Abstract: A drone system for synthetic aperture radar (SAR) operation to control and operate an aerial vehicle mounted with an SAR may comprise: a flight control module configured to control a low level of the aerial vehicle; a high-level control module configured to perform communication for swarm control of the aerial vehicles, receive flight information from the flight control module, and transmit a command to the flight control module; a link module configured to link the flight control module and the high-level control module; and a data acquisition board connected to the high-level control module and configured to store a flight log from the high-level control module and radar data from a radar module provided with the SAR.

Abstract: A roller for supporting a material according to an embodiment of the present invention includes: a rotation shaft; a pipe having a space in which the rotation shaft is inserted; a deforming part that is connected to the rotation shaft and the pipe to deform the pipe; and a support part that is installed at the pipe to support the material. The deforming part includes: a thread portion provided on the rotation shaft; a nut part screwed to the thread portion; an inclined part that is disposed at an inner surface of the pipe and that is pressed by the nut part according to rotation of the rotation shaft; and a driving source that is connected to the rotation shaft to rotate the rotation shaft.

Abstract: The present disclosure relates to a ternary photoactive layer composition and an organic solar cell including the same. According to the present disclosure, excessive crystal growth and aggregation can be prevented during large-area coating of a photoactive layer, uniform morphology can be achieved without significant phase separation, an organic solar cell with superior photovoltaic cell characteristics can be realized, and superior performance may be maintained even after long-term exposure to heat by preventing the morphological change of the photoactive layer.

Abstract: A lithium rechargeable battery having corrosion resistance and a method of making the same. In the lithium rechargeable battery including a metal case, a cap plate and terminals, a protective layer is formed on at least portions of surfaces of the metal case, the cap plate and the terminals, and the protective layer is formed of a protective layer forming composition comprising at least one hydrophobic compound selected from the group consisting of substituted or unsubstituted 1,2,3-benzotriazole, alkoxysilance having 1 to 20 carbons, vinylakoxy silane having 1 to 20 carbons, and (meth)acryl silane, and chromic oxide.

Abstract: A lithium rechargeable battery having corrosion resistance and a method of making the same. In the lithium rechargeable battery including a metal case, a cap plate and terminals, a protective layer is formed on at least portions of surfaces of the metal case, the cap plate and the terminals, and the protective layer is formed of a protective layer forming composition comprising at least one hydrophobic compound selected from the group consisting of substituted or unsubstituted 1,2,3-benzotriazole, alkoxysilance having 1 to 20 carbons, vinylakoxy silane having having 1 to 20 carbons, and (meth)acryl silane, and chromic oxide.