• Journal of the Korean Dietetic Association
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• v.12 no.1
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• pp.55-67
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• 2006

The purpose of this study was to compare the food behavior and nutrient intakes, and the analysis of constituent parts of blood related to iron nutrition conditions and to investigate the correlation between iron nutrition conditions and obesity. Each subject was assigned to one of such as normal(n=55) and obese groups(n=60) according to their obesity index. Their nutritional status, serum iron status were evaluated based in 24-hr dietary recalls, questionnaire and blood analysis. The mean age of the normal group(10.76 years) and that of the obese group(10.95 years) made little difference. The height(p<0.05), weight(p<0.001), and obesity index(p<0.001) in the obese group were higher than those of the normal group in every respect. The 63.55% of the subject of this study gave an answer 'They eat breakfast daily', and the frequency of eating breakfast made little difference. The average intakes of energy were 1669.44 kcal(84.19% of EER) in the obese group and 1673.59 kcal(86.72% of EER) in the normal group respectively, which made little difference between two groups. The intake of nutrients such as calcium and folate was as insufficient as below 75% of RI. The heme iron intake of the obese group was low that of the normal group(p<0.05). Among the major 20 iron resources the iron intake through animal food intake were 1.43 mg(12.00%) in the obese group and 1.93 mg(17.72%) in the normal group respectively. The rating of iron condition in the blood showed that the number of red blood cell(p<0.01), the hemoglobin(p<0.001), and hematocrit(p<0.01) of the obese group were lower than those of the normal group. These results suggest that there should be the right choice of food according to its bioavailability and nutritive guidance to appropriate food behavior, in addition to increasing iron intake to improve iron nutrition conditions of obese male elementary school students.

• Restorative Dentistry and Endodontics
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• v.34 no.4
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• pp.371-376
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• 2009

We evaluated in vitro microleakage of Mineral Trioxide Aggregate (MTA) powder with 4-methacryloxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resin as a retrograde filling material by using methylene blue dye method. Fifty-two single rooted, extracted teeth were instrumented and obturated with gutta percha and AH plus sealer. The apical 3mm of each root was resected and 3mm deep ultrasonic root end preparation was done. External surface of roots was coated with nail varnish. Prepared teeth were randomly divided into five groups; Negative control: completely covered with nail varnish; Positive control: coated with nail varnish except for apical foramen; Group 1 (retrofilled with Portland cement); Group 2 (retrofilled with MTA); Group 3 (retrofilled with MTA powder mixed with 4-META/MMA & TBB resin). Immediately after completion of root-end filling, all specimens were submerged in methylene blue dye for 72 hours in $37^{\circ}C$incubator. The roots were longitudinally sectioned and measured for extent of dye penetration by three different examiners under microscope (${\times}$10). The results were statistically analyzed using one way ANOVA and Turkey's HSD test. No leakage was evident in negative control and complete leakage in positive control group. Group 3 showed significantly less leakage than group 1 and 2 (p < 0.01). There was no significant difference between group 1 and 2 (p > 0.01). It was concluded that MTA powder with 4-META/MMA & TBB resin was excellent in reducing initial apical microleakage.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.32 no.5
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• pp.563-567
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• 1999

Changes in proximate composition and meat weight of oysters cultured in shallow-water at Bukman bay of Tongyeong in Korea with Korean and Japanese spats were investigated. Protein content (dry basis) was rich in August and September, accounting for $70\~72\%$ in the oyster (Korean oyster) cultured with Korean spat and $75\~76\%$ in the oyster (Japanese oyster) cultured with Japanese spat. On the contrary to protein content, carbohydrate contents (dry basis) in the both oysters were poor in the both months, There was a negative correlation (r=-0.94, p<0.01) between protein and carbohydrate content during growing of the bath spats. Total lipid (TL) content was the poorest in August, which is known as spawning season, accounting for $1.4\~1.5\%$ in the both oysters. In addition, the korean oyster also showed the lowest level or TL content in october. Meat weights or the Korean and japanese oysterswere 4.2$\~$4.8 g/specimen and 7.5$\~$8.3 g/specimen, respectively, in the harvest season from November to December. Meat weight increased exponentially with TL content, $y=0,2081e^{1.5696x}$ (r=0.8856, p<0.001). These nutritional components per specimen were contained about two times more in the Japanese oyster than in the Korean one in the harvest period.

