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김혜주,송현준,Nilüfer Çakmakçı,강희수,박종현,신명규,정영진 한국섬유공학회 2021 Fibers and polymers Vol.22 No.10
As the demand for wearable devices increases, compatible energy storage systems have been explored. Energysystems integrated into wearable devices require mechanical robustness and stable electrochemical performance undermechanical deformations such as bending and folding. Herein, the flexible supercapacitor is fabricated with surface modifiedcarbon nanotube (CNT) film and a cross-linked acrylamide@N',N'-methylenebisacrylamide (AAM@MBA) hydrogel tomount on wearable devices. CNT film is a promising candidate for the electrode of flexible supercapacitors owing to its highelectrical conductivity, surface area, flexibility, and excellent mechanical properties. The high ionic conductivity, goodviscoelasticity, and shock absorption of hydrogel polymers make them suitable electrolyte materials for flexiblesupercapacitors. The heat treatment under air atmosphere is conducted on CNT film to enhance the interfacial adhesion withhydrogel electrolyte. The flexible supercapacitor delivers 8.15 F g-1 of specific capacitance and shows 93 % of goodcapacitance retention up to 400 cycles. Furthermore, it works normally when bending stress is applied. The flexiblesupercapacitor in this study is expected to be used in wearable devices, thanks to its good performance and high flexibility.
폴리머 바인더의 선처리를 통한 압축형 복합화약으로부터 octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine의 회수 공정 개발
김혜주,김동우,허유진,박세원,이창하,안익성,이근득,Kim, Hyejoo,Kim, DongWoo,Huh, Eugene,Park, Sewon,Lee, Chang-Ha,Ahn, Ik-Sung,Lee, Keun Deuk 한국군사과학기술학회 2020 한국군사과학기술학회지 Vol.23 No.5
Extraction and anti-solvent crystallization were proposed to recover octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) from pressed polymer bonded explosives(PBXs). DXC-57 and DXC-59, whose polymeric binders are Estane and HyTemp with dioctyl adipate plasticizer, respectively, were used as pressed PBX models. Estane of DXC-57 was removed by washing with tetrahydrofuran prior to extraction, which enabled the crystallization of HMX at a low degree of supersaturation, sufficient to obtain β-form HMX. Using dimethyl sulfoxide and ethanol as the extraction solvent and the anti-solvent for crystallization, respectively, HyTemp and dioctyl adipate in DXC-59 were separated from HMX. The purity of recovered β-form HMX was higher than 99 %.
문헌정보학과 장애인서비스 교과과정에 관한 기초 연구 - 서울시 공공도서관 장애인서비스 및 문헌정보학과 장애인서비스 교과과정 현황 조사 -
김혜주 한국문헌정보학회 2012 한국문헌정보학회지 Vol.46 No.3
본 연구는 장애인서비스 전문사서 양성 교과과정 모형개발을 위한 기초연구이다. 이를 위하여 문헌을 통한 이론적 연구를 수행하고 국내 문헌정보학과 교육과정․장애인서비스 담당사서의 계속 교육과정 및 서울시 공공도서관의 장애인서비스 현황을 조사․분석하였다. 조사 결과를 요약하면 다음과 같다. 첫째, 학부․대학원 과정의 경우 현재 각각 한 곳에 장애인서비스 전문사서 양성과 관련된 교과과정이 개설되어 있었다. 둘째, 장애인서비스 담당사서의 계속 교육과정은 국립중앙도서관에서 2010년 처음 강좌를 개설한 이후 매년 강좌를 개최하고 있으며, 강좌 이수 후 설문조사를 실시하여 이수자들의 의견을 다음 강좌내용 선정에 반영하고 있다. 셋째, 현재 공공도서관을 이용하는 장애인은 시각장애인보다는 지체장애, 정신지체, 정서․행동장애, 자폐성 장애가 있는 이용자가 많은 것으로 나타났다. 장애인서비스는 관외대출서비스가 대부분을 차지하고 있었으며 일반자료를 대상으로 이루어지고 있었다. 전화인터뷰에 의하면 현재 장애인서비스를 적극적으로 수행하고 있는 소수 기관의 담당사서들은 장애인에 대한 이해, 장애인 문화프로그램 운영․기획에 관한 정보를 필요로 하고 있었다. This study aims to serve as the basis for the librarian training curriculum model for the disability services. To achieve this, a theoretical study was carried out through literature and investigated and analyzed on the disability services of Public Libraries in Seoul and on the status of Library and Information Science curriculum for the disability services in Korea. The research results are summarized as follows: First, only one university and one graduate school in Korea offers a curriculum for training librarians for the disability services. Second, since 2010 a continuing education program for librarians in charge of the disability service has been offered every year by the National Library of Korea, Librarians who completed this course have been surveyed for their opinions and the results have been reflected in the following course. Third, currently among the disabled users in public library the users with mental retardation, emotional and behavioral disorders, and autism are more than the visually impaired users. Most of the disability service has been a lending for general materials. According to telephone interviews, librarians who actively carry out the disability service need to understand the disability and, more information about operations and planning of cultural program for the disabled users.