57results about How to "Convenient living" patented technology

Disclosed is an ultrafine fiber including lignin, a carrier polymer and a carbon material. The ultrafine fiber, which includes lignin, can exhibit the properties of lignin such as antibacterial property, biodegradability, etc. Accordingly, it can be used widely in medical materials such as nanofiber, nanofiber web, nanofiber sheet, etc. for wound healing of the skin's dermal layer. Also, the ultrafine fiber can be used in sheath of electric cables because it contains a carbon material and has superior conductivity. In addition, because the ultrafine fiber can hold a large quantity of water, it can be used in various fields including sanitary pads for women, diapers for babies and adults, etc.

The invention provides a mobile phone-based remote door opening system comprising a mobile phone terminal and an automatic door lock control device. The mobile phone terminal is wirelessly connected with the automatic door lock control device. The automatic door lock control device comprises a door lock control motherboard, a single chip microcomputer, a short message transmitting and receiving module and an electric control lock. The single chip microcomputer and the short message transmitting and receiving module are arranged on the door lock control motherboard. The short message transmitting and receiving module is electrically connected with the electric control lock through the single chip microcomputer. The mobile phone terminal is wirelessly connected with the short message transmitting and receiving module. The mobile phone-based remote door opening system further comprises a relay. The single chip microcomputer is electrically connected with the control loop end of the relay, and the switching loop end of the relay is electrically connected with the electric control lock. The invention further provides a corresponding mobile phone-based remote door opening method and a mobile phone-based remote door opening control method. According to the invention, remote door opening is completed with low cost through remote control of the mobile phone terminal on the electric control lock and adoption of very mature GSM network short message.

This invention discloses a method suitable for large-scale vote system by using internet. It can record the degree of the voter while make sure the security of the information. Therefore repeat vote will be checked out by system, and threatening or bribe will make no sense. The voter can also change the information during the polling day. The arithmetic which used for protecting data and for personal identification can be choosing random from open source one. The system can help to ensure the safety of the vote even if any part (the voter or the authoritative institution) cheat. Considering manual vote is adopted in many place, it will take some time for people to accept voting by internet. The invention is compatible of manual vote. So if an unexpected accident palsies the system, manual work can serve as a remedy.

The invention discloses a scaffold for repairing an articular subchondral bone. The scaffold is composed of a porous salt layer and a porous metal material layer from top to bottom. The porous metal material layer is a gradient porous metal material layer. The scaffold realizes articular subchondral bone bionic simulation. Through the scaffold, the articular subchondral bone can bear complex and large load, has good buffering functions, realizes good force transmission, has the strength higher than that of the porous non-metallic scaffold and solves the problem that the single-pore size high-porosity porous metal material has poor rigidity. The porous salt layer can be fused with the cartilage layer. The scaffold has good transfusion characteristics and a pore size conducive to cell and nutrient solution migration and keeping of appropriate pressure of the liquid in the joint. The pore size and material design of the scaffold are conducive to migration, colonization, differentiation and proliferation and is a real articular subchondral bone repair and regeneration scaffold.

The semiconductor refrigerator for sleeping room refrigerating with semiconductor thermoelectric device features the circulating heat pipe technology, no any mechanical motion and no noise. Radiating fin and circulating heat pipe radiator are constituted into various types of radiating fin-circulating heat pipe and casing-circulating heat pipe temperature difference complex, and the connecting skeleton of the temperature difference complex is assembled to the temperature difference interface of heat insulated container to constitute the main body of semiconductor refrigerator for sleeping room. The present invention solves the problems of heat dissipation and heat insulation in semiconductor refrigerating, and obtains high refrigerating performance. The semiconductor refrigerator for sleeping room may be used to reach temperature as low as 5deg.C, and the environment temperature of 32deg.C and may be used conveniently in sleeping room.

The invention discloses an air cleaning device capable of conveniently treating deposited dust, which solves the problem that deposited dust is difficult to treat in the current air cleaner. The air cleaning device capable of conveniently treating deposited dust, comprises a machine body, an air inlet and an air outlet, and an ultraviolet tube, a fan, a fan motor, an active carbon filter layer and an anion generator are arranged in the machine body. The air cleaning device is characterized in that a drawer capable of storing deposited dust is arranged in the machine body, thus solving the long-time problem that deposited dust is difficult to treat.

