• Journal of Sericultural and Entomological Science
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• v.9
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• pp.43-47
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• 1969

This experiment was carried out to investigate the effect of gamma ray on the eggs of later stage in late fall rearing season. The results are summarized as follows: 1. The duration of larval stage was simmilar to that of control in any dose. The silkworm growth was uniform in does of 4,000 gamma ray, but in does of 8,000r 16000r was irregular. There were not malformed silkworms but many small silkworm. 2. Mortality of silkworms was very high 8,000r and over; virus diseases of 87.6 per cent, flacherie of 5.9 per cent and complication of 6.5 per cent. 3. The more the dose of gamma ray became, the lighter the weight full grown silkworm and matured silkworm became. 4. The uniformness of cocoons was registered in dose of 2,000r and the cocoons were irregular or small in dose of 16,000r

• Journal of Nutrition and Health
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• v.10 no.1
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• pp.10-17
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• 1977

This study was designed to compare the Biological effects of the cereals and legumes Proteins on albino rats. Fifty weaning albino rats weighing $49\;gr{\pm}2$ in both sexes were divided into 5 groups and fed corn crude protein diet, wheat crude protein diet, soybean protein diet, yeast diet and 30% sugar-casein diet for the control group. The protein contains same levels with isocaloric values each diet. After 12 weeks the rats were sacrificed for chemical analysis and the results are as follow ; 1. The highest food consumption was found in the groups of yeast and soybean, and the lowest was found in the groups of wheat diet and corn diet. 2. The groups of yeast & soybean protein showed the highest body weight increase, while the groups of wheat diet and corn diet showed the lowest. 3. Highly significant difference was found between the standard group and the groups of corn protein and soybean protein in Food Efficiency Ratio. (F. E. R.) (p<0.01). 4. Protein Efficiency Ratio showed a similar pattern as the F.E.R., however, there was no significant differences among the groups. 5. The kind of diets did not influence the hematology of the subjects. 6. The rate of nitrogen retention of male standard group was lower compared with all the experimental groups (p<0.01), and that of female soybean group was higher than any other groups (p<0.01). 7. Female corn diet group had the lowest organ weights, as found in the growth rate, which was significant (p<0.01). In the male corn diet group only the kidney showed significantly low in weight (p<0.01), and the spleen of male yeast group was also shown low with significance (p<0.01). 8. Nitrogen retentions of the liver and muscle in male corn diet group were lower than any other groups (p<0.05), and the brain nitrogen content of female standard group was high with significance (p<0.01). According to the results above, yeast and soybean protein can be regarded as a nutritious and also inexpensive protein sources.

• Journal of Nutrition and Health
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• v.4 no.4
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• pp.29-38
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• 1971

A survey on 4,117 (Boys:2,004, Girls:2,113) High School students in an urban area was conducted for assessing their physical growth, development and nutritional status from may throuth june 1971, and the following results were obtained. 1. Physical Growth and Development. a) Maximum growth was seen during the period from 12 to 16 years of age. b) The Maximum annual growth rates were as follows; Height: Boys-8.1cm from 14 to 15 years of age Girls-4.7cm from 13 to 14 Weight: Boys-8.0kg from 14 to 15 Girls-4.5kg from 13 to 14 Chest Girth: Boys-6.1cm from 14 to 15 Girls-4.2cm from 13 to 14 Sitting Height: Boys-4.6cm from 14 to 15 Girls-2.5cm from 13 to 14 c) The greatest individual differences in growth and development were observed during 12-15 years of age. d) Korean students were shorter than Japanese in 12-16 years of age group but after 17, Korean students become taller than Japanese. e) The standards of growth of rescent urban korean students show much improved than that of 1955. 2. Various Indices about Physical Growth and Development. a) Relative body weight was increased steadily annually and the crossing point of boys and girls appeared at age 11 at which girls surpassed boys and at 14, boys surpassed girls. b) Relative chestgirth showed narrow chest style in boys from 11 to 15 and from 11 to 14 in girls. c) The average relative sitting height was 54.0 in both sexes. d) The $R\ddot{o}hrer$ index was 1.1 in boys and 1.2-1.3 in girls. e) The Kaup index was lower than 2.0 in boys from 11 to 16 and in girls from 11 to 14. It becomes higher than 2.0 after 17 in boys but in girls after 15.

