• Title/Summary/Keyword: 3MS

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Analysis of Hydrocarbon Trap in the Southwestern Margin of the Ulleung Basin, East Sea (동해 울릉분지 남서주변부의 탄화수소 트랩 분석)

  • Lee, Minwoo;Kang, Moo-Hee;Yoon, Youngho;Yi, Bo-Yeon;Kim, Kyong-O;Kim, Jinho;Park, Myong-ho;Lee, Keumsuk
    • Economic and Environmental Geology
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    • v.48 no.4
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    • pp.301-312
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    • 2015
  • A commercial gas field was found in the southwestern continental shelf of the Ulleung Basin, East Sea in the late 1990s. To develop additional gas field, an exploration well was drilled through the coarse infill of submarine canyon near the gas field, but it was uneconomic to develop hydrocarbons. Using newly acquired deep seismic reflection and previous well data, we have identified additional geological structure which has hydrocarbon potentials below submarine canyons in the southwestern margin of the basin. Based on the interpretation of the deep seismic reflection and well data, the sequences of the study area can be classified into the syn-rift megasequence(MS1), post-rift megasequence(MS2), syn-compressional megasequence(MS3), and post-compressional megasequence(MS4) in relation to the tectonic events. MS1, deposited simultaneously with the basin formation before the middle Miocene, is characterized by chaotic seismic facies with low- to moderate-amplitude and low frequency reflections. MS2 comprises laterally continuous, low- to moderate-amplitude reflections, showing progradational stacking patterns due to high rates of sediment supply during basin expansion in the middle Miocene. MS3 is mainly composed of continuous reflections with high amplitude and moderate- to high-frequency which are interpreted as coarse-grained sediments. The coarse-grained sediments of MS3 sequence is widely truncated by several submarine canyons which filled with fine-grained sediment of MS4 to form a stratigraphic trap of hydrocarbon. Therefore, the reservoir and seal of the hydrocarbon trap in the study area are coarse-grained sediment of MS3 and submarine canyon filled with fine-grained sediment of MS4, respectively. A flat-spot seismic anomaly, which may indicate the presence of hydrocarbon, is observed within the stratigraphic trap.

Eye-movements in reading easy and difficult texts (난이도가 다른 덩이글 읽기에서의 안구운동 양상)

  • Yoon, Nak-Yeong;Koh, Sung-Ryong
    • Korean Journal of Cognitive Science
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    • v.20 no.3
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    • pp.291-307
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    • 2009
  • This study investigated global and local characteristics of eye movement while 30 college students read easy and difficult Korean texts. It was found that readers who read the difficult text fixated longer for about 217ms and made shorter saccades of about 3.7 characters while readers who read the easy one fixated for about 190ms and made saccades of about 4.8 characters. Single fixation times and gaze durations in the difficult text were longer than those in the easy one(227ms vs. 195ms; 266ms vs. 210ms). In both easy and difficult texts, the effects of word frequency and eojeol length were found. In addition, the differences in fixation times according to word frequency and length were larger in the difficult text.

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Co-registration Between PAN and MS Bands Using Sensor Modeling and Image Matching (센서모델링과 영상매칭을 통한 PAN과 MS 밴드간 상호좌표등록)

  • Lee, Chang No;Oh, Jae Hong
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.39 no.1
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    • pp.13-21
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    • 2021
  • High-resolution satellites such as Kompsat-3 and CAS-500 include optical cameras of MS (Multispectral) and PAN (Panchromatic) CCD (Charge Coupled Device) sensors installed with certain offsets. The offsets between the CCD sensors produce geometric discrepancy between MS and PAN images because a ground target is imaged at slightly different times for MS and PAN sensors. For precise pan-sharpening process, we propose a co-registration process consisting the physical sensor modeling and image matching. The physical sensor model enables the initial co-registration and the image matching is carried out for further refinement. An experiment with Kompsat-3 images produced RMSE (Root Mean Square Error) 0.2pixels level of geometric discrepancy between MS and PAN images.

Induction of Hariy Root and Bioreactor Culture of Lycium chinense (구기자나무 (Lycium chinense)의 모상근 유도 및 생물반응기 배양)

  • Bae, Ki-Hwa;Kim, Yun-Soo;Jeong, Jae-Hun;Kim, Young-Seon;Choi, Yong-Eui;Yoon, Eui-Soo
    • Journal of Plant Biotechnology
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    • v.31 no.4
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    • pp.295-300
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    • 2004
  • This article was conducted to induce the transgenic hairy roots and determine the effect of culture conditions on optimum growth of hairy roots by Agrobacterium rhizogenes strain, 15834 in Lycium chinense Miller. Hairy roots of L. chinense Miller. were induced from leaf segments by co-cultivation with A. rhizogenes. When the hairy roots were cultured in various MS medium strength and sucrose concentrations, the highest growth of hairy roots was observed in half-strength MS media supplemented with 3% sucrose, respectively. In air lift bioreactor cultures, the liquid medium contained with 1/2 MS and 3% sucrose was also the best for optimum growth of hairy roots.

