• 제목/요약/키워드: First orders

검색결과 405건 처리시간 0.023초

캠퍼스 지하공간 개발전략 연구 - 국내 주요대학 캠퍼스 분석을 중심으로 - (A Study on Strategy to Develop Underground Space of Campus - Focused on the Analyses of the Campuses of Main Universities Nationwide -)

  • 박훈
    • 교육시설 논문지
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    • 제19권6호
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    • pp.3-14
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    • 2012
  • University campus has grown and developed along with history of human in connection with transition characteristics of city. In particular, reflecting the features in the times, the masterplan should explore its main roles today when international growth of university is pursued. In particular, center core and quad space, focusing on main components of campus such as main building, student union hall and main lecture facility, are the prototype of campus components and have been pursued to have importance in terms of shape and function as traditional campus space strategy. Recently, however, new strategy has been proposed to explore orders of campus utilizing the underground space focusing on main universities. Design of Hana Plaza of Korea University and Bekyangro of Yeonsei University, the targets of this study, actively explore this strategy. This study analyzed such strategies in terms of concept of space to obtain space, design trend of main universities at home and abroad, and viewpoint of integrated masterplan proposal. Conclusions from this study are as follows. First, concept of quad and center space found in the design of traditional campus is reinterpreted into new design aspects through development of underground space. Second, development of underground space is approached to overcome the limit of existing campus and to present the vision of universities 100 years ahead. Third, ever-changing complicated urban environment has been reflected in space configuration of campus and positioned as strategy to implement this as modern construction technique. Third, implementation of pedestrian-oriented campus has been pursued by reinforcing utilization of inclined topography of urban environment in Korea. This enables to obtain spaces for main activities of students and to implement the space where student support facilities are concentrated and activities are performed actively. Such features can be presented as conclusions of this study.

활성탄을 이용한 다성분계 페놀산 용액의 고정층 흡착 (Fixed-bed Adsorption of Phenolic Acids on Charcoal in Multi Solutes System)

  • 이원영;최용희
    • Current Research on Agriculture and Life Sciences
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    • 제15권
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    • pp.83-91
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    • 1997
  • 페놀성 화합물들은 단백질이나 금속 이온들과 결합하는 성질을 지녀 식품분야에서는 영양 저해물질 혹은 갈변의 원인물질로 알려져 있으며 또 이들물질이 상수원에 유입시 염소와 결합하여 악취나 발암물질을 형성하는 등 환경적으로 유해한 물질로 알려져 있다. 그러나 최근에는 이들 물질들의 항미생물 효과, 항암효과 등이 밝혀짐에 따라 유용한 물질로 이용될 가능성이 매우 높아졌다. 이들 물질들의 제거 또는 회수는 곧 유해물질의 제거 혹은 유용성분의 분리의 의미가 된다. 따라서 본 실험에서는 연속식 고정층 흡착을 다성분계 페놀산 용액에서 행하여 실제 흡착공정에 적용시 필수적인 자료인 파과곡선 및 파과점을 nonlinoar curve fitting방법을 이용하여 산정하였다. 흡착질의 종류가 증가할수록 파과곡선의 적합성은 점점 낮아졌으며 흡착속도에 있어서는 gallic acid가 가장 빨리 파과점을 지나고 ferulic acid, p-coumaric acid의 순으로 나타났다. 이들 결과로부터 다성분계에서의 연속식 고정층 흡착은 흡착제와 흡착질간의 ionic strength와 흡착질간의 분자량의 차이가 흡착량과 파과속도에 영향을 미치는 것으로 생각된다.

