Abstract: A lip muscle strengthening device includes: an upper plate inserted into a mouth of a user including a first electrode formed on a bottom surface; a lower plate inserted into the mouth of the user including a second electrode formed on a top surface; an outer support plate adhered to an outer lip of the user and supporting a front end of the upper plate and a front end of the lower plate in a connected state while separating the upper plate and the lower plate from each other; and a pressure recognition unit connected to the first electrode and the second electrode and enabling the user to recognize a closed state of the mouth when the user pushes the upper plate and the lower plate with the upper lip and the lower lip and the first electrode and the second electrode contact each other.

Abstract: A formaldehyde detecting apparatus includes a formaldehyde sensor configured to measure concentration of formaldehyde in air; a printed circuit board on which the formaldehyde sensor is disposed, the printed circuit board including a signal processor configured to process a signal output from the formaldehyde sensor; a fixing member disposed on the printed circuit board, the fixing member configured to fix the formaldehyde sensor, wherein the fixing member prevents the formaldehyde sensor from oscillating with respect to the printed circuit board by external vibration; and a power supply configured to supply a voltage capable of stabilizing an output signal to the signal processor.

Abstract: The present invention relates to a smart infant toilet system and a method thereof, and the system includes a first sensor mounted to an infant product to sense external temperature and humidity, a second sensor mounted to the infant product to sense gas, third sensor mounted to the infant product to sense whether an infant rides on the infant product, a control module configured to set critical temperature and humidity, and an alarming unit configured to provide an alarm to a guardian when it is determined that the comparative temperature and humidity are out of the preset range of the critical temperature and humidity.

Abstract: The present invention relates to a smart infant toilet system and a method thereof, and the system includes a first sensor mounted to an infant product to sense external temperature and humidity, a second sensor mounted to the infant product to sense gas, third sensor mounted to the infant product to sense whether an infant rides on the infant product, a control module configured to set critical temperature and humidity, and an alarming unit configured to provide an alarm to a guardian when it is determined that the comparative temperature and humidity are out of the preset range of the critical temperature and humidity.

Abstract: A baby carrier is provided. The baby carrier includes a body part, a pair of shoulder bands coupled to opposite sides of an upper portion of the body part, a waist band coupled to a lower portion of the body part, a load control unit which is coupled to the waist band and is changed to any one posture of a first posture and a second posture to switch a load-applied direction. A ratio of loads applied to the shoulder bands and the waist band is changed in response to the load control unit being changed from the one posture of the first posture and the second posture to the other posture of the first posture and the second posture.

Abstract: A lip muscle strengthening device includes: an upper plate inserted into a mouth of a user including a first electrode formed on a bottom surface; a lower plate inserted into the mouth of the user including a second electrode formed on a top surface; an outer support plate adhered to an outer lip of the user and supporting a front end of the upper plate and a front end of the lower plate in a connected state while separating the upper plate and the lower plate from each other; and a pressure recognition unit connected to the first electrode and the second electrode and enabling the user to recognize a closed state of the mouth when the user pushes the upper plate and the lower plate with the upper lip and the lower lip and the first electrode and the second electrode contact each other.

Abstract: Orthodontic braces include: a correction frame provided to cover a corresponding group of teeth by having, on an inner surface, a correction recess corresponding to a correct tooth form of teeth, and formed of a soft or hard material; and a support frame tightly coupled to surround an outer surface of the correction frame, and formed of soft or hard material, wherein a coupling groove portion is formed at an edge end portion of an outer surface of the correction frame, and a coupling bent portion correspondingly engaged and coupled to the coupling groove portion is formed at an edge end portion of an inner surface of the support frame.

Abstract: A refrigerator having a carbonated water production device, according to one concept of the present invention, comprises: a pressure regulator for adjusting and emitting the pressure of carbon dioxide emitted from a carbon dioxide cylinder; a solenoid switch valve for controlling the supply of the carbon dioxide discharged from the pressure regulator to a carbonated water tank; a connection channel for connecting the pressure regulator and the solenoid switch valve; and a relief valve arranged in the connection channel so as to discharge the carbon dioxide of the connection channel to the atmosphere if the pressure of the carbon dioxide of the connection channel is greater than a predetermined pressure limit. Thus, the pressure of the carbon dioxide of the connection channel is capable of being maintained at a predetermined pressure limit or less, and solenoid malfunction can be prevented so as to improve reliability and stability of a system.

Abstract: An air purifier includes a main body having an inlet configured to receive air and a discharger configured to discharge the air. The air purifier also includes a filter disposed within the main body and configure to purify contaminates from the air. The air purifier also includes a contamination sensor disposed adjacent to the filter and integrally includes a light emitter configured to emit a light toward the filter and a light receiver configured to receive the light emitted from the light emitter.

Abstract: A baby carrier is provided. The baby carrier includes a body part, a pair of shoulder bands coupled to opposite sides of an upper portion of the body part, a waist band coupled to a lower portion of the body part, a load control unit which is coupled to the waist band and is changed to any one posture of a first posture and a second posture to switch a load-applied direction. A ratio of loads applied to the shoulder bands and the waist band is changed in response to the load control unit being changed from the one posture of the first posture and the second posture to the other posture of the first posture and the second posture.

