• Title/Summary/Keyword: manus

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Tectonic and magmatic development of Bismarck Sea, Papua New Guinea

  • Lee, Sang-Muk
    • 한국지구물리탐사학회:학술대회논문집
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    • 2006.06a
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    • pp.209-210
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    • 2006
  • The Bismarck Sea represent a unique region in the equatorial western Pacific where one can explore the relationship between tectonic and magmatic processes associated with back-arc opening. The sea, located north of Papua New Guinea and just south of the equator, formed during the final stages of a long, complex geological development of the Melanesian Borderland. The development resulted from the Cenozoic convergence between the Australian and Pacific- Caroline Plates and the opening of back-arc basins. At present, the Bismarck Sea straddles two oppositely facing trenches, the inactive Manus trench and the active New Britain trench, and covers two basins, the New Guinea Basin (NGB) to the west and the Manus Basin (MB) to the east. The two basins are separated by the shallow Willaumez-Manus Rise (WMR), which trends roughly from WNW to ESE. The origin of these major structural units and their relationship with the presentday zone of major seismicity along the Bismarck Sea Seismic Lineation (BSSL) remains unclear and is the main focus of our study.

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Asymmetric Topography of Active Young Back-arc Basins and Tectonic Implications (활동적 배호상 해분의 비대칭적 지형과 그들의 구조적 해석)

  • Park, Chung-Hwa
    • Economic and Environmental Geology
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    • v.30 no.6
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    • pp.637-644
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    • 1997
  • Active young back-arc basin such as Mariana, Havre, Lau, Manus, East Scotia basins have asymmetric topography of two types in respect to the spreading axis. The arc-trench wing of Mariana Trough, Lau basin and Havre Trough are shallower toward the active arc, whereas those Manus and East Scotia basins are nearly symmetric to the opposite wings. The other asymmetry which shows the spreading axis deviated from the geographic axis toward the active arc is observed in each basin. Active young back-arc basins show a large variety of asymmetry rates ranging from the lowest East Scotia Basin to the highest Mariana Trough. The asymmetric topography of these young back-arc basins seems to be caused by the rollback rate of downgoing slab under the basin. As the rollback rate increases, the asymmetry rate systematically decreases.

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Geochemistry of the Hydrothermal Chimneys in the Manus Basin, Southwestern Pacific Ocean (남서태평양 Manus Basin에서 산출되는 열수 분출구에 대한 지화학적 연구)

  • 이경용;최상훈;박숭현
    • Economic and Environmental Geology
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    • v.35 no.1
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    • pp.1-12
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    • 2002
  • Manus Basin, located in the equatorial western Pacific, is a back arc basin formed by collision between the IndoAustralian and the Pacific Plates. The basin is host to numerous hydrothermal vent fields and ore deposits. The basement rocks of the Manus Basin consist primarily of dacite and basaltic andesite. Some of the minerals that form the hydrothermal chimneys that were dredged on the Manus basin include pyrite, chalcopyrite, marcasite, sphalerite and galena. The chimneys can be classified into chalcopyrite dominant Cu-rich type and sphalerite dominant Zn-rich type. The concentration of Zn shows good positive correlation with that of Sb, Cd and Ag. The content of Cu, on the other hand, positively correlates with that of Mo, Mn and Co. For samples that were taken from Zn-rich chimney, a strong positive correlation is found between Au and Zn contents. The chimney also shows enrichments of Cd, Mn and Sb. On the other hand, the samples from Cu-rich chimney exhibit strong correlation among Au, Zn and Pb, and are enriched in Mo and Co concentration. Average contents of Au in Cu-rich and Znrich chimneys were 15.9 ppm and 29.0 ppm, respectively. Because of high concentration of Au with Ag and Cu, the ore deposit have high economic potential. Homogenization temperatures and salinities of fluid inclusions in anhydrite and amorphous silica from Zn-rich chimney are estimated to be l74-220$^{\circ}$C and 2.7-3.6 equiv. wt. % NaCI, respectively. These value suggest that ore forming processes were occurred at around 200$^{\circ}$C and that the oxygen fugacity changed from 2: 10$^{-39.5}$bar to -s: 10$^{-40.8}$bar and the sulfur fugacity from -s: 10$^{-14.7}$bar to 10$^{-13.4}$bar during the process. It appears that the temperature at which the ores formed on Cu-rich chimney was higher than that on Zn-rich chimney.

발육기 하악골에 있어 골기질의 조직화학적 관찰

  • Park, Doo-Hwan
    • The Journal of the Korean dental association
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    • v.12 no.5
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    • pp.347-349
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    • 1974
  • The demonstrations of collagenous fiber in mandibul ar bone formation were analized histochemically, using Carson's Mallary-Heidenhein stain, McManus' PAS reaction and H-E stain The stain ablity of osteoid increased with formation of bone tissue. In the surrounding areas of osteoblast and osteocyte were showed slight activity.

