• 한국식품조리과학회지
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• 제15권4호
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• pp.377-381
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• 1999

This study was designed to observe the effect of the amount of egg and the specific gravity on the quality of sponge cake. There was a little difference of the moisture content by the specific gravity when the amount of egg was same. However, as the amount of egg was increased at the same specific gravity, the moisture content and baking loss was significantly increased(p<0.05). At 100% of egg amount, the largest specific loaf volume was gained at 0.55 of specific gravity, in the same way 150% at 0.45, 200% at 0.35, 250% at 0.45, The hardness of sponge cake was increased as the specific gravity was increased at the same amount of egg(p<0.05). The specific gravity which the lowest hardness was gained was 0.55 with 100% of the amount of egg, in th same way 0.45 with 150%, 0.35 with 200%. As the period of storage was longer, the increase of hardness was increased as the specific gravity went up at the same amount of egg(p<0.05). Therefore, in the case of sugar content 166%, the specific gravity with maximum specific loaf volume and minimum hardness was gained 0.55 at the amount of egg 100%, 0.45 at 150%, 0.35 at 200% and 0.35 at 250%.

• 한국산림과학회지
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• 제89권3호
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• pp.297-305
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• 2000

이 연구는 북한산국립공원(北漢山國立公圓) 북동사면(北東斜面) 일대(一帶) 계류수질(溪流水質) 오염(汚染)에 영향(影響)하는 인자(因子)를 파악함으로써 국립공원내 계류수질 보전을 위한 과학적 기초 자료를 제공하기 위하여 1998년 7월부터 1999년 11월까지 수행하였다. 계류수질오염(溪流水質汚染)을 판단하는 지표(指標)인 전기전도도(電氣傳導度)의 설명에 유의한 영향을 미치는 인자는 탐방객수와 $Cl^-$ 점유비 등 2개 인자로 5% 수준에서 유의하여 북한산국립공원을 이용하는 탐방객수(探訪客數)의 증가(增加)는 계류수의 전기전도도(電氣傳導度)를 상승시켜 계류수질(溪流水質) 오염(汚染)에 영향(影響)을 미치는 것으로 분석(分析)되었다. 다중회귀분석결과 용존산소포화도의 설명에 유의한 영향을 미치는 인자는 용존산소량과 수온 등 2개 인자로 1% 수준에서 유의하였다. $Cl^-$의 설명에 유의한 영향을 미치는 인자는 전기전도도, $K^+$, $Na^+$, $SO_4{^{2-}}$, 이온총량, $Cl^-$점유비, $SO_4{^{2-}}$점유비 등 7개 인자로 5%, 1% 수준에서 유의하였다. 또한, $NO_3{^-}$의 설명에 유의한 영향을 미치는 인자는 $Na^+$, $Ca^{2+}$, $SO_4{^{2-}}$, $Cl^-$점유비, $NO_3{^-}$점유비 등 5개 인자로 5%, 1% 수준에서 유의하였으며, $SO_4{^{2-}}$의 설명에 유의한 영향을 미치는 인자는 $NO_3{^-}$, 이온총량 등 2개 인자로 5% 수준에서 유의하였다.

• 한국보건간호학회지
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• 제10권2호
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• pp.51-60
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• 1996

This study was conducted to provide basic knowledges of effective environmental control of patients with allergic rhinitis. From July to October 1995, 58 dust samples Were drawn from the bedrooms of patients with allergic rhinitis who were registerd at an allergy clinic of a hospital. Those samples were examined for the amount of house mite allergens & dusts. The data were analysed by using ANOVA and Pearson correiation coefficients. The results were as follows : 1. As for the amount of house mite allergens in terms of environmental factors, the amount of house mite allergens of using washing water temperature of bedding above than $55^{\circ}C$ was significantly lower than that of below $54^{\circ}C$. Other environmental factors such as type of house, area of bed room floor, bed in bedroom, bedroom cleaning by vacuum cleaner, days after bedding washing, relative humidity of bedroom were relate to the amount of house mite allergens. 2. As for the amount of dusts in terms of environmental factors, the amount of dusts of days of days after bedding washing more than 15 days was significantly lower than thant of less than 15days. Other environmental factors such as type of house, area of bedroom floor, bed in bedroom, bedroom cleaning by vacuum cleaner, was hing water taemperature of bedding, relative humidity of bedroom were not relate to the amount of dusts. 3. There was a significant positive correlation between the amount of house mite allergens and the amount of dusts. It may be conclusively said. the amount of dusts and house mite allergens were closely associated with the washing temperature and days after washing of bedding. Hence. intensive instruction for the methods of bedding washing was needs of the patients with allergic rhinitis.

