• The Korean Journal of Ecology
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• v.6 no.4
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• pp.257-260
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• 1983

The concentration of heavy metals in 12 eggs collected from 6 nests of Intermediate Egret, Egretta intermedia intermedia from Ogjong-myun, Hadong-gun, Kyungnam, was examined by atomic absorption spectrophoto-meter method in 1983. It was found that heavy metals are contained in their eggs with highest concentration Cd and Cu in the eggshell and Cr, Zn, Pb and Mn in the yolk, respectively. The thin-shelled group, by their eggshell thickness grouping, contained heavy metal in higher amount than that of thick eggshelled group. And the thin group showed small values in weight of individual egg, its yolk and albumen.

• Journal of the Korean earth science society
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• v.38 no.7
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• pp.598-602
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• 2017

• Korean Journal of Environment and Ecology
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• v.19 no.2
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• pp.162-176
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• 2005

This study was carried out as a field survey and a review of articles to investigate a characteristic of the distribution pattern in Korean endemic Corylopsis coreana. Distribution of Corylopsis coreana was found in Boseung-gun, Gwangyang-si, Suncheon-si, Jeumam-myeon Goheung-gun, Ganjeon-myeon Gurye-gun, Mt, Cheongwan Jangheung-gun, Nogodan Mt. Jiri in Jeollanam-do, Mt. Cheonhwang Namwon-si and Beamsagol and Banyabong Mt. Jiri in Jeollabuk-do, Sancheong-gun, hadong-gun and Namhea-gun in Gyeongsangnam-do and Mt. Backun, Pocheon-si in Gyeonggi-do. Total flora in the distribution region of Coryloplsis coreana was recorded as 242 taxa; 70 families, 159 genus, 216 species, 22 varieties, 4 forma. Ratio of taxonomic categories was consisted of Pteridophyte $5.8\%$, Gymnosperm $3.7\%$, Dicotyledon $18.6\%$ and Monocotyledon $71.9\%$. Ratio of Life cycle styles was Annual $1.7\%$ and Perennial $93.3\%$. Ratio of growth habit was appeared to Herb $44.2\%$, Vine $12.4\%$, Shrub $17.8\%$ and Tree $25.6\%$. The distribution region of Corylopsis coreana found to typical type which distribute in N, NE or NW slope. The native Corylopsis coreana of Sinjeonri Sungju-eup in Jellanam-do appeared to have a declining tendency which was caused by influence of tree lager.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.360-360
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• 2021

최근 지구 온난화와 기후변화, 그에 따른 이상기후로 인하여 대규모 홍수피해가 발생함과 동시에 오랜 시간 동안 가뭄이 지속되어 재난관리가 더욱 중요하게 인식되고 있다. 영산강홍수통제소는 효율적인 재난관리를 위해 영산강권역의 5대강 및 해안지역의 수위·강수량·유량 등 수문조사시설을 설치·운영하여 홍수·갈수예보를 통해 재난관리를 수행하고 있다. 2020년 영산강홍수통제소 관할권역의 홍수기 강수량은 예년에 비해 약 150% 내외의 많은 강수가 내렸다. 영산강, 섬진강, 동진강 수계는 8월에 가장 많은 비가 내려 487.4 mm, 619.5 mm, 503.7 mm의 강수가 기록되었고, 8월의 예년 대비 강수량은 181%, 200%, 192% 수준이었다. 만경강과 탐진강은 7월 강수량이 535.1 mm, 365.5 mm로 가장 많았고, 7월 강수량의 예년비는 193%, 141%의 수준이었다. 특히 8.7~8.8일 섬진강 유역의 남원시(신덕리)와 영산강 유역 담양군(광주댐)에는 각각 542 mm, 654 mm의 기록적인 강수가 관측되었다. 이틀간의 집중호우로 영산강 및 섬진강 유역의 여러 지역에서 홍수피해가 발생했으며, 특히 남원시, 구례군, 하동군에서 홍수 피해 규모가 컸다. 영산강홍수통제소는 2020년 총 51회의 비상근무를 실시하여 홍수상황에 대응 하였으며, 15개 홍수특보지점 중 탐진강 유역 장흥군(예양교)를 제외한 14개 지점에 대해 홍수주의보 22회, 홍수경보 14회 등 36회의 홍수특보를 발령하였다. 홍수특보 지점의 대부분 지점에서 기왕 최고치에 근접하거나 이를 초과하였다. 홍수주의보 수위를 초과한 지점은 총 14개소이며, 이 중 계획홍수위 초과 6개소, 홍수경보 수위 초과 5개소, 홍수주의보 수위 초과 3개소이다. 또한 위기단계별 홍수정보 943건을 30개기관 595명에게 제공하여 관계기관의 방재활동을 지원하였으며, 관할수계 다목적댐 3개소, 발전댐 1개소, 용수댐 1개소, 농업용저수지 10개소, 다기능보 2개소, 홍수조절지 2개소에 181회의 방류승인을 통해 홍수조절을 실시하였다. 본 연구에서는 2020년 홍수기간 동안 영산강 및 섬진강의 홍수상황 및 홍수대응 현황을 분석하고, 향후 홍수상황에 대비코자 한다.

