• Korean Journal of Childcare and Education
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• v.16 no.1
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• pp.1-20
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• 2020

Objective: The purpose of this study was to explore the application of the multidisciplinary model, which is customized evidence-based counseling for abused preschool children done by a day care center teacher. Methods: The participants were 16 preschool children which were abused by a day care center teacher and their parents. The data were analyzed by using the Wilcoxon Signed-rank test. Results: The multidisciplinary cooperative service model based on customized evidence-based counseling for abused preschool children, their parents, and day care center teachers was developed. Based on this model, customized evidence-based Post-Traumatic Stress Disorder (PTSD) emergency intervention was provided to preschool children abused by a day care teacher in Incheon. The multidisciplinary cooperative emergency intervention service proved to be effective in reducing emotional and behavioral problems of abused preschool children and enhancing the mental health of parents. Conclusion/Implications: The results of this study indicated that the customized evidence-based counseling for abused preschool children done by a day care center teacher using the multidisciplinary cooperative linkage system would be effective, and that child abuse prevention by day care center teachers and intervention services should be provided systematically at the national level.

• Korean Journal of Veterinary Service
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• v.24 no.2
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• pp.147-159
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• 2001

This Study was conducted to determine vaccination programs for the control of Newcastle Disease(ND) in chickens and investigate protective effect against Newcastle disease virus (NDV) after live ND vaccination. Maternal HI antibody titer level of chickens according to day(age) 1, 7, 14, 21, 28 and 35 were decreased gradually as 7.10$\pm$0.74, 6.57$\pm$0.74, 3.71$\pm$1.25, 2.20$\pm$1.03, 1.20$\pm$1.23 and 0.50$\pm$0.71. As a result of HI test and ELISA, both chickens vaccinated with VG/GA strain live vaccine at 1-day-old and chickens not vaccinated do not have antibody titer for protection against NDV at 14-day-old. Except for LaSota strain vaccine, in case of vaccination with VG/GA spray and VG/GA, B1 and LaSota strain drinking water at 14-day-old, the protective effect was 100% in chickens inoculated NDV($10^{7.2}$ $EID_{50}$/50${\mu}\ell$, eye drop) at 21-day-old, but not 10～50% at 28-day-old. These data suggest that live NDV vaccination should be given at 10-day-old 20-25day-old for protect against NDV at periodic outbreaks of ND caused by velogenic viscerotropic NDV in the environment of a farm.

• Journal of Korean Public Health Nursing
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• v.37 no.1
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• pp.43-53
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• 2023

Purpose: This study aims to identify the factors influencing the depression of teachers in child day care centers. Methods: The study 181 teachers working at national/public or child day care centers certified by Seoul Metropolitan government in Seoul, South Korea. Data from September to October 2021, and emotional labor, job stress, ego resilience, stress resilience, and depression. Data were analyzed using t-test, ANOVA, Pearson's correlation coefficients, and stepwise multiple regression. Results: The average depression of child day care center's teachers 8.52±7.58 out of 60 points, and the depression group (above 21 points) was 9.4%. Depression in child day care center's teachers was positively correlated with job stress (r=.42, p<.001) and negatively correlated with ego resilience and stress resilience (r=-.55, p<.001). Factors affecting depression of child day care center's teachers were found to be job stress (p=0.005), ego resilience (p<.001), stress resilience (p=0.031) and the explanatory power of these variables was 39%. Conclusion: Results of this study indicate that in the future development of depression intervention programs for teachers of child day care centers, it is necessary to include measures that reduce job stress and strengthen ego resilience and stress resilience.

