space of the complete bottle is solved; in the working process, the air in the box body is sucked out by an air suction fan, and penetrates through a purifying box and a disinfecting box, so as to complete filtering and disinfecting, thereby avoiding the problem of pollution to air by the internal air in the box body; meanwhile. the quality of the surrounding air is also improved, and the practicality is high.

A mechanical synchronous shrinkage door belongs to the field of machine electricity, and is applied in emergent escape when doors are deadly stuck under the conditions, such as daily house theft prevention, earthquake, fire and the like. The door adopts a pure mechanical structure to guarantee normal, stable and reliable operation in disaster emergency. A one-key trigger is additionally provided to leave out a larger space in a door body when enabling the door body to has a shrinkage function, so that reinforcement of the door body and other operations are conveniently implemented. The door guarantees the shape and the theft prevention function of the normal door body, and has one added function of dead locking prevention compared with existing security doors in the market. The door is suitable for the emergent escape under the conditions, such as daily house theft prevention, earthquake, fire and the like, and has a larger actual application space.

The invention discloses a device for achieving a material forced shrinkage function through differential mechanisms. The device comprises a supporting frame, a front variable frequency motor, rollers with the bevel gear differential mechanisms, and a rear variable frequency motor. The transmission rollers are consistent in diameter, and the tooth number of chain wheels on the bevel gear differential mechanisms connected with the transmission rollers is sequentially and progressively increased from left to right. Under driving of the front variable frequency motor and the rear variable frequency motor which are located at the two ends and have different speeds, the rotation speed of all the transmission rollers is sequentially and progressively changed. Materials are forcibly shrunk on the upper portions of the transmission rollers; the stretching phenomenon is avoided; and the gradual differential speeds are adopted for solving the problem that stretching deformation occurs after tire tread rubber is extruded, so that the shape of the tread rubber is restored. According to the device for achieving the material forced shrinkage function through the differential mechanisms, the structure is simple, adjusting is convenient, and the material quality is greatly improved after the tire rubber surface is extruded.

The invention relates to a collapsible wood-plastic plate conveying device. The collapsible wood-plastic plate conveying device comprises a rack and a transmission part mounted on the rack, wherein aworkbench is arranged on the rack; a charge station, a detection station and a discharge station are arranged on the workbench; at least two supporting frames are mounted on the bottom of the workbench; the transmission part comprises drive equipment, drive wheels connected with the drive equipment, first driven wheels and third driven wheels; a transmission belt is arranged between the first driven wheels in a sleeving mode; the drive wheels are connected with the first driven wheels through rotary shafts for driving the first driven wheels to transmit wood-plastic plates; and the second driven wheels are fixedly mounted on the workbench for rolling the transmission belt. The wood-plastic plates are transmitted through the transmission belt, and furthermore, the third driven wheels can roll the transmission belt for realizing a shrinkage function, so that the conveying device further can improve conveying working efficiency while being convenient to move.

The invention discloses a multifunctional cosmetic mirror which comprises a shell, a middle mirror frame, a plurality of LED lights, a first plane mirror frame, a second plane mirror frame, a first edge and a second edge, wherein the shell comprises a bottom shell and an upper shell which is in buckle connection with the bottom shell; the shell is provided with a mirror frame accommodating cavity; the bottom shell is provided with an accommodating groove; the upper shell is provided with a light-transmitting cavity corresponding to the accommodating groove; the middle mirror frame is arranged inside the mirror frame accommodating cavity, and is pivoted to the shell; the plurality of the LED lights are arranged inside the accommodating groove of the bottom shell; the first plane mirror frame and the second plane mirror frame are pivoted to the bottom shell; the first edge and the second edge are oppositely arranged; a plane mirror is arranged in each of the first plane mirror frame and the second plane mirror frame; the lamination surfaces of the plane mirrors are arranged near the bottom shell. The cosmetic mirror has expansion and shrinkage functions, and can be used under the condition of relatively dim light.

The present invention provides an acrylic shrinkable fiber that can be dyed even if the fiber has a fineness of 1 dtex or more, and has a high shrinkage function even after dyeing, and a fleece fabric product using the same. The acrylic shrinkable fiber of the present invention is characterized in that it contains 40 to 93% by weight of acrylonitrile, 2 to 10% by weight of monomers containing sulfonic acid groups, and 5 to 58% by weight of monomers that can be copolymerized with the above components. It is formed by the copolymer of the body, and the average fineness is above 1dtex.