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Complete Chloroplast DNA Sequence from a Korean Endemic Genus, Megaleranthis saniculifolia, and Its Evolutionary Implications

  • Kim, Young-Kyu;Park, Chong-wook;Kim, Ki-Joong
    • Molecules and Cells
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    • 제27권3호
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    • pp.365-381
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    • 2009
  • The chloroplast DNA sequences of Megaleranthis saniculifolia, an endemic and monotypic endangered plant species, were completed in this study (GenBank FJ597983). The genome is 159,924 bp in length. It harbors a pair of IR regions consisting of 26,608 bp each. The lengths of the LSC and SSC regions are 88,326 bp and 18,382 bp, respectively. The structural organizations, gene and intron contents, gene orders, AT contents, codon usages, and transcription units of the Megaleranthis chloroplast genome are similar to those of typical land plant cp DNAs. However, the detailed features of Megaleranthis chloroplast genomes are substantially different from that of Ranunculus, which belongs to the same family, the Ranunculaceae. First, the Megaleranthis cp DNA was 4,797 bp longer than that of Ranunculus due to an expanded IR region into the SSC region and duplicated sequence elements in several spacer regions of the Megaleranthis cp genome. Second, the chloroplast genomes of Megaleranthis and Ranunculus evidence 5.6% sequence divergence in the coding regions, 8.9% sequence divergence in the intron regions, and 18.7% sequence divergence in the intergenic spacer regions, respectively. In both the coding and noncoding regions, average nucleotide substitution rates differed markedly, depending on the genome position. Our data strongly implicate the positional effects of the evolutionary modes of chloroplast genes. The genes evidencing higher levels of base substitutions also have higher incidences of indel mutations and low Ka/Ks ratios. A total of 54 simple sequence repeat loci were identified from the Megaleranthis cp genome. The existence of rich cp SSR loci in the Megaleranthis cp genome provides a rare opportunity to study the population genetic structures of this endangered species. Our phylogenetic trees based on the two independent markers, the nuclear ITS and chloroplast MatK sequences, strongly support the inclusion of the Megaleranthis to the Trollius. Therefore, our molecular trees support Ohwi's original treatment of Megaleranthis saniculifolia to Trollius chosenensis Ohwi.

2차원 및 3차원의 주기적인 구조 제작을 위한 2차원 이진 위상마스크의 설계와 분석 (Design and analysis of two-dimensional binary phase masks for the fabrication of two-and three-dimensional periodic structures)

  • 김남식;원영희;고근하;조두진
    • 한국광학회지
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    • 제12권1호
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    • pp.17-24
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    • 2001
  • 엄밀한 결합파 해석(rigorous coupled-wave analysis)을 이용하여 2차원 및 3차원의 주기적인 구조 제작을 위한 2차원 이진위상 회절격자를 설계 및 분석하였다. 이 회절격자는 근접장 홀로그래피를 위한 위상 마스크로서 수직 입사하는 빛에 대하여 여거 개의 회절파들을 발생하고 이들은 공간상에 주기적인 간섭무늬를 형성한다. 입사파의 편광상태, 파장, 표면 양각형태, 요철 깊이와 duty cycle을 바꿈으로써 회절된 빛들을 조절할 수 있는데 2차원 구조의 경우 0차 회절효율이 최소가 되고 1차회절효율이 최대가 될 때 최적의 결과를 보인다. 한편 0차 회절효율이 상당한 크기를 가지거나 심지어 다른 차수의 회절효율보다 높을 때 마이크로 미터 이하의 미세구조를 갖는 tetragonal-body-centered 구조와 hexagonal 구조의 포토닉 결정을 제작 할 수 있는 다양한 형태의 3차원 공간 간섭무늬가 형성된다.

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한국 동굴생물상 목록 및 연구 전망 (A List of Cave Fauna and Research Prospect in Korea)

  • 김병우;최용근;서호영;이훈;김원록;이원철
    • 환경생물
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    • 제22권1호
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    • pp.12-27
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    • 2004
  • 최초의 한국 동굴산 생물인 등줄굴노래기(Antrokorean gracilipes Verhoeff 1938)가 보고된 이후부터 약 70여년동안 출판된 동굴 생물상에 관한 112편의 국내외 논문과 16편의 보고서 그리고 10편의 단행본을 재정리하였다. 지금까지 한국산 동굴생물은 총 4문 10강 31목 94과 257종이 보고되었으며 36개소의 동굴과 4개의 우물에서 87종이 한국동굴(지하)산 모식종으로 기록되어 있다. 한국산 동굴생물은 절지동물류가 241종(93.8%)로 가장 우점하였고, 그 중에서 진정 거미류(Araneae)가 21종의 고유종을 포함하여 29과 97종으로. 가장 다양한 분류군 이었다.