• Journal of Food Hygiene and Safety
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• v.31 no.5
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• pp.356-364
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• 2016

In vivo genotoxic potential of isoquercetin, a plant common flavonoid, in comparison with quercetin was investigated for the DNA breakage and the clastogenicity endpoints. Male ICR mice were administered by oral gavage for 3 days with $3{\times}0.5%$ carboxymethyl cellulose (CMC), 3 ${\times}$ isoquercetin (250, 500 mg/kg/day), 3 ${\times}$ quercetin (250, 500 mg/kg/day) and 2 ${\times}$ ethyl methanesulfonate (EMS, 200 mg/kg/day). Tissues were collected 48 hours after the first treatment and within 3 hours after the last treatment. The DNA damages were evaluated using Comet assay in liver and stomach, while the clastogenicities were determined using micronucleus test in bone marrow of same animals. The treatment of isoquercetin as well as quercetin did not cause the DNA damages in liver and stomach, and not induce the frequencies of micronucleus polychromatic erythrocytes in bone marrow. In conclusion, isoquercetin as well as quercetin did not cause the DNA breakages and the chromosomal damages in vivo system in these study conditions.

• Toxicological Research
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• v.29 no.1
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• pp.27-34
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• 2013

This study was conducted to investigate the potential embryo-fetal toxicity and toxicokinetics of the antimalarial agent artesunate (ARTS) in Sprague-Dawley rats. Pregnant rats were administered ARTS daily from gestational day 6~15 via oral gavage, at test doses of 0, 2, 4, or 8 mg/kg (22 females per group). The fetuses were examined for external, visceral, and skeletal abnormalities on gestational day 20. With regard to the dams, there were no deaths, treatment-related clinical signs, changes in body weight, or food intake in any of the treatment groups. There were no treatment-related gross findings at necropsy in any treatment group. In the 8 mg/kg group, there was a decrease in gravid uterine weight and in the weight of female fetuses. There was also an increase in fetal deaths (primarily late resorptions) and an increase in post-implantation losses (37%) at 8 mg/kg. An increase in the incidence of visceral and skeletal variations at 4 and 8 mg/kg was observed. These defects included minor changes in the appearance of the kidney and thymus, as well as absent ribs or thoracic vertebrae. Toxicokinetics were assessed in a parallel study, using 4 mated females per group. Using liquid chromatography-mass spectrometry (LC-MS) analysis, the concentration of ARTS and its metabolite dihydroartemisinin (DHA) were quantified in plasma from rats on gestational days 5, 6, 10, and 15. Amniotic fluid was assayed for ARTS and DHA on gestational day 15. There was evidence of rapid conversion of ARTS to the metabolite DHA in maternal plasma, since ARTS could not be consistently detected in plasma at the three doses tested. ARTS and DHA were not detected in amniotic fluid at gestational day 15, indicating limited placental transfer of the two agents. The embryo-fetal no-observable-adverse-effect level (NOAEL) of the test item was considered to be 8 mg/kg/day for dams, and 2 mg/kg/day for embryo-fetal development.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.5
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• pp.607-614
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• 2016

The objectives of the study were to estimate genetic parameters for milk production traits of Holstein cattle using random regression models (RRMs), and to compare the goodness of fit of various RRMs with homogeneous and heterogeneous residual variances. A total of 126,980 test-day milk production records of the first parity Holstein cows between 2007 and 2014 from the Dairy Cattle Improvement Center of National Agricultural Cooperative Federation in South Korea were used. These records included milk yield (MILK), fat yield (FAT), protein yield (PROT), and solids-not-fat yield (SNF). The statistical models included random effects of genetic and permanent environments using Legendre polynomials (LP) of the third to fifth order (L3-L5), fixed effects of herd-test day, year-season at calving, and a fixed regression for the test-day record (third to fifth order). The residual variances in the models were either homogeneous (HOM) or heterogeneous (15 classes, HET15; 60 classes, HET60). A total of nine models (3 orders of $polynomials{\times}3$ types of residual variance) including L3-HOM, L3-HET15, L3-HET60, L4-HOM, L4-HET15, L4-HET60, L5-HOM, L5-HET15, and L5-HET60 were compared using Akaike information criteria (AIC) and/or Schwarz Bayesian information criteria (BIC) statistics to identify the model(s) of best fit for their respective traits. The lowest BIC value was observed for the models L5-HET15 (MILK; PROT; SNF) and L4-HET15 (FAT), which fit the best. In general, the BIC values of HET15 models for a particular polynomial order was lower than that of the HET60 model in most cases. This implies that the orders of LP and types of residual variances affect the goodness of models. Also, the heterogeneity of residual variances should be considered for the test-day analysis. The heritability estimates of from the best fitted models ranged from 0.08 to 0.15 for MILK, 0.06 to 0.14 for FAT, 0.08 to 0.12 for PROT, and 0.07 to 0.13 for SNF according to days in milk of first lactation. Genetic variances for studied traits tended to decrease during the earlier stages of lactation, which were followed by increases in the middle and decreases further at the end of lactation. With regards to the fitness of the models and the differential genetic parameters across the lactation stages, we could estimate genetic parameters more accurately from RRMs than from lactation models. Therefore, we suggest using RRMs in place of lactation models to make national dairy cattle genetic evaluations for milk production traits in Korea.

