1844results about How to "Improve protection" patented technology

The invention relates to an anti-ant large-core-number fiber ribbon cable comprising a cable core and an outer sheath. The cable core includes loose tubes; and fiber ribbons are sleeved inside the loose tubes. The outer sheath is an outer nylon sheath; and a non-metallic reinforcement layer is arranged between the outer sheath and the cable core. According to the anti-ant large-core-number fiber ribbon cable provided by the invention, with the outer nylon sheath, ants can not bite the sheath, so that the damages on the optical cable by ant biting in a pipe at an area with a serious anti problem are prevented, the normal state of the cable is ensured, and the application region of the cable is extended. The cable based on a simple and reasonable structure has advantages of small cable diameter, high fiber density, large fiber capacity, and low duty ratio and can be laid in a pipe conveniently; and the bending performance is good. During branched connection, 4 to 24 fibers can be melted once, so that the construction time is saved and the manpower cost is lowered, and the construction efficiency is improved. On the basis of the full drying type dielectric structure, branched connection is realized conveniently and usage becomes convenient.

The utility model provides an air bag device for construction of a cross-fault tunnel foam concrete buffer layer. The air bag device comprises an inflatable flexible air bag, a first annular closed steel formwork and a second annular closed steel formwork. The first annular closed steel formwork and the second annular closed steel formwork are arranged at the two ends of the inflatable flexible air bag. An inflation connector is arranged at one end of the inflatable flexible air bag, and a first filling pipeline and a second filling pipeline are arranged on the first annular closed steel formwork and the second annular closed steel formwork. The construction efficiency is remarkably improved on the premise of not losing the shock absorption and isolation performance of the foam concrete, one-time forming is achieved, the construction quality is guaranteed, and the cost is saved; in addition, due to the reusable characteristic of the air bag device, the construction cost is further reduced, and the problems that in a traditional construction method, efficiency is low, the seismic mitigation and isolation performance of the expanded excavation section foam concrete buffer layer is difficult to guarantee, and cost is high are solved.

The invention discloses an etching solution and a preparation method and an etching method thereof, and belongs to the technical field of microelectronics and display panel manufacturing. The etching liquid comprises the following components in percentage by mass: 50-70% of phosphoric acid, 5-30% of acetic acid, 5-15% of nitric acid, 0.1-0.5% of a water-soluble polymer, 0.05-0.3% of a boron-containing compound, 0.05-0.5% of an etching control agent and the balance of water. The water-soluble polymer is selected from one or more of water-soluble polymers containing a hydroxyl group, an amide group, an ether bond or a pyrrolidone group. The etching solution contains a specific water-soluble polymer, a protective layer can be formed on the surface of the photoresist, attack of high-concentration acid to the etching solution is effectively inhibited, and the cracking problem is avoided; meanwhile, through the synergistic effect of the boron-containing compound and the azole etching control agent, the etching rate, the slope angle and the key size loss can be accurately controlled, and therefore the excellent etching morphology meeting the requirement is obtained.

The present invention relates to a composition of aliphatic emulsion preparation for malignant thoracicoabdominal hydrops and its preparation method. It is made up by adopting pure natural anticancer medicine elemene and at least one polysaccharide selected from ginseng polysaccharide, astragalus polysaccharide, acanthopanax polysaccharide and lyceum polysaccharide as raw material. Said invention can obviously raise solubility of medicine, increase stability of medicine, effectively remove and kill cancer cells and raise immunity of body.

The invention provides a hollow-core-to-hollow or solid-core-to-hollow optical fiber connection jumper wire and a preparation method thereof. The jumper wire comprises a transmission fiber and connectors connected to the two ends of the transmission fiber. The transmission fiber is a hollow-core optical fiber, the connector comprises an optical fiber fixing device and an integrated welding structure fixed in the optical fiber fixing device, the integrated welding structure comprises a transmission fiber, a coating film and a transition fiber which are fixedly connected in sequence, the coating film performs anti-reflection on a set wavelength, the transition fiber is a solid-core optical fiber, and the outer side end of the transition fiber serves as the output end of the connector; and the output ends of different connectors are oppositely arranged so as to realize transmission connection between different jumpers. Pluggable, stable and reliable connection between the hollow-core optical fibers or between the hollow-core optical fibers and the solid-core optical fibers is achieved.

