• 아시안잔디학회지
• /
• 제7권1호
• /
• pp.19-30
• /
• 1993

Experiments were conducted to investigate propagation, shade tolerance, cold resistance and growth rate of evergreen ground cover plants ; Vinca minor K , Ajuga reptans L., Ophiopogon japonicus ker. f nanus hort , and Hedera helix.. The results were as follows : 1.It is convenient to use the growing case for rice seed to grow and transplant Vinca minor seed-ling. The most proper density of transplanting Vinea was 180 plants per 1m$^2$. At the end of growing season, the coverage came up to 90% The rooting ability of Hedera helix was best to cut from April to May (temperature 15~23˚C). The seedling length of Parthenocissus quinguefohlia were irregular and ranged from 5 cm of 200cm. 2. Ajuga reptans L., Ophiopogon j. and Vinca minor L. grew better under 50% light intensity than full sunlight. Particularly, under full sunlight and aestival high temperature, there were a few withering plants in Ajuga reptans L. , and V Vilica minor L. 3. Of Vinca minor K., Ajuga reptans L. , Ophiopogon japonicus ker. f. nanus hort. and Hedera helix. acclimatized in open field, where temperature was from -7~8˚C. There were few plants had damage in low temperature incubator to -16˚C after field acclimatization. 4.Tendrils of Parthenocissus quinguefolia strongly clung to the wire netting stone fence but intruded into the gap and cranny of the precast concrete fence and so clung to, so that it needed to install the bending net on the precast concrete fence.

• KIEAE Journal
• /
• 제17권2호
• /
• pp.29-34
• /
• 2017

Purpose: Recently, significant heat loss through the window takes place in buildings. Nevertheless, there exists little literature concerning the exterior horizontal shading devices and the design criteria are not clearly settled yet. Applying the exterior horizontal shading devices is more efficient as compared to the interior shading devices in that solar radiation can be directly blocked before passing through the window or the envelope. The purpose of this study is to reduce the internal load by designing the exterior horizontal shading devices and verify the degree of reduction in energy consumption. Method: This study aims to reduce energy consumption in cooling and heating through proposing proper length and shape of the exterior horizontal shading devices in public buildings. In the process, actual energy data and the Design Builder simulation program are utilized. In addition, economic aspect is considered to figure out the optimal length of the exterior horizontal shading devices that maximizes efficiency. Result: As a result, the proper length and shape of the exterior horizontal shading devices are provided as follows: 1) Energy consumption in cooling and heating is minimized when the exterior horizontal shading devices are designed as 0.5m*2. 2) Electricity bill is the lowest when the exterior horizontal shading devices are designed as 3.3m*2. The gap between maximum and minimum electricity bill is about 7.8~14%.

• 자연과학논문집
• /
• 제15권1호
• /
• pp.111-125
• /
• 2005

This study aims at reconsidering the spacial structure and suggesting guidelines for campus planning and design with spatial reference to the Campus of PaiChai university, area $208,499m^2$, Taejon. This study is mainly based on user's behavior and physical traces and questionnaire survey. User's behavior and physical traces were carefully observed by 20 students of dept. of landscape architecture at each alloted zone, 6 zones in Campus. Questionnaire survey, consisted of user attitudes, use satisfaction factors and personal items was carried out to 320 persons. As a result, the item of 'rest' shows the highest mean and the item of 'chatting' and 'meeting' follows to utilization purpose. The length of stay is generally 30minute to 1hour. The factor analysis, on the object of 32 items except 4 item, appeared 8 factors: visual elements, activity, vehicle, plants, practicality of street furniture, bench, spacial use and shade.

• Journal of the Korean Wood Science and Technology
• /
• 제26권1호
• /
• pp.51-56
• /
• 1998

The bast fiber of paper bush misumada have been cultivated in south coast bay of the Korean peninsula were not used to handmade painting paper. Therefore, in using the bast fiber of paper bush misumada manufactured handmade painting paper, tested absorption speed, blot characteristics and organic functions. The results are summarized as follows; The handmade painting paper manufacured only the bast fiber of paper bush misumada proper to the absorption speed of China ink, didn't have difference of the length and width for blot. And it was most fitted to east writing-and-painting using. Also the flexibility excell, and light and shade in overpainting directly appeared, and fitted to black-and-white drawing. And the using increase plan of the paper bush misumada demanded.

