• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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• pp.373-374
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• 2002

Magnetic fluid seals are used in a wide variety of gas and dust sealing applications. However, it is difficult to seal for liquid because of its characteristic. This study will be a basic guide for a magnetic fluid seal for liquid, especially for blood to be practically used in medical instruments such as rotary blood pumps by clarifying its seal properties. Sealing pressure test, durability test, and hemolysis test have been conducted for this seal. In this study, magnetic fluid, sealing fluid, eccentricity ratio, revolution speed were selected as parameters. As results of the tests, it has been found that the properties of magnetic fluid seal depend on the solvent and the saturation magnetization of magnetic fluid. Therefore, the selection of magnetic fluid is important for this seal. It also has been found that eccentricity ratio of the shaft caused harmful effect for seal properties. In conclusion, it has been showed that magnetic fluid seals could be possibly used in medical instruments such as blood pumps when blood come in contact with magnetic fluids.

• 성인간호학회지
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• 제26권2호
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• pp.171-180
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• 2014

Purpose: This study was to investigate the effects of upper meridian massage on cerebral blood flow, emotions, and sleep of the institutionalized elderly. Methods: This study was a nonequivalent control group pre- and post-test design. The participants were 50 elderly (26 in the experimental group; 24 in the control group) living in the institutions. Data were collected between July 9 and September 1, 2011. The data were analyzed using descriptive statistics, t-test, and $x^2$-test, Repeated Measures ANOVA, and Cronbach's ${\alpha}$ coefficient. Each participant in the experimental group received the upper meridian massage for 10 minutes, 4 times per week for 2 weeks. Each participant's cerebral blood flow and self-reported questionnaires were tested before treatment, after 1 week and 2 weeks during treatment sessions. Results: There were significant differences in sleep and emotions after 1 week and 2 weeks during treatment sessions. But cerebral blood flow measured by common carotid artery pulsatility index (CCA PI) and common carotid artery resistance index (CCA RI) demonstrated significant differences in 2 week point in time. Conclusion: These results indicated that upper meridian massage could be an effective intervention for improving cerebral blood flow, emotions, and sleep of the institutionalized elderly.

• 보건행정학회지
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• 제20권3호
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• pp.157-172
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• 2010

This study was conducted to evaluate the effects of health-behavioral change for the elderly group after community based education of chronic diseases management. We measured self recognition of health status, medication administration of hypertension and diabetes, regular check for blood pressure and blood sugar level, recognition of body indicators (weight, hight, blood pressure, blood sugar etc), knowledge level for chronic diseases management and smoking and alcohol habitation before and after education of chronic diseases management for participants. The subjects of this study consist of 432 people with community-dwelling Seoul citizen being active churches. Education programs designed essential parts of fundamental chronic diseases management, physical exercises for health promotion, diet and nutrition etc. All data collection completed for 5 months from Aug. 2008 to Dec. 2008 by trained surveyors via interview survey. The data obtained were analyzed using descriptive statistics, Wilcoxon Singed Rank test, McNemar test and Paired t-test. The results showed that self recognition of health status, knowledge level for chronic diseases management, recognition of body indicators were statistically significantly increased after the education of chronic diseases management. Also, blood pressure were statistically significantly decreased in elderly with hypertension and blood sugar were statistically significantly decreased in elderly of high-risk group. Based on these results, it was suggested that preventive education policy of chronic diseases management should be considered with priority coming true for successful aging society.

• 대한본초학회지
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• 제27권5호
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• pp.93-97
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• 2012

Background : The purpose of this study was to examine that the effects of Peony-Licorice (PL) mixture supplementation on post-exercise blood glucose and lactate in professional women basketball players. Methods: Eleven professional women basketball players were participated in this study. The subjects participated in two trials, PL supplementation and water supplementation. They did 20-meter shuttle run test, and measured blood glucose and lactate level before, immediately, after 3 minutes, after 5 minutes and after 10 minutes the test. Results: There was not interaction effect on blood glucose(p<0.433) and lactate(p<0.770) levels. Blood glucose and lactate levels were increased in PL group and water group after the test. Conclusion: PL supplementation could not affect changing blood glucose and lactate level. Therefore, we suggest that PL supplementation may not be positive ergogenic aid for improving exercise performance in professional women basketball players.

• 대한의용생체공학회:의공학회지
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• 제22권4호
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• pp.349-358
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• 2001

A novel electro-mechanical implantable ventricular assist system is developed as a bridge to transplantation or recovery for patients with end-stage heart failure. The developed system is composed of an implanted blood pump, an external monitoring system which stores data, and a wearable system including a portable external driver and a portable power supply system. The blood pump is designed to be implanted into the left upper abdominal space and provides blood flow from the left ventricular apex to the aorta. The pulsatile blood flow is generated by a double cylindrical cam. There was mo excessive heat emission from the blood pump into the temperature-controlled chamber in the heat test and no stagnated flow within the blood sac by the observation in the flow visualization test. Animal experiments were performed using sheep and calves. The maximum assist flow rate reached 7.85L/min in the animal experiment. The evaluation results showed that the developed system was feasible for the implantable ventricular assist system. The long-term in vitro durability test and mid-term in vivo experiments are in progress and mow the modified next model is under development.

