• Title/Summary/Keyword: $Ho^{3+}$

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Alignment of Tilted TEM Images for 3D Reconstruction (3차원 복원을 위하여 특정 투사각도에서 획득한 TEM 영상열의 정렬)

  • Lee, Jun-Ho;Lee, Ji-Ho;Kim, Dong-Sik
    • Proceedings of the IEEK Conference
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    • 2007.07a
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    • pp.207-208
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    • 2007
  • In this paper, the tilted image sequence, which is obtained the transmission electron microscopy (TEM) for a 3D reconstruction, is aligned based on the fiducial marker method. A direct correlation method is also conducted between adjacent tilted images for the performance comparison. Using real TEM tilted images, we can successfully perform the alignment.

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Anaerobic Treatment of Nitrate in Landfill Leachate (쓰레기 매립장 침출수 중 질소저감방안)

  • Kwon, Young Ho;Kim, Ho Ju
    • Journal of Korean Society of Water and Wastewater
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    • v.12 no.4
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    • pp.70-77
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    • 1998
  • On this study, removal ability of nitrate was researched in the anaerobic zone arounding collection pipes in landfill. Stability state time of column was after 20 days and 20~90ml/day in flux. In this time, removal rate of phosphate was about 80%. Removal ability and average removal rate of CODCr is $36g/m^3{\cdot}d$, 25.3%, respectively. It was that reactor is able to remove more nitrate. Maximum nitrate removal ability was $4.83g/m^3{\cdot}d$.

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Role of heme oxygenase-1 expression by dietary phytoconstituents: A nutritional cytoprotective strategy for human diseases

  • Lee, Seung Eun;Park, Yong Seek
    • CELLMED
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    • v.3 no.1
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    • pp.1.1-1.7
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    • 2013
  • The present review investigates the role of the cytoprotective enzyme heme oxygenase-1 (HO-1) in human diseases and explores strategies for its clinical use. In recent years, there has been a growing evidence, for the beneficial effects of some phytoconstituents via induction of HO-1 expression, contained in commonly used spices, fruits, and herbs, in preventing various pathologic conditions, including cancer, diabetes, and cardiovascular diseases. HO-1 catalyzes the rate-limiting step in heme catabolism to generate ferrous iron, carbon monoxide, and biliverdin. HO-1 is reported to play crucial roles in cellular protection, such as anti-inflammatory, anti-proliferative and anti-apoptotic effects. These evidences indicate that HO-1 may functions as a potential therapeutic target in various human diseases. The article highlights the current status of the development of the HO-1 modulation pathway using dietary phytoconstituents.

Optical Properties of $TIGaSe_2$:Ho Single Crystals ($TIGaSe_2$:Ho 단결정의 광학적 특성)

  • 윤창선;노정숙;정상조;진문석;박홍이;송호준;김화택
    • Journal of the Korean Vacuum Society
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    • v.4 no.4
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    • pp.407-412
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    • 1995
  • TIGaSe2:Ho 결정에 대한 간접전이 에너지간격의 온도의존성은 각각 1차 상전이와 2차 상전이에 상당하는 100K와 108K에서 변칙특성을 보여주었다. TIGaSe2:Ho 결정에서 Ho3+이온에 긴인된 5I8$\longrightarrow$5I7과 5I8$\longrightarrow$5F5의 두 광학적 전이가 광흡수와 광전도도 스펙트라로부터 관측되었다. TIGaSe2와 TIGaSe2:Ho 결정의 열자극전류로부터 고유결함과 Ho 불순물에 관련된 양공 덫을 발견하였다.

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