This utility model relates to a bridgeless totem pole PFC lightning protection circuit, comprising a bridge switching transistor module located between the L and N lines, a rectifier bridge BD1 connected to the N line, and a Hall effect chip connected between the bridge switching transistor module and the N line. The bridge switching transistor module includes two slow-acting transistors and two fast-acting transistors, driven by a control chip. The Hall effect chip samples the current flowing through the fast and slow transistors, processes it through an operational amplifier, and sends the sample to the control chip. Simultaneously, the rectifier bridge BD1, connected to a current transformer, also samples the current and sends it to the control chip. Thus, through two different current detection circuits, the drive signals of the slow and fast transistors are controlled separately. When lightning strikes the internal circuit, the circuit can quickly respond and stop the drive of the corresponding power transistor, reliably protecting the power transistors. The circuit is simple in structure, easy to operate, and provides good lightning protection, making it widely applicable in switching power supply devices.

The invention discloses a wind generating set risk early warning method, device and equipment in sand storm weather and a storage medium, and relates to the technical field of wind power generation, and the wind generating set risk early warning method in sand storm weather at least comprises the following steps: collecting multi-source meteorological data in a target area, judging whether a preset sand storm early warning condition is triggered or not according to the multi-source meteorological data; in response to the condition of triggering sand storm early warning, simulating the motion condition of sand and dust according to the multi-source meteorological data and the digital elevation model of the target area, and predicting to obtain sand and dust settlement distribution information in the target area; determining at least one to-be-protected generator set according to a preset wind generating set distribution diagram and the sand and dust sedimentation distribution information; and executing a protection control strategy on the to-be-protected generator set according to the multi-source meteorological data and the sand and dust settlement distribution information. The protection effect on the wind generating set in the sand storm weather is improved, and power generation output is guaranteed.

The utility model discloses a kind of discharging structures of dirt degradation treatment box, including dirt degradation treatment box body, the side fixed mounting of dirt degradation treatment box body is equipped with discharge pipe, the bottom fixed mounting of discharge pipe is equipped with summary box, the inside fixed mounting of summary box is equipped with baffle, the inside of baffle is equipped with multiple air holes, the top fixed mounting of summary box is equipped with connecting pipeline, one end of connecting pipeline is fixedly installed with purifier;The scheme is equipped with summary box, baffle, air hole, connecting pipeline and purifier, purifier can be transmitted to its inside by connecting pipeline, gas generated by dirt degradation is discharged after being purified, baffle can prevent dirt degradation into purifier inside, avoid affecting its normal use, help to protect purifier, after processing, gas is discharged after reaching discharge standard, it is favorable to protect ecological environment, let the discharge effect of dirt degradation treatment box be better.

A decorative plate mounting structure of an integrated water tank comprises a main body and a decorative plate, a mounting frame is arranged on the main body, the decorative plate is mounted on the mounting frame, and the mounting frame surrounds the peripheral side of the decorative plate; a covering edge is arranged on the peripheral side of the mounting frame and covers the peripheral side of the decorative plate; an opening is formed in the front side of the mounting frame, and the front side of the decorative plate is exposed through the opening; the front end of the covered edge is bent inwards to be provided with a limiting edge, and the front side of the decorative plate abuts against the limiting edge. The rear side of the decorative plate is adhered to the mounting frame; the decorative plate is made of glass materials, and the mounting frame is made of stainless steel materials. According to the decorative plate installation structure of the integrated water tank, the installation frame is arranged on the main body, the decorative plate is installed on the installation frame, the installation frame surrounds the peripheral side of the decorative plate, the installation frame plays a good role in protecting the decorative plate, the risk that the decorative plate is damaged by knocking is effectively avoided, the whole decorative plate cannot be exposed, and the decorative plate installation structure is simple in structure and convenient to use. And the integrated water tank is more attractive.

