Abstract:
This invention relates to a negative active material for a lithium secondary battery, a method of preparing the same and a lithium secondary battery including the same. This negative active material exhibits high capacity and superior cycle-life characteristics and is thus usefully employed in a lithium secondary battery which shows high capacity during high-rate charge•discharge.
Abstract:
Disclosed herein is a portable folding type hairstyling tool. The hairstyling tool includes a casing unit which also serves as a handle, and a hairstyling unit which is inserted into or unfolded from the casing unit to be used by pivoting. The hairstyling unit includes an electric heating part for applying heat to the hair, and the casing unit includes a power source. The hairstyling unit has a rotary switch around a hinge part, thus allowing power to be supplied to the electric heating part by a power source only when the hairstyling unit is unfolded from the casing unit.
Abstract:
Disclosed herein are a method of preparing Li-doped silica nanotubes using an anodic aluminum oxide (AAO) template, and a method of storing energy using the prepared Li-doped silica nanotubes. Unlike prior methods for preparing metal nanotubes, according to the disclosed preparation method, the Li-doped silica nanotubes having a uniform size can be easily obtained in mild conditions using a lithium precursor, a silica sol and an anodic aluminum oxide template. The preparation method comprises adsorbing the lithium precursor and the silica sol on the surface of the AAO template, drying the lithium precursor and the silica sol, adsorbed onto the AAO template, in a vacuum, to form nanotubes, and then drying the nanotubes. The Li-doped silica nanotubes prepared according to the disclosed method can be used as economical hydrogen storage materials, electrode materials for lithium secondary batteries, or energy storage sources for automobiles or other transportation means.
Abstract:
An air conditioning system can automatically increase or decrease a desired temperature of an indoor unit at a variable gradient smaller than the variable gradient per predetermined time of an outdoor temperature. Hence, the user does not have to directly change the desired temperature, thus increasing user's convenience. Also, in the event of a significant diurnal range in temperature, air conditioning sickness can be prevented since an optimum indoor temperature can be maintained. Moreover, the variable gradient of the desired temperature of a room is smaller than the variable gradient of an outdoor temperature, thus keeping the room pleasant.
Abstract:
The present invention provides a peptide represented by formula (I) of X1-Leu-X2-Leu-X3 wherein X1 represents Glu or Asp, X2 represents His, Lys or Arg, X3 represents Asp or Glu, with Glu, Asp, Leu, His, Lys and Arg being respectively glutamic acid, aspartic acid, leucine, histidine, lysine and arginine; or a pharmaceutically acceptable salt thereof; a composition for the treatment or prevention of at least one selected from cartilage damage and arthritis, containing the same peptide or a pharmaceutically acceptable salt thereof as an active ingredient; and a composition containing the same peptide or a pharmaceutically acceptable salt thereof and TGFβ1. The above-mentioned peptide or a pharmaceutically acceptable salt thereof is effective for the treatment and/or prevention of cartilage damage and/or arthritis and is capable of exhibiting effects of the regeneration of cartilage tissue, the inhibition of the expression of cartilage tissue matrix degrading enzyme and/or the inhibition of cartilage tissue ossification.