Abstract: A keypad for an electronic device having metallic texture has rigidity and elasticity equivalent to those of stainless steel. The keypad is manufactured and includes a metal alloy board, a keypad body manufactured by primarily thermal-treating the metal alloy board to a rigidity enough to be molded and molding the primarily thermal-treated metal alloy board with a press, a button portion formed by secondarily thermal-treating the keypad body to cure the keypad body and etching the secondarily thermal-treated keypad body by means of etching processing, and urethane rubber and a silicon pad attached to a back surface of the keypad body which has undergone anodizing processing and various colorations.

Abstract: A nonvolatile memory device includes a semiconductor substrate, a charge-trap structure disposed on the semiconductor substrate, which includes an insulating film and a plurality of carbon nanocrystals embedded in the insulating film, and a gate disposed on the charge-trap structure. The nonvolatile memory device may exhibit memory hysteresis characteristics with improved reliability.

Abstract: Disclosed are a gene coding for L-arabinose isomerase derived from Thermotoga neapolitana 5068, a thermostable arabinose isomerase expressed from the gene, a recombinant expression vector containing the gene, a microorganism transformed with the expression vector, a process for preparing thermostable arabinose isomerase from the transformant ,and a process for preparing D-tagatose employing the arabinose isomerase. Since the recombinant arabinose isomerase is highly thermostable and can produce tagatose with high yield at high temperature, it can be efficiently applied in pharmaceutical and food industries.

Abstract: Disclosed is a manufacturing method of a keypad for a mobile phone and the keypad manufactured thereby, in which a vacuum deposition layer and a cellophane paper are attached to a lower surface of a key in the keypad.

Abstract: Disclosed is a plating method which, includes preparing a plating base; printing a plating pattern on a plating surface of the plating base; and plating the plating surface of the plating base. During plating, a plating layer is formed on a portion where the plating pattern is not printed. The method is provided for contributing to diversification of the external appearance of a compact type device such as portable terminals, is capable of printing three-dimensional patterns as well as a trademark and a logo, and is capable of highlighting the metallic texture together with three dimensional solid patterns.

Abstract: Disclosed is a manufacturing method of a keypad for a mobile phone and the keypad manufactured thereby, in which a vacuum deposition layer and a cellophane paper are attached to a lower surface of a key in the keypad.

Abstract: Provided is a key for a portable terminal. The key includes a metallic case including a plated layer exposed to the outside of the portable terminal and an electro-forming layer formed on the inner side of the plated layer and a synthetic resin layer formed on the inner side of the electro-forming layer. The synthetic resin layer is formed on the inner side of the electro-forming layer by mounting the metallic case in a mold and performing insert injection. Since the key includes the electro-forming layer made of copper and the plated layer plated on the electro-forming layer on a surface for forming the exterior, it can be easily manufactured and can contribute to improvement of the exterior design of the portable terminal.

Abstract: Provided are an SOI substrate, memory devices using the SOI substrate, and a method of manufacturing the same. The SOI substrate includes a thermal oxide layer pattern which minimizes leakage current but allows back biasing and heat dissipation through the substrate. The SOI substrate also includes a metal-gettering site to further minimize leakage current.

Abstract: Disclosed are a novel gene coding for L-arabinose isomease derived from Thermotoga neapolitana 5068, a thermostable arabinose isomerase expressed from the said gene, a recombinant expression vector containing the said gene, a microorganism transformed with the said expression vector, a process for preparing thermostable arabinose isomerase from the said transformant and a process for preparing D-tagatose employing the said enzyme. Since the recombinant arabinose isomerase is highly thermostable and can produce tagatose with high yield at high temperature, it can be efficiently applied in pharmaceutical and food industries.

Abstract: Disclosed are a novel gene coding for L-arabinose isomease derived from Thermotoga neapolitana 5068, a thermostable arabinose isomerase expressed from the said gene, a recombinant expression vector containing the said gene, a microorganism transformed with the said expression vector, a process for preparing thermostable arabinose isomerase from the said transformant and a process for preparing D-tagatose employing the said enzyme. Since the recombinant arabinose isomerase is highly thermostable and can produce tagatose with high yield at high temperature, it can be efficiently applied in pharmaceutical and food industries.