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32results about How to "Guaranteed Strength Requirements" patented technology

Prestressed concrete and steel combined tower on which self-support wind generator set can be assembled and anchoring method of prestressed concrete and steel combined tower

The invention belongs to a prestressed concrete and steel combined tower on which a self-support wind generator set can be assembled and an anchoring method of the prestressed concrete and steel combined tower. The prestressed concrete and steel combined tower comprises a fan foundation and a steel tower cylinder section above the fan foundation and further comprises a prefabricated concrete tower cylinder section and a prefabricated concrete conversion section, and the fan foundation, the prefabricated concrete tower cylinder section, the prefabricated concrete conversion section and the steel tower cylinder section are sequentially connected through prestress anchor sheaves in the sequence from bottom to top. According to the prestressed concrete and steel combined tower on which the self-support wind generator set can be assembled and the anchoring method of the prestressed concrete and steel combined tower, a tower used for the wind generator set is divided into the concrete part and the steel part which are connected through the prefabricated concrete conversion section, and concrete is in a pre-compression state through tensioning of the internal and external prestress anchor sheaves. The concrete tower cylinder section is divided into a plurality of sections according to an actual project and formed by prefabricating and splicing in the sequence of ring pieces-ring sections-segments. The prestressed concrete and steel combined tower has the advantages of being good in quality, low in manufacturing cost, convenient to maintain and the like, the construction method is simple, and the construction speed is high.
Owner:POWERCHINA XIBEI ENG

Mechanics experiment system and method for perforated string in underground perforating blasting of oil-gas well

The invention discloses a mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system comprises an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A / D converter and a computer, wherein the signal amplifier, the A / D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string comprises an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom. The invention further discloses an experiment method. The system and the method have the beneficial effects that the dynamic data of an underground pressure field can be acquired during perforating, including an annulus pressure field, and the radial, axial and circumferential acceleration time domain variation value of the string during perforating, thus the analyzing basis is provided to analyze underground accident occurrence mechanism of perforating; the construction and work are guided to avoid accidents; the system and the method are of important significance in ensuring the string intensity demand and increasing the oil yield.
Owner:SOUTHWEST PETROLEUM UNIV

Downhole string dynamic response test system and test method under explosive blast

The invention discloses a downhole string dynamic response test system and test method under explosive blast, relates to an ultra-deep oil-gas well string dynamic response test system and test method, and belongs to the technical field of well logging in the process of development of oil and gas fields. The test system comprises an acceleration test mechanical system and an electronic circuit and support software subsystem. The acceleration test mechanical system comprises an acceleration sensor and a test system shell. The test system shell is mainly composed of an accelerometer head, a buffer connecting member, a thermal insulation sleeve connecting member, a thermal insulation sleeve, a circuit board support, an external sleeve and a rear cover component. The acceleration sensor is isolated from the external high temperature condition by protection of the thermal insulation sleeve and can normally work in extreme circumstances. The invention also discloses the test method realized based on the test system. Axial, radial and circumferential acceleration of a perforating gun in the extreme circumstances can be measured, and the law of shock wave loading and the law of string dynamic response can be researched by analyzing and processing the measured acceleration information.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Design method of assembled-type prestressed concrete cylindrical column base

The invention relates to a design method of an assembled-type prestressed concrete cylindrical column base. The design method is characterized in that precast concrete cylindrical columns are assembled to form a cylindrical column base, an anchor rope is anchored and then tensioned to enable the concrete to be at a prepressed state, and a load transmitted from a lofty structure at the upper part is resisted by passive soil pressure of a soil body at the outer side of backfilled concrete of the assembled prestressed concrete cylindrical column base. The design method disclosed by the invention has the characteristics of high construction speed, good quality, low cost and the like.
Owner:POWERCHINA XIBEI ENG

Phosphogypsum treating agent, phosphogypsum treating method, preparation method of phosphogypsum filling material and phosphogypsum filling material

