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Effects of Plant Growth Regulators and Sugars on the $\alpha-Amylase$ Activity in Cotyledons of Germinating Vigna angularis Seeds

  • Hong, Jung-Hee
    • Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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    • v.2 no.2
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    • pp.159-168
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    • 1998
  • Effect of plant growth regulators and end-product on the enzyme activities in cotyledons of Vigna angularis during germination was investigated by measuring the changes of $\alpha-amylase$ activities in attached and detached cotyledons applied growth regulators and sugars. The higher levels of $\alpha-amylase$ in detached cotyledons than those in cotyledons attached to the embryonic axis were due to both faster synthesis and slower degradation of the enzyme in the detached cotyledons than in the attached cotyledons. Levels of $\alpha-amylase$ activity were reduced by high concentrations of glucose and sucrose, and it is suggested that this effect was caused mostly by osmotic stress and partly by end-product repression. In detached cotyledons exogenously supplied $GA_3,$ IAA, kinetin, or their combinations has a small promotive effect on the developmental patterns of $\alpha-amylase$ activity ABA and uniconazole both prevented the synthesis of $\alpha-amylase$. Glucose inhibition of enzyme activity was partly reversed by the application of $GA_3,$ and CAMP. $GA_3,$ and cAMP seemed to act through a similar mechanism. The addition of inhibitors of protein and RNA synthesis largely prevented the increase of enzyme activity in the presence or absence of exogenous $GA_3,$. The pretreatment experiments with canavanine indicated that the earlier the time of addition was, the lower the amylase activity was.

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A Study on the Palace Construction of Park Jacheong -Focusing on the Changdeokgung Palace and Detached Palaces- (박자청(朴子靑)의 궁궐건축 감역 연구 -창덕궁 및 이궁을 중심으로-)

  • Kim, Bue-Dyel;Cho, Jeong-Sik
    • Journal of architectural history
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    • v.26 no.1
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    • pp.93-104
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    • 2017
  • This study is about the Changdeokgung Palace and detached palaces of architect Park Jacheong who was a representative supervisor having framed the palace architecture of the Joseon Dynasty. The results are as follows. First, Park Jacheong had been in charge of Changdeokgung Palace for 15 years since its founding. The palace was continued to run for the longest time and was the palace on the frame made by him for the years, so Changdeokgung Palace's status has become as good as Gyeongbokgung Palace's. Second, he built a lot of palaces besides Changdeokgung. They were completed about the same time in accordance with the political intentions of King Taejong. Park Jacheong was a former military officer and was well skilled in mobilization of manpower and materials by making good use of the military power. Third, the detached palaces constructed by him were located in the places where military training and testing of new weapons were possible. They were also used as sleeping, dining and office spaces. This can be regarded as a result of the tradition of the storied-pavilion that had been since the Goryeo Dynasty, with the method of approaching to the main hall of the palace.

Seasonal Radon Concentration and Correlation Analysis of Indoor Radon Originated from Soil and Soil Radon at Detached House (계절적 라돈농도 변화 및 토양기원 실내라돈과 토양내 라돈농도의 상관성 분석 -단독주택 사례연구-)

  • Cho, Ju-Hyun;Kim, Younghee
    • Journal of Soil and Groundwater Environment
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    • v.22 no.5
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    • pp.105-111
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    • 2017
  • In this study, the variation of indoor and soil radon concentrations were measured at a test bed (detached house), and correlation analysis was performed using linear regression. The results showed that the average concentration of indoor radon was increased by about 20% when the heater was operated in the house, but it was decreased by 15% when the ventilation system was on. In the changes of seasonal radon concentrations, soil and indoor radon concentrations in winter were higher than in summer. Statistical analysis showed a weak correlation between the soil radon and indoor radon, but the correlation (R=0.852, $R^2=0.726$) was relatively high at exhaust condition in the winter. It is difficult to extrapolate the results of the study to the general cases because radon distribution is highly site-specific, but the result of this study could be used as a reference for radon management and reduction of detached house in the future investigations.

Evaluation of Thermal Environment in the Detached Housing Area Based on the Form-Based Codes (형태기반코드를 기반으로 한 주거지 열환경 평가)

  • Ryu, Ji-Won;Jung, Eung-Ho
    • Journal of the Korean housing association
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    • v.25 no.5
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    • pp.43-50
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    • 2014
  • This study assesses thermal environment of detached housing area by classifying buildings types with codes based on spatial characteristics and forms of the detached housing area and applying heat island alleviation measures, especially focused on FBCs (Form-Based Codes). We analyzed shapes and materials of outdoor space with 3D-CAD, which can affect the surface temperature of the case studies, focusing on heat island alleviation measures, and performed space design by applying relevant climate factors to a simulation. As to the 3D surface temperature and HIP distribution, low-temperature distribution was shown in the case studies when we applied heat island alleviation measures. FBCs (Form- Based Codes) is being developed for the purpose of creating new urban environment. This study is significant because it pays attention to the effects of surface temperatures on accumulation of sensible heat and reviews heat island alleviation measures with outdoor space shapes/materials in order to lower surface temperatures, aiming at improved pleasantness of the detached housing area.

Prediction of Wave-Induced Current Using Time-Dependent Wave Model (쌍곡선형 파랑모형을 이용한 해빈류 예측)

  • 이정만;김재중
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 1998.10a
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    • pp.189-199
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    • 1998
  • Wave-induced current model is developed in our study and this model is composed with wave transform model and current model. Two types of wave model are used in our study, one is Copeland(1985) type which is applied in the offshore region and the other is Watanabe and Maruyama(1984) type which is applied in the surf zone. The depth-integrated and time-averaged governing equation of an unsteady nonlinear form is used in the wave induced current model. Lateral mising, radiation stresses, surface and bottom stresses are considered in our current model. Copeland's(1985) relult is used to calculate radiation stress and Berkmeir & Darlymple's(1976) is used as a surface friction formula. Numerical solutions are obtained by Leendertse scheme and compared with Noda's(1974) experimental results for the uniform slope coastal region test and Nishimura & Maruyama's(1985) experimental relults and numerical simulation results for the detached breakwater test. The results from our wave model show good agreement with the others and also show nonlinear effects around the detached breakwater. Wave induced current model is developed in this study and this model shows nonlinear effects around the detached breakwater and can be applied in the surf zone and also consider the friction stresses.