A Study on the Fabrication Process and Magnetic Properties of Buble Magnetic Materials. (버블자성재료의 제조 및 자기 특성에 관한 연구)

  • Park, Yong-Du;Kim, Jong-O
    • Korean Journal of Materials Research
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    • v.5 no.8
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    • pp.1040-1044
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    • 1995
  • Magnetic garnet films of (YSmLuCa)$_3$(FeGe)$\_$5/O$\_$12/ have been grown by the liquid phase eqitaxy method on the substrate of non-magnetic garnet Gd$_3$Ga$\_$5/O$\_$12/. The variation of Sm ion concentration were varied 0.3, 0.4, 0.6, mole/formula unit respectively. The magnetic properties of the samples for the bubble magnetic materials, such as, line width ΔH of ferromagnetic resonance (FMR), magnetic saturation induction 4$\pi$Ms, wall mobility u$\_$w/ uniaxial magnetic anisotropy energy Ku, were measured and discussed the relations between these properties. The line width ΔH decreases with increasing 4$\pi$Ms, and with decreasing Sm concentration. The anisotropy energy Ku increases not only with increasing Sm ion concentration, but also increasing 4$\pi$Ms. The value of wall mobility u$\_$w/ increase with increasing 4$\pi$Ms and decreases with increasing Sm concentration. We define a physical constant Eι from the fact that the product of 4$\pi$Ms and ΔH is constant with dimension of energy density. The Eι is dependent only on Sm concentration.density. The Eι is dependent only on Sm concentration.

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Maternal 3-methylcrotonyl-coenzyme A carboxylase deficiency with elevated 3-hydroxyisovalerylcarnitine in breast milk

  • Cho, Kyung Lae;Kim, Yeo Jin;Yang, Song Hyun;Kim, Gu-Hwan;Lee, Jun Hwa
    • Clinical and Experimental Pediatrics
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    • v.59 no.sup1
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    • pp.41-44
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    • 2016
  • We report here a case of maternal 3-methylcrotonyl-coenzyme A carboxylase (3-MCC) deficiency in a Korean woman. Her 2 infants had elevated 3-hydroxyisovalerylcarnitine (C5-OH) on a neonatal screening test by liquid chromatography-tandem mass spectrometry (LC-MS/MS), but normal results were found on urine organic acid analysis. The patient was subjected to serial testing and we confirmed a maternal 3-MCC deficiency by blood spot and breast milk spot test by LC-MS/MS, serum amino acid analysis, urine organic acid and molecular genetic analysis that found c.838G>T (p.Asp280Tyr) homozygous mutation within exon 9 of the MCCB gene. Especially, we confirmed marked higher levels of C5-OH on breast milk spot by LC-MS/MS, in the case of maternal 3-MCC deficiency vs. controls.

Micropropagation of Heloniopsis orientalis (Thunb.) C. Tanska in vitro (조직배양을 이용한 처녀치마[Heloniopsis orientalis (Thunb) C. Tanaka] 대량 증식)

  • 윤세영;이명선;임상철;신중두
    • Korean Journal of Plant Tissue Culture
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    • v.27 no.3
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    • pp.197-202
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    • 2000
  • The effect of cultural media and growth regulators on multiple plant regeneration from leaf explants of Heloniopsis orientalis (Thunb.) Tanaka was evaluated. The highest percentage of shoot and root formation were 20 and 30% on MS medium treated at 3.0 mg $l^{-1}$ of zeatin, respectively. Also 67 and 33% of high shoot formation appeared on 1/2 MS and 5 culture medium treated at zeatin 1.0 and 3.0 mg $l^{-1}$ respectively. With MS treated at 0.5 mg $l^{-1}$ of 2,4-D 1/2 MS and B5 culture media treated at each 1.0 and 3.0 mg $l^{-1}$ of zeatin the highest ratios of plant produced were 100, 280 and 310 % respectively relative to the other treatments. Generally, there was highest possibility for multiple propagation of Heloniopsis orientalis (Thunb.) C. Tanaka with B5 culture media supplemented 3.0 mg $l^{-1}$ of zeatin.

