• 반도체디스플레이기술학회지
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• 제21권4호
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• pp.99-105
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• 2022

Public attention to the indoor environment of underground subway stations, which is a representative multi-use facility, has been increasing along with the increase in indoor activities. In underground stations, fine iron oxide, which affects the health of users, is generated because of the friction between wheels and rails. Among particulate pollutant reduction technologies, plants have been considered as a non-chemical air purification method, and their effects in reducing certain chemical species have been identified in previous studies. The present study aimed to derive the total quantitative and qualitative reduction effects of a bio-filter system comprising air purifying plants, installed in an underground subway station. The experiment proceeded in two ways. First, PM(particulate matter) reduction effect by vegetation biofilter was monitored with the IAQ(indoor air quality) station. In addition, chemical speciation analysis conducted on the samples collected from the experimental and control areas where plants and irrigation using SEM-EDS(scanning electron microscopy-energy dispersive X-ray spectroscopy). This study confirmed the effect of the vegetation bio-filter system in reducing the accumulation of particulate pollutants and transition and other metals that are harmful to the human body.

• 인간식물환경학회지
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• 제24권2호
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• pp.179-194
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• 2021

Background and objective: Plant-based biofilter system has become a promising candidate for improving indoor air quality due to its eco-friendly and sustainable nature. However, it remains controversial whether indoor air purification using a biofilter is effective. Methods: This study used the one-group pre- and post-test design to analyze the effects of the operation of the plant-based biofilter system on indoor air quality, students' perception of indoor air quality, health effects, and subjective and objective attentiveness. Results: Results of this study show that the application of the plant-based biofilter system changed the air environment in the classroom. The operation of the plant-based biofilter system significantly decreased PM_2.5 and PM₁₀ and slightly increased temperature and humidity. Satisfaction with air quality and subjective attentiveness were significantly improved but objective attentiveness and health effects were not improved. Conclusion: Further studies need to be conducted for improving indoor air quality of schools and evaluating the health effects and attention of occupants to present the objective performance of the plant-based biofilter system.

• 한국환경과학회지
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• 제27권9호
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• pp.789-796
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• 2018

This study aims to measure the emotional effects of pet plants, which have become popular in recent years. A questionnaire regarding perceptions of these indoor plants was administered to 78 university students. Thirty of these students took care of two species of pet plants for 90 days, and the emotional effects of this exercise were determined based on the type of words used in their daily records. The questionnaire results showed that the general recognition of emotional effects was low, though awareness of the term "pet plants" was high. However, after gardening for 90 days, participants began to consider their pet plants friends or family members, noting feelings of affection and sympathy in their daily writeups. These participants also experienced positive changes in their emotional well-being, including feelings of joy, hope, relaxation, confidence, and accomplishment. This study argues that pet plants can have positive effects on emotional stability and suggests that their adoption would be beneficial to humanity at large.

• 원예과학기술지
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• 제28권5호
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• pp.864-870
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• 2010

본 연구는 실내 관엽식물들의 실내 이산화탄소 제거능을 규명하기 위해서 수행되었다. 본 실험에서는 5종의 관엽식물인 헤데라($Hedera$ $helix$ L.), 벤자민 고무나무($Ficus$ $benjamina$ L.), 파키라($Pachira$ $aquatica$), 테이블 야자($Chamaedorea$ $elegans$), 인도 고무나무($Ficus$ $elastica$)를 사용하였다. 피트모스 배지와 하이드로볼 배지에 이식된 식물을 각각 밀폐 동화상에 넣고, 이산화탄소 500ppm 또는 1,000ppm을 주입하고, 광도는 50과 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ 두 수준으로 하여, 주간과 야간의 이산화탄소 변화량을 1시간 동안 측정하였다. 또한, 측정된 이산화탄소의 변화량을 광합성 속도(${\mu}molCO_2{\cdot}m^{-2}{\cdot}s^{-1}$)로 산출하였다. 주간에 모든 품종의 식물들이 밀폐 동화상 안의 이산화탄소를 흡수하였다. 파키라($Pachira$ $aquatica$)와 인도 고무나무($Ficus$ $elastica$)가 이산화탄소 제거에 효과적이었다. 초기 주입된 이산화탄소 농도가 500ppm일 때보다 1000ppm일때, 광도가 $50{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$일 때보다 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$일 때 이산화탄소 흡수량이 크며, 광합성률이 높은 것으로 나타났다. 식물별로 광합성률을 비교해 보면, 파키라($Pachira$ $aquatica$), 헤데라($Hedera$ $helix$ L.), 인도 고무나무($Ficus$ $elastica$)와 같이 엽면적이 넓은 식물들이 상대적으로 엽면적이 작은 테이블 야자($Chamaedorea$ $elegans$)와 벤자민 고무나무($Ficus$ $benjamina$ L.)와 같은 식물들보다 높은 광합성률을 나타내었다. 또한 모든 품종에서 주간에 흡수된 이산화탄소량에 비해 야간에 식물의 호흡에 의해서 방출되는 이산화탄소량은 매우 적은 것으로 나타났다. 한편, 배지 종류에 따라 이산화탄소 흡수량과 광합성률에서 차이는 크게 나타나지 않았다. 결론적으로, 이 실험을 통해서 관엽식물을 이용하여 실내 오염물질인 이산화탄소를 제거할 수 있으며, 주간에 식물이 광합성 잘 할 수 있는 환경을 조성해 주거나, 부피가 크고 실내와 같은 저광 조건에서 활발한 광합성이 가능한 식물을 선택함으로써 이산화탄소 제거를 극대화시킬 수 있을 것이다.

