• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.117-117
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• 2022

표고(Lentinula edodes (Berk.))는 담자균강 주름버섯목 느타리과 잣버섯속에 속하는 식용버섯으로 봄에서 가을에 걸쳐 주로 재배하며, 예부터 식용 및 약용으로 널리 이용되어져 왔다. 우리나라를 비롯하여 일본, 중국 등의 동남아시아 지역뿐만 아니라 최근에는 미국, 캐나다 및 네덜란드 등의 서구 나라에서도 관심이 높으며, 전 세계적으로 중요한 식용 버섯으로써 주목을 받고 있다. 표고는 혈중 콜레스테롤 수준의 감소, 항당뇨, 혈압조절, 면역증강, 간 보호 및 비만 억제 등의 다양한 생리활성이 밝혀져 있어 현대인의 식생활에서 수요가 더욱 증가되고 있는 추세에 있다. 버섯의 생육은 크게 균사의 생장과 자실체의 생육으로 구분되는데, 표고 균사의 배양 기간이 86~123일 정도 소요되며, 자실체의 생육 기간은 10~20일 정도로, 균사의 배양 기간이 훨씬 긴 것으로 나타났다. 버섯의 생육 단계에서 영양, 생식, 생장은 모두 수분으로부터 비롯되며, 생육 조건, 조도, 환기 정도 등에 따라 버섯의 품질은 상당한 차이를 보일 수 있다. 일반적으로 봄에 수확한 표고는 대가 짧고 단단하며 감칠맛이 풍부하며, 가을에 수확한 표고는 대가 길고 육질이 부드럽고 비교적 강수량이 높아 수분함량이 높은 것으로 알려져 있다. 이러한 현상은 표고의 수확 시기에 따라 기후, 온도, 강수량 등의 차이가 이화학적 특성에 큰 영향을 미치는 것으로 생각되어, 본 연구에서는 봄과 가을에 각각 표고를 수확하여 이화학적 특성 및 기능성성분을 비교하였다. 분석결과 가을에 수확한 표고가 봄에 수확한 표고에 비해 수분, β-glucan, ergosterol 그리고 ergothioneine 함량이 유의적으로 높게 나타나, 소재 개발 시에 경제적 경쟁력을 고려했을 때 가을에 수확한 표고 활용이 유리할 것으로 고려된다.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.451-456
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• 2024

This study aims to diagnose the military manpower shortage problem caused by the rapid decline in fertility and aging population in South Korea and explore countermeasures. To this end, it analyzes the trends of demographic changes and military manpower supply and demand forecasts in Korea, and evaluates major alternatives such as expanding female soldiers, introducing a voluntary recruitment system, and adopting advanced weapons. It also seeks to derive implications through case studies of military manpower policies in major countries such as the United States, Japan, and Germany. The results show that in order to secure sustainable manpower for the Korean military, it is necessary to increase the proportion of female soldiers, review the voluntary recruitment system from a long-term perspective, minimize the power gap due to troop reduction, strengthen incentives for skilled manpower, and draw social consensus on improving the military service system and defense reform. This study is expected to contribute to the establishment of future military manpower policies in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.2
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• pp.219-223
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• 2006

In this paper, the criteria of the lateral displacement in soft soil due to embankment were evaluated. The lateral displacement was measured at a pier structure in a new harbor construction site, and the measurement was compared with the criteria. The results by the measurement such as the critical pressure causing lateral movement in terms of undrained strength, the lateral movement index by Japan Highway Co., the lateral displacement index by Japan Construction Ministry, the modified index by Korean Highway Co. were estimated to be lower than the respective index values.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.37 no.1
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• pp.41-55
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• 2019

The purpose of this study is to present the basic data for conservation and management of traditional landscape and ecological environment by surveying and analysing the vascular plants distributed in Gwnagneung, a royal tomb of the Joseon Dynasty. The results are as follows. The numbers of vascular plants were summarized as 446 taxa including 97 families, 274 genera, 384 species, 4 subspecies, 49 varieties and 9 forms. The planting species were 34 taxa including Ginkgo biloba L., Pinus koraiensis Siebold ＆ Zucc., Taxus cuspidata Siebold ＆ Zucc. and so forth. Exotic species such as Pterocarya stenoptera DC. and Magnolia obovata Thunb. need to be remove for traditional landscape management. The rare plants were 7 taxa including 2 taxa of CR(critically endangered), 2 taxa of VU(vulnerable) and 3 taxa of LC(least concerned). The Korean endemic plants were 8 taxa including Pseudostellaria coreana (Nakai) Ohwi, Chrysosplenium pilosum var. fulvum (N.Terracc.) Hara, Philadelphus schrenkii Rupr., Indigofera koreana Ohwi, Paulownia coreana Uyeki(planting), Weigela subsessilis (Nakai) L.H.Bailey, Aster koraiensis Nakai(planting) and Hosta minor (Baker) Nakai(planting). The specific plants by floristic region were 45 taxa including 2 taxa of grade V, 12 taxa of grade III, 9 taxa of grade II and 22 taxa of grade I. The naturalized plants were 25 taxa including Fallopia dumetorum (L.) Holub, Chenopodium ficifolium Smith, Amorpha fruticosa L., Galinsoga ciliata (Raf.) S.F.Blake and so forth. The target plants adaptable to climate change were 9 taxa including 1 taxon of endemic plant and 8 taxa of northern plants.

