• Journal of Marine Life Science
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• v.3 no.2
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• pp.67-73
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• 2018

This study was conducted to investigate the influence of environmental factors such as water temperature, salinity, rearing density and feeding amount on the survival and development of larvae in surf clam, Tresus keenae. As a result of this study, the optimum conditions of larval rearing were as follows. The optimum range of water temperature is 20℃ to 24℃, the optimum salinity is 30 psu, the optimum rearing density is 5 ind./ml and the supply of mixed feed organism for larva rearing such as Isochrysis galbana, Chaetoceros simplex and Tetraselmis suecica is 10×10⁴ cells/ml. The results of this study suggest that the optimum conditions of environmental factors in larval rearing of Tresus keenae contribute to productivity improvement through rapid growth and high survival.

• Journal of the Daesoon Academy of Sciences
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• v.19
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• pp.47-80
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• 2005

고구려는 지리적인 조건으로 말미암아 삼국 가운데 가장 먼저 불교를 수용할 수 있었으며 5세기부터 7세기사이에 고구려의 불교문화가 백제, 신라와 고대 일본에 전해져 동아시아 전체에 보급되었다. 불교 전래 당시부터 고구려 왕실이 열성적으로 불교를 신봉한 일은 충분히 주목할 가치가 있는데, 왜냐하면 중앙 집권적 국가로 전환을 시도하던 때 마침 불교의 사회적 정치적 가치를 인식하게 되었기 때문이다. 불교와 왕권이 상호 관계를 강화하는 쪽으로 힘을 결집시켰는데, 왕실은 불교에 대해서 후한 지원을 아끼지 않았으며, 불교는 전륜성왕, 혹은 우주를 지배하는 자, 미륵 그리고 보살 등 모티브의 상징적 중요성을 통치자에게까지 확대시킴으로써 통치자의 지위를 신성시하는 이념적 기틀을 제공하였던 것이다. 이런 맥락에서 볼 때 불교를 받아들인 후에 세워진 비문들이 왕명 앞에 성(聖) 자를 붙여 왕의 지위를 신성화하는 의미를 나타내고 있다는 점은 우연의 일치가 아니다. 4세기말 국가 차원에서 불교를 수용한 고구려와 6세기초 법흥왕 당시의 신라는 시대적인 차이가 있으나, 국가 발전의 같은 단계에 서있었기 때문에 이 두 나라의 초기 불교 정책에 많은 유사점을 찾을 수 있다 고구려에서 거칠부와 더불어 신라로 넘어 온 혜량법사가 진흥왕 12년에 처음 개최된 백고좌강회는 《인왕경》에 입각한 것이며, 이 법회가 신라인의 사상적 통합과 진흥왕의 위업을 향상하는 데 기여하였다고 여겨진다. 그리고 진흥왕이 말년에 승복을 입고 법운이라는 법호를 택했는데 여기서 주목할만한 것은 법운(法雲)이 《십지경》에서 말하는 보살의 수행 최종 단계 그것에서 따온 것이며, 《십지경》은 이미 고구려에 익히 알려졌을 것이었다.신라 화랑이 미륵의 현현으로 여겨졌다 함은 일찍부터 지적되어 온 것입니다만 이 논문에서, 그것은 북중국에서 5·6세기경 유행한 그리고 소미륵으로 간주된 월광동자 (月光童子)신앙이 고구려를 통해 남하여 화랑의 사상적인 바탕이 됐다는 것으로 이해하였다. 그 증거로 《수라비구월광동자경》에 나타난 용어와 고대 한반도의 지명을 들 수 있는데 이 경은 고구려의 선인(仙人) 사상 및 신라의 화랑을 간접적으로 직결시킨다는 점도 염두 할 필요가 있다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.9
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• pp.1205-1210
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• 2012