The invention relates to a phosphogypsum treating agent, a phosphogypsum treating method, a phosphogypsum filling material preparation method and a phosphogypsum filling material. The treating agent comprises the following components in percentage by mass: 27.7%-96.7% of calcined phosphate tailings, 0.3%-1% of ammonium sulfate, 3%-68% of solid waste micro powder and 0-3.5% of an alkaline activator, wherein the calcined phosphate tailings are calcined products of high-magnesium phosphate tailings. Based on the phosphogypsum treating agent, harmless treatment of phosphogypsum can be achieved, effective utilization of solid waste high-magnesium phosphate tailings can be achieved, and meanwhile the strength requirement of phosphogypsum serving as an engineering filling material is met.
Owner:WUHAN INSTITUTE OF TECHNOLOGY

Method for forming composite rhBMP-2 elasticity modulus graded porous titanium alloy support rod for femoral head and neck

The invention relates to a method for forming a composite rhBMP-2 elasticity modulus graded porous titanium alloy support rod for the femoral head and the neck. Titanium alloy powder is prepared with an electrode induction melting gas atomization method, and the integrated elasticity modulus graded porous titanium alloy support rod consisting of a head part, a body part and a tail part is prepared according to actually measured biomechanical parameters of the femoral head, the neck and a rotor, wherein the head part and the body part are prepared by sintering the titanium alloy powder and pore-forming agents through the adoption of a cold rolling method, the tail part is prepared by directly sintering the titanium alloy powder, and the porous titanium alloy support rod is immersed in a rhBMP-2 / gelatin controlled release microsphere solution. The product prepared by the method can simulate the biomechanical properties of the femoral head and the neck of a human body to the utmost extent, thereby being beneficial to the stress transfer between materials and bone tissue interfaces, avoiding poor bone restoration caused by the stress shielding effect; and simultaneously, sustained-release microspheres on which bone induced growth factors (rhBMP-2) are loaded endue the materials per se with good bone conductivity.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Split prefabricated assembly type combined tower drum connecting joint and mounting method thereof

The invention relates to a connecting joint, in particular to a split prefabricated assembly type combined tower drum connecting joint and a mounting method thereof. The split prefabricated assembly type combined tower drum connecting joint comprises an upper flange plate, a lower flange plate, prestressed steel bars, prestressed embedded parts and a shell, wherein the prestressed steel bars are formed by a plurality of reinforcing steel bars in a cage shape, the lower flange plate is arranged at the lower ends of the reinforcing steel bars, the upper flange plate is arranged at the upper endsof the reinforcing steel bars, the lower flange plate and the upper flange plate are both fixed to the shell, and the prestressed embedded parts penetrate through the shell. The problems of sudden rigidity change at the joint of a concrete tower drum section and a steel tower drum and local buckling of a connecting joint are perfected or avoided as much as possible, and meanwhile, the transportation cost can be reduced in a split mode, the construction difficulty is simplified, and the efficiency is improved.
Owner:上海电气研砼(木垒)建筑科技有限公司

Energy-saving cooking range

The invention relates to the field of cooking range infrastructures, in particular to an energy-saving cooking range. The energy-saving cooking range comprises a hearth, and more than three flame guide ribs circumferentially and uniformly distributed along an internal wall of the hearth, wherein the hearth is in a cylindrical or bowl-shaped structure; a gas distributing disk and an ignition part matched with the gas distributing disk for ignition are arranged at the bottom of the hearth; the energy-saving cooking range is provided with air inlets used for allowing air to enter in the hearth and / or in a position where the gas distributing disk is matched with the hearth; the flame guide ribs extend from the bottom of the hearth to the top of the hearth sequentially; and arrangement directions of the flame guide ribs are different from a generatrix direction of the hearth. According to the energy-saving cooking range, a flow-through route of a flame can be changed by an artificially designed flame path, so that a purpose of prolonging the attachment time of the flame on the internal wall of the hearth can be achieved; an effect of improving heat exchange is further exerted; the energy-saving cooking range is simple in structure and convenient to realize; and the low manufacturing cost and the low use cost of the energy-saving cooking range can be ensured effectively.
Owner:ANHUI HANSUM INSTR EQUIP

