• 한국조경학회지
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• 제27권1호
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• pp.122-131
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• 1999

Indoor environments are usually less than optimal for the growth of ferns, especially in regards to the water condition. These studies were performed to investigate responses involved in causing growth of ferns and presume management plan against the water deficit under indoor conditions. The effect of air humidity and soil moisture on the ferns was examined in Adiantume raddianum and Selaginella kraussiana. Results of experiments are as follows; 1. Under a low humidity condition, having a 25-50% RH. ornamental value of ferns decreased much more than under a 90% RH. Under a low soil moisture, such as sand treatment, ornamental value of ferns also decreased. 2. Leaf chlorophyll content, water content and stomata situations increased as air humidity and soil moisture went up. 3. Even if air humidity and soil water were not enough for ferns growth, the extending of irrigation cycle was helpful. 4. Under extremely low air humidity conditions, some water management, namely, using water holding soil or extending of irrigation cycle was desirable. Other methods of increasing air humidity, including water instruments such as ornamental pools, waterfalls, or fountains, grouping plants together were also helpful. But spraying water on leaves increased injury to ferns growth because of excess evaporation from the leaves. Though these studies, we learn that ferns are susceptible to water condition such as air humidity, soil water and water management. If other environmental factos are maintained with optimal conditions, water condition plays an important role in ferns growth in indoor environments.

• 한국환경과학회지
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• 제31권5호
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• pp.405-411
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• 2022

Production of lettuce under indoor cultivation is highly affected by light intensity. In this study, we used shade cloth (commercial black net) to examine the effect of these condition on growth without an associated yield penalty of container-grown lettuce. Four levels of shading treatments (0%, 35%, 55%, and 75% referred to as Cont., S₃₅, S₅₅, and S₇₅ with respect to Cont.) and two lettuce varieties (red and blue) were evaluated. Variety-specific growth responses were observed with respect to different levels of shading treatments. High growth of red lettuce was occurred in Cont. treatment despite plant height and leaf length being higher than Cont. However, under 35% shading treatment blue lettuce was higher than in control plants. The highest root length was observed 0% shading (Cont.) of both varieties. These results reinforce the idea that blue lettuce is the better leafy vegetable rather than red lettuce for indoor cultivation related to lower light intensity environment conditions.

• 한국조경학회지
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• 제46권2호
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• pp.62-68
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• 2018

본 연구는 실내공간을 모형화한 아크릴챔버($600{\times}800{\times}1,200mm$, $L{\times}W{\times}H$)와 공기정화 장치인 그린바이오필터($495{\times}495{\times}1,000mm$, $L{\times}W{\times}H$)를 아크릴로 제작하여 광량 0, 30, $60{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$의 3수준에 따른 디펜바키아와 스파티필럼의 미세먼지(PM10) 및 초미세먼지(PM1) 제거능과 두식물의 광합성율, 기공전도도, 기공수를 비교하였다. PM10이 $1{\mu}g$이 될 때까지 걸리는 시간에 있어서 디펜바키아는 광의 유무에 따른 차이가 유의하게 나타났으며, 30과 $60{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$에서는 유의적인 차이가 없었다. 스파티필럼은 0과 $30{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$에서는 유의적인 차이가 없었으나, $60{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$에서 유의적인 차이를 보였다. 90분 경과 후, $60{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$에서 스파티필럼의 PM1, PM10 잔존량이 가장 적었으며, 이때 이산화탄소 잔존량도 가장 낮은 것으로 나타났다. 스파티필럼은 $0{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}PPFD$에서도 PM1, PM10 잔존량이 디펜바키아보다 낮은 것으로 나타났다. 두 식물 모두 광량이 높을수록 광합성율이 높게 나타났으며, 기공전도도는 유의적인 차이가 없었다. 스파티필럼은 디펜바키아보다 광합성율과 기공전도가 높았고, 기공수가 많았으며, 잎의 앞 뒷면 모두에서 기공이 관찰되었다. 이러한 식물적 특성으로 인하여 같은 광량에서 스파티필럼의 공기정화 효과가 디펜바키아보다 더 좋았던 것으로 판단된다. 따라서 효과적인 실내 미세먼지 제거를 위해서는 실내광량에 따른 식물의 광합성율과 기공수, 기공의 배치형태 등 식물 각각의 특성을 고려해야 할 것으로 판단된다.

