• Food Science and Preservation
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• v.20 no.4
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• pp.546-553
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• 2013

In this study, we examined the antioxidant activity of the Sumaeyaksuk (Artemisia argyi) tea extracts from different pre-treatment and extraction methods. Sumaeyaksuk was sun-dried for 3.5 days (control, RC) and aged at a temperature of $60^{\circ}C$ for 3.5 days (HA), 7 days (HB), and 14 days (HC), respectively. Each sample was extracted in $60^{\circ}C$ and $95^{\circ}C$ hot water for 2 minutes. The soluble solids content of HA from the $60^{\circ}C$and $95^{\circ}C$ hot water extraction were $0.52{\pm}0.18%$ and $0.92{\pm}0.18%$, respectively. The soluble solids content was increased by the higher extraction temperature. The reducing sugar content of RC was $9.55{\pm}0.18mg/g$ in the $95^{\circ}C$ extraction, which was significantly higher than in the $60^{\circ}C$ extracted sample. However, the reducing sugar content did not show a remarkable difference based on aging periods. The total phenolic compound content of the $95^{\circ}C$ extracted samples was $3.36{\pm}0.13{\sim}9.88{\pm}0.23mg/g$, which was significantly higher than that of the $60^{\circ}C$ extracted sample. The ABTS radical scavenging activity of the $60^{\circ}C$ extracted RA and HA samples were 35.63% and 95.10%, respectively. Moreover, the radical scavenging activity increased to 63.35% and 96.78%, respectively, in the $95^{\circ}C$ extracted samples. As a result of the high temperature, the extracted sample showed an increase in the FRAP. In the RC sample, the FRAP was two times higher in the $95^{\circ}C$ extracted sample ($181.28{\pm}2.90{\mu}M$) than in the $60^{\circ}C$ extracted sample ($83.88{\pm}0.43{\mu}M$).

• Food Science and Preservation
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• v.15 no.3
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• pp.483-490
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• 2008

Several tartaric acid-degrading bacteria were isolated from Korean grape wine pomace after enrichment culture at $30^{\circ}C$ for 10 days in liquid media containing tartaric acid Among them, strains KMBL 5777 and KMBL 5778 exhibited the highest level in the growth and tartaric acid degradability in a medium containing 0.2%(w/v) tartaric acid as a sole carbon source. They were identified as Acetobacter tropicalis based on their morphological and physiological characteristics as well as their 16S rDNA sequences. Blast search of the 16S rDNA sequences revealed that the isolated strains are closest to Acetobacter tropicalis. Homologies of the sequences of KMBL 5777 and KMBL 5778 were 96.0 and 98.9%, respectively with those of A. tropicalis LMG 1663. Both the two bacteria showed higher tartaric acid degradation at $25^{\circ}C$ that those at 20 and $30^{\circ}C$. They could degrade tartaric acid at a wide range of pH between 4.0 and 7.0 with the most rapid degradability at pH 7.0. However, when the bacteria were grown for 8 days, the same level of tartaric acid degradation was observed at pH 4.0, 5.0, 6.0 and 7.0, which was 90.0% of degradation of the acid.

• Korean journal of applied entomology
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• v.51 no.4
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• pp.421-429
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• 2012

The developmental time period of Aphis gossypii was studied in laboratory (six constant temperatures from 15 to $30^{\circ}C$ with 50~60% RH, and a photoperiod of 14L:10D) and in a cucumber plastic house. The mortality of A. gossypii in the laboratory was high in the 2nd (20.0%) and 3rd stage(13.3%) at low temperature but high in the 3rd (26.7%) and 4th stage (33.3%) at high temperatures. Mortality in the plastic house was high in the 1st and 2nd stage but there was no mortality in the 4th stage at low temperature. The total developmental period was longest at $15^{\circ}C$ (12.2 days) in the laboratory and shortest at $28.5^{\circ}C$ (4.09 days) in the plastic house. The lower threshold temperature at the total nymphal stage was $6.8^{\circ}C$ in laboratory. The thermal constant required to reach the total nymphal stage was 111.1DD. The relationship between the developmental rate and temperature fit the nonlinear model of Logan-6 which has the lowest value for the Akaike information criterion(AIC) and Bayesian information criterion(BIC). The distribution of completion of each development stage was well described by the 3-parameter Weibull function ($r^2=0.89{\sim}0.96$). This model accurately described the predicted and observed outcomes. Thus it is considered that the model can be used for predicting the optimal spray time for Aphis gossypii.

