• Macromolecular Research
• /
• v.17 no.11
• /
• pp.850-855
• /
• 2009

Keratin is an important protein used in wound healing and tissue recovery. In this study, keratin was modified chemically with iodoacetic acid (IAA) to enhance its solubility in organic solvent. Poly(hydroxybutylate-co-hydroxyvalerate) (PHBV) and modified keratin were dissolved in hexafluoroisopropanol (HFIP) and electrospun to produce nanofibrous mats. The resulting mats were surface-characterized by ATR-FTIR, field-emission scanning electron microscopy (FE-SEM) and electron spectroscopy for chemical analysis (ESCA). The pure m-keratin mat was cross-linked with glutaraldehyde vapor to make it insoluble in water. The biodegradation test in vitro showed that the mats could be biodegraded by PHB depolymerase and trypsin aqueous solution. The results of the cell adhesion experiment showed that the NIH 3T3 cells adhered more to the PHBV/m-keratin nanofibrous mats than the PHBV film. The BrdU assay showed that the keratin and PHBV/m-keratin nanofibrous mats could accelerate the proliferation of fibroblast cells compared to the PHBV nanofibrous mats.

• The Journal of Korean Obstetrics and Gynecology
• /
• v.21 no.4
• /
• pp.159-168
• /
• 2008

Purpose: The purpose of this study is to investigate the characters of Yangdorak in climacteric women. Methods: We analyzed the measurement value of Yangdorak on 37 climacteric women, aged 45-60 years. The patient's symptoms were assessed by modified Kupperman's index. Statistical analysis was performed using SPSS 13.0 for windows program. one-sample t-test. pearson correlation coefficient. Results: The results were as follows. 1. The average value of Yangdorak in 37 patients with climacteric women was 29.02$\pm$16.85. 2. According to the comparison of mean value with the each meridian value of Yangdorak. H1, H5 is high, F2, F3, F5 is low significantly. 3. The number of Pyesaek is more than Gyeokcha. 4. The Yangdorak value(F2) had significant correlation with modified Kupperman's index. Conclusion: The result suggests that Yangdorak values in H1, H5, F2, F3, F5 are related to climacteric. Further study on the yangdorak and climacteric syndrome measured by Kupperman's index is recommended.

• Food Science and Preservation
• /
• v.17 no.5
• /
• pp.674-680
• /
• 2010

This study was carried out to investigate quality characteristics of white breads with cabbage powder(CP) (0, 2.5, 5.0, 7.5 and 10.0%). L-value was significantly decreased by addition of CP, but a and b-values were increased(p<0.05). The degree of pH of dough and bread weight increased with increasing CP concentration, while bread volume, specific volume, and baking loss rate became reduced. The hardness of the breads added with CP was higher than that of the control group. Also, In sensory analysis, the breads with CP showed generally low scores in color, flavor, taste, texture and overall acceptability compared with the control. Taken together, the 2.5%, 5.0% treatment showed similar results with the control group, as compared to other treatments. Addition of CP influenced the color, bread volume and other rheological properties, which is disadvantageous for the quality of white bread. However, compared with the control group, up to 5% CP substitution for flour didn't show significant defferences in sensory test.

• Archives of Pharmacal Research
• /
• v.27 no.7
• /
• pp.720-726
• /
• 2004

Two Spectrophotometric procedures are presented for the determination of two commonly used H2-receptor antagonists, nizatidine (I) and ranitidine hydrochloride (II). The methods are based mainly on charge transfer complexation reaction of these drugs with either ${\rho}-chloranilic$ acid (${\rho}-CA$) or 2, 3 dichloro-5, 6-dicyanoquinone (DDQ). The produced colored products are quantified spectrophotometrically at 515 and 467 nm in chloranilic acid and 000 methods, respectively. The molar ratios for the reaction products and the optimum assay conditions were studied. The methods determine the cited drugs in concentration ranges of 20-200 and $20-160\;\mu\textrm{g}/mL$ for nizatidine and ranges of 20-240 and $20-140\;\mu\textrm{g}/mL$ for ranitidine with chloranilic acid and DDQ methods, respectively. A more detailed investigation of the complexes formed was made with respect to their composition, association constant, molar absorptivity and free energy change. The proposed procedures were successfully utilized in the determination of the drugs in pharmaceutical preparations. The standard addition method was applied by adding nizatidine and ranitidine to the previously analyzed tablets or capsules. The recovery of each drug was calculated by comparing the concentration obtained from the spiked mixtures with those of the pure drug. The results of analysis of commercial tablets and the recovery study (standard addition method) of the cited drugs suggested that there is no interference from any excipients, which are present in tablets or capsules. Statistical comparison of the results was performed with regard to accuracy and precision using student's t-test and F-ratio at 95％ confidence level. There is no significant difference between the reported and proposed methods with regard to accuracy and precision.

