• 제목/요약/키워드: indoor plant

검색결과 254건 처리시간 0.024초

혼화제 종류 및 혼합시간에 따른 콘크리트 물성 평가 (Evaluation of Concrete Properties According to Admixture Type and Mixing Time)

  • 윤주용;박용규;최병걸;이대식;김우영;윤기원
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2022년도 가을 학술논문 발표대회
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    • pp.173-174
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    • 2022
  • In this study, the mixing performance of concrete was studied by setting the chemical admixture and mixing time as variables. As a result of the indoor experiment and batch plant review, the mixing time reduction performance was confirmed when the PC-based admixture A was used.

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사회복귀예정 수형자의 원예활동 및 원예식물 선호도 분석 (Analysis of Horticultural Activities and Plants Preference on Prisoners Scheduled for Release)

  • 이상미;정순진;문지혜;이예지;이숙
    • 농업생명과학연구
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    • 제46권6호
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    • pp.87-96
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    • 2012
  • 본 연구는 사회복귀를 예정하고 있는 수형자들의 원예치료 및 원예활동에 대한 요구와 선호도를 조사하여 사회복귀예정 수형자를 대상으로 한 교정 교화 원예치료프로그램 개발을 위한 식물 및 원예활동에 대한 기초 자료를 마련하기 위하여 수행되었다. 설문지 분석 결과, 남성, 40대, 고졸이하가 가장 많았고 사기에 기독교가 가장 많았다. 교정 교화프로그램으로써 원예치료가 제공되는 것에 대해서 바람직하다는 의견이 약 70%, 교정 교화프로그램으로써 원예치료가 제공되었을 때 60% 이상이 참여할 의사가 있다고 밝혔다. 원예활동 경험은 없는 사람이 많았고, '산책, 견학, 여행 등의 식물감상활동'을 가장 선호하고 다음으로 '실내외에서 식물 가꾸기', '식물을 이용한 장식 및 공예활동' 순이었다. 선호하는 식물은 화훼를 가장 선호했고, 화훼식물 중에서는 '난초류'를, 채소식물 중에서는 '열매채소'를, 열매채소 중에서는 '토마토'를 가장 선호하는 것으로 나타났다.

실내 환경 개선에 적합한 식물 선발을 위한 온도, 광도, 이산화탄소 농도에 따른 관엽식물들의 생리적 반응 (Plant Physiological Responses in Relation to Temperature, Light Intensity, and CO2 Concentration for the Selection of Efficient Foliage Plants on the Improvement of Indoor Environment)

  • 박신애;김민지;류명화;오명민;손기철
    • 원예과학기술지
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    • 제28권6호
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    • pp.928-936
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    • 2010
  • 본 연구는 관엽식물 8종을 선정하여 온도, 광도, 이산화탄소 농도에 따른 식물의 광합성률을 포함한 생리반응을 살펴 보고, 그에 따른 실내 환경 개선에 효과적인 식물을 구명하고자 실시하였다. 식물재료로는 헤데라, 벤자민 고무나무, 파키라, 스파티필름, 시서스, 디펜바키아, 스킨답서스, 싱고니움을 사용하였으며, $16^{\circ}C$$22^{\circ}C$ 온도조건하에서 광도는 PPFD 0, 25, 50, 75, 100, 150, 300, 또는 $600{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 수준으로, 이산화탄소 농도는 0, 50, 100, 200, 400, 700, 또는 $1,000{\mu}molCO_2{\cdot}mol^{-1}$의 수준으로 조절하여 휴대용 광합성 측정기(Li-6400, Li Cor, USA)로 관엽식물들의 광합성 효율과 증산율을 측정하였다. 광도, 엽육내 이산화탄소 농도 변화, 그리고 온도에 따른 관엽식물들의 광합성 반응은 매우 다양했다. 약광(PPFD $0-100{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$)에서의 광합성 능력을 나타내는 순양자수율은 디펜바키아를 제외한 대부분의 종에서 높게 나타났으며, 고광(PPFD $200-600{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$)에서는 헤데라, 벤자민 고무나무, 파키라, 스파티필름이 높은 광합성능력을 나타내었다. 이산화탄소를 고정하는 암반응과 관련된 탄소고정효율은 시서스와 싱고니움을 제외한 6종의 관엽식물들에서 비교적 높게 나타났다. 고농도의 이산화탄소에서 광합성률이 높은 식물은 헤데라와 스파티필름이었으며, $22^{\circ}C$에서 자란 벤자민 고무나무와 파키라도 높은 광합성률을 보였다. 한편, 헤데라, 스파티필름은 증산율도 높게 나타났다. 따라서 저광, 고농도의 이산화탄소, 낮은 상대습도가 특징인 일반 가정이나 사무실 같은 실내 환경을 고려했을 때 헤데라, 벤자민 고무나무, 파키라, 스파티필름 등을 이용하는 것이 실내 환경 개선에 효과적이라고 판단되었다.

