• 제목/요약/키워드: atlantic

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대서와 보라밸리 감자 두 품종의 이화학적 특성 (Physico-chemical Characteristics of Atlantic and Bora Valley Potato)

  • 이재순;박수진;김진숙;최미경;임학태;강명화
    • 한국식품영양학회지
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    • 제22권1호
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    • pp.92-96
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    • 2009
  • Comparisons of the physico-chemical characteristics between white Atlantic potatoes and violet Bora Valley potatoes were performed. According to the results, Bora Valley had 7% higher moisture content than Atlantic, but there were no differences in crude fat and crude ash contents. Bora Valley, however, had about 3% less crude protein content than Atlantic. In a vitamin C analysis by HPLC, the Atlantic and Bora Valley potatoes contained 14% and 39% vitamin C, respectively, indicating that Bora Valley contained about twice as much of the vitamin as Atlantic. In a vitamin C analysis by HPLC, the Atlantic and Bora Valley potatoes contained 14% and 39% vitamin C, respectively, The dietary fiber content of Bora Valley was 3.12 g per 100 g higher than that of the Atlantic variety. While Atlantic contained neither glucose nor fructose, both sugars were measured in the Bora Valley potatoes, and there was no difference in sucrose content between the cultivar.

Influence of Stratospheric Intrusion on Upper Tropospheric Ozone over the Tropical North Atlantic

  • Kim, So-Myoung;Na, Sun-Mi;Kim, Jae-Hwan
    • 한국지구과학회지
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    • 제29권5호
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    • pp.428-436
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    • 2008
  • This study observed the upper tropospheric ozone enhancement in the northern Atlantic for the Aerosols99 campaign in January-February 1999. To find the origin of this air, we have analyzed the horizontal and vertical fields of Isentropic Potential Vorticity (IPV) and Relative Humidity (RH). The arch-shaped IPV is greater than 1.5 pvus indicating stratospheric air stretches equatorward. These arch-shaped regions are connected with regions of RH less than 20%. The vertical fields of IPV and RH show the folding layer penetrating into the upper troposphere. These features support the idea that the upper tropospheric ozone enhancement originated from the stratosphere. Additionally, we have investigated the climatological frequency of stratospheric intrusion over the tropical north Atlantic using IPV and RH. The total frequency between the equator and $30^{\circ}N$ over the tropical north Atlantic exhibits a maximum in northern winter. It suggests that the stratospheric intrusion plays an important role in enhancing ozone in the upper troposphere over the tropical north Atlantic in winter and early spring. Although the tropospheric ozone residual method assumed zonally invariant stratospheric ozone, stratospheric zonal ozone variance could be caused by stratospheric intrusions. This implies that stratospheric intrusion influences ozone variance over the Atlantic in boreal winter and spring, and the intrusion is a possible source for the tropical north Atlantic paradox.

Interpretation of tropical tropospheric ozone derivation from TOMS

  • Na Suomi;Kim Jae-Hwan
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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    • pp.366-369
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    • 2005
  • A persistent maximum over the southern tropical Atlantic in the latitudinal tropospheric ozone distribution from the CCD method is seen in the latitudinal tropospheric ozone distribution from the TOMS-Pacific method. The tropical Atlantic paradox exists in the results of both the CCD and TOMS-Pacific methods. During the northern burning season, the latitudinal distributions in the tropospheric ozone derived from the TOMS-SAGE and TOMS-Sonde methods show higher tropospheric ozone over the northern tropical Atlantic than the southern Atlantic due to a stronger gradient in stratospheric ozone relative to that from the CCD and TOMS-Pacific methods.

