Abstract: The present invention relates to a compound represented by Chemical Formula 1, a catalyst system for olefin oligomerization comprising the same, and a method of olefin oligomerization using the same.

Abstract: The present invention relates to a method for forming a silicon oxide nanopattern, in which the method can be used to easily form a nanodot or nanohole-type nanopattern, and a metal nanopattern formed by using the same can be properly applied to a next-generation magnetic recording medium for storage information, etc., a method for forming a metal nanopattern, and a magnetic recording medium for information storage using the same. The method for forming a silicon oxide nanopattern includes the steps of forming a block copolymer thin film including specific hard segments and soft segments containing a (meth)acrylate-based repeating unit on silicon oxide of a substrate; conducting orientation of the thin film; selectively removing the soft segments from the block copolymer thin film; and conducting reactive ion etching of silicon oxide using the block copolymer thin film from which the soft segments are removed, as a mask to form a silicon oxide nanodot or nanohole pattern.

Abstract: This disclosure relates to a novel ligand compound that can oligomerize ethylene with high catalyst activity and selectivity, a catalyst system for olefin oligomerization including the same, and a method for olefin oligomerization using the same.

Abstract: This disclosure relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity, and yet, exhibits high selectivity to 1-hexene and 1-octene, thus enabling efficient preparation of alpha-olefin.

Abstract: The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The present ligand compound is a compound having a certain new structure and enables provision of a catalyst system for olefin oligomerization that can oligomerize ethylene with higher catalytic activity.

Abstract: This disclosure relates to a novel ligand compound that can oligomerize ethylene with high catalyst activity and selectivity, a catalyst system for olefin oligomerization including the same, and a method for olefin oligomerization using the same.

Abstract: This disclosure relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity, and yet, exhibits high selectivity to 1-hexene or 1-octene, thus enabling more efficient preparation of alpha-olefin.

Abstract: The present invention relates to a process for preparing an olefin oligomer including a step of contacting an olefin monomer with a composite catalyst in the presence of a halogenated organic solvent, wherein the composite catalyst includes: a transition metal compound; a cocatalyst; and an organic ligand including a diphosphonoamine compound in which two or more diphosphonoamines are combined via a polyvalent functional group.

Abstract: A light guide plate and a method for manufacturing the same are disclosed. The light guide plate is injection-molded from an aromatic polycarbonate resin having a weight average molecular weight of about 10,000 g/mol to about 15,000 g/mol and an alkali metal content of about 40 ppb to about 100 ppb. The light guide plate has a color coordinate y variation (?y) of about 0.0001 to about 0.0150 after being left at about 80° C. and about 90% RH for about 1,000 hours, and emits light having an about 85% to about 100% brightness of a light source. The light guide plate can exhibit excellent discoloration resistance under high temperature and high humidity conditions and can have small reduction in brightness.

Abstract: This disclosure relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for olefin oligomerization using the same. The catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity, and yet, exhibits high selectivity to 1-hexene and 1-octene, thus enabling efficient preparation of alpha-olefin.

Abstract: The present invention relates to a compound represented by Chemical Formula 1, a catalyst system for olefin oligomerization comprising the same, and a method of olefin oligomerization using the same.

Abstract: This disclosure relates to a novel ligand compound that can oligomerize ethylene with high catalyst activity and selectivity, a catalyst system for olefin oligomerization including the same, and a method for olefin oligomerization using the same.

Abstract: The present invention relates to a method for forming a metal nanowire or a metal nanomesh. More particularly, the present invention relates to a method for forming a metal nanowire or a metal nanomesh capable of forming a variety of metal nanowires or metal nanomeshes in a desired shape by a simplified method.

Abstract: The present invention relates to a method for forming a silicon oxide nanopattern, in which the method can be used to easily form a nanodot or nanohole-type nanopattern, and a metal nanopattern formed by using the same can be properly applied to a next-generation magnetic recording medium for storage information, etc., a method for forming a metal nanopattern, and a magnetic recording medium for information storage using the same. The method for forming a silicon oxide nanopattern includes the steps of forming a block copolymer thin film including specific hard segments and soft segments containing a (meth)acrylate-based repeating unit on silicon oxide of a substrate; conducting orientation of the thin film; selectively removing the soft segments from the block copolymer thin film; and conducting reactive ion etching of silicon oxide using the block copolymer thin film from which the soft segments are removed, as a mask to form a silicon oxide nanodot or nanohole pattern.

Abstract: A method for biometric authentication and a system using the same are provided. The biometric authentication system of the present invention separates pre-registered biometric information of a user into a plurality of separated biometric information, disperses them to a plurality of databases and manages them. Accordingly, when a user authentication process is needed, the biometric authentication system performs an authentication by obtaining the separated biometric information that are managed by a plurality of databases and composing registered biometric information. The present invention reduces the risk of leakage of biometric information of a user due to hacking or theft since it allows biometric information to be separated, disperse and managed, which conventionally is store as a single file on a server, a database or a security token.

Abstract: According to an embodiment of the present invention, it is possible to rapidly and accurately predict a class label of a predetermined test sample by extracting a disease-specific gene pair from gene pairs on a microarray data set representing an expression level for each of genes of a genome and for each of a plurality of samples by considering the correlation in a normal class and the correlation in a disease class, selecting a highest specific gene pair with the highest correlation among the extracted disease-specific genes, and predicting the class label of the predetermined test sample by using the selected highest specific gene pair.