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Food Organisms of the Postlarval Shad (Konosirus punctatus) in Kwangyang Bay (광양만 전어 (Konosirus punctatus) 후기자어의 먹이생물)

  • PARK Kwang Jae;CHA Seong Sig;HUH Sung Hoi
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.29 no.4
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    • pp.450-455
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    • 1996
  • To investigate the food organisms of the shad (Konosirus punctatus) during the postlarval stage, the gut contents of the shad, captured in Kwangyang Bay in June 1990, were observed. The food organisms food items of the shad larvae of $4.8\~5.0mm$ (NL) were copepod eggs and copepod nauplii, whereas those of the larvae longer than 5.0 mm (NL) were copepod nauplii and Tintinnopsis.

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레이저 표면 거칠기 측정에서 가중 함수에 의한 반사광 성분의 블렌딩

  • 서영호;안중환
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.05a
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    • pp.171-171
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    • 2004
  • 반사광은 표면에 대한 다양한 정보를 포함하고 있다. 반사광 속에서 표면의 거칠기 정보를 알아내 기 위한 노력이 계속되었고, 이를 통해 여러 표면 거칠기 측정법 중에서도 인프로세스 측정에 큰 장 점이 있는 것으로 밝혀졌다. 알려진 바로는 하나의 반사광을 정반사 성분와 난반사 성분으로 구분할 수 있으며 정반사 성분은 광 강도가, 난반사 성분은 광 분포가 중요하다. 매끈한 면에서는 정반사 성분이 지배적이며, 거친 면에서는 난반사 성분이 지배적이고, 그 중간 단계의 면에서는 두 성분이 합해져서 동시에 나타난다.(중략)

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SRAM Reuse Design and Verification by Redundancy Memory (여분의 메모리를 이용한 SRAM 재사용 설계 및 검증)

  • Shim Eun sung;Chang Hoon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.4A
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    • pp.328-335
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    • 2005
  • bIn this paper, built-in self-repair(BISR) is proposed for semiconductor memories. BISR is consisted of BIST(Buit-in self-test) and BIRU(Built-In Remapping Uint). BIST circuits are required not oがy to detect the presence of faults but also to specify their locations for repair. The memory rows are virtually divided into row blocks and reconfiguration is performed at the row block level instead of the traditional row level. According to the experimental result, we can verify algorithm for replacement of faulty cell.

분화와 발생양상의 조절기작에 관한 연구: 자외선 조사와 수정난의 회전이 배, 복축 극성의 결정에 미치는 영향

  • 정해문
    • The Korean Journal of Zoology
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    • v.25 no.3
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    • pp.107-114
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    • 1982
  • A combination of ultraviolet irradiation and egg rotation was applied to Korean frogs to study the mechanisms of the establishment of the dorsal-ventral polarity. Rotation of the uncleaved egg was capable of preventing the characteristic syndromes associated with UV irradiation. As well, brief rotation of the egg before cleavage relocates the site of dorsal lip to a novel location in the embryo at gastrula stage. That is, the dorsal lip appeared on the opposite side to gravity at the rotation of the egg. Above results were discussed with the informations obtained from other anuran and urodele species, and were interpreted in terms of regulating mechanisms for early embryogenesis.

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Separation of Diffuse and Specular Reflection for Image-Based Relighting (영상기반 재조명을 위한 전반사와 난반사 성분의 분리)

  • Lee Byoung-Hwa;Park Jong-Il;Lee Sang Hwa
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2003.11a
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    • pp.37-42
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    • 2003
  • 전반사는 물체의 사실적인 모습을 나타내는데 중요한 요소이지만 컴퓨터 비전에서는 처리하기 어려운 장애 요소이다. 본 논문에서는 영상기반 재조명을 위하여 조명 조건이 다른 복수의 영상으로부터 전반사 성분과 난반사 성분을 분리하는 효과적인 알고리즘을 제안한다. 이 알고리즘은 전반사 성분이 존재하는 영상과 난반사 성분만이 존재하는 영상에 대하여 난반사 성분의 RGB 값은 서희 비율을 유지하면서 변한다는 성질을 이용하여 전반사 성분을 분리한다. 그리고 실험을 통하여 이 알고리즘의 유효성을 확인하였다.

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올 봄 전세 시장 안정이 집값 안정의 시금석

  • Cha, Hak-Bong
    • 주택과사람들
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    • s.201
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    • pp.42-45
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    • 2007
  • 올 봄에도 이사철이면 어김없이 나타났던 '고질병'인 전세난이 재현될 거라는 염려가 커지고 있다. 수요가 몰리는 수도권 입주량이 지난해보다 감소할 전망이어서 수급 불균형에 다른 전세난은 불가피하다는 게 관련 업계의 전망이다. 이에 따라 정부에서는 중장기적으로 얼마나 큰 영향력을 발휘할 수 있을 지 의문이다.