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Implication of the Change in Overturning Circulation to the LGM CO2 Budget

  • Kim, Seong-Joong;Lee, Bang-Yong;Yoon, Ho-Il;Kim, Yea-Dong
    • Ocean and Polar Research
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    • 제26권3호
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    • pp.501-506
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    • 2004
  • The observational proxy estimates suggest that the North Atlantic overturning stream function associated with the North Atlantic Deep Water (NADW) production and outflow was substantially weaker during the last glacial maximum (LGM) than that observed under present conditions. The impact of the changes in overturning circulation on the glacial carbon budget is investigated using a box model. The carbon box model reveals that the atmospheric $CO_2$ concentration is more sensitive to change in the overturning circulation of the North Atlantic than that of the Southern Ocean, especially when North Atlantic overturning becomes weaker. For example, when the strength of the North Atlantic overturning circulation is halved, the atmospheric $CO_2$ concentration is reduced by 50ppm of that associated with the accumulation of $CO_2$ in the deep ocean. This result implies that a weaker North Atlantic overturning circulation may play an important role in the lowering of LGM atmospheric $CO_2$ concentration.

Analysis of Tropical Tropospheric Ozone Derivation from Residual-Type Method

  • Na Sun-Mi;Kim Jae-Hwan
    • 대한원격탐사학회지
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    • 제22권1호
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    • pp.1-10
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    • 2006
  • During the northern burning season, biomass burning is found north of the equator, while satellite estimates from the residual-type method such as the CCD method show higher ozone south of the equator. This discrepancy is called the tropical Atlantic paradox (Thompson et ai., 2000). We use satellite and ground-based measurements to investigate the paradox. When the background tropospheric ozone over the Pacific Ocean from TOMS measurements is subtracted from the latitudinal total ozone distribution (e.g. TOMS-Pacific method), the results show remarkable agreement with the latitudinal stratospheric ozone distribution using the CCD method. The latitudinal tropospheric ozone distribution using the CCD method, with a persistent maximum over the southern tropical Atlantic, is also seen in the latitudinal tropospheric ozone distribution using the TOMS-Pacific method. It suggests that the complicated CCD method can be replaced by the simple TOMS-Pacific method. However, the tropical Atlantic paradox exists in the results of both the CCD and TOMS-Pacific methods during the northern buming season. In order to investigate this paradox, we compare the latitudinal ozone distributions using the CCD and TOMS-Pacific methods by using the SAGE measurements (e.g. TOMS-SAGE method) and the SHADOZ ozonesoundings (e.g. TOMS-Sonde method) assuming zonally invariant stratospheric ozone, which is the same assumption as of the CCD method. During the northern burning season, the latitudinal distributions in the tropospheric ozone derived from the TOMS-SAGE and TOMS-Sonde methods show higher tropospheric ozone over the northern tropical Atlantic than the southern Atlantic due to a stronger gradient in stratospheric ozone relative to that from the CCD and TOMS-Pacific methods. This indicates that the latitudinal tropospheric ozone distribution can be changed depending on the data that is used to determine the latitudinal stratospheric ozone distribution. Therefore, there is a possibility that the north-south gradient in stratospheric ozone over the Atlantic can be a solution of the paradox.

RAPD-PCR 분석에 의해 결정된 갈치 (Trichiurus lepturus) 2 집단의 유전적 차이와 변이 (Genetic Differences and Variation in Two Largehead Hairtail (Trichiurus lepturus) Populations Determined by RAPD-PCR Analysis)

