• Journal of the korean academy of Pediatric Dentistry
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• v.44 no.1
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• pp.11-19
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• 2017

The purpose of the study was to investigate the distribution of primary fused teeth and identify the correlation between primary fused teeth and their effect on permanent dentition. 2575 children between the age of 4 and 6 in Kyungpook National University Hospital from January 2009 to August 2015 were investigated. A total of 84 children (46 boys and 38 girls) had fused teeth. 14 of these children had two fused teeth. Prevalence of caries involvement was in 65% of maxilla and 6% of mandible. Prevalence of permanent successors missing was 86.3% in the cases involving maxillary central and lateral incisor, 70% in mandibular lateral incisor and cuspid, 11.7% in mandibular central and lateral incisor. 27 of 84 children (32.1%) had supernumerary teeth. The highest prevalence rate is seen in the cases involving maxillary central and lateral incisor. Delayed permanent tooth eruption was only observed in the maxilla because of developing supernumerary tooth. Early diagnosis of fused tooth in the primary dentition can allow the dentist to make treatment plan at the appropriate time in accordance with the tooth arrangement and tooth development.

• Asian-Australasian Journal of Animal Sciences
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• v.33 no.5
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• pp.836-847
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• 2020

Objective: We investigated the temporal expression profiles of long noncoding RNA (lncRNA) and mRNA in the peripheral blood of pigs during development and identified the lncRNAs that are related to the blood-based immune system. Methods: Peripheral blood samples were obtained from the pigs at 0, 7, 28, and 180 days and 2 years of age. RNA sequencing was performed to survey the lncRNA and mRNA transcriptomes in the samples. Short time-series expression miner (STEM) was used to show temporal expression patterns in the mRNAs and lncRNAs. Gene ontology and Kyoto encyclopedia of genes and genomes analyses were performed to assess the genes' biological relevance. To predict the functions of the identified lncRNAs, we extracted mRNAs that were nearby loci and highly correlated with the lncRNAs. Results: In total of 5,946 lncRNA and 12,354 mRNA transcripts were identified among the samples. STEM showed that most lncRNAs and mRNAs had similar temporal expression patterns during development, indicating the expressional correlation and functional relatedness between them. The five stages were divided into two classes: the suckling period and the late developmental stage. Most genes were expressed at low level during the suckling period, but at higher level during the late stages. Expression of several T-cell-related genes increased continuously during the suckling period, indicating that these genes are crucial for establishing the adaptive immune system in piglets at this stage. Notably, lncRNA TCONS-00086451 may promote blood-based immune system development by upregulating nuclear factor of activated T-cells cytoplasmic 2 expression. Conclusion: This study provides a catalog of porcine peripheral blood-related lncRNAs and mRNAs and reveals the characteristics and temporal expression profiles of these lncRNAs and mRNAs during peripheral blood development from the newborn to adult stages in pigs.

• Journal of Korea Foresty Energy
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• v.25 no.1
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• pp.31-38
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• 2006

Quercus mongolica is the most common hardwood species distributed in Korea. This study was conducted to investigate the biomass and energy content of the belowground biomass of Q. mongolica and to obtain the regression equation for estimating root biomass using the tree height and diameter at breast height (DBH). A total of 18 sample trees ranging 20 to 60 year-old were selected in the study sites. Tree height, DBH, age, and weight of stemwood, sapwood, heartwood, stembark, branch, leaf, and root were measured for total biomass. The highly positive correlation was shown between the biomass of most of variables of aboveground components and root biomass. The regression equation of the aboveground total biomass was $log\;W_A\;=\;1.469\;+\;0.992\;log\;D^2H\;(R^2 =0.99)$. The regression equation of the belowground biomass was $log\;W_R\;=\;1.527\;+\;0.808\;log\;D^2H\;(R^2\;=\;0.97)$. The mean energy contents of sapwood, heartwood, bark, leaf, and root were 19,594 J/g DW, 19,571 J/g DW, 19,999 J/g DW, 20,664 J/g DW, and 19,273 J/g DW, respectively. The results obtained from this study can be used to estimate biomass and energy content of belowground using easily measurable variables such as DBH and tree height ranging from 20 to 60-year-old Q. mongolica stands.

• The korean journal of orthodontics
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• v.29 no.3 s.74
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• pp.339-347
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• 1999

The purpose of this study was to investigate the variations of the skeletal and dentoalveolar dimensions in relation to vertical facial patterns. Lateral cephalogram of 200 cases (100 cases of male and 100 cases of female, average age of which was 23.2 years) were traced and some measurements of skeletal and dentoalveolar dimensions were measured. The ratio of UAFH/LAFH was employed to classify the samples into groups of excess and short lower anterior facial height. And the comparison between two groups were taken statistacally. The following results were obtained. 1. The dentoalveolar height, lower anterior facial height, lower genial angle, and FMA in the excess-lower-anterior-facial-height group were significantly larger than those in short-lower-anterior-facial-height group. 2. The dentoalveolar height, facial height, ramus height, and Jarabak ratio in the male subjects were significantly larger than those in the female subjects. 3. The UAFH/LAFH ratio showed a significant correlation to upper, lower facial height, AUDH, PUDH, ALDH, PLDH, Lower gonial angle, FMA, and $Bj\"{o}rk's$ Sum.