• 한국환경과학회지
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• 제20권12호
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• pp.1553-1560
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• 2011

The study analyzes groundwater balance with regard to the water recharge and discharge which contain urbanization components in Suyeong-gu, Busan. It also verifies the reliability and accuracy improvement on the analysis of the balance. The result of the study is viewed as preliminary data which are useful to develop, utilize and manage groundwater. The average quantity of groundwater recharge is 6,014.1 $m^3$/day in the research area during the last ten year period(from 1998 to 2007). The outflow from drainage areas to rivers and coasts is 149.3 $m^3$/day, the inflow from rivers and coasts to drainage area is 439.9 $m^3$/day. The use of the water is 4,243.0 $m^3$/day. The outflow caused by subway in line No.2 and No.3 through Suyeong-gu and the one by building an underground electric complex is 1,500.0 $m^3$/day. The leakage of water works is 6514.9 $m^3$/day. The inflow and outflow of sewerage is 5082.2 $m^3$/day from groundwater to sewer. The amount of groundwater recharge, the inflow from rivers and coasts to drainage area, and the leakage of water works belong to the amount of groundwater inflow and the total amount is 12,968.9 $m^3$/day. The amount of outflow from drainage area to rivers and coasts, the use of groundwater, outflow by subway and underground electric complex tunnel and the amount of inflow of the water to sewerage belong to the amount of outflow of groundwater and the sum amount is 13,031.5 $m^3$/day. The gap between the amount of inflow and outflow of groundwater is 62.6 $m^3$/day, which is considered to reflect the trend that the short term drop in the amount of rainfall results in the amount of groundwater recharge and that the amount of outflow from drainage area to rivers and coasts decreases.

• 농업과학연구
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• 제40권3호
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• pp.203-208
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• 2013

Differences in the filling amount of substrates in container can influence severely on the soil physical properties and crop growth. This research was conducted to secure the fundamental informations related to the changes in soil physical properties as influenced by the filling amount of coir dust-based substrates in container. For the experiment, three substrates were formulated by blending coir dust (CD) with expanded rice hull (CD+ERH, 8:2, v/v), carbonized rice hull (CD+CRH, 6:4, v/v) or ground and aged pine bark (CD+GAPB, 8:2, v/v). Based on the optimum bulk density, the amount of substrates filled in 347.5mL aluminum cylinder were adjusted to 90, 100, 110, 120, and 130%. Then the changes in total porosity (TP), container capacity (CC), and air-filled porosity (AFP) by various filling amounts were measured. The TP decreased linearly in CD+ERH and CD+GAPB and quadratically in CD+CRH as the filling amounts of the media increased from 90% to 130%. The CC in CD+ERH and CD+GAPB media increased as the filling amount increased from 90% to 120%, then decreased in 130%, showing quadratic change. The CC in CD+CRH was the highest in 90% filling amount and decreased gradually as the filling amount of root medea increased. The AFPs in CD+ERH and CD+GAPB media were 38 and 37%, respectively in 90% filling amount and they decreased drastically until 110% filling, then gradually in 120 and 130% filling amount showing the quadratic changes. The AFP of CD+CRH at 90% filling amount was 22% and it decreased as the filling amount increased until 130%, showing linear change. These results indicate that the increase in filling amount of substrates influenced more severely the AFP than CC, and careful consideration on container filling is required to provide a better root condition thus maximize crop growth.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.63-63
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• 2022