• Plant Resources
• /
• 제8권2호
• /
• pp.103-109
• /
• 2005

Lettuce (Lactuca sativa L.) is known to contain water-soluble substances that improve antioxidant status due to the richness in antioxidants. Greenhouse experiment was carried out under different shading conditions during spring lettuce growing season. Shade significantly reduced shoot weight, number of leaves and chlorophyll content, while it increased shoot length of lettuce plants. The antioxidant potential of the individual fraction was in order of n-butanol > ethyl acetate > water > n-hexane fraction, although was less than that of commonly used antioxidants, BHT and ascorbic acid. Fractions from lettuce plants dose-dependently increased DPPH free radical scavenging activity, in vitro test. By means of HPLC analysis, BuOH fraction of cultivar 'Hwahyang' (57.93 mg $100g^{-1}$) had the highest amount of antioxidant chi orogenic acid. Shading treatment increased average amount of chlorogenic acid of all cultivars in BuoH, EtOAc, hexane and water fractions by 33, 120, 144, and $58\%$, respectively. These results suggest that lettuce plants had potent antioxidant activity, and their activities were differently exhibited depending on cultivar and fraction.

• 한국주거학회논문집
• /
• 제17권2호
• /
• pp.107-115
• /
• 2006

This study examined the equivocalness of the standard legislation regarding the present situation of the sunshine-related law to reduce the trespass of the right of sunshine. In order to make more specific standard about that law, it was intended to suggest the distance ratio between apartment houses by the regional groups, the angle of building's direction and the gradient of the ground with the process of subdividing the existing regulation.

• 한국염색가공학회지
• /
• 제24권2호
• /
• pp.106-112
• /
• 2012

As a subsequent research of the previously reported$^{9)}$, a series of diaminoanthraquinoid blue dyes having hexyl, heptyl and octyl substituents were newly synthesized in order to investigate dyeability toward polypropylene fibers. As the length of alkyl groups introduced to the chromophore increased, the dyeability of the dyes toward polypropylene fibers also increased and then gradually decreased. From the result of dyeing, the hexyl-substituted dye showed the highest color strength and deep shade on pure polypropylene fibers. The good fastness rates to wash, rubbing and light were also obtained for all of the synthesized dyes.

• 아시안잔디학회지
• /
• 제18권1호
• /
• pp.15-27
• /
• 2004

내음성 지피식물의 생리, 생태학적 특성을 구명하기 위하여 3월 부터 10월 까지 참비비추를 재료로 하여 차광을 달리한 상태에서 이들 인공군락의 물질생산과 생장특징을 분석하였다. 3반복 완전임의배열법에 의하여 각 시험구 공히 식물별 전일광(비교구) 30%, 50%, 70% 차광율의 시험구를 설치하였으며 10일 간격으로 주변효과(Edg effect)를 고려한 Sampling을 실시하였다. 이상의 방법에 의한 연구결과를 다음과 같이 요약 하였다. 1. 8월 초순이후부터 9월 말경까지의 생육과정 차광조절구가 비교구에 비하여 엽수의 높은 증가율을 보였으며, 전시험기간 중 30%차광구에서 9월 10일경 생엽수가 평균 10.1로서 최고치를 보였다. 2. Cont.구는 조절구에 비하여 시험기간 중엽의 신장과 신장율도 공히 낮은 경향을 보였다. 30% 차광구에서 9월 20일경에 엽장이 25.87cm로서 최고치를 보였다. 3. 시험기간중 생육경과에 따른 엽폭의 증가는 각 조절구 공히 8월 중순경까지는 완만한 경향을 보였으나, 8월 22일경부터 9월 10일경의 생육과정에서 엽폭의 증가율이 현저히 높게 나타났다. 4. 엽병길이의 증가는 8월 초순경에서 8월 말경 사이의 생육과정에서 현저히 높은 신장율을 나타냈다. 6. 참비비추의 생육경과에 따른 엽수, 엽장 및 엽폭, 엽병길이의 생장은 30%, 50% 구에서 시험기간중 생육과정에서 비교구와 70%의 조절구에 비하여 현저하게 높은 경향을 보였고, 비교적 적은 광조건에서도 안정된 생육이 이루어 질 수 있는 음지식물로서의 특성을 나타내었다.