• Korean Journal of Health Education and Promotion
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• v.21 no.1
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• pp.45-68
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• 2004

This study was done to examine the sexual knowledge, attitudes, and behaviors of Korea college students and investigate the effects of sexual education programs on college students with respect to their sexual knowledge and sexual attitudes. For these objectives, a single 92 item sexual questionnaire was administered to 213 college students (113 in the experimental group and 100 in the control group) as a pretest one day before the experimental group participated in a sexual education program. Then a three week sexual education program was given to the experimental group and a posttest was administered to both groups day after the program. The findings from the pretest； 1) The main sources of sexual information were friends, Internet, books and magazines. College students in this study showed relatively high scores on their overall sexual knowledge but showed low scores on their knowledge of venereal disease and HIV/AIDS. Female students had a higher sexual knowledge of physiology, pregnancy and sexual abuse than male students. 2) The overall sexual attitudes of college students were subjective. They showed especially strong liberal attitudes to premarital intercourse, had few double standards and agreed on induced abortion. Male students showed a more liberal attitude to premarital intercourse and extramarital intercourse (X²＝50.679, p＜.001). Christian students showed the lowest rates of permissiveness for induced abortion than students of other religions. 3) 64.9％ of the subjects in this study had experience in intercourse. The gender and age of students did influence the experience rates of intercourse. Male students had much higher rates of intercourse than female students (X²＝13.565, p＜.001) and older students had higher experience rates of intercourse. 4) From the analysis of the relationship between sexual knowledge, attitudes and behaviors, this study revealed that sexual knowledge and sexual attitudes of college students have a correlation 6＝0.324, p＝0.000). Students' experience of intercourse did not influence their sexual knowledge scores, but did influence their sexual attitudes. Students who had experience of intercourse showed more liberal sexual attitudes than those students who did not (t＝2.677, p＜.050). And students who were exposed to sexual media such as pornography, sexual magazines, sexual books and the Internet, also showed more liberal sexual attitudes than those students who were not. The findings from the comparison of pretest and posttest ； 1. The sexual knowledge of the experimental group that participated in the sexual education program was significantly increased after the program compared to before the program (p＜.001). However the control group did not show any significant change in their sexual knowledge. 2. The sexual attitudes of the experimental group were also changed significantly becoming less liberal (p＜.001). The control group also showed significant change in their sexual attitudes, also becoming less liberal (p＜.001). Therefore, the sexual education program used in this study was effective in increasing college students' accurate sexual knowledge, but had little effect on their sexual attitudes.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.12
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• pp.1583-1588
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• 2008

The purpose of this work was to study the relationships between dietary intake and serum lipid profile in 293 adult subjects (mean age: $45.9{\pm}0.7$, men: 163, women: 130) who visited health promotion center. The anthropometric and biochemical blood indices were measured, and nutritional intakes were assessed using a food frequency questionnaire method. The subjects were divided by three groups in accordance with a standard for treating hyperlipidemia; those who had blood cholesterol levels above 240 mL/dL or triglyceride levels above 200 mL/dL were put into the risk group (Risk), while those with blood cholesterol levels below 200 mL/dL and triglyceride levels below 150 mL/dL were put into the control group (Control). Subjects who were between the two groups in terms of blood cholesterol and triglyceride levels were put into the borderline group (Borderline). Risk group showed significantly higher body mass index, body weight, waist circumference, and fat content compared to control group. The levels of calorie, carbohydrate, fat, and protein intake were significantly higher in the risk group than control group. There were significantly positive correlations between dietary calorie, carbohydrate, fat, and protein intake and blood triglyceride concentration. The blood HDL-cholesterol concentration had negative correlation with carbohydrate intake. These results suggested that overeating may be one of important factors affecting hyperlipidemia in Korean adults.

• Korean Journal of Community Nutrition
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• v.10 no.6
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• pp.892-904
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• 2005

This study was carried out to assess the food habit index of the long-lived elderly who were aged over 85 years living in Ganghwa-gun. A survey was conducted during December 2003. Dietary nutrient intake data was obtained through the 24-hr recall method. The subjects were 96 (32 males, 64 females) aged people and divided into three groups based on food habit index scores. Such as group A: good $16\∼20$, group B: fair $11\∼15$, and group C: poor $5\∼10$. The three groups of the subjects were 90.7 years of age and $21.3\;kg/m^{2}$ of BMI on average. Healthy eating index scores of the subjects were $9.4\%$ in group A, $54.2\%$ in group B and $36.5\%$ in group C. Their level of education were lower and their levels of living standards tended to have been middle and lower of the middle class. The percentage of living together with their families or spouses in all groups were over $60.0\%$ and the rates of the subjects who have responsibility for their meal preparations were also very high in all groups. Most subjects tended not to drink nor smoke, and spend $8\~10$ hours for their sleep. The percent of number of diseases in group A was lower than in groups B and C. Their dietary habits such as taking three meals a day regularly have shown that they have good eating habit in general. There was a positive correlation between the eating behaviors and nutrient intakes. The protein, animal protein, fat, PUFA, vitamin E, vitamin $B_{2}$, niacin, P and K intaks in group A were significantly higher than that of the groups B and C. For group A of good food habits aged had no sufficient intake of Ca and vitamin A than the Korean RDA and long-lived elderly of group C in Ganghwa areas had worse nutrients intakes, especially Ca, vitamin A, vitamin $B_{2}$ and vitamin E. According to this research having a good eating habits could be considered as increasing of the health and nutritional status. (Korean J Community Nutrition 10(6) $892\∼904$, 2005)