The utility model discloses a kind of peanut seeding devices for agricultural machinery, including carrier structure, which is dragged forward by agricultural machinery, ditching device, the ditching device is installed at the bottom of the carrier structure, and the ditching device is provided with more than one, seeding mechanism, the seeding mechanism is installed by the carrier structure, the seeding mechanism corresponds to the ditching device, and the seeding mechanism spreads seeds into planting groove opened by the ditching device;Soil covering mechanism, the soil covering mechanism is installed by the carrier structure, and the soil covering mechanism re-enters planting groove into soil that ditching device pushes away;The device advances in the form of dragging, and high-efficiency seeding can be realized.

The application discloses a BIPV color steel tile assembly and a building. The BIPV color steel tile assembly comprises a color steel tile back plate, a battery piece accommodating groove and a wire accommodating groove communicated with the two battery piece accommodating grooves are arranged on the color steel tile back plate; a BC battery piece, the back surface of the BC battery piece is attached to the groove bottom of the battery piece accommodating groove; a wire, the wire is located in the wire accommodating groove, is connected between the anode and the cathode of adjacent two BC battery pieces, and the color steel tile back plate, the BC battery piece and the wire constitute a BIPV assembly; a front plate glass is arranged on the side of the BIPV assembly close to the battery piece; and a plastic film is arranged between the BIPV assembly and the front plate glass. The application adopts the BC battery piece, and the battery piece accommodating groove and the wire accommodating groove are arranged on the color steel tile back plate, so that the packaging of the BIPV color steel tile assembly can be realized by using a single layer of plastic film, the cost is reduced, the BC battery piece can be better protected, and the mechanical damage of the battery piece is reduced.

The utility model relates to the technical field of dropper, concretely to a bactericide experiment is with dropper, including operation platform, the top welding of operation platform has the support column, the outside rotation of support column is equipped with the rotating lever, the periphery of rotating lever is respectively welded with a clamping assembly, the outside fixed cover of support column is equipped with second fixed plate, the inside fixed cover of second fixed plate is equipped with the liquid storage jar, the bottom intercommunication of liquid storage jar has the control valve, the outside rotation of support column is equipped with first fixed plate, the inside sliding cover of first fixed plate is equipped with the support slide rod, the bottom of support slide rod is installed with the sealing cover through bearing, one side of operation platform is installed with the limit component. The utility model can avoid the limbs of experimental personnel to enter the drop zone range, thereby avoiding bactericide to fall on the limbs of experimental personnel, thereby improving the protection effect to experimental personnel.

Methods, systems, and apparatuses are described herein for improving computer authentication processes through the generation of synthetic merchants. A plurality of different real merchant names may be received. The plurality of different real merchant names may be processed to determine one or more name elements. A request for access to an account associated with a user may be received. Based on the one or more name elements, one or more synthetic merchant names may be generated. Based on the one or more synthetic merchant names, synthetic transaction data may then be generated. A synthetic authentication question may be generated and presented to a user. A candidate response to the synthetic authentication question may be received. Based on the candidate response, access to the account may be provided.

The present application relates to the technical field of vehicle pseudonym replacement, and particularly relates to a vehicle pseudonym replacement method based on artificial intelligence, which comprises the following steps: determining whether pseudonym replacement is needed according to a replacement time interval value or performing secondary determination based on a quantity ratio reference value and a communication characteristic value; determining a target area type according to a to-be-replaced vehicle distribution reference value and a replacement allowance, and determining whether to directly perform pseudonym replacement or perform combined analysis according to the target area type; in the combined analysis, determining a related vehicle combination based on a position synchronization degree or an interaction reference value according to a vehicle analysis coefficient, determining whether to perform sequential setting of a virtual vehicle based on a quantity difference value or setting a virtual vehicle based on a historical attack frequency of a sub-area, and performing pseudonym replacement on to-be-replaced vehicles and virtual vehicles in the related vehicle combination. The present application can reduce the risk of vehicle location privacy leakage.

