• 제목/요약/키워드: NOE

검색결과 173건 처리시간 0.018초

지각과 몸: 노에의 이론을 중심으로 (Perception and Body: with a focus on Noe's theory)

  • 윤보석
    • 인지과학
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    • 제25권4호
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    • pp.277-302
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    • 2014
  • 이 논문의 목적은 지각의 본성에 대한 알바 노에의 행화이론(enactive theory)의 내용과 의의 그리고 문제점을 검토하는 데 있다. 다음 세 가지 이슈들을 중심으로 논의를 진행한다. (i) 과연 몸이 마음의 형성에 아주 특별한 기여를 한다고 볼 수 있는가? (ii) 노에가 두뇌중심주의에 대한 유효한 반대 증거들을 제시하고 있는가? (iii) 노에의 이론이 외적 대상들의 지각을 만족스럽게 설명하는가? 논문의 2장과 3장에서는 각각 (i)과 (ii)에 초점을 두고 노에의 이론에 대해 제기될 수 있는 비판을 다룰 것이다. 그런데 이러한 비판들은 결국 체화된 인지 일반에 대해 제기될 수 있는 비판들이다. 즉, 딱히 노에 이론에 국한된 문제점이라고 할 수 없다. 노에 이론의 특징과 핵심적인 의의를 드러내기 위해서는 (iii)에서 제기된 "지각 현존의 문제(the problem of perceptual presence)"에 주목할 필요가 있다. 이 문제에 대한 노에의 설명이 정확히 어디에 문제점이 있는 지를 밝히는 것이 4장의 목적이다.

NOE 실험의 대용으로 응용될 수 있는 PFG Long-range COSY NMR 실험 (Application of Pulsed Field Gradient Long-range COSY-NMR for the Assignment of Geminal Protons on Rigid System: supplemental method of NOE Experiment)

  • 이석근
    • 분석과학
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    • 제18권1호
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    • pp.85-88
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    • 2005
  • Antiphase character of cross peaks in long-range COSY is modulated by changing the fixed delay time and used to assign diastereotopic methylene protons on rigid systems which could produce unpredictable NOE phenomena because of complicate coupling spins.

An influence of the exchange rate on NOE intensities of a ligand: Application to 37kDa trp-holo-repressor/operator DNA complex

  • Lee, Donghan;Lee, Weontae
    • 한국자기공명학회논문지
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    • 제2권1호
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    • pp.33-40
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    • 1998
  • The cross peak intensities versus mixing times of 2D NOESY spectrum for a corepressor L-trp were simulated for the case of a ligand exchanging between free (AX) and bound (A'X') forms in protein/DNA complex. The direct NOE (I(AX)) of the free ligand exhibited a small positive intensity indicative of the strong dominant influence of the bound ligand. The exchange-mediated NOE peak (I(AX')) was very sensitive to corepressor exchange. However, both diagonal (I(A'A')) and direct NOE (I(A'X')) intensities of the bound ligand were not affected much at initial stage. Both peaks were severely influenced by exchange at mixing times of greater than 100 ms. In conclusion, since the NOE intensity is a function of exchange rate, the exchange effect should be considered to properly extract accurate distance information for bound ligand in the presence of conformational exchange.

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NMR Studies of Lipid-Protein Interaction in Apolipoprotein B / Phosphatidylcholine Recombinants

  • Byong-Seok Choi;Cheal O Joe;Ke Won Kang
    • Bulletin of the Korean Chemical Society
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    • 제11권3호
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    • pp.238-240
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    • 1990
  • $^{31}P${$^1H$} nuclear Overhauser effects (NOEs) have been obtained for complexes formed between apolipoprotein B (apo B) and dipalmytoylphosphatidylcholine (DPPC) vesicles. NOE measurements have been conducted with broad-band irradiation of the entire $^1H$ spectrum in order to identify the proton source of the NOE. In a unilamellar vesicle formed spontaneously upon mixing aqueous suspensions of long-chain phospholipid with small amount of short-chain lecithin, the maximum NOE occurs at the N-methyl proton resonance position of the choline moiety. With addition of cholesterol to vesicles, the position of the NOE maximum shifts further away from the choline methyl frequency. For the ternary apo B-vesicle-cholesterol complex, the position of the maximum NOE lies halfway between those in vesicles with and without cholesterol.

