This study was performed to evaluate the tensile bond strength and modulus of elasticity of three permanent soft denture liners (Molloplast B , Ufi Gel C , Tokuyama ) before and after thermocycling. And their water sorption were also evaluated. Each soft denture liner was bonded to PMMA denture base resin blocks and the tensile bond strength and modulus of elasticity were measured by using universal testing machine. For the water sorption, weight measured after immersion of soft denture liners in 37+/-1degrees C water bath for 4 weeks. The results were as follows : 1. Molloplast B had the highest tensile bond strength, while Tokuyama had the lowest tensile bond strength, There was no significant difference between Tokuyama and Molloplast B in the both nonthermocycling and thermocycling. There was significant difference in tensile strength of Tokuyama before and after thermocycling(p<0.05). 2. For the modulus of elasticity, there was no significant difference between Ufi Gel C and Tokuyama in the both nonthermocycling and thermocycling. There was significant difference in modulus of elasticity of Tokuyama before and after thermocycling(p<0.05). 3. The failure modes of Molloplast B and Ufi Gel C were nainley adhesive type and that of Tokuyama was mainly mixed type in case of nonthermocycling and cohesive type after thermocycling. 4. The water sorption of each soft liners was within+/-2% in times (p<0.05) but, there was no significant difference among the soft liners in times.
Adhesives ; Baths ; Denture Bases ; Denture Liners* ; Dentures* ; Elastic Modulus ; Immersion ; Polymethyl Methacrylate ; Tensile Strength ; Water

Ethical problems in an emergency department (ED) are much more common than is usually recognized. But these difficult ethical dilemmas have not been dealt with by general medical ethicists. Most medical ethics guidelines tend to concentrate on chronic or at least relatively stable situations rather than on the acute, episodic cases that are typical in the ED. most ethical problems such as abortion, euthanasia, and professionalism can be solved after reflection and deliberation, and after a process of communication that reveals the values and interests of the patient or the patient's family. In contrast, when health care professionals in the ED recognize ethical problems, they often don't have enough time for an ethical consultation such as a Hospital Ethics Committee. Ethical principles such as autonomy, beneficence, nonmaleficence, and justice need to be applied to the unique setting of emergency medicine. Hence, it is necessary to develop ethics guidelines in emergency medicine and ethics education for health care professionals in emergency departments. At first, we collected cases involving ethical problems and reviewed the ethical and legal aspects of those cases. In this article, we summarize the ethical issues in emergency medicine, deal with actions in emergency medical services, and also consider the relationships between ethical issues and act on emergency medical services. We want to present the important factors that should be considered in ethical decision making within an emergency medicine department including patient decision making capacity, legal custody, and ethical principles.
Beneficence ; Decision Making ; Delivery of Health Care ; Emergencies ; Emergency Medical Services ; Emergency Medicine ; Ethicists ; Ethics Committees, Clinical ; Ethics, Medical ; Euthanasia ; Humans ; Jurisprudence ; Social Justice

The purpose of this study was to investigate the effects of a nutrition education and personalized lunch service program in a senior welfare center. A total of 30 elderly (14 males, 16 females) aged 62~89 years participated in this study. Nutrition education lessons (2 hour/lesson/week) were provided for 4 weeks. Also, ten weeks from week 3rd to week 12th, personalized lunch providing 1/3 personal needed energy was served 5 times for a week. After the nutrition intervention program, we compared anthropometric characteristics, blood biochemical characteristics, nutrition knowledge, dietary attitude and dietary intake using 24 hr recall with those before the intervention. The body weight (p < 0.001) and body mass index (BMI) (p < 0.001) were decreased. There were significant increases in score of nutrition knowledge (p < 0.01) and consumption of milk & milk products for snacks. There was a positive effect on fasting blood sugar (FBS) showing significant decreases in portion of impaired fasting glucose and diabetes mellitus (p < 0.05). Also, serum triglyceride (TG) was significantly decreased (p < 0.05). In evaluation of nutrient intake by Dietary Reference Intakes for Koreans (KDRIs), riboflavin (p < 0.01), vitamin C (p < 0.001), calcium (p < 0.05) were positively improved. The index of nutritional quality (INQ) and intakes of vitamin C (p < 0.001), riboflavin (p < 0.05), Ca (p < 0.01) and Fe (p < 0.05) were increased. In conclusion, this nutrition education and lunch service program providing 1/3 personal needed energy can be used to develop and implement a tailored nutritional intervention programs in the setting of a community senior welfare center to improve health and nutritional status of Korean elderly.
Aged ; Ascorbic Acid ; Blood Glucose ; Body Mass Index ; Body Weight ; Calcium ; Diabetes Mellitus ; Fasting ; Glucose ; Humans ; Lunch ; Male ; Milk ; Nutritional Status ; Nutritive Value ; Riboflavin ; Snacks