Preparation method of light bicycle frame with high strength and low density

The invention relates to a preparation method of a light bicycle frame with high strength and low density. The method comprises the following steps: (1) preparing a magnesium alloy ingot; (2) annealing after machining of the magnesium alloy ingot; (3) carrying out forward extrusion preparation; (4) extruding the magnesium alloy ingot obtained in step (3) to obtain a profile and dragging; (5) carrying out backward extrusion preparation; (6) extruding the magnesium alloy ingot obtained in step (5) to obtain a profile and dragging; (7) cutting the profiles obtained in step (4) and step (6); (8) machining a product obtained in step (7), then quenching, carrying out aging treatment, and then naturally cooling to room temperature to obtain a pipe; (9) carrying out treatment and heat preservation on the pipe obtained in step (8); and (10) machining the pipe obtained in step (9) after welding, heat treatment and cooling to obtain the product of the bicycle frame. The preparation method is simple in process and easy to implement, and the obtained product can solve the problem of compatibility of strength and weight of the bicycle frame to the greatest extent.
Owner:QINGHAI TSAIDAM QINGYUAN MAGNESIUM SCI & TECH CO LTD +1

Visible picking device used for torreya grandis

PendingCN107258234ARealize real-time pickingHold for a long timePicking devicesEngineeringStructural engineering
The invention provides a visible picking device used for torreya grandis. The visible picking device comprises a visible picking device body, a control part and a visible part, wherein the visible picking device body comprises a string bag, a picking rod and a handheld rod, the picking rod is of a cylindrical telescoping structure, and one end of the picking rod is connected with the handheld rod; the control part is composed of scissors and a controller; the visible part is composed of a monitor, a camera and an inner circuit. Fruits needing to be picked up are precisely found through images which are transmitted to the monitor through the camera in real time, and the fruits are cut off by using the scissors so that the fruits can safely fall into the string bag; due to the design that the picking rod and the handheld rod are made of aluminum alloy, on the one hand, the external strength of the picking rod and the handheld rod can be ensured, and on the other hand, a user can conveniently hold the rod for a long time because of the low weight of the aluminum alloy. The circuit is integrated into the telescoping rod, so that the circuit is prevented from affecting the scissors, and the visible picking device is convenient to carry.
Owner:GUIZHOU BOTANICAL GARDEN (GUIZHOU INST OF HORTICULTURAL SCI GUIZHOU INST OF BOTANY)

IP67-compliant electric vehicle aluminum alloy battery tray

The invention relates to the technical field of battery trays. An IP67-compliant electric vehicle aluminum alloy battery tray comprises an aluminum alloy battery tray; the aluminum alloy battery traycomprises a U-shaped underframe, a left cross beam and a right cross beam; the U-shaped underframe comprises a support portion; the support portion comprises an upper aluminum alloy plate and a loweraluminum alloy plate which are arranged vertically; the left and right ends of the upper aluminum alloy plate are provided with the isosceles trapezoidal notches arranged in a mirror symmetry mode; the left and right ends of the lower aluminum alloy plate are provided with the rectangular notches arranged in a mirror symmetry mode; both the left cross beam and the right cross beam are provided with bottom support plates; the bottom support plate comprises an upper support plate and a lower support plate arranged vertically; the upper support plate and the lower support plate are connected through a connecting strip; the upper support plate is embedded in the isosceles trapezoidal notch of the upper aluminum alloy plate to be welded and connected with the upper aluminum alloy plate; and thelower support plate is embedded in the rectangular notch of the lower aluminum alloy plate to be welded and connected with the lower aluminum alloy plate. The weight of the whole product is reduced.
Owner:SHANGHAI UNISON ALUMINUM PRODS

A portable folding shoe rack

PendingCN109106088APrevent slidingMeet the placement needsWardrobesFolding cabinetsPublic placeModularity
The invention provides a portable folding shoe rack which belongs to furniture. The invention solves the problem of storing shoes in a small space, aiming at a small-sized house, a collective dormitory, a small-sized recreational public place. The invention has good tensile and compressive performance, according to the different use requirements of the user, through simple stretching, the cross tensile and compressive mechanism originally compressed and placed can be extended, and the transverse volume of the product can be changed. Through simple sliding, the cross tension and compression mechanism of each layer can slide laterally, so that the shoe rack with the same width can be changed into a stepped shoe rack, so as to accommodate the shoe placement of different sizes and heights; theinvention adopts modular design and can be freely combined and prolonged according to requirements. The invention is provided with a pulley which can be easily moved; at that same time, the inventioncan also be folded and stored when idle, and can be fit for a plurality of places.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