The invention provides a control method, device and system of an intelligent housing system, a storage medium and equipment. The method includes: generating control instructions according to control operation triggered by a client device, wherein the control instructions carry device identification of intelligent terminal devices to be controlled; acquiring potting marks of intelligent potted plants connected to the intelligent devices to be controlled according to the device marks, sending the control instructions to the corresponding intelligent potted plants so that the intelligent potted plants can start an atmosphere rendering device after receiving the control instructions and respond to instruction sending operation of the client device, and indicating that the intelligent potted plants perform the control function on the intelligent terminal devices and search a preset device list according to the device marks to acquire address information of the intelligent terminal devices to be controlled for broadcast. By the arrangement, all the intelligent terminal devices of the intelligent housing system are controlled through the intelligent potted plants, article deployment and attractiveness of the living environment are unaffected, and convenience is brought to family living while family atmosphere is enhanced.

The invention relates to the technical field of environment-friendly decoration materials, and discloses an interior decoration partition wall which comprises a wall. A mounting component is inlaid inthe top of the front surface of the wall, a through slide groove with an arc-shaped top is formed in the middle of the bottom of the mounting component, a base plate, a connecting plate I, a connecting plate II and a tail plate are sequentially clamped with the mounting component via the slide groove from left to right, and positioning strips which are matched with the slide groove are fixedly connected with the tops of the base plate, the connecting plate I, the connecting plate II and the tail plate. The interior decoration partition wall has the advantages that positioning and slide effects can be realized by the slide groove and the positioning strips, the base plate, the connecting plate I, the connecting plate II and the tail plate can be conveniently clamped with the bottom of themounting component under limit effects of the slide groove, accordingly, the problem of high consumption of working hours due to the fact that partition walls need to be manually aligned and drawn together can be solved, large quantities of human and material resources can be saved, and the mounting convenience can be improved; errors in manual drawing procedures can be prevented, and the mountingprecision of the interior decoration partition wall can be improved.

The object of the present invention is to restore soil and prevent contamination of ground water by decomposing an organic compound with decomposing microorganisms in soil contaminated with an agricultural chemical or other organic compound.The present invention discloses an accumulation method for isolated decomposing microorganisms comprising: accumulating decomposing microorganisms of a species able to decompose a specific organic compound in a porous material that is able to adsorb said organic compound while also having a countless number of pores that facilitate habitation by said decomposing microorganisms; wherein, by inoculating only said decomposing microorganisms into a porous material, forming an accumulation layer composed of that inoculated porous material, and perfusing that accumulation layer with an inorganic salt medium having only said organic compound for its carbon source and nitrogen source, said decomposing microorganisms are accumulated in the porous material in a state of high density, and a decomposing microorganism retentive carrier obtained in this manner is buried directly in contaminated soil.

The invention discloses an internal wall heat-insulation fireproof functional wallboard with an electro-thermal film. The wallboard comprises an inner wallboard body and a facing material, wherein the inner wallboard body is a composite plate and comprises a heat-insulation flame-retardant plate and a base plate, the heat-insulation flame-retardant plate and the base plate are adhered together through an adhesive layer, a conductive area is arranged on the base plate, and the conductive area is covered with the electro-thermal film; the surfaces of the base plate and the conductive area are coated with the facing material, and the electro-thermal film is electrified to generate heat. By means of the structure, heat and cold of a wall can be effectively prevented from invading indoors, and the temperature of the indoor environment is kept normal; meanwhile, the electro-thermal film is arranged on the base plate and has a heating function, the functional wallboard capable of achieving automatic heating and intelligent temperature control is formed, the indoor temperature is effectively adjusted, and the energy consumption is greatly reduced; the heating area is large, and the functional wallboard has excellent heat insulation, waterproof and dehumidifying functions, so that the heat is not absorbed by the wall and is released outdoors, a constant comfortable temperature is kept in a room, and the room is particularly suitable for babies or elder people to live in.