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Distribution of Ichthyoplankton in the Adjacent Waters of Wolsong, Korea (월성 주변 해역의 부유성(浮游性) 난(卵)과 자치어(仔稚魚)의 분포(分布))

  • Cha, Seong-Sig;Park, Kwang-Jae;Yoo, Jae-Myung;Kim, Yong-Uk
    • Korean Journal of Ichthyology
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    • v.3 no.1
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    • pp.11-23
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    • 1991
  • To study the distribution of inhthyoplankton in the adjacent water of Wolsong, samples were collected using Bongo net from the surface water in November of 1989, and February, May and July of 1990. Fish eggs were divided into Engrualis japonicus, Callionymidae, Maurolicus muelleri, Konosirus punctatus, and others. The dominant species of fish eggs were Maurolicus muelleri and Callionymidae accounting for 60.1% and 13.7% of the total egg abundance, respectively. Total of 21 taxa of fish larvae occurred. The predominant species was Engraulis japonicas accounting for 61.2% of the total lavae, and bollowed by Callionymidae(11.9%). Other major species were Maurolicus muelleri, Gobiidae sp., Ammodytes personatus, Sebastes inermis, S. Pachycephalus, Scartella cristata, and Sebastiscus marmoratus. These 9 taxa constituted 96.5% of the total larvae collected. In this area, where upwelling occasionally occurs the distribution of fish eggs and larvae appeared to be affected by the transport of the surface water during the upwelling period.

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Seasonal Variation of the Pelagic Fish Egg Community in the Mid-east Coastal Waters of the Yellow Sea (황해(黃海) 중동부(中東部) 연안역(沿岸域)의 부유성(浮游性) 어란(魚卵) 군집(群集)의 계절(季節) 변동(變動))

  • Cha, Seong Sig;Shim, Jae Hyung
    • 한국해양학회지
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    • v.23 no.4
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    • pp.184-193
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    • 1989
  • To study the pelagic fish egg community in the mid-east coastal waters of the Yellow Sea, pelagic eggs were sampled with Bongo net at 13 stations from Chonsu Bay to Keum Estuary from July, 1985 to June, 1986. Nineteen taxa of pelagic eggs were collected. Among them, 7 taxa were identified to the species level, and 2 taxa to the family level. Engraulis japonica was the most abundant species with 89.5% of the total eggs; Sillago japonica was 2.5%; Clupanodon punctatus, 2.4%; Herklotsichthys zunasi, 1.7%; Callionymidae spp., 1.6%. These 5 taxa occupied 97.7% of the total eggs. Pelagic eggs occurred from April to October. In June and July, their abundances were high, but the species diversities were low as E. japonica eggs were predominant. The range of spawning temperature for each taxa were estimated from the occurence pattern of the pelagic eggs.

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Protein Contents During Oocyte Development and Some Characteristics of Egg-Specific Protein in Lucilia illustris (연두금파리의 난세포성숙에 따른 단백질의 변화와 난특이성단백질의 특성)

  • Lee, Jong-Jin;Man-Young Choi;Hee-Kwon Lee
    • Korean journal of applied entomology
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    • v.34 no.2
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    • pp.140-146
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    • 1995
  • Changes in protein content during oocyte development was measured and egg-specific protein was characterized from the eggs in Lucilia illustris. During normal development ovarian protein was rapidly increased at 72hr and reached maximum at 96hr after a protein meal, when the eggs were fully matured. Purified protein from the ovaries by gel filtration of DEAE-cellulose an Sephacryl S-200 was loaded on 7.5% native polyacrylamide gel electrophoresis and identified at ${R}_{f}$ 0.4 as egg-specific protein, which has a mol. wt of 110,000. A total of 13 amino acids in th egg-specific protein was identified and expecially asparagine, glutamic acid, and tyrosine were highly concentrated. Five fatty acids were also identified. It is suggested that there is a specific protein in the eggs of L. illustris except yolk protein synthesized and secreted by fat body.

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The Convergence Study on the Effects of White Ginseng Complex Extracts on OVA-induced Allergic Asthma in Mice (백삼복합물이 난알부민으로 유도된 천식 마우스에서의 천식개선에 대한 융복합 연구)

  • Ji, Joong-Gu
    • Journal of Digital Convergence
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    • v.14 no.6
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    • pp.317-323
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    • 2016
  • The aim of the convergence study is to evaluate anti-asthma effects of white ginseng complex extract(WGCE) on OVA-induced allergic asthma in mice. WGCE was administered at 100 mg/kg and 300 mg/kg to mice, where asthma was induced by OVA. Th2 cytokine including IL-4, IL-5 and IL-13 were measured by Luminex. Also, OVA-IgE and eosinophil were measured by haemocytometer and BALF total cells were measured microscope. Production of IL-4, IL-5, IL-13 and OVA-IgE in serum was decreased, respectively, in comparison with control. The eosinophil in whole blood decreased significantly. In addition, WGCE groups showed a decrease in the BALF total cells. These results demonstrated that WGCE decreases the Th2 cytokine and asthma factors. Therefore, we strongly suggest that WGCE could be effectively used as a therapeutic drug based on its anti asthma factors.