Abstract:
PURPOSE: A method for preparing 3-hydroxypropionic acid using a recombinant microorganism is provided to enhance the productivity by resolve oxidation-reduction unbalance. CONSTITUTION: A recombinant microorganism for preparing 3-hydroxypropionic acid(3-HP) has an activity of reducing malonic semialdehyde to 3-HP and an activity of reducing malonyl-CoA to malonic semialdehyde. The malonyl-CoA reductase(mcr) activation and malonate semialdehyde reductase(msr) activation are derived from M. sedula. A recombinant microorganism for preparing 3-HP additionally has NADPH generation.
Abstract:
An image forming apparatus and a control method thereof are provided to control the optical power of an exposure unit to be lower than normal exposure power in forming an image normally when a developer belt is formed to prevent the reversion of a cleaning blade, thereby minimizing that an exposure portion for forming the developer belt has influence on the formation of a next color image, and improving the quality of the image. A photosensitive medium(110) is charged by a charging member(140) at a predetermined potential. An exposure unit(130) exposes the photosensitive medium to change a charging level on the photosensitive medium. A developing unit(111~114) develops an image by color on the photosensitive medium. A transfer medium(120) receives the image formed on the photosensitive medium. A cleaning blade(150) cleans the transfer medium. A control unit(200) adjusts the optical power of the exposure unit and drives the exposure unit when a developer belt for lubrication is formed to lubricate between the cleaning blade and the transfer medium.
Abstract:
PURPOSE: A menu drive-in method of a mobile communication terminal is provided to directly approach an index of a prior selected menu when approaching each menu, without initializing an index, so as to eliminate inconvenience of searching a menu from beginning whenever menu depth changes. CONSTITUTION: A controller accesses contents of a menu index table in a menu table(S42). The controller checks whether a menu index is stored(S44). If not, the controller stores currently selected menu and index(S46). The controller displays menu contents and the index through a displayer(S50). If a menu index is stored in the step S44, the controller sets the menu index as a current index(S48) and displays menu contents and the index through the displayer(S50). The controller checks whether a menu search key is inputted(S52). If so, the controller changes the index(S54), and if not inputted, the controller checks whether the displayed menu contents are selected(S56). If not, the controller jumps to the step S50, and if selected, the controller checks whether a sub menu is arranged(S58). If so, the controller returns to the step S42 to store the sub menu and a corresponding index. And if a sub menu is not arranged, the controller provides a function of the selected menu.
Abstract:
PURPOSE: A method for supplying telephone services is provided to assign different electronic serial numbers(ESNs) to many mobile wireless terminals having same subscriber numbers in a mobile telephone switching network, so as to select a required mobile wireless terminal. CONSTITUTION: A mobile switching center(MSC) checks whether priority changing messages are received through a base transceiver station(BTS) and a base station controller(BSC) from mobile wireless terminals. If so, the MSC informs a home location register(HLR) that priority changes exist(S401). The MSC checks whether an electronic serial number(ESN) of a first call-serviced terminal is received(S402). If so, the MSC receives a priority changing usage time from the first terminal, and transmits the priority changing usage time to the HLR to store the usage time(S403). The MSC requests a priority change to the HLR to cancel a call service of the first terminal, and supplies a call service to a second terminal(S404). The MSC checks whether a priority change canceling time elapses from the HLR(S405). If so, the MSC requests the priority change to the HLR to cancel the call service of the first terminal, and performs the call service in the second terminal.
Abstract:
A vacuum molding apparatus and a vacuum molding method are disclosed. The vacuum molding apparatus according to an embodiment of the present invention comprises: a first sheet measuring unit which measures the initial temperature of a sheet before the sheet is heated; a heat temperature measuring unit which measures the temperature of the burning space of the sheet; a second sheet measuring unit which measures the temperature of the heated sheet; and a control unit which controls the sheet so that the sheet is heated according to the initial temperature of the sheet and the temperature of the burning space of the sheet and controls the sheet so that the sheet is re-heated according to the variation of the target temperature and the temperature of the heated sheet. [Reference numerals] (110) First sheet measuring unit;(120) Second sheet measuring unit;(130) Heat temperature measuring unit;(140) Control unit;(B) First heating station;(C) Second heating station
Abstract:
PURPOSE: A high throughput screening system and a method of lactic acid-producing strains using two or more pH indicators are provided to quickly and accurately screen strains. CONSTITUTION: A high throughput screening system of lactic acid-producing strains contains the strain, a medium, and two or more pH indicators. The strains are a wild type strain, a mutant strain, and a recombinant strain. The pH indicators contain bromocresol green and methyl red in a ratio of 2:1-10:1. A method for screening the lactic acid-producing strains comprises: a step of adding the pH indicators to a medium; a step of culturing the strains; and a step of observing color change of the pH indicators, and measuring lactic acid production quantity.
Abstract:
PURPOSE: A method for preparing 3-HP(3-hydroxypropionic acid) and 1,3-PDO(1,3-propandiol) using microorganisms is provided to convert a glycerol substrate into 3-HP and 1,3-PDO. CONSTITUTION: A recombinant microorganism for preparing 3-HP and 1,3-PDO contains genes producing the compounds. The genes are dhaB(glycerol dehydratease), alhH(aldehyde dehydrogenase), and dhaT(1,3-propandiol oxidoreductase). dhaB gene is derived from K. pneumoniae or C. butyricum. alhH gene is derived from E.coli. The recombinant microorganism is E.coli. A method for producing 3-HP and 1,3-PDO comprises a step of culturing the recombinant microorganism in a medium containing a carbon substrate. The carbon substrate is glucose, sucrose, cellulose, or glycerol.
Abstract:
PURPOSE: A device and a method for navigating a pedestrian using terminal heading information are provided to accurately measure the position of a pedestrian only when heading information is valid. CONSTITUTION: A device(100) for navigating a pedestrian using terminal heading information comprises a sensor(111), a heading information calculation unit(114), an accuracy determination unit(113), and a position estimation filter(130). The sensor senses acceleration values and the movement information of a terminal. The calculation unit calculates heading information using the movement information of the terminal. The accuracy determination unit determines whether the heading information is valid or not using the sensed acceleration values. The position estimation filter estimates the position of a pedestrian depending on the determined result.
Abstract:
PURPOSE: A method for producing bio alcohol using a polynucleotide which enhances alcohol resistance of host cells is provided to enhance productivity in alcohol fermentation. CONSTITUTION: An isolated polynucleotide comprises: a polynucleotide comprising nucleotide having 90% or more identity with a nucleotide selected from sequence numbers 1-8; a polynucleotide encoding a polypeptide comprising amino acids having 90% or more identity with amino acids selected from sequence numbers 14-20; a polynucleotide comprising nucleotide sequence hybridizing with the selected nucleotide sequence under severe condition; and a polypeptide encoding polypeptide.