• The Korean Journal of Nuclear Medicine
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• v.23 no.1
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• pp.55-61
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• 1989

While cisplatin has been widely used in the treatment of a variety of cancers, nephrotoxicity is one of the major problems which frequently limit clinical usefulness of cisplatin. This study has been conducted to investigate nephrotoxicity of cisplatin in terms of changes in glomerular filtration rate (GFR) and effective renal plasma flow (EFPF) measured by the simultaneous use of $^{99m}Tc-DTPA$ and $^{131}I-OIH$, before and after administration of cisplatin, in 12 patients with lung cancer and four patients with esophageal cancer. Cisplatin was administrated at total doses of $75\sim100mg/m^2$ with two hour hydration and diuresis method. GFR determined by the use of $^{99m}Tc-DTPA$ had a good correlation with 24-hour creatinine clearance rate (r=0.77, p<0.001). GFR and filtration fraction decreased immediately after administration of cisplatin, however, they showed a tendency to be in completely recovered four weeks after administration. ERPF was not changed immediately after and four weeks after administration of cisplatin. GFR before and immediately after administration of cisplatin were analyzed with regard to age, sex, performance status, previous adminstration of cisplatin and method of administration. None of these factors had any influence on the rate of decrease in GFR except method of administration. Administration of cisplatin as a single dose lowered GFR more compared with that as divided doses. In this study, we have also demonstrated that the simultaneous use of $^{99m}Tc-DTPA$ and $^{131}I-OIH$ was a useful tool for the measurement of GFR and ERPF respectively.

• Archives of design research
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• v.16 no.3
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• pp.231-240
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• 2003

As all other cultures do, in the background of color of costume, view of life or spirit are contained in the nature or environment that the people lived in are applied. Marring is the ceremony to be socially recognized that both of sexes are unified, assist ancestor and bear future generation. Meaning and symbolism of color are appeared in beauty and organic composition of Lee dynasty. This paper tried to dear up five colors are dean, beautiful and philosophical colors rather than awkward composition of colors through surveying character of five colors appeared in Korean traditional wedding dress that has been succeeded in present age. This paper compared Korean traditional wedding dress and "Dan-chung" of Korea, Japan and China and surveyed theoretical background of Korean traditional color to find character of color appeared in Korean traditional wedding dress. As a result, Korean traditional color is meaningful symbolic color, its origin starts in yin-yang and the live elements of the Oriental cosmogony and it is related with Taoism of Confucianism and color of "Dan-chung." Five colors of yin-yang means everything under the sun and il is the color achieving beauty of balance due to correlation when it is linked to over one color. Further, it contains nature worship and human dignity, prays happiness and gives the significance of "Buksa", meaning of expelling an evil spirit. Formative beauty praying that all creatures are harmonized while human is happy and escapes from uncertainty is the beauty pursuing mental satisfaction as well as visual satisfaction. In future, the creational and characteristic designs that can appeal to world are required through right understanding and study of the beauty of traditional culture beauty of traditional culture

• Journal of The Korean Society of Grassland and Forage Science
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• v.40 no.3
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• pp.167-176
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• 2020

The objective of the present study was to determine the best model to describe and quantify the changes in live body weight, height at withers, height at rump, body length and chest girth of Holstein cows raised under Korean feeding conditions for 50 months. The five standard growth models namely polynomial linear regression models, regression of growth variables on the first and second-order of ages in days (model 1) and regression of growth variables on age covariates from first to the third-order (model 2) as well as non-linear models were fitted and evaluated for representing growth pattern of Holstein cows raised in Korean feeding circumstances. Nonlinear models fitted were three exponential growth curve models; Brody, Gompertz, and von Bertalanffy functional models. For this purpose, a total of 22 Holstein cows raised in Korea used in the period from April 2016 to May 2020. Each model fitted to monthly growth curve records of dairy cows by using PROC NLIN procedure in SAS program. On the basis of the results, nonlinear models showed the lower root mean square of error (RMSE) for live body weight, height at withers, height at rump, body length and chest girth (12.22, 1.95, 1.55, 4.04, 2.06) with higher correlation coefficiency (R²) values for live body weight, height at withers, height at rump, body length and chest girth (0.99, 0.99, 0.99, 1.00, 1.00). Overall, the evaluation of the different growth models indicated that the Gompertz model used in the study seemed to be the most appropriate one for standard growth of Holstein cows raised under Korean feeding system.