• Journal of Society of Preventive Korean Medicine
• /
• v.6 no.2
• /
• pp.112-127
• /
• 2002

Objectives: Younnyeniksoobulrodan(延年益壽不老丹) composed of Polygonum multiflorum THUNB. and some medical herbs is known as formula of senescence delay effect. The purpose of this study is to investigate the effect of Younnyeniksoobulrodan(延年益壽不老丹) on antioxidant enzyme activity such as Thiobarbituric acid reactive substance(TBARS), Superoxide dismutase(SOD), Catalase(CAT), Glutathione peroxidase (GSH-px) in rat erythrocytes and liver. Methods: Sprague-Dawley rats divided into 4 gorups, Young group(8 weeks old, N-8), Aging group(18 weeks old, N-18), pathologically induced aging gorup(injected D-galatose 50mg／kg, 1time／day for 6 weeks, CON) and Younnyeniksoobulrodan(延年益壽不老丹) administered group(D-galactose 50mg／kg and Younnyeniksoobulrodan extracts 840.0mg／kg 1time／day for 6 weeks, YIB). Rats were sacrificed and TBARS, SOD, CAT, and GSH-px were measured in rat erythrocytes and liver. Results: Plasma and liver TBARS concentrations of YIB group were significantly lower than those of control. Red blood cell(RBC) SOD activities of YIB group was increased(F=3.445, p=0.033, ANOVA test), and RBC catalase activities of all experimental group were not significantly different. RBC GSH-px activities of YIB group was increased(F=9.365,p=0.0001, ANOVA test). Liver SOD activities of YIB group was higher than those of control(F=4.967, p=0.008, ANOVA test). Liver catalase activities of all experimental group were not significantly different, and liver GSH-px activity of YIB group was significantly higher than that of control(F=3.846, p=0.022,ANOVA test). Conclusions: According to the above results, it is considered that Younnyeniksoobulrodan is effective in inhibiting lipid peroxidation and increasing antioxidative enzyme activities in D-galactose induced aging rat.

• Restorative Dentistry and Endodontics
• /
• v.30 no.6
• /
• pp.442-449
• /
• 2005

The purpose of the present study was to evaluate the relationship between the amount of cuspal deflection and linear polymerization shrinkage in resin composite and polyacid modified resin composite, For cuspal defelction and shrinkage measurement, Dyract AP, Compoglass F, Z100, Surefil. Pyramid, Synergy Compact, Heliomolar and Heliomolar HB were used. For measuring polymerization shrinkage, a custom made linometer (R&B, Daejon, Korea) was used The amount of shrinkage among materials was compared using One-way ANOVA analysis and Tukey's test at the $95\%$ of confidence level For measuring cuspal deflection of teeth, standardized MOD cavities were prepared in extracted maxillary premolars. After a self-etching adhesive was applied, cavities were bulk filled with one of the felling materials. Fifteen teeth were used for each material. Cuspal deflection was measured by a custom made cuspal-deflection measuring device. One-way ANOVA analysis and Tukey's test were used to determine differences between the materials at the $95\%$ of confidence level, Correlation of polymerization shrinkage and cuspal deflection were analyzed by regression analysis. The amount of polymerization shrinkage from least to greatest was Heliomolar, Surefil < Heliomolar HB < Z100, Synergy Compact < Dyract AP < Pyramid, Compoglass F (p<0.05). The amount of cuspal deflection from least to greatest was Z100, Heliomolar, Heliomolar HB, Synergy Compact Surefil < Compoglass F < Pyramid, Dyract AP (p < 0.05). The amount of polymerization shrinkage and cuspal deflection showed a correlation (p<0.001).