A Discrete Flexible Mold

Disclosed is a discrete flexible die. An upper discrete die is connected with an upper sider of a press, a lower discrete die is combined with a base of the press and comprises a lower die support, a top supporting plate of the lower die support is assembled with hydraulic tensioning sleeves, oil supply of each hydraulic tensioning sleeves is realized through an oil pipe, a piezometer is mounted at the tail end of each row of the oil pipes, a punch is inserted into a middle round hole of each hydraulic tensioning sleeve, and an electric push rod is mounted below each punch; the upper discrete die comprises an upper die support, hydraulic tensioning sleeves are mounted on a middle supporting plate of the upper die support, oil supply of each hydraulic tensioning sleeve is realized through an oil pipe, and a piezometer is mounted at the tail end of each row of the oil pipes. Shape adjusting is realized by adopting the electric push rods controlled by a circuit, and the die punches are locked through the hydraulic tensioning sleeves after shape adjusting is completed; the punches is high in bearing capacity, thereby being capable of used for plate forming and part supporting; the whole discrete flexible die is simple in structure and low in manufacturing cost; two implementable schemes are provided for curved surface continuation after forming, and the discrete flexible die is high in efficiency, low in cost and free of environmental pollution.
Owner:XI AN JIAOTONG UNIV

Design and construction method of fabricated house building

The invention discloses a design and construction method of a fabricated house building. The method comprises the following steps of 1, drawing an overall building wall graph of a fabricated house; 2, performing pouring construction of a house foundation; 3, processing and preparing house walls; 4, processing and preparing an assembled roof; 5, assembling the house walls and the house foundation; 6, firmly integrating the surrounding house walls; and 7, assembling the assembled roof and the house walls. Meanwhile, a corresponding fabricated house main body structure is formed. According to the invention, the construction of the house building is achieved only through the house foundation, the house walls and the fabricated roof, so that drawing of a construction drawing is facilitated and the working efficiency of designers is improved; meanwhile the prefabricated house building and the construction method thereof have the effects of convenience in installation, high efficiency and low cost; and the overall structural strength is high, and assembling and disassembling are convenient.
Owner:赵传辉

Treatment method of 3D material

The invention provides a treatment method of a 3D material. According to the method, a styrene-butadiene copolymer is adopted as a 3D printing material, and is subjected to shearing, swelling, softening, grinding, air-drying granulation and cooling treatment, so that the strength requirement of a printed finished product can be met, and the forming speed of the printed finished product can be increased.
Owner:酸枣科技(上海)有限公司

An energy-saving cooker

The invention relates to the field of cooking range infrastructures, in particular to an energy-saving cooking range. The energy-saving cooking range comprises a hearth, and more than three flame guide ribs circumferentially and uniformly distributed along an internal wall of the hearth, wherein the hearth is in a cylindrical or bowl-shaped structure; a gas distributing disk and an ignition part matched with the gas distributing disk for ignition are arranged at the bottom of the hearth; the energy-saving cooking range is provided with air inlets used for allowing air to enter in the hearth and / or in a position where the gas distributing disk is matched with the hearth; the flame guide ribs extend from the bottom of the hearth to the top of the hearth sequentially; and arrangement directions of the flame guide ribs are different from a generatrix direction of the hearth. According to the energy-saving cooking range, a flow-through route of a flame can be changed by an artificially designed flame path, so that a purpose of prolonging the attachment time of the flame on the internal wall of the hearth can be achieved; an effect of improving heat exchange is further exerted; the energy-saving cooking range is simple in structure and convenient to realize; and the low manufacturing cost and the low use cost of the energy-saving cooking range can be ensured effectively.
Owner:ANHUI HANSUM INSTR EQUIP

