• 한국해양환경ㆍ에너지학회지
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• 제3권3호
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• pp.13-23
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• 2000

1993년 12원과 1994년 8월 2회에 걸쳐 동중국해 동부해역 관측선 J (30° N)의 용존무기영양염들의 분포에 대해 조사하였다. 고온고염의 특성을 지닌 쿠로시오 표층수의 질산이온 및 규산농도는 각각 2μM 이하와 5μM 이하로 낮다. 반면에 수심이 증가할수록 질산이온 및 규산농도는 급격히 증가하여 쿠로시오 중층수에서는 각각 20～40, 45～100 μM 범위로 높았다. 대륙붕역 저층수와 쿠로시오 중퐁수의 수온과 용존무기영양염 관계는 용존무기영양염이 풍부한 쿠로시오 중층수가 대륙붕수로 관입되고 있음을 암시한다. 수온, 염분 및 규산 농도를 해수추적자로 이용하여 수괴득의 혼합을 분석한 결과, 대륙붕 저층수는 대륙붕단 바로 바깥쪽 수심 약 100～400 m의 쿠로시오 중층수와의 혼합수라는 것이 밝혀졌다. 이와같이 대륙붕단을 따라 대륙사면에서 대륙붕안으로 올라오는 높은 용존무기영양염 농도를 지닌 용승해수는 동중국해 대륙붕역의 식물플랑크톤 일차생산력을 증가시키는 중요한 영양염 공급원으로 사료된다.

• 천문학회지
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• 제31권1호
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• pp.39-50
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• 1998

We present UBV CCD photometry of Be 2, previously unstudied open cluster. Our photometry covers a field of $3'.2\times3'.8$ of the sky centered on the cluster, which is slightly smaller than the cluster diameter estimated to be about 260'. We have determined the reddening, distance, age and metallicity of the cluster by fitting the Pad ova isochrones to the observed stellar distributions in color-magnitude diagram as well as main sequence fitting: $E(B-V)=0.8\pm0.05,\;(m-M)_o=13.6\pm0.1,\;log(t) =8.9\pm0.1$, and Z=0.008. The present photometry shows that Be 2 is a distant open cluster of intermediate age. that it is a distant intermediate-age open duster.

• Ocean and Polar Research
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• 제27권2호
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• pp.183-188
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• 2005

Using data from Argo floats collected in the Southern Ocean, we describe water mass prop erties and flow fields at intermediate levels (1000m and 2000m levels). Water mass properties from Argo floats, which are consistent with those from previous hydrographic surveys, reflect the movement of the floats well even without quality control on the Argo data. Since the flow fields from the Argo floats do not cover the entire Southern Ocean, we could not obtain a general circulation pattern, especially at the 2000m level. We, however, can confirm the general eastward tendency due to ACC largely following the topography.

• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2003년도 학술대회 논문집
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• pp.85-87
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• 2003

Intermediate annealing was carried out during wire drawing for uniform deformation of 500 m class Bi-2223/Ag HTS tapes. Wire drawing force was measured to evaluate the uniformity of wire deformation along the length. To prevent sausage and filament breakage of wire, drawing stress was controlled below 200 MPa by using intermediate annealing process. Thickness and width of the rolled tapes was measured 0.23 mm and 4.1 mm with low deviation $\pm$ 0.08 mm and $\pm$ 0.09 mm, respectively. The critical current of the 500 m tapes was measured 33.7 A $\pm$ 3.7 A by continuous critical current measurement system.

• 천문학회지
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• 제29권2호
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• pp.269-278
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• 1996

We present the color-magnitude diagrams (CMD) of more than 24,000 stars in the field of an intermediate age open cluster M11, based on wide field CCD imaging. The morphology of the CMDs varies strikingly as the distance from the center of the cluster increases. From the surface number density analysis, we confirm the mass segregation effect in this cluster: the bright, massive stars are centrally more concetrated than the faint, low mass stars. The slope of the field-corrected surface density with respect to magnitude progressively increases as the radius increases, up to r = 5'. Most of the field stars in or near the cluster main sequence band and in the bright part of the red stars in the CMDs appear to be nearly at the same distance as M11, and they are considered to be the major component of disk stars in the Sagittarius-Carina arm.

• 천문학회보
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• 제40권2호
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• pp.33.1-33.1
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• 2015

M85 is a nearby merger remnant galaxy located at the northern part of the Virgo Cluster. Because of its remarkable merging features, it is an interesting object to investigate its formation history. Globular clusters are a great tracer of the formation history of early-type galaxies, so that we study the globular cluster system of M85. It has been already found that there are "intermediate-color" globular clusters as well as blue and red ones based on the photometric survey using CFHT/Megacam. For follow-up research, we obtain the spectra of 21 globular clusters in the central region of M85 using Gemini-N/GMOS. We estimate their ages and metallicities based on the strength of Lick indices. We detect the intermediate-age population (~ 2 Gyr) with solar metallicities, comprising about 50% of the observed globular clusters, as well as old and metal-poor population. It suggests that M85 experienced a major merging event around 2 Gyr ago. We discuss these results regarding to the formation history of M85.