우리나라 대도시지역 암 사망자에 대한 분석 -서울, 부산, 대구, 인천을 중심으로- (An Analysis of Deaths Caused by Cancer in Metropolitan Areas of Korea - Seoul, Pusan, Taegu, Incheon -)

  • 이채언;김준연
    • Journal of Preventive Medicine and Public Health
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    • 제20권1호
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    • pp.84-96
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    • 1987
  • For the purpose of preparing the basic data for further cancer epidemiologic study and cancer patients control, we conducted the analysis on the degree and structure of deaths from cancer in metropolitan areas of Korea with 7,934 certified cancer deaths records of Seoul, Pusan, Taegu and Incheon in 1982. The analyzed results were as follows: 1) The total number of cancer deaths in metropolitan areas were 7,934 (male: 4,749, female: 3,185) as 14.1% of deaths from all causes in the same area. 2) The rate of physician's certification on cancer deaths was 77.4% and most of cancer deaths (84.4%) occured at their home. 3) Cancer specific death rate was 51.7 per 100.000 population (male: 62.9, female: 41.9) and age-adjusted cancer death rate was 82.4 in male and 51.6 in female per 100,000 population. And the difference was statistically significant (p< 0.01). 4) Age-specific cancer death rate was generally increased with age and most of cancer deaths (male: 75% , female: 65%) occurred from 45 to 74 years old. 5) The first three orders of cancer site were stomach (32.7%), liver (28.8%), lung (11.7%) in male and stomach (30.6%), uterus (18.4%), liver (13.8%) in female. And the relative frequency of these three cancer sites among total cancer deaths was corresponded to 73.2% in male and 62.8% in female. 6) The ratio of male to female cancer death rate was 1.5:1. And the ratio was aboye 3.0 in esophagus, liver, larynx, bladder cancer and the ratio was similar to 1.0 in stomach, pancreas, leukemia, brain, colon cancer, but the ratio was reversed in gall bladder and bile duct, and thyroid cancer.

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진해만에서 수행된 소형선박을 이용한 음향과 트롤 시험조사 (An acoustic and trawl pilot survey using a small vessel in Jinhae bay of the South Sea of South Korea)

  • 박준성;이정훈;황강석;차형기;박준수;강명희
    • 수산해양기술연구
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    • 제52권1호
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    • pp.24-35
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    • 2016
  • An acoustic and trawl pilot survey using a small vessel was conducted in Jinhae bay of the South Sea of South Korea on April 13~14, May 11~13 and June 8~10, 2015. During the survey, acoustic data was collected and bottom trawls were conducted at the same time. First, various noises were eliminated by using the Park method based on the Wang method (Wang et al., 2015; Park et al., 2015), the species compositions and catch rate from each bottom trawl were observed, and spatial distribution of fishery resources in the water column and their nautical area scattering coefficient (NASC) were investigated through acoustic data. During the entire survey period, 12 orders, 33 families and 41 species were caught. The most caught species in April, May and June were Okamejei kenojei, Zoarces gilli and Pholis nebulosa, respectively. Fish schools were observed near the line of net mouth height in April. Numerous weak scatters were presented on the echograms in May and June. Many fish schools appeared in between the water surface and 20 m deep in May. The NASC value from entire water columns was the lowest in April ($35.9m^2/n{\cdot}mile^2$) and highest in June ($1541.3m^2/n{\cdot}mile^2$).

