• Digital Contents
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• no.10 s.113
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• pp.70-79
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• 2002

KBS인터넷(크레지오닷컴)과 인터넷MBC(iMBC), SBS인터넷(SBSi) 등 공중파 방송사의 인터넷 방송 자회사들은 디지털 TV시대 준비를 위한 '조직 안정'과 '수익모델 다각화'에 총력을 기울이고 있다. KBS인터넷은 올 9월 KBS인터넷으로 사명을 바꾸며 본격적인 콘텐츠 비즈니스에 나섰고, iMBC는 공영성과 상업성 두 마리 토끼를 모두 잡겠다는 전략으로 T-Commerce를 위한 준비를 진행중이다. 지난해 9월 유료화를 선언, 성공모델로 자리잡고 있는 SBSi도 연내 코스닥 등록을 앞두고 수익성 강화에 혼신의 힘을 쏟고 있다. 3사3색 공중파 인터넷 방송국을 취재했다.

• The Optical Journal
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• s.111
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• pp.29-31
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• 2007

한국기초과학지원연구원(www.kbsi.re.kr/upel) 초정밀가공팀(팀장.김건희)에서는 2005년부터 기존의 측정분석위주의 단순지원에서 국가적 수요에 대응하는 대형첨단연구장비의 국산화를 위한 기술개발에 역점을 두고 있다. 이를 위한 기반기술로써 초정밀 가공 및 측정 장비의 설치운영을 통한 첨단연구장비의 핵심부품을 개발하고 있다. 특히 천문관측용 적외선(IR) 광학계의 초정밀가공기술 개발을 통한 항공우주용광학계의 국산화 기술 향상에 기여하고 있다.

• Proceedings of the Korean Biophysical Society Conference
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• 1996.07a
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• pp.31-31
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• 1996

The double-stranded panhandle structure of the influenza virus RNA is important for the replication, transcription and packaging into the virion of the vRNA. The solution structure of a 34-nucleotide-long RNA which contains the conserved panhandle sequences has been investigated by one- and two-dimensional NMR spectroscopies. (omitted)

• Bulletin of the Korean Chemical Society
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• v.26 no.8
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• pp.1166-1167
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• 2005

• Proceedings of the Korean Magnestics Society Conference
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• 2015.11a
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• pp.162-163
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• 2015

• Proceedings of the Korean Vacuum Society Conference
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• 2004.02a
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• pp.96-96
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• 2004

• Proceedings of the Korean Vacuum Society Conference
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• 2004.02a
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• pp.102-102
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• 2004

• Korean Journal of Crystallography
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• v.16 no.2
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• pp.141-148
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• 2005

It is well known that the general metals have a lot of grain boundaries. The grain boundaries play a negative role to increase the resistivity and to decrease the conductivity. The small resistivity and the large conductivity have been a goal of the material scientists, and no signal noise, perfect signal transfer, and the realization of the real sound are the dream of electronic engineers and audio manias. Generally, oxygen free copper (OFC) and Ohno continuous casting (OCC) copper cables have been used for the purpose of the precise signal transfer and low noise. However they still include a lot of grain boundaries. In our study, we have grown the single crystal by the Czochralski method and succeeded to produce single crystal wires from the crystal in the dimension of $0.5{\times}0.5{\times}2500mm$. The produced wire still possesses very good single crystal properties. We observed the structure of the wire, and measured the resistance and impedance. Glow Discharge Spectrometer (GDS) was used for analyzing the compositions of copper single crystals and commercial copper. Current-Voltage curve, resistance, total harmonic distortion and speaker frequency response were measured for comparing electrical and acoustic properties of two samples.

• Bulletin of the Korean Chemical Society
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• v.33 no.10
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• pp.3248-3252
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• 2012

Vibrio extracellular metalloprotease (vEP), secreted from Vibrio vulnificus, shows various proteolytic function such as prothrombin activation and fibrinolytic activities. Premature form of vEP has an N-terminal (nPP) and a C-terminal (C-ter100) region. The nPP and C-ter100 regions are autocleaved for the matured metalloprotease activity. It has been proposed that two regions play a key role in regulating enzymatic activity of vEP. Especially, C-ter100 has a regulatory function on proteolytic activity of vEP. C-ter100 domain has been cloned into the E. coli expression vectors, pET32a and pGEX 4T-1 with TEV protease cleavage site and purified using gel-filtration chromatography followed by affinity chromatography. To understand how C-ter100 modulates proteolytic activity of vEP, structural studies were performed by heteronuclar multi-dimensional NMR spectroscopy. Backbone $^1H$, $^{15}N$ and $^{13}C$ resonances were assigned by data from standard triple resonance and HCCH-TOCSY experiments. The secondary structures of vEP C-ter100 were determined by TALOS+ and CSI software based on hydrogen/deuterium exchange. NMR data show that C-ter100 of vEP forms a ${\beta}$-barrel structure consisting of eight ${\beta}$-strands.

• Journal of the Korean Ceramic Society
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• v.43 no.1 s.284
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• pp.22-27
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• 2006

The electronic band structures of Metal-doped titanium dioxide, M-doped $TiO_2$ (M=Co, Cr, Fe), have been studied by using XRD, UV-vis diffuse reflectance spectrometer and FP-LAPW (Full-Potential Linearized Augmented-Plane-Wave) method. The UV-vis of M-doped $TiO_2$ (M=Co, Cr, Fe) showed two absorption edges; the main edge due to the titanium dioxide at 387 nm and a shoulder due to the doped metals at around 560 nm. The band gap energies of Co, Cr and Fe-doped $TiO_2$ calculated by FP-LAPW method were 2.6, 2.0, and 2.5 eV, respectively. The theoretically calculated band gap energy of $TiO_2$ by using FP-LAPW method was the same as experimental results. FP-LAPW method will be useful for fabrication and development of photo catalysts working under visible light.