• Journal of the Korean Chemical Society
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• v.64 no.2
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• pp.67-73
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• 2020

The study aimed to investigate in vitro lipid deposition of oleic acid, oleic acid methyl ester and cholesterol on a daily disposable (1-day lenses) and 3-days lenses over 3 days and changes of optical characteristics is also investigated. Artificial tear solutions were prepared to simulate actual tear compositions. Two types of contact lenses (1-day lenses (Senofilcon A) and 3-days lenses (silicone tripolymer)) were soaked in the artificial tear solutions within an incubator at 37 ℃ with 150 rpm for 8, 16, 24 hours. Lipid deposition (oleic acid, oleic acid methyl ester and cholesterol) were measured using high performance liquid chromatography (HPLC) instrument. In addition, measurements of oxygen transmissibility, light transmittance and observation of lens surface were conducted. The amount of lipid deposition on the 1-day lenses were 127.55 ㎍/lens for Day 1, 302.96 ㎍/lens, for Day 2, and 353.30 ㎍/lens for Day 3. The 3-days lenses were 46.22 ㎍/lens for Day 1, 66.07 ㎍/lens for Day 2, and 67.45 ㎍/lens for Day 3. Oxygen transmissibility were 81×10^-9(cm/sec)(ml O₂/ml×mmHg)(Baseline) and 48×10^-9(cm/sec)(ml O₂/ml×mmHg) (Day 3) for the 1-day lenses, it were 13.23×10^-9(cm/sec)(ml O₂/ml×mmHg)(Baseline) and 9.6×10^-9(cm/sec)(ml O₂/ml×mmHg) (Day 3) for the 3-days lenses. Transmittance of each lenses were 97.21% (Baseline) and 94.25% (Day 3) for the 1-day lenses, 97.65% (Baseline) and 95.15% (Day 3) for the 3-days lenses. Observation of surface deposition indicated greatest deposition for the 3-days lenses type on Day 3. Lipid deposition for both lens types increased by day and was greater for the 1-day lenses type. Surface deposition appeared to differ as it was greatest for the 3 days lens type, which may suggest other deposits such as protein may be present.

• Korean Journal of Food Science and Technology
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• v.37 no.5
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• pp.795-800
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• 2005

Effects of licorice (Glycyrrhiza uralensis) extract (LicoS) as sugar substitute on kimchi quality was evaluated by investigating acid formation, growth of lactic acid bacteria, sensory properties, and volatile odor components of LicoS-added kimchi. pH of LicoS-added kimchi unripened or ripened for one day did not differ from other samples, but was slightly increased with two or three days ripening. Acidity of unripened kimchi or kimchi ripened for one day significantly increased by addition of LicoS, while that of kimchi ripened for two or three days significantly decreased (p<0.05). Addition of LicoS had no significant effect on lactic acid bacteria count of kimchi compared to sugar. Overall acceptability and taste of 0.05 and 0.1% LicoS-added kimchi ripened for one to three days were higher than other samples, whereas addition of 0.2% LicoS resulted in lowest overall acceptability, taste, and odor. Color of 0.2% LicoS-added kimchi (except 3 day-ripened sample) was inferior to other samples. LicoS addition had no significant effect on volatile odor components of kimchi.

• Korean Journal of Human Ecology
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• v.7 no.1
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• pp.101-111
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• 2004

The purpose of this study is to compare overall educational belief and teacher's job satisfaction of day-care teachers. The subject of this were 112 day-care teachers in the Jeonbuk areas. The data were collected using Questionaries and analyzed by the statistical methods of frequencies, percentages, a Chi-square, ANOVA with SPSS pc program: The research Questions were as follows; 1. As the result of the investigation that what is the educational belief of the day-care theacher according to the marital status, academic background, the type of license, and the type of day-care centers\ulcorner 2. Is there any difference in teacher's job satisfaction of day-care teachers according to teachers education belief\ulcorner The main results of this study were as follows: 1. There was not difference in the teacher's educational belief of day-care teachers according to the marital status, academic background, the type of license, and the type of day-care centers in the Jeonbuk province. 2. Day-care teachers who have maturationism education belief was more than behaviorism education belief and interactionism education belief. 3. In the difference between teacher's belief of day-care teachers and job satisfaction of day-care teachers, the teacher who has interactionism, maturationism educationa belief has higher job satisfaction than the teacher who has behaviorism educational belief.

• Journal of the Korean Applied Science and Technology
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• v.7 no.2
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• pp.1-10
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• 1990

This study was attempted to report the effect of Does for Job's tear on steroid hormone changes in rats. Experimental object was one male rat and four female rats in one group. The experimental diet keeped pace with basal diet and Does of Job's tear. A group was basal diet and basal diet & Does for Job's tea was B group(1/day), C group(2/day). D group(3/day), F group(1 day among 3 day, 3/day), G group (1day among 5 day. 3/day) and E group was made diet & Job's tear(3/day). The reduce of weight was appeared to higher in D group and revealed to higher was F, C, B, G and A group. The changes of steroid hormone were showed to significant difference in A group and indicated to significant difference were G, F, B, C, D and E group.