• Journal of the Korea Convergence Society
• /
• v.8 no.1
• /
• pp.97-106
• /
• 2017

The purpose of this convergence study was to identify the effects of favorite music therapy on anxiety, fatigue, and vital signs of patients undergoing prostatectomy with spinal anesthesia. This study used a nonequivalent control group design. A sample of 45 patients was included. The experimental group was given music therapy during operation. The data were collected using a structured questionnaire and monitoring at 30 min before operation, at 20 min and 40min undergoing operation, and at arrival recovery room after operation. Data were analyzed using descriptive statistics, ${\chi}^2-test$, Fisher's exact test, t-test, repeated measures ANOVA. The experimental group reported significantly lower anxiety and lower fatigue than the control group(p=.001; p=.020). However there were no significant differences in the systolic blood pressure, diastolic blood pressure and pulse rate between groups(p=.821; p=.473; p=.782). This findings indicate that the tailored favorite music therapy can be an effective nursing intervention for patient undergoing prostatectomy with spinal anesthesia to reduce anxiety and fatigue related to operation.

• Journal of the Korean Society for Aviation and Aeronautics
• /
• v.28 no.2
• /
• pp.53-62
• /
• 2020

This study is to evaluate the accuracy of the meteorological information provided for the aircraft operating at low altitude. At first, it is necessary to identify crucial elements of weather information closely related to flight safety during low altitude flights. The study conducted a survey of pilots of low altitude aircraft, divided into pre-flight and in-flight phases, and reached an opinion that wind direction, wind speed, cloud coverage and ceiling and visibility are important items. Related to these items, we compared and calculated the accuracy of TAFs and METARs from Taean Airfield, Seosan Airport and Gunsan Airport because of their high number of domestic low-altitude flights. Accuracy analysis evaluated the accuracy of two numerical variables, Mean Absolute Error(MAE) and Root Mean Square Error(RMSE), and the cloud coverage which is categorical variable was calculated and compared by accuracy. For numeric variables, one-way ANOVA, which is a parameter-test, was approached to identify differences between actual forecast values and observations based on absolute errors for each item derived from the results of MAE and RMSE accuracy analyses. To determine the satisfaction of both normality assumptions and equivalence variability assumptions, the Shapiro-Wilk test was performed to verify that they do not have a normality distribution for numerical variables, and for the non-parametric test, Kruscal-Wallis test was conducted to determine whether or not they are satisfied.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.7
• /
• pp.350-356
• /
• 2020

Purpose: This study is a non-equilibrium control-like experimental study that attempts to develop a nursing intervention plan and to present basic data by grasping the effect of the heating therapy nursing intervention program on patients entering the recovery room after surgery. Method: The subjects of the study were 31 in an experimental group and 31 in a control group who applied one heating therapy program located in D city. The warming therapy was conducted in a recovery room in the range of 38 to 43℃ through a heater. The general characteristics of the subjects were determined by real number and percentage, and a homogeneity test between the experimental group and the control group was determined by 𝑥²-test and independent t-test. The difference in body temperature, pain, and tremor over time between the two groups was determined by repeated measure ANOVA. Results: First, the results of repeated measurements immediately after surgery showed significant differences in body temperature, pain, and tremor between the two groups. Second, temperature comfort showed a significant difference. Conclusion: The results confirmed that there was a positive effect on the patient in the intervention of warming therapy after surgery.

• Journal of the Korea Convergence Society
• /
• v.11 no.1
• /
• pp.65-75
• /
• 2020

This study is a convergence study of 596 high school girls in order to confirm the relationship between the desired number of meat side dishes and preference of fish side dishes in school meals. Data were analyzed by χ²-test, ANOVA-test, and Duncan's test using SPSS 22.0 program. The results of the study were as follows. The scores of the subjects for promoting palatability were highest in the items 'Easy to eat' and 'Without fishy'. The scores of 'Nutrition Education', 'Combined with Preferred Food', 'Without Fishy' and 'Add Preferred Flavor' tended to increase significantly as the desired frequency of meat side dishes increased from 'less than three times a month' to 'more than five times a week'. The findings of the study confirmed the relationship between the desired frequency of meat side dishes and preference of fish side dishes. Therefore, this study is expected to provide high school girls with a way to increase fish preference.