The utility model relates to the field of agricultural machinery engineering technology discloses a leek field weed cleaning device, include: handle, for U type state, horizontal setting, U type middle part both sides can place the shoulder strap, shoulder strap, total two groups, through two groups of round magic paste and paste to handle, sliding rod, by a group of thick cylinder and a group of thin cylinder weld together, and place obliquely, and thick cylinder is fixed in handle middle part one side, and thin cylinder one end is provided with fixed mechanism, fixed rod, for cylinder cover, place obliquely, and its one end and the thin cylinder end of sliding rod sliding connection. The locking effect of sliding rod cooperation and fixed mechanism can quickly adjust the overall length of the device, adapt to different height users, the position adjustment of sliding blade and L type board can flexibly change the operation distance, accurately adapt to different row distance leek field, the shoulder strap is convenient for user to bear the device, reduces the handheld operation burden, the adjustment component is simple to operate, and can be stored and save space, improves overall operation efficiency and use safety.

The application relates to a low-eutectic solvent-based gel electrolyte, a preparation method and a zinc-air battery, and belongs to the technical field of metal-air batteries. Choline chloride and 2-methyl-1,3-propanediol are prepared into a deep eutectic solvent, then zinc acetate dihydrate solution, acrylic acid monomer, a crosslinking agent and a photoinitiator are sequentially added, the mixture is uniformly mixed, photopolymerization is carried out, and a low-eutectic solvent-based gel is obtained. The electrolyte is obtained by soaking the gel in a mixed solution of potassium hydroxide and zinc salt. The zinc anode protection capability and the low-temperature adaptability of the gel electrolyte can be improved. The gel electrolyte is assembled into a zinc-air battery together with a zinc electrode and an air electrode, and the cycle life and the operation stability of the battery in a low-temperature environment can be effectively improved.

This invention relates to a method for anonymizing motion data of traffic participants (1,2) equipped with positioning devices, the traffic participants having communication means for transmitting and receiving data with a backend server (3) and for other traffic participants (2,1). The method is characterized in that motion data is collected in the form of separate time-related and location-related data sets and transmitted to the backend server (3), wherein the transmission of at least a portion of the data sets is indirectly carried out via at least one other vehicle (1,2), and / or, the location associations and / or time associations in at least a portion of the data sets are noise-enhanced prior to transmission.

A vehicle seat according to the present invention includes a base to be fixed to a floor of a vehicle, a seat frame above the base, a front link, a reclining link, and a reclining drive mechanism to adjust a reclining angle of the seat frame. The vehicle seat also includes a bracket mounted to the base and extending from a front side to a rear side of the base. One end of the front link is pivotally connected to the seat frame at a front side of the seat frame, and the other end is pivotally connected to one end of the reclining link. The other end of the reclining link is pivotally connected to a front portion of the bracket. The reclining drive mechanism is configured to rotate the reclining link about the pivotal connection of the reclining link to the bracket. According to the present invention, an energy absorbing slot is formed in the bracket, the reclining link is pivotally connected to the energy absorbing slot with a predetermined holding force, and the reclining link is slidable along the energy absorbing slot when a force exceeding the predetermined holding force is applied. The vehicle seat according to the present invention can achieve collision energy absorption and occupant protection, and is simple in construction and light in weight.

The utility model relates to the technical field of agriculture, and discloses a biomass hot-blast stove for drying rice, which comprises a hot-blast stove, the top of the hot-blast stove is fixedly connected with a smoke exhaust pipe, the inner wall of the smoke exhaust pipe is inserted with a filter screen, the left side and the right side of the filter screen are inserted with limiting insertion blocks, and the inner walls of the two limiting insertion blocks are connected through a fixing assembly. Four supporting rods are fixedly connected to the bottom of the hot blast stove, pulleys are rotationally connected to the inner walls of the supporting rods, and the front sides and the rear sides of the pulleys are connected through limiting assemblies so that the pulleys can be fixed. According to the utility model, smoke is filtered through the filter screen, the crank is rotated to enable the two limiting insertion blocks to slide to unfasten the fixation of the filter screen, and the filter screen is pulled out to be replaced and is cleaned and replaced; therefore, the replacement speed of the filter screen is increased, and the working efficiency is improved.

