Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound and at least one second host compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of the compounds wherein the first host compound is represented by formula 1 and the second host compound is represented by formula 2, it is possible to provide an organic electroluminescent device having improved driving voltage, luminous efficiency, power efficiency and/or lifetime property.

Abstract: Disclosed is a method of producing lithium sulfide (Li2S) without using hydrogen sulfide (H2S) gas. Particularly, the method of producing lithium sulfide (Li2S) includes preparing a starting material including a metal oxide by subjecting a mixed powder including an inorganic compound containing lithium and oxygen, a metal reducing agent, and sulfur (S) to synthesis reaction using mechanical force, preparing a mixed solution by mixing the starting material and a solvent, and obtaining a lithium sulfide (Li2S) powder by removing the metal oxide from the mixed solution and then performing drying.

Abstract: Provided is an atypical environment-based location recognition apparatus. The apparatus includes a sensing information acquisition unit configured to, from sensing data collected by sensor modules, detect object location information and semantic label information of a video image and detect an event in the video image; a walk navigation information provision unit configured to acquire user movement information; a metric map generation module configured to generate a video odometric map using sensing data collected through a sensing information acquisition unit and reflect the semantic label information; and a topology map generation module configured to generate a topology node using sensing data acquired through the sensing information acquisition unit and update the topology node through the collected user movement information.

Abstract: The present disclosure relates to an antibody binding specifically to CD55 or an antigen-binding fragment thereof; and a composition for preventing, treating and/or diagnosing cancer containing the same. The antibody of the present disclosure may be used as an effective therapeutic composition for various CD55-mediated diseases since it shows high binding ability and inhibitory effect for the CD55 protein which promotes tumor growth by inhibiting the complement immune mechanism. In addition, the antibody of the present disclosure may be usefully used as an effective therapeutic adjuvant that fundamentally removes drug resistance and remarkably improves therapeutic responsiveness in various diseases in which resistance to therapeutic agents with CDC (complement-dependent cytotoxicity) as a mechanism of action has been induced due to overexpression of CD55.

Abstract: Provided is a method of improving skin condition by applying to the skin of a subject a cosmetic composition comprising black yeast-derived exosomes as an active ingredient and thereby improving the skin condition, particularly skin elasticity improvement, skin wrinkle reduction, skin texture improvement, skin tone improvement, skin brightness improvement, skin regeneration, skin moisturization, and/or whitening.

Abstract: The present disclosure relates to a plurality of host materials and organic electroluminescent devices comprising the same. The present disclosure may provide a plurality of host materials having a composition favorable to thermal denaturation due to a low deposition temperature, while improving hole properties and electronic properties of HOMO and LUMO, by comprising separate compounds represented by formulas 1 and 2 into a light-emitting layer. By comprising the plurality of host materials of the present disclosure, it is possible to provide an organic electroluminescent device having a lower driving voltage, higher luminous efficiency and/or longer lifetime.

Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as a plurality of host materials or by comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having lower driving voltage, higher luminous efficiency, and/or longer lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.

Abstract: Provided are an oxygen barrier film, a food wrapper including the same, and a method of preparing the oxygen barrier film. The oxygen barrier film may include: a base layer; and an organic/inorganic hybrid layer located on the base layer and including a natural hydrogel and a silane coupling agent.

Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, an organic electroluminescent device having improved driving voltage, power efficiency and/or lifetime characteristics compared to conventional organic electroluminescent devices can be provided.

Abstract: The present invention discloses a payment system and method providing an opportunity to change a basic discount range of a coupon upon a customer request, thereby inducing active participation of the customer. The payment system using a discount coupon capable of changing a discount range, comprising: a web server generating first coupon information in which a discount range is changed according to a coupon change request signal received through a web page and transmitting the first coupon information through the web page; and a plurality of user terminals transmitting the coupon change request signal to the web server when a touch signal of a coupon change menu of the web page is inputted, and receiving and outputting the first coupon information. The present invention can induce interest to customers, stimulate them to have expectation for shopping, and increase the number of visiting on website and application, by providing several opportunities to change discount range of coupons upon customers' requests.

Abstract: A washing machine and a method for guiding use of the same are disclosed. The method for guiding use of a washing machine having an LCD includes the steps of displaying at least one or more washing strokes on the LCD if a user selects a washing following menu displayed in the LCD by applying a power source, selecting a desired washing stroke from the displayed washing strokes, and displaying a guide message for processing the selected washing stroke. The method provides the user with convenience for use and processes the exact washing stroke.