The invention is a three-in-one photoelectric air purifier, and its machine body of a square column structure comprises: air pumping air drum, power-driven motor, control circuit board, switch, indicator lamp, pole-end ultraviolet ray tube, air accumulating frame, power line, and negative high voltage discharging carbonized fiber line, there is air inlet arranged at the front end of the machine body, and washable filter screen and activated carbon filter screen are arranged in order inside the air inlet; the top end of the back machine body is arranged with air exhaust outlet, and air filter frame and negative high voltage discharge carbonized fiber line are arranged in order inside the air exhaust outlet; the air accumulating frame is arranged in the middle of the machine body and contains at least three groups of pole-end ultraviolet ray tubes; the air pumping air drum and power-driven motor are arranged in the middle of the back machine body, and the control circuit board is arranged on the top of the machine body. The invention can further filter out harmful particles, bacteria, viruses, and so on.

The present invention discloses a housing control method and system based on the Internet of Vehicles. The method comprises: starting a navigation module to determine a driving intention according toan action command entered by a user to estimate an arrival time, and simultaneously determining that an intelligent housing functional requirement is turned on, a vehicle calculation module sends a sensing data request to an indoor calculation module, the indoor calculation module receives the request and triggers an indoor sensing module to collect sensing data and send the sensing data to the vehicle calculation module in real time, the vehicle calculation module performs fusion and extraction on the sensing data to obtain visualized data, generates a corresponding execution instruction, andsends the execution instruction to the indoor calculation module in real time, a vision module receives the visualized data to display in-vehicle information in real time, the indoor calculation module allocates the execution instruction to each corresponding electric appliance control module, and the control module performs automation control on an electric appliance.

The invention relates to an automatic opening wall-bed which saves the space of a bedroom and can be hidden. The invention is characterized by a groove in the wall, a specially designed bed according to the groove in the wall, a rotary shaft connected with the bed at the bottom part of the groove in the wall, a collision automatic locking device at the upper part of the groove in the wall, a small-sized motor with a driving wheel arranged at the upper part in the groove in the wall, a switch of a controlling motor, and a nylon cord matched with a motor driving wheel used for pulling up and putting down the wall-bed. The invention has the advantages that: 1. the automatic opening wall-bed has skillful construction and humanized design; 2. the automatic wall-bed greatly saves the floor space of the bedroom; 3. the automatic wall-bed can be opened for people to rest conveniently in the daytime or night; 4. the automatic wall-bed can automatically open or hide without the help of manpower; 5. the match of the automatic wall-bed and the dwelling construction of residential district can be greatly received by dwellers and have strong business exploitative prospects.

The invention relates to an L-shaped sectional modularized flat. The modularized flat comprises a supporting framework and a cabin, a plurality of cabin panels are put together to form the cabin, moreover, the cabin is placed as a whole on a horizontal plane, the cabin panels are detachably connected with the supporting framework, the cabin comprises at least one sleep cabin and at least one activity cabin, both the activity cabin and the sleep cabin are cuboids, the activity cabin is two times higher than the sleep cabin, the sleep cabin and the activity cabin are arranged closely, one side of the body of the sleep cabin is provided with a first opening, the panel of the body of the activity cabin is provided with an activity cabin opening communicating with the first opening, and the panel, which is perpendicular to the opening of the activity cabin, of the body of the activity cabin is provided with a doorway entering the body. The L-shaped sectional modularized flat disclosed by the invention has the advantage that the L-shaped sectional modularized flat is integrated with rest and activity, protects personal privacy, sufficiently utilizes a floor space and a three-dimensional space, saves materials and creates a joint habitation environment.

Cylindrical nano-optoelectronic air purifier, the body of cylindrical structure includes exhaust fan, control circuit board, dust filter, switch, indicator light, extreme ultraviolet radiation light emitting tube, air concentrator, negative extremely high voltage carbon fiber wire, power supply Input socket, the body is composed of a front body and a rear body, the front body is provided with an air outlet and the rear body is provided with an air inlet, the negative high-voltage fiber is fixed in the air outlet, and the extreme ultraviolet radiation light emitting tube is fixed in the air inlet, pumping The air fan is fixed on the inner surface of the air outlet in the body. The negative ions generated by the negative ion generator can promote biochemical effects (increase the amount of negative ions inhaled during breathing) and reduce the secretion of hormones that can cause depression and fatigue. The extreme ultraviolet radiation light tube with a wavelength of 253.7 nanometers can reduce bacteria, viruses and mold in the air.

