Abstract: The present invention relates to a glycol chitosane derivative, a preparation method thereof and a drug delivery system comprising the same. More specifically, the invention relates to a glycol chitosan derivative, which can form nano-sized self-assembled structures and has both temperature sensitivity and biodegradability so as to be suitable for use as a drug delivery system, as well as a preparation method thereof and a drug delivery system comprising the same.
Type:
Application
Filed:
December 21, 2010
Publication date:
March 1, 2012
Applicant:
Chungnam National University Industry Collaboration Foundation
Abstract: Disclosed is a high sensitive gas sensor using a carbon material containing an ionized metal catalyst and a method of manufacturing the same. The method includes the steps of: (1) preparing a hydroxide solution by dissolving a hydroxide in a distilled water; (2) dissolving a metal catalyst in the hydroxide solution; (3) immersing the carbon material in a solution obtained through step (2) and stirring the carbon material; (4) heat-treating a mixture obtained through step (3); (5) cleaning the heat-treated carbon material obtained through step (4); (6) drying the carbon material cleaned through step (5); and (7) manufacturing the gas sensor by loading the carbon material obtained through step (6) on a substrate. The gas sensor having high sensitivity and responsiveness with respect to a target gas even in a normal temperature is obtained.
Type:
Application
Filed:
December 21, 2010
Publication date:
February 23, 2012
Applicant:
Chungnam National University Industry Collaboration Foundation
Inventors:
Young Seak LEE, Seok Chang Kang, Sung Kyu Lee, Ji Sun Im
Abstract: Disclosed is a method of manufacturing a gas sensor by using a nano-fiber including metal oxide. The method of manufacturing the gas sensor includes the steps of (1) mixing a polymer precursor with a solvent, (2) dispersing metal oxide into the mixture obtained through step (1), (3) preparing a nano-fiber by performing electro-spinning with respect to the mixture obtained through step (2), (4) oxidizing the nano-fiber obtained through step (3), (5) carbonizing the nano-fiber that has been oxidized through step (4), (6) activating the nano-fiber that has been carbonized through step (5), and (7) manufacturing the gas sensor by depositing the nano-fiber, which has been activated through step (6), between electrodes of a silicon wafer. The gas sensor is manufactured with superior sensitivity at a normal temperature and reliability.
Type:
Application
Filed:
December 15, 2010
Publication date:
June 16, 2011
Applicant:
Chungnam National University Industry Collaboration Foundation
Inventors:
Young Seak Lee, Seok Chang Kang, Sung Kyu Lee, Ji Sun Im
Abstract: The present invention discloses methods for analyzing the activity of lipoxygenase by using polyunsaturated lysophosphatidylcholine as a water-soluble substrate. In these methods, lipoxygenase activity can be analyzed without using detergents in reaction solution.
Type:
Grant
Filed:
May 9, 2007
Date of Patent:
May 10, 2011
Assignee:
Chungnam National University Industry Collaboration Foundation
Inventors:
Mee-Ree Kim, Dai-Eun Sok, Long-Shuang Huang
Abstract: The present invention discloses methods for analyzing the activity of lipoxygenase by using polyunsaturated lysophosphatidylcholine as a water-soluble substrate. In these methods, lipoxygenase activity can be analyzed without using detergents in reaction solution.
Type:
Application
Filed:
May 9, 2007
Publication date:
November 15, 2007
Applicant:
Chungnam National University Industry Collaboration Foundation
Inventors:
Mee-Ree Kim, Dai-Eun Sok, Long-Shuang Huang