• Korean Journal of Heritage: History & Science
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• v.44 no.1
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• pp.4-29
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• 2011

Paleoenvironments of the shell deposit-bearing sequence in the Hasandong Formation at Daesong-ri area, Hadong-gun, Korea, are interpreted on the basis of sedimentary facies and taphonomy of the shell deposits, with a discussion of their stratigraphic implications. A shell deposit-bearing sequence without reddish beds is mostly grayish, and the bedding is laterally extensive. These deposits are interpreted to have been formed in sandflats, mudflats, and shallow lakes generated by flooding on an alluvial plain. The shell deposits are classified into three types according to the occurrence, and the concentration of a single species of Brotiopsis wakinoensis in the shell deposits is deemed to have been attributed to the exclusive inhabitation of the genus Brotiopsis. Type 1 and 2 shell deposits are interpreted to have been fossilized in sandflats and mudflats after death in their habitat of shallow lakes and subsequent transformation by sheetflooding and lake flooding. Type 3 shell deposits are interpreted to have been fossilized in their habitat of shallow lakes during a stabilized period of lake development. The development of the shell deposit-bearing lacustrine sequence in a few tens of meters in thickness in the Hasandong Formation of fluvial deposits is compared to the shift of depositional environments from the Hasandong Formation (fluvial deposits) through the Jinju Formation (lacustrine deposits) to the Chilgok Formation (alluvial plain deposits), which suggests that additional lithostratigraphic classification is needed in the Hasandong Formation. The shell deposits at the study area can provide valuable data to understanding the paleoenvironments during the Early Cretaceous Period of Korea, and should give basic data to evaluate the value of the Cretaceous mollusc deposits in Korea as a geological heritage.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.04a
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• pp.85-101
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• 2005

This study was carried out a field survey and review articles to investigate a characteristic of the distribution pattern in Korean endemic Corylopsis coreana. Distribution of Corylopsis coreana was found from Boseung-gun, Gwangyang-si, Suncheon- si, Jeumanl-myeon Goheung-gun, Ganjeon-myeon Gurye-gun, Mt. Cheongwan Jangheung-gun, Nogodan Mt. Jiri in Jeollanam-do, Mt. Cheonhwang Namwon-si and Beamsagol and Banyabong Mt. Jiri, in Jeollabuk-do, Sancheong-gun, hadong-gun and Namhea-gun in Gyeongsangnam-do and Mt. Backun, Pocheon-si in Gyeonggi-do. Total flora in the distribution region of Coryloplsis coreana were recorded as 242 taxa; 70 families, 159 genus, 216 species, 22 varieties, 4 forma. Ratio of taxonomic categories was consisted of Pteridophyte $5.8\%$, Gymnosperm $3.7\%$, Dicotyledon $18.6\%$ and Monocotyledon $71.9\%$. Ratio of Life cycle styles was Annual $1.7\%$ and Perennial $98.3\%$. Ratio of growth habit was appeared to Herb $44.2\%$, Vine $12.4\%$, Shrub $17.8\%$ and Tree $25.6\%$. The distribution region of Corylopsis coreana found to typical type which distribute in N, NE or NE slope. The native Corylopsis coreana of Sinjeonri Sungju-eup in Jellanam-do appeared to a declining tendency which caused by influence of tree lager.

• Research in Plant Disease
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• v.22 no.1
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• pp.9-17
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• 2016

Nationwide survey for angular leaf spot (ALS) of strawberry caused by Xanthomonas fragariae, a quarantine disease in Korea, was performed in November 2012. In the survey, ALS was observed in eighty eight farmers' fields of Sukok, Jinju and Okjong, Hadong in Gyeongnam Province, and one field in Namwon of Jeollabuk Province. The infected field of Namwon closed immediately after the disease diagnosed ALS. In detailed survey of Sukok and Okjong areas during February 2012 to January 2015, ALS occurrence decreased from 45% farmer's fields on December 2012 to 5% on January 2015, and from 38% on November 2013 to 5% on January 2015, respectively. Phenotypic characteristics of the Korean strains were similar to those of the type strain of X. fragariae. A multilocus sequence analysis of Korean strains of X. fragariae was conducted using four genes; dnaK, fyuA, gyrB, and rpoD. All the Korean strains had the same sequences of the four genes. The concatenated sequences of the Korean strains shared 100% with that of the type strain of X. fragariae. All strawberry cultivars tested were susceptible to the strains of X. fragariae two weeks after inoculation. The inoculated sites were necrosis and expanded, which were rated 4 based on evaluation of inoculation site.