The invention provides insect breeding equipment for observation and research. The insect breeding equipment comprises a device body and a protective atomizing column, a fixed placement seat is mounted at the bottom of the device body, an antiskid rubber pad is mounted at the top of the fixed placement seat in an embedded manner, a clear water containing tank is fixedly mounted at the top of the fixed placement seat, and a clear water draining port is arranged on the lower portion of the left side wall of the clear water containing tank; a clear water inlet is arranged on the upper portion ofthe right side wall of the clear water containing tank, and a humidity control box is fixedly mounted at the center below the inside of the clear water containing tank; four atomizing humidifiers areannularly arrayed at the bottom inside the clear water containing tank, and a draining pipe is arranged at the top of each atomizing humidifier and inserted into the bottom of a breeding protection box. By arranging the breeding protection box, convenience is brought to fixing and mounting of an outside temperature irradiation lamp; breeding space is separated through isolating partitions, so thatconvenience is brought to adjust humidity and temperature according to actual conditions to observe change of insects inside, and convenience is brought to comparing data of different breeding spaces.

The invention provides a multi-functional movable cabinet wall. The multi-functional movable cabinet wall comprises a guide rail which is fixedly installed and a plurality of cabinet bodies capable of sliding along the guide rail. Doors are arranged on the side faces of the cabinet bodies, and when the doors are closed, a closed independent space can be formed between every two adjacent cabinet bodies. In the multi-functional movable cabinet wall, the guide rail can be fixed to any fixed face, when the guide rail is needed, the cabinet bodies are slid to appropriate positions along the guide rail, and the doors are closed; one ends of the doors are fixed to the cabinet bodies, and the other ends of the doors are movably connected with the adjacent cabinet bodies; the closed independent space is formed between every two adjacent cabinet bodies, so that people residence or work is facilitated; and when the closed spaces are not needed, all cabinet bodies can be slid to one end of the guide rail to be concentrically stored, and the occupied area is small, normal use of an original room is not influenced. Thus it can be seen that the multi-functional movable cabinet wall has flexible use spaces, and residence requirements of multiple people can be met within small spaces, and the structure of an original house does not need to be changed; and operation is easy, and the convenient and practical effects are achieved.

The invention belongs to the technical field of carpet beaters, and particularly relates to a carpet beater for treating dust with airflow. The carpet beater comprises a base, a support and an annularbracket, wherein the top of the base is fixedly connected with the support; the top of the support is fixedly connected with the annular bracket; a plurality of sets of telescopic springs are fixedlyconnected to the inner wall of the annular bracket; and a beating mechanism is arranged among the multiple telescopic springs. According to the invention, by arranging the beating mechanism and a buffer type carpet beating mechanism, airflow in a waist drum beating block flows to a carpet airflow blowing mechanism through airflow holes under the beating effect, and dust is treated with the airflow; and therefore, the operation is superior to that in the prior art and is more convenient, beating does not take longer time, the efficiency can be improved, and the dust left at the bottom can be treated.

The cylindrical nanometer photoelectronic air purifier has inside cylindrical body exhaust fan, control circuit board, dust isolating net, switch, pilot lamp, ultraviolet ray emitting tube, air collector, negative pole high voltage carbon fiber line and power input socket. The cylindrical body is divided into front body and back body, the front body has air outlet, and the back body has air inlet. The negative pole high voltage fiber is fixed inside the air outlet, the ultraviolet ray emitting tube is fixed inside the air inlet, and the exhaust fan is fixed in the inner surface of the air outlet. The negative ion generator produces negative ion capable of promoting biochemical effect and reducing the secretion of hormone resulting in depression and fatigue. The ultraviolet ray emitting tube generates 253.7 micron wavelength ultraviolet ray to kill the bacteria, germ and mold in the air.

The invention discloses a preparation method of a shell water-based coating material taking mesh macromolecules as a film-forming material. The method comprises the following steps: S1, putting a dispersing agent, shell powder and deionized water into a container with a stirring device, mechanically stirring for 1-2 hours, adding corresponding parts by weight of a filler, and continuously stirringfor 30-60 minutes to obtain a mixture. According to the invention, the water-based coating material has the advantages that a mesh macromolecule film-forming material is added into a water-based coating material, and spontaneously forms a shell-core micelle with a special three-dimensional space structure and high thermodynamic stability in a water phase, and diversified functional molecular groups are embedded into the surface of the micelle by combining with amplification of molecular modification, so that the mesh macromolecule film can be quickly cured to form a mesh-shaped structure under the induction of external fields such as heat, air and the like, shell powder is attached to holes to generate a function of adsorbing water and formaldehyde so as to reduce the formaldehyde contentin a decorated room, so that the room is beneficial for people to live in.

