• Title/Summary/Keyword: Yi Jun-yang

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Molecular Cloning and Characterization of Type 2 Metallothionein cDNA from Codonopsis lanceolata (S. et Z.) Trautv

  • In, Jun-Gyo;Lee, Bum-Soo;Yi, Tae-Hoo;Yu, Chang-Yeon;Yang, Deok-Chun
    • Korean Journal of Medicinal Crop Science
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    • v.13 no.5
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    • pp.288-292
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    • 2005
  • A class I type 2 metallothionein (CMet2) cDNA from taproot of Codonopsis lanceolata was isolated and characterized. A CMet2 cDNA was 572 nucleotides long and had an open reading frame of 234 bp with a deduced amino acid sequence of 78 residues (pI = 4.99). The deduced amino acid sequence of CMet2 matched to the previously reported type 2 metallothionein-like protein genes and showed 74% identity with that of G. max (BAD18377) and C. arietinum (CAA65009). Expression of CMet2 by the RT-PCR was increased at 1 hr after cadmium and hydrogen peroxide treatment, respectively.

A Multivariate Statistical Approach to Comparison of Essential Oil Composition from Three Mentha Species

  • Park, Kuen-Woo;Kim, Dong-Yi;Lee, Sang-Yong;Kim, Jun-Hong;Yang, Dong-Sik
    • Horticultural Science & Technology
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    • v.29 no.4
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    • pp.382-387
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    • 2011
  • The chemical composition of essential oils obtained from aerial parts in spearmint, apple mint and chocolate mint, was investigated by gas chromatography/mass spectrometry analyses. (-)-Carvone (33.0%) was quantitatively major compound in spearmint, followed by R-(+)-limonene (11.7%) and ${\beta}$-phellandrene (9.7%); (-)-carvone (37.4%) and germacrene D (11.9%) in apple mint; and (-)-menthol (34.3%), p-menthone (18.4%) and menthofuran (9.8%) in chocolate mint. Hierarchical cluster analysis and principle components analysis showed the clear difference in chemical composition of the three mint oils.

Characterization of Screen Printed phosphorous Diffusion Paste for Silicon Solar Cells (스크린 프린팅을 이용한 태양전지 에미터 형성에 관한 연구)

  • Gong, Dae-Yeong;Yang, Doo-Hwan;Kim, Sun-Yong;Lee, Yong-Woo;Kwon, Tae-Young;Yun, Seog-Woo;Lee, Kwang-Il;Yi, Jun-Sin
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.06a
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    • pp.111-113
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    • 2009
  • This paper shows that you can achieve high quality N+ emitter layers using a screen printable phosphorous diffusion paste and firing in an infrared belt furnace. Spreading resistance measurement from a beveled sample is used to measure carrier concentration as a function of depth for different phosphorous concentrations. Contours of estimated sheet resistance are shown for different processing conditions. This paper describes newly developed low cost phosphorous pastes. It shows the characterization of the newly developed phosphorous paste (DP99-038). This low cost pastes can easily be printed and make 16% efficiency.

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SEDs and Beaming Effect for Fermi Blazars

  • Fan, Jun-Hui;Yang, Jiang-He;Liu, Yi;Yuan, Yu-Hai;Lin, Cao;Xiao, Hu-Bing
    • Journal of Astronomy and Space Sciences
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    • v.33 no.2
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    • pp.105-108
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    • 2016
  • In this work, based on our previous calculations of spectral energy distributions for a sample of Fermi blazars (Fan et al. 2015a), we calculated the radio loudness and performed correlation analyses. Our analysis results show that radio loudness is closely anti-correlated with synchrotron peak frequency and positively correlated with gamma-ray luminosity, suggesting that the gamma-ray emissions are strongly beamed.

