• Journal of Conservation Science
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• v.33 no.6
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• pp.533-539
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• 2017

Stable carbon and nitrogen isotope results recorded in human bone reflects palaeodiet, nutrition, subsistence and palaeoenvironment. We analyzed the remains of the Naju Yeongdong-ri people, who live at around $6^{th}$ century, excavated from stone chambers and stone-lined tombs. The following results of the analysis of stable carbon and nitrogen isotopes were obtained: ${\delta}^{13}C=-19.5{\pm}0.7$‰, ${\delta}^{15}N=9.6{\pm}0.7$‰, (n=9). The value for stable carbon isotopes indicates that the Naju Yeongdong-ri people had a largely $C_3$-based diet such as rice, barley, and beans. On the other hand, the value for stable nitrogen isotopes reflect the consumption of terrestrial animal protein. This study presents new information on the dietary patterns of the Naju Yeongdong-ri people, whose tombs were similar to the Baekje tomb style and their burial type was much like the one followed by the indigenous people of the Yeongsan river basin.

• The Journal of Engineering Geology
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• v.32 no.4
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• pp.559-569
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• 2022

This study investigated the acidification and mixing with seawater of groundwater, stream water, and reservoir water in the Hunghae area of Pohang City, as well as the source of water expelled to the stream by liquefaction induced by the Pohang earthquake on 15 November 2017. Geologically, the area consists of Tertiary sedimentary rocks. We collected six samples of groundwater, five of reservoir water, four of stream water, two of liquefaction water, and one of seawater to analyze the chemical composition and stable isotopes (𝛿D and 𝛿¹⁸O). Gogkang Stream flows eastward through the central part of the study area into the East Sea. The groundwater and reservoir water in the lower part of the stream are acidic (pH < 4), have a Ca(Mg)-SO₄ composition, and high concentrations of Al, Fe, and Mn, likely due to the oxidation of pyrite in Tertiary rocks. The groundwater in the upper part of the stream have a Ca(Na)-HCO₃(Cl) composition, indicating the mixing of seawater with the stream water. The 𝛿D and 𝛿¹⁸O isotope data indicate the isotopic enrichment of reservoir water by evaporation. Based on the chemical and isotopic data, it is inferred that the two samples of liquefaction water originated from alluvium water in a transition zone with stream water, and from deep and shallow groundwaters that has been infiltrated by seawater, respectively.

• Journal of the Korean Applied Science and Technology
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• v.29 no.1
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• pp.116-121
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• 2012

In this paper, yellow coupler was prepared by the reaction of ${\alpha}$-pivaloyl- 2-chloro-5-aminoacetaniline hydrogen chloride with 1-hexadecane sulfonyl chloride in the presence of pyridine. The product was identified by using various analytical tools such as melting poin elemental analyzer, IR spectrophotometer, UV-Vis spectrophotometer, mass spectrometer. The reaction of yellow coupler with CD-3(color development agent) was shown yellow color.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.6
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• pp.949-954
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• 2012

This study is conducted to evaluate the effects of chelating agents for improving plant growth and reusing accumulated nutrients in soils of plastic film house. Two experiments were carried out at follows: i) The incubation test was conducted using soils treated with 0, 300 mM of EDTA and DTPA to examine the availability of nutrients. ii) For the pot test, chinese cabbages were cultivated in soils with 0, 0.1, 0.5, 1, and 5 mM of EDTA and DTPA to examine the impacts of plant growth response. The application of chelating agents increased ther availability of soil nutrients in the following order: DTPA > EDTA > control. Inorganic concentration of chinese cabbages in DTPA treatments consderably increased in nitrogen, phosphate, iron and aluminium contents than that of the other treatments. The optimal concentration of DTPA for vigorous plant growth as 0.5 mM. Thus, DTPA was more effective than other chelating agents for healty growth of cabbages and the availability of nutrients accumulated in plastic film house.

