• Journal of the Korean Chemical Society
• /
• v.6 no.1
• /
• pp.29-31
• /
• 1962

Paper electrophoresis of aluminium ion was studied using a closed horizontal type apparatus. The optimal conditions of voltage, pH of electrolytic supporting solution and migration time were determined for the electrophoretic migration of the ion on the paper strip saturated by Michaelis buffer solution. The mobility of the ion and the isoelectric point of $Al(NO_3)_3$ solution were $(1.004{\pm}0.0020){\times}10^{-4}\;cm^2\;sec^{-1}\;volt^{-1}$ at pH = 2.38 and pH = 3.23 respectively.

• Child Health Nursing Research
• /
• v.23 no.3
• /
• pp.353-363
• /
• 2017

Purpose: Oral glucose and pH are known as critical indicators for the growth of microorganism inside the oral cavity. This study was performed to identify oral glucose and pH variances in the early postnatal days of newborns. Methods: An explorative study which included 67 newborns was conducted to measure the oral glucose and pH during the first three days of life. Oral secretions were collected every 8 hours for three days or 6 to 9 times immediately after birth up to discharge. Oral glucose and pH variances during the three days were analyzed using the SPSS 22.0. Results: Oral glucose was $30.66{\pm}22.01mg/dl$ at birth then increased to $54.77{\pm}27.96mg/dl$ at the third day of life (F=8.04, p<.001) while oral pH decreased from $7.35{\pm}0.36$ to $5.53{\pm}0.39$ during the three days (F=113.35, p<.001). Oral glucose and pH were related to gestational age, regurgitation, and maternal diabetic mellitus. A negative correlation was found between oral glucose and pH (r=-.34, p<.001). Conclusion: Oral glucose and pH can be utilized for oral health assessment in newborns. Further study is needed to explore the factors which influence oral glucose and pH in high-risk newborns.

• The Journal of the Korea Contents Association
• /
• v.12 no.7
• /
• pp.273-283
• /
• 2012

Drug-eluting stents (DES) have significantly reduced in-stent restenosis, compared to bare-metal stents (BMS). However, there remains concern for the increased risk of stent thrombosis (ST) associated with DES. The present study sought to evaluate the incidence, clinical characteristics and outcome of ST in patients with acute myocardial infarction (MI) during a 1-year follow-up. 80 patients who developed ST were divided into 2 groups according to stent type: group I (DES-ST, n = 57 ) and group II (BMS-ST, n = 23 ). There were no differences between group I and II in the overall incidence of ST (2.7% vs. 4.3%, p=0.064) and in the incidence of each type of ST: acute ST (8.8% vs. 2.3%), subacute ST (50.9% vs. 60.9%), late ST (19.3% vs. 8.7%), and very late ST (21.1% vs. 17.4%) (p=0.605). Predictors of 1-year mortality were the occurrence of ST (OR 8.12, 95% CI 2.83-23.61, p<0.001), left ventricular ejection fraction<40% (OR 6.41, 95% CI 2.42-16.96, p<0.001), and age${\geq}$75 years (OR 4.98, 95% CI 1.95-12.74, p=0.001).

• Journal of Digital Convergence
• /
• v.17 no.2
• /
• pp.207-216
• /
• 2019

The purpose of this study was to examine to identify factors affecting wellness of workers. This study collected questionnaire data from 172 workers from two large workplaces more than 1,000 workers are located in G city. Data were analyzed using descriptive statistics, Pearson correlation coefficient and Hierarchical regression with IBM SPSS statistics 20.0 program. Wellness of worker was correlated with exercise self-efficacy(r=.23, p<.05), autonomous motivation(r=.38, p<.001), exercise behavior(r=.61, p<.001). Hierarchical regression analysis showed that exercise self-efficacy(${\beta}=.34$, p<.001), exercise behavior(${\beta}=.30$, p<.001), subjective health status(${\beta}=-.23$, p<.001), subjective economic status(${\beta}=-.13$, p=.016) explained 57.3%(F=39.29, p<.001) of wellness of workers. Based on the finding, there is a need to develop an intervention program that consider exercise self-efficacy, exercise behavior, subjective health status and subjective economic status.

• Journal of Embryo Transfer
• /
• v.16 no.3
• /
• pp.173-182
• /
• 2001

The present study was carried out to examine the effect of superoxide dismutase (SOD) on in vitro maturation (IVM) of porcine follicular oocytes and oxygen concentration with SOD on in vitro development (IVD) of porcine IVM/IVF embryos. The results were summarized as follows : 1. The rates of nuclear maturation, penetrated oocytes, polyspermic oocytes and mean numbers of the penetrated sperm were not different in the NCSU-23 maturation media with 0, 100, 500 and 1,000 units/ml SOD. However. the pronucleus formation rates were significantly lower in oocytes matured with addition groups than those of no addition groups of SOD (P>0.05). 2. The rates of blastocyst formation and total cell numbers of blastocyst at day 7 after in vitro fertilization were significantly lower in addition groups than those of the no addition groups of SOD (P>0.05). 3. The rates of blastocyst formation at day 7 after in vitro fertilization were higher in the NCSU-23 culture medium with 100 units/ml SOD than in those cultured with 0, 500 and 1,000 units/ml SOD under the 5% and 20% $O_2$concentrations. However, no differences was found in the total cell numbers of blastocyst among the treatments. In conclusion, these results suggested that the addition of SOD was not adequate for porcine oocyte maturation and further development, also the rates of blastocyst formation and total cell numbers of blastocyst at day 7 of porcine IVM/IVF embryos were not different in the NCSU-23 culture medium under the 5% and 20% $O_2$concentrations.