• 한국양식학회지
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• 제7권2호
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• pp.77-87
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• 1994

전복을 육상수조에서 사육하기 위한 먹이 개발을 위하여 육상식물 및 배합사료를 공급하여 대조구인 미역과의 성장도, 생존율 및 먹이효과에 대하여 조사한 결과 1. 배합사료, 미역, 육상식물의 순으로 성장이 빨랐으며 생존율은 큰 차이가 없었다 2. 일간섭식률은 미역과 육상식물이 비슷하였고 배합사료는 이 들의 $30\%$ 수준이었다. 사료전환효율은 미역과 육상식물에 비해 배합사료가 월등히 높았으며 치패 크기가 작을수록 높았다. 3. EFA index, ${{\sum}n9/(20:4n6+20:5n3+22:6n3}$는 건미역이 1.26, 배합사요가 3.64로서 양호 값을 나타냈으나, 깻잎의 경우 127.00으로 나타나 참전복에 유효한 지방산이 거의 없는 것으로 나타났다. 4. 전복 육상수조에서의 사육을 위한 여름철 대체 먹이로는 육상식물보다는 배합안료가 효과적이었다.

• 인간식물환경학회지
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• 제22권3호
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• pp.321-332
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• 2019

The purpose of this study is to investigate the changes of sensory and visual perception of children with intellectual disabilities by conducting psychomotorik (psychomotor activity) in the forest and indoor treatment rooms. Accordingly, this study divided 18 children with intellectual disabilities living in the facility for persons with disabilities located in Seoul into three groups: the experimental group participating in psychomotorik in the forest, the comparative group participating in psychomotorik in the treatment room, and the control group without any treatment at all. The program was conducted for 32 weeks, 4 hours a month. The results showed that psychomotorik promoted the sensory and visual development of children with disabilities. Psychomotorik in the forest showed significant effects on touch and activity level, form constancy and eye-hand coordination. Psychomotorik in the treatment room showed significant improvement in figure-ground with reduced motion. This suggests that psychomotorik in the forest as well as indoors is a positive factor for sensory adaptation reaction and visual development of children with intellectual disabilities.

• 한국산학기술학회논문지
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• 제21권1호
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• pp.538-545
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• 2020

화력발전소의 옥외 저탄장은 주변 지역의 환경오염 문제로 인하여 국내외적으로 옥내 저탄장으로 전환되고 있는 추세이다. 하지만 옥내 저탄장의 경우 실내의 석탄 비산과 유해가스의 발생이 문제가 되고 있다. 본 연구는 옥내 저탄장 내부를 외기의 풍속 및 풍향에 따른 내부 유동장 특성과 환기량을 분석하여 환기 방안을 제시하고자 한다. 옥내 저탄장 내부에서의 실제 유동 측정 정보를 기반으로 하여 CFD 해석을 수행하였다. 외기 풍향이 동풍일 때 풍속이 6 m/s인 경우와 2 m/s인 경우를 비교해본 결과는 6 m/s일 때 Monitor louver로 배출되는 유속이 2 m/s일 때보다 빠르며 재순환 영역이 뚜렷하게 나타났다. 또한 외기 풍향이 서풍일 경우에도 동풍과 경향이 비슷함을 확인하였다. 풍속에 따른 환기량을 확인한 결과는 풍속이 6 m/s인 경우에는 환기 횟수는 13.1회, 2 m/s인 경우에는 4.4회의 환기가 가능하다. 풍속이 2 m/s인 경우에 일반 공장의 시간당 필요 환기 횟수에 미치지 못하여 다소 개선이 필요한 실정이다.

