摘要:
Disclosed is a separator for a lithium secondary battery and a lithium secondary battery comprising the same. The separator may include a thermoplastic polyolefin-based polymer porous sheet and an aramid-based non-woven fabric sheet stacked on at least one surface of the polyolefin-based polymer porous sheet, wherein the polyolefin-based polymer sheet and the aramid-based non-woven fabric sheet are adhered with an adhesive, and the adhesive loses an adhesive performance at 80° C. or more to separate the two sheets. The separator has a shut-down function and excellent high-temperature shape stability.
摘要:
The present invention relates to a cathode active material for lithium secondary batteries with high safety, a method of preparing the same and lithium secondary batteries comprising the same. The cathode active material of the present invention comprises a lithium metal oxide secondary particle core portion formed by aggregation of lithium metal oxide primary particles; and a shell portion formed by coating the secondary particle core portion with an olivine-structured lithium iron phosphate oxide. The cathode active material of the present invention allows to manufacture lithium secondary batteries with improved safety, especially overcharge characteristics.
摘要:
Disclosed is an apparatus and method for retrieving multimedia contents represented in a Moving Picture Experts Group (MPEG) 7 by transforming a user query into an MPEG-7 query format. The method for retrieving multimedia contents includes: representing a user query by using an indicator indicating a specific region of a Moving Picture Experts Group 7 (MPEG-7) document and a reference for referring to the indicator; analyzing a meaning of the user query represented by using the indicator and the reference to thereby produce an analysis result; and retrieving multimedia contents according to the analysis result. The present research can satisfy more than two retrieval conditions within the same structure in an MPEG-7 query format and it can also clearly represent that two different MPEG-7 documents are referred to. Since the meaning of a user query is analyzed accurately during retrieval process, it is possible to precisely retrieve multimedia contents.
摘要:
This invention relates to a bacteriophage MPK6 (deposit number: KCCM 11044P) having a lytic activity to Pseudomonas aeruginosa, or a progeny bacteriophage thereof having a RFLP (Restriction fragment length polymorphism) DNA profile substantially equivalent to the bacteriophage MPK6. The present invention provides a bacteriophage MPK6 or a progeny bacteriophage thereof capable of treating a Pseudomonas aeruginosa infection disease, and suggests an anti-bacterial activity of MPK6 and its progeny bacteriophage using a mammalian and non-mammalian infection model. According to the present invention, the present bacteriophage MPK6 or progeny bacteriophage thereof represents very effective efficacy on treatment of P. aeruginosa-induced peritonitis-sepsis.
摘要:
A method for stabilizing a knowledge graph includes: generating a knowledge graph in which same entities in a semantic relation list between entities provided as an input are represented as a single node based on names and types of the entities; computing, on the knowledge graph, semantic similarities between all potential entity pairs of same entity types by comparing, for each potential entity pair, a type of relation associated with an entity in the entity pair and an opponent entity to the entity; and selecting, based on the semantic similarities, a representative entity from each of semantically similar entity pairs on the knowledge graph and integrating an opponent entity to the representative entity into the representative entity. The method further includes computing relation weighted values between the entities by using a graph analysis and statistic information, and adding the weighted values to the knowledge graph.
摘要:
Disclosed is a method for forming a buffer layer for growing gallium nitride single crystals on a sapphire substrate using hydride vapor phase epitaxy (HVPE), wherein the buffer layer is formed in the form of a doped vertical gallium nitride (GaN) single crystal film with a nanoporosity of 0.10 to 0.15 μm on the sapphire substrate by reacting HCl and NH3 as a Group III/V mix gas.The nanoporous buffer layer interposed on the interface between the sapphire substrate and galluim nitride reduces tensile stress generated by the difference in thermal expansion coefficient between gallium nitride and the sapphire substrate, enables growth of the gallium nitride layer to a thickness of 1 micrometer (m) to several millimeters (nm) without causing cracks, and reduces the lattice constant difference to improve crystallinity.
摘要:
Disclosed is a high heat resistance composite separator including a porous substrate having a plurality of pores, an inorganic coating layer formed on one surface of the porous substrate, the inorganic coating layer including a plurality of inorganic particles and a binder polymer disposed on a portion or all of surfaces of the inorganic particles to connect and bind the inorganic particles, and a high heat resistance polymer coating layer formed on the other surface of the porous substrate, the high heat resistance polymer coating layer including a high heat resistance polymer and inorganic particles dispersed in the high heat resistance polymer.
摘要:
Disclosed is an electrode active material including a core formed from one selected from the group consisting of lithium-containing transition metal oxide, a carbon material, a lithium metal, and a metal compound, or mixtures thereof, and a shell formed on a surface of the core and including lithium metal oxide particles and polymer, and a lithium secondary battery using the same.
摘要:
Disclosed are a cathode active material for lithium secondary batteries, a method for preparing the same, and lithium secondary batteries comprising the same. The cathode active material for lithium secondary batteries comprises a lithium metal oxide secondary particle core formed by aggregation of a plurality of lithium metal oxide primary particles; a first shell formed by coating the surface of the secondary particle core with a plurality of barium titanate particles and a plurality of metal oxide particles; and a second shell formed by coating the surface of the first shell with a plurality of olivine-type lithium iron phosphate oxide particles and a plurality of conductive material particles. The cathode active material for lithium secondary batteries allows manufacture of lithium secondary batteries having excellent thermal stability, high-temperature durability and overcharge safety.
摘要:
The present invention relates to an eco-friendly probiotic composition, and more particularly, to a probiotic composition for livestock production, comprising a lactic acid bacteria culture medium and an organic acid, wherein the organic acid is contained in an amount of 0.002 to 0.1 parts by weight relative to 1 parts by weight of the lactic acid bacteria culture medium. The present invention also relates to a method for preparing the composition. The eco-friendly probiotic composition of the present invention does not contain antibiotics and may exhibit complex effect of sterilization and virucidal effectiveness.