• Korean Journal of Veterinary Service
• /
• v.36 no.4
• /
• pp.273-281
• /
• 2013

This study investigated the effects of the alkaline detergent and acid rinse used for cleaning milking machines on the eight commercially available teatcup liner materials. The sample liners prepared for use in the clean-in-place process were analyzed by ultraviolet spectrophotometer, ion chromatography and liquid chromatography. Among the eight liner materials, the ultraviolet spectra of 3 sample liners were shown to have a similar peak shape after cleaning, but the ultraviolet spectra peak shape of 5 sample liners was noticeably changed. No products were detected by ion chromatography in any of the liner materials used in this study. When the liner materials were only treated with alkaline detergent, some additional peaks were observed using liquid chromatography which indicate the creation of molecular substance and elution from liner materials, however, these peaks disappeared when the liner materials were cleaned with the acid rinse. Therefore, we propose that an acid rinse should be applied, after cleaning the milking machine with the alkaline detergent.

• The korean journal of orthodontics
• /
• v.45 no.4
• /
• pp.190-197
• /
• 2015

Objective: The aim of the study was to analyze the prevalence and distribution of ectopic eruption of the permanent maxillary first molar (EEM) in individuals scheduled for orthodontic treatment and to investigate the association of EEM with dental characteristics, maxillary skeletal features, crowding, and other dental anomalies. Methods: A total of 1,317 individuals were included and randomly divided into two groups. The first 265 subjects were included as controls, while the remaining 1,052 subjects included the sample from which the final experimental EEM group was derived. The mesiodistal (M-D) crown width of the deciduous maxillary second molar and permanent maxillary first molar, maxillary arch length (A-PML), maxillomandibular transverse skeletal relationships (anterior and posterior transverse interarch discrepancies, ATID and PTID), maxillary and mandibular tooth crowding, and the presence of dental anomalies were recorded for each subject, and the statistical significance of differences in these parameters between the EEM and control groups was determined using independent sample t -tests. Chi-square tests were used to compare the prevalence of other dental anomalies between the two groups. Results: The prevalence of maxillary EEM was 2.5%. The M-D crown widths, ATID and PTID, and tooth crowding were significantly greater, while A-PML was significantly smaller, in the EEM group than in the control group. Only two subjects showed an association between EEM and maxillary lateral incisor anomalies, which included agenesis in one and microdontia in the other. Conclusions: EEM may be a risk factor for maxillary arch constriction and severe tooth crowding.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• v.26 no.4
• /
• pp.251-257
• /
• 2015

Objectives : We compared the clinical presentations of manic and depressive episodes and the treatment response among children and adolescents with bipolar disorder (BD) types I and II and BD not otherwise specified (NOS). Methods : The sample consisted of 66 patients, aged between 6 and 18 years, who were admitted for BD to a 20-bed child and adolescent psychiatric ward in a university hospital located in Seoul, Korea. Results : Patients with BD type I were more likely to have lower intelligence quotients and exhibit violent behaviors during manic episodes than patients with BD type II or BD NOS and to show better treatment responses during manic episodes than patients with BD NOS. Patients with BD NOS were more likely to have an irritable mood rather than a euphoric mood during the manic phase than patients with BD type I or II and to exhibit violent behaviors during the depressive phase and chronic course than patients with BD type II. Conclusion : Pediatric BD patients are heterogeneous with respect to their clinical characteristics. Implications for the usefulness of the current diagnostic subtype categories should be investigated in future studies.

• The Korean Journal of Food And Nutrition
• /
• v.23 no.3
• /
• pp.419-427
• /
• 2010