• KIEAE Journal
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• 제12권4호
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• pp.77-82
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• 2012

This study conducted the experiment of reduction of Volatile Organic Compounds(VOCs) and Formaldehyde concentration by Native plants, Fatsia japonica and Ardisia pusilla. The two plants are advantageous in that they are highly available as they grow wild, and being easy to get. Fatsia japonica is a plant of its wide and large leaf diverged 7 or 8 parts, which is thought to have a high effect of air purification. Ardisia pusilla has a smaller leaf than Fatsia japonica, which is characterized by more leaves and beautiful. Field measurements were performed using Fatsia japonica and Ardisia pusilla which were verified as air-purifying plants in Korea. The effect of reducing the concentration of VOCs and Formaldehyde by plant studied in a full scale mock-up model. The dimensions of the two models were equal. The concentration of Benzene, Toluene, Ethylbenzene, Xylene, Stylene, Formaldehyde were monitored, since they were known as most toxic materials. The concentration of VOCs was monitored three hours after the plants were placed and three days after the plants were placed. Field measurements were performed in models where the plants were placed and were not. As a result, they had all an effect of reducing pollution. In all cases of experiment of planting and growing volume, the more planting volume, the more excellent the effect. Toluene was more effective in Fatsia japonica and Ardisia pusilla planted, Formaldehyde was more effective in Fatsia japonica planted respectively. In planting and growing and placing experiment, the placement at sunny spot was more effective than that at scattered growing. When Fatsia japonica was placed at sunny spot, the reduction effect of Formaldehyde was the most excellent, and when Ardisia pusilla was placed at sunny spot, the reduction effect of Toluene was the most effective.

• 비파괴검사학회지
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• 제23권5호
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• pp.480-487
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• 2003

식물의 환경제어 향상을 위하여, 비파괴적인 방법을 사용하여 식물의 신호 특성이 연구되고 있다. 본 연구에서는 속씨식물과 겉씨식물에서 검출되는 음향방출 신호에 미치는 물 스트레스의 영향에 대하여 검토하였다. 낮 시간의 음향방출 신호는 밤 시간 보다 훨씬 많았으며, 낮 시간의 신호는 식물의 물 스트레스에 의해서 발생한 것으로 판단된다. 속씨식물과 겉씨식물은 음향 신호의 강한 주파수 대역이 다르게 나타났으며, 실외에서 검출한 식물의 음향 신호 주파수는 동일한 식물을 사용하여 실내에서 검출한 신호의 주파수 범위와 일치하였다.

• 한국균학회지
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• 제47권3호
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• pp.187-197
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• 2019

Ascomycota is the largest phylum of the Fungi, including approximately 6,600 genera. They are often isolated from soils, indoor air, and freshwater environments, but also from plants as pathogens or endophytes. In this study, four species of Ascomycota (two of Cladosporium and one of each Daldinia and Nigrospora) were collected from the leaves of four woody plants (Camellia japonica, Ginkgo biloba, Quercus sp., Vitis vinifera). Their cultural characteristics were investigated on five different media (PDA, V8A, CMA, MEA, CZA) at 3 days after incubation at $25^{\circ}C$ in darkness. BLASTn search and phylogenetic analysis were performed using the internal transcribed spacer (ITS) rDNA sequences, in addition to tef1 gene sequences for Cladosporium species. Based on the cultural, morphological, and phylogenetic data, the isolates were identified as Cladosporium anthropophilum, Cladosporium pseudocladosporioides, Daldinia eschscholtzii, and Nigrospora chinensis. Previously, some members of Cladosporium and Nigrospora have been recorded as endophytes inhabiting the leaves and stems of various plants, whereas Daldinia eschscholtzii is a wood-inhabiting endophyte or wood-decaying fungus. To our knowledge, this is the first report of these four ascomycetes in Korea.

• 반도체디스플레이기술학회지
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• 제22권4호
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• pp.13-18
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• 2023

A subway station is a prominent multi-purpose facility where the quantitative management of fine dust, generated by various factors, is conducted. Recently, eco-friendly air purification methods using air-purifying plants are being discussed, with the focus on biofiltration through vegetation. Previous research in this field has confirmed the reduction effects of transition metals such as Fe, which have been identified as harmful to human health. This study aimed to identify the sources of fine dust dispersion within subway stations and derive an efficient operational strategy for air-purifying plants that takes into account the behavior characteristics of fine dust within multi-purpose facilities. The experiment monitored regional fine dust levels through IAQ stations established based on prior research. Also, the data was analyzed through time-series and correlation analyses by linking it with passenger counts at subway stations and the frequency of train stops. Furthermore, to consider energy efficiency, we conducted component-specific power consumption monitoring. Through this study, we were able to derive the optimal operational strategy for air-purifying plants based on time-series comprehensive analysis data and confirm significant energy efficiency.