Wheat flour can be categorized into bread, all-purpose, cake flour according to its protein content. Since optimal wheat flour protein content is different for each end use, it is necessary to diversify the nitrogen fertilizer methods depending on the end use and cultivar. Optimal wheat flour protein content of soft wheat (for cake flour) is lowest (<=10%) among all end use, it is necessary to develop nitrogen fertilizer methods for high yield and low protein content. In order to analyze the yield and quality changes of soft wheat as nitrogen fertilizer amount and splitting timing, soft wheat cultivar 'goso' was sown on paddy soil in jeunju, Republic of Korea ('21.10). the amount of nitrogen fertilizer was divided into 4 levels by adjusting 2kg/10a increments from 5.1 to ll.lkg/lOa, and in the N 7.1 and 9.1 kg/1 Oa(standard) treatment, N amount divided into sowing date:regrowing stage=3:7,4:6(standard), 5:5. In regrowing stage, Tiller number and N fertilizer amount at sowing date showed a correlation; y=-121.14x²+792.66x-525.41 (R²=0.77^*, y: Tiller number/m², x: N amount at sowing date(kg/10a)). Tiller number in regrowing stage was the highest when the nitrogen fertilizer amount at sowing date was 3.23kg/10a. spike number per m² was the highest when N fertilizer was divided into sowing date:regrowing stage=3:7(N amount: 9.1kg/10a). If N fertilizer amount was fixed, grain yield was also the highest when N fertilizer was divided into sowing date :regrowing stage=3:7. Also, N amount at sowing date and grain yield showed no correlation, but N amount at regrowing stage and grain yield showed significant correlation. As N amount increased, protein content also showed a tendency to increase.

• 설비공학논문집
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• 제13권1호
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• pp.66-71
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• 2001

In the air-conditioning industry, the refrigerant charging amount is one of the most important parameters affecting the energy efficiency ratio of heat pumps. An experimental study was performed on the characteristics of an inverter driven air-to-air heat pump system with a variation of compressor frequency and charging amount of refrigerant. The frequency was altered from 40Hz to 70Hz and the charging amount was changed from 1.6kg to 2.8kg in tests. The variation of performance was measured with switching of the expansion valve on each frequency and charging amount. All the tests were performed at the Korean Standard and test conditions of the air conditioners. As results, it was found that there existed the charging amount and the level of the suction gas superheat which provided the highest energy efficiency ratio at all the frequency bands.

• 부모자녀건강학회지
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• 제3권1호
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• pp.46-59
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• 2000

The purpose of this study is to determine whether the NCASA (Nursing Child Assessment Sleep/Activity Record) would be suitable to evaluate and to provide the basic resources for a Korean model of sleep/activity patterns during the first 6 months Korean infants' lives and to provide a basis for nursing intervention for mothers of early infants. The subjects of this study were 94 normal infants from birth to 6 months of age who visited the postpartum care center and two general hospitals located in Pusan from February 1 to April 28, 2000. The method of data collection was through convenient sampling. The instrument of this study was the NCASA translated by the Korean parent Child Health Academic Association. The collected data were analysed by mean, standard deviation, frequency percentage and ANOVA, Post Hoc test by use of SPSS/PC. The conclusions obtained from this study are summarized as follows: 1. The mean amount of daytime sleep was 8.06 hours. The mean amount of nighttime sleep was 6.31 hours. The mean amount of total daily sleep was 14.37 hours. The mean of the longest sleep period was 5.20 hours. The mean regularity of daytime sleep was 25.84%. The mean regularity of nighttime sleep was 77.69%. The mean regularity of total daily sleep was 42.60%. The mean frequency of nighttime wakenings was 2.33 times. 2. The mean amount of daytime activity was 8.25 hours. The mean amount of nighttime activity was 1.39 hours. The mean amount of daily total activity was 9.64 hours. The mean of the longest activity period was 3.80 hours The mean frequency of daytime feeding was 5.69 times. The mean frequency of nighttime feeding was 2.08 times. The mean frequency of total daily feeding was 7.74 times. The mean frequency regularity of feeding was 54.62%. The mean frequency of wakenings was 5.14 times. The mean frequency of crying was 1.90 times. 3. According to an analysis of sleep patterns based on an infant's age, there were some significant differences in the following factors: amount of daytime sleep(p<.001), amount of night time sleep(p<.05), amount of total daily sleep (p<.001), longest sleep period(p<.001), regularity of daytime sleep(p<.001), regularity of nighttime sleep(p<.01), regularity of total daily sleep(p<.001), frequency of nighttime wakenings(p<.001). 4. According to an analysis of activity patterns based on an infant's age, there were some significant differences in the following factors: amount of daytime activity(p<.001), amount of nighttime activity(p<.01), amount of total daily activity(p<.001), longest activity period(p<.05), frequency of nighttime feeding(p<.01), frequency of wakenings(p<.001). 5. The mean amount of a mother's day time was 16.30 hours. The mean amount of a mother's night time was 7.70 hours. In conclusion, the initial irregular sleeping and activity patterns of the early infant became regurized as the infant grew older and estabilished firmer patterns of sleeping and of activity.

