39results about How to "Avoid hygienic corners" patented technology

The invention discloses an aseptic cold filling valve. A guide pressing sleeve of the valve is fixed at the upper part of a valve body; a valve core is arranged in the guide pressing sleeve and the valve body and is supported in the guide pressing sleeve by a linear bearing; a logistics channel is formed between the valve core and the valve body; a spring pressing ring is arranged at the top of the valve core and then is connected with a piston of a filling cylinder; a filling cylinder body is relatively fixed with the valve body; the two ends of an open valve spring are respectively connected with the spring pressing ring and the guide pressing sleeve; a sealing ring is arranged at the bottom end of the valve core; a filling nozzle is arranged at the lower part of the valve body; when running downwards to a limiting position, the valve core is sealed by the sealing ring and the inner wall at the port of the filling nozzle; a feeding pipeline communicated with the logistics channel is arranged at the side of the valve body; and a flow meter is arranged on the feeding pipeline. The flow meter can be used for accurately metering the filling flow rate of every bottle, so that the metering accuracy is improved; and the logistics channel is almost completely arranged in the valve body and is smooth in structure, so that hygienic dead angles can be avoided, and the washing efficiency is improved.

The invention relates to a portable tea cup, formed by soup cup and tea cup, wherein the soup cup is above the tea cup while they are sealed connected; the soup cup has sealing cover; the bottom of soup cup has through hole through to the tea cup to form water channel and filter network on channel; the water channel is arranged with bidirectional valve. The invention has simple structure and simple application.

The invention relates to a bookshelf cleaning device which effectively solves the problem of bookshelf cleaning inconvenience. According to the technical scheme, the bookshelf cleaning device comprises supporting rods, wherein a lower box body and an upper box body are arranged on the supporting rods, and a first rotating shaft and a second rotating shaft are arranged on the lower box body and theupper box body; the first rotating shaft is provided with a second sleeve, the second sleeve is connected with a clamping device through a gear, the lower end face of the first rotating shaft is provided with an annular groove, the upper end face of the second rotating shaft is provided with vertical rods, and the upper ends of the vertical rods are disposed in the annular groove; the first rotating shaft can drive the second rotating shaft to rotate under the action of pins; the second rotating shaft is sleeved with a lifting device matched with the clamping device; and a baffle is arrangedin the lower box body and provided with a dust absorption rod, the dust absorption rod can move in the lower box body frontwards, backwards, leftwards and rightwards, the rear end of the dust absorption rod is matched with a flywheel and a thread wheel through a rope, and reverse retraction is realized. The bookshelf cleaning device has the beneficial effects of being ingenious in structure, convenient to operate, high in practicability, capable of effectively solving hygienic dead angles of book and bookshelf contact parts, good in cleaning effect and high in working efficiency.

The invention discloses a bottle cap washing and disinfecting machine, which comprises a cleaning tunnel, wherein a cap conveying chute is arranged in the cleaning tunnel; a medicament liquid spray-washing device, a clean water spray-washing device and a sterile blow-drying device are arranged in the cleaning tunnel along the bottle cap advancing direction; the medicament liquid spray-washing device comprises a liquid separation pipe located in the cleaning tunnel; inclined nozzles are arranged on the liquid separation pipe along the bottle cap advancing direction; and vertical spraying pipes, which are approximately vertical to the bottle cap advancing direction, are arranged on the liquid separation pipe between adjacent inclined nozzles. According to the invention, vertical spraying pipes are arranged on the liquid separation pipe between the adjacent inclined nozzles, when the medicament liquid spray-washing device sprays and washes to make the bottle cap move forward and washes and disinfects the bottle cap at a large area through the inclined nozzles, and the medicament liquid sprayed by the vertical spraying pipes toward the bottle cap direction can comprehensively wash and disinfect the inside of the bottle cap, thus the sanitation dead space is avoided, the bottle cap disinfection effect is improved and the final packaging quality is guaranteed.