• Journal of Pharmacopuncture
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• v.11 no.3
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• pp.93-97
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• 2008

Objective: This study was done to investigate the safety of Fel Ursi pharmacopuncture solution manufactured with freezing dryness method to use eye drop. Methods: The eye irritation test of this material was performed according to the Regulation of Korea Food & Drug Administration(2005. 10. 21, KFDA 2005-60). After Fel Ursi pharmacopuncture solution was medicated in the left eye of the rabbits, the author observed eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Results: 1. After Fel Ursi pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't physical problem at 9 rabbits. 2. After Fel Ursi pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Conclusions: I suggested that Fel Ursi pharmacopuncture solution didn't induced eye irritation in rabbits.

• Journal of Pharmacopuncture
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• v.11 no.3
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• pp.99-104
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• 2008

Objective: This study was done to investigate the safety of Fel Ursi & Bovis Calculus pharmacopuncture solution manufactured with freezing dryness method to use eye drop. Methods: The eye irritation test of this material was performed according to the Regulation of Korea Food & Drug Administration(2005. 10. 21, KFDA 2005-60). After Fel Ursi & Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, the author observed eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Results: 1. After Fel Ursi & Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't physical problem at 9 rabbits. 2. After Fel Ursi & Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Conclusions: I suggested that Fel Ursi & Bovis Calculus pharmacopuncture solution didn't induced eye irritation in rabbits.

• Journal of Pharmacopuncture
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• v.11 no.2
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• pp.75-79
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• 2008

Objectives This study was done to investigate the safety of Soyeom pharmacopuncture solution manufactured with freezing dryness method to use eye drop. Methods The eye irritation test of this material was performed according to the Regulation of Korea Food & Drug Administration(2005. 10. 21, KFDA 2005-60). After Soyeom pharmacopuncture solution was medicated in the left eye of the rabbits, the auther observed eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Results 1. After Soyeom pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't physical problem at 9 rabbits. 2. After Soyeom pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Conclusions I suggested that Soyeom pharmacopuncture solution didn't induced eye irritation in rabbits.

• Journal of Pharmacopuncture
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• v.11 no.2
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• pp.81-85
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• 2008

Objective This study was done to investigate the safety of Bovis Calculus pharmacopuncture solution manufactured with freezing dryness method to use eye drop. Methods The eye irritation test of this material was performed according to the Regulation of Korea Food & Drug Administration (2005. 10. 21, KFDA 2005-60). After Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, the auther observed eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Results 1. After Bovis Calculus pharmacopuncture solution was medicated in the left eye of the rabbits, there wasn't physical problem at 9 rabbits. 2. After Bovis Calculus pharmacopuncture solutionwas medicated in the left eye of the rabbits, there wasn't eye irritation of the cornea, iris, conjunctiva at 1, 2, 3, 4 & 7day. Conclusions I suggested that Bovis Calculus pharmacopuncture solution didn't induced eye irritation in rabbits.