• 복식
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• 제47권
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• pp.73-88
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• 1999

To find the reasonable gathering amount by a length of gathered skirt and a fabric the methods of this study were divided on three types-five kinds of the gathering amounts three kinds of fabrics and three kinds of skirt length-so forty five kinds of the samples were made. As the visual evaluation and the shape of hemlines evaluation of the gathered skirt were practiced by these factors this study found the aesthetical gathering amount and analyzed the shape of hemlines. The following are the results of this research. 1. In the same fabric and skirt length to estimate a hemlines shape of a gathered skirt the increased amount of the node number of cotton fabric was widest and wool fabric was most stable And when the gathering amounts of each fabric were higher than 1.5 times the node indexes were no difference. According as a skirt length was longer the node indexes assumed a similar aspects but according as the skirt length was shorten an the gathering amount was smaller the node shapes were level and broad. And according to being increased a gathering amount the width of right and left of gathered skirt was generally wider. 2. In the same gathering amount and skirt length in seeing the estimation of a hemlines shape of a gathered skirt when the skirt length was 40cm in cotton polyester wool fabrics the node indexes were similar at up to 1.5 times of gathering amount and especially it became very bigger at 0.5 times and according as the gathering amount was increased node index became gradually smaller. The width of right and left of the skirt hemlines of wool fabric was more smaller than polyester and cotton fabrics so it is happen to hang down. 3. In the same gathering amount and fabric in seeing the estimation of a hemlines shape as a variation of a skirt length when the gathering amount of cotton and polyester was from up to 1.5 times and wood fabric was from up to 1.0 times according as skirt length was longer node index in the same gathering amount was decreased. And in case as it was 0.5 times the node indexes of the 40cm and 60cm skirt length were bigger than other factors. In the same gathering amount the width of right and left of the skirt hemlines was smaller at 60cm skirt length and polyester fabric was smaller at 80cm skirt length.

• Korean Chemical Engineering Research
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• 제53권2호
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• pp.181-192
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• 2015

본 연구는 Liquid Crystal Display (LCD) 세척 후 발생하는 Propylene Glycol Monomethyl Ether Acetate (PGMEA)폐액 재활용을 위한 2기 증류탑을 사용하는 공정의 최적 조건을 산출하였다. 공정조건 최적화 기법으로 다중회귀분석을 이용하여 1차 증류 시 Bottom 온도(BTM 온도), Reflux 량, Feed 량 및 Feed 온도에 따라 PGMEA 함량에 대한 최적 조건과 2차 증류 시 BTM 온도, Reflux 량, Feed 량에 따른 PGMEA 함량에 대한 최적 조건과 공정인자를 산출하였다. 1차 증류탑의 공정인자 중 Reflux 량, Feed 온도 및 Feed 량이 중요한 인자로 산출되었다. 본 연구의 공정조건 범위에서는 BTM 온도범위가 PGMEA함량에 크게 영향을 주지 못하였다. 따라서 최적 공정 조건은 Feed 량 $5,700{\ell}$, Reflux 량 $2,500{\ell}$, BTM 온도 $165^{\circ}C$ 및 Feed 온도 $130^{\circ}C$이며 이때 예측된 PGMEA 함량은 92.12~94.62%로 산출되었다. 2차 증류탑에서는 Reflux 량이 함량에 많은 영향을 미치고 있으며, Feed 량과 BTM 온도도 영향을 미치는 인자로 산출되었다. 다중공선성(Multicollinearity)이 Reflux 량과 BTM 온도 간에 강한 양의 상관관계가 있어, 두 인자 중 다중회귀식에 영향이 지배적인 인자 하나를 선택하였으며, 최적조건은 BTM 온도 $199^{\circ}C$ 기준에서 최적 공정 조건은 Feed 량 $4,275{\ell}$ 및 Reflux 량 $6,200{\ell}$이며, 이때 예측 PGMEA 함량은 99.0~99.5%로 산출되었다.