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A Study on the Needs of the utilization and improvement of the multi-family housing residence (다가구.다세대주택 소유자의 주거환경 개선 및 활용 요구에 관한 연구)

  • Kim, Hye-Yeun;Lee, Young-Sun;Jang, Mi-Seon;Lee, Yeun-Sook
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2008.11a
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    • pp.135-139
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    • 2008
  • Through the industrialization since 1960, Korean housing has been developed in a uniform way which is to demolish first and then construct from the scratch. In this process, detached houses and multi-family living detached houses have disappeared without being paid much attention. The detached houses with blood or non-blood related multi-family living situations are typically popular, and worthy enough to explore for professionals right and creative solutions to enhance their values. But many of the people suffered for the expenses and the absence of the idea to enhance their housing themselves. The purpose of this research is to clarify user's demands of developing an adaptable lifespan house and to try to find the solution about the expenses of self improvement. This study used a Small group workshop Panel Method. The workshop consisted of three stage, such as the awareness of their existing residence and lease status, the needs of the housing improvements and the demands of the adaptable house. This study is expected to serve as a fundamental data to promote discussion on reuse of existing residence building and to promote rental detached houses.

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A Study for Developing Housing Alternatives for the Elderly Focused on Group Home and Shared Housing for Aging in Place - Focused on the Elderly Lived in Detached Housing, Busan - (그룹 홈과 공유주택 개념을 중심으로 본 Aging in Place를 위한 노인주거대안 개발을 위한 연구 - 부산광역시 단독주택 거주 노인을 중심으로 -)

  • Oh, Chan-Ohk
    • Journal of the Korean housing association
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    • v.19 no.3
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    • pp.59-70
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    • 2008
  • The purpose of the study was to suggest the housing alternatives for the elderly from the viewpoint of aging in place. The study was intended to present the alternatives on the basis of the concept of group home and shared housing. In order to achieve it, first, the concept and characteristics of group home and shared housing were examined. Then, the living conditions of the elderly and the home sharing related needs of them were examined. The subjects were 201 older persons whose age was more than 65 years and lived in detached houses. Results were as follows; 1) It was identified that group home and shared housing were acceptable to the subject aged. 2) The modified group home which consisted of less than 10 individual detached houses and common area was presented as an alternative for the elderly. The individual ones were existing ones which the elderly lived in. The common area included of common kitchen, dining room, bathroom, and living room for about 10 old persons. The common area can be provided by building a new one and remodeling the existing building for other purpose or community center for the elderly. The detached houses which had spare bedrooms can be shared by another old persons. This alternative would be economic and useful to the elderly.

A Study on Thermal Comfortable Following the Thermal Environment Migration in Detached Housing Area (열환경 완화를 통한 주택지내 쾌적성 확보에 관한 연구)

  • Ryu, Ji-Won;Jung, Eung-Ho;Hoyano, Akira;Kim, Dae-Wuk
    • Journal of the Korean housing association
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    • v.24 no.1
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    • pp.51-59
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    • 2013
  • This study aims to improve the thermal comfort level of detached housing area by reducing the impact of thermal environment. The study focused on reducing surface temperature that is generated in buildings and adjacent spaces as a result of sensible heat load and presented a proposal on implementing planting method considering its outdoor condition and structure and composed materials. To perform the study, we utilized 3D-CAD to examine the outdoor condition and structure and composed materials that impact on surface temperature and conducted space design after reflecting climatic elements in simulations. The result is as follows. In reviewing temperature distribution of Heat Island Potential (HIP) of buildings and adjacent spaces, in case where green coverage ratio is increased, there was a $6^{\circ}C$ temperature difference and in regard to changes in the thermal environment in detached housing area, in case where rooftop planting, surface improvement, planting, and overall green coverage ratio is increased, there was a $10^{\circ}C$ temperature difference. In addition, there was difference in temperature in detached housing area following the changes in wind.

An Investigation on The Changes of Storage Space in Korean Housings-On The Vernacular Housings Built During 1995-1985- (우리나라 주거공간에서의 수장공간 종류와 크기 변천에 관한 고찰-1955년에서 1985년까지 지어진 공영 및 민영주택을 중심으로-)

  • 최재순
    • Korean Institute of Interior Design Journal
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    • no.4
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    • pp.45-52
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    • 1995
  • This study is on investigation of sizes, functions and positions of storage space in the house, which is basically necessary for effective using of limit house space. The Storage spaces in Korean vernacular housings are intensively investigated to evaluate their usage and to ex-tend their utility for modern life. Data and materials on the storage spaces in typical houses were taken from the "NamSa Village" and Urban Single-Detached House provided by K.N.H.C. In order to get the fundamental materials, related references are widely investigated and interview and direct visiting have also been made. The results are obtained as follows. 1. There are many kinds of storage space in the rural detached house, however this space could approximately classified as five kinds. 2. The number of "BYUKJANG" and "BANCHIM" are more equipped in apartment houses rader than rural detached houses. 3. There are more kinds of storage space in the public detached houses rather than the public apartment houses. 4. In the apartment houses constructed by private companies, more storage space are generally equipped rather than public apartment houses. than public apartment houses.

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