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HISTOCHEMICAL PHOSPHORIC ACID REACTION ON AMELOGENESIS OF WHITE RAT APPLIED WITH PYRIDOXINE (Pyridoxine 투여한 백서법랑질형성에 있어 조직화학적 인산반응에 관한 연구)

  • Kim, Young-Sick
    • The Journal of the Korean dental association
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    • v.10 no.4
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    • pp.209-212
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    • 1972
  • The effect of pyridoxine on the incisors were histochemically studied for the purpose of identifying the phosphoric acid. The microscopic observations were carried out by means of phosphoric acid reaction(Serraet Queiroz-Lopes method), mucoprotein reaction (Clara method), periodic acid-Schiff reaction (McManus method), methylen blue stain and hematoxylin-eosin stain. In the experimental result, it was found that phosphoric acid reactions of ameloblast, Tomes' process and preenamel were remarkably increased after pyridoxine administration.

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$\cdot$북 Bismarck plate와 PACMANUS 열수에서의 천부지각 구조

  • 홍종국;이상묵
    • 한국지구물리탐사학회:학술대회논문집
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    • 2004.06a
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    • pp.176-181
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    • 2004
  • ${\cdot}$북 Bismarck 판은 호주판과 태평양 판 사이의 복잡한 판구조를 보이는 지역에 위치한다. 남${\cdot}$북 Bismarck 판 내부에서는 판구조 활동이 활발하게 일어나 지진의 발생빈도가 높고 활성 및 비활성화산이 많이 존재한다. 한국해양연구원은 Bismarck 해의 서부지역과 동 Manus 분지에서 판 경계부의 구조 및 열수구조의 밝히기 위하여 탄성파 탐사를 수행하였다. 탐사결과에 의하면 남${\cdot}$북 Bismarck 판의 경계부에는 주향이동단층대가 발달되어 있으며 이는 판의 경계를 나타내고 있다. PACMANUS 열수하부에는 돔 형태의 구조가 존재하며 이는 마그마 또는 이의 분화과정에서 형성된 지질학적인 구조로 추정된다.

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A literatual studies on the ajangpung(鵝掌風). (鵝掌風에 關한 文獻的 考察)

  • Jang, Gi-young;Roh, Sek-seon
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.11 no.1
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    • pp.141-161
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    • 1998
  • In the literatual studies on the ajangpung(鵝掌風), the results were as follows. Ajangpung(鵝掌風) is called 'Jangsimpung(掌心風)', is concerned with 'Tinea Manus(手癬)' in western medicine. The pathogenic factors of Ajangpung were stomach-heat & blood dryness, wind-cold-wetness evil, or contact infection etc. The treatments of Ajangpung were used external treatments for dispelling wind-evil & cooling blood, dispelling wetness-evil & parasiticidal therapy. In the frequency of prescription, the most numerous prescription was Yibansan(二礬散) and the next were Yungigo(潤肌膏), Gupungjihwanghwan(祛風地黃丸) etc.

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COLONIZATION OF ALKALI-TREATED FIBROUS ROUGHAGES BY ANAEROBIC RUMEN FUNGI

  • Wuliji, T.;McManus, W.R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.1 no.2
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    • pp.65-71
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    • 1988
  • This study reports light and electron microscope examination of rumen fungal colonization of alkali-treated roughage feeds incubated in decron bags in the rumen of cannulated sheep for varying time intervals. Six roughages, pre-treated with ammonium hydroxide or sodium hydroxide at 4% (w/w) level were examined together with untreated control samples. Alkali pre-treatment was associated with an earlier and more pronounced fungal colonization than all control roughages. Sodium hydroxide pre-treatment was significantly more effective than ammonium hydroxide in improving the susceptibility of roughages to rumen fungal colonization and studies by SEM showed that the pre-treatment permitted greater penetration of feeds by fungi. Sodium hydroxide pre-treatment also significantly increased dry matter disappearance from feed held in Dacron bags in the rumen with all feeds except Lucerne stem. It is not known to what extent fungal activity contributed to increased breakdown of the feeds.

A Case of Contact Dermatitis (接觸性 皮膚炎의 治驗 1例)

  • Kim Min-Hi;Yoon So-Won;Yoon Hwa-Jung;Ko Woo-Shin
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.17 no.2
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    • pp.94-98
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    • 2004
  • A female sixty years old visited the Dept. of Oriental Medical Ophthalmology & Otolaryngology & Dermatology Hospital, Dong-eui University with contact dermatitis. she was suffering from the topical itching, empalement, ruler, edema and vesicle etc in skin of the face and two dorsum manus. We treated a patient with only Oriental Medicine.(internal and external use of the herbal medicine and acupuncture) After two weeks or so, the symptom of the skin disease recovered remarkably, we think that this is good case to treat with Oriental Medicine.

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