• Journal of Food Hygiene and Safety
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• v.39 no.2
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• pp.128-133
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• 2024

Using the freezing removal method, we investigated residual pesticides in 50 grape seed oils distributed in Gyeonggi Province, South Korea. The fat was mixed with acetonitrile and then frozen at ≤-20℃ for 24 h. Fats and oils were removed by separating those in solid state and the extract acetonitrile in liquid state. Ten residual pesticides were detected 161 times in 49 of 50 cases. The detected pesticides were boscalid, cyclufenamide, deltamethrin, difenoconazole, fluxapyroxad, fenpyrazamine, kresoxim-methyl, piperonyl butoxide, tebuconazole, and trifluoxysorbin. Boscalid, a fungicide, was most frequently detected (44 times), followed by fluxapiroxad (35 times). The detection range was 0.01-1.10 mg/kg, which was within the legal limit of residual pesticide for grapes. The recovery rate of the detected pesticides was 72.6-129.8% and the ratio of estimated daily intake/acceptable daily intake was calculated to determine the risk of the detected pesticides, which was <0.0028%. This indicated that the risk caused by pesticide residues in grape seed oil is at a safe level.

• Journal of the Korean Society of Food Science and Nutrition
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• v.31 no.1
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• pp.160-169
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• 2002

This study was carried to investigate the nutrition knowledge, dietary habits and nutrition attitude of 227 teachers of elementary and middle school in Masan city. The survey was conducted by a self-administered questionnaire. The results showed that the subjects had a high level of perceived nutrition knowledge (85.2%), but the accuracy of the knowledge was 76.2%, and percentage of correct answers was 65.5%. The average nutrition knowledge score was 13.1 out of possible 20 points, the average score of dietary habits was 76.2 and nutrition attitudes score was 70.8 out of 100 points. Most of the subjects are belonged to the 'good'group in terms of nutrition knowledge, dietary habits and nutrition attitudes level. Female teachers scored significantly higher on nutrition knowledge and nutrition attitudes than male teachers did (p<0.001). And elementary school teachers scored significantly higher on dietary habits than noddle school teachers (p<0.01). There was a highly significant correlations between nutrition knowledge and nutrition attitude (r =0.3, p<0.001); dietary habit and nutrition attitude (r : 0.4, p<0.001). But the correlation between nutrition knowledge and dietary habits was not significant.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.4
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• pp.2491-2494
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• 2013

Background: To evaluate the relative effectiveness of different treatments of hepatocellular carcinoma (HCC) via the hepatic artery. Materials and Methods: The study sample group consisted of 418 patients who were randomly selected from 2008 to 2012 with a first diagnosis of HCC and treated with transcatheter arterial chemoembolization (TACE) or without (TAE) chemotherapy or transcatheter arterial infusion (TAI). We collected data including tumor size preoperative and one month thereafter to compare change in areas across the three groups, along with various laboratory indexes for comparison. Results: The overall average change of areas was $240.8{\pm}72.1mm^2$. In the three groups it was $265.0{\pm}58.0mm^2$ vs. $250.5{\pm}51.9mm^2$ vs. $123.7{\pm}26.2mm^2$. In groups TACE and TAE values were larger than in group TAI (p<0.01), but the difference between the two was not statistically significant (p= 0.191). Additionally, U/L change of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in groups TACE and TAE was greater than in the TAI cases ($24.0{\pm}13.5$ vs. $20.9{\pm}12.1$ vs. $5.47{\pm}8.20$ and $25.6{\pm}13.5$ vs.$23.2{\pm}12.28$ vs.$5.48{\pm}14.3$) on the preoperative day and two days thereafter (p<0.01). Between the two groups there was no significant cariation (p= 0.320 and p= 0.609). However, the AST and ALT recovered to normal levels one month later on therapy with liver protecting drugs. Conclusion: The groups TACE and TAE demonstrated more effective reduction of tumor size than group TAI. While lipiodol caused acute liver function damage, this proved reversible.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.1
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• pp.65-72
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• 2015

AMI / HDB-3 method used a scrambling technique is used primarily for long distance data transmission line encoding. In this paper, information communication code standard (KS X 1001; 2014 confirmation), as defined in Hangul Character Code HDLC Flag bit or character stuffing at the data link layer and physical layer with respect to the code set for Hangul AMI / HDB-3 the code set for the new system to increase the data transmission efficiency Hangul consonant and vowel tables presented in terms of scrambling. The result of the existing system and the code set ($4{\times}4$) bit source coding rules for comparing the frequency of use Hangul consonant and vowel tables and statistics showed that about 22.01% of the data processing efficiency is improved.