• Journal of the Korean Society of School Health
• /
• v.18 no.1
• /
• pp.71-82
• /
• 2005

Purpose: This study was undertaken in order to examine relations of eating disorders, health locus of control of college women, and to determine factors affecting eating disorders of college women. Method: The subjects were 282 students at a university in Busan. The instrument used for this study was a questionnaire on general characteristics, eating disorders (24 items), health locus of control (11 items) and self-esteem (10 items). Data were analyzed using means, percentages, t-test, ANOVA, Pearson correlation coefficients and stepwise multiple regression with a SPSS WIN 11.0 program. Result: Depending on BMI, there was no obese subject, 62.0% of the subjects were underweight, and 37.9% were normal. Over 40% of the subjects perceived them to be overweight while 62.1% of the women were underweight as defined by BMI. The total mean score of anorexia was higher than bulimia nervosa. There were significant differences in eating disorders according to BMI, perceived view of appearance, body satisfaction, experienced weight-control, and predictors of weight control method. Eating disorders showed a significant negative correlation with health locus of control and self-esteem. Stepwise multiple regression analysis revealed that the most powerful predictor of eating disorders was BMI. Experienced weight control, health locus of control and self-esteem and body appearance had significant effects on eating disorders. These predictive variables of eating disorders explained 27% of variance. Conclusion: The result of this study showed that eating behaviors among college women developed into eating disorders or were seriously disturbed. Therefore, to prevent eating disorders, health education should be provided to college women in relation to eating behaviors for health management.

• Journal of the Korean Society of School Health
• /
• v.30 no.1
• /
• pp.12-20
• /
• 2017

Purpose: The research is a descriptive study to identify the correlations among perceived health status, self-esteem, and personality and to determine the influencing factors of perceived health status in high school students who live in Uganda. Methods: Data were collected using a questionnaire from February to May 2014. The participants were 300 students in three high schools in Uganda. The collected data were analyzed by descriptive statistics, t-test, one way ANOVA, Pearson correlation, and stepwise regression analysis using SPSS 21.0. Results: The scale mean scores (4 scale) for perceived health status, self-esteem, extraversion, neuroticism, psychoticism, and lie, the last four being the types of personality covered in the study, were $2.27{\pm}0.37$, $2.27{\pm}0.31$, $2.13{\pm}0.33$, $2.55{\pm}0.41$, $2.36{\pm}0.27$, and $2.20{\pm}0.34$, respectively. The variables that showed positive correlations with perceived health status were self-esteem and extraversion and the ones that showed negative correlations with perceived health status were neuroticism, psychoticism, and lie. Self-esteem, extraversion, and neuroticism were proved to be major influencing factors affecting perceived health status. Conclusion: These results may be used as supporting data when developing health education programs to improve the health of Ugandan adolescents.