The invention relates to a streetlamp, in particular to a multifunctional LED streetlamp. A bird nest is fixedly connected to the top end of a lamp pole of the streetlamp, it is convenient for birds living near the streetlamp to live in the set nest so that the situation that droppings of the birds drop anywhere can be avoided, it is beneficial to surviving of the birds in the city, and the purpose of beautifying of the environment and the purpose of ecological harmony can be achieved. A bird nest body capable of being detached separately is arranged in the bird nest and is made of soft materials such as rubber which is more suitable for living of the birds, regular replacement of the bird nest is facilitated, the phenomenon that the bird nest is dirtied and consequently the road surface of the lower portion of the streetlamp and other equipment are contaminated is avoided, and the cleanness of the environment is protected; and a hotspot WiFi network is deployed through the streetlamp pole, the 3G mobile network telephone traffic load can be improved effectively, conversion of the WiFi network from point to face is achieved quickly, the coverage range of a transmission network is broadened through municipal pipelines, the WiFi hotspot coverage region is enlarged, and more convenience is provided for people on the aspect of the free fast Internet access.

The invention discloses environment-friendly wallpaper, and relates to the technical field of wall surface decoration. The environment-friendly wallpaper comprises a waterproof coating, a base layer,a conductive layer, a bamboo charcoal fiber layer, an antibacterial aromatic layer, a sound absorbing layer, a photocatalytic purification layer and a protective layer which are pasted sequentially from the bottom layer to the top. According to the environment-friendly wallpaper, the problems of low decontamination ability and poor timeliness in the prior art are solved, the environment-friendly wallpaper emits aroma in use, absorbs moisture, and is breathable, and is antibacterial and antiseptic, harmful substances of air can be absorbed, indoor air can be purified, fresh indoor air is kept,environment protection is achieved, the mute and anti-static effects are also achieved, and the living life of people is facilitated.

The floor dust collector has ultraviolet device to kill bacteria, viruses and fungi in the air and in the dust inside the garbage bay. Inside the streamlined structure, there are sucking air wheel, motor, circuit board, electronic circuit module, change-over switch, filter net, garbage box and garbage bag. The floor dust collector has also long external movable handle and external dust collecting unit. It has also two ultraviolet radiating tubes with transparent lens set separately inside the body and the external dust collecting unit. The ultraviolet radiating tubes generate ultraviolet ray of 253.7 nm wavelength to kill bacteria, viruses and fungi effectively and to create clean environment.

The small fresh air handling unit comprises a fresh air handling unit shell, a fixed base is fixedly connected to the bottom end of the fresh air handling unit shell, a purification cavity is formed in the fresh air handling unit shell, and an upper cover plate is rotationally connected to the side wall of one side of the purification cavity through a rotating shaft; a filter screen is arranged between the front inner side wall and the rear inner side wall of the purification cavity, a motor is fixedly arranged on the side wall of the side, away from the upper cover plate, of the filter screen, the output end of the motor is in threaded connection with a rotating shaft, and a plurality of fan blades are fixedly connected to the side wall of the other end of the rotating shaft; and a plurality of ventilation holes are formed in the upper cover plate and the side wall of the other side of the purification cavity. The most comfortable environment can be created, living of people is facilitated, water in the water tank is convenient to replace, bacteria breeding caused by long-time standing due to the fact that the water in the water tank is difficult to replace when air is humidified can be avoided, and therefore health of people is facilitated.

The invention discloses an indoor environment automatic adjustment control system, which includes a processor and air conditioning equipment, lighting adjustment equipment, memory, display screen and alarm device respectively connected to the processor, and the air conditioning equipment includes The sensor group and the automatic window opener, and the lighting adjustment equipment include a brightness sensor, an electromagnetic switch and a light bulb respectively connected to the processor. The present invention solves the problem in the prior art that there is no device for overall control of the indoor environment, and provides an automatic adjustment control system for the indoor environment. When it is applied, it detects various parameters in the indoor environment, and then combines the above-mentioned detected parameters with the Compared with the set threshold, when the threshold is exceeded, an audible and visual alarm is issued, and various parameters are automatically adjusted, so that the overall indoor environment is at the threshold set by the user, thereby ensuring the consistency of the indoor environment and bringing more benefits to the user's living life. convenient.

