摘要:
A nucleotide sequence of the threonine operon of E. coli with a deletion of all or part of a nucleotide fragment of −56 to −18, a recombinant vector containing the above nucleotide sequence, and a transformed host cell containing the recombinant vector are provided. A method for producing L-threonine comprising culturing the transformed host cell is also provided.
摘要:
Disclosed herein is a direct ion beam deposition method through ion beam sputtering. The method comprises the steps of: a) providing a workpiece on which a certain material is to be deposited with a certain desired thickness; b) providing a deposit material having a certain area from which the deposit material is discharged into a certain working gas atmosphere; c) transforming the working gas atmosphere into a plasma atmosphere by bombarding electrons widely to the working gas atmosphere; d) emitting a surface material by means of a sputter from the deposit material exposed in the plasma atmosphere; e) exposing the emitted deposit material to an ionization environment; f) and providing energy to the deposit material by applying an electric potential to the step e) to thereby be radiated on a corresponding face of the workpiece. A direct ion beam deposition system is also disclosed.
摘要:
The present invention relates to a plasma generating apparatus and a method of forming an alignment film of a liquid crystal display using the plasma generating apparatus. A high voltage is applied to the main electrode to generate a high non-regular electric field having directivity. Thus, the main electrode generates plasma of a high density having directivity. In this time, plasma is oriented toward a substrate at a proper angle and generates plasma having directivity. Large-area low temperature plasma can be generated through a simple structure, and a flat panel and roll to roll 3-D sample processing condition can be satisfied. Thus, surface reforming and cleaning of any material such as metal, semiconductor, plastic and ceramics regardless of the type of a sample can be easily made. It is thus possible to effectively form an alignment film of a liquid crystal display using this plasma generating apparatus.
摘要:
Disclosed is a technology by which rules on communication permission or control are enforced to network internal devices such that an environment which looks as if to have a virtual firewall existing between network internal devices can be established. A communication control apparatus for this is located on the same level in the network as other devices are located. By using this communication control apparatus, an address resolution protocol (ARP) packet in which a data link layer address is manipulated is provided to devices that are the objects of communication cut-off, such that data packets transmitted by the communication cut-off object devices are transmitted to manipulated abnormal addresses. By doing so, communication with the communication cut-off object devices is cut off. For a device which is in a communication cut-off state although the device is not an object of communication cut-off any more, the communication control apparatus transmits an ARP packet including normal address information to the device such that the communication cut-off state is canceled.
摘要:
The present invention provides a mobile camera optical lens system which assures a wide view angle by dividing a view angle into two or more view angles, and simultaneously achieves the thinness of the mobile camera optical lens system by providing separate off-axis lens systems respectively corresponding to the split view angles.