• Journal of the Korean Dietetic Association
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• v.14 no.1
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• pp.87-96
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• 2008

The purposes of this research were to investigate in-patients' perception on foodservice quality and to examine factors influencing their meal consumption at hospitals. Three general hospitals with over 400 beds in Seoul and Chon-An agreed to participate in the research. A total of 516 in-patients of the hospitals were surveyed on their meal consumptions, reasons of plate wastes, perceptions of foodservice quality, and demographic information. A response rate was 76% after excluding responses with significant missing data. On average the regular diet patients consumed 72%, 69%, and 68% of rice, soups, and side dishes served, respectively; the therapeutic diet patients consumed less than 70% of the meals they were served. The consumption rates did not differ significantly by diet type, gender, age, and hospitalization period. Among the therapeutic diet patients, those who had nutrition education consumed significantly more rice than the others (p<0.05). The main reasons why the patients did not eat all food served were 'lack of energy' and 'not tasty'. The patients' perception on foodservice quality was low; the therapeutic diet patients perceived more negatively than the regular diet patients in 'keeping hot food hot, cold food cold(p<0.05)', 'maintaining consistency of taste(p<0.01)', and 'providing nutrition information(p<0.01)'. To achieve the goal of the foodservice at hospitals, the dietitians can use the findings of the research in developing and implementing strategies to improve the patients' meal consumption. Recipe standardization, employee training, and production management will be useful for improving food quality and nutrition education on therapeutic diets for the patients will improve their meal consumption at hospitals.

• Journal of Oral Medicine and Pain
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• v.10 no.1
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• pp.73-89
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• 1985

This study comprised 157 extracted teeth, 73 of the teeth originated from mates and 84 from females, the age range was 12-79 years. The correlation coefficient of each Gustafson's criteria in relation to age was carried out. Age estimation were performed on 157 teeth according to the method by Gustafson and by use of multiple regression, as used by Johanson, after evaluating the six criteria of Gustafson by multiple regression computer analysis. Two prediction formulas and standard deviations were compared with each other. The results were as follows : 1. The author found that six Gustafson's criteria had strong correlation with age except root resorption, and correlation coefficients were r = 0.79 (Transparent dentin), r=0.72 (Secondary dentin), r 0.69 (Periodontal change), r=0.63(Attrition), r = 0.39 (Root resorption), respecti vely. 2. The age estimation formula by Gustafson's method was calculated as follows: Y 8.88 + 3.52X r =0.87, r2 = 0.76, SD = 8.18, F = 483.56, P < 0.01 The age estimation formula by multiple regression was calculated as follows: Y 8.57 + 6.37T + 6.37T + 4.63P + 2.70S + 2.40C + 3.08A + 1.34R r= 0.89, r2 = 0.78, SD = 7.82, F = 91.62, P < 0.01, Durbin-Watson Coefficient = 1.09 3. In comparison of two estimation formulas, the formula by multiple regression, the method of Johanson, was found to be slightly more reliable than Gustafson's method. Gustafson's method SD = 8.18, Multiple regression (Johanson's method) SD = 7.82 4. It was reaffirmed that Gustafson's six criteria could be a independent variable in multiple regression analysis.

• Journal of The Korean Association For Science Education
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• v.20 no.1
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• pp.88-100
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• 2000

This study was to investigate high school students' philosophical views on science and positions of constructivists; Popper, Lakatos, Toulmin, and Kuhn. The results of this study were as follows: First, most students had the eclectic position(69%): similar percentages in sex(male 67%, female 75%), stream(liberal art 72%, science 74%), and of having experience on reading books or magazines related to the philosophy of science(ever 78%, never 64%). Second, in analysis of ANDVA of science philosphical perspectives by experience of reading books, magazines, and matters related to the philosophy of science, significant difference was revealed(p<.01). Students who had ever heard of or read about the philosophy of science were tend to have Empiricism. Third, ANDVA analysis of constructivist philosphical perspectives showed that male students were nearer to Kuhn's position than female(p<.05) and students in science stream were closer to Popper than in liberal art(p<.05). And male students in science party showed a great tendency to consent Popper's perspective(p<.01). This result seems to suggest that male students tended to think social aspects more deeply than female and held Kuhn's position.