• Korean Journal of Community Nutrition
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• v.3 no.2
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• pp.174-189
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• 1998

The purpose of this study was to evaluate the nutritional status and growth of Korean infants, who were atending peripheral community clinics in low income areas, by anthropometric measurements and estimating dietary intakes. Dietary intakes and growth were compared among different feeding patterns of 143 infants until age 9 months. The overall mean nutrient intakes of infants in this study were below the recommended allowances except the calcium intake from significant difference in each groups; however, calcium, zinc and iron intake of the formula fed infant(FF) was higher than the breast fed infant(BF) or the mixed fed infant(MF). Form ages 4-6 months, the nutrient intakes were shown to be higher in groups that were given supplementary foods than groups that were not. From ages 7-9 months, all nutrient intakes were higher in or the formula and supplementary foods fed(ESF) infants than in the breast and supplementary food(BSF) or the formula and supplementary food(FSF) groups, All subjets in this study showed a large Z-score. The growth of infants up to 6 months of age showed no significant difference in the feeding pattern, however, after 7 months of age the BSF group had significantly lower weight than the FSF or the ESF groups, There were significant positive relationships between infants weight gain at age 7-9 months from birth and the current protein or zinc intakes. As a result the average status of nutrient intakes of infants in this area was loser than the RDA, however, the growth pattern was fairly good. Although the breast milk is beneficial for infants, mothers should be educated for the importance of supplemental food and its practice to support good mutrition(Korean J Community Nutrition 3 (2) : 174-189, 1998)

• Journal of Nutrition and Health
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• v.15 no.1
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• pp.70-79
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• 1982

Using dietary, anthropometric, and biochemical methods of evaluation, a nutritional survey was made of 81 seven-and eight-year-old children from two schools with different socioeconomic backgrounds in Daejon city, during the October of 1980. All the children were tall and heavy in comparison with 1976 Korean standard. School A children with relatively high socioeconomic levels showed higher value in length and lower value in weight than school B children with relatively low socioeconomic levels. Mean hemoglobin values were 13.3 (school A) and 12.8 (school B) g/100 ml and hematocrits were 39.7 and 37.9%, respectively. Anemic children were not many in both schools ( A ; 0-25%, B ; 12.5-15.0% ). Urea nitrogen/creatinine ratios were 9.2 (A) and 7.8 (B). The intake of animal foods was higher in school A owing to the higher intake of milks. The intakes of all nutrients except energy and calcium were comparable to or higher than Korean recommend dietary allowances (KRDA). Riboflavin intake wae deficient in school B only. Low socioeconomic school B children had significantly lower intakes of fats, calcium, and riboflavin than school A children. Energy intakes were low as 75.9 (A) and 83.2 (B) % of KRDA but their composition of carbohydrates, fats, and proteins were satisfactory in both schools. More than one-third of protein intake was animalorigin in both schools (A ; 1.40/3, B ; 1.10/3) and calcium intake was very low as 59.0%(A) and 45.8%(B). Education levels of parents, esp. mothers, were positively correlated with Kaup indice (in school A & B) and some nutrients intakes (in school A). In school B, number of siblings and birth order showed negative correlations with some nutrient intakes.

• Journal of the korean academy of Pediatric Dentistry
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• v.31 no.1
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• pp.52-58
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• 2004

Supernumerary tooth describes an excess of tooth number, which are found in primary dentition with 0.3-0.8%, permanent dentition with 1.0-3.5% prevalence. Their frequency is about 2:1 (male vs female) and 9:1 (maxilla vs mandible). However, occurrence is very rare in the incisor region of the mandible. We need a early diagnosis and appropriate treatment plan because of possibility of diastema, eruption failure, displacement, rotation of the associated permanent teeth, root resorption, dentigerous cyst with presence of the supernumerary teeth. This is a case report about two impacted supernumerary teeth found in madibular anterior region of 6 years old girl. One was extracted and another was retained because of fusion with permanent central incisor on the labial surface.

