One of the most destructive forces around greenhouses is wind. Wind loads can be obtained by multiplying velocity pressure by dimensionless wind force coefficient. Generally, wind force coefficients can be determined by wind tunnel experiments. The wind force coefficient distribution on a single - span arched greenhouse was estimated using experimental data and compared with reported values from various countries. The results obtained are as follows : 1. The coefficients obtained from this study agree with the values proposed by G. L. Nelson except about 0.5 of difference in the middle region of roof section. This discrepancy is mainly attributed to the dissimilarity of experimental conditions (or wind tunnel test such as Reynolds number, type of terrain, surface roughness of model, location of the lapping and measuring methods. 2. Considering that the wind force coefficients are varied along the height of a wall at wind direction perpendicular to wall, structural analysis using subdivided wind force coefficient distribution is more resonable for wall. 3. It is recommendable that wind force coefficient distribution on a roof should take more subdivision than the existing four equal divisions for more accurate structural design. 4. Structural design using wind forces close to real values is more advantageous in safety and expense.

The Purpose of this study was to establish the belter residential environment in Apt. complex. In this study, the management consciousness of exterior space and the degree of satisfaction were investigated and analyzed on the GI-SAN Apt. complex in Taegu city. The data were obtained through the questionnaire survey about the exterior space of Apt. complex and analyzed by the SPSS/PC. The results of this analysis are as follow; The result of the image analysis were the cleanness factor and the arrangement factor, which have great influenced in residents image of exterior space. The dissatisfaction source of the management conditions were owing to the lake of management techniques and the discord of residents. The subject of management in the residents consciousness was the management office. In additionally, the management form by the residents were highly showed the cleaning and weeding. The main issues of their dissatisfaction about the exterior space was the lake of size, quantity of plants and rest space. The place of the most demand on management was investigated the children playground which was regarded to be the most damaged.

일방향 응고한 AI-CuAI2공정 복합재료의 미세조직에 미치는 응고조건과 진동의 영향에 대해서 조사하였다. 진동하에서 성장속도(R) 변화에 따라 일방향응고 시켰을때 열구배(G)는 32˚C/cm와 35˚C/cm를 유지했다. 공정조직은 성장조건(G/R)에 따라 변화되었다. 조직미세화는 진동의 영향도 컸지만 G/R의 영향이 더 크다는 것을 알 수 있었다. 층상 간격은 λ2 =상수 라는 관계에 따라 성장속도와 더불어 변화 되었다.

D-xylan은 최근 대체 에너지원인 알콜 생산의 기질로서 주목받고 있을 뿐만 아니라 butanol과 butandiol과 같은 유기 용매와 xylitol과 같은 감미료, xylooligosaccharide와 같은 bifidogenic factor 등의 원료로 사용된다. 본 논문에서는 발효된 톱밥으로부터 xylanase 강력 생산성 균주를 분리하고 제 특성을 확인하여 Bacillus sp. GS로 동정하였다. Xylanase 생산성을 높이기 위해 효소 생산 배지 성분과 배양 조건을 최적화 하였는데, 각각 xylan 1.25%, yeast extract 0.1%, NaNO_3 1.2%, K_2HPO_4 0.1%, MgSO_4 0.02%, mineral salt 0.005%와 pH 6.5, 배양 온도 37℃였다.

The Automated Eichner Iris Photometer(AEIP) at the Korea Basic Science Center was tested for its function and the proper procedure for photographic photometry. The AEIP requires about three hours for reaching the electrical stability. When the iris is controlled automatically, the repeatability of density unit (DU) is accurate in the uncertainty of (0.0028∼0.0048 0.0028∼0.0048 )DU. The iris reading is found to be accurate within the mean error of 0.m05 0.m05 , which could be reduced to 0.m02 0.m02 by the manual control. To check the applicability of the AEIP. each two photographic plates for UBV colors which were taken by Dupuy and Zukauskas(l976) for the open cluster Byur 2, were measured by using the AEIP. and the photographic magnitudes and colors of the stars in Byur 2 were determined. discussing the previous results.