• Journal of the Mineralogical Society of Korea
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• v.16 no.4
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• pp.321-331
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• 2003

We researched the variation of mineral composition with depth and the Cu adsorption behavior of Hwangto in the Okjong area, Hadong. The 4 Hwangto samples were collected from depth 10 cm, 25 cm, 2∼3 m and under 3 m from surface, and analyzed using the X­ray Diffractometer. The Hwangto samples were mostly composed of clay minerals such as kaolinite and halloysite. Two samples from 10 cm and 25 cm contained Fe or Al hydroxide minerals, for example goethite or gibbsite. As depth increases, the content of quartz decreases but that of kaolinite increases. The amount of Cu removal was rapidly rised from pH 4, and reached about 90％ at pH 6 and above 90％ at pH 7. It is regarded that the trend of Cu removal was affected by the difference in mineral composition. It was relatively well matched between experimental value and calculated value by MINTEQA2 program in the case of high Cu concentration. From this study the precipitation has important role for the removal of Cu ions, particularly in the case of high Cu concentration. However, it was discord between experimental value and calculated one in the dilute concentration circumstances. The reason may be the mistake in parameters, insufficient reaction time, and inadequate consideration of reaction site in mineral surface.

• 한우개량
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• no.4 s.25
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• pp.22-27
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• 2000

지금 한우개량에 대한 관심이 일기 시작하고 있다 한우 농가라면 누구나 훌륭하게 개량된 한우를 가지기를 원한다 이것은 농가의 소득과 직결 된 것으로 너무나 당연하다. 특히 고급육을 생산하여 도매시장에 출하 해본 농가라면 도체 성적에 따라 가격 차이가 크다는 것을 경험했을 것이다. 이때 농가는 자기 집의 동일한 환경에서 동일한 사료를 급여하여 출하 한 소가 왜 출하 체중도 다르고 도체성적이 다를까 하는 의문을 가지게 되며 이것은 바로 종자에서 오는 차이임을 알게 된다. 이때부터 농가는 육량과 육질이 우수한 종자가 따로 있음을 알고 우수한 밑소를 찾기 시작한다. 이처럼 한우개량에 대한 관심은 고급육 생산 농가로부터 일기 시작하여 전국적으로 한우농가와 지방자치단체를 중심으로 관심이 고조되고 있다 지금까지의 한우개량사업은 정부 주도로 추진되어 왔을 뿐 지방자치단체나 일반 한우농가는 별로 관심을 보이지 않은 것이 사실이다. 이제 일부 지자체에서는 자기지역 한우농가의 소득향상과 지역경제 활성화를 위하여 지역 환경에 맞는 개량체계를 구축하여 추진하고 있다. 경남지역에서는 1999년도 경남 고성군의 한우산업 장기 발전 5개년 계획을 세워 추진하는 것을 시작으로 하여 함안, 남해, 밀양, 하동 등에서 개량사업을 독자적으로 추진하고 있고 다른 시 군에서도 많은 관심을 가지고 있다. 본고에서는 경남지역의 지방자치단체가 추진하고 있는 한우개량사업에 대하여 소개하고자 한다.

• Korean Journal of Food Science and Technology
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• v.53 no.4
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• pp.454-462
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• 2021

This study investigated the antioxidant and nitric oxide (NO) inhibition effects of three domestic and seven foreign fermented black tea 70% ethanol extracts. Bosung showed the highest total polyphenol and tannin contents. Jeju showed the highest total flavonoid contents. The theanine content was higher in Hadong (651.50 mg%) than in foreign fermented black tea. At 25 ㎍/mL, the domestic fermented black tea extract showed the highest DPPH and ABTS racial-scavenging activities, reducing power assays. Domestic fermented black tea showed higher NO inhibitor activity than foreign black tea at 50 ㎍/mL. Bosung black tea extract showed an increase in SOD-1 level (1.39-fold) compared to the LPS-only group. Bosung and Jeju decreased the GST protein by 1.52- and 1.46-folds, respectively, compared to the LPS-only group. Thus our results suggest that domestic fermented black tea (Bosung, Jeju, and Hadong) are effective antioxidants in RAW 264.7 cells.