설비공학 분야의 최근 연구 동향 : 2010년 학회지 논문에 대한 종합적 고찰 (Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2010)

  • 한화택;이대영;김서영;최종민;김수민;권영철;백용규
    • 설비공학논문집
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    • 제23권6호
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    • pp.449-469
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    • 2011
  • This article reviews the papers published in the Korean Journal of Air-Conditioning and Refrigerating Engineering during 2010. It is intended to understand the status of current research in the areas of heating, cooling, ventilation, sanitation, and indoor environments of buildings and plant facilities. Conclusions are as follows. (1) Research trends of thermal and fluid engineering have been surveyed as groups of general thermal and fluid flow, fluid machinery, and new and renewable energy. Various topics were presented in the field of general thermal and fluid flow. Research issues mainly focused on the thermal reliability of axial fan and compressor in the field of fluid machinery. Studies on the design of ground source heat pump systems and solar chemical reactors were executed in the field of new and renewable energy. (2) Research works on heat transfer area have been reviewed in the categories of heat transfer characteristics and industrial heat exchangers. Researches on heat transfer characteristics included heat transfer in thermoelectric cooling/power generation systems, combined heat and power systems, carbon nano fluid with PVP, channel filled with metal foam and smoke ventilation in a rescue station of a railroad tunnel. Also the studies on flow boiling of R123/oil mixture in a plain tube bundle and R410A charge amount in an air cooled mini-channel condenser were reported. In the area of industrial heat exchangers, researches on plate heat exchanger, shell and tube heat exchanger, enthalpy exchanger, micro channel PCHE were performed. (2) Research works on heat transfer area have been reviewed in the categories of heat transfer characteristics and industrial heat exchangers. Researches on heat transfer characteristics included heat transfer in thermoelectric cooling/power generation systems, combined heat and power systems, carbon nano fluid with PVP, channel filled with metal foam and smoke ventilation in a rescue station of a railroad tunnel. Also the studies on flow boiling of R123/oil mixture in a plain tube bundle and R410A charge amount in an air cooled mini-channel condenser were reported. In the area of industrial heat exchangers, researches on plate heat exchanger, shell and tube heat exchanger, enthalpy exchanger, micro channel PCHE were performed. (3) Refrigeration systems with alternative refrigerants such as hydrocarbons, mixed refrigerants, and CO2 were studied. Performance improvement of refrigeration systems are tried applying various ideas of refrigerant subcooling, dual evaporator with hot gas bypass control and feedforward control. The hybrid solar systems combining the solar collection devices with absorption chillers or compression heat pumps are simulated and studied experimentally as well to improve the understanding and the feasibility for actual applications. (4) Research trend in the field of mechanical building facilities has been found to be mainly focused on field applications rather than performance improvements. Various studies on heating and cooling systems, HVAC facilities, indoor air environments and energy resources were carried to improve the maintenance and management of building service equipments. In the field of heating and cooling systems, papers on a transformer cooling system, a combined heat and power, a slab thermal storage and a heat pump were reported. In the field of HVAC facilities, papers on a cooling load, an ondol and a drying were presented. Also, studies on HVAC systems using unutilized indoor air environments and energy resources such as air curtains, bioviolence, cleanrooms, ventilation, district heating, landfill gas were studied. (5) In the field of architectural environment and energy, studies of various purposes were conducted such as indoor environment, building energy, renewable energy and green building. In particular, renewable energy and building energy-related researches have mainly been studied reflecting the global interest. In addition, many researches which related the domestic green building certification of school building were performed to improve the indoor environment of school.

