Abstract: The present invention relates to a method for increasing L-methionine productivity and organic acid productivity. More particularly, the present invention relates to a method which involves adding a mixture containing methyl mercaptan and dimethyl sulfide at a appropriate ratio to O-acetyl homoserine or O-succinyl homoserine and to an enzyme having an activity of converting methionine precursor into L-methionine, so as to perform an enzyme reaction, to thereby improve the conversion rate of L-methionine and organic acid from the L-methionine precursor, and thus increasing L-methionine yield as compared to conventional method.

Abstract: A method for the preparation of nicotinic acid, which includes the step of obtaining a culture solution containing quinolinic acid by incubating a microorganism having an ability to produce quinolinic acid, and the step of adding an acid to the culture solution and conducting a decarboxylation reaction.

Abstract: Disclosed herein are a microorganism strain capable of producing the L-methionine precursor O-acetyl homoserine in high yield and a method of producing O-acetyl homoserine using the same. The microorganism strain is a strain of Escherichia sp. in which an acetyl-CoA synthase gene (acs) and/or a pantothenate kinase gene (coaA) encoding a pantothenate kinase gene refractory to feedback inhibition by CoA is introduced and expressed.

Abstract: A display apparatus is provided. The display apparatus includes a transparent display panel, a reflector disposed in the display apparatus and configured to reflect light and provide the reflected light to the transparent display panel, a light emitter configured to emit the light and project the emitted light to the reflector, and a control circuit configured to control the transparent display panel and the light emitter.

Abstract: An automatic detection method of an arrangement of a video wall including a plurality of monitors and a video wall system are provided. The method includes: calling, by a control computer, identification information of a first monitor of the plurality of monitors; sending, by the first monitor, a response signal to the control computer and sending, by a second monitor which does not correspond to the called identification information, a detecting signal including a received direction of the response signal to the control computer; and receiving, by the control computer, the detecting signal, and determining the arrangement of the plurality of monitors according to the received detecting signal.

Abstract: The present invention relates to a transformed microorganism producing an L-amino acid using sucrose as a main carbon source, and a method for producing an L-amino acid using the same.

Abstract: The present invention relates to a novel protein having O-acetylhomoserine sulfhydrylase activity, a mutant protein thereof, a polynucleotide encoding the same, a recombinant vector comprising the polynucleotide, a microorganism transformed with the recombinant vector, and a method for producing methionine or acetic acid using the protein. The production method of the present invention has the advantage of producing L-methionine and acetic acid cost-effectively through having higher conversion rate and reduced reaction time compared to the existing methods, and it can minimize the amount of enzyme homogenate added when using the mutant protein, thereby easily producing L-methionine and acetic acid at high yield.

Abstract: The present invention relates to a polypeptide that is modified to have homoserine O-acetyltransferase activity, and in particular, the present invention provides a modified polypeptide having homoserine O-acetyltransferase activity, in which the amino acid at position 111 of a polypeptide having homoserine succinyltransferase activity is substituted with other amino acid.

Abstract: Disclosed is a strain of Escherichia sp., capable of producing O-acetyl homoserine in high yield, with the introduction and enhancement therein of the activity of: homoserine acetyl transferase, aspartokinase and homoserine dehydrogenase; and at least one enzyme selected from a group consisting of phosphoenolpyruvate carboxylase, aspartate aminotransferase and aspartate semi-aldehyde dehydrogenase. Also, a method of producing O-acetyl homoserine using the strain is provided.

Abstract: The present invention relates to a method for enhancing the solubility of methionine. More particularly, the present invention relates to a method for increasing the solubility of methionine, in which mineral and sulfuric acid are added at an appropriate ratio to enhance the methionine solubility, thereby overcoming the problem of low solubility of methionine in water.

Abstract: The present invention relates to a method for increasing L-methionine productivity and organic acid productivity. More particularly, the present invention relates to a method which involves adding a mixture containing methyl mercaptan and dimethyl sulfide at a appropriate ratio to O-acetyl homoserine or O-succinyl homoserine and to an enzyme having an activity of converting methionine precursor into L-methionine, so as to perform an enzyme reaction, to thereby improve the conversion rate of L-methionine and organic acid from the L-methionine precursor, and thus increasing L-methionine yield as compared to conventional method.

Abstract: The present invention relates to a novel epoxy resin having improved heat-resistance, thermal expansion properties and processability, and to a thermosetting resin composition comprising the same. To this end, the present invention provides an epoxy resin of Chemical Formula 1 as disclosed in the Description, an epoxy resin composition comprising the same, and a packaging, substrate and transistor formed thereof. When a composition that contains an epoxy resin with a specific side functional group according to the present invention and/or an epoxy resin with a specific core structure is cured, a filler forms a strong chemical bond with the epoxy resin, thereby maximizing filling effects of the filler for the epoxy resin. Moreover, with the specific core structure, heat resistance and heat expansion properties of a cured product are substantially improved (CTE is reduced), and enhanced glass transition properties, strength and processability are demonstrated.

Abstract: The present invention relates to a transformed microorganism producing an L-amino acid using sucrose as a main carbon source, and a method for producing an L-amino acid using the same.

Abstract: Disclosed herein are a microorganism strain capable of producing the L-methionine precursor O-acetyl homoserine in high yield and a method of producing O-acetyl homoserine using the same. The microorganism strain is a strain of Escherichia sp. in which an acetyl-CoA synthase gene (acs) and/or a pantothenate kinase gene (coA) encoding a pantothenate kinase gene refractory to feedback inhibition by CoA is introduced and expressed.

Abstract: Disclosed is a strain of Escherichia sp., capable of producing O-acetyl homoserine in high yield, with the introduction and enhancement therein of the activity of: homoserine acetyl transferase, aspartokinase and homoserine dehydrogenase; and at least one enzyme selected from a group consisting of phosphoenolpyruvate carboxylase, aspartate aminotransferase and aspartate semi-aldehyde dehydrogenase. Also, a method of producing O-acetyl homoserine using the strain is provided.

Abstract: An image-photographing apparatus and method comprises a camera unit for capturing an image, a body in which the camera unit is disposed, a display panel for displaying the image, and a hinge unit connected to the display panel, for allowing the display unit to selectively turn to one of both side directions which are symmetrical with reference to the body. Accordingly, an operator can hold the apparatus with their right or left hand conveniently.

Abstract: An image-photographing apparatus and method comprises a camera unit for an image, a body in which the camera unit is disposed, a display panel for g the image, and a hinge unit connected to the display panel, for allowing the nit to selectively turn to one of both side directions which are symmetrical with e to the body. Accordingly, an operator can hold the apparatus with their right and conveniently.