• Journal of the korean academy of Pediatric Dentistry
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• v.43 no.3
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• pp.334-339
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• 2016

Child abuse often interferes with the normal and healthy development of a child, bringing about various complications and problematic behaviors. Furthermore, such physical, mental abuse or neglect, and sexual abuse on a developing child may have serious effects even until after adolescence. The types of injuries caused by physical abuse vary, but some types of injuries are common. A great number of them can be detected during a routine dental examination because many of these injuries are present in the facial and dental region. Accordingly, in the case of abused children, it is important to find the signs of abuse through regular dental checkups, as many suffer injuries to the face, head and neck area including the oral and perioral area. As a pediatric dentist, it is the legal and social obligation to contribute to preventing and assisting the struggle against child abuse. The authors contemplate ways for all pediatric dental related personnel to find some clinical signs and symptoms of child abuse to help early detection, and to manage the situation properly.

• YAKHAK HOEJI
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• v.38 no.4
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• pp.430-439
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• 1994

S-Adenosyl-L-methionine synthetase (ATP: methionine S-Adenosyltransferase, EC 2.5.1.6; AdoMet synthetase) catalyzes the biosynthesis of S-Adenosyl-L-methionine(AdoMet) from methionine in the presence of ATP. To elucidate the role of transmethylation reaction in the pancreatic tissues, we examined AdoMet synthetase and isozyme activities, and AdoMet contents in the various tissues. The activities of AdoMet synthetase marked the highest in the kidney, and the lowest in the testis among the various tissues of rat. Considerable amounts of AdoMet synthetase activities were detected in the pancreatic tissues of various animals except for those of frog. The level of ${\alpha}$ and ${\gamma}$ isozyme activities were present in the pancreatic tissues of various animals, while ${\beta}$ isozyme activities were detected as trace. AdoMet synthetase activities of rat brain, liver, testis were decreased with growth. In the rat pancreatic tissues, AdoMet synthetase activities were increased during 16 days after birth and then decreased between 16 and 47 days of age. Levels of AdoMet contents of rat brain and testis were decreased with growth. However, AdoMet contents of rat pancreas were decreased until 26 days of age, and then increased thereafter. AdoMet synthetase isozyme patterns did not vary with growth in the pancreas and testis. But, in the liver, ${\beta}$ form is strikingly increased with growth.

• Journal of Sericultural and Entomological Science
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• v.30 no.1
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• pp.1-7
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• 1988

Flower buds of the mulberry(Morus alba L., Morus bombycis Koidz.) were cultured under different conditions such as basal media, and various concentrations of plant growth substances. Effects of the culture conditions on growth of the buds and organ regeneration were investigated and the result obtained are as follows: Murashige and Skoog(M.S.) medium was more effective on budding and growth of female(Keomseolppong) and male(Kaeryangppong) flower buds isolated directly from branches, compared to Greshoff & Doy(G.D.) and Wolter & Skog(W.S.) media. The growth of the female buds was promoted at higher concetration of benzyl amino purine(BAP) i.e., 2.0ppm. The female and male buds cultured after cuuting for seven days showed better growth than those without cutting treatment. The females and the males bloomed to form healthy stigmas and anthers, respectively, when cultured on M.S. media containing high Kinetin with low concentration of indole acetic acid(IAA).

• Korean Journal of Community Nutrition
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• v.2 no.1
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• pp.3-12
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• 1997

One-to three -month-old infants(n=252) were compared their growth performance(weight, length, head circumference, chest circumference) by feeding methods in cross-sectional study. There were two groups : breast-fed(BF) and formula-fed groups(FF). The weights of infants at 1, 2, and 3 postpartum month were 4.50$\pm$0.48kg, 5.76$\pm$0.62kg and 6.67$\pm$0.68kg, respectively. The weigh of male infants was higher than females. The length were 53.7$\pm$2.6cm, 57.4$\pm$3.3cm, 61.1$\pm$3.1cm at one to three postpartum months, respectively. The length of male infants was higher than females, too. Overall there were no significant differences between feeding methods in weight, length, head and chest circumferences, and monthly weight and length velocity. But 3-month-old formula-fed male infants showed bigger significantly in weight, monthly weight velocity and chest circumference than the breast-feds. By Korean standards, weight-for-height Z-score were distributed from 0 to ＋2. Not only was there a few malnourished infants but also overnourished were noticed, especially in formula-fed group. From this survey, long-time survey on growth and development of large scales might be necessary to determine the effect of feeding methods of infants after 3 months and to set proper grwoth standard for infant. And it was suggested the that the careful attention of polarized nutritional problems of early infants was needed, especially in formula-fed group. (Korean J Community Nutrition 2(1) : 3~12, 1997)