자생 상록 굴거리나무의 실내조명 하에서 적정광도 분석 및 도입방안 (Analysis on Suitability Light Intensity and Introduction Plan under the Indoor Lighting for the Native Evergreen Daphniphyllum macropodum)

  • 신현철;윤재길;최경옥
    • 한국조경학회지
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    • 제40권1호
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    • pp.110-117
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    • 2012
  • 본 연구는 우리나라 자생종 굴거리나무에 대한 실내조명 하에서 광적응성을 조사해 보고 실내조경공간으로 도입할 때, 도입방안을 제시해 보고자 수행되었다. 공시수종인 굴거리나무는 제주도 농가에서 1년생을 구입한 후, 경남과학기술대학교 종합농장 유리온실에서 40일간 순화시킨 후 2010년 2월 15일에서 2010년 11월 15일까지 실험하였다. 첫째, 형광등의 경우, 100lux에서 500lux까지 식물이 고사하거나 잎이 지는 현상을 보여 생육상태가 좋지 못하였으며, 1,000lux부터 원활한 생육 및 생장을 보였다. 엽수나 수형, 체내 광합성률, 관상가치 등을 토대로 살펴볼 때, 형광등 1,000lux에서 가장 양호한 생장을 하여 최적광도인 것으로 조사되었다. 둘째, LED등의 경우,100lux에서 1,000lux까지 고사현상을 보여 생육상태가 불량하였으며, 광도가 높을수록 원활한 생장을 보였다. 2,000lux에서 가장 원활한 생육 및 생장을 하였다. 셋째, 삼파장의 경우,1,000lux까지 고사현상이 심하여 도입한 4개의 광원 중 생육상태가 가장 좋지 않아 전반적으로 삼파장은 굴거리나무 생육에 부적합한 것으로 파악되었다. 2,000lux에서 가장 원활한 생육 및 생장을 하였다. 넷째, 광섬유의 경우 100lux하에서도 식물 전체가 고사하는 현상은 보이지 않아 생육이 가능하여 도입광원 중 생육 및 생장상태가 가장 양호하였다. 대체적으로 광도가 높을수록 생장률이 높았으나,2,000lux보다 1,000lux하에서 엽수의 출엽률 및 수형이 흐트러지지 않아 관상가치가 더 좋았으며, 체내 광합성률도 높아 1,000lux를 조명해 주는 것이 가장 효과적인 것으로 파악되었다. 광적응성을 고려하여 굴거리나무를 실내조경공간으로 도입할 때, 광섬유, 형광등, LED등의 순으로 도입하는 것이 적합하며, 삼파장 등은 부적합한 것으로 파악되었다. 광원별 최적광도는 광섬유와 형광등을 도입할 경우 1,000lux, LED등을 도입할 경우 2,000lux를 조명해 주는 것이 효과적인 것으로 나타났다. 또한, 자생종 굴거리나무는 외래종인 대엽홍콩을 대체할 수 있는 수종으로 실내조경식물로 도입이 가능하며, 중심목으로 활용할 수 있을 것으로 기대되었다.

Screening of Medicinal Plants Against the Infection of Antheraea mylitta Cytoplasdmic Polyhedrosis Virus (AmCPV) in Tropical Tasar Silkworm, Antheraea mylitta Drury

