• The Korean Journal of Ecology
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• v.20 no.1
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• pp.1-8
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• 1997

This study was conducted to investigate the distributions of the native and introduced dandelins in the western Kyonggido area and to determine the environmental factor influencing distribution of dandelions. One hundered and thirty seven study sites were randomly selected along roadsides in urban areas, arable lands, apartment areas and industry regions, and vegetation, dandelion's seed characters and soil acidity were sureyed. Throughout the areas the introduced dandelions were more widely distributed than the native ones. The native dandelions were scarcely distributed in the developed areas and roadsides. The introduced dandelions were dominantly distributed in the new environments where soils were alkalized by the trban development, road pavement, and construction of new buildings, while the native ones were mostly distributed in the rural area with weakly acid soil. The seed production of the introduced ones were two times more than that of the native ones. The seed of the introduced ones were lighter than that of the native ones. The introduced ones yield seeds more than four times a year. These results suggested the urbanization and the seed characters to bet the two dominant factors influencing the distribution of dandelions.

• Korean Journal of Environment and Ecology
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• v.19 no.1
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• pp.31-45
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• 2005

This study was carried out to investigate the vascular plants of the construct-reserved sites of ecological forests in Deokdong-ri, Baekwoon-myeon, Jecheon-si, and Chungcheongbuk-do, Korea and the period was from March to October, 2004. The results of surveying the vascular plants were recorded as 371 taxa; 83 families, 238 genera, 324 species, 44 varieties and 3 forma. There were 4 species of rare and endangered plants as designated by Korea Forest Service; Eranthis stellata, Paeonia japonica, Viola albida and Scopolia japonica. There were 9 species of Koreanendemic plants Pseudostellaria coreana, Melandryum seoulense, Clematis trichotoma, Deutzia coreana, Spiraea prunifolia for. simpliciflora, Ajuga spectabilis, Weigela subsessilis, Cirsium setidens and Saussurea nutans. Ten species of naturalized plants were observed Panicum dichotomiflorum, Rumex crispus, Amaranthus retroflexus, Lepidium apetalum, Trifolium repens, Oenothera Jamayckiana, Erigeron annuus, Erigeron canadensis, Bidens frondosa and Taraxacum officinale. In the results of analysis by floristic region, the specific plants were summarized as 52 taxa; 30 families, 47 genera, 49 species and 3 varieties.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.315-318
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• 2014

재난은 사전 경고도 없이 빈번하게 발생하는 자연 재해, 교통사고, 그리고 범죄와 같은 사회적 재난이다. 재난을 충분히 대비 할 수 있고 피해를 줄일 수 있는 한 방안으로 통신기술 연구가 활발히 진행되고 있다. 허버트 윌리엄 하인리히는, 큰 사고는 우연히 또는 어느 순간 갑작스럽게 발생하는 것이 아니라 그 이전에 반드시 경미한 사고들이 반복되는 과정 속에서 발생한다는 것을 실증적으로 밝힌 것으로, 큰 사고가 일어나기 전 일정 기간 동안 여러 번의 경고성 징후와 전조들이 있다는 사실을 입증하였다. 때문에 언제 어디서나 일어날지 예상 할 수 없는 상황에서 재난 재해를 대비하기 위한 방안이 필요하다. 본 논문에서는 사용자가 특정 건물이나 위치에서 재난감지장치 센서를 배치하여 현재 상황을 정보를 표현하고, 임베디드 상황 정보 분석과 해석을 통해 구현 하고자 한다.

• Journal of Life Science
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• v.31 no.6
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• pp.543-549
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• 2021