This study investigated the anti-inflammatory effects of Ligustrum ovalifolium H. (LOH) leaf extracts on RAW264.7 macrophages. Cell toxicity was determined by MTT assay. We evaluated the anti-inflammatory effects of LOH extracts by measuring nitric oxide (NO), reactive oxygen species (ROS), inducible NOS (iNOS) production, and cyclooxygenase-2 (COX-2) expression by Western blotting. LOH ethanolic extracts (0.05, 0.1, and 0.2 mg/mL) significantly suppressed LPS-stimulated production of NO. The intracellular ROS level also significantly decreased. LOH ethanolic extracts reduced the expression of iNOS and COX-2 proteins. The present results show that LOH ethanol extract has potent anti-inflammatory effects on RAW264.7 macrophages. These results also suggest that the anti-inflammatory effects of LOH extracts may be related to the inhibition of LPS-stimulated ROS and NO production. Therefore, ethanolic extracts of LOH leaves may be utilized as a good source of functional foods for protection against inflammatory diseases.

• Korean Journal of Environmental Agriculture
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• v.21 no.1
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• pp.50-56
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• 2002

This experiment was carried out to obtain some information about overwintering, physiological and ecological characteristics of apple snails. Another purpose of this experiment was to characterize an appetite for rice plants by apple snails and to elucidate their choice of fresh green ones (vegetables, some other crops, weeds in rice fields). The freshwater snails were found with higher population at sites abundant organic compounds such as plant debris and at regions with high temperature. They also prefer calcium-rich water. This is a naturally occurring process. Apple snails were exceptionally veil-adapted to the south regions of Korea, especially Janghang, Jangseong and Haenam, even if the temperature of winter season is cold below 0$^{\circ}C$. Apple snails were not very selective in their food choice and eat almost everything available in their environment. A snail have something called a radula in its mouth for grinding up its food. A apple snail also chews on fruits and young succulent plant barks. In case of reproduction. apple snails deposit about 157$\sim$784 (average of 321 eggs) milky white to pale orange colored eggs above the waterline. In approximately every 22.4 seconds a new egg appears. The total time needed to deposit a egg mass varies from 58 minutes$\sim$4 hours 13 minutes. Apple snails reproduct actively from May to June and from September to October. An appetite of apple snails for rice plants was the different depending on their size and glowing stage for rice plants. Apple snails had a great appetite of rice plants as well as dropwort, tomato, cabbage, radish, aquatic plants etc. They preferred to eat young rice plants and drastically quit eating rice plants of over 40 cm in height. Thus considering the food preference of apple snail for various plants including rice, they were thought to be a potentially strong predator in fields, especially, at regions with warmer winter.

• Animal Systematics, Evolution and Diversity
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• v.21 no.2
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• pp.129-136
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• 2005

During the expedition of Uileunsdo Islands, Korea in September 2-4, 2004, a total of seven species were recognized. Of these, one species Amynthas dageletensis sp. nov. is described as new to science. Amynthas degeletensis sp. nov. lacks spermathecal pore, spermathecae, prostates, and male pore. These characteristics are systematically important and unique to the species among Korean members of Amynthas. Description of the new species is provided, including illustrations of ventral view and male pore region.

• Journal of Korea Game Society
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• v.20 no.2
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• pp.35-44
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• 2020

This study proposes the method for converging Buddhist Worldview into games. The Rogue-like game "Dungeed" and "Nectar Ritual Painting" were selected for analysis. Next, the characteristics of the Buddhist worldview in Nectar Ritual Painting and the Rogue-like game Dungeed were compared and analyzed. As a result, this study proposed game elements of Rogue-like that analyzed in the characteristics of Buddhist world view. In the future, we will examine the expandability of the game through the Buddhist Worldview.

• Proceedings of the Korea Contents Association Conference
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• 2012.05a
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• pp.225-226
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• 2012

산수실경 뮤지컬 왕의 나라는 지역문화콘텐츠 경쟁력과 가능성 확보를 위한 문화콘텐츠 제작사업이다. 기존 문화자원 재생(Regeneration)을 통한 장소성 콘텐츠 제작에 따른 일자리 창출과 문화산업화를 위하여 지역모델사업으로 기획되었다. 있는 이야기, 있는 사람으로 제작된 왕의 나라 공연결과는 약 300여명의 문화적 일자리 창출과 지역경제 활성화, 48,000명의 관람객 등 지역문화콘텐츠의 가능성을 엿 본 작품이다. 향후 역사, 인물, 스토리를 중심으로 한 산수실경 뮤지컬 왕의 나라는 문화관광산업 발전에 기여하는 경상북도 대표 문화콘텐츠 아이콘이 되고자 한다.

