• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.4 no.1
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• pp.41-46
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• 2001

Purpose: We studied to know the effect of early feeding on the course and the recovery of acute diarrheal disease. Methods: The study was conducted on 76 patients who admitted to the Soonchunhyang university hospital for acute diarrhea. We divided 76 patients into 3 dietary groups (whole milk group (WMG): 35, diluted milk group (DMG): 29, breast milk group (BMG): 12). We compared three groups by numbers of diarrhea, numbers of vomiting, calory intake, weight increments, and duration of diarrhea. Results: 1) The mean age was $16.45{\pm}18.20$, $11.53{\pm}9.80$, $5.38{\pm}5.01$ months for WMG, DMG, and BMG, respectively. The mean weight was 9 kg and the mean duration of diarrhea was 2.29 days. 2) The numbers of diarrhea during admission was not significantly different in the three groups. 3) The calory intake during admission was significantly low in DMG. 4) The weight increments during admission was significantly low in DMG. 5) The duration of diarrhea during admission was not significantly different in the three gourps. Conclusion: Early refeeding with whole milk or breast milk did not prolong or worsen the course or symptoms of diarrhea compared with gradual reintroduction with diluted milk. But there were advantages of improved nutrition and weight increments. Futher study is necessary to demonstrate the effect of diet according to the causative organisms.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.8 no.4
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• pp.573-580
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• 1998

Self-propagating high temperature synthesis (SHS) technique was used to synthesize the spinel phase of $MgAl_2O_4$ from MgO and Al powder. Thermit reaction products of MgO and Al, The reaction products were heat treated at the temperature $800^{\circ}C$ preheating. Processing factors such as DTA/TG, combustium product and maxium temperature, synthesis of MgO and Al from "$MgO+2Al+3/2O_2$\rightarrow$MgAl_2O_4$". An activation energy (${\Delta}H^{\circ}$)-264.8 kcal/mol and reaction of maxium temperature 5634 K was calculated to form a $MgAl_2O_4$ spinel from unreacted materials. Pellet were increased volume 6% after thermit reaction. reaction.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.3 no.1
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• pp.1-11
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• 1993

A suppression of turbulent fluid motion and a control of oxygen and dopants could be improved by application of magnetic field in Czochralski growth of silicon. The effect of an axial magnetic field on Czochralski system was numerically calculated. The fluid motions induced by temperature gradients and by crystal and crucible rotations were suppressed by magnetic force. The S/L interface was gradually flattened in proportion to the increase of magnetic field due to a reduced ascending velocity in the vicinity of center line. The t.emperature distributions in the melt at 8=0.3 Tesla were similar to those analyzed by the conduction heat transfer only. The dissipated amounts of heat flux from melt and crystal surfaces by Ar gas blowing was Jess than 3 %.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.3
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• pp.416-425
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• 2011

The objective of this study was to investigate the effects of vegetarian (lacto-ovo vegetarian) and non-vegetarian diets on dietary habits, nutrient intake, and health status. The vegan subjects were 22 children. Among them, 54.5% of the subjects had a specific religion, 36.4% had been vegetarian since weaning, and 9.1% had become vegetarian to prevent obesity or atopy. The percentages of excessive eating by the vegetarian children were lower compared to the non-vegetarian children. The rates of intake of vegetables (42.2%) and fruits and fruit juice (55.9%) by the vegetarian children were higher compared to non-vegetarian subjects. Non-vegetarian children consumed more milk, dairy products, as well as meat, fish, eggs, soybean, and tofu than the vegetarian subjects. Vegetarian children ate more bread, potato, and fruits as snacks than non-vegetarian children. Furthermore, non-vegetarian children consumed more carbonated beverages and ice cream than the vegetarian subjects (p<0.05). Generally, the subjects' energy intake was lower than standard values, and vegetarian children's calcium intake was deficient. Non-vegetarian children's fiber intake was deficient, and they consumed fat, vitamin $B_2$, calcium, and cholesterol excessively (p<0.05). Nutrition tablet intake was higher among non-vegetarian children; however, the rate of fatigue among subjects was higher among vegetarian subjects than non-vegetarian subjects. Among the vegetarian subjects, 19.6% reported that they had a cold. Consequently, for the purpose of attaining balanced physical development and growth among children, an education program that emphasizes complete diets should be prepared.

• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.5
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• pp.855-864
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• 1996

The purpose of this study is to evaluate nutritional status of tube feeding patients, and to investigate the effects of giving enteral nutritional support to them. 83 in-patients have been examined for their nutritional status. The mean caloric density was 0.77kca1/m1. 36.1% to 75.9% of them were malnourished in terms of biochemical assessment. The energy intake showed the significant and positive correlation in all biochemical parameters. And the protein intake showed the significant and positive correlation in total protein, serum albumin, serum iron, hemoglobin, hematocrit and TLC. But age was correlated negatively to serum albumin and transferrin. The amount of energy and protein intake has been significantly increased as the tube feeding duration became longer. Also the effect of enteral nutritional support for 6 weeks has been investigated. Case group(n=8) was administered 250kca1 of polymeric formula in addition to their usual diet, while control group(n=8) kept the amount of their original intake. When comparing the biochemical changes of the case group and those of control group at week 0 and week 6 respectively, it showed significant differences in total protein, serum transferrin and TLC. This study suggests that the malnourished status of tube feeding patients can be improved and even prevented if nutritional support is properly administered.