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Uncertainty evaluation for the determination of creatinine in urine by LC-MS/MS (LC-MS/MS를 이용한 소변 중 크레아티닌 분석의 측정불확도 평가)

  • Kim, Jin-Young;Kwon, Woon-Yong;Suh, Sung-Ill;In, Moon-Kyo
    • Analytical Science and Technology
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    • v.25 no.1
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    • pp.83-90
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    • 2012
  • The objective of the study was to estimate the measurement uncertainty associated with determination of creatinine (Cr) in urine samples by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Centrifuged urine samples (10 ${\mu}L$) were diluted with 390 ${\mu}L$ of distilled water. To 20 ${\mu}L$ aliquots of diluted urine samples, 30 ${\mu}L$ of internal standard solution (Cr-$d_3$, 5 ${\mu}g/mL$) and 10 ${\mu}L$ of acetonitrile were added and filtered. The samples (1 ${\mu}L$) were introduced into LC-MS/MS with no further pretreatment. Cr was separated on a multi-mode ODS column (Scherzo SM-C18, 75 ${\times}$ 2.0 mm I.D., 3 ${\mu}m$) and quantified by LC-MS/MS operating in MRM mode (Cr, m/z 114.0${\rightarrow}$ 86.0; Cr-$d_3$, m/z 117.0${\rightarrow}$ 89.1). The four factors that contribute uncertainty to the final result were extracted and evaluated. The principal factors of contribution to combined standard uncertainty were sample dilution, calibration curve and repeatability, while the preparation of standard solution was only a minor factor. Relative extended uncertainty of the measured concentration was 14.2% in a real urine sample.

Appropriate in Vitro Culture Conditions of Growing Medium for New Ever-bearing Strawberry 'Goha' (사계성 신품종 딸기 '고하'의 기내배양을 위한 배지의 적정 조건)

  • Lee, Jong-Nam;Kim, Hye-Jin;Kim, Ki-Deog;Kwon, Young-Seok;Im, Ju-Sung;Yeoung, Young-Rok;Lim, Hak-Tae
    • Horticultural Science & Technology
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    • v.28 no.6
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    • pp.1051-1056
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    • 2010
  • This study was carried out to determine suitable in vitro culture conditions of new ever-bearing strawberry ($Fragaria$ $ananassa$ Duch.), 'Goha'. Four-week old plantlets which were derived from the meristem culture were used in this study. Three different culture media including MS, Gamborg B5 and White medium were used for the plant culture and the medium concentrations were at the 5 levels of $1/3{\times}$, $1/2{\times}$, $1{\times}$, $2{\times}$ and $3{\times}$. Sucrose content ranged at four levels of 1, 3, 5 and 8% (w/v). Crown diameter on the MS medium was thicker (2.1 mm) than in other media. Fresh weight on the MS medium was 482 mg, which was heavier than 88 mg or 260 mg of Gamborg B5 or White medium, respectively. Particularly, 1/2MS medium was found to have higher growth rate than these in other treatments (fresh weight, dry weight and D/F rate). Shoot length in the treatment of 1% sucrose concentration was 3.6 cm which was the longest. Shoot length was in inverse proportion to the increasing concentration of sucrose. Fresh weight was increased up to 3% sucrose concentration, but decreased above 5% sucrose concentration. From the results, we found that the best condition for in vitro culture of new ever-bearing strawberry 'Goha' was 1/2MS medium supplemented with 1% sucrose concentration.

Screening Analysis of 10 Adrenal Steroids by Matrix-Assisted Laser Desorption Ionization-Tandem Mass Spectrometry

  • Kim, Sun-Ju;Jung, Hyun-Jin;Chung, Bong-Chul;Choi, Man-Ho
    • Mass Spectrometry Letters
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    • v.2 no.3
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    • pp.69-72
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    • 2011
  • Defective synthesis of the steroid hormones by the adrenal cortex has profound effects on human development and homeostasis. Due to the time-consuming chromatography procedure combined with mass spectrometry, the matrix-assisted laser desorption ionization method coupled to the linear ion-trap tandem mass spectrometry (MALDI-LTQ-MS/MS) was developed for quantitative analysis of 10 adrenal steroids in human serum. Although MALDI-MS can be introduced for its applicability as a high-throughput screening method, it has a limitation on reproducibility within and between samples, which renders poor reproducibility for quantification. For quantitative MALDI-MS/MS analysis, the stable-isotope labeled internal standards were used and the conditions of crystallization were tested. The precision and accuracy were 3.1~35.5% and 83.8~138.5%, respectively, when a mixture of 10 mg/mL ${\alpha}$-cyano-4-hydroxycinnamic acid in 0.2% TFA of 70% acetonitrile was used as the MALDI matrix. The limit of quantification ranged from 5 to 340 ng/mL, and the linearity as a correlation coefficient was higher than 0.988 for all analytes in the calibration range. Clinical applications include quantitative analyses of patients with congenital adrenal hyperplasia. The devised MALDI-MS/MS technique could be successfully applied to diagnosis of clinical samples.