• Journal of Chest Surgery
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• v.21 no.6
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• pp.979-983
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• 1988

Calcium channel blockers may prevent myocardial injury during cardioplegia and reperfusion. This study was done to evaluate the effects of diltiazem cardioplegia on myocardial protection during ischemic arrest and recovery of myocardial function after reperfusion. Four formulations of crystalloid cardioplegic solutions, GIK solution[group I, n=12], diltiazem[lug/ml GIK] in GIK solution[group II, n=7], ],diltiazem[2ug/ml GIK] in GIK solution[group III, n=6] and diltiazem[4ug/ml GIK] in GIK solution[group IV, n=6] were compared in isolated working rat heart subjected to a long period [2 hours] of hypothermic arrest with multi-dose infusion. Diltiazem cardioplegia[group II, III and IV]was found to be superior in nearly all aspects. Diltiazem cardioplegia showed faster recovery of regular rhythm and lower incidence of ventricular fibrillation than group I did. In comparing mechanical function in all experimental hearts, the mean postischemic recoveries of aortic flow, cardiac output, peak aortic pressure, stroke volume and stroke work[expressed as a percentage of its preischemic control] were significantly greater in group II, III and IV[diltiazem cardioplegia] than in group I. The infused amount of cardioplegic solution was more increased by the addition of diltiazem to GI K solution. [p < 0.01] Creatine kinase leakage tended to be lower in hearts receiving diltiazem cardioplegia, especially in group III and IV[p<0.05] than in those receiving GIK solution only[group I]. Diltiazem cardioplegia results in the increased flow of cardioplegic solution and the decreased ischemic injury of myocardium during ischemic arrest and the improved recovery of myocardial function after reperfusion, and a dose-response relation must be established before clinical use.

• Journal of Korean Public Health Nursing
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• v.12 no.1
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• pp.37-54
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• 1998

For the purpose of investigating the job implementation of industrial health nurses catch hold of satisfaction, relational character of influence. A questionnaire survey was carried out on 131 nurses who employed at the manufacture of electronic products$(27.1\%)$, distribution industry$(38\%)$, service station$(22\%)$, construction$(10\%)$, et cetra The tool of this study was modified as completed from kang's(l991) checklist of questions were composed of the performance of nurses' duty(13 items), the factor of main influential character of nurses' job(11 items), job satisfaction(26 items). The results were as follows. 1. Industrial health nurses worked to labor follow up study after physical examination$(100\%)$, medication$(97.1\%)$, workers regular physical examination(95.5%), dressing$(94.1\%)$. 2. The factor of influence of job performance were personal relation$(100\%)$, satisfaction of nurses job performance$(86.7\%)$, environment of workplace$(86.7\%)$. 3. A period of long work experienced nurses felt the highest satisfaction as 3.44 point.

• Journal of Korean Public Health Nursing
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• v.30 no.1
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• pp.70-82
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• 2016

Purpose: The purpose of this study was to develop a multicultural education program for nursing students and to examine its effects on multicultural sensitivity and efficacy. Methods: A research design for this study was a non-equivalent control group, non-synchronized pre-post test. The experimental group (n=34) participated in a 13-week multicultural education program while the control group (n=35) attended regular classes having no relation with multiculture for the same period as that of the experimental group. Multicultural sensitivity and efficacy were measured before and after the program. Data were collected using self-administered questionnaires and analyzed using the PASW 18.0 program. Results: Total scores for multicultural sensitivity and efficacy were significantly increased in the experimental group compared with the control group after the program. The subcategories of multicultural sensitivity; 'respect for cultural differences', 'interaction enjoyment' and multicultural efficacy; 'general functions', 'considering multicultural families' were increased respectively, whereas others were not changed. Conclusion: Based on these results, it can be suggested that a 13-week multicultural education program is effective for improving nursing students' level of multicultural sensitivity and efficacy.

• The Korean Journal of Health Service Management
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• v.5 no.4
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• pp.149-159
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• 2011

The purpose of this research is to provide an available basis for marketing strategy by defining the cause-effect relation between the service level of staff members in dental clinic and purchasing behavior of the customers. This study was done in 10 days from November 2, 2009 to November 11, 2009 and the total 172 copies were used for the analysis. As a result of the correlation analysis, a significant positive correlation among all the measured variables was found. As a result of the structural model analysis, I found that the fair service among the variables of the service level significantly affects the building of relationship and the hospital image. The building of relationship and the hospital image significantly affect the positive oral spread. The building of relationship significantly affects the repurchase intentions but the hospital image does not affects the repurchase intentions. To sum up the result of this study, I found that the fair service and the building of relationship with patients are important variables in order to attract new patients and maintain existing customers. I recommend that the hospital continues to motivate staffs through internal marketing and conduct regular trainings. It is necessary to have patients satisfied with broadening responsibility and authority and set marketing strategy for the relationship with patients.

• Proceedings of KOSOMES biannual meeting
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• 2003.05a
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• pp.31-40
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• 2003

There are winds and waves in the sea, and they are changed frequently in accordance with the weather. By analyzing them which have the closest relation to the ship's safe voyage. evaluating the seakeeping performance and then taking a proper action, navigators should carry out safe navigation on the sea. A ship in seaways suffers continuous disturbances by irregular waves, and ship motions with irregular waves cannot be easily described as a system model which is adequate to a control system. But, in general, for seakeeping analysis, ship motions in irregular seas can be estimated by the superposition of the motion responses in regular wave components of the sea spectrum. After comparing and analyzing the winds and waves in major sea areas, this paper evaluates the navigational safety of ships on the Korean coast with potential dangerous seakeeping performance using the weather information provided by land. The conclusion is as follows : (1) It is possible that the safety of ships could be secured more accurately by evaluating the seakeeping performance of ships. (2) When the weather is bad, the departure of ships could be controlled by evaluating the navigational safety of ships. (3) When a ship is placed in commission in any area, this evaluation could be used to decide the type and size of ship in use.