The focus of the current study was to investigate the physicochemical properties of a corn starch-sponge matrix prepared at a low concentration below gel forming by freeze-drying. The effect of variables(starch concentration, heating temperature, and heating hold time) on the physicochemical properties of the samples was analyzed by response-surface methodology. Regression models on the properties of samples such as hardness, springiness, and water solubility index(WSI) showed high correlation coefficients(r>0.95) and significant F values, but regression models for the other properties(swelling power, apparent viscosity, reducing sugar content, and digestibility) showed them to have relatively low significance. Sample hardness of sample showed the highest value at condition of $90^{\circ}C$ and 5%, whereas springiness was at a maximum at $130^{\circ}C$ and 5%. Also, at 1% of starch concentration, mechanical properties were greatly decreased as the relative humidity increased, compared with the 3% and 5%, especially in the hardness of samples. The WSI showed an increasing trend with heating temperature regardless of starch concentration. Overall, the physicochemical properties of freeze-dried corn starch-sponge matrix were influenced much more by starch concentration and heating temperature than by heating hold time. The results of this study show that the basic properties of freeze-dried corn starch-sponge matrix can be used for the specific food applications or as a functional material for its stability.

• Korean Journal of Clinical Pharmacy
• /
• v.32 no.1
• /
• pp.37-46
• /
• 2022

Background: Non-valvular atrial fibrillation (NVAF) is associated with ischemic stroke risk in the aging population. Observational studies have indicated beneficial effects of direct-acting oral anticoagulant (DOAC) against ischemic stroke compared to warfarin. This study aimed to investigate ischemic stroke incidence and bleeding risk in patients on DOAC therapy. Methods: Using the database of Korean Health Insurance Review and Assessment-Aged Patient Sample 2015, we conducted a retrospective cohort study. Study subjects with NVAF diagnosis and prescribed anticoagulants were enrolled. Propensity score (PS) matching by age, sex, comorbidities, and medications were used. The clinical outcomes were major adverse cerebro-cardiovascular events (MACCEs, ischemic stroke/systemic embolism, myocardial infarction, cardiac death) and bleeding events. A cox proportional hazard model analysis was performed to compare the outcomes with hazard ratio (HR) and 95% confidence interval (CI). Results: Total 4,773 elderly patients with NVAF were initially included. Four PS-matched groups including rivaroxaban vs. warfarin-only (n=1,079), dabigatran vs. warfarin-only (n=721), rivaroxaban vs. dabigatran (n=721), and switchers of warfarin to rivaroxaban vs. warfarin-only (n=287) were analyzed. Every group showed statistically similar results of MACCEs and bleeding events, except for the group of rivaroxaban vs. dabigatran. Rivaroxaban users showed higher risks of bleeding events than dabigatran users (HR 2.25, 95% CI 1.01-4.99). Conclusion: In the elderly patients with NVAF, efficacy and safety outcomes among oral anticoagulants including DOACs and warfarin were similar, while rivaroxaban are more likely to have higher bleeding risks than dabigatran. Further research using large size sample is needed.

• Journal of Korean Academy of Nursing Administration
• /
• v.15 no.2
• /
• pp.225-232
• /
• 2009

Purpose: The purpose of this study was to investigate the relationship among emotional labour, emotional expression and burnout of clinical nurse. Method: Data was collected from convenient sample of 178 nurses in 4 cities. The questionnaire measured the level of emotional labour, emotional expression and burnout of clinical nurse. The data were analyzed using descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficient. Result: The mean score of emotional labour was 3.34(${\pm}.41$), emotional expression was 3.49(${\pm}.51$), burnout was 2.94(${\pm}.58$). There were significant differences on burnout according to age, marital status, religion, clinical career, working unit, level of job satisfaction, satisfaction of work load, satisfaction of interpersonal relations. There was a significant positive correlation between emotional labour and emotional expression. The emotional expression was a significant negative correlation with burnout. Conclusions: From the studies reviewed, it can expect the positive effect to decrease the burnout of clinical nurses when the nurse administrators who have concern about nurses' emotional expression. These findings would be significant resource to promote understanding about emotional labour for nurses.