The invention discloses an inspection door for mechanical equipment. The door comprises a flange and a cover plate, an inspection port is formed in the center of the flange, the cover plate is arranged on the inspection port of the flange, and a sealing ring is arranged between the flange and the cover plate; a press rod is arranged on the cover plate and comprises an upper press rod body and a lower press rod body, the tail of the upper press rod and the tail of the lower press rod body are connected together, the cover plate is fixedly connected with the press rod through a middle connectionshaft, and the middle connection shaft penetrates through the portion between the upper press rod body and the lower press rod body; the end of the press rod is hinged to the flange through a movableshaft, and a manual switch device is arranged at the tail of the press rod; a step flange ring formed with the flange at a time is arranged at the outer circle of the flange, a 45-degree slope is arranged at the inspection port of an inner ring of the flange, the press rod is formed through edge folding of one-time formation, and the end of the upper press rod body, the end of the lower press rodbody and the movable shaft form a triangular strengthening structure. The inspection door is stable in structure, more convenient to operate and easy to clean. Sanitary dead corners are avoided, theinspection door better accords with the sanitation requirements, and hidden sanitation dangers are reduced to the greatest limit.

The invention relates to the technical field of heat exchanger production, in particular to an anti-blocking heat exchanger. The anti-blocking heat exchanger comprises a three-stage filter and a heatexchanger body, wherein the left end of the three-stage filter is in communication with a liquid inlet metal pipe; a control valve is arranged on the liquid inlet metal pipe; a flow regulating switchis arranged at the top end of the control valve; the right end of the three-stage filter is in communication with a liquid outlet metal pipe; and the liquid outlet metal pipe is in communication withthe heat exchanger body. According to the anti-blocking heat exchanger, online disassembly and assembly of a filter pipe on the filter can be carried out without considering whether the three-stage filter and the heat exchanger are working or not, liquid does not flow out in the mounting and replacement processes, high airtightness is achieved, the disassembly, assembly and replacement operationsare very simple, convenient and flexible at the same time, and the maintenance cost is low. In addition, impurities adhering to the outer wall of a filter element can be flushed out with the back flushing function, so that blockage of the filter element can be prevented. Meanwhile, radiating fins can increase the heat dissipation area and improve the heat exchange efficiency, and can be detached for cleaning, so that sanitary dead angles are avoided, and daily cleaning and maintenance are facilitated.

The invention aims to provide a bathtub convenient to install and a manufacturing process of the bathtub. The bathtub comprises a bathtub body, wherein the bathtub edge of the bathtub body is providedwith a downward extending surrounding plate, and the surrounding plate and the bathtub edge of the bathtub body are sequentially connected to form a whole. The surrounding plate and the bathtub edgeof the bathtub body are sequentially connected to form the whole, and no gap exists between the surrounding plate and the bathtub edge of the bathtub body, so that water does not enter the bathtub; inaddition, by adding the surrounding plate, the outer wall of the bathtub body is blocked, and the overall appearance and no sanitary dead angle are completely achieved. Due to the fact that the outersurrounding late is not formed through hot plastic uptake of a traditional process but is formed through local heating and bending, the manufacturing process is simple, and energy is saved. Furthermore, after the bathtub is bought by a user, the bathtub can be directly put on the ground, and the advantage of convenient installation and use is achieved without peripheral supporting table building.

The invention relates to an energy-saving and environment-friendly heating stove. A stove body is arranged on a base (9), the back face of the stove body is provided with a back door (1), the upper part of the stove body is provided with a material box (4), the lower part of the stove body is provided with a drawer (3), the left outer side face and the right outer side face of the upper part of the stove body are respectively provided with an elastic clamping seat (8), an adjusting clamp (5) is arranged on the elastic clamping seats (8), an ignition box (6) is arranged in the stove body, the upper part of the ignition box (6) is connected with the material box (4), the lower part of the ignition box (6) is connected with the base (9) through bolts, a front door (2) is arranged on the front part of the ignition box (6) through hinges, an air duct plate (7) is arranged on the back part of the ignition box (6), an air intake fan (10) and an exhaust fan (11) are connected with the base (9) through bolts, a speed-changing motor (12) is arranged on the lower part of the material box (4), and a temperature sensor (13) is arranged on a hopper of the material box (4). The heating stove has the advantages of simple structure, low manufacturing cost, high thermal efficiency and good energy-saving and environment-friendly effects, and can be used conveniently, and the energy consumption is reduced effectively.