• 한국노년학
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• v.31 no.2
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• pp.303-315
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• 2011

The purpose of this study was to investigate effect of resistance training on BMD and bone metabolism related markers in aging rats. Thirty male Spraugue-Daweley rats were divided into sedentary (CON; n=10 ) non-load resistance trained(NLRTG; n=10), and load resistance trained(LRTG; n=10) groups at the age of 64 weeks. The rats in the resistance training groups((NLRTG and LRTG) performed the tower climbing exercise 4 times a week. The LRTG groups were conditioned to climb a vertical ladder with weights appended to their tail 4 days/wk for 12 wks. After 12 weeks of exercise, serum osteocalcin, bone mineral density (BMD), breaking force, ash, Ca, and P in the femur were measured. After training, serum osteocalcin (OC) was significantly (p < 0.05) higher in both LRTG and NLRTG when compared to Control. Right femur BMD was significantly (p < 0.05) greater for LRTG when compared to both NLRTG and Control with no significant difference between NLRTG and Conrtol. The breaking force of femur was significantly (p < 0.05) greater for LRTG and NLRTG when compared to Control. The Ash, Ca, content of femur were significantly increased in resistance training groups than control group. These results suggest that the increase in bone mineral density induced by resistance training is mediated by changes in bone microarchitecture as well as training intensity and osteocalcin.

• Korean Journal of Plant Taxonomy
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• v.31 no.3
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• pp.283-309
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• 2001

Acer pictum complex (A. pictum Thunb. ex Murray with varieties, A. okamotoanum Nakai, A. truncatum Bunge) in eastern Asia causes frequent difficulty in identification. One hundred twenty five specimens from A. pictum complex of China, Korea and Japan and A. cappadocicum var. sinicum of China were compared to investigate patterns of intra- and interspecific variation and to evaluate a recognition of several species as well as many varieties using 22 characters for morphometric analysis. The first three PCA accounted for 59% of the total variance. No strong discontinuities existed among taxa with respect to fruit and leaf characters. Much overlap among all taxa occurred the central region of the scatter diagram. Many characters appeared to show some clinal variation with changes from east of China to Japan through Korea. This was true not only when all species as considered as a single taxon, but when characters of individual taxa were compared with geography. As one considers a path from the western part of the ranges to areas to the east, the leaves become larger in most respects and become increasingly many lobed (five to seven or nine). In general, there was a tendency toward larger nutlet with smaller wing in the area toward northeast of China (=A. truncatum), while in the east of ranges (Island Ullung-do), plants were larger with respect to characters of fruit and leaves (=A. okamotoanum). The morphological differentiation between A. okamotoanum and Japanese and Korean individuals of A. pictum was not considered sufficient to warrant recognition of either specific or varietal status and should be treated as con specific under A. pictum var. mono. Since the lectotype of Acer pictum had minute hairs uniformly on the under surface of leaves(A. pictum var. pictum), the glabrous type of A. pictum was called A. pictum var. mono as Ohahsi suggested. The univaraite analysis (the mean and maximum/minium of nutlet size and wing/nutlet length ratio) indicated geographical differentiation of northeastern populations, A. truncatum, was distinctive, but Korean individuals of A. truncatum showed an affinity between Chinese individuals of A. truncatum and Korean individuals of A. Pictum var. mono. The current results, together with qualitative character, trunk features, justify subspecific status for this taxon. The previous varieties of A. mono in Korea were indistinguishable from typical form of A. Pictum var. mono on the basis of the wing angle and nutlet size, rejecting continued recognition of these taxa as distinctive varieties. Therefore, it is recommended that only one polymorphic species of A. pictum be recognized in addition to three varieties.

• Korean Journal of Medicinal Crop Science
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• v.8 no.2
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• pp.102-108
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• 2000

Morphological characteristics of nine Epimedium spp was analyzed on the basis of six morphological characters. To analyse the genetic relationship among Epimedium spp., polymerase chain reaction (PCR) was performed with total genomic DNA of 17 Epimedium spp. by using random 8 primers. The genetic diversity and genetic distance among nine Korean collections, seven Japanese and one China collection were used to generate a dendrogram showing phylogenie relationship. Seventeen Epimedium spp were classified into two groups of group I and II, since they were divided into two major groups at the similarity coefficients value of 0.65. In addition, one of the two group, group I was divided into three sub-groups including Epimedium koreanum, Chul-won collections 1, 2, and 3, Yanggu, Hongchon, Hwachun, Chunchon, China, Maehwa (Japanese), E. diphyllum and E. violaceum (Japanese), while group II included Chulwon collection 4 and 5 and Japanese collection. The samples collected at Chulwon district showed close similarity with Japanese collection. Similarity indexes between collection and genetic relationship were related at the levels ranging from 0.6 to 0.9.