• Korean Journal of Occupational Health Nursing
• /
• v.32 no.3
• /
• pp.99-110
• /
• 2023

Purpose: This study examined the job stress and perception of unit managers' authentic leadership on clinical nurses' intention to stay in nursing. Methods: This descriptive cross-sectional study utilized self-administered questionnaires. The study recruited a convenience sample of 211 clinical nurses from threertiary hospitals in South Korea. The survey was conducted between July and August 2021. The collected data underwent hierarchical multiple regression analyses. Results: The regression analyses indicated that clinical nurses' intention to stay was significantly associated with job stress (B=-0.06, 95% CI [-0.09, -0.04]), six or more years of clinical practice (B=0.60, 95% CI [0.13, 1.07]), men (B=0.87, 95% CI [0.30, 1.44]), and being placed on their desired nursing unit (B=0.39, 95% CI [0.27, 0.76]). Intention to stay was not found to be associated with authentic leadership by the unit managers. Conclusion: It is essential to implement workplace health promotion programs to prevent and reduce job stress among nurses to retain proficient clinical nurses. Additionally, nursing workforce management strategies tailored to the specific sex and career path of nurses are necessary. Moreover, careful consideration should be given to nursing unit placements that align with the individual aptitudes of nurses.

• Journal of Korean Clinical Nursing Research
• /
• v.16 no.3
• /
• pp.51-61
• /
• 2010

Purpose: The purpose of this study was to determine the effect of needs for professional development and organizational climate on organizational socialization of clinical nurses. A cross-sectional analysis were performed to assess the factors affecting organizational socialization. Methods: The data used in this study were obtained from clinical nurses who were employed in a hospital (N=606). Using multiple regression, we tested variables to assess their effects on organizational socialization in this sample. The data were analyzed using descriptive test, t-test, ANOVA, Pearson correlation coefficiency and stepwise multivariate regression. SPSS 17.0 program was utilized for data analysis. Results: The mean scores of organizational socialization, needs for professional development and organizational climate were statistically differed by career ladder, educational level and position. Organizational socialization had significant positive correlations with the needs for professional development (r=.332, p<.01) and organizational climate (r=.523, p<.01). Those variables including career ladder explained 33.4% of organizational socialization. Conclusion: Our findings indicate that organizational socialization of clinical nurses could be enhanced by meeting the needs for professional development and organizational climate. Developing innovative educations for encouraging clinical nurses' carrier development and creating a positive organizational climate are mandated for clinical nurses to have constructive organizational socialization.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.9
• /
• pp.4380-4387
• /
• 2013

The purpose of this study was to investigate the level of clinical competence and influencing factors of clinical competence in nursing students. Convenience sample of 197 subjects were recruited from two colleges in D city. The survey was conducted from March 2nd to 21th 2011. The data was collected by questionnaires and was analyzed with SPSS statistics 21.0. The mean score of clinical competence was 3.96. Significant positive correlation among clinical thinking disposition, problem solving ability, major satisfaction, satisfaction with clinical practice, clinical competence were found. It was found that the effect of clinical thinking disposition, completion of logic course, problem solving ability on clinical competence was 27.2% and clinical thinking disposition influence on clinical competence in nursing students. The study findings suggest that to develop the effective learning program with achievement level of clinical competency for nursing students.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.6 no.1
• /
• pp.147-159
• /
• 2000

The purpose of this study was to investigate the performance of clinical competency in nursing graduates and clinical nurses. The total of 234 subjects returned the questionnaire with 95% of response rates. The subjects of the study constituted of 195 nursing graduates and 39 clinical nurses. Self report questionnaires were used to measure the clinical competence of nursing graduates and clinical nurses. This instrument had four dimensions of competency : client and health need, nursing process, professional role, and nursing interventions. The data were analyzed by utilizing SPSSWIN and the results were as follows. 1) The mean score of the nursing intervention dimension was the most with 3.82 compared to professional role dimension(3.06), nursing process(3.03), client and health need dimension(2.94) in nursing graduates. 2) The mean score of the nursing intervention dimension was the most with 3.04 compared to client and health need dimension(2.82), professional role dimension(2.81), nursing process(2.77) in clinical nurses. And all of these dimensions' scores were lower than the nursing graduates' scores. 3) The mean scores of nursing process (t=3.76, p<.001) and professional role dimensions(t=3.53, p<.001) in nursing graduates were significantly higher than clinical nurses' scores. Our suggestions based on the results of this study is : 1. It is recommended to repeat the same designed study in large sample of clinical nurses for further study.