  • 박창이;윤종만
    • 한국어류학회지
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    • 제17권3호
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    • pp.173-186
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    • 2005
  • 한국과 대서양산 갈치 (Trichiurus lepturus) 2지리적 집단으로부터 genomic DNA를 분리 추출하였다. 선택된 8개의 RAPD primer를 이용하여 common, polymorphic 그리고 specific fragment를 얻어냈다. 2지역으로부터 primer간 banding patterns 의 복잡성이 두드러지게 나타났다. DNA fragment 의 분자적 크기는 150 bp에서부터 3,000 bp까지 커다란 차이를 나타내었다. 본 연구에서 한국산 갈치 집단에서는 947개의 fragment가 나타났고, 대서양산 갈치 집단에서는 642개의 fragment 가 확인되었다. 또한 한국산 집단에서는 148개의 specific fragment (15.6%) 가 확인되었으며, 대서양산 갈치집단에서는 61개의 specific fragment (9.5%)가 발생되었다. 한국산 갈치집단에서는 638개의 common fragment가 나타났으며, 이는 primer 당 평균적으로 79.8개의 fragment 로 확인되었다. 또한 대서양산 갈치집단에서는 429개의 common fragment 가 확인되었고, 평균해서 primer 당 53.6개의 common fragment 가 나타났다. 한국산 갈치집단과 대서양산 갈치집단의 polymorphic fragment는 각각 76개와 27개로 확인되었다. 모든 갈치시료의 평균적인 bandsharing value를 기초로 해서 한국산 갈치집단의 similarity matrix를 조사해 본 결과 0.784 로부터 0.922까지 나타났고, 대서양산 갈치집단의 값은 0.833로부터 0.990까지 확인되었다. 결과적으로 대서양산 갈치집단내 개체의 bandsharing value 평균값은 한국산 갈치집단의 평균값보다 높게 나타났다. 8개의 primer를 사용하여 얻어진 dendrogram은 cluster 1 (KOREAN 01~KOREAN 11) 및cluster 2 (ATLANTIC 12~ATLANTIC 22)와 같이 2개의 유전적 클러스터로 나뉘어졌다. 한국산 갈치집단내의 10번째 개체(KOREAN no. 10)와 11번째 개체(KOREAN no. 11) 사이가 가장 가까운 유전적 관계(genetic distance = 0.038)를 나타내었다. 궁극적으로 볼 때 한국산 갈치집단의 1번째(KOREAN no. 01)와 대서양산 갈치집단의 16번째(ATLANTIC no. 16) 개체 사이가 가장 먼 유전적 거리(genetic distance = 0.708)를 나타내었다.

색깔이 다른 대서와 보라밸리 감자 전분의 이화학적 특성 (Physico-Chemical Properties of Starches from Atlantic and Bora Valley Potato Cultivar with Different Colors)

  • 이재순;최미경;문은영;강명화
    • 한국식품영양과학회지
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    • 제39권4호
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    • pp.542-547
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    • 2010
  • 색깔이 다른 대서와 보라밸리 감자로부터 전분을 추출하여 수율, amylose, amylopectin 함량비, 팽윤력, 수분결합능 및 X-ray 전분 구조와 같은 전분의 이화학적 특성을 측정하였다. 두 감자간의 amylose와 amylopectin의 함량 비에는 유의적인 차이(p<0.05)가 나타났고 두 감자 모두에서 amylose 함량이 높아 찰성이라기보다는 매성으로 나타났다. X-ray와 주사전자현미경을 통해 입자를 관찰한 결과 대서와 보라밸리의 모양의 차이와 전분 구조의 차이는 보이지 않았다. 대서와 보라밸리 전분의 입도분석 결과, $50\;{\mu}m$ 안에 포함되는 전분입자 크기가 대서는 $45.44\pm2.79%$이며, 보라밸리는 $42.37\pm1.03%$의 분포였다. 대서와 보라밸리 전분의 수분결합능력의 차이는 보이지 않았다. 반면, 팽윤력은 $65^{\circ}C$에서 시작하여 $80^{\circ}C$에서 높은 증가를 보였으며, $90^{\circ}C$에서 보라밸리 전분의 팽윤력보다 대서의 팽윤력이 약 0.3% 정도 높았다. 대서와 보라밸리 전분의 호화도를 측정한 결과 호화 개시온도, 호화절정온도, 호화종결온도에서 대서보다 보라밸리가 높은 온도를 보였다.

남동대서양 파타고니아이빨고기(Dissostichus eleginoides)의 분포 (Distribution of Patagonian toothfish(Dissostichus eleginoides) by bottom longliner in the southeastern Atlantic Ocean)