The invention discloses a fibrofelt and a sheet material, and preparation methods thereof. The fibrofelt comprises a fibrofelt substrate and a coating, wherein the coating is attached to the fibrofeltsubstrate; the fibrofelt substrate is a glass fibrofelt; the coating comprises the following raw materials by weight: 10-19 parts of polyethylene glycol, 4 to 8 parts of acrylic resin, 10 to 20 partsof diatom mud, 10 to 15 parts of expanded vermiculite, 5 to 10 parts of titanium dioxide, 16 to 20 parts of tourmaline, 0.02 to 0.04 part of zinc oxide and 25 to 40 parts of water. The preparation method for the fibrofelt comprises the following steps: adhering the coating onto the surface of the fibrofelt substrate and carrying out drying. The preparation method for the sheet material comprisesthe following steps: applying an adhesive onto the surface of a decorative plate, placing the fibrofelt to obtain an assembly, and then carrying out hot pressing. The fibrofelt can automatically release negative oxygen ions. The sheet material made of the fibrofelt can purify air, significantly improve the habitability of rooms, and allows indoor air to be as fresh as air in a park or a forest.

A porous metallic bar is made of a porous metallic material. The porous metallic bar includes two portions; one portion is a circular bar-shaped portion, and the other portion connected to the circular bar-shaped portion is a thread portion; threads are arranged on an outer part of the thread portion; the outer diameter of the threads is greater than the inner diameter of the circular bar-shaped portion; the porous metallic material is a hierarchical pore metallic material; a hierarchical pore metallic material body includes all levels of pore cavities which are graded according to the material pore size, and all levels of cavity walls forming the pore cavities; cavity walls of upper level pore cavities formed by three-dimensional spaces are made of a lower level porous metallic material; pore cavities at each level communicate with each other and all levels of pore cavities communicate with each other; and the number of levels is at least two. The porous metallic bar allows tissues to overgrow in the inner part of an implant body, tight fusion between the implant body and a thighbone can be achieved, the interface is stable and firm, loosening can be avoided, pain of a patient can be avoided, and the time of artificial hip joint replacement is delayed.

The invention provides a multifunctional cat nest capable of being quickly split and recombined, and relates to the technical field of cat nests. The multifunctional cat house comprises a bearing bottom plate, limiting side plates, a rear back plate and a protective top plate. The number of the limiting side plates is two, the two limiting side plates are arranged on the upper side of the bearing bottom plate and distributed at the two ends of the bearing bottom plate, and the protective top plate is arranged above the bearing bottom plate and connected with the two limiting side plates. The bearing bottom plate, the protective top plate and the two limiting side plates form an annular structure, and the rear back plate is arranged at one opening of the annular structure; inserting blocks are arranged on the upper side, the lower side and the rear side of any limiting side plate, inserting grooves are formed in the bearing bottom plate, the protection top plate and the rear back plate, and the inserting grooves are matched with the inserting blocks in an inserted mode. The cat nest can be freely assembled or disassembled and can be recycled, and resources are saved.

The invention provides a cat house capable of deodorizing and insect repelling. The cat house comprises a bottom plate; the upper surface of the bottom plate is provided with a house body; the upper surface of the bottom plate is also provided with a nano-photocatalyst coating; the rear surface of the house body is provided with a transparent window; the right side surface of the house body is provided with an entrance / exit; the upper side of the right end surface in the house body is provided with an infrared sensor; the left side of the upper end in the house body is provided with a metal leakage-proof screen; an insect repellent bag is placed at the lower end in the metal leakage-proof screen; the upper end of the metal leakage-proof screen penetrates the upper side of the house body and is exposed at the upper side of the house body; a cover is movably clamped to the upper end of the metal leakage-proof screen. The cat house capable of deodorizing and insect repelling is reasonablein structural design and has the functions of all-weather bacterium resistance and disinfection, mold prevention, deodorization and air purification; repellent odor emission can be accelerated to repel insects while a pet leaves the pet house, so that the environmental quality in the cat house can be improved; the temperature in the cat house can be adjusted, so that the practicality is great.