PURPOSE: The purpose of this research is to provide basic informations for the encouragements of premature infants' breast feeding. METHOD: From August 10 to October 9, 2002, we have carried out a statical research which surveyed 148 mothers of premature infants registered in NICU. The sample had generated cluster-randomly from 25 General Hospitals, all over the Korea peninsula and being surveyed with 74 questionnaires. RESULT: Mean hospitalized day of premature infants was 27.9 days. The mean total feeding period was 19.1 days and continuous breast feeding period 12.4days. They were interested in breast feeding education-they answered that they would join the breast feeding education if they were given the chance 87.8%. There was significant relation between babies fed only breast milk and the body weight of birth(p < .05). The reasons why mother gave the baby her breast milk include 'for her baby's health' and 'people said breast milk is good for babies' with a portion of 99%. The main reason why mothers could not execute breast feeding was 'the deficit of breast milk volume' 50.0% and other reason were 'because of start to support more nutritions '18.2%, 'difficulty to carry out the breast milk to hospital'13.6%. The reasen why mothers could not try breast feeding at first were 'deficit of breast milk volume'37.0%, 'not to be prepared for breast feeding because of unexpected delivery'32.6%. CONCLUSION: We need a program to inform importance and excellent of the breast feeding and a plan to increase the premature infants' breast feeding through the importation of fortifier.
Body Weight ; Breast Feeding* ; Breast* ; Education ; Hospitals, General ; Humans ; Infant, Newborn ; Infant, Premature* ; Korea ; Milk, Human ; Mothers ; Child Health ; Surveys and Questionnaires

The purpose of this study was to investigate nutrition knowledge, dietary attitude and a food habits of middle school students. The study was carried out through questionnaire. The subjects were 431 middle school students (boys 298, girls 133) in Chonbuk area. In nutrition knowledge, there were no significant differences in total scores between boys and girls. However, the girls showed higher score in knowledge of weight control than boys did (p < 0.05). In dietary attitude, there were significant differences in attitude of "balanced meal (p < 0.05)", "sufficient protein intake (p < 0.01)", "food diversity (p < 0.001)" and "overeating (p < 0.01)" between boys and girls. The boys showed better dietary attitudes than the girls did. In food habits, there were significant differences in the rate of skipping breakfast (p < 0.05), the rates of skipping dinner (p < 0.01), the frequency of snacks (p < 0.05), the type of snacks (p < 0.05) between boys and girls. The girls showed higher rates of skipping a meal and frequency of snacks than the boys did. It suggests that gender should be considered for an effective and practical nutrition education for middle school students to improve dietary attitudes and food habits.
Breakfast ; Education ; Female ; Food Habits* ; Humans ; Jeollabuk-do* ; Meals ; Snacks

OBJECTIVES: The purpose of this study was to correct the statistical errors in the previous article on "The Development of the 'Mental Fitness' Scale" (MFS) and to confirm the validity of factor structure via confirmatory factor analysis. METHODS: Based on re-analysis of the factor structure of 25 preliminary items using the original dataset, we identified 22 items of the MFS and assessed test-retest reliability. Concurrent validity was assessed by correlating the new set of MFS with total scores of the Beck Depression Inventory and Positive and Negative Affect Schedule. We also performed confirmatory factor analysis (CFA) in order to verify the factor structure resulting from the exploratory factor analysis. RESULTS: Re-analysis yielded five factors of 22 items, which is different from four factors of 20 items in the previous paper. 'Self-understanding' was added as one of the five factors. The test-retest reliability coefficients were significantly high, ranging between 0.57-0.73. Internal consistency was computed, and Cronbach's alpha for five factors ranged between 0.67-0.86, and was 0.91 for the total score. Concurrent validity and discriminant validity were both significant. The validity of five factor structure based on CFA was verified as root mean square error of approximation was significant. CONCLUSION: Based on results of confirmatory factor analysis, the validity and utility of the revised MFS was increased.
Appointments and Schedules ; Depression ; Factor Analysis, Statistical*