The wind pressure distributions were analyzed through the wind tunnel experiment to provide fundamental criteria for the structural design on the three-span arched house according to the wind directions. In order to investigate the wind force distribution, the variation of the wind force coefficients, the mean wind force coefficients, the drag force coefficients and the lift force coefficients were estimated from the experimental data. The results obtained are as follows : 1. The variation of the wind force with the wind directions on the side walls was the greatest at the upwind edge of the walls. The change of pressure from the positive to the negative on the side walls occurred at the wind direction of 30˚ in the first house and 60˚ in the third house. 2. The maximum negative wind force along the length of the roof appeared at the length ratio of 0-0.2, when the wind directions were 90˚ in the first house, 60˚ in the second house and 30˚ in the third house. 3. The maximum negative wind force along the width of the roof appeared at the width ratio and the wind direction of 0.4 and 0˚ in the first house, 0.4-0.6 and 30˚ in the second house and 0.6 and 30˚ in the third house, respectively. 4. The maximum mean positive and negative wind forces occurred at the wind direction of 60˚ and 30˚, respectively, on the side walls of the first house, and the maximum mean negative wind force on the roof occurred at the wind direction of 30˚ in third house. 5. The maximum drag and lift forces occurred at the wind direction of 30˚, and the maximum lift force appeared in the third house. 6. The parts to be considered for the local wind forces were the edges of the walls, the edges of the x-direction of the roofs, and the locations of the width ratio of 0.4 of the first and third house and the center of the width of the second house for the y-direction of the roofs.

The wind pressure distributions were analyzed to provide fundamental criteria for the structural design on the two-span arched house according to the wind directions through the wind tunnel experiment. In order to investigate the wind force distributions, the variation of the wind force coefficients, the mean wind force coefficients, the drag force coefficients and the lift force coefficients were estimated using the experimental data. The results obtained are as follows : 1. The variation of the wind force with wind directions on the side walls was the greatest at the upwind edge of the walls. 2. The maximum negative wind force along the length of the roof appeared at the upwind edge at the wind direction of 60˚. 3. The maximum negative wind force along the width of the roof appeared at the width ratio and wind direction of 0˚ and 0.4 in the first house and 0.6 and 30˚ in the second house, respectively. 4. The mean negative wind force on the side walls of the first house at the wind direction of 0˚ was far greater than that of the second house, and the maximum negative wind force on the roof occurred at the wind direction of 30˚. 5. The maximum lift force appeared on the second house at the wind direction of 30˚, but the lift force on the first house was far greater than that on the second house at the wind direction of 0˚. 6. The parts to be considered for the local wind forces were the edges of the walls, and the edges of the x-direction and the width ratio, 0.4 of the y-direction in the roofs.

기관분화(器官分化)된 유채의 조직으로부터 재분화되는 식물체의 획득빈도를 높이고자 이에 관여하는 몇가지 요인에 대한 실험을 수행하여 얻어진 결과는 다음과 같다. 유채의 종자, 무균배양(無菌培養)된 자엽(子葉), 하배축(下胚軸) 및 엽절편(葉切片)배양에서 명상태에서 보다는 암상태에서 캘러스의 생장이 왕성하였고, 하배축(下胚軸)과 자엽조직(子葉組織)에서 형성된 캘러스에서 shoot 분화능력이 높은 편이었다. 자엽(子葉) 및 하배축(下胚軸) 조직(組織)의 캘러스형성에는 2, 4-D 단용보다 2, 4-D와 kinetin 또는 BAP를 혼용하는 것이 효과적이었으며, 자엽조직(子葉組織)의 경우는 2, 4-D(1.0 mg/)와 0.1mg/의 kinetin이 첨가된 배지에 형성된 캘러스를 0.1mg/의 NAA와 2.0 mg/의 kinetin이 첨가된 배치에 이식하였을 때 shoot 분화율이 16.7%로 가장 높게 나타났다. 하배축(下胚軸) 조직(組織)에서는 1.0mg/의 2, 4-D와 0.5mg/의 kinetin이 첨가된 배지에서 형성된 캘러스를 0.1mg/의 NAA와 4.0mg/의 kinetin이 혼용된 배지에 이식하였을 때 shoot 분화율(分化率)이 24%로 가장 높게 나타났다. 자엽(子葉) 및 하배축(下胚軸) 조직(組織)의 캘러스 형성과 shoot분화능력의 유채 품종간(品種間) 차이는 매우 뚜렷하게 인정되었고, 자엽(子葉)보다는 하배축(下胚軸) 조직(組織)에서 형성된 캘러스에서 shoot 분화능력이 현저히 높게 나타났다.