• Conservation Science in Museum
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• v.4
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• pp.33-39
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• 2003

We examined the causes of the damage of a Joseon Buddhist painting, "Ten Kings of the Hell", for which we had performed conservation treatment while preparing for the special exhibition entitled "A Journey into the Joseon Buddhist Paintings", presented by the National Museum of Korea. For the parts that could not be easily observed by naked eyes, we examined it with microscopes, X-rays and infrared rays. Hereby we introduced the result of the scientific examination performed prior to the conservation treatment, and arranged its process for the "Ten Kings of the Hell".

• Korean journal of applied entomology
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• v.46 no.1 s.145
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• pp.109-115
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• 2007

This study was carried out to determine occurrence and damage of golden apple snail, Pomacea canaliculata on water seeding area in Jeonnam province. The density of golden apple snail maintained hlgh until October 2003, but quickly decreased from November. They overwintered only in a portion of the water canals but could not find in dried paddy field. They reproduced from May and June in the canal water and paddy field, respectively. Feeding time of golden apple snail on rice seedlings was 235.2 seconds, feeding length of that was 8.4cm. When golden apple snail fed rice seedlings, the stem remain only 2.5cm from areal part which could not recover. The more density of golden apple snail, the fester feeding rate. Density and number of eggs laid of golden apple snail after overwintering was higher on bank around of paddy field than on middle of that. The percent of shell size after over wintering was higher in small (below 25mm) than big (over 36mm). But in case of Boseong area, the slze was reverse because the soil has soft mud. The survival rate of overwintering golden apple snail was lower than that of breeding. They did not move when the temperature changed rapidly, but the temperature increased they start to move. They dead almost below $-3^{\circ}C$. The damage of rice by golden apple snail in the direct water seeding was 20%. In machine transplanting, rice damaged only fore-end of leaf and recovered subsequently. When golden apple snail release in direct water seeding field, the percent of damage was 5.6% in immediately release plot. The later release, the lower damage.

• Korean Journal of Weed Science
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• v.30 no.3
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• pp.272-281
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• 2010

The objective of this research was to find out the weed management techniques in environment-friendly rice paddy fields through the study on herbicidal effects and problems of various organic materials. This experiment was conducted under different conditions of weed species and weed densities in environment-friendly rice paddy fields. There was no difference in weedy efficacy on golden apple snail (GAS), paper mulching (PM), and machine weeding (MW) between low and high weed densities. However, the effect of weed control in rice bran (RB) and effective microorganism (EM) + molasses was higher in high weed density than in low weed density. In general, the effect of weed control as affected by various organic materials was in the order of GAS (97-100%) > PM (93-98%) > RB (15-80%) > EM (7-31%). GAS provided excellent control of all weed species tested except for Persicaria hydropiper. PM gave acceptable control of the weed species except for Echinochloa crus-galli, Ludwigia prostrata, and Eleocharis kuroguwai. However, MW gave fair control (70% biomass reduction) of all weed species tested. BR followed by MW or EM followed by MW treatments had similar effect on weed control compared to each treatment alone. However, BR followed by GAS or EM followed by GAS provided 100% control of weed species tested. The level of rice foliar injury caused by various organic materials was in the order of GAS and MW (10-20%) > RB (10-15%) > PM and EM (5-7%). Typical symptoms of organic materials are wilting, inhibition of growth, missing hill, and reduction of tiller. Cost for weed control of GAS, RB, EM, and PM were 2.1, 3.1, 2.3, and 13.2 times higher than that of the herbicide. These data indicate that GAS was the best method for weed management in environmentfriendly rice paddy fields. Further study is required to elucidate the mechanisms underlying the rice injury as affected by GAS.