PTCR Properties of $BaTiO_3$ Ceramic Variation of Dopant (APCVD법을 활용한 다결정 실리콘 박막의 전기적 특성 분석)

  • Yang, Jae-Hyuk;Kim, Jae-Hong;Yi, Jun-Sin
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.11a
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    • pp.319-320
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    • 2008
  • 본 연구에서는 대기압하에서 고품질의 산화막 증착을 목적으로 TEOS(Tetraethyl Orthosilicate)를 이용하여 APCVD법(Atmospheric Pressure CVD)으로 실리콘 산화막을 증착하고 하였으며, 특성 비교를 위하여 ICP-CVD를 이용하여 $SiH_4$$N_2O$ source gas를 이용하여 산화막을 증착하였다. 트랜지스터 제작후 Semiconductor measurement system을 이용하여 TFT의 전기적 특성을 측정 하였으며, 결과적으로 유기 사일렌을 사용한 경우 보다 우수한 전기적 특성을 확인할 수 있었다.

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A Study on Eating Habits and Food Preference of Rural Elementary School Students (농촌초등학생의 식습관 및 식품기호에 관한 연구)

  • Jun, Sam-Nyeo;Ro, Hee-Kyung
    • Journal of the Korean Society of Food Culture
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    • v.13 no.1
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    • pp.65-72
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    • 1998
  • This study was undertaken to assess eating habits of 230 rural elementary school students living in ChunNam province. Anthropometric data showed that their mean height of girl students was significantly higher than that of boy students. Irregular eating pattern of girl students was noted. There was a significant difference in concerning on weight control between girls and boys. Girls especially view themselves as too obese even though their weight was in normal range and they were more concerned on weight control due to appearance. Nutrition education at school was an important factor ruling out peaky eating habits in participants. More effective nutrition education might be suggested to form a good eating habit which result in maintenance of ideal weight and promote health for rural elementary school students.

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하치조신경 전달마취 중 파절된 주사바늘

  • Jang, Jung-Hui;Song, Min-Seok;Kim, Hyeon-Min;Kim, Nam-Hun;Eom, Min-Yong;Koo, Hyun-Mo;Yi, Jun-Kyu;Yang, Byeong-Eon
    • The Journal of the Korean dental association
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    • v.44 no.2 s.441
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    • pp.139-144
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    • 2006
  • Local anesthesia is routine procedure in dental practices and has several complication. One of them, needle fracture is not uncommon in past, but rare in recent. The number of cases reported in the literature of broken needle in local anesthetic procedure has shown a marked decrease since the use of disposable spiral-constructed dental needle began. This complication results from lack of patient cooperation, inaccurate anesthetic technique, sudden movement of patient, error in the manufacturing procedure, use of short needle, and bending before use. Most common site is pterygomandibular space during inf. alveolar nerve block. In two patients, we removed broken needles under general anesthesia without complication. So we report cases with review of literatures.

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Power series solution of circular membrane under uniformly distributed loads: investigation into Hencky transformation

  • Sun, Jun-Yi;Rong, Yang;He, Xiao-Ting;Gao, Xiao-Wei;Zheng, Zhou-Lian
    • Structural Engineering and Mechanics
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    • v.45 no.5
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    • pp.631-641
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    • 2013
  • In this paper, the problem of axisymmetric deformation of the circular membrane fixed at its perimeter under the action of uniformly-distributed loads was resolved by exactly using power series method, and the solution of the problem was presented. An investigation into the so-called Hencky transformation was carried out, based on the solution presented here. The results obtained here indicate that the well-known Hencky solution is, without doubt, correct, but in the published papers the statement about its derivation is incorrect, and the so-called Hencky transformation is invalid and hence may not be extended to use as a general mathematical method.

The Improvement of the Data Overlapping Phenomenon with Memory Accessing Mode

  • Yang, Jin-Wook;Woo, Doo-Hyung;Kim, Dong-Hwan;Yi, Jun-Sin
    • Journal of Information Display
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    • v.9 no.1
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    • pp.6-13
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    • 2008
  • Mobile phones use the embedded memory in LDI (LCD Driver IC). In memory accessing mode, data overlapping phenomenon can occur. These days, various contents such as DMB, Camera, Game are merged to phone. Accordingly, with more data transmission, there would be more data overlapping phenomenon in memory accessing mode. Human eyes perceive this data overlapping phenomenon as simply horizontal line noise. The cause of the data overlapping phenomenon was analysed in this paper. The data overlapping phenomenon can be changed by the speed of data transmission between the host and LDI. The optimum memory accessing position can be defined. This paper proposes a new algorithm for avoiding data overlapping.