• 제목/요약/키워드: Chang'e-3

검색결과 2,347건 처리시간 0.025초

Belief Propagation 스테레오 매칭을 이용한 다시점 무안경식 3차원 입체 TV를 위한 중간 영상 합성 (Intermediate View Reconstruction for Multiview 3D Displays Using Belief Propagation-based Stereo Matching)

  • 김장명;박성찬;정홍
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2008년도 하계종합학술대회
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    • pp.817-818
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    • 2008
  • In the present paper we propose a new method of intermediate view reconstruction between stereo images using belief propagation_based stereo matching. Intermediate view reconstruction is an important step for multiview 3D display. Many previous paper about intermediate view reconstruction using depth information to synthesize interview though stereo matching were proposed. But depth information is different to estimated accurately. In the present paper, in order to obtain accurate depth information, belief propagation_based stereo matching was used.

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c-Cbl Acts as an E3 Ligase Against DDA3 for Spindle Dynamics and Centriole Duplication during Mitosis

  • Gwon, Dasom;Hong, Jihee;Jang, Chang-Young
    • Molecules and Cells
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    • 제42권12호
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    • pp.840-849
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    • 2019
  • The spatiotemporal mitotic processes are controlled qualitatively by phosphorylation and qualitatively by ubiquitination. Although the SKP1-CUL1-F-box protein (SCF) complex and the anaphase-promoting complex/cyclosome (APC/C) mainly mediate ubiquitin-dependent proteolysis of mitotic regulators, the E3 ligase for a large portion of mitotic proteins has yet to be identified. Here, we report c-Cbl as an E3 ligase that degrades DDA3, a protein involved in spindle dynamics. Depletion of c-Cbl led to increased DDA3 protein levels, resulting in increased recruitment of Kif2a to the mitotic spindle, a concomitant reduction in spindle formation, and chromosome alignment defects. Furthermore, c-Cbl depletion induced centrosome over-duplication and centriole amplification. Therefore, we concluded that c-Cbl controls spindle dynamics and centriole duplication through its E3 ligase activity against DDA3.

Characterization of Black Ginseng Extract with Acetyl- and Butyrylcholinesterase Inhibitory and Antioxidant Activities

  • Yun, Beom-Sik;Lee, Mi-Ra;Oh, Chang-Jin;Cho, Jeong-Hee;Wang, Chun-Yan;Gu, Li Juan;Mo, Eun-Kyung;Sung, Chang-Keun
    • Journal of Ginseng Research
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    • 제34권4호
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    • pp.348-354
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    • 2010
  • Black ginseng and white ginseng were extracted with 80% ethanol and evaluated for relative ginsenoside composition, acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activities, and antioxidant properties. As analyzed by HPLC, black ginseng contained a greater proportion of ginsenoside $Rg_3$ compared to white ginseng. White ginseng was characterized by undetectable ginsenoside $Rg_3$ but it contained more total ginsenosides than black ginseng. Black ginseng extract exhibited higher (p<0.05) free radical-scavenging activity, as well as higher antioxidant activities than white ginseng against 2,2-diphenyl-1-picryl-hydrazyl, superoxide dismutase, and xanthine oxidase, despite the fact that the total saponin content was higher in white ginseng than black ginseng. In addition, the black ginseng extract displayed greater AChE and BChE inhibitory activities. These results suggest that black ginseng has stronger effects on anti-oxidation and AChE and BChE inhibition than white ginseng.

광학활성인 Λ$-[Co(EDDS)]^-$$[Co(en)_3]^{2+}$간의 입체선택적 전자전달 및 이온회합 (Stereoselective Electron Transfer and Ionic Association between Λ$-[Co(EDDS)]^-and [Co(en)_3]^{2+}$)

  • 이동진;오창언;도명기
    • 대한화학회지
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    • 제34권2호
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    • pp.159-164
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    • 1990
  • 광학활성인 [Co(EDDS)]- (EDDS = ethylenediaminedisuccinate) 착물의 절대구조는 옥탄트규칙과 분광학적인 자료에 따라 Λ-형임을 확인하였고, 절대구조가 확인된 Λ$-[Co(EDDS)]-$ 와 라세미체-$[Co(en)_3]^{3+}$간의 입체선택적 이온회합에서는 Λ$-[Co(EDDS)]-$ 와 Δ$-[Co(en)_3]^{3+}$간의 이온회합이 우선적으로 일어남을 조사하였다. 아울러 Λ$-[Co(EDDS)]-$ 와 라세미체$-[Co(en)_3]^{2+}$간의 입체선택적 전자전달반응에서는 착물간의 입체선택적 이온회합에 따라 Δ$[Co(en)_3]^{3+}$가 14% e.e (e.e = enantiomeric excess)로 생성되었다.

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Pseudomonas sp. strain DJ77 균주에서 extradiol dioxygenase 를 암호화하고 있는 phnE 유전자의 염기배열

  • 김영창;신명수;윤길상;박영순;김욱현
    • 미생물학회지
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    • 제30권1호
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    • pp.8-14
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    • 1992
  • Pseudomonas sp. DJ77로부터 extradiol dioxygenase 유전자(phnE)를 클로닝하고 염기배열을 결정하였다. 921 bp의 open reading frame (ORF) 이 존재하였고 개시코돈 앞에서 Shine-Dalgarno sequence를 발견하였다. phnE 유전자에서 만들어지는 PhnE 단백질은 분자량이 34,449 Da 인데 SDS-polycrylamide gel 전기영동에 의해 측정된 분자량과 일치하였다. PhnE는 NahH, XylE, DmpB 등과 아미노산 배열의 상동성의 약 50% 였다. DJ77에는 bphC와 같은 3형의 extradiol dioxygenase 유전자는 발견할 수 없었다. DJ77 과 JM101(pPE17)은 catechol, 3-methylcatechol, 4-methylcatechol, 2, 3-dihydroxybiphenyl 등의 기질을 meta-cleavage 하여 노란색 화합물을 생성할 수 있었다.

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