  • Singh, Gajendra Pal;Sahay, Alok;Kulshresth, Varun;Kumar, Phani Kiran;Pallavi, Saumya;Ojha, Nand Gopal;Prasad, Bhagwan Chandra
    • International Journal of Industrial Entomology and Biomaterials
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    • 제20권1호
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    • pp.13-17
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    • 2010
  • Ten numbers of plants, based on their medicinal value, were used to test their efficacy against virosis (caused by cytoplassmic polyhedrosis virus) in tasar silkworm, Antheraea mylitta Drury. in indoor rearing conditions. The aqueous extracts of leaf of Azadirichita indica (neem), Acharanthus aspera, Psoralea corylifolia, Asparagus racemosus, Adhatoda zelanica (Basak), Andrographis paniculata (Kalmegh), Moringa oilephera (sahjan), whole plant of Phyllanthus urinaria (Bhuiamla), Centella asiatica (Veng sag) and Curcuma longa (Haldi powder) in different concentrations were used for containment of virosis in silkworm larvae. The tasar silkworm larvae were orally inoculated with PIBs ($1\times10^6$) of AmCPV in $2^{nd}$ instar and treated with plant extracts in each instar ($2^{rd}$ instar onwards). The mortality due to virosis was recorded during larval period. The plant extracts, irrespective of their concentrations, were found effective in suppressing the virosis where P. urinaria reduced the virosis to 56.90% followed by A. paniculata (53.82%) and least in C. asiatica (5.15%). The lowest pooled larva mortality 36.99% was recorded in the treatment of P. urinaria. Comparatively higher larva mortality 39.91% was observed with the treatment of A. paniculata. The highest larva mortality in treatment was with C. asiatica (81.99%). In treated control larva mortality was 86.50%.

Comparison of the Particulate Matter Removal Capacity of 11 Herbaceous Landscape Plants

  • Kwon, Kei-Jung;Odsuren, Uuriintuya;Kim, Sang-Yong;Yang, Jong-Cheol;Park, Bong-Ju
    • 인간식물환경학회지
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    • 제24권3호
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    • pp.267-275
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    • 2021
  • Background and objective: Particulate matter (PM) has a fatal effect on health. There have been many studies on the use of plants such as trees and shrubs as eco-friendly and sustainable biofilter for the removal of PM. In forming more green space, ground cover plants play an important role in multi-layered planting. This study was conducted to investigate the ability of plants to reduce PM, targeting Korean native ground cover plants with high availability in urban green spaces. Methods: For 4 species of Asteraceae, 4 species of Liliaceae, and 3 species of Rosaceae, one species of plants at a time were placed in an acrylic chamber (800 × 800 × 1000 mm, L × W × H) modeling an indoor space. After the injection of PM, the amount of PM remaining in the chamber over time was investigated. Results: For all three types of PM (PM10, PM2.5, PM1), significant difference occurred in the amount of PM remaining between plant species after 1 hour in the Liliaceae chamber, 3 hours in the Asteraceae chamber, and 5 hours in the Rosaceae chamber. With Liliaceae, the leaf area and the amount of PM remaining in the chamber showed a negative (-) correlation. With the Asteraceae and Rosaceae, there was a weak negative correlation between the leaf area and the amount of PM remaining in the chamber. Conclusion: When using ground cover plants as a biofilter to remove PM, it is considered effective to select a species with a large total leaf area, especially for Liliaceae.

Trend Analysis of Pet Plants Before and After COVID-19 Outbreak Using Topic Modeling: Focusing on Big Data of News Articles from 2018 to 2021

  • Park, Yumin;Shin, Yong-Wook
    • 인간식물환경학회지
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    • 제24권6호
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    • pp.563-572
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    • 2021
  • Background and objective: The ongoing COVID-19 pandemic restricted daily life, forcing people to spend time indoors. With the growing interest in mental health issues and residential environments, 'pet plants' have been receiving attention during the unprecedented social distancing measures. This study aims to analyze the change in trends of pet plants before and during the COVID-19 pandemic and provide basic data for studies related to pet plants and directions of future development. Methods: A total of 2,016 news articles using the keyword 'pet plants' were collected on Naver News from January 1, 2018 to August 15, 2019 (609 articles) and January 1, 2020 to August 15, 2021 (1,407 articles). The texts were tokenized into words using KoNLPy package, ultimately coming up with 63,597 words. The analyses included frequency of keywords and topic modeling based on Latent Dirichlet Allocation (LDA) to identify the inherent meanings of related words and each topic. Results: Topic modeling generated three topics in each period (before and during the COVID-19), and the results showed that pet plants in daily life have become the object of 'emotional support' and 'healing' during social distancing. In particular, pet plants, which had been distributed as a solution to prevent solitary deaths and depression among seniors living alone, are now expanded to help resolve the social isolation of the general public suffering from COVID-19. The new term 'plant butler' became a new trend, and there was a change in the trend in which people shared their hobbies and information about pet plants and communicated with others in online. Conclusion: Based on these findings, the trend data of pet plants before and after the outbreak of COVID-19 can provide the basis for activating research on pet plants and setting the direction for development of related industries considering the continuous popularity and trend of indoor gardening and green hobby.

