Abstract: The present invention relates to a method of producing anhydrosugar alcohol by dehydrating sugar alcohol at high pressure in the presence of a catalyst which is less acidic than a conventional sulfuric acid catalyst and which can suppress side reactions at high temperature. According to the present invention, anhydrosugar alcohol can be produced in a yield similar to that in a vacuum reaction.

Abstract: The present invention relates to a method for producing anhydrosugar alcohol, and more particularly to a method of producing anhydrosugar alcohol using a solvent including at least two components that form an azeotrope with water at atmospheric pressure and that have significantly different boiling points. The method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol by efficiently controlling the reaction temperature by use of a solvent including at least two components that form an azeotrope with water at atmospheric pressure and that have significantly different boiling points.

Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.

Abstract: A glass light-guiding plate which has high-temperature stability and is advantageous in being manufactured in a slim profile is provided. The glass light-guiding plate includes a glass plate including 75 to 85 wt % SiO2, 5 to 20 wt % B2O3, 1 to 5 wt % Al2O3, 3 to 8 wt % R2O (here, R is at least one of Li, Na, and K), and Fe2O3<0.0025 wt %.

Abstract: A glass light-guide plate having a small color difference and a manufacturing method thereof are provided. The light-guide plate includes glass containing 70 to 85 wt % of SiO2, 5 to 20 wt % of B2O3, 0 to 5 wt % of Al2O3, 1 to 7 wt % of R2O (here, R is at least one of Li, Na, and K), 0 to 0.005 wt % of Fe2O3, and less than 0.002 wt % of a transition metal oxide for adjusting a color difference.

Abstract: Provided is glass with high temperature stability, a low coefficient of thermal expansion and a high mechanical strength, a light guide plate including the glass to replace the conventional PMMA and metal frame, and fabricating methods thereof. The glass according to the present disclosure is borosilicate glass containing 75˜85 wt % of SiO2, 5˜15 wt % of B2O3, 0˜5 wt % of Al2O3, R2O 1˜7 wt % where R is at least one of Li, Na and K, and <0.005 wt % of Fe2O3 and having the redox ratio 0.5 or more. This glass maintains luminance and has an excellent color difference reduction effect when used in a light guide plate.

Abstract: A glass light-guiding plate which has high-temperature stability and is advantageous in being manufactured in a slim profile is provided. The glass light-guiding plate includes a glass plate including 75 to 85 wt % SiO2, 5 to 20 wt % B2O3, 1 to 5 wt % Al2O3, 3 to 8 wt % R2O (here, R is at least one of Li, Na, and K), and Fe2O3<0.0025 wt %.

Abstract: The present invention relates to a method of producing and purifying a high-purity anhydrosugar alcohol in high yield by a simple process and apparatus, the method includes the steps of: allowing a sugar alcohol to react in the presence of an acid catalyst in a reactor, and, at the same time, evaporating a product of the reaction; cooling the evaporated product to remove water and obtain a crude anhydrosugar alcohol; and introducing the crude anhydrosugar alcohol into a melt crystallization process to obtain a high-purity anhydrosugar alcohol.

Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.

Abstract: The present invention relates to a method for producing anhydrosugar alcohol, and more particularly to a method of producing anhydrosugar alcohol using a solvent including at least two components that form an azeotrope with water at atmospheric pressure and that have significantly different boiling points. The method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol by efficiently controlling the reaction temperature by use of a solvent including at least two components that form an azeotrope with water at atmospheric pressure and that have significantly different boiling points.

Abstract: The present invention relates to a method of producing anhydrosugar alcohol by dehydrating sugar alcohol at high pressure in the presence of a catalyst which is less acidic than a conventional sulfuric acid catalyst and which can suppress side reactions at high temperature. According to the present invention, anhydrosugar alcohol can be produced in a yield similar to that in a vacuum reaction.

Abstract: The present invention relates to a mobile terminal and a method of controlling the same. The mobile terminal of the present invention includes a first body equipped with a first display unit and a user input unit, a second body equipped with a second display unit and coupled to the first body in a sliding manner, and a controller that controls at least one of display of an image and display of a control menu with respect to at least one of the first and second display units according to a distance where the second body slides from a position where the second body has slid down to the first body. According to the present invention, at least one of display of an image and display of a control menu can be controlled in response to a distance where the second body slides.