The invention discloses a flat mop suite. The flat mop suite comprises a mop and a mop bucket; the mop bucket comprises a bucket body and an inner bucket mounted in the bucket body; a clean water containing cavity and a sewage containing cavity are formed in the barrel body, the water feeding channel is arranged in the range of the barrel body, the lower end of the water feeding channel is communicated with the clean water containing cavity, the upper end of the water feeding channel is communicated with an opening in the upper end of the inner barrel, the inner barrel is provided with a flow blocking component, and in the process of the inner barrel moving downwards relative to the clean water containing cavity, the water level in the water feeding channel rises to exceed the opening in the upper end of the inner barrel through the flow blocking component, so that water in the water feeding channel is poured into the inner barrel; a squeezer for cleaning and / or squeezing the wiping object is arranged above the opening in the upper end of the inner barrel on the barrel body; and when the mop plate moves upwards and / or downwards relative to the squeezer, water adsorbed on the wiping object can be squeezed out by the squeezer and discharged into the sewage containing cavity. The mop can be cleaned with clean water, the structure is simple, and operation is convenient.

The invention relates to the technical field of robots, and provides a traveling robot. The traveling robot comprises a travelling robot body and a running mechanism, wherein the travelling robot body comprises a telescopic water spray pipeline, a water storage tank, a cleaning device, a garbage screening device, an attraction type garbage collection tank and a controller. The traveling robot is characterized in that the telescopic water spray pipeline is positioned at the middle part of the traveling robot; the cleaning device, the garbage screening device, the attraction type garbage collection tank and the controller are sequentially arranged at the front end of the bottom of the traveling robot; the cleaning device is provided with a synchronous motor and a plurality of mops; the running mechanism is arranged at the bottom of the traveling robot, and is a crawler-type running mechanism or a wheeled running mechanism, which is driven by electricity. Compared with the prior art, the traveling robot disclosed by the invention has the advantages of being simple in structure, high in intelligent degrees and high in automation degrees, the traveling robot can be remote-controlled for water spraying and cleaning operations, so that the burden of an operator is effectively reduced, and the time is saved.

The invention discloses a household garbage container cleaning device and a cleaning method thereof. The household garbage container cleaning device comprises a first portal frame fixed in a cleaningfield; a left medicament spraying pipe and a right medicament spraying pipe are arranged on the inner sides of stand columns on the left and right sides of the first portal frame; a pair of rails is fixed in the cleaning field in parallel at intervals, and a lane is between the pair of rails; a second portal frame walks on the pair of rails; a left side surface cleaning water spraying pipe, a right side surface cleaning water spraying pipe and a top surface cleaning water spraying pipe are arranged on the inner sides of stand columns on the left and right sides of the second portal frame and on the inner side of a top beam; and a control device controls startup and stop of a medicament pump station and a water pump station. Through effective cleaning of all parts of household garbage containers, sanitation dead angles are prevented.

The invention discloses a yoghourt machine and a using method thereof. A stirring container protrusion perpendicularly extending upwards is arranged at the bottom of a stirring container of the yoghourt machine, a stirring head is detachably arranged on the stirring container protrusion in a sleeving manner, a power device is used for driving the stirring head to rotate, and sufficient stirring onmixed liquid in the stirring container is realized. Besides, a temperature sensor is arranged at the bottom of the stirring container to monitor the temperature of the stirring container, so that theheat insulation condition under different environment can be guaranteed to be constant. The stirring device which can be simple to detach is arranged, so that hygienic dead angles are eliminated, theyoghourt machine can be breezily cleaned thoroughly after being used for making yoghourt, and besides, in the yoghourt making process, mixed liquid of milk and lactic acid bacteria can be guaranteedto be sufficiently stirred. A temperature control device with the temperature sensor is arranged, so that the heat insulation condition in the yoghourt fermentation process can be guaranteed to be constant, and high-quality yoghourt can be obtained.

The invention discloses a quantitative filling system and a filling method thereof, and belongs to the field of automatic packaging. The system comprises a material box, discharging assemblies and a pressure assembly, wherein the material box is a closed cavity and is suitable for containing material liquid; the plurality of discharging assemblies are arranged at the bottom of the material box; the pressure assembly comprises an air source, an air path used for communicating the air source with the material box, a pressure release valve arranged on the material box and communicating with the air path, and a pressure stabilizing sensor assembled in the material box. The pressure in the material box is controlled to be stable through the pressure assembly, so that it is guaranteed that the flow speeds of all filling heads are consistent, and the filling precision reaches the standard; and when air inflation is needed, a pressure gauge can provide a signal to the pressure source to provide air pressure, after the pressure in the tank reaches the standard, air inflation is stopped, the pressure stabilizing meter is used for controlling, excessive pressure can be automatically discharged, stability is guaranteed, and the filling precision is high.

