• 한국환경복원기술학회지
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• 제22권2호
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• pp.13-30
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• 2019

The purpose of this study was to investigate changes in vegetation and flora after five years through field surveys data with the Han Gang Watershed Management Committee (2013) data in order to observe natural vegetation changes in the riparian zone of Han River watershed. As a result, the flora of the riparian zone in 2012 were listed total 231 taxa, 66 families, 158 genus, 207 species, 23 varieties, and 1 forms, and in 2017, a total 247 taxa, 74 families, 174 genus, 218 species, 27 varieties, and 2 forms were identified. The number of rare plants decreased from 4 taxa in 2012 to 2 taxa in total in 2017, and the number of endemic plants increased from 1 taxa to 3 taxa. The number of specific plants by floral region decreased from 21 taxa (9.1% of all 231 taxa of flora) in 2012 to 16 taxa (6.5% of all 247 taxa of flora) in 2017. The total number of naturalized plants is analyzed to increase from 35 taxa, a naturalization rate of 15.15% (all 231 taxa of flora) and urbanization index of 11.2% (all 312 taxa of naturalized plants) in 2012 to 44 taxa a naturalization rate of 17.8% (all 231 taxa of flora) and urbanization index of 14.1%(all 312 taxa of naturalized plants) in 2017. The ecosystem disturbance species showed an increase in both number of species and cover degree grades, indicating that the riparian zone changed in a negative direction.

• Molecules and Cells
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• 제25권4호
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• pp.494-503
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• 2008

Many therapeutic glycoproteins have been successfully generated in plants. Plants have advantages regarding practical and economic concerns, and safety of protein production over other existing systems. However, plants are not ideal expression systems for the production of biopharmaceutical proteins, due to the fact that they are incapable of the authentic human N-glycosylation process. The majority of therapeutic proteins are glycoproteins which harbor N-glycans, which are often essential for their stability, folding, and biological activity. Thus, several glyco-engineering strategies have emerged for the tailor-making of N-glycosylation in plants, including glycoprotein subcellular targeting, the inhibition of plant specific glycosyltranferases, or the addition of human specific glycosyltransferases. This article focuses on plant N-glycosylation structure, glycosylation variation in plant cell, plant expression system of glycoproteins, and impact of glycosylation on immunological function. Furthermore, plant glyco-engineering techniques currently being developed to overcome the limitations of plant expression systems in the production of therapeutic glycoproteins will be discussed in this review.

• 한국환경복원기술학회지
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• 제18권4호
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• pp.43-62
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• 2015

The purpose of this study is to offer the raw data for management and conservation of Korean ecosystem by surveying the present conditions and characteristics of flora to select the ecological and landscape conservation area, Ilwolsan(Mt.), Korea. The numbers of flora in Mt. Ilwol were summarized as 582 taxa including 94 families, 307 genera, 508 species, 4 subspecies, 61 varieties and 9 formas. The rare plants were 15 taxa including Clematis koreana, Aristolochia contorta, Daphne pseudomezereum var. koreana, Iris odaesanensis and so forth. The Korean endemic plants were 14 taxa including Pseudostellaria coreana, Philadelphus schrenckii, Galium koreanum, Weigela subsessilis and so forth. The specific plants by floristic region were 29 taxa including Cimicifuga heracleifolia, Parasenecio firmus, Sorbaria sorbifolia var. stellipila, Acer mandshuricum, Syringa reticulata var. mandshurica and so forth. The naturalized plants were 22 taxa including Fallopia dumetorum, Rumex nipponicus, Trifolium repens, Sonchus asper, Phleum pratense and so forth. A set of important area is rare plant, Korean endemic plant, specific plant emerge a lot of areas.

• 한국환경복원기술학회지
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• 제15권1호
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• pp.89-105
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• 2012

This study is carried out to survey and analyse the vascular plants distributed around the Jusan Reservoir, Juwangsan national park. The results are as follows. The numbers of vascular plants were 377 taxa; 85 families, 253 genera, 332 species, 3 subspecies, 37 varieties and 5 forma. The endangered plants designated by Ministry of Environment were 2 taxa; Berchemia berchemiaefolia (Makino) Koidz. and Iris odaesanensis Y.N.Lee. The rare plants designated by Korea Forest Service were 6 taxa; Eranthis stellata Maxim., Aristolochia contorta Bunge, Aristolochia manshuriensis Kom., Berchemia berchemiaefolia (Makino) Koidz., Scopolia japonica Maxim. and Iris odaesanensis Y.N.Lee. The endemic plants were 4 taxa; Carpinus laxiflora (Siebold & Zucc.) Blume, Pseudostellaria coreana (Nakai) Ohwi, Philadelphus schrenkii Rupr. and Weigela subsessilis (Nakai) L.H.Bailey. The specific plants by floristic region were 38 taxa; Juglans mandshurica Maxim., Salix chaenomeloides Kimura, Hylomecon vernalis Maxim., Lonicera praeflorens Batalin, Erythronium japonicum (Baker) Decne., Potentilla dickinsii Franch. & Sav., Celtis aurantiaca Nakai, Anemone reflexa Steph. & Willd., Cimicifuga heracleifolia Kom. and so forth. The naturalized plants were 20 taxa; Fallopia dumetorum (L.) Holub, Chenopoidum album L., Lepidium apetalum Willd., Veronica persica Poir., Conyza canadensis (L.) Cronquist, Taraxacum officinale Weber and so forth.