We experienced a case of adenocarcinoma arising in sacrococcygeal teratoma. The patient was a 52-year-old woman. She was admitted due to one month of sacral pain. She had a sacral mass since birth. On physical examination, anal fistula was present at the perianal area and pus drainage was noted. MR image showed multiple variable-sized cysts with inhomogeneous density. Resected specimen, mesuring 12.5 7.0 cm in diameter, showed multiple variable-sized cystic lesions admixed with grayish solid portion. The cysts contained mucoid material. The microscopic examination showed mature teratoma composed of cysts lined by pseudostratified ciliated columnar epithelium, intestinal mucosa, mature cartilage, bone, and fat tissue. A moderately differentiated adenocarcinoma developed from the cystic area in the mass.
Adenocarcinoma* ; Adult ; Cartilage ; Drainage ; Female ; Humans ; Intestinal Mucosa ; Middle Aged ; Mucous Membrane ; Parturition ; Physical Examination ; Rectal Fistula ; Suppuration ; Teratoma*

Purpose: To measure the level of reflection, this study analyzes diaries written by third-year nursing students before and after the debriefing stage in simulation training. A qualitative study using diary entries from 15 nursing students to explore reflection depth. Methods: Students engaged in simulation training and the debriefing stage, documenting their reflections in diaries. Before and after debriefing, reflections were rated from Level 1 (reflectivity) to Level 7 (theoretical reflectivity). Results: The total number of reflection levels rose significantly from 545 to 829 post-debriefing, enhancing higher-order reflection.The shift signifies a move from superficial to deep reflection, highlighting debriefing's role in fostering critical thinking. Conclusion The findings underscore the critical role of debriefing in enhancing reflective thinking in nursing education. There is a demonstrated need for further research into the specific elements of debriefing that are most effective at promoting deep reflection. Future studies should conduct comparative analyses of different debriefing methods and approaches across various educational settings. This research could lay the foundation for designing more effective debriefing strategies that foster critical thinking and improve learning outcomes in nursing education.

In this study, we investigated the anticancer activity of the fin of Thunnus Thynnus (TT ). TT was extracted with methanol (TTM ), and then further fractionated into four subfractions by using solvent partition method, affording hexane (TTMH ), methanol (TTMM ), butanol (TTMB )and aquous (TTMA )soluble fractions. We determined the cyto-toxicity of these four fractions in four kind of cancer cell lines, such as HepG2, MCF-7, B16-F10 and HT29 by MTT assay. The TTMM showed the strongest cytotoxic effect at the concentration of 150 microgram/mL, displaying 95% on the HepG2 cell lines and 82% on MCF-7 cell line. The morphological changes such as membrane shirinking and blebbing of cells were also observed by TTMM treatment in HT29 cell. In addition, we observed that quinone reductase (QR ) activity was elevated by only TTMM and TTMH treatments in HepG2 cell. QR activity was increased to around 2.0 and 1.8 times in TTMM and TTMH treated HepG2 cell at 100 microgram/mL, respectively, compared to that in control. Although further studies are needed, the present work could suggest that the fin of TT has a potential to be usable as a chemo-preventive agent against cancer.
Blister ; Cell Line ; Hep G2 Cells ; HT29 Cells ; Humans ; MCF-7 Cells ; Membranes ; Methanol ; NAD(P)H Dehydrogenase (Quinone)*

PURPOSE: The purpose of this study was to provide a basis for non-humidified low flow oxygen by nasal cannula and to provide a guide for consistent care in nursing practice. METHODS: A methodological study on the development of guidelines with experts' opinions on collected items, framing PICO questions, evaluating and synthesizing texts which were searched with the key words (low flow oxygen, nasal cannula, humidification of oxygen, guideline) from web search engines. RESULTS: Of the 45 researched texts on the web, 9 texts relevant to the theme were synthesized and evaluated. All patients with humidified or non-humidified oxygen therapy reported that they had no discomfort. CONCLUSION: The results indicate that there are no tangible grounds for patients' perceived differences between the humidified and non-humidified oxygen under 4L/min supplied by nasal cannula. with oxygen. Therefore, non-humidification oxygen therapy is strongly advised when suppling under 4L/min oxygen by nasal cannula (recommended grade A).
Catheters ; Humans ; Oxygen