The invention discloses a flat mop, which relates to the field of cleaning tools and comprises a mop head and a mop rod. The mop head is connected to the mop rod. The connecting rod, the locking sleeve and the second connecting rod are sequentially fitted and connected as one. One end of the second connecting rod is connected to the mop head. There is a self-locking device inside the locking sleeve, and one end of the self-locking device is sleeved on the first connecting rod. Inside, the other end of the self-locking device is sleeved in the second connecting rod. The structure of the invention is simple and compact, and the connection effect is good. The length can be adjusted according to the use occasion. , To avoid the appearance of hygienic dead ends, the locking of the self-locking device can be completed only by gently twisting the self-locking device through the lock sleeve, and the mop rod can be quickly assembled, and the assembly process is simple.

The invention relates to a book dust collector, which effectively solves the problem of difficulty in cleaning the contact parts between bookshelf and books. The technical solution includes a flat plate with a support rod on the flat plate, a lower box and an upper box on the support rod. The lower box and the upper box are arranged on the support rod. The box has a rotating shaft, a second sleeve on the rotating shaft, a first gear on the second sleeve, the first gear meshes with a second gear, the first gear and the second gear are connected with a clamping device, the lower end surface of the first gear There is a check device, and the rotating shaft is equipped with a lifting device that cooperates with the clamping device. There is a baffle in the lower box, and a vacuum rod on the baffle. The vacuum rod can move forward, backward, left, and right in the lower box. The rear end of the vacuum rod By cooperating with the rope, the flywheel and the wire wheel, reverse retraction is achieved; the invention has the advantages of ingenious structure, convenient operation and strong practicability, and can effectively solve the sanitary dead corners of the contact parts between books and bookshelves, with good cleaning effect and high work efficiency.

A water guide plate for a cleaning tank relates to a water guide plate. At present, the filter holes on the water guide plate are all over the cloth. When the filter holes are located under the spray device, it is very troublesome to clean, and it is easy to remain and cause the growth of bacteria. A first through hole and a second through hole are provided on the water guide plate of the present invention, the first through hole is located in the middle of the water guide plate, and the second through hole is located at the side of the water guide plate; The water guide plate is divided into a light plate area without filter holes and a filter area with filter holes. The partial area of ​​the water guide plate of this technical solution is perforated, and the strength of the water guide plate is improved while not affecting the water; when the cleaning device is located below a position of the light plate area, since no cleaning is required, the sanitary dead corner is avoided. Reduces residue residue and improves cleaning power.

The invention provides an isolation device for preventing infection for clinical medicine. The isolation device includes a device body, a separation assembly and a shielding assembly. The device bodyincludes an isolation cover, a bed plate and supporting legs. The separation assembly includes a shell, first clamping bolts, first castors, right round rods, right cylinders, right strip-shaped grooves, second clamping bolts, second castors, left round rods, left cylinders, left strip-shaped grooves, first insertion strips, second insertion strips, left insertion grooves and right insertion grooves. The shielding assembly includes a cloth frame, a transparent film, a magic tape matte side belt, a magic tape hook side belt, a rubber frame, rubber sheets, fastening bolts and threaded holes. Compared with the prior art, the isolation device has the following beneficial effects that the direct contact between articles such as bedding used by patients and the bed plate and the isolation coveris realized, the probability that the isolation cover and the bed plate are contaminated by bacteria is reduced, the removal and cleaning of the rubber frame, the magic tape hook side belt, the magictape matte side belt and other parts can further be achieved to avoid the hygienic dead angle.