• 대한임상검사과학회지
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• 제44권3호
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• pp.97-102
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• 2012

This study was performed to investigate the average fasting blood sugar levels from various Homeless and the old at nursing homes. Subjects (297 Homeless and 190 aged people) were examined in April, 2011 to June, 2010 in Daegu city area and only fasting blood sugar was measured. Subjects consist of 274 (56.30%) men and 213 (43.70%) women but primarily comprise over 60s. Blood was collected by vein-puncture, centrifuged and analyzed by TBA-C8000. The number of each subject for blood sugar levels of men groups were shown 197 (40.50%) with under 110, 24 (4.90%) with 110~125, and 53 (10.90%) with over 126. On the other hand, 127 (26.10%) with under 110, 33 (6.80%) with 110~125 and 53 (10.90%) with over 126 from women groups. This means that the average prevalence rate of diabetes is approximately 10% at each sex. Depending on age, the fasting blood sugar level over 126 increased with advancing age but the significance of results was not shown. Two groups, Homeless and aged people at nursing homes, the fasting blood sugar level was alittle high (2.9%) from Homeless but not significant. Regular blood sugar test and HbA1c test for people could be play an important role to prevent diabetic disorders under the government's interest.

• 한방비만학회지
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• 제6권2호
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• pp.85-94
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• 2006

Objectives : To examine the correlation between obesity and blood pressure, smoking and drinking (define drinking: do you mean alcohol?) habit in adolescence. Methods : Data collected on 524 subjects from among Kyungwon University students who had participated in a health screening test were reviewed. With the exception of 20 subjects whose health status was deemed to be abnormal based on current illness or results of the health screening test, 504 healthy cases were analysed. We investigated the correlation between obesity as defined by BMI and blood pressure, smoking and drinking habit. Results : 1. The blood pressure of the obese group was high. 2. blood pressure was higher in smokers, and drinking did not influence blood pressure. 3. Smoking had an effect on obesity and drinking had no significant effect on obesity. Conclusions : Obesity is related to blood pressure and smoking habit. Drinking had no significant effect on obesity and blood pressure in this sample.

• Journal of Ginseng Research
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• 제18권2호
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• pp.118-121
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• 1994

Alcohol and acetaldehyde concentrations were measured in the blood and brain of rats which were treated with 20% alcohol (control group) or co-administered 20% alcohol with ginseng extract residue roasted (test group). There was no change in blood alcohol concentration between control and test group. However, the brain alcohol concentration was lowered in the test group which was treated for seven days. The concentration of aldehyde in the brain and blood was lowered in the test group. The activities of monoamine oxidase b in various regions of brain were recovered to normal group in the test groups. However, the Quantities of naloxone binding receptors were not changed by ginseng extract residue roasted.

• 한국콘텐츠학회논문지
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• 제14권3호
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• pp.346-351
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• 2014

안전한 수혈을 위한 정확한 혈액형 검사는 필수적이다. 최근에는 혈액은행 검사 분야에 검사의 오류를 줄이고 검사의 효율을 높이기 위해 자동화 장비가 도입되어 사용되고 있으나 중소병원에서 이용하기에는 매우 고가로 도입하기가 어렵다. 이에 본 연구에서는 혈액형 검사결과를 저장 및 재확인 할 수 있고, 이미지 프로세싱에 의해 결과가 판독되는 원주응집법을 이용한 혈액형 검사 판독기를 개발하였다. ABO 및 RhD 혈액형 검사가 의뢰된 148개의 검체와 비예기항체 검사가 의뢰된 154개의 검체를 대상으로 판독 결과를 비교한 결과, 양성과 음성의 판독 및 반응강도의 판독이 100%일치하였다. 본 연구에서 개발된 판독기는 추가적인 검증을 거친다면 중소형 병원에서도 쉽게 도입하여 효율적이며, 경제적으로 이용할 수 있을 것이다.

• 대한수의학회지
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• 제49권1호
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• pp.9-15
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• 2009

The present study was carried out to examine the sustained release effect of the implantable bovine somatotropin (SRI-BST) formula. In the blood profile test in steers, the bovine somatotropin concentration in serum by radioimmunoassay showed the peak concentration on the first day after the implantation of the SRI-BST formula, and concentration proceeded for 5 days (p < 0.05). The insulin-like growth factor-1 concentration showed the peak concentration on the seventh day after implantation of the SRIF-BST formula, and concentration proceeded for 10 days (p < 0.05). The glucose showed the peak concentration on the first day after implantation of the SRI-BST formula, and concentration continued for 3 days (p < 0.05). The blood urea nitrogen showed the lowest concentration on the third day after implantation of the SRI-BST formula, and concentration continued for 7 days (p < 0.05). These results proved that the SRIF-BST formula was the sustained release effects in steers.