  • 김두남;김영승
    • 수산해양기술연구
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    • 제44권4호
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    • pp.304-311
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    • 2008
  • Patagonian toothfish(Dissostichus eleginoides) was investigated in the southeastern Atlantic Ocean during the period of 19 March to 7 July 2007 by commercial bottom longliners. The number of 116 hauls were carried out individually in this study area by two bottom longliners during 111 days. The total catches were 89,559kg(9.91kg/100hooks) and 66,758kg(7.38kg/100hooks), respectively. Most Patagonian toothfishes were caught on the $46-48^{\circ}S$, $6-11^{\circ}E$ of southeastern Atlantic Ocean. Patagonian toothfish comprised 67.01-92.49%(by weight) of the catches in the southeastern Atlantic Ocean. No Antarctic toothfish (Dissostichus mawsoni) was caught during the surveys. Patagonian toothfish was found throughout the experimental area, but the density was considerably greater in the layer of 1,300-1,900m, where 49.88% of the fishes were caught. Smaller fishes were generally distributed to the shallow waters and larger fish were more frequently caught with the depth. Mean size of Patagonian toothfish increased with depth of capture. Accordingly economically profitable fishing activities for the Patagonian toothfish fishery requires an understanding of the size distribution of the Patagonian toothfish by depth.

Ginseng Cultural Management and Research Update in Atlantic Canada

  • Ju, H.Y.;Asiedu, S.K.;Hong, S.C.;Gray, B.;Sampson, G.;LeBlanc, P.
    • 고려인삼학회:학술대회논문집
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    • 고려인삼학회 1998년도 Advances in Ginseng Research - Proceedings of the 7th International Symposium on Ginseng -
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    • pp.103-108
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    • 1998
  • The Canadian production of American ginseng (Panax quinquefolius L.) occurs mainly in Ontario, British Columbia and the Atlantic provinces. Although ginseng is a profitable crop, its successful production is dependent on careful consideration of cultural management f include site selection, site preparation, seed selection and handling, shading actors which and mulching, pest and nutritional management, and handling of harvested crops. Diseases of particular concern in Atlantic Canada are root rots caused by Phytopkthora cactorum, Cylindrocarpon destructans and Fusarium sp. Recently two systemic fungicides (metalaxyl and fosetylal) were registered; however, growers in Atlantic Canada have experienced metalaxyl resistance resulting from the reliance on this single compound for the control of Phytophthora sap. Current research being conducted on alternative control of these diseases will be discussed. In weed control research, 2, 4-D, MCPA, clopyralid have continued to show promise for weed contro1 at low rates. In trials to evaluate non-selective herbicides as post-senescence or pre-emergence in ginseng, glyphosate (Round-up) provided control of perennials as well as willowherb and lambsquarters. In phytoxicity trials, ginseng significantly tolerated grass herbicides, including clethodim, rimsulfuron, trakloxydim, nicosulfuron and fenoxyprop. For broadleaf herbicides, significant tolerance was shown for bromoxynil, thifensulfuron methyl, flumetulam/clopyralid, thifensulfuro/tribenuron. Disease and weed management of ginseng in Atlantic Canada will be discussed.

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Genetic Distances Within-Population and Between-Population of Tonguesole, Cynoglossus spp. Identified by PCR Technique

  • Yoon, Jong-Man
    • 한국발생생물학회지:발생과생식
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    • 제23권3호
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    • pp.297-304
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    • 2019
  • The higher fragment sizes (>2,100 bp) are not observed in the two C. spp. populations. The six oligonucleotides primers OPA-11, OPB-09, OPB-14, OPB-20, OPC-14, and OPC-18 were used to generate the unique shared loci to each tonguesole population and shared loci by the two tonguesole populations. The hierarchical polar dendrogram indicates two main clusters: Gunsan (GUNSAN 01-GUNSAN 11) and the Atlantic (ATLANTIC 12-ATLANTIC 22) from two geographic populations of tonguesoles. The shortest genetic distance displaying significant molecular difference was between individuals' GUNSAN no. 02-GUNSAN no. 01 (genetic distance=0.038). In the long run, individual no. 02 of the ATLANTIC tonguesole was most distantly related to GUNSAN no. 06 (genetic distance=0.958). These results demonstrate that the Gunsan tonguesole population is genetically different from the Atlantic tonguesole population. The potential of PCR analysis to identify diagnostic markers for the identification of two tonguesole populations has been demonstrated. As a rule, using various oligonucleotides primers, this PCR method has been applied to identify polymorphic/specific markers particular to species and geographical population, as well as genetic diversity/polymorphism in diverse species of organisms.