The invention discloses a horizontal plate mop, and relates to the field of cleaning tools. The horizontal plate mop comprises a mop head and a mop rod, wherein the mop head and the mop rod are connected, the mop rod comprises a handle, a first connecting rod, a second connecting rod and a locking sleeve, the handle, the first connecting rod, the locking sleeve and the second connecting rod are sequentially connected through sleeving into a whole, one end of the second connecting rod is connected with the mop head, a self-locking device is arranged in the locking sleeve, one end of the self-locking device sleeves in the first connecting rod, and the other end of the self-locking device sleeves in the second connecting rod. The horizontal plate mop is simple and compact in structure, and good in connecting effect, length adjustment can be carried out according to use occasions, during use, the mop rod can not have section separation, in addition, the mop can adapt to the cleaning requirements of different positions, the dead corners of sanitation are avoided, moreover, the self-locking device is slightly screwed through the locking sleeve, then the tight locking of the self-lockingdevice is completed, the mop rod then can be rapidly assembled, and the assembly process is simple.

The invention provides a turnover closestool, and relates to the technical field of bathroom accessories, the turnover closestool comprises a closestool main body and a mounting box body, a mounting opening is formed in the side wall of the mounting box body, the closestool main body is rotatably arranged in the mounting opening, and a first driving assembly for driving the closestool main body to turn over is arranged on the side wall of the mounting box body; and a blow-off pipeline communicated with the closestool main body is arranged in the mounting box body. The closestool main body is mounted in the mounting box body, so that most of the area of the bathroom space occupied by the existing closestool main body can be saved, and the space can be reasonably utilized by the existing small bathroom, when the closestool main body is rotated to be parallel to the wall surface, the cleaning liquid in the closestool main body can be drained completely, the situation that sewage in the closestool column flows back to cause sanitary dead corners in a bathroom is avoided, the situation that an existing closestool body occupies most of the area of the space of the bathroom can be avoided, and reasonable utilization of the space of an existing small bathroom is increased.

The invention discloses a manual bone grinding machine convenient to use. The machine comprises a base, an upper cover, a bone grinding roller assembly and a bone receiving box, wherein the upper cover is arranged above the base, a feeding port is formed in the top of the upper cover, one side of the upper cover is connected with one side of the base in a pivoted mode, the other side of the uppercover is connected with the other side of the base through a bolt assembly, the bone grinding roller assembly is arranged in a containing cavity formed by the upper cover and the base, the bone receiving box is arranged in the bone grinding roller assembly in a drawable mode, the bone grinding roller assembly comprises an outer roller, a plurality of discharging holes are formed in the circumferential face of the outer roller, and bone grinding blades are arranged on one side of each discharging hole. According to the machine, the bone grinding hole diameter can be adjusted through the bone grinding roller assembly, so that bone grains with different particle sizes are prepared, the requirements of different operations or different bone grafting parts for different bone diameters are met,and the work which can be completed by multiple devices can be completed through one device.

The invention discloses a lubricating device of a wheel shifting shaft of a sterile filling machine. A shifting wheel is rotationally arranged inside a bearing sleeve through an upper end bearing and a lower end bearing; the bearing sleeve penetrates through and is fixed on a frame; the upper end and the lower end of the wheel shifting shaft are respectively matched with the bearing sleeve through an upper sealing ring and a lower sealing ring; a clearance between the wheel shifting shaft and the bearing sleeve is sealed to form a lubricating cavity by the upper sealing and the lower sealing ring; the upper end bearing and the lower end bearing are arranged inside the lubricating cavity; a lower lubricating opening communicated with a lower lubricating oil way, and an upper lubricating opening communicated with an upper lubricating oil way are formed in the lower end of the bearing sleeve; the lower lubricating opening is communicated with the lubricating cavity between the lower end bearing and the lower sealing ring; the upper lubricating opening is communicated with the lubricating cavity between the upper end bearing and the upper sealing ring through an axial slideway arranged on the sleeve wall of the bearing sleeve; a vent hole communicated with the lubricating cavity is formed in the bearing sleeve. The lubricating device is simple in structure, and free of a dusty corner, and a table board of the frame is concise and clean on the premise of ensuring full lubrication of the upper end bearing.