세존도 주변해역에 출현하는 저어류 군집의 종조성 (Species composition of the demersal fish assemblage in the coastal waters off Sejon island, Korea)

  • 고은혜;안영수;백근욱;장충식
    • 수산해양기술연구
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    • 제51권4호
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    • pp.630-636
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    • 2015
  • The study aims at analyzing a species composition of the fish live in bottom of the coastal waters off Sejon island, Korea. To reach the goal of the study, a species composition and it's seasonally fluctuation, a seasonally fluctuation of the dominant species and it's appearance type were analyzed with the fishes caught by the bottom trawl in the coastal waters off Sejon island from May, 2011 to March, 2012. The results obtained can be summarized as follows; Fish caught in this area composes 10 orders, 25 families, and 37 species. The most dominant species in an number of fish was Pennahia argentata which was occupied at 42.1% from the whole number, the second most dominant species was Konosirus punctatus which was occupied at 14.2%. The most dominant species in a biomass of fish was Pennahia argentata which was 31.3% out of the whole catch, the next dominant species was Lophius litulonwhich which was 18.2%. The first group (Trichiurus lepturus, Zeus faber, Pennahia argentata, Chelidonichthys spinosus and Lophius litulon) was appeared at May, August, October, the second group (Sphyraena pinguis) was appeared at May and November, the third group (Pampus argenteus) was appeared at August, the fourth group (Pampus echinogaster, Leiognathus nuchalis, Konosirus punctatus and Engraulis japonicus) was appeared at March.

수용액 합성법에 의한 ZnO 이중 나노구조물의 합성 (Fabrication of Double-layered ZnO Nanostructures by an Aqueous Solution Growth)

  • 채기웅;김정석
    • 한국세라믹학회지
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    • 제46권6호
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    • pp.596-601
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    • 2009
  • Double-layered ZnO nanostructures have been synthesized by aqueous solution method on (001) plane of ZnO nanorod. A stepwise changing of aqueous solution concentration gave rise to a new nano-structured layer consisting of either multiple of nanorods or nanowires with much smaller radii than that of the ZnO nanorod on which the new layer was grown. As the first step the ZnO nanorods have been grown to have the (001) preferential orientation in the aqueous solution consisting of 0.1M zinc nitrate and 0.1 M HMT. This preferentially aligned ZnO nanorods have been regrown in either a less diluted solution of 0.01M zinc nitrate and 0.01 M HMT or a more diluted solution of 0.005M zinc nitrate and 0.01 M HMT. A new nano-layer consisting of numerous aligned nanorods or nanowires has been produced on the (001) planes of ZnO nanorods. The growth mechanism for this double layered ZnO nanostructure is ascribed to the (001) polar surface energy instability and inhibition of (001) plane growth due to the step-wise change of aqueous solution concentration; ZnO nuclei formed on the (001) plane grow preferentially in (010) plane instead of (001) plane to reduce the total surface energy. Surface area of ZnO nanostructure can be increased in orders of magnitudes by forming a new layer consisting of smaller nanorods/nanowires on (001) plane of ZnO nanorods.

최근 족보에 나타난 여성지위의 분석적 연구 (An Analysis of the Women's Status Shown in the Family Pedigrees Recently Published)

  • 박옥임
    • 가정과삶의질연구
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    • 제4권2호
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    • pp.137-149
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    • 1986
  • This study has the purpose to aid that there will be a desirable household and social life analyzing the content in examples of the distinction between the sexes based on the family pedigrees published since 1980 year in Korea. 142 family pedigrees in Suncheon National University Library, National Central Library in Seoul and Cheon II Library in Kwangju as study data were used. Characters of the analyzing subject were born since 1940 year, who are still in existence possibly. The results of this study are as followings; 1) In the records of man and wife (1) The case which man's name was registered in detail and wife's name was not registered is 62.0% and more than a half. (2) The case which wife's schooling, career and occupation were not registered is 97.9%. 2) In the records of the relation between parents and children. (1) The case which only parents were registered in the ancestors of maternal line is 76.7%. (2) The case which foster sons were registered although the e were daughters is 15.5%, which is remarkable portions. 3) In the records of the relation of children (1) The case which the register orders were sons first and daughter later, not birth order is almost all 97.2% and the case which daughters were not registered is 2.1%. (2) The case which the married daughters names with sons-in-law were registered is 40.2%, whereas the case which only the names of sons-in-law were registered without daughters names is 56.3% and more than a half. (3) The case which grandsons in the daughter's line were registered only one case. In the above analysis results of Korean family pedigrees, the distinction ciousness to the wife and daughters as female among family members has been deeply conventionalized institutionally or conceptually.

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