• 한국약용작물학회지
• /
• 제23권4호
• /
• pp.284-291
• /
• 2015

This study was performed to investigate the effects of enhanced light transmission on plant growth, photosynthetic ability, and disease tolerance to leaf blight, anthracnose in ginseng (Panax ginseng C. A. Meyer, Araliacease family) during the early growth stage (April to June). The photosynthetic ratio, stomatal conductance, and stem diameter of plants grown under a shade net with 15% light transmission rate showed an increasing trend compared to the control plants (5% light transmission rate) although the growth of the aerial parts were not influenced significantly. Plant height, stem length, and leaf length of treated plants were not significantly different from those of the control plants. Root parameters, such as root length, diameter, and weight of treated plants increased significantly compared to the control. Yield performance ($187.4kg{\cdot}10a^{-1}$) of treated plants was 55.5% higher than that of the control ($150.4kg{\cdot}10a^{-1}$). Additionally, disease severity scores of treated plants were lower than those of the control plants, revealing higher survival rates. To retain high yield potential and enhance the level of disease tolerance in ginseng, we suggest the increase of light transmission rate during the early growth stage.

• 아시안잔디학회지
• /
• 제24권2호
• /
• pp.149-155
• /
• 2010

이번 실험은 차광조건하에서 생장조절제들이 한국잔디 '제니스'의 수평생장에 미치는 영향에 대하여 알아보기 위하여 수행하였다. 실험포지 잔디를 무차광, 47%와 77%의 차광조건 하에 flurprimidol(FP), paclobutrazol(PB), trinexapac-ethyl(TE) 세가지의 생장조절제를 각각 0.2, 0.4, and $0.8\;kg{\cdot}ha^{-1}$ FP, 0.16, 0.32, and $0.64\;kg{\cdot}ha^{-1}$ PB, 그리고 0.04, 0.08, and $0.16\;kg{\cdot}ha^{-1}$ (TE)씩 처리하였다. 한국잔디 '제니스'의 수평생장은 차광정도가 증가함에 따라 감소하였다. 무차광조건에서 0.2, $0.4\;kg{\cdot}ha^{-1}$ FP, and $0.16\;kg{\cdot}ha^{-1}$ PB를 처리한 결과 포복경의 전체 길이와 수가 대조구에 비하여 2배 정도 증가하였다. 77% 차광조건에서는 $0.8\;kg{\cdot}ha^{-1}$ FP를 처리하였을 경우 포복경의 수는 170%, 전체 포복경의 길이는 140%증가하였다. 분얼경수는 무차광조건에서는 $0.8\;kg{\cdot}ha^{-1}$ TE를, 77% 차광조건에서는 $0.16\;kg{\cdot}ha^{-1}$ TE를 처리하였을 경우 각각 40%, 72%의 증가를 보였다. 전체 당함량은 $0.8\;kg{\cdot}ha^{-1}$ FP와 $0.16\;kg{\cdot}ha^{-1}$ TE 처리구에서 대조구 대비 약 50%의 증가를 보였으며, 특이한 것은 비구조성 수화물이 잔디의 잎에서 기는 줄기로 이동하는 것으로 나타나, 이는 한국잔디의 수평생장을 증가시켜 회복속도를 높이는데 도움이 될 것으로 판단된다. 이상의 결과를 통하여 그늘상태에서의 한국잔디의 도장과 줄기밀도의 감소를 방지시키고, 한 포복경의 발달을 촉진시켜 회복력을 높이기 위하여 생장조절제의 처리가 매 효과적인 것인 것으로 판단되었다.