• Journal of Home Health Care Nursing
• /
• v.28 no.3
• /
• pp.233-242
• /
• 2021

Purpose: This study investigated the degree of, and factors influencing the spiritual care among home healthcare nurses. Methods: The subjects were 168 advanced practice nurses working in 94 hospital-based facilities for home health care located in Seoul, Gyeonggi-do, and Incheon Metropolitan City. Data were collected from January 14, 2019, to March 7, 2019, using structured questionnaires on spiritual care and related variables based on the literature. Data were analyzed by t-test, one-way ANOVA, Pearson correlation, and multiple regression analysis (stepwise) using SPSS Version 23.0 program. Results: The results showed that the degree of spiritual care of home health care nurses was 3.44 points out of a possible 5 points. Factors affecting nurses' spiritual care were spiritual well-being(𝛽=.36, p<.001), recognition of spiritual care as the nature of nursing(𝛽=.17, p=.016) and role of nurses(𝛽=.22 p=.002), regular-based education for spiritual care(𝛽=.23, p<.001), patients' discomfort with spiritual discussion(𝛽=-.18, p=.001), and nurses' experience in home health care area(𝛽=.14, p=.010), which explained 57.2% of the observed variation in spiritual care. Conclusion: This study suggests the need to develop regular-based education programs for facilitating spiritual care and strengthening home health care nurses' spiritual well-being and their positive perceptions toward spiritual care.

• Journal of Korean Critical Care Nursing
• /
• v.14 no.3
• /
• pp.14-25
• /
• 2021

Purpose : The purpose of this study is to examine the relationship between burnout, nursing work environment, patient-centered communication, and person-centered care nursing among intensive care unit (ICU) nurses and to identify factors related to person-centered care nursing. Methods : This is a descriptive study involving 156 ICU nurses. A structured questionnaire was used to assess burnout, nursing work environment, patient-centered communication, and person-centered critical care nursing performance. Data were collected from February to March 2020, and descriptive statistics, independent t-test, one-way ANOVA, Pearson's correlation coefficient, and multiple regression analysis were conducted using SPSS/WIN 25.0 program. Results : The mean scores for person-centered care nursing, burnout, nursing work environment, and patient-centered communication of ICU nurses were 3.52±0.42, 3.00±0.76, 2.62±0.34, 4.06±0.64, respectively. Person-centered nursing showed a statistically significant negative correlation with burnout (r=-.20, p=.013) and a statistically significant positive correlation with patient-centered communication (r=.49, p<.001). In addition, patient-centered communication (𝛽=.47, p<.001) was significantly correlated with person-centered nursing. Conclusion : The results of this study showed that the factors affecting the person-centered care nursing of ICU nurses were patient-centered communication. Therefore, it is necessary to develop and apply patient-centered communication programs for improving the person-centered nursing performance of ICU nurses.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.14 no.5
• /
• pp.413-420
• /
• 2021

This study is about a machine learning model for predicting insufficient parameters through other parameters when one of the collected parameters is insufficient. A regression model was created to predict time, temperature, humidity, CO2, and light quantity data through the machine learning regression analysis function in Matlab. In addition, the three models with the lowest RMSE values for each parameter were selected and verified. For verification, the predicted values were obtained by applying the test data to the prediction model derived from each parameter, and the correlation coefficient and error average between the measured values and the obtained predicted values were obtained and then compared.

• Journal of the Korea Convergence Society
• /
• v.12 no.9
• /
• pp.323-330
• /
• 2021

Purpose: This study aimed to identify the maternal functioning and related factors among early postpartum women. Methods: In this cross-sectional study, 243 women recruited from three women's hospitals. Participants completed a structured questionnaire in on-line or off-line between 6 and 12 weeks postpartum. Data were analyzed using descriptive statistics, the t-test, analysis of variance, Pearson correlation coefficients, and stepwise multiple regression with SPSS for Windows ver. 25.0. Results: The mean score for the maternal functioning was 73.28±16.78 out of 120 points. Maternal functioning was associated with postpartum depression (r=-.57 p<.001), and spousal and family support (r=.54, p<.001). According to the stepwise multiple regression, postpartum depression (β=-0.43, p<.001), spouse and family support (β=0.39, p<.001), employment (β=0.12, p=.012) and delivery method (β=-0.10 p=.026) had a significant relationship with the maternal functioning among postpartum women. These variables had an explanatory power of 49.0% for maternal functioning. Conclusion: It is necessary to develop and implement a maternal intervention program focused on alleviating postpartum depression and improving spouse and family support. This study will be the starting point for various studies by identifying the maternal functioning of postpartum women for the first time in Korea.