• Journal of the Korean Society of Radiology
• /
• v.14 no.5
• /
• pp.613-618
• /
• 2020

The average dose of Fast Low Dose C-arm CT used during hepatic arterial chemoembolization was compared with the average dose of DSA, and the exposure dose was analyzed by analyzing the average dose for each test technique in the total accumulated dose. 50 patients were randomly selected at our clinic and compared with Fast Low Dose C-arm CT, DAP and Air Kerma of DSA, and the accumulation of four test techniques (DSA, Fast Low Dose C-arm CT, Roadmap, Fluoroscopy) The proportion of dose (DAP, Air Kerma) was analyzed. For statistical comparative analysis, the corresponding sample T test and ANOVA test (post hoc test: Tukey) were performed using the statistical program SPSS 20.0. Fast Low Dose C-arm CT showed statistically significantly lower average dose (DAP, Air Kerma) than DSA. Reducing the number of tests for DSA can reduce the patient's exposure to medical radiation.

• International Journal of Highway Engineering
• /
• v.15 no.4
• /
• pp.95-105
• /
• 2013

PURPOSES: The purpose of this study is to research the influence of road traffic noise by road slope through the analysis of the field road traffic noise and determine consideration of road slope in the case of appling active noise cancellation. METHODS: This study measures vehicle's noise by the NCPX method at the three field sections such as uphill, downhill, and flatland. Total sound pressure and sound pressure level by the 1/3 octave band frequency are calculated through the raw field data. Total sound pressure level is compared by ANOVA test and T test statistically. The results obtained are compared in accordance with the road slope and the progress of the uphill section. RESULTS : The noise characteristic of early, medium, and last parts of uphill was found to be consistent when the vehicle was travelling uphill section. The result of statistical test, it was shown that total sound pressures are not different each other. According to the comparison by the geometry, sound pressure of the uphill section was higher than those of the flatland and downhill section in high frequency band. By the result of statistical test, total sound pressure are different according to geometry in the case of high vehicle speed. In the comparison result by road slope, each sound pressure level was found to be consistent in total frequency. However, total sound pressure proportionally increased according to road slope. CONCLUSIONS: It is found that the effect of road slope on noise generation was little in this experimental sites.

• Journal of Digital Convergence
• /
• v.18 no.1
• /
• pp.177-186
• /
• 2020

The purpose of this study was to identify the mediating effect of organizational citizenship behavior in relation between incivility and professional quality of life. The data collected from June 8, 2018 to June 29, 2018, and the questionnaire from 250 nurses at 3 general hospital in D city. The data were analyzed by t-test, ANOVA, Scheffe's test, Pearson's correlation, hierarchical analysis and Sobel test. Organizational citizenship behavior showed perfect mediating effect in the relationship between incivility experienced by nurses and compassion satisfaction, and partial mediating effect in the relationship between incivility experienced by nurses and burnout. The results indicate that it is necessary to develop strategies and applications to enhance organizational citizenship behavior for improved professional quality of life of a nurses who experience incivility.

• Journal of the Korea Convergence Society
• /
• v.9 no.2
• /
• pp.371-380
• /
• 2018

The purpose of this study was to investigate the effects of patient controlled analgesia(PCA) convergence education on postoperative pain management in spinal surgery patients. Sixty spinal surgery patients were included. For the experimental group(n=30), PCA education using video, booklet, and a PCA model practice was provided before surgery. The data were collected using questionnaire and were analyzed using descriptive statistics, ${\chi}^2-test$, Fisher's exact test, t-test and repeated measures ANOVA. PCA knowledge-attitude, PCA satisfaction and pain control satisfaction were higher in the experimental group than the control group(p<.001; p=.001; p<.001). Postoperative pain and frequency of additional analgesia use of the experimental group were significantly lower than those of the control group(p<.001; p=.001). This findings showed that the convergence PCA education of audiovisual aids with PCA practice training could be effective pain management intervention in patients undergoing spinal surgery. These apply to development of convergence nursing interventions in clinical practice.