• Journal of Korean society of Dental Hygiene
• /
• v.17 no.3
• /
• pp.441-448
• /
• 2017

Objectives: The purpose of this study was to examine the cell proliferation and expression of alkaline phosphatase (ALP) during the differentiation of murine odontoblast-like cells (MDPC-23) by Cimicifuga rhizoma extract. Cimicifuga rhizoma extract was prepared using 70% ethanol. Then, the cells were treated with 25, 50, 100, 150, and $200{\mu}g$ of Cimicifuga rhizoma extract. Methods: We determined the Cimicifuga rhizoma effects of MDPC-23 using WST-1 (water soluble tetrazolium salt-1) assay, ALP activity assay and histochemical staining. Results: $25-200{\mu}g$ of Cimicifuga rhizoma extract did not inhibit the growth of MDPC-23 cells; $100{\pm}0$, $100{\pm}3.29$, $99{\pm}4.86$, $98{\pm}3.80$, $98{\pm}1.73$, $99{\pm}5.05%$ (p<0.794). $50{\mu}g$ of Cimicifuga rhizoma extract stimulated ALP activity on MDPC-23; $5.1{\pm}0.20units/{\mu}{\ell}$ (p<0.001). Conclusions: It was proven that Cimicifuga rhizoma promoted differentiation of MDPC- 23 cells.

• Journal of muscle and joint health
• /
• v.23 no.2
• /
• pp.114-124
• /
• 2016

Purpose: The purpose of this study was to investigate the level of uncertainty, physiological risk factors, self-efficacy, and self-management among stroke patients and to identify factors influencing their self-management. Methods: A descriptive correlational design was used for this study. A convenience sample of 149 patients with stroke were enrolled at C national university hospital from February to April in 2016. Data were collected using a structured questionnaire and electronic medical record. Collected data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlations, and multiple regression analysis with the SPSS/WIN 21.0 program. Results: There were significant negative correlations between uncertainty and self-efficacy (r=-.56, p<.001); between uncertainty and self-management (r=-.56, p<.001); and between total cholesterol and self-management (r=-.23, p=.005). There were significant positive correlations between self-efficacy and self-management (r=.78, p<.001); between uncertainty and total cholesterol (r=.24, p=.003). The significant factors influencing self-management were uncertainty and self-efficacy. Theses variables explained 62.7% of the variance in self-management. Conclusion: The results suggest that intervention programs to reduce the level of uncertainty and to increase the level of self-efficacy among patients would improve the self-management of stroke patients.

• Biomedical Science Letters
• /
• v.23 no.3
• /
• pp.215-222
• /
• 2017

Obesity has been directly associated with the development of hypertension and cardiovascular disease. The purpose of this study was to investigate the blood pressure response during graded exercise test in obese adults. 189 subjects (age: $47.96{\pm}10.23$) were assigned to two groups: non-obese group (N=105, BMI: $22.05{\pm}1.57$, waist circumference: $76.90{\pm}6.17$) and obese group (N=84, BMI: $26.96{\pm}2.51$, waist circumference: $88.29{\pm}6.41$). The subjects underwent health screening and exercise treadmill test from January 2012 to December 2014. Graded exercise test was performed according to the Bruce protocol. Exercise duration (P=0.046) and METs (P=0.015) were significantly lower in obese group than non-obese group. There was no difference in the rate of change in blood pressure response between obese group and non-obese group during exercise, and the recovery rate of systolic blood pressure was delayed in the obese group compared to non-obese group in the first recovery period (P=0.020). The significant factors of increasing rate of change in maximum systolic blood pressure was waist (P=0.046) and hip circumference (P=0.008). In conclusion, these results demonstrate that, for hypertension prevention in obese adults, waist and hip circumference levels should be managed within normal range.

• Journal of Korean Clinical Nursing Research
• /
• v.23 no.2
• /
• pp.248-257
• /
• 2017

Purpose: This study was aimed to compare nursing competency, self-esteem, and job stress between floating nurses and clinical nurses. Methods: The data were collected between October $1^{st}$ and December $31^{st}$, 2015, from 43 floating nurses and 57 clinical nurses working at a tertiary care hospital in Seoul. The collected data were analyzed with SPSS/WIN 23.0, using descriptive statistics and the t-test, $x^2$ test, ANCOVA, ANOVA, $Scheffe{\acute{e}}$ test, Pearson correlation coefficients, and Stepwise multiple regression. Results: The nursing competency of clinical nurses was significantly higher than that of floating nurses (F=4.370, p=.039). For both floating and clinical nurses, nursing competency was positively correlated with self-esteem (floating nurses, r=.47, p=.002; clinical nurses, r=.62, p<.001). Also, For both floating and clinical nurses, the most significant predictor of nursi ng competency was self-esteem(floating nurses, ${\beta}=0.45$, p=.001; clinical nurses, ${\beta}=0.60$, p<.001). Conclusi on: Efforts are needed to increase the nursing competency of the floating nurse through the improvement of the floating system, the nursing work environment, and continuous education. Also, as self- esteem is the most effective predictor of nursing competence, nursing intervention is needed to improve self-esteem of the floating nurse.

• Journal of the Korea Convergence Society
• /
• v.11 no.2
• /
• pp.351-360
• /
• 2020

The purpose of this study is to verify the current states of the comprehensive nursing care services and nursing professionalism the role conflicts and job stresses experienced by the nurses, to investigate the influences affecting the nursing professionalism. The subjects were 174 nurses, the role conflict, job stress, and nursing professionalism have a significant correlation with each other. Data were analyzed by t-test, correlation, regression analysis using SPSS WIN 23.0 program. The result showed that the correlation between nursing professionalism was significant in role conflict(r=-.186, p=.014) and job stress(r=-.389, p<.001). In addition, factors affecting nursing professionalism were in order of role conflict and job stress(F=23.810, p<.001), and explanatory power was 11.8%.