• Korean Journal of Animal Reproduction
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• v.19 no.2
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• pp.141-145
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• 1995

The effect of splenectomy on the concentration of progesterone in pregnant wistar rats showing 4-day regular estrous cycles more than two cycles were investigated. The day after mating with the same male animal was designated day 0 of pregnancy. Splenectomy was conducted on day 0 (early-S), 6 (middle-S) and 13 (late-S) of pregnant rat, respectively. Blood sample were collected at day 1, 7, 14 and 21 of pregnancy. Concentraton of serum progesterone was determined by emzyme-linked immunosorbent assay (ELISA) using specific antibodies and emzyme conjugate(progesterone peroxidase labeled). In normal pregnant rats, serum progesterone concentrations were increased significantly (P<0.05) on day 7 and 14 of pregnancy compared with on day 1 of pregnancy and then dramatically decreased on day 21. However in early and middle splenectomized rats, progesterone concentrations were significantly (P<0.05) decreased on day 7 and 14 of pregnancy compared with same day of normal rats. These observations indicate that luteotropic action and steroidogenesis by corpus luteum of ovary may be regulated by splenocytes in rat.

• 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 Acupuncture Research
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• v.25 no.4
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• pp.31-39
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• 2008

Objectives : The aim of this study is comparing the improvement of Bell's palsy and Ramsay hunt syndrome according to treatment duration. Methods : The 11cases diagnosed as Ramsay hunt syndrome and 30cases of Bell's palsy who visited Cheong-ju Oriental Medical hospital from February 2006 to June 2008 were evaluated. We used Yanagihara's unweighted Grading System to confirm the improvement. Results : In the analysis of cause, except the "none", the most common cause was "Overwork" in both two group. After 5-day treatment the score was getting worse but after 10-day treatment score was improved in both group. The improvement of Bell's palsy group was better than that of Ramsay hunt syndrome group after 5-day and 10-day treatment, but there was no significance. Conclusions : In comparison of Yanagihara's unweighted grading score checked before treatment, after 5-day, 10-day and 15-day treatment between Bell's palsy and Ramsay hunt sundrome, there was no statistical significant difference.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.5
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• pp.555-561
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• 2005

A new graphical method was developed to separate two distinctive decay rate coefficients($k_1$ and $k_2$) at their respective degradable substrate fractions($S_1 and $S_2$). The mesophilic batch reactor showed $k_1$ of $0.151\;day^{-1}$ for wasted activated sludge(WAS), $0.123\;day^{-1}$ for thickened sludge(T-S), $0.248{\sim}0.358\;day^{-1}$ at S/I ratio of $1{\sim}3$ for sorghum and $0.155{\sim}0.209\;day^{-1}$ at S/I ratio $0.2{\sim}1.0$ for swine waste, whereas their long term batch decay rate coefficients($k_2$) were $0.021\;day^{-1}$, $0.001\;day^{-1}$, $0.03\;day^{-1}$ and $0.04\;day^{-1}$ respectively. At least an order of magnitude difference between $k_1$ and $k_2$ was routinely observed in the batch tests. The portion of $S_1$, which degrades with each $k_1$ appeared 71% for WAS, 39% for T-S, 90% for sorghum, and $84{\sim}91%$ at S/I ratio of $0.2{\sim}1.0$ for swine waste. Ultimate biodegradabilities of 50% for WAS, 40% of T-S, $82{\sim}92%$ for sorghum, and $81{\sim}89%$ for swine waste were observed.

• Korean Journal of Veterinary Service
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• v.19 no.3
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• pp.221-226
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• 1996

IBD's antibody level and morphological change of immune organ was examined in chicken. The results were as follows ; 1. Seventy percent at 42 day and 40% at 45 day of age chickens were reacted positively by the agar gel immunodiffusion test and 42 day and 45 day of age chickens indicated 1859, 1425 by the ELISA test, respectively. 2. In 2 and 5 day young broiler chickens, the level of maternal antibody was not proper. B/B ratio showed low level, but S/B ratio and BS were normal. 3. In layer, 100% of 8 and 86 day of age chicken and 70% at 40 day of age chicken had antibody aganist IBDV. The level of antibody was high as 2293 and 3336 in 8 and 86 day of age chicken, while was low as 1186 in 40 day of age chicken. B/B ratio showed low level and S/B ratio high level, but BS was normal.

• Journal of Families and Better Life
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• v.20 no.2
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• pp.57-68
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• 2002

The purpose of this study was to examine working mothers'parenting behavior as related to job characteristics, day care quality and psychological well-being. The subjects of this study were 202 working mothers of 3-to-6 year old children enrolled in day care centers. Data were gathered via questionnaires responded by mothers. As results, both mother's psychological well-being and parenting behaviors were positively related to job characteristics such as husband's support and work place policy and day care Quality Most significantly, the relations between husband's support as well as day care Quality and mother's behaviors were completely mediated via mother's psychological well-being. This study demonstrated that working mothers'psychological well -being is an important mediating variable in predicting positive child-rearing behaviors.