• Journal of Magnetics
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• v.11 no.4
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• pp.182-188
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• 2006

The search for high-density recording materials has been one of most active and vigorous field in the field of magnetism. $FePt-L1_{0}$ nanoparticle has emerged as a potential candidate because of its high anisotropy. In this paper, we provide an overview of recent work at Argonne National Laboratory that contributes to the ongoing dialogue concerning the relation between structure and properties of the FePt nanoparticle system. In particular we discuss the ability to control structure and properties via dosing with Cr. Cr-dosed FePt films were grown via molecular beam epitaxy and annealed at $550^{\circ}C$ in an ultrahigh vacuum chamber, and were studied with the surface magneto-optic Kerr effect (SMOKE), scanning electron microscopy (SEM) and x-ray magnetic circular dichroism (XMCD). We found that small dosage of Cr helps to generate $L1_{0}$ phase FePt magnetic nanoparticles with small size, defined shape and regular spatial distribution on MgO (001) substrate. The nanostructures are ferromagnetic with high magnetic coercivity (${\sim}0.9T$) and magnetic easy axis in the desired out-of-plane orientation. We also show that controlling the lateral region where nanostructures exist is possible via artificial patterning with Cr.

• Journal of Society of Preventive Korean Medicine
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• v.7 no.1
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• pp.67-77
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• 2003

This study is to compare health related behaviors among Chinese, Korean Chinese in a Yanbian Province with a population of mainly Korean descendents and Koreans in Kangwon Province, Korea. Cross-sectional surveys were used to identify self-rated health, smoking, alcohol use, exercise and other lifestyle variables. A total of 739 Chinese, 663 Korean Chines, and 639 Koreans were surveyed using self-administered questionnaires. Few Korean Chinese(13.9%) reported they were healthy compared with Chinese(38.7%) and Koreans(36.3%). There was no difference in the prevalence of smoking by ethnic groups. More Koreans(48.5%) and Chinese Koreans(44.5%) reported drinking alcohol compared with Chinese(37.2%)(p < .001). Compared Chinese and Korean Chinese, fewer Koreans reported regular diet, exercise, health screening, and deep sleeping patterns. The lifestyle variables that affect the prevalence of disease were different by ethnic groups. In conclusion, ethnicity was shown to be an independent factor in relation to self-rated health, alcohol use, and other health lifestyle behaviors.

• Journal of environmental and Sanitary engineering
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• v.21 no.2 s.60
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• pp.36-46
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• 2006

The purpose if this study was to investigate mother' oral health management behavior to their children. Two hundreds sixty seven mothers with elementary school students were surveyed among the residents living of Iksan city, Korea. A questionnaire was constructed and administered to the samples. The research focused in the following items: the subjects' socio-demographic factors such as education level and employment and so on; their knowledge of plaque; the leading causes of caries, regular dental examinations; dental treatment; their interest in their children's dental health; the frequency of the subjects examining their children's teeth; non-cariogenic food preparation, etc. Being based in collected data, mothers' oral health management behavior to their children were analyzed according to maternal socio-demographic factor and result were following. There was a difference in the subjects knowledge of dental plaque in accordance with their employment or unemployment and family income. There was no difference in mother's oral health management behavior to their children according to parents' education level, the subjects' age and family income. Most of mother answered the main reason of dental caries was that their children did not toothbrush their teeth regularly and there was a difference in the understanding of the subjects in accordance with the education level of fathers and family income. The subjects had a low understanding of the effect of preventing caries with the help of fluoride. They didn't have enough understanding of water fluoridation. So it is necessary that active campaigns should be launched to enlighten people in relation to the ways of preventing dental caries with fluoride.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.15 no.2
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• pp.153-160
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• 2008

Purpose: This study was done to examine the level of compliance and the relation of related factors of nosocomial infection control among nurses in emergency rooms. The data will provide fundamental information for developing programs for nosocomial infection control in the emergency room. Method: Study participants were 183 nurses working in emergency rooms in general hospitals that had more than 500 beds and were located in Daegu, Daejeun, and Pusan. The survey was carried out from March 7 to March 26, 2006 and a structured questionnaire was used. Descriptive statistics, t-test, ANOVA and Sheffe test with SPSS 14.0 were used to analyze the data. Results: The average level for practice of infection control was relatively low Levels of compliance were high when the participants had: 1) regular conferences for nosocomial infection control, 2) positive perception of protection devices, 3) knowledge of whom to report and experiences of reporting needle stick injuries, 4) hospital guidelines for infection control and 5) enough equipment supplies from the hospital. Conclusion: Nosocomial infection control among emergency room nurses could be improved via personal, psychosocial, and organizational factors and related education.

• Aerospace Engineering and Technology
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• v.11 no.1
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• pp.185-191
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• 2012

This paper developed Helicopter Chassis Dynamometer System(HCDS) to perform the bench test of the scaled rotor blade and to design a scaled model helicopter flight test bed and accomplished the scaled helicopter ground test. The scaled helicopter should be checked the relation of thrust and power input to maintain regular RPM by collective pitch angle versus throttle input. It showed hovering performance results of IGE with OGE, the max. F.M. was 0.76 without ground effect. The results of the chassis dynamometer test of scaled helicopter will usefully apply to design the scaled helicopter and evaluate the rotor blade performance.