This utility model belongs to the field of power transmission and distribution engineering technology, specifically disclosing an overhead insulated conductor with a reinforced tensile structure. It includes an aluminum conductor, an insulating separator sleeve fitted over the aluminum conductor, an insulating separator sleeve fixedly connected to the outside of the insulating separator sleeve, and a galvanized copper conductor on the outside of the insulating separator sleeve. It also includes reinforcing ribs, fixing blocks, and an outer protective layer for the conductor. The reinforcing ribs are used to improve the tensile strength of the conductor; the fixing blocks are used to fix the internal structure of the conductor. The beneficial effect of this utility model is that by using a non-metallic aramid fiber reinforcing layer and a glass fiber inner protective layer to jointly bear the load, the mechanical tensile function and electrical conduction function of the conductor are separated. The main tensile force is borne by extremely high-strength, extremely lightweight synthetic fibers, enabling the conductor to have a tensile strength and fatigue resistance far exceeding that of traditional steel-cored aluminum stranded wires of the same diameter, while significantly reducing the self-weight of the conductor and the load on the tower.

This utility model discloses a folding structure for a large unmanned aerial vehicle (UAV) frame. It relates to the field of UAV technology and includes a central frame assembly. The central frame assembly includes a fuselage frame, with a mounting base fixedly installed on the outer side of each side of the fuselage frame. A main support leg assembly is provided on one side of each mounting base, and a secondary support leg assembly is provided at one end of the main support leg assembly. First hinge seats are fixedly installed on both sides of the bottom of the mounting base. The main support leg assembly includes a support leg frame, with first hinge members fixedly installed on both sides of the bottom of one end of the support leg frame. The first hinge members are hinged to the first hinge seats. Hinge holes are provided on both sides of the other end of the support leg frame. The secondary support leg assembly includes two support leg pieces, with second hinge members fixedly installed on the inner sides of the top of each of the two support leg pieces. The second hinge members are hinged to the hinge holes. This utility model enables the folding of the UAV frame during storage and transportation, reducing the storage volume and possessing high practical value.

The application discloses a coking ammonia distillation wastewater filter tar scale cleaning agent and a preparation method thereof, and relates to the technical field of industrial cleaning agents. The cleaning agent comprises the following components in mass percentage: N-methyl pyrrolidone 30-40%; ethylene glycol monobutyl ether 1-3%; sodium dodecyl benzene sulfonate 5-9%; sodium polyepoxysuccinate 1.5-3.5%; sodium silicate 0.5-1.5%; and deionized water in the rest. The application greatly reduces the content of ethylene glycol monobutyl ether and optimizes the compound system of the main solvent and the surfactant, completely solves the normal-temperature stratification problem of the traditional water-based cleaning agent, realizes VOC≤8.5%, cleaning rate≥98.5%, stable storage for≥6 months under the conditions of shade, ventilation and avoidance of direct sunlight, recyclable use for 2-3 times, mild preparation process without foaming problem, and easy industrial production.

The application discloses a protection and distortion control method and system during sound operation, and relates to the technical field of audio processing. An audio signal and a reference signal are acquired; the reference signal is preprocessed to obtain a trigger signal of a level effective value; a trigger threshold is acquired according to the trigger signal of the level effective value; the trigger threshold is adjusted to obtain a preset trigger threshold; the preset trigger threshold is dynamically adjusted according to a voltage value corresponding to a frequency of the audio signal to obtain a voltage value corresponding to the preset trigger threshold; and the audio frequency corresponding to the voltage value corresponding to the preset trigger threshold is a protected and distortion-controlled audio signal. The application realizes dynamic change of a high-frequency cutoff frequency of an audio high-frequency unit while maintaining the loudness of a sound field restoration of a sound system, and improves the protection and distortion control accuracy of the sound in a limit operation state of high power and long time.

The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.