$^1H$ NMR and NOE studies of $6{\alpha}-bromopenicillanates$

  • Im, Chaeuk;Yim, Chul-Bu;Bruce-Lix;Ronald-G.Micetich;Mohsen-Daneshtalab
    • Archives of Pharmacal Research
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    • 제18권1호
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    • pp.48-50
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    • 1995
  • The $^1H NMR singls of three 6{\alpha}-bromopenicillanates$ have been assigned and the Nuclear Overthauser Effect(NOE) study of these compounds was undertaken.

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비안와 사골골절의 치료;증례보고 (TREATMENT OF NASO-ORBITO ETHMOIDAL FRACTURE;A CASE REPORT)

  • 김영균;여환호
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제16권1호
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    • pp.72-78
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    • 1994
  • A naso-orbito-ethmoid(NOE) fracture is very complex diagnostically and therapeutically. The diagnosis of this fractures is usually made by physical findings aided by a CT scan. The primary treatment of NOE fracture must be directed toward the reconstruction of medial canthal ligament and bony skeleton. We prefer to correct lacrimal system abnormalities secondarily A 32-year old male patient visited emergency room of our hospital with NOE fracture. After emergency treatment and consultation with neurosurgery and ophthalmology, we treated this patient by performing reconstruction of medial canthal ligament, bone graft of media orbital rim blowout fracture, and dorsal nasal cantilever bone graft with calvarial bone. The authors present a case report with literature review.

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이차원 화학변위 기법을 이용한 간 및 심장 $^{31}P$ 자기공명분광에서의 Nuclear Overhauser 효과에 대한 연구 (The Effect of Nuclear Overhauser Enhancement in Liver and Heart $^{31}P$ NMR Spectra Localized by 2D Chemical Shift Technique)

  • 염헌규;이종민;김용선;이상권;서경진;배성진;장용민
    • Investigative Magnetic Resonance Imaging
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    • 제8권2호
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    • pp.94-99
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    • 2004
  • 목적 : 인체의 심근 및 간조직의 생체내 $^{31}P$ MRS에서 NOE 효과에 의한 분광신호 세기의 증가를 평가하고자 하였으며 또한 동일 장기에서 대사물질에 따른 NOE 효과의 차이를 알아보고자 하였다. 대상 및 방법: 열명의 정상 성인군(남:여=8:2, 연령분포=24-32)을 대상으로 1.5T 자기공명영상/분광 장치에서 $^1H-^{31}P$ 이중 튜닝 표면 코일을 사용하여 생체내 $^{31}P$ MRS를 시행하였다. $^{31}P$ MRS 측정은 이차원 화학변위영상기법을 사용하였으며 동일한 파라미터에서 NOE 효과 없이 그리고 $^1H$ decoupling상태에서 NOE 효과에 의한 $^{31}P$ MRS 데이터를 획득하였다. $^{31}P$ MRS raw data의 postprocessing 후 얻어진 스펙트럼에서 주요 대사물질들의 신호증가를 비교하였다. 결과: 간조직의 $^{31}P$ HRS에서 NOE 효과에 의한 신호증가율은 $\alpha-ATP\;(7\%),\;\beta-ATP\;(9\%),\;\gamma-ATP\;(17\%),\;Pi\;(1\%),\;PDE\;(19\%),\;PME\;(31\%)$였다. 간조직의 경우 크리아틴 키나제가 없기 때문에 PCr 신호는 관찰되지 않았다. 심근의 $^{31}P$ MRS은 whole body 코일이 표면 코일보다 우수한 scout 영상을 제공하여 $^{31}P$ MRS의 localization에 유리하였다. $^{31}P$ 심근 다중 체적 스펙트럼에서 , 혈액의 DPG 신호는 심근으로부터 멀어질 수록 증가하는 양상을 나타내었고 NOE 효과에 의한 신호증가율은 $\alpha-ATP\;(12\%),\;\beta-ATP\;(19\%),\;\gamma-ATP\;(30\%),\;PCr\;(34\%),\;Pi\;(20\%),\;PDE\;(51\%),\;DPG\;(72\%)$ 였다. 결론: 간조직에 비해 심근의 경우 큰 신호증가를 보였고 이는 간조직 대사물질들의 $^{31}P$가 심근과는 다른 $^1H$ coupling을 나타냄을 의미한다고 해석할 수 있다.