• 한국정보통신학회논문지
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• 제24권8호
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• pp.993-998
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• 2020

현재 인테리어의 기술은 세계적으로 발전하고 있다. 다양한 연구가 진행됨에 따라 가정 인테리어도 환경 조성을 위해 식물을 활용하는 경우가 증가하고 있다. 그러나 활용되는 식물들의 증가에 비해 해당 식물들의 성질을 제대로 인지하지 못하여 예상치 못한 사고가 발생하고 있다. 이에 따라 특정 식물들의 위험성에 대해 다양한 매체를 통해 알리고 있지만 사고가 지속적으로 발생하고 있다. 이에 본 논문에서는 우리 주변에서 흔하게 접할 수 있는 대중적인 독성 식물을 판별하는 합성곱 신경망 모델 기반의 독성 식물 판별 시스템을 제안하였다. 이를 위해 독성 식물 판별을 진행하기 앞서 네 종류의 모델을 구축하였고 각 모델들을 비교 분석하였다. 분석한 모델들에 대해 높은 정확성을 갖는 합성곱 신경망 모델을 제안하였다. 이를 통하여 독성 식물들을 판별할 수 있으며, 독성 식물로 인한 안전사고를 줄일 수 있다고 사료된다.

• 한국자원식물학회지
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• 제12권4호
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• pp.303-311
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• 1999

본 연구는 1997년 6월부터 1999년 7월까지 영산강집수역에서 수생식물과 특정식물 분포를 조사하였다. 조사된 수생식물은 정수식 19과 52종, 부유식물 5과 7종, 침수식물 7과 12종, 부엽식물 7과 15종으로 총 32과 86종이 나타났으며, 습지식물은 36과 135종으로 조사되었다. 감소추세종인 통발, 자라풀, 끈끈이주걱, 이삭귀개, 땅귀개와 멸종위기종인 순채와 가시연꽃이 확인되었다.

• 한국압력기기공학회 논문집
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• 제16권2호
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• pp.10-17
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• 2020

Securing the integrity of steam generator tubes is an essential requirement for safe operation of nuclear power plants. Therefore, tubes that do not satisfy integrity requirements are no longer usable and must be repaired according to the related requirements. In general, the repair criterion is that the damage depth is more than 40% of the tube wall thickness. However, the plugging limit can be changed and be applied, provided a technical proof is given that integrity can be secured against specific degradation at a specific plants and that approval can be obtained from a regulatory agency. A typical example is alternative repair criteria for defects within the tube sheet or tube support plates. In this paper, a background of establishing the plugging limit for steam generator tubes and changes in maintenance criteria are reviewed as examples.

• 한국물환경학회지
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• 제33권1호
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• pp.63-69
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• 2017

Small size privately owned wastewater treatment plants have been difficult to treat their wasted sludge and maintain steady effluent quality compared with publicly owned wastewater treatment plants. Therefore, this study has focused on treatment efficiency enhancement, specially nitrogen removal efficiency by recycling dewatering filtrate as an alkalinity additive from filter press using $CaCO_3$. As the result, it was found that the optimal mixing ratio between the excess sludge and $CaCO_3$ was 1:2. The major operation parameters such as specific substrate utilization rate, specific nitrification rate, and specific denitrification rate were also improved 64% ($0.048-0.079mg\;BOD_5/mg\;MLVSS{\cdot}day$), 35% ($0.020-0.027mg\;NH_3-N/mg\;MLVSS{\cdot}day$) and 68% ($0.051-0.086mg\;NO_3{^-}-N/mg\;MLVSS{\cdot}day$), respectively, after the adoption of new methods. Therefore, both the problem of sludge treatment at small scale plants and the need for efficiency improvement could be solved.

• 한국환경복원기술학회지
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• 제12권6호
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• pp.18-35
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• 2009

Distribution of vascular plants in Yangyang-gun were investigated 12 times from Apr. to Sept., 2008. In the result of survey, the flora of this area consist of 412 taxa totally; 89 families, 259 genera, 366 species, 5 subspecies, 37 varieties and 4 forms. There were remarkable plants such as 11 taxa of Korean endemic plants, 58 taxa of specific plants which were designated by the Ministry of Environment, 2 taxa of endangered plants of Ministry of Environment, 7 taxa of rare, endangered plants of Korea Forest Service and 28 taxa of afforestation plants and 296 taxa of useful plants. Furthermore, 36 taxa of naturalized plants (8.74%) were also observed in this area. Vegetation of investigated area was conserved well. However, vegetation has been destroyed rapidly due to construction of commercial complex for human recreation such as condominiums and stores. Therefore, it is need to efficient management of the water quality and vegetation by conservation strategies from huge visitors.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.92-93
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• 2003

Chemoprevention refers to the use of agents to inhibit, reverse, or retard tumorigenesis. Numerous phytochemicals present in edible plants have been reported to interfere with a specific stage of the carcinogenic process. Some antioxidative and anti-inflammatory substances derived from dietary or medicinal plants exert chemopreventive properties by targeting intracellular signaling molecules or events.(omitted)