Abstract: The present invention relates to a method and device for displaying usage guidelines of a washing machine, and more particularly, to a method and device for displaying usage guidelines of a washing machine wherein a user can be guided in all the washing processes by the respective stages. The present invention is characterized in that usages of the washing machine by the respective stages are provided to an inexperienced person who does not know well the usages, that actual processes are performed when the user follows the provided instructions, and that the user can personally check and troubleshoot simple problems which may occur when utilizing the washing machine. According to the present invention, there is an additional advantage in that various functions and usages of the washing machine can be more conveniently and efficiently utilized with the aid of a wash help.

Abstract: The present invention relates to a method and device for displaying usage guidelines of a washing machine, and more particularly, to a method and device for displaying usage guidelines of a washing machine wherein a user can be guided in all the washing processes by the respective stages. The present invention is characterized in that usages of the washing machine by the respective stages are provided to an inexperienced person who does not know well the usages, that actual processes are performed when the user follows the provided instructions, and that the user can personally check and troubleshoot simple problems which may occur when utilizing the washing machine. According to the present invention, there is an additional advantage in that various functions and usages of the washing machine can be more conveniently and efficiently utilized with the aid of a wash help.

Abstract: A method for displaying a partial stroke mode of a washing machine is disclosed, which permits a user to recognize that a stroke mode other than a currently selected stroke mode is not performed if the user selects a partial stroke mode. The method for displaying a partial stroke mode of a washing machine having a display device includes the steps of displaying a whole washing stroke mode, which sequentially processes a series of stroke modes related with washing, and a partial washing stroke mode which processes some of the stroke modes if a power supply is applied, displaying courses corresponding to the partial washing stroke mode in the display device if the user selects the partial washing stroke mode, and displaying a guide message for a selected course in the display device if the user selects a desired course in the displayed courses. The method acts to prevent the user's undesired washing stroke mode from being performed and provides the user with convenience for use.

Abstract: The present invention relates to a method and device for displaying usage guidelines of a washing machine, and more particularly, to a method and device for displaying usage guidelines of a washing machine wherein a user can be guided in all the washing processes by the respective stages. The present invention is characterized in that usages of the washing machine by the respective stages are provided to an inexperienced person who does not know well the usages, that actual processes are performed when the user follows the provided instructions, and that the user can personally check and troubleshoot simple problems which may occur when utilizing the washing machine. According to the present invention, there is an additional advantage in that various functions and usages of the washing machine can be more conveniently and efficiently utilized with the aid of a wash help.

Abstract: The present invention relates to a method and device for displaying usage guidelines of a washing machine, and more particularly, to a method and device for displaying usage guidelines of a washing machine wherein a user can be guided in all the washing processes by the respective stages. The present invention is characterized in that usages of the washing machine by the respective stages are provided to an inexperienced person who does not know well the usages, that actual processes are performed when the user follows the provided instructions, and that the user can personally check and troubleshoot simple problems which may occur when utilizing the washing machine. According to the present invention, there is an additional advantage in that various functions and usages of the washing machine can be more conveniently and efficiently utilized with the aid of a wash help.

Abstract: The present invention relates to a method and device for displaying usage guidelines of a washing machine, and more particularly, to a method and device for displaying usage guidelines of a washing machine wherein a user can be guided in all the washing processes by the respective stages. The present invention is characterized in that usages of the washing machine by the respective stages are provided to an inexperienced person who does not know well the usages, that actual processes are performed when the user follows the provided instructions, and that the user can personally check and troubleshoot simple problems which may occur when utilizing the washing machine. According to the present invention, there is an additional advantage in that various functions and usages of the washing machine can be more conveniently and efficiently utilized with the aid of a wash help.

Abstract: A method for displaying a partial stroke mode of a washing machine is disclosed, which permits a user to recognize that a stroke mode other than a currently selected stroke mode is not performed if the user selects a partial stroke mode. The method for displaying a partial stroke mode of a washing machine having a display device includes the steps of displaying a whole washing stroke mode, which sequentially processes a series of stroke modes related with washing, and a partial washing stroke mode which processes some of the stroke modes if a power supply is applied, displaying courses corresponding to the partial washing stroke mode in the display device if the user selects the partial washing stroke mode, and displaying a guide message for a selected course in the display device if the user selects a desired course in the displayed courses. The method acts to prevent the user's undesired washing stroke mode from being performed and provides the user with convenience for use.