• 한국생물공학회:학술대회논문집
• /
• 2005.10a
• /
• pp.668-671
• /
• 2005

In this study, the full gene of the putative ${\beta}-1,3-glucan$ synthase catalytic subunit(gi:40556679) in Agrobacteriujm sp. ATCC31750 was cloned into E. coli BL21(DE). We found that putative ${\beta}-1,3-glucan$ synthase catalytic subunit full gene mutant(E. coli mutant FC) produced soluble glucan.instead of curdlan(insoluble glucan).

• Proceedings of the Korea Concrete Institute Conference
• /
• 2010.05a
• /
• pp.225-226
• /
• 2010

On this study, Aggregate union by various admixtures which is one of the methods to improve concrete performance has contributed to improvement of concrete strength and durability.

• Proceedings of the Microbiological Society of Korea Conference
• /
• 2002.10a
• /
• pp.151-158
• /
• 2002

• Proceedings of the Korean Vacuum Society Conference
• /
• 2003.08a
• /
• pp.170-170
• /
• 2003

• 대한생식의학회:학술대회논문집
• /
• 2006.11a
• /
• pp.114-114
• /
• 2006

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2008.04a
• /
• pp.506-507
• /
• 2008

• Proceedings of the IEEK Conference
• /
• 2006.06a
• /
• pp.101-102
• /
• 2006

Similar to Orthogonal Frequency Division Multiplexing (OFDM), a Single Carrier with Frequency Domain Equalization (SC-FDE) system is computationally efficient since equalization is performed on a block of data in the frequency domain. In coherent QAM schemes, the mean phase rotation error caused by the residual carrier frequency offset may lead to serious degradation. When the frequency equalizer is combined with the mean phase error tracking algorithm, its performance can be enhanced noticeably.

• Proceedings of the KIEE Conference
• /
• 2004.11a
• /
• pp.180-182
• /
• 2004

Polycrystalline $BaTiO_3/SrTiO_3$ powder was prepared by sol-gel process and the multilayered thick films were prepared on the $Al_2O_3$ substrates by screen printing method. The films were sintered at $1400^{\circ}C$ for 2 hours in the air. The structural and dielectric properties were investigated, The X-ray diffraction (XRD) patterns indicate that the BST phase and porocity were formed in the interface of $BaTiO_3/SrTiO_3$ multilayered thick films. The dielectric constant and the dielectric loss of the BT/ST/BT/ST multilayered thick films were about 247 and 0.84% at 1MHz.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2003.05c
• /
• pp.291-294
• /
• 2003

The circuit substrate was made from the Low Temperature Cofired Ceramics(LTCC) that a $\varepsilon_\gamma$ was 7.8. Accumulated Varactor and the low noise transistor which were a Surface Mount Device-type element on LTCC substrate. Let passive element composed R, L, C with strip-line of three dimension in the multilayer substrate circuit inside, and one structure accumulate band-pass filter, resonator, a bias line, a matching circuit, and made it. Used Screen-Print process, and made Strip-line resonator. A design produced and multilayer-type VCO(Voltage Controlled Oscillator), and recognized a characteristic with the Spectrum Analyzer which was measurement equipment. Measured multilayer structure VCO is oscillation frequency 1292[MHz], oscillation output -28.38[dBm], hamonics characteristic -45[dBc] in control voltage 1.5[V], A phase noise is -68.22[dBc/Hz] in 100 KHz offset frequency. The oscillation frequency variable characteristic showed 30[MHz/V] characteristic, and consumption electric current is approximately 10[mA].

• Proceedings of the KIPE Conference
• /
• 2011.11a
• /
• pp.281-282
• /
• 2011

본 연구에서는 DC마이크로그리드의 전력품질을 향상시키기 위한 에너지 저장장치의 Power Balancing 제어기법에 대하여 기술하고 있다. 제안하는 시스템의 동작 타당성을 체계적으로 분석하기 위해 PSCAD/EMTDC 소프트웨어를 이용한 마이크로그리드 모델을 개발하였으며 여러 사례 적용에 대한 모의실험을 통해 제어기법의 타당성을 검증하였다.