• Journal of Nutrition and Health
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• v.50 no.1
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• pp.85-97
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• 2017

Purpose: This study was conducted to investigate dietary habits related to weight reduction and snack intake habits of $4^{th}$ to $5^{th}$ grade elementary students located in Jeju-si, Jeju, South Korea. Methods: The $4^{th}$ and $5^{th}$ grade elementary school students (total n = 234, equally matched numbers of normal weight children and overweight/obese children (n = 117/group)) were surveyed using a questionnaire and a 24-hour dietary recall method in Oct 2015. Results: The percentage of students who experienced reduced food intake to control weight was 26.3% in the normal weight group (NG) and 77.6% in the obese group (OG). Most frequently answered meal for reduced intake was snacks in the NG and dinner in the OG. Percentages of daily calorie intake among subjects were 17.2% for breakfast, 33.8% for lunch, 29.7% for dinner, and 19.3% for snacks. Frequency of snack intake was 2.1 times a week in NG and 1.6 times a week in OG, which showed a statistical difference between body weight groups. Types of snack foods were distinctly different depending on where children consumed them, although no difference was observed between NG and OG. In addition, snack intake level of low energy and nutrient-dense foods was significantly lower in the OG compared to the NG, whereas snack intake level of energy dense and low-nutritive foods was not different between the OG and NG. Conclusion: Taken together, snack intake level with consideration of frequency and amount of snack intake showed that children in the OG consumed significantly less low energy and nutrient-dense foods compared to the NG. Therefore, nutritional education for choosing healthy snack foods for children regardless of body weight status is crucial based on family-school links.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.1 no.1
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• pp.74-81
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• 1991

The temperature profile of Czochralski single crystal growth system was simulated considering the fluid flow and surface radiation heat transfer. View factors of surface elements were calculated for radiation heat transfer. Two phases(solid and liquid) were treated as a continuous phase by assigning artificial large viscosity to the solid phase and latent heat was accounted by iterative heat revolution method. The solidification model was applied to solid front of the pure Ga during the melting to verify the model. The whole simulation model of CZ system was applied to the growth Al single crystal.

• Proceedings of the KSME Conference
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• 2000.04a
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• pp.91-96
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• 2000

Glass fiber reinforced thermoplastic composites were manufactured by Rapid Press Consolidation Technique(RPCT) as functions of temperature, pressure and time in pre-heating, consolidation and solidification sections during the manufacturing processing. It was found that the material property is greatly affected by pre-heating temperature under vacuum, mold temperature and molding pressure. Among them, the temperature In the mold was the most critical factor in determining the mechanical properties and the molded conditions of specimen. The crystallinity of PET matrix was also investigated by differential scanning calorimetry(DSC) measurements for various processing conditions. The level of crystallinity($X_c$) depended strongly on the mold temperature, cooling rate and the type of composite. The difference in $X_c$ is believed to be one of important factors in characterizing the mechanical properties.

• Journal of Nutrition and Health
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• v.12 no.2
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• pp.15-17
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• 1979

어린이 영양식의 개발이란 제목을 놓고 생각할 때 우선 우리나라 식생활의 현상과 문제점을 알아야 하겠다. 식생활 현황을 볼 때 곡식 편중식 Pattern이 일부계층에서는 붕괴하기 시작하고 구미풍 Pattern내지는 이 양자간의 변형 Pattern이 흔재함을 볼 수 있다. 그러나 대부분은 곡식 편중식 Pattern을 따르고 있어서 열량구성면으로 볼 때 당질쪽으로 치우쳐 불균형을 이루고 있다. 그 결과 비타민류 특히 A, $B_2$, Ca, Fe, 지방, 단백질 특히 등물성 단백질 섭취량이 부족이 지적되고 있다. 당질의 섭취과다는 경제수준과 직결되는 문제이므로 값싼 단백질 식품의 선택이 무엇보다도 중요하다. 위와같은 영양문제를 해결하는 방안으로써 식생활을 경시하던 전통적인 의식 구조를 변혁하여야 할 것과 값산 단백질 식품을 선택하여 그 이용법을 연구할 것과 영양, 경제, 저장성 여러면으로 보아 용도가 높은 대두와 관유의 이용방법에 대하여 고찰하였다. 어린이를 위한 영양식 채발을 위하여 좀 더 현실에 맞는 연구 결과가 아쉽다.

• Journal of Welding and Joining
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• v.8 no.3
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• pp.24-30
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• 1990

2024 Aluminium was welded by domestic manufactured continuous type friction welder. The problems and optimum condition were studied in 2024 Al-2024 Al cases. Mechanical tests and microstructure analysis were studeid. Interfacial temperature of welding was predicted by FDM. The obtained results are as follows: 1) In case of Al-Al, the optimum condition range was wide. 2) At the boundary zone, fine recrystallized zone was not harmful to the mechanical property and no growth of precipitation was observed. 3) In case of Al-Al, temperature gradient can be predictedby FDM and heat input can be taken as weld parameter.