Abstract: A formaldehyde detecting apparatus includes a formaldehyde sensor configured to measure concentration of formaldehyde in air; a printed circuit board on which the formaldehyde sensor is disposed, the printed circuit board including a signal processor configured to process a signal output from the formaldehyde sensor; a fixing member disposed on the printed circuit board, the fixing member configured to fix the formaldehyde sensor, wherein the fixing member prevents the formaldehyde sensor from oscillating with respect to the printed circuit board by external vibration; and a power supply configured to supply a voltage capable of stabilizing an output signal to the signal processor.

Abstract: A refrigerator having a carbonated water production device, according to one concept of the present invention, comprises: a pressure regulator for adjusting and emitting the pressure of carbon dioxide emitted from a carbon dioxide cylinder; a solenoid switch valve for controlling the supply of the carbon dioxide discharged from the pressure regulator to a carbonated water tank; a connection channel for connecting the pressure regulator and the solenoid switch valve; and a relief valve arranged in the connection channel so as to discharge the carbon dioxide of the connection channel to the atmosphere if the pressure of the carbon dioxide of the connection channel is greater than a predetermined pressure limit. Thus, the pressure of the carbon dioxide of the connection channel is capable of being maintained at a predetermined pressure limit or less, and solenoid malfunction can be prevented so as to improve reliability and stability of a system.

Abstract: An air purifier includes a main body comprising an inlet configured to receive air and a discharger configured to discharge the air. The air purifier also includes a filter disposed within the main body and configure to purify contaminates from the air. The air purifier also includes a contamination sensor disposed adjacent to the filter and integrally includes a light emitter configured to emit a light toward the filter and a light receiver configured to receive the light emitted from the light emitter.

Abstract: A washing machine in which the structure of a laundry weight sensing apparatus to sense the weight of laundry within a tub is enhanced. The washing machine includes a cabinet, a tub, a support member provided with one end combined with the tub and the other end combined with the cabinet so as to support the tub to the cabinet, and a laundry weight sensing apparatus provided with one side combined with the support member to use load of the tub transmitted to the support member so as to sense the weight of laundry within the tub and the other side contacting one surface of the cabinet to prevent impact transmitted from the tub. The washing machine may precisely measure the weight of laundry without influence of surrounding environments and prevent an error generated due to transmission of vibration caused by operation of the tub.

Abstract: Disclosed are a catalyst for synthesizing glycerol carbonate from glycerol and a method for producing the catalyst. The method includes adding an aqueous NaOH solution, an aqueous KOH solution, or a mixture of an aqueous NH4(OH) solution and an aqueous NaOH solution to an aqueous solution of a mixture of zinc nitrate and aluminum nitrate, aging the mixture, filtering and washing the aged mixture to obtain a solid, and calcining the solid under an oxygen, nitrogen or helium atmosphere. The use of the catalyst enables the synthesis of glycerol carbonate from glycerol and urea with high conversion rate, selectivity and yield. Further disclosed is a method for synthesizing glycerol carbonate from glycerol using the catalyst.

Abstract: Disclosed are a catalyst for synthesizing glycerol carbonate from glycerol and a method for producing the catalyst. The method includes adding an aqueous NaOH solution, an aqueous KOH solution, or a mixture of an aqueous NH4(OH) solution and an aqueous NaOH solution to an aqueous solution of a mixture of zinc nitrate and aluminum nitrate, aging the mixture, filtering and washing the aged mixture to obtain a solid, and calcining the solid under an oxygen, nitrogen or helium atmosphere. The use of the catalyst enables the synthesis of glycerol carbonate from glycerol and urea with high conversion rate, selectivity and yield. Further disclosed is a method for synthesizing glycerol carbonate from glycerol using the catalyst.

Abstract: The present invention relates to a method of manufacturing conductive fibers, more precisely a method of manufacturing conductive fibers comprising the steps of coating silver complex compound coating solution on non-conductive fibers to coat the fibers with silver complex compound; heating the fibers to form a silver coating layer; and forming an antioxidant layer thereon, and conductive fibers prepared by the same. The method of manufacturing conductive fibers of the present invention not only is simple and easy but also requires low production costs. So, the conductive fibers prepared by the method of the present invention are not only excellent in conductivity but also excellent in other mechanical properties such as adhesive strength of the conductive layer, fiber strength and softness, etc.

Abstract: The present invention relates to a method of manufacturing conductive fibers, more precisely a method of manufacturing conductive fibers comprising the steps of coating silver complex compound coating solution on non-conductive fibers to coat the fibers with silver complex compound; heating the fibers to form a silver coating layer; and forming an antioxidant layer thereon, and conductive fibers prepared by the same. The method of manufacturing conductive fibers of the present invention not only is simple and easy but also requires low production costs. So, the conductive fibers prepared by the method of the present invention are not only excellent in conductivity but also excellent in other mechanical properties such as adhesive strength of the conductive layer, fiber strength and softness, etc.