Growth Responses and Regrowth to Low Temperature of Nine Native Moss Species

  • Gong, Gyeong Yeop;Jeong, Kyeong Jin;Lee, Sang Woo;Yun, Jae Gill
    • 인간식물환경학회지
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    • 제22권6호
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    • pp.575-582
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    • 2019
  • Moss is used as an important material in indoor landscaping as well as outdoor landscaping. Moss is vivid green during growth and excellent in ornamental value. But when temperature drops, moss stops growth, turns brown or loses its ornamental value. In the present experiment, for the purpose of classifying native mosses according to the growth response to low temperature, the temperature of the plant growth chamber was set to 15℃/5℃ (16h/8h, day/night) and 5℃ (24h) for 8 weeks using nine native moss species. Thereafter, the temperature of the plant growth chamber was set to 20℃, and then the changes of moss block area and moss color were measured. The changes of moss block area and moss color were measured using a Photoshop program, after each moss block was photographed. As a result, Atrichum undulatum (Hedw.). Beauv., Etodon luridus (Griff.) A. Jaeger, Bachythecium plumosum (Hedw.) Schimp, Plagiomnium cuspidatum (Hedw.) T.J. Kop, and Hypnum plumaeforme Wilson showed a small decrease in moss block area at low temperature, and their recovery were the fastest at 20℃. These three species had higher green values at low temperature compared to other species, and the greenness increased rapidly at 20℃. On the other hand, Atrichum undulatum (Hedw.). Beauv., Marchantia polymorpha L., and Thuidium cymbifolium (Mitt.) A. Jaeger showed the smallest block area at low temperature and the lowest recovery even at 20℃. Their green values also decreased significantly at low temperature, and maintained low green value even at 20℃. These results showed that these three moss species are sensitive to low temperature. The remaining Myuroclada maximowiczii, Plagiomnium cuspidatum, and H. erectiusculum showed moderate responses to low temperature compared to other six species of mosses.

원식생 복원을 위한 산림표토내의 매토종자 적정 활용방안 연구 (The Study on the Utilization of Soil Seed Bank for the Restoration of Original Vegetation)

  • 김남춘;김호연;최미연
    • 한국환경복원기술학회지
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    • 제18권6호
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    • pp.201-214
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    • 2015
  • This study was conducted to identify forest topsoil's usefulness from July 2013 to Oct 2014. Generally, there are abundant seeds in topsoils and it can be used at restoration works. Mt. GARIWANG is famous for biodiversity in Korea. This study was aimed to find out the suitable utilization methods of natural topsoils for restoration works at sky-slopes construction sites. Test beds was made to identify suitable collecting times and suitable topsoil thickness. The main results are summarized as follows. First, Mt. GARIWANG have diverse species and in topsoils we can find lots of burried seeds which can be used at restoration works. Second, according to indoor experiment, as the depth of topsoil used thicker, the number of plants and coverage rates were increased. Also, there were no distinct differences in coverage rates between 5cm and 8cm thick topsoil plots and it can be possible to use at least 3cm thick topsoils even thou lower coverage rates. Third, as the results of research about indoor and outdoor experimental plots, there were difference in plant emergency. If we use the stabilizer to protect soil erosion, then we can get more increased results at sloped outdoor experimental plots. Fourth, based on environmental impact assessment, there was 389 species in whole region of Mt. GARIWANG. Through this seed bank experiments, we can find 23 varieties, including 4 tree varieties and 19 herbaceous varieties. We can find lots of native herbaceous species from topsoils. Fifth, this research was done at the specific area of Mt. GARIWANG and used limited topsoils. But we monitoring more longer periods, then there will be more useful outcomes. Finally by researching topsoils of Mt. GARIWANG, we can find diverse native plants. Thus, we must reuse natural topsoils of Mt. Gariwang for restoration of original vegetation.