Approximately 10% of all angiosperms belong to the Asteraceae family. Plant species belonging to this family have traditionally been used as medicinal plants in the Korean Peninsula. We investigated the antioxidant activity of seed extracts from 14 species belonging to the Asteraceae family. Seeds with ≥ 90% percentage of filled seed and ≥ 50% final germination were used. The total phenolic content was the highest in Dendranthema zawadskii var. tenuisectum (13.5 mg of gallic acid equivalents (GAEs)/g seeds), followed by Dendranthema zawadskii var. latilobum (11.8 mg of GAEs/g seeds), and Callistephus chinensis (11.0 mg of GAEs/g seeds). The total flavonoid content was highest in C. chinensis (9.8 mg of quercetin equivalents (QEs)/g seeds), followed by D. zawadskii var. tenuisectum (7.2 mg of QEs/g seeds) and Taraxacum officinale (6.3 mg of QEs/g seeds). Our results showed that 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging activity was highest in D. zawadskii var. tenuisectum (57.4 ㎍/ml), followed by T. officinale (59.1 ㎍/ml) and D. zawadskii var. latilobum (65.0 ㎍/ml), with a half maximal inhibitory concentration (IC₅₀) of DPPH scavenging activity. Furthermore, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity was highest in C. chinensis (26.2 ㎍/ml), followed by D. zawadskii var. tenuisectum (38.4 ㎍/ml), T. officinale (40.2 ㎍/ml), with a half maximal inhibitory concentration (IC₅₀) of ABTS scavenging activity. Based on a cluster analysis according to the antioxidant activity, the 14 species were classified into five groups, with group 4 having the highest antioxidant activity and group 0 having the lowest antioxidant activity. D. zawadskii var. latilobum, D. zawadskii var. tenuisectum, T. officinale, and C. chinensis belonging to groups 3 and 4, exhibited high phenolic content and antioxidant activity and can be considered potent plant-derived natural antioxidants.

• Korean Journal of Plant Resources
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• v.20 no.2
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• pp.155-167
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• 2007

This study was carried out to offer the raw data for environment conservation by surveying and analysing the flora distributed over Jinhae-si, and to present the frame for preparing the method of obtaining the bioresource in approach to plant resource. The period of survey was from May, 2005 to June, 2006, and the routes were A(Mt. Jangbok), B(Ahnmin hill) C(Mt. Hwa). The results as follows. The vascular plants were summarized as 447 taxa; 98 families, 286 genera, 394 species, 49 varieties, and 4 forma. The rare plants designated by Korea Forest Service were 2 taxa; Tricyrtis dilatata and Viola albida. The Korean endemic plants were 11 taxa; Tricyrtis dilatata, Salix caprea, Carpinus coreana, Melandryum seoulense, Clematis trichotoma, Thalictrum uchiyamai, Deutzia coreana, Spiraea prunifolia for. simpliciflora, Lespedeza maritima, Forsythia koreana and Weigela subsessilis.

• Korean Journal of Plant Resources
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• v.21 no.2
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• pp.162-170
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• 2008

The purpose of this study was to suggest the raw data on establishing the domestic wetland conservation plan. The results of this study were as follows. The vascular plants were summarized as 201 taxa in Ahnshim wetland; 57 families, 154 genera, 179 species and 22 varieties. The rare and endangered plant designated by Korea Forest Service was Hydorcharis dubia. In the wetland plants, the emerged plants were showed Typha angustata, Beckmannia syzigachne, Zizania latifolia, Phragmites communis, Persicaria thunbergii, Oenanthe javanica and Veronica undulata, and the submerged plants were Potamogeton crispus, Vallisneria asiatica, Hydrilla verticillata, Ceratophyllum demersum and Myriophyllum verticillatum. And the floating leaved plants were confirmed Potamogeton distinctus, Hydrocharis dubia, Nelumbo nucifera and Nymphoides peltata, and the floating plants were Salvinia natans, Spirodela polyrhiza and Lemna paucicostata. The naturalized plants were 33 taxa; Avena fatua, Dactylis glomerata, Rumex crispus, Rumex conglomeratus, Amaranthus retroflexus, Lepidium apetalum, Tlaspi arvense, Descurainia pinnata, Potentilla supina, Vicia villosa, Robinia pseruo-acacia, Amorpha fruticosa, Trifolium repens, Medicago sativa, Ailanthus altissima, Euphorbia supina, Oenothera lamarckiana, Quamoclit angulata, Ipomoea purpurea, Solanum nigrum, Veronica perisca, Helianthus tuberosus, Ambrosia artemisifolia var. elatior, Xanthium strumarium, Erigeron annuus, Erigeron canadensis, Conyza sumatrensis, Senecio vulgaris, Bidens frondosa, Tagetes minuta, Taraxacum officinale, Taraxacum laevigatum and Sonchus oleraceus.