• Journal of Conservation Science
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• v.28 no.1
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• pp.39-52
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• 2012

The Usuki Stone Buddha Statues in Oita are consisted of 60 Buddhas which represent of Japan carved on the rock-cliff in the 12 to 14th centuries. The basement rock of the statues is dark gray welded lapilli tuff that containing the Aso-4 pyroclastic rock group. Deterioration maps for the Hoki I and the Furuzono Buddha Statues group show multi-directional fissures on the Cakra, and sheeting-off zone at the margin of uprising water. Deterioration rate of the Hoki I group was calculated fissure about 121 in number, 19% of sheeting-off zone and 51% of biological weathering in surface of area. And the Furuzono group was also evaluated as about 48 of fissures in number, 24% of sheeting-off zone and 41% biological weathering. The slope stability assessment results, the Hoki I developed discontinuous planes has possibility of planar, toppling and wedge failures in all caves. Ultrasonic velocity of the Aizen-myooh (basement rock) ranges from 1,520 to 2,794 (average 2,298m/s). And pedestal of Amita-yeorae which has been replaced by new fresh rock is measured as 3,242 to 4,141 (average 3,813m/s). Therefore, we establish of planing conservation treatment and reinforcement methods to fissure, cavity, sheeting-off zone in the Buddha surface.

• Journal of Korean Society of Forest Science
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• v.108 no.1
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• pp.127-132
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• 2019

This study aimed to investigate the differences in habitat environment and characteristics of small rodent populations with time elapse after thinning in Japanese larch (Larix kaempferi) plantations, Mt. Janggun, Gyeongbuk Province, South Korea. We found that there were significant differences in habitat environment, number of tree, shrub stems, coverage of overstory, midstory, rock and number of coarse woody debris (CWD) between thinned and unthinned forest stands. We captured four small rodent species. Total number of captured small rodent were higher in thinned stands. Male-to-female ratio of Apodemus agrarius, and A. peninsulae were both the highest in forest stand 3 year after thinning. The differences in number of captured and sex ratio of small rodents might be related to habitat environment between thinned and unthinned stands. Thus, thinning can provide good habitat for small rodents by developing understory vegetation and increasing CWD in Japanese larch plantations. These results suggest that forest management through maintenance of CWD and induction of midstory and understory vegetation after thinning is necessary to maintain small rodents diversity.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.26-26
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• 2018

본 연구는 DMZ 및 접경지역에서 생육하고 있는 자생식물에 대하여 조사된 연구자료와 국립수목원 DMZ자생식물원에서 자체 조사로 수행된 미조사지역 연구 등을 집대성한 DMZ 일원의 관속식물상 가운데 행정구역상 고성군, 인제군, 양구군, 화천군에 해당하는 동부지역 관속식물의 유용자원 현황에 대하여 기초자료를 제공하고자 하였다. 동부지역은 고성군의 석호들을 포함한 저층습지 및 해안지역과 설악산(1,708m), 점봉산(1,424m), 화악산(1,468m), 등의 고산지대, 대암산(1,304m) 정상부근에 위치한 고층습지 용늪(1,280m)까지 이르는 다양한 생활환경 특성을 포함하고 있다. DMZ일원의 관속식물상 157과 754속 2,047종 12아종 340변종 105품종 총 2,504분류군 중 40.2%인 111과 438속 873종 4아종 113변종 17품종 1,007분류군이 확인된 동부지역 유용식물의 조사 결과 식용식물 순채, 고려엉겅퀴, 병풍쌈 등 336분류군(33.3%), 사료용식물 산뽕나무, 고광나무, 새 등 334분류군(33.1%), 약용식물 주목, 백부자, 삼지구엽초 등 270분류군(26.8%), 관상용식물 제비동자꽃, 백작약, 만병초 등 118분류군(11.7%), 목재용식물 일본잎갈나무, 소나무, 오동나무 등 38분류군(3.7%), 염료용식물 밤나무, 매발톱나무, 갈매나무 등 26분류군(2.5%) 섬유용 식물 개모시풀, 쐐기풀, 참싸리 등 8분류군(0.7%), 산업용식물 굴참나무, 붉나무, 노박덩굴 3분류군(0.2%), 용도를 알지 못하는 식물 280분류군(27.8%)으로 나타났다.