• 소음진동
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• 제7권4호
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• pp.621-629
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• 1997

For computer aided design and costruction of low noisy power plants, indoor and outdoor noise prediction program has been developed. The program utilizes the predefined data of noise sources and building materials and has the faculty to estimate the source level using the empirical formula in case of the measured data not being available. In the noise prediction, the mutual noise propagation between indoor and outdoor sites are considered. The outdoor noise source in the calculation of geometric divergence effects is modelled as the omni-directional finite line or planar source according to the source geometry and the receiving points. Outdoor noise prediction is carried out to consider the diffraction effect due to plant structures as well as the attenuation effect due to atmospheric absorption and soft ground. The results of indoor and outdoor noise prediction for a recently constructed diesel engine power plant show good agreement with the measured.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1997년도 춘계학술대회논문집; 경주코오롱호텔; 22-23 May 1997
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• pp.452-459
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• 1997

For computer aided design and construction of low noisy power plants, indoor and outdoor noise prediction program has been developed. The program utilizes the predefined data of noise sources and building materials and has the faculty to estimate the source level using the empirical formula in case of the measured data not being available. In the noise prediction, the mutual noise propagation between indoor and outdoor sites are considered. The outdoor noise source in the calculation of geometric divergence effects is modelled as the omni-directional finite line or planar source according to the source geometry and the receiving points. Outdoor noise prediction is carried out to consider the diffraction effect due to plant structures as well as the attenuation effect due to atmospheric absorption and soft ground. The results of indoor and outdoor noise prediction for a recently constructed diesel engine power plant show good agreement with the measured.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 춘계학술발표대회 논문집
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• pp.212-216
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• 2005

The purpose of this study is to make clear the indoor thermal environmental efficiency of indoor garden in apartment during winter. The questionnaire survey was carried out during the l0th${\sim}$20th of February 2004, respondents consisted of 215 residents living in a subject apartment estate. The field measurements of indoor thermal elements were carried out at A house with indoor garden and at B house without indoor garden. The measurements in two-subject houses were taken on simultaneously the 11th of February. As Results, the residents living in apartments with indoor garden show positive response on air moisture and satisfaction. The daily ranges of indoor temperature and globe temperature in the A house were narrower than the B house. The average relative humidity in the A house was higher and constant than the B house. Therefore, it was seemed that indoor environment during winter in the house with indoor garden maintained more constant or comfortable than the house without indoor garden by earning effect and humidity control effect of plants.

• 한국조경학회지
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• 제28권6호
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• pp.106-113
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• 2001

The purpose of this study is to find out the effect of recovery from psychological stress when watching plants indoors. As an instrument of measurement of psychological stress, Galvanic Skin Resistance(GSR) has been used because it has been convenient to read a psychological sign without a medical sense and an instrument. In order to make the conditions of stress and recovery, video programs have been made, and especially, the video program of recovery has consisted of three types-- types 1 of watching plants in a botanical garden, type 2 of watching very bush street, and type 3 of closing eyes naturally. The two groups of normal and the mentally handicapped persons have been participated in this experiment to compare the effect of recovery. As the result of this test, the rate of stress relief has been maximumly effected by watching the video program of plants. Between the two groups the recovery of stress has had better effects on the mentally handicapped than the normal one. And also it shows that the circumstances of emotional refinement is led by having plants in indoor. The result of this test has been turned out to be highly useful. It is desirable that a indoor worker, staying for a long time, contact with plants visually to keep healthy mental conditions. This study suggests that the surrounding conditions or the settings of circumstances play an important role for the emotional refinement of the groups of mentally han야capped persons as well as the normal person.