• Journal of Korean Academy of Nursing
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• v.25 no.3
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• pp.581-596
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• 1995

Clinical practice in nursing education provides an opportunity for students, through the process of ap-plying theoretical knowledge to practice, and to learn nursing skills as well as being socialized into nursing and as such decrease the reality shock of actual nursing practice. Because of a shortage of nursing faculty, the job of achieving the objectives of the clinical practice had been turned over to the head nurses. This resulted in many problems, such as, unclear location of responsibilities and inadequate feedback from head nurses. Therefore this study was done to introduce and evaluate the use of preceptors as a way to minimize the above problems, and to maximize the achievement of the clinical practice objectives. Using an adaptation of Zerbe's (1991) three-tiered team model, clinical practice was done using a preceptor, a head nurse and a clinical instructor, each with different and well defined roles. The subjects of this study were 67 senior students of the College of Nursing of Y University in Seoul whose clinical practice in adult nursing was carried out between May 1, 1994 and December 8, 1994. There were 22 preceptors who had at least two years of clinical experience and who were recommended by their head nurses. They were given additional education on the philosophy and objectives of the College of Nursing, on communication skills, on the theory and practice of education, and on nursing diagnosis and education evaluation. The role of the preceptor was to work one-to-one with students in their practice. The role of the head nurse was to supervise and evaluate the preceptors. The role of the clinical instructor was to provide the education program for the preceptors, to provide ad-vice and suggestions to the preceptors and to maintain lines of communication with the college. With each of these roles in place, it was thought that the effectiveness and efficiency of the clinical practice could be increased significantly. To evaluate the effectiveness of the preceptorship, the three - tiered model, Lowery's Teacher Evaluation Opinion Form translated and adapted to Korea was used to measure student statisfaction. The Clinical Practice Compentency Evaluation Tool developed by Lee et ai was also used to measure student competencies. The results of this study are as follows 1. The satisfaction with clinical practice was higher with the introduction of the perceptors than it was before they were used. (t=-5.96, p=<.005) 2. The clinical practice competencies were higher with the introduction of the preceptors than it was before they were used(t=-5.l3, p<.005) 3. In order to analyze areas not measured by the quantitative tools additional analysis of the open questions was done. The results of this analysis showed that : 1) The students felt positive about their sense of security, confidence, handling of responsbility, and being systematic. They also felt positive about improvements in knowledge, opportunities for direct care, and socialization. 2) The students felt negative about the technical part of their role, lack of knowledge by the preceptor, unprofessional attitudes on the part of the preceptor, difficulty in the role of the professional nurse(student). 3) The preceptors felt positive about their responsibility, motivation, and relationship with the college. 4) The preceptors felt negative about their bur-den. Introduction of the preceptorship model will lead to change and improvement in the negative factors discussed above, solve problems in the present clinical education system, increase continuity in the education of the students, help with socialization of the students and motivation of the preceptors to up-grade their education and increase their confidence. These objectives must be obtained to further the development of professional nursing, and thus, making the preceptorship a reality is our job for the future.

• The korean journal of orthodontics
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• v.34 no.5 s.106
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• pp.439-447
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• 2004

The purpose of this study was to investigate the influence of water, saliva and blood contamination on the bonding strength of metal brackets with a self-etching primer/adhesive to enamel. Ninety-six extracted human teeth were divided into four groups. The brackets were bonded to enamel with a self- etching primer (3M/Unitek Dental Products. Monorovia California) according to one of four protocols. The teeth were bonded in a dry condition (group D) or in contamination with distilled water (group W), artificial saliva (group S). or fresh human blood (group B) Shear bond strengths were tested using an Instron Universal testing machine. After debonding. bracket and tooth surfaces were examined with a stereomicroscope. In each group, four samples were selected and examined with a Scanning electron microscope of the prepared enamel surface and resin-enamel interlace. The results obtained were summarized as follows: Shear bond Strength if group D $(15.22{\pm}2.86MPa)$ and W $(15.20{\pm}3.85 MPa)$ Were higher than in group B$(12.56{\pm}2.94MPa)$ (p<0.05). There were no statistical differences in the shear bond strengths between groups D. W and S (p>0.05). There was a tendency to have less residual adhesive remaining on the enamel surfaces of group B than group D. The SEW morphology of group D and W showed a more roughened etching pattern than group S and B. Water or saliva contamination on bending of orthodontic brackets with Transbond plus self etching primer had almost no influence on bond strength In this study, the blood contaminated group showed the lowest bond strength, but it was above the clinically acceptable bond strength (5.9-7.8 MPa, Reynold, 1975). The results of this study suggest that acceptable clinical bond strengths can be obtained in wet conditions when self-etching adhesives are used.