The utility model relates to the technical field of parking garage equipment, and discloses intelligent lifting and transverse moving type three-dimensional parking garage equipment which comprises a bottom plate, a plurality of sets of installation columns distributed at equal intervals are fixedly installed on the rear side of the surface of the bottom plate, and two sets of second vehicle-mounted plates are arranged on the surface of the bottom plate. The three sets of first vehicle-mounted plates are arranged above the second vehicle-mounted plate, lifting devices are arranged on the three sets of first vehicle-mounted plates, the second vehicle-mounted plate and the first vehicle-mounted plates can be reasonably distributed and achieve transverse movement, position adjustment of a vehicle between different parking spaces is facilitated, a servo motor drives a lead screw to rotate, and the vehicle-mounted plates are driven by a servo motor to rotate. The first threaded sliding blocks and the second threaded sliding blocks on the lead screw can stably move up and down under guiding of the limiting grooves, the first vehicle-mounted plate is fixedly installed between the two sets of second threaded sliding blocks, and the stability and accurate positioning of the first vehicle-mounted plate in the lifting process can be guaranteed through connection of the fixing plate and the fixing frame; lifting and storing of vehicles are facilitated, and using safety and reliability are improved.

The utility model relates to impact breaker composite hammer head technical field discloses an impact breaker composite hammer head structure, including the crushing end, the top of crushing end is provided with fixed end, the top inside fixed end is provided with mounting hole. This impact breaker composite hammer head structure is provided with mounting pad, reservation groove, first fixed hole, mounting bolt and protective sleeve, and the protective sleeve can protect the mounting hole, prevent the mounting hole from wearing and affecting use, need when the protective sleeve is fixed make the first fixed hole on mounting pad and the first fixed hole inside reservation groove alignment, after alignment, the mounting bolt is screwed into the inside first fixed hole and mounting pad is fixed, since mounting pad is installed at the front and rear ends of protective sleeve, so the protective sleeve can be fixed in position by fixing mounting pad, solve the problem that the mounting hole on the hammer head is easy to wear, inconvenient to protect the mounting hole, easy to affect the use of hammer head.

The utility model discloses a multifunctional cell collector, including sample protection pipe and setting operation head at sample protection pipe top, the operation head bottom end center place is fixed with the collection rod, the collection rod perpendicular plug -in at sample protection pipe center place inside, and the length of collection rod is less than the length of sample protection pipe, the collection rod bottom end outside is fixed with cell collection swab head, through adding detachable, reusable cold storage protection device outside sample protection pipe, when not using, the device is frozen in the freezer, and the inside silica sol is in frozen state, after cell collection, collection rod is inserted to sample protection pipe, and the frozen cold storage protection device is sleeved outside sample protection pipe, and low temperature is provided continuously by silica sol, slows down cell metabolism, prevents active reduction or metamorphism, guarantees sample original state and integrity, improves quality, lays the foundation for detection analysis, and its characteristics reduce cost, reduce waste.

This utility model relates to the field of landscaping technology and provides a tree support frame for landscaping construction, including: a rectangular plate, and an adjustment component disposed on the side of the rectangular plate near the upper end. The adjustment component includes: a mounting arc plate fixedly disposed on the side of the rectangular plate near the upper end, and a semi-annular plate fixedly disposed on one side of the mounting arc plate; a T-shaped annular groove formed on the inner surface of the semi-annular plate, and a T-shaped semi-annular plate movably disposed inside the T-shaped annular groove; a servo motor is activated to drive a gear to rotate, and the gear drives a meshing semi-annular rack to move out inside the T-shaped annular groove, so that the T-shaped semi-annular plate drives two U-shaped plates to adjust their positions according to the direction of the sapling's tilt, so that the U-shaped plates can better support the sapling and prevent the sapling from tilting and affecting planting. The servo motor can drive the semi-annular rack to rotate forward and backward through the gear, so as to better adjust the support direction and improve planting efficiency.

The application discloses a mural reinforcing protective agent and a preparation method and application thereof, belongs to the technical field of cultural relic restoration, and can solve the technical problems that existing mural reinforcing materials cannot reinforce the lower layer structure of ancient murals and are prone to being attached to the surface of murals to cause the whitening of the surface pigments. The mural reinforcing protective agent comprises a bacterial cellulose carrier and Ba(OH)2 nanoparticles loaded on the bacterial cellulose carrier in situ. The application plays a reinforcing role on the lower layer structure of murals, realizes deep reinforcement of ancient murals, improves the protection effect, stability and durability, and the surface of the mural will not be whitened.