The invention relates to a de-dusting device which solves the problem of cleaning books and bookshelf. According to the technical scheme for solving the problem, the de-dusting device comprises four parts, namely, a supporting part, a clamping part, a lifting part and a cleaning part, wherein a supporting rod, an upper tank and a lower tank are arranged for supporting the books; a first rotating shaft and a second rotating shaft are arranged in the upper tank; a clamping mechanism and a lifting mechanism are supplemented to each other through a ratchet wheel and a friction wheel; finally, a baffle is arranged in the lower tank; a dust collecting rod is arranged on the baffle; the dust collecting rod is capable of sliding left and right; a compressed spring is arranged between the dust collecting rod and the lower tank; a rack is arranged on the rear side of the dust collecting rod; an incomplete gear is arranged on the second rotating shaft in the lower tank in a sleeving manner; the incomplete gear is meshed with the rack through a gear; a flywheel is arranged on the first rotating shaft; a linear wheel is arranged on the flywheel, is separated from the flywheel and rotates. The de-dusting device has the advantages of smart structure, convenience in operation, high practicability, capability of effectively solving the problem of sanitary dead angle on the contact parts of thebooks and the bookshelf, excellent cleaning effect and high working efficiency.

The invention provides a cleaning brush being able to clean a blind angle. The cleaning brush is characterized in that a brush head and a brush handle are designed into a V-shape, thus being convenient for people to bend the cleaning brush to clean a washing basin or a groove part of a stool to avoid a blind angle for sanitation.

The invention relates to an anti-drip brewing type soybean milk machine. It includes a frame with a brewing chamber, a brewing head, a liquid supply mechanism for supplying liquid to the brewing head, and a brewing cup for accommodating a bag. The brewing head moves toward or away from the brewing chamber, and the liquid supply The mechanism is arranged on the machine base, and the brewing cup is freely placed into or out of the brewing cavity of the machine base. The brewing cup is provided with a slurry outlet channel for the slurry to flow out, and a slurry outlet hose is provided on the slurry outlet channel. The brewing cup is also provided with a pipe clamp for opening and closing the slurry outlet channel. The base or the brewing cup is provided with a transmission mechanism that drives the pipe clamp to open and guide the slurry outlet hose. The internal volume of the brewing cup 30 to 100 ml, and the aspect ratio of the brewing cup is 0.3 to 2. Compared with the existing technology, when the brewing cup is taken out from the machine base after the pulping is finished, the pipe clamp closes the slurry outlet channel, thereby preventing the slurry remaining in the brewing cup or the material bag from dripping down and getting everywhere It is all soy milk residual liquid that causes troubles to users.

The present invention provides a suspended anti-theft chassis. A clamping component is provided above a chassis body of the chassis; the clamping component comprises a pair of U-shaped clamping heads; the two U-shaped clamping heads are located above front and rear sides of the chassis body with openings opposite to each other; two rearward extending sleeves are welded below the U-shaped clamping head on the front side; two forward extending metal rods are welded below the U-shaped clamping head on the rear side; front ends of the two metal rods are movably connected inside the two corresponding sleeves in the front in a sleeved manner; and the sleeves and the metal rods are each provided with two rows of corresponding through holes; a right side surface edge of the chassis body is fixedly connected to a vertical shaft; one side of the shaft is provided with a horizontal telescopic rod; one end of the telescopic rod is fixedly connected to a bushing; the bushing is rotatably connected to a middle portion of the shaft in a sleeving manner; and the other end of the telescopic rod is fixedly connected to a metal holding clip. The chassis provided by the present invention does not occupy floor space, precludes dusty corners at the bottom of the chassis, and is simple in apparatus mechanism, reliable in function, and excellent in anti-theft effect.

The invention relates to a brewing type soybean milk machine for preventing dropping liquid. The dissolving soybean milk machine for preventing dropping liquid comprises an engine base with a brewing cavity, a brewing head, a liquid supply mechanism for providing liquid for the brewing head, and a brewing cup for containing a material bag; the brewing head approaches or departs from the brewing cavity to move; the liquid supply mechanism is arranged on the engine base; the brewing cup freely enters or departs from the preparing cavity of the engine base; a size outlet channel through which the size flows outside is arranged on the brewing cup; a size outlet hose is arranged on the size outlet channel; a pipe clamp for opening and closing the size outlet channel is also arranged on the brewing cup; a transmission mechanism for driving the pipe clamp to open so as to conduct the size outlet hose is arranged on the engine base or the brewing cup; the internal volume of the brewing cup is 30-100ml, and the height-diameter ratio of the brewing cup is 0.3 to 2. Compared with the prior art, the size outlet channel is closed when the brewing cup is taken out from the engine base after the size is brewed. Thus, the size left inside the brewing cup or the material bag is prevented from falling off, and the soya-bean milk residue falls off all over the place, resulting in a puzzle to a user.