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$^1/H-NMR$ and NOE Studies of 2-Cephems and 3-Cephems

  • Im, Chae-Uk;Yim, Chul-Bu;Micetich, Ronald-G.;Mohsen, Daneshtalab
    • Archives of Pharmacal Research
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    • 제20권6호
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    • pp.652-655
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    • 1997
  • $^{1}H-NMR$ signals of 2-cephems and 3-cephems have been assigned and the Nuclear Overhauser Effect (NOE) study of these compounds was undertaken.

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Treatment of a naso-orbito-ethmoid fracture using open reduction and suspension sutures: a case report

  • Youngsu, Na;Chaneol, Seo;Yongseok, Kwon;Jeenam, Kim;Hyungon, Choi;Donghyeok, Shin;Myungchul, Lee
    • 대한두개안면성형외과학회지
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    • 제23권6호
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    • pp.269-273
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    • 2022
  • Naso-orbito-ethmoidal (NOE) fractures are complicated fractures of the mid-face. The treatment of NOE fractures is challenging and a comprehensive treatment strategy is required. We introduce a case of NOE fracture treated with open reduction and suspension sutures. A 28-year-old woman presented with a unilateral NOE fracture. To reduce the frontal process of the maxilla, a suspension suture was made by pulling the fragment using a double arm suture via a transcaruncular incision. The suture thread was placed in the horizontal plane. Another suspension suture on the inferior orbital rim assisted reduction procedure, and they passed through the overlying skin. The reduction alignment could be finely adjusted by tightening the transcutaneous suture threads while checking the degree of bone alignment through the subciliary incision. The two suture threads were suspended using a thermoplastic nasal splint. An additional skin incision on the medial canthal area, which would have resulted in a scar, could be avoided. Four months postoperatively, computed tomography showed an accurate and stable reduction. The patient was satisfied with her aesthetic appearance, and functional deficits were not present.

물벼룩(Daphnia magna)에 대한 중금속의 급성 및 만성 독성 (Acute and Chronic Toxicity of heavy Metals to Daphnia magna)

  • 정재원;차미선;조순자;이상준
    • 한국환경과학회지
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    • 제10권4호
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    • pp.293-298
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    • 2001
  • The toxicity values heavy metals were evaluated by immobilization and chronic reproduction impairment tests, using Daphnia magna. Acute tests were evaluated by the inhibition of their mobilization after 24hrs without food addition. The tests of reproductive impairment were investigated for 21 days by food addition and exchange or water. The effect of each concentration was assessed by Probit analysis and t-test. The results obtained from this study were as follows : 1) The change of pH and DO was not significant in the acute tests, while, in the reproductive tests, pH was increased by 0.3~1.4 and DO also increased. 2) The $E_iC_{50}$ values of immobilization to Daphnia magna in artificial fresh water were $0.030mg/{\ell}(Cu),\;0.054mg/{\ell}(Cd),\;0.12mg/{\ell};(Cr),\;0.74mg/{\ell}(Pb),\;3.4mg/ {\ell}(As)$ and the $NOE_iC$ values were $0.010mg/{\ell}(Cu),\;0.018mg/{\ell}(Cd),\;0.010mg/{\ell}(Cr),\;0.10mg/{\ell}(Pb),\;and\;$1.8mg/{\ell}(As)$. 3) The $E_rC_{50}$ values of reproductive impairment to Daphnia magna were $13.8\mu\textrm{g}/{\ell}(Cu),\;2.9\mu\textrm{g}/{\ell}(Cd),\;15.5\mu\textrm{g}/{\ell}(Cr),\;61.7\mu\textrm{g}/{\ell}(Pb),\;759\mu\textrm{g}/{\ell}(As)$, and $NOE_rC$ values were $0.95\mu\textrm{g}/{\ell}(Cu),\;$0.54\mu\textrm{g}/{\ell}(Cd),\;1.2\mu\textrm{g}/{\ell}(Cd),\;$7.4\mu\textrm{g}/{\ell}(Pb),\;110mu\textrm{g}/{\ell}(As)$. The results of tests using OECD artificial culture water were more sensitive than natural water for culturing. The presented data show that an artificial culture water is suitable in the experiment of bioassay for assessing the toxicity of marterials.

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