• Sijohaknonchong
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• v.30
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• pp.53-90
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• 2009

This study discusses the aspects of Korean-American Sjjo writers' consciousness of sijo and its significance, focusing primarily on the Sijo-Anthologies of Korean-American authors, "The Moon of the Desert" (1989), "The Dandelion of the Desert" (1994), and The Stars of the Desert" (1996) published by the Sijo Society of America. For this purpose, I thoroughly examined "Notes of Writing Sijo' attached to the authors' works and some other sijos added at the end of the paper. They started writing sijos quite early. Sijo has been recognized as a typical traditional genre of literature, and even foreigners came to write them in English. The following is the summary of the view on sijo propounded by Korean-American authors. Firstly, they follow traditional view on the theory of sijo in terms of its nature and utility, and at the same time they emphasize the utility of katharsis through self expressions. Secondly, their recognition of the value of sijo boils down to its formal patterns. Lastly, they develop the idea of national literature through their significance of writing sijos. They think that they can contribute to the development of national literature as well as the expression of patriotism through writing sijos. Therefore, they recognize themselves as spreaders of Korean culture to the local residents, and as the main stream enhancing the status of Korean culture through the competition with other nations.

• Korean Journal of Environment and Ecology
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• v.17 no.2
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• pp.112-122
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• 2003

This study was carried out to offer the raw data for the conservation of plant ecosystem in Chungcheongbuk-do with systematic grasping the vascular plant in Mt. Midong and to establish the accurate countermeasure of conservation on the rare species as well as to restore their habitats. The vascular plant species in Mt. Midong were summarized as 303 taxa; 81 families, 215 genus, 262 species, 38 varieties and 3 forms. The rare plants designated by Korea Forestry Service were two taxa; Polygonatum stenophyllum, Hylomecon hylomeconoides. The nine taxa were recorded in the surveyed sites as the endemic plants; Melandryum seoulense, Hylomecon hylomeconoides, Spiraea prunifolia for. simpliciflora, Filipendula palmata var. glabra, Ajuga spectabilis, Weigela subsessilis, Lonicera coreana, Cirsium setidens and Saussurea seoulensis. And the naturalized plants were twelve taxa; Rumex crispus, Lepidium apetalum, Robinia pseudo-acacia, Tyifolium pratense, Trifolium repens, Hibiscus trionum, Oenothera odorata, Ambrosia artemisifolia var. elatior, Erigeron annuus, Erigeron canadensis, Taraxacum officinale and Sonchus oleraceus.

• Journal of Forest and Environmental Science
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• v.15 no.1
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• pp.44-64
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• 1999

The flora of vascular plants investigated in Mt. Hyangro-Bong was 450 taxa belonging to 86 families, 254 genera, 393 species, 2 subspecies, 51 varieties, 4 formae. Among the investigated vascular plants, Korean endemic plants (Carex okamotoi, Salix koriyanagi, Clematis chisanensis, Aconitum pseudo-laeve var. erectum, Viola diamantiaca, Sanguisorba hakusanensis, Vicia venosissima, Patrinia saniculaefolia, Hanabusaya asiatica, H. asiatica for. alba etc.) were 23 taxa; rare and endangered plants(Disporum ovale, Lilium distichum, Trillium kamtschaticum, Gastrodia elata. Clematis chisanensis, Rodgersia podophylla, Rosa marretii, Viola diamantiaca, Syringa wolfii, Hanabusaya asiatica etc.) were 17 taxa; naturalized plants(Dactylis glomerata. Poa pratensis, Rumex acetosella, Gypsophila oldhamiana, Lepidium apetalum, Oenothera odorata, Aster pilosus, Carduus crispus, Erigeron annuus, Taraxacum officinale etc.) were 14 taxa.

• Korean Journal of Plant Resources
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• v.22 no.1
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• pp.26-30
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• 2009

Daucosterol and naphthalene glycoside were isolated from the seeds of Cassia mimosoides var. nomame Makino. The isolated compounds were identified by spectral means including 1D, 2D-NMR and FAB-MS experiments. Daucosterol was characterized as ${\beta}$-sitosterol-3-O-${\beta}$-D-glucoside and naphthalene glucoside was done as 2-acetyl-3-methyl-6-methoxynaphthalene-1,8-diol 8-O-glucosyl-(1${\rightarrow}$6)-glucoside. These compounds were isolated for the first time from Cassia mimosoides var. nomame Makino.