• Journal of agricultural medicine and community health
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• v.30 no.1
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• pp.89-100
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• 2005

Objectives: This study was to find the effected factors on customer satisfaction for medical service and the willingness to revisit among hospital users Methods: The data was collected by a questionnaire survey from February 1 to April 30, 2004, and 600 samples have been analysed among users of university hospital, private hospital and public hospital in a local city. Results and Conclusions: The satisfaction total score to use hospital was 113.54 points(out of 175 point), these scores were constituted 39.10 points(out of 55 point) on satisfaction score for kindness of hospital employee, 36.28 points(out of 60 point) for equipment utilization and service formality, 18.59 points(out of 30 point) for environmental status and 19.57 points(out of 30 points) for reliability in medical examination and treatment service. The factors effected on satisfaction total score to use hospital were type of visiting hospital, age of customer, convenience to visit the hospital, experience of using other hospitals(R2=0.171). The effected factors of willingness to revisit scores were such as satisfaction score in medical examination and treatment service, satisfaction score of kindness hospital employee, experience of health examination and age of customer($R^2=0.370$). In conclusion, to raise the response's willingness to revisit. This must be reinforced by employee's kindness education and medical service quality.

• Journal of agricultural medicine and community health
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• v.28 no.1
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• pp.53-66
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• 2003

Objectives: To investigate the state of medical care around health sub-centers, public health doctors' participation and opinion in the process of district public health programs. Methods: The study included 1,036 public health doctors who worked at health sub-center all over the country. The data were collected for Feb, 2002 using self-administered questionnaire by mail. Results: One or two doctors were working at health sub-center and 33.5% of health sub-centers was located in the region of the separation of prescription and dispensing. There were another medical facilities in 45.9% of the administrative district(eup or myon) where health sub-centers were located. The count of medical utilization went down to 14.8${\pm}$14.8 per a day in Nov, 2001 from 18.0${\pm}$15.6 in May, 2000, and the decline was much more in the region of the separation of prescription and dispensing. Among public health programs in health sub-centers, public health doctors participated mostly in preliminary medical examination for vaccination and least in health education. They participated in implementation rather than planning or evaluation of health program. Over a half of public health doctors were found to be positive that health programs implemented in their health sub-centers would promote the level of health in community people and they were willing to participate in district public health program if community people were in need. Conclusions: Recently health sub-centers are required to turn into health promotion facilities rather than medical practice facilities. Health program in health sub-centers will be advanced in both quality and quantity by turning the role of public health doctors who have provided medical services mainly into managing health program. Persistent education about managing health program and the policy to motivate participation in health program should be provided for public health doctors.

• Journal of agricultural medicine and community health
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• v.36 no.4
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• pp.207-217
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• 2011

Objectives: The purpose of this study is to garner useful information through a comparative analysis of health behaviors and health states between the young-old and old-old elderly in a rural Korean area. Methods: We define the young-old elderly as those 65 to 74 years of age, and the old-old as those over 70. The survey was administered in October and November of 2009 at senior citizen centers in Sangju City, Kyongsangbuk-do, South Korea. The number of subjects surveyed approximated the demographics of the aged population of the administrative district of centers of 24 eup, myeon, and dong. Results: Compared with the young-old elderly, the old-old were vulnerable to population sociological characteristics. While there were many cases of contraction of diseases, only a small percentage of old-old elderly were engaged in regular exercise. In addition, the old-old elderly lagged behind the young-old in terms of physical activity, mental and oral health, hearing, and vision. Conclusions: The vulnerability of the old-old elderly in terms of physical and mental health needs to be acknowledged as various characteristics of the elderly that appears according an age group. A variety of disease prevention and health promotion programs that focus on the health behavior and status of the young-old and old-old elderly need to be developed and put into practice.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.3 no.2
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• pp.299-316
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• 1996