• Journal of the Korea Fashion and Costume Design Association
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• v.8 no.2
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• pp.37-45
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• 2006

Jean Paul Gaultier, debuted in 1970's and referred to as a bad boy in Paris fashion industry with his abnormal and ingenious ideas such as skirts for men, underwear outfit, etc, is a leading fashion designer. This study nay find its meaning from the fact that this study defines how the voluptuous beauty, one of the figurative beauties inherent in Jean Paul Gaultier's design, expresses in the movie costume and understands the world of the designer's fashion to provide a foundation to fashion designers who are looking for a new area where they can actively involve in. For the study, the 'The Fifth Element (1997)', in which the voluptuous beauty, Jean Paul Gaultier's representative figurative beauty, is fully revealed, and also it is his latest movie he participated in as costume designer, was selected and costume design is analyzed using DVD screen capture program. Also, this study reviewed his design with his collections from 1997 when he was invited to Haute Couture and began to actively perform his works down to date and also referred to numerous materials, fashion magazines, movie magazines, Internet data and etc. From the results of analyzing Jean Paul Gaultier collections, firs, the beauty he is pursuing is projected broadly in three types- the voluptuous beauty from clothing innovation, the voluptuous beauty from unpolished nature, the voluptuous beauty from exposure. Second, the movie ${\ulcorner}$The Fifth Element${\lrcorner}$ is well revealed the world of Jean Paul Gaultier's art presenting visual amusement and variety of attractions. Finally, the results of analyzing costume by characters say that the clothing innovation and the voluptuous beauty from exposure on Leeloo's costume, the voluptuous beauty from exposure on Korben Dallas's costume, the voluptuous beauty from unpolished nature on Zorg and Ruby Rhod's costumes are well shown respectively.

• Nuclear industry
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• v.26 no.6 s.280
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• pp.91-98
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• 2006

방폐장 처분 방식 평가 항복 기준 등 결정/ 한국-인도네시아 원자력협정 가서명/ KEDO 경수로 사업10년 6개월 만에 공식 종료/ 고리1호기 최근 10년 동안 6번 무고장 운전 달성/ 알제리 원자력위원장 방한/ 원전 기관 업체, 해외 공동 진출 적극 협력키로/ 원자력 통제제도 종합 개산 계획 수립 및 추진/ 국제핵융합실헙로(ITER)프로젝트 본격 착수/ 2006 방사선 및 방사성동위원소 이용진흥 연차대회 개최/ 원전 방폐장 정보 교환/ 중성자 유도관 국산화/ 중국 원전사업자단 방문/ 제5기 「원자력대학생 논문연구회」출범/ 윤맹현 한전 원자력연료(주) 신임 사장 취임/ KAIST 조남진 교수/ 서울대 김창효 교수, KAIST 장순흥 교수

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1976.04a
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• pp.182.5-183
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• 1976

Mucor-rennin(MR)과 Calf-rennin(CR)을 k-Ca-sein에 반응시켜 para-k-Casein과 macropeptide를 분리하였다. 분리한 Para-k-casein과 macropeptide에 대한 전기영동, 원소분석을 행하였다. MR로 분해하여 얻은 para-k-casein의 N-미단은 없고, Cpase를 반응시켰을 때 Paper chromatography 상에서 Phe, Leu를 확인할 수 있었다. Macropeptide의 N미단은 Edman법에 의하여 Met으로 확인되였다. 이 결과로부터 CR은 para-k-casein의 C미단 Phe과 macropeptide의 N미단 Met간의 결합 즉 Phe-Met결합을 가수분해한다고 생각할 수 있다. 그리고 CR을 k-casein에 작용시켜 얻은 기질특이성은 MR의 결과와 같았다.

• 한국신재생에너지학회:학술대회논문집
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• 2006.06a
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• pp.373-376
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• 2006

