Abstract: The present disclosure relates to a plurality of host materials, organic electroluminescent compounds, and organic electroluminescent devices comprising the same. By comprising specific combinations of compounds according to the present disclosure as the plurality of host materials or by comprising a compound according to the present disclosure, it is possible to provide organic electroluminescent devices having improved lifespan characteristics compared to conventional organic electroluminescent devices.

Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. An organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifespan properties compared to a conventional organic electroluminescent device can be provided by including the specific combination of compounds according to the present disclosure as a plurality of host materials or by including the compound according to the present disclosure.

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising at least one compound represented by formula 1 and a second host material comprising at least one compound represented by formula 2, and an organic electroluminescent device comprising the same. An organic electroluminescent device having significantly improved lifetime properties is provided by comprising a specific combination of compounds according to the present disclosure as host materials.

Abstract: Provided a digital virtual currency issued by matching the digital virtual currency with a biometric authentication signal, which is formed so that fingerprint or finger vein authentication information matches with and is stored in each basic unit of a file of the virtual currency by a matching program, and thus sender's fingerprint or finger vein authentication information may be converted into recipient's fingerprint or finger vein authentication information by a blockchain-based digital virtual currency transaction guidance server, a sender terminal is configured to determine whether the file of the virtual currency matches the fingerprint or finger vein authentication information, and the blockchain-based digital virtual currency transaction guidance server determines whether there is a request for converting and conversion for the sender's fingerprint or finger vein authentication information matching with and stored in the file of the virtual currency into the recipient's fingerprint or finger vein auth

Abstract: A wireless/wired integrated biometric authentication terminal having a multiple safety lock function is provided. A customer payment system is formed in an electronic cover of the integrated biometric authentication terminal. The electronic cover has at least one of a fingerprint and finger vein authentication processing unit formed on one side, as a groove on which a finger can be put, to interoperate with the customer payment system of the POS terminal and a card information authentication processing unit formed on the other side and configured to interoperate with the customer payment system of the POS terminal to perform authentication processing on payment with a customer's card information. A customer LCD display unit for displaying a payment amount is formed on an upper front end of the electronic cover.

Abstract: Provided is an input and output integrated module for simultaneously linking biometric information algorithms, which includes an integrated module for simultaneously authenticating fingerprints and finger veins which includes a fingerprint module, a finger vein module, and a conversion module, wherein: the fingerprint module scans a fingerprint in an image sensor, compares the scanned image with a previously-stored image, and outputs a registered authentication code of a corresponding person as a specific serial communication signal when there is a person having a fingerprint identical to the previously-stored image; the finger vein module scans a finger vein in a camera image sensor after light of an infrared light-emitting diode passes through a finger, compares the scanned image with a previously-stored image, and outputs a registered authentication code of a corresponding person as a specific serial communication signal when there is a person having a finger vein identical to the previously-stored image.

Abstract: A thermal adhesive containing a resin component includes an epoxy resin and an inorganic filler, where the inorganic filler includes tetrapod zinc oxide and alumina nanofiber, where the inorganic filler may further include at least one selected from among spherical alumina, AlN and BN, and where the resin component may further include a curing agent and a catalyst.

Abstract: Provided is a polyhedral three-dimensional imaging device for simultaneously authenticating fingerprint and finger veins having an integrated imaging and authenticating device for capturing images of fingerprint and finger veins. An object accommodation unit includes on the top and bottom an upper scanning panel case, which forms a finger mounting portion, and a lower scanning panel case which accommodates the full length part of the upper scanning panel case. A scanning panel, which is for simultaneously capturing images of fingerprint and finger veins, is provided on the upper part of the upper scanning panel case. The scanning panel has on the front and back a fingerprint finger-contact portion and a finger vein finger-non-contact portion forming a step.

Abstract: A financial transaction relay system includes a financial transaction relay server for relaying, through an authentication-free access, a financial transaction to be performed among a customer terminal, an electronic financial transaction system, and electronic commerce systems. The financial transaction relay server includes: a multi-safety lock module for processing authentication of a user who uses finger pulse authentication, fingerprint authentication, password authentication, and telephone number authentication of the customer terminal; and a middleware firewall.

Abstract: Provided are a CNT-polymer complex and a process for preparing the same. The CNT-polymer complex includes carbon nanotubes (CNT) coated with a block copolymer of a conjugated polymer and a non-conjugated polymer, wherein the non-conjugated polymer comprises at least one monomer selected from the group consisting of styrene, butadiene, isoprene, methacryl, acryl, acryl amide, methacryl amide, acrylonitrile, vinyl acetate, vinyl pyridine and vinyl pyrrolidone in which at least one selected from the group consisting of a sulfone group, carboxyl group, acryl group and phosphate group is protected with a protective group, and provides at least one dopant selected from the group consisting of a sulfone group, carboxyl group, acryl group and phosphate group by external stimuli so that self-doping is allowed; and the complex is soluble to an organic solvent in a neutral state but is insoluble to any solvent after subjecting it to external stimuli.

Abstract: Provided are a CNT-polymer complex and a process for preparing the same. The CNT-polymer complex includes carbon nanotubes (CNT) coated with a block copolymer of a conjugated polymer and a non-conjugated polymer, wherein the non-conjugated polymer comprises at least one monomer selected from the group consisting of styrene, butadiene, isoprene, methacryl, acryl, acryl amide, methacryl amide, acrylonitrile, vinyl acetate, vinyl pyridine and vinyl pyrrolidone in which at least one selected from the group consisting of a sulfone group, carboxyl group, acryl group and phosphate group is protected with a protective group, and provides at least one dopant selected from the group consisting of a sulfone group, carboxyl group, acryl group and phosphate group by external stimuli so that self-doping is allowed; and the complex is soluble to an organic solvent in a neutral state but is insoluble to any solvent after subjecting it to external stimuli.

Abstract: A method is provided for preparing infertility-induced, genetically modified grass. It comprises a) exposing a flower of genetically modified grass to a physical mutagen; (b) culturing the genetically modified grass exposed to the physical mutagen to produce seeds thereof; and (c) culturing the seeds to select an infertility-induced species.

Abstract: A method is provided for preparing infertility-induced, genetically modified grass. It comprises a) exposing a flower of genetically modified grass to a physical mutagen; (b) culturing the genetically modified grass exposed to the physical mutagen to produce seeds thereof; and (c) culturing the seeds to select an infertility-induced species.