This study is the descriptive survey to provide basic data for nursing intervention to pain management of cancer patients by finding more effective way to manage pain with recognize pain level and pain characteristics. To achieve the purpose of this study, the subjects of this study are 110 male or female gastro intestinal tract patients who are older than twenty, are hospitalized in Pusan University Hospital from 1995. 5. 28 to 1995. 9. 25 and have had medical treatment. The modified pain assessment of cancer patients of Cornne, H. Rosermary, M. was used as the tool of study with 16 questionaries. The pain score consists of sensory intensity score and distress score. The data was analyzed by the SPSS statistical program number, percentage, mean, standard deviation, t-test, One Way Anova and Duncan's Multiple Range Test were utilized for analysis. The results were summarized as follows : 1. In population-sociological characteristics : in the age-range of subject, the sixties are most as 32.7% and the subjects after the forties are 89.5%, in sex of subjects, male patients are 66.4% and female 33.6%, in the number of family, the subjects who has 4 or above families are 70% and the subjects who live with their spouse, sons and daughters are 54.5% 2. In the disease characteristics : stomach cancer patients were most as 39.1%. And the most of patient who had never been operated before. In time of pain, the most of subjects were intermittent. In the type of pain, the most of subjects were 'dully pain' as 31.8%. Metastatic subjects were 30.0%. In the origin of pain, nervous pressure was 50.8%. The number of complication was 46 and most of complication are obstruction as 6%. 3. In the pain level, 91subjects complained pain. And mean pain score was $287.1{\pm}116.1$ The mean pain score of female subjects was higher than that of male subjects. 4. In the pain characteristics, the pain began usually at meal time as 40.7%. The duration of pain was mostly from 1 month to 3 months as 57.1%. The appetite was mainly concerned with the pain as 31.8%. The etiology of pain was usually tumor as 69.3%. The meaning of pain was incurable disease as 14.5%, anxiety, death and suffering. 5. The 56(61%) of 91subjects were treated with Analgesic pain management. The kinds of Analgesic is usually valentac as 46.4%. The medication was usually intramuscle as 66.1% at whenever necessary, Response of Analgesic after Medication was usually 'moderate release'. The side effects of medication were nausea as 26.8%. The average amount of morphine dosage hospitalized to cancer patients with pain was 80mg in a day and metastatic cancer patients with pain was 101.9mg in a day. 6. In the relation between the disease characteristics and pain level, there is a significant statistical difference : whether subjects had been operated or not : (t=2.88, p=0.005), time of pain is(t=3.34, p=0.005), stage of metastatic(F=9.323, P=0.0002), and type of pain(F=4.013, p=0.0008). In the pain level of diagnosis, Colon cancer was $353.3{\pm}81.7$(F=2.34, p=0.049), the origin of pain, nerve pressure $316.3{\pm}98.5$(F=2.44, P=0.045), In the complication, ascites and obstruction $324.9{\pm}96.8$(T=2.60, P=0.04).

• Tuberculosis and Respiratory Diseases
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• v.40 no.2
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• pp.104-111
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• 1993

Background: Gram-negative bacterial endotoxin induced septicemia is known to be a leading cause in the development of adult respiratory distress syndrome(ARDS). The mechanism of endotoxin induced lung injury is mainly due to the activated neutrophils which injure the capillary endothelial cells by releasing oxidant radical and resulted in pulmonary edema. We studied the change of antioxidant enzyme in the case of large or small, intermittant dose of endotoxin infused rat lungs. Methods: Endotoxin was given to the rat through the peritoneal cavity in the dose of 7 mg/kg body weight in the large dose group and 1 mg/kg for 10 days in the small dose group. Bronchoalveolar lavage (BAL) was done and rats were killed at 6, 12, 24 hours after single endotoxin injection in the large dose group and 3, 7, 10 days after daily endotoxin injection for 10 days in the small dose group. The lungs were perfused with normal saline through the pulmonary artery to remove the blood and were homogenized in 5 volume of 50 mM potassium phosphate buffer containing 0.1 mM EDTA. After centrifuging at 100,000 g for 60 minute, the supernatent was removed and stored at $-70^{\circ}C$ until measuring for superoxide dismutase (SOD), catalase, glutathione peroxidase (GSH-Px) and protein. Results: We observed the following results. 1) The lung wet/dry weight ratio and albumin concentration in the BAL fluids were increased to peak at 12 hours and neutrophil number in the BAL fluids were peak at 6 hours after endotoxin injection in the large dose group. 2) Cu, Zn SOD (IU/mg protein) was significantly decreased after 6, 12 hours after endotoxin injection in the large dose group. 3) There were no singnificant change in the level of Mn SOD, catalase, GSH-Px after endotoxin injection in both groups. Conclusion: Endotoxin in the large dose group produced the acute pulmonary edema and decreased the Cu, Zn SOD in the lung tissue after injecting endotoxin at 6 and 12 hours. These phenomenon may be due to the cell membrane damage by endotoxin. Further research would be necessary whther giving SOD by intratracheal route or method to increase the synthesis of SOD may lessen the acute lung injury by endotoxin.