An ip67-compliant aluminum alloy battery tray for electric vehicles

The present invention relates to the technical field of battery trays. An electric vehicle aluminum alloy battery tray conforming to IP67, comprising an aluminum alloy battery tray, the aluminum alloy battery tray includes a U-shaped base frame, a left cross beam and a right cross beam, the U-shaped base frame includes a support portion, and the support portion includes upper and lower upper and lower beams. The aluminum alloy plate and the lower aluminum alloy plate; the left and right ends of the upper aluminum alloy plate are provided with mirror-symmetrical isosceles trapezoid-shaped gaps; the left and right ends of the lower aluminum alloy plate are provided with mirror-symmetrical rectangular-shaped gaps; The right beam includes a bottom support plate, the bottom support plate includes an upper support plate and a lower support plate arranged up and down, the upper support plate and the lower support plate are connected by connecting bars, and the upper support plate is embedded in the shape of an isosceles trapezoid of the upper aluminum alloy plate. The lower support plate is embedded in the rectangular notch of the lower aluminum alloy plate, and is connected with the lower aluminum alloy plate by welding. This patent reduces the weight of the entire product.
Owner:SHANGHAI UNISON ALUMINUM PRODS

Method for forming composite rhBMP-2 elasticity modulus graded porous titanium alloy support rod for femoral head and neck

The invention relates to a method for forming a composite rhBMP-2 elasticity modulus graded porous titanium alloy support rod for the femoral head and the neck. Titanium alloy powder is prepared with an electrode induction melting gas atomization method, and the integrated elasticity modulus graded porous titanium alloy support rod consisting of a head part, a body part and a tail part is prepared according to actually measured biomechanical parameters of the femoral head, the neck and a rotor, wherein the head part and the body part are prepared by sintering the titanium alloy powder and pore-forming agents through the adoption of a cold rolling method, the tail part is prepared by directly sintering the titanium alloy powder, and the porous titanium alloy support rod is immersed in a rhBMP-2 / gelatin controlled release microsphere solution. The product prepared by the method can simulate the biomechanical properties of the femoral head and the neck of a human body to the utmost extent, thereby being beneficial to the stress transfer between materials and bone tissue interfaces, avoiding poor bone restoration caused by the stress shielding effect; and simultaneously, sustained-release microspheres on which bone induced growth factors (rhBMP-2) are loaded endue the materials per se with good bone conductivity.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Method for reducing difficulty of ultrasonic welding of engineering plastics

The invention discloses a method for reducing the difficulty of ultrasonic welding of engineering plastics. The method is characterized by comprising the following steps that S1, before ultrasonic welding of the engineering plastics, an auxiliary welding reagent is coated on the welding surface of the engineering plastics in advance, and the auxiliary welding reagent comprises an activating agent.According to the method, the welding surface of the engineering plastic is treated by selecting the auxiliary welding reagent, so that the surface of the engineering plastic is subjected to ultrasonic welding after being subjected to pre-dissolving and activating treatment, and then only low-power ultrasonic welding equipment is needed for wave generation welding, so that the welding difficulty can be reduced, the strength and function requirements of a welding assembly are guaranteed, the power requirement of welding equipment is lowered, cost is saved, and meanwhile unification and standardization of the equipment are promoted.
Owner:XIAMEN RUNNER IND CORP

Composite material closed annular casing layering design structure

The invention belongs to the field of aero-engine structural design and strength analysis, and relates to a composite material closed annular casing layering design structure which comprises a barrel, a transition area, a thickening area, an R area and a flanging which are sequentially connected, the barrel, the transition area, the thickening area, the R area and the flanging are all integrally arranged, that is, continuous layering is generally carried out on a casing from the barrel to the flanging, and the thickness of the casing is larger than that of the barrel. A metal mounting edge and a rivet connecting structure thereof are omitted, so that the load transmission efficiency of the cartridge receiver is improved; the problem that thermal deformation of different materials in the casing in the working state is not coordinated is solved; the layer thickness of the turnup is the same as that of the thickening area, the layer between the thickening area and the transition area is gradually decreased from the thickening area to the transition area in a stepped mode, and the layer between the transition area and the barrel is gradually decreased from the transition area to the barrel in a stepped mode, so that the thickened layer state extends to the cartridge receiver barrel. According to the layering design method, the weight reduction design requirement of engine parts is considered while the strength requirement of each part of the case is ensured, and the number of layering layers is minimized.
Owner:AECC SHENYANG ENGINE RES INST