This study was carried out to find out the effect of dietary intake on cognitive function retardation in old age using dietary survey and cognitive function test. The subjects were 332 men of 50-94 years old and their activities of daily living were very similar. The cognitive function was tested by Mini Mental State Examination (MMSE)-K which was translated from MMSE, and the 24-hour recall method was used for dietary survey. Scoring of MMSE-K was a little different from MMSE, that is, in case of no education, one to four points were added to exclude the effect of education which has been considered as a confounder by many researchers. The number of subjects belonging to below 23 of MMSE-K score was increased by increasing age. Even though points were added in case of no education, the ratio of below 23 MMSE-K score group was diminished by increasing education. Therefore, education seems not to be a confounder but a independent variable on cognitive function. Income, past occupation, family type, self-evaluated health status did not play any effect on cognitive function significantly. On the other hand, the correlation between each nutrients and the score of cognitive function test showed that the more consumption of vitamin A and protein, the higher cognitive function score was obtained. In case of iron and Ca, even though it was not statistically significant, there was a tendency of increasing cognitive function score by increasing the intake of those nutrients. This study suggests that micronutrient intakes might be more related to cognitive function than macronutrients.

고추가루의 소비자 선호도를 평가하기 위한 객관적 방법을 확립하기 위하여 10품종 건조 고추의 일반특성(크기, 모양, 함량비)과 고추가루의 일반성분, 카로티노이드의 함량, Hunter색치(色値)를 측정하였고 100명의 주부를 선정하여 관능검사를 실시한 결과와 물리적, 화학적 측정치와의 관계를 비교하였다. Red carotenoid는 총 carotenoid의 68-85%를 차지하였으며 β-carotene 함량은 관능적 선호도와 유의적인 상관관계를 나타냈고 Hunter 색차계(L,a,b,axL)의 값은 관능적 색선호도와 높은 상관관계를 나타내었다. 특히 axL값은 고추의 매운 강도 및 색 선호도와 높은 상관관계를 나타냈다. 따라서 고추가루의 소비자 선호도는 colorimeter에 의한 axL값에 의해 결정될 수 있다. Sensory acceptability=0.02001(axL)-12.5774

The wind pressure distributions were analyzed to provide fundamental criteria for the structural design on e single-span arched house according to the wind directions through the wind tunnel experiment. In order to investigate the wind force distributions, the variation of the wind force coefficients, the mean wind force coefficients, the drag force coefficients and the lift force coefficients were estimated by using the experimental data. The results obtained are as follows: 1. When the wind direction was normal to the wall, the maximum positive wind pressure along the height of the wall occurred approximately at two-thirds of the wall height because of the effects of boundary layer flow. 2. When the wind direction was 30˚ to the wall, the maximum positive wind force occurred at the windward edge of the wall. When the wind direction was parallel to the wall, the maximum negative wind force occurred at the windward edge of the wall. 3. The maximum negative wind force along the width of the roof appeared around the width ratio, 0.4, and that along the length of the roof appeared around the length ratio, 0.5. 4. According to the results of the mean wind force coefficients analysis, the maximum negative wind force occurred on the roof at the wind direction of 30˚. 5. The wind forces at the wind direction of 30˚ instead of 0˚ are recommended in the structural design of supports for a house. 6. To prevent partial damage of a house structure by wind forces, the local wind forces should be considered to the structural design of a house.

We investigate the forms, the inquiry levels and the objective types in the inquiry activities of the Earth Science text book (Science I HA) that was reorganized at March, 1988 from the eight publishers, according to the reference of Schwab's(1966) inquiry level of experiment and the Klopfer's (1971) classification of objectives of science education. Ninty seven percents of the experiments belong to the 1st level of the Schwab' s(1966) inquiry level and there are no activities of the 3rd level. On the basis of Klopfer's classification, ninty eight percents of the inquiry objectives are included in the only four kinds (A.O, B.O, D.O, G.O) of the nine objectives, and the rest (C.O, E.O, F.O, H.O, I. O) of the important objectives that are indispensable to the inquiry process seems to be exclusive. Conclusively speaking, the inquiry ability of the students may not be cultivated by the experiments in present text-book.