Abstract: A mobile terminal is provided that includes a housing having an opening, a display provided in the opening of the housing, a bezel provided on the housing, and at least one sensor or a touch screen/sensor provided at the bezel. The at least one sensor or touch screen detects a user selection on the bezel such that an image on the display changes or a command is performed by the mobile terminal. The sensor or the touch screen/sensor also allows images on the main display to be not hidden because items or commands are selected on the bezel.

Abstract: A portable terminal includes a body comprising a first display configured to display first data, and first and second covers coupled to a front side of the body, wherein each of the first and second covers is structured to be physically displaceable relative to the body and each being positionable between open and closed positions, wherein the open position of each of the first and second covers permits a relative increase in viewable portion of the front side of the body, and the closed position of each of the first and second covers permits a relative decrease in viewable portion of the front side of the body. The terminal also includes a touch input unit operatively coupled to one of the first display, the first cover, or the second cover, wherein the touch input unit is configured to receive input via user contact.

Abstract: A portable terminal includes a main body, a display, a plurality of sensors and a plurality of light elements. The main body includes a wireless communication unit. The display is coupled to the main body and is configured to output visible information. The plurality of sensors is coupled to the body and located at a peripheral region surrounding the display. A corresponding at least one sensor of the sensors is configured to receive user input for controlling a function associated with the visible information. The plurality of light elements is configured to output visible light. Each of the light elements is associated with one of the sensors to output the visible light proximate to the associated sensor. The corresponding at least one sensor is determined by which of the plurality of sensors is configured to permit controlling of the function associated with the visible information.

Abstract: A mobile terminal capable of managing schedule and a method of controlling the mobile terminal are provided. In order to register a new scheduled event to the mobile terminal, a schedule place corresponding to the new scheduled event may be displayed on a schedule map. Thereafter, a route between the schedule place and other routes may be established in consideration of a current location of the mobile terminal and traffic information. The clarity, color and/or shape of objects displayed on the schedule map may be changed in consideration of the current location of the mobile terminal or the traffic information. Therefore, a user may easily obtain various schedule information, current location information and traffic condition information from the schedule map.

Abstract: A mobile terminal including: a main body having a wireless communication module; and a projector mounted at the main body and projecting beams to display an image on an image display region separated from the main body, wherein when an operation mode is being executed while the image is being displayed, the projector displays a notification message indicating the executed operation mode on the image display region. If the operation mode is executed while an image is being displayed by means of the projector, the corresponding information is displayed on the image display region, to thus effectively transfer the information about the execution of the operation mode to the user.

Abstract: A method for editing data in a mobile terminal configured to conveniently change a symbol and a mobile terminal using the method for editing data are disclosed, wherein the method includes displaying an inputted data on a touch screen, displaying on the touch screen a progress bar including a handler if a progress bar display signal is inputted, generating an undo signal or a redo signal based on a drag direction by touching the handler, and deleting the data in response to the undo signal, or reinstate the data in response to the redo signal.

Abstract: The present invention relates to a mobile terminal and a method of controlling the same. The mobile terminal of the present invention includes a first body equipped with a first display unit and a user input unit, a second body equipped with a second display unit and coupled to the first body in a sliding manner, and a controller that controls at least one of display of an image and display of a control menu with respect to at least one of the first and second display units according to a distance where the second body slides from a position where the second body has slid down to the first body. According to the present invention, at least one of display of an image and display of a control menu can be controlled in response to a distance where the second body slides.

Abstract: A portable terminal includes a main body, a display, a plurality of sensors and a plurality of light elements. The main body includes a wireless communication unit. The display is coupled to the main body and is configured to output visible information. The plurality of sensors is coupled to the body and located at a peripheral region surrounding the display. A corresponding at least one sensor of the sensors is configured to receive user input for controlling a function associated with the visible information. The plurality of light elements is configured to output visible light. Each of the light elements is associated with one of the sensors to output the visible light proximate to the associated sensor. The corresponding at least one sensor is determined by which of the plurality of sensors is configured to permit controlling of the function associated with the visible information.