Connection node and method for reinforced concrete conversion column wrapping reinforced concrete conversion beam

The invention discloses a connection node and method for a reinforced concrete conversion column wrapping a reinforced concrete conversion beam. A beam box is fixed to the top of the reinforced concrete conversion column. Two through holes I penetrating through the beam box in the horizontal direction are formed in the beam box and communicate with each other through a through hole II. The reinforced concrete conversion beam comprises two shaped steel parts I which are matched with the two through holes I correspondingly. The two shaped steel parts are fixedly connected through a second shapedsteel part II. A plurality of channels are arranged in the shaped steel part II, and a plurality of reinforcing steel bars penetrate through each channel. Concrete is poured between the two shaped steel parts I, on two sides of the shaped steel part II and in the channels in the shaped steel part II. The reinforced concrete conversion beam further comprises a bolt, wherein the bolt is used for fixing the beam box and the shaped steel parts I. The connection node and method are used for solving the problems that in a reinforced concrete combination in the prior art, an enveloping structure ofa node position is complex and requires more consumables, and risks may happen to the end portion of a reinforced concrete beam or column in installation processes, and realizes the purposes of reducing the size of a reinforced concrete node and avoiding the risks of damage in connection processes.
Owner:CITIC GUOAN CONSTR GRP CO LTD

A prestressed concrete steel composite tower capable of assembling a self-supporting wind power generating set and its anchoring method

The invention belongs to a prestressed concrete and steel combined tower on which a self-support wind generator set can be assembled and an anchoring method of the prestressed concrete and steel combined tower. The prestressed concrete and steel combined tower comprises a fan foundation and a steel tower cylinder section above the fan foundation and further comprises a prefabricated concrete tower cylinder section and a prefabricated concrete conversion section, and the fan foundation, the prefabricated concrete tower cylinder section, the prefabricated concrete conversion section and the steel tower cylinder section are sequentially connected through prestress anchor sheaves in the sequence from bottom to top. According to the prestressed concrete and steel combined tower on which the self-support wind generator set can be assembled and the anchoring method of the prestressed concrete and steel combined tower, a tower used for the wind generator set is divided into the concrete part and the steel part which are connected through the prefabricated concrete conversion section, and concrete is in a pre-compression state through tensioning of the internal and external prestress anchor sheaves. The concrete tower cylinder section is divided into a plurality of sections according to an actual project and formed by prefabricating and splicing in the sequence of ring pieces-ring sections-segments. The prestressed concrete and steel combined tower has the advantages of being good in quality, low in manufacturing cost, convenient to maintain and the like, the construction method is simple, and the construction speed is high.
Owner:POWERCHINA XIBEI ENG

Air-conditioner air supply system and air-conditioner

The invention relates to an air-conditioner air supply system and an air-conditioner. The air-conditioner air supply system comprises a plurality of air supply units. Each air supply unit is provided with an own air supply fan, an air-supply air channel and an air-conditioner air supply opening. The directions of all the air-conditioner air supply openings are different so as to meet air supply requirements of different regions. According to the air-conditioner air supply system, multi-direction air blowing can be achieved, the requirements for the air supply range and strength can be met, all spaces in a room can be fast refrigerated or heated in the operating process of the air-conditioner, and the temperature in the room can be more uniform.
Owner:GREE ELECTRIC APPLIANCES INC

Waterproofing agent for thermal insulation cement mortar, and application thereof

The invention discloses a waterproofing agent for a thermal insulation cement mortar. The waterproofing agent is potassium n-arachidate. The invention also discloses the thermal insulation cement mortar. The thermal insulation cement mortar comprises Portland cement, a thermal insulation material and the waterproofing agent, the water proofing agent is the potassium n-arachidate, and the saturatedwater absorptivity of the thermal insulation cement mortar is equal to or less than 1.2%. The waterproofing agent is applied to the cement mortar to make the cement mortar have the lightweight, thermal-insulating and waterproof performances, and cooperates with the heat insulation material to ensure the waterproof performance and ensure the strength demand of the cement mortar.
Owner:YANGZHOU POLYTECHNIC INST
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