본 연구의 목적은 동해 울릉분지의 제4기 후기 퇴적물 내의 유기물, 공극수와 메탄의 특징 및 상호작용을 규명하는데 있다. 연구지역에서 채취한 코어퇴적물을 원소 분석한 결과 C/N 및 C/S 비(wt. %)는 퇴적물 내 유기물이 주로 해양조류 기원을 가지고, 일반적인 해양 또는 정체 환경에서 퇴적되어Tdam을 지시한다. 그러나 Rock-Eval 열분석 결과는 유기물 기원이 육상식물(Type III)이고, 열적 성숙단계가 미성숙단계임을 보여준다. 이러한 원소분석과 열분석간의 상반된 결과는 유기물이 침강하는 동안 또는 퇴적 후 이루어진 강한 산화작용에 기인한 것으로 추정된다. 퇴적물 내 공극수의 황산염 농도가 퇴적물의 심도가 증가할수록 감소하며, 감소하는 경향은 크게 두 가지 (적선성, concave down)로 나누어진다. 이는 모든 코어에서 황산엽 환원작용이 일어나고 있음을 지시한다. 또한 직선선의 황산엽농도 구배는 무산소 메탄 산화작용(AMO)의 전형적인 특징이다. 황산염 농도의 수직적 구배를 이용하여 SMI(sulfate-methane interface) 심도를 계산하면, 남부울릉분지의 코어 (03GHP-01, 03GHP-02; <3.5mbsf)가 북부울릉분지 코어(01GHP-05, 01GHP-07, 03GHP-03, 03GHP-04, 03GHP-05; > 6mbsf)보다 낮은 값을 갖는다. 위와 같은 SMI 심도차는 메탄의 상부 분산량과 밀접한 관련있는 것으로 추정된다. 메탄가스의 탄소 안정동위원소 $({\delta}^{13}C)$ 분석값들은 -83.5%o에서 -69.5%o의 범위를 가지고 있고, 이산화탄소 환원작용($CO)_2$ reduction)에 의한 생물 (biogenic) 기원임을 지시한다.

• Korean Journal of Materials Research
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• v.10 no.8
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• pp.569-574
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• 2000

To improve the ductility of $Al_3Hf$ and $Al_3Ta$ intermetallic compounds, which are the potential temperature structural materials, the mechanical alloying behaviour and the effect of ternary additions on the $Ll_2$ phase formation were investigated. During the mechanical alloying by the SPEX mill, the $Ll_2$ $Al_3Hf$ intermetallic compound was formed after 6 hours of milling in AL-25%Hf system. In AL-25%Ta system, however, only the $D0_{22}$ $Al_3Ta$ intermetallic compound was formed until 30 hours of milling and the $Ll_2$ phase was not observed. In AL-12.5%M-25%Ta(M=Cu, Zn, Mn, Fe, Ni) systems, the additions of Cu and Zn had no effect on the $D0_{22}$ structure of the binary $Al_3Hf$ and the additions of Mn, Fe and Ni produced the amorphous phase. Therefore it was considered that these ternary additions could not overcome the energy difference between $Ll_2$ and $D0_{22}$ structures in the $Al_3Hf$ intermetallic compound. In AL-12.5%M-25%Hf(M=Cu, Zn, Mn, Fe, Ni)systems, the additions of Cu and Zn did not affect the $Ll_2$ structure of the binary $Al_3Hf$ but the additions of oMn, Fe and Ni produced the amorphous phase as they did in AL-12.5%M-25%Ta systems. Therefore, it was considered that the Ni, Mn and Fe additions promote the formation of amorphous phase in $Al_3X$ intermetallic compounds.

• Journal of the Korean Chemical Society
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• v.40 no.7
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• pp.492-500
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• 1996

The solvent extraction of trace Bi, Cd and In in seawater samples using ammonium pyrrolidine dithiocarbamate(APDC) as a complexing agent was studied. The pH of sample solution, the amount of APDC, the type of solvent and the shaking time were investigated together with back-extraction conditions. After the pH of 200 mL seawater was adjusted to 4.0 and 5.0 mL of 1% APDC was added, analytes were extracted with 10.0 mL of MIBK by shaking for 35 minutes. The organic phase seperated was washed with a 0.05 M NaOH 10.0 mL to remove HPDC. The analytes were stripped by the back-extraction of 5 minute shaking with 5 mL of 4 M HNO3 containing 150 ㎍/mL Pd(Ⅱ). Detection limits of Bi, Cd and In were 0.038, 0.0057 and 0.023 ng/mL, respectively. Both of Bi(Ⅲ) and In(Ⅲ) were not detected in two kinds of water samples of the East Sea and the contents of Cd(Ⅱ) were 0.018 and 0.016 ng/mL. The recoveries of over 90% showed that this procedure was applicable to the determination of such trace elements in seawater samples.