• Journal of Plant Biotechnology
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• 제48권3호
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• pp.179-185
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• 2021

현대사회에서 실내원예는 크게 벽면녹화나 가정 미니정원과 같은 복합설치 실내원예와 꽃꽂이, 테라리움, 실내 미니식물 재배와 같은 식물 위주 분야로 크게 나눌 수 있다. 이러한 실내원예에서 테라리움은 가장 일반인이 접근하기 쉽지만, 한국에서의 테라리움은 미적 감각이 우선 시 되었기 때문에 테라리움의 본래 목적인 밀폐공간에서 식물을 지속 가능하게 성장하고자 하는 취지가 상실되어버렸다. 또한 밀폐된 공간안에 식물을 식재하기 위해서는 식물의 미니화가 필요하다. 이러한 식재식물의 제한성 때문에 다육식물, 선인장, 이끼 등에 이용 가능 식물이 국한되어 있다. 이와 같은 문제점들을 극복하기 위해 본 연구에서는 다육식물 브론즈(X Graptosedum, Bronze)를 이용하여 테라리움 식재식물의 건전주화, 테라리움 식재를 위한 미니식물의 다양성, 미니식물의 대량생산을 통한 가격절감 등 3가지 문제점을 개선하였다. 특히 조직배양 된 다육식물을 조직배양 용기의 교체 및 식물체의 조성을 새롭게 하여 비보리움으로 발전시켰다. 본 논문에서는 현재 테라리움 문제점을 개선하고자, 새로운 실내원예 분야인 비보리움을 창안함으로 보다 일반인이 쉽게 접근할 수 있는 새로운 실내원예 분야를 창안하였다고 할 수 있다. 현대사회와 같은 1인 가구의 증가 및 팬데믹(Pandemic) 시대에서의 실내활동 증가로 인한 새로운 실내 원예 분야의 소개와 참여는 심리적 안정에도 도움이 될 수 있다고 판단된다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 춘계학술대회
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• pp.55-55
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• 2020

This study investigated the growth and chlorophyll fluorescence reactions of three Ardisia genus grown under various indoor light intensity conditions with the aim of evaluating their suitability as indoor plants. Young seedlings of A. crispa (Thunb.) A.DC., A. pusilla DC., and A. japonica (Thunb.) Blume were used in the experiment. The plants were cultivated indoors for 10 weeks under different light intensities: 10, 50, 100, and 200 PPFD (μmol·m^-2·s^-1), and their growth was compared with that of plants cultivated in a greenhouse during the same period (mean value 236.8±20.4 PPFD at noon). Also, chlorophyll fluorescence analysis was investigated with a portable PAM fluorometer. The indoor plants were maintained at 12/12 h photoperiod, temperature at 25±1℃, and humidity at 55±3%. Irrigation frequency (once every three days) was the same for the indoors and the greenhouse. The results of growth in three Ardisia plants showed that almost all parameters except leaf number and chlorophyll content had similar levels regardless of light intensity. A. crispa and A. pusilla plants grown in 200 PPFD were investigated to have low chlorophyll contents. Meanwhile, chlorophyll fluorescence parameters differed based on light levels. In A. crispa, the Fv/Fm (0.77), DIo/RC (0.47) and Fm/Fo (4.77) parameters tended to be poor at 200 PPFD compared to those at other light intensities. Similarly, the DIo/RC, Fm/Fo, and Pi_Abs parameters of A. pusilla plant (200 PPFD) are 0.45, 4.48 and 2.42, respectively, which can be considered stress. The analysis of fluorescence in A. japonica showed that all parameters except ETo/RC had similar levels regardless of light intensity. The ETo/RC parameter was 0.49 and 0.72 in the control plants and plants 200 PPFD, respectively, which was lower than those in plants at other light intensities. Therefore, it seems that the relatively high light intensity acted as a stressor for Ardisia plants.