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1115-1118
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• 2016

Background: There is controversy about ablation efficacy of low or high doses of radioiodine-131 (RAI) in patients with differentiated thyroid cancers (DTC). The purpose of this prospective study was to determine efficacy of 30 mCi and 100 mCi of RAI to achieve successful ablation in patients with low to intermediate risk DTC. Materials and Methods: This prospective cross sectional study was conducted from April 2013 to November 2015. Inclusion criteria were patients of either gender, 18 years or older, having low to intermediate risk papillary and follicular thyroid cancers with T1-3, N0/N1/Nx but no evidence of distant metastasis. Thirty-nine patients were administered 30 mCi of RAI while 61 patients were given 100 mCi. Informed consent was acquired from all patients and counseling was done by nuclear physicians regarding benefits and possible side effects of RAI. After an average of 6 months (range 6-16 months; 2-3 weeks after thyroxin withdrawal), these patients were followed up for stimulated TSH, thyroglobulin (sTg) and thyroglobulin antibodies, ultrasound neck (U/S) and a diagnostic whole body iodine scan (WBIS) for ablation outcome. Successful ablation was concluded with stimulated Tg< 2ng/ml with negative antibodies, negative U/S and a negative diagnostic WBIS (triple negative criteria). ROC curve analysis was used to find diagnostic strength of baseline sTg to predict successful ablation. Results: Successful ablation based upon triple negative criteria was 56% in the low dose and 57% in the high dose group (non-significant difference). Based on a single criterion (follow-up sTg<2 ng/ml), values were 82% and 77% (again non-significant). The ROC curve revealed that a baseline sTg level ${\leq}7.4ng/ml$ had the highest diagnostic strength to predict successful ablation in all patients. Conclusions: We conclude that 30 mCi of RAI has similar ablation success to 100 mCi dose in patients with low to intermediate risk DTC. A baseline $sTg{\leq}7.4ng/ml$ is a strong predictor of successful ablation in all patients. Low dose RAI is safer, more cost effective and more convenient for patients and healthcare providers.

• 한국식품과학회지
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• 제20권3호
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• pp.363-370
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• 1988

패류의 효율적인 이용에 관한 기초자료를 얻고자 굴 및 홍합을 이용한 조미가공품을 제조하고, 아울러 몇가지 포장지를 선택하여 가공제품을 포장한 후 저장하면서 품질 안정성 시험을 실시하였다. 탈각한 굴 및 홍합을 10%염수로써 오물을 제거하고 수세하여 가장에 5분간 끓여서 탈수 및 살균조작을 한다음 조미액을 가하여 다시 10분간 끓인 후 열풍$(40^{\circ}C)$건조하여 제품으로 하였을 때 기호성이 있고 조직이 유연한 instant제품을 얻을 수 있었다. 적정조미액 조성은 MSG 2%, salt 3.5%, sorbitol 15%, propylene glycol 2%, glycine 5%, resemary oleoresin 0.02%, 물 72.48%였다. PE film 으로 함기포장(A), Nylon/PE film 으로 진공포장(B) 및 polyester/viniliden chloride/polypropylene으로 진공포장(C)에 각각 가공제품을 넣어 $30^{\circ}C$에 저장시 C처리구는 저장 60일 후에도 품질변화가 거의 없었으나 A처리구는 저장초기에 비하여 품질이 매우 저하되었다.

• 한국환경과학회지
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• 제20권11호
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• pp.1447-1455
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• 2011

The purpose of this study was to analyze physicochmical characteristics of oil within planting base of Incheon coastal reclamation cities where 10 years have passed since reclamation, and to provide basic data to promote growth and development of plants by conducting evaluation based on the planting degree standard. Study targets were Cheongra, Sondo, and Yeongjong districts within Incheon Free Economic Zone, the coastal reclamation city. The analysis results of average soil characteristics of 3 districts. Soil acidity(pH) was shown in orders of Cheongra district(8.85) > Songdo district(8.70) > Yeongjong district(7.97) and electric conductivity(EC) was shown in orders of Cheongra district(4.80 dS/m) > Songdo district(1.30dS/m) > and Yeongjong district(0.07 dS/m). Organic matter content(OMC) was shown in orders of Cheongra district(5.72%) > Songdo district(2.60%) > Yeongjong district(0.59%) and available phosphate was shown in orders of Cheongra district(70.70 mg/kg) > Songdo district(23.07 mg/kg) > Yeongjong district(2.49 mg/kg). $K^+$ was shown in orders of Songdo district(0.84 cmol/kg) > Cheongra district(0.74 cmol/kg) > Yeongjong district(0.22 cmol/kg), $Ca^{++}$ was shown in orders of Cheongra district(22.08 cmol/kg) > Songdo district(9.87 cmol/kg) > Yeongjong district(4.04 cmol/kg), and $Mg^{++}$ was shown in orders of Cheongra district(1.98 cmol/kg) > Songdo district(1.22 cmol/kg) > Yeongjong district(1.12 cmol/kg). Planting base level of coastal reclaimed land can be applied with above intermediate level, soil acidity and available phosphate were all more than intermediate in 3 districts, and electric conductivity was low level in Cheongra district and more than intermediate level in Songdo and Yeongjong districts. Organic matters content was more than intermediate level in Cheongra district and low level in Songdo and Yeongjong district. $K^+$ among exchangeable ions was intermediate level in Cheongra and Songdo districut and low in Yeongjong district. $Ca^{++}$ and $Mg^{++}$ both were more than imtermidiate levels in 3 districts.

• 천문학회보
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• 제39권1호
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• pp.42.2-42.2
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• 2014

We present high-resolution optical spectra of newly selected candidates of intermediate-mass black holes. The sample was selected based on the variability and spectral shape in X-ray. The spectra was taken with Magellan 6.5 m Clay Telescope and cover the rest-frame region 3500-10000A. The high spectral resolution (R~4000) of the spectrum allows us to estimate BH masses of the sources. Interestingly, the majority of the sample appears to have broad emission lines. Using this dataset, we will estimate the BH masses and Eddington ratio in order to understand their physical properties.