• Journal of dental hygiene science
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• v.8 no.1
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• pp.7-12
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• 2008

The purpose of this study is to improve the oral health after understanding the usage status of oral health items and to conduct active guidance for prohibition of smoking. The survey of 326 visitors for continuous oral health management in the dentist from April 2nd 2007 to May $20^{th}$ is accomplished. The data is handled from the SPSS 12.0 statistics program and we can get the results like below. 1. The number of people answering the usage of the smooth toothbrush is 64.5% which is higher in smoking peoples than in non-smoking ones (p < 0.001). Non-smoking people 61.4% answering '3 minutes more' per brushing their teeth is higher than smoking respondents. 2. The more used device is the interdental brush by non-smoking people 36.7% than smoking ones and the answer. 3. The percentage answering 'recommendation in the dentist' in the question about the motive using the oral health devices are nearly same in 69.6 % and 67.5% by non-smoking and smoking persons. The most reason not using these devices is 'don't know how to use this' and the number of smoking guys is 38.7% which is higher than that of non-smoking ones(p < 0.05). 4. The percentage of answering 'regular visiting the dentist', the method for oral health management is 28.3% in smoking parts and 35.3% in non-smoking ones which is slightly higher. From this study, the usage and the recognition of oral hygiene devices of the patient with smoking is a little bit lower than those of non-smoking patients and small difference is shown. So public relations of the effects and the necessity of the oral hygiene devices to all people have to be performed and the education and the activity prohibiting smoking are expanded by the dental hygienist based on the understanding of oral health when the patients are smoking or not.

• Journal of Hospice and Palliative Care
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• v.5 no.2
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• pp.163-171
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• 2002

Purpose : The purpose of this study was to analyze activities and satisfaction of volunteers for hospice care. Methods : We used 271 reports of hospice care and 20 questionnaire of activities and satisfaction of volunteers for hospice care from volunteers of in a community. Window SPSS-PC was used for the data analysis and the statistical method used were the descriptive statistics, t-test, ANOVA and Pearson's correlation coefficient. Results : 1) The highest score of activity was emotional area and the next activities was physical area. 2) The degree of emotional area (t=4.94, P<.05) and spiritual area (t=3.80, P<.05) was influence by religion of volunteers. 3) The mean score of satisfaction was 3.61. 4) There was correlation between duration of activity and death experience (r=.558, P<.05), emotional care (r=.698, P<.01), spiritual care (r=.474, P<.05), satisfaction (r=.651, P<.01), and the between physical care and family care (r=.559, P<.05), and the between spiritual cue and family care (r=.512, P<.05), and between emotional care and satisfaction (r=.536, P<.05). Conclution : The above result indicated that we must develope the management and education of volunteer of hospice care for various hospice care. Also, We should to encouraged the continuous education and efficient management.

• The Korean Journal of Nuclear Medicine Technology
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• v.16 no.2
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• pp.25-28
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• 2012

Purpose : It is important to reduce radiation dose associated with computed tomography (CT) scanning to as low as reasonably achievable (ALARA). With Dose Modulation Technic, user select a desired image quality and the system adapts tube current to obtain the desired image quality with greater radiation dose efficiency. In this paper, we presents a comprehensive description of fundamentals, clinical applications and radiation dose benefits of Dose Modulation Technic depending on Body Mass Index(BMI). Materials and Methods : In this study, 149 patients were examined(The mean age : $58{\pm}12.4$ years old). Biograph True Point 40 (Siemens, USA) and Gemini TF 64 (Philips. Cleveland) were used for equipment. When we used Care Dose 4D (Siemens, USA) and D-dom (Philips, Cleveland), we measured dose reduction and Computed Tomography Dose Index (CTDI) depending on BMI. Then we analyze data using SPSS Ver.18. Results : When we used Care Dose 4D, p-value is considered statistically significant by groups with the result that we compared Care Dose 4D with D-dom. On the other hand, p-value isn't considered statistically significant by groups using D-dom. Conclusion : Dose modulation based on the projection angle didn't affect degree of obesity. And When using Care Dose 4D, dose reduction rate in the normal patients were higher than the obese. In this study, there are errors on somato type. So I think more research have to be done. Then application of Dose Modulation technic can help in maintaining acceptable image quality while reducing radiation dose by 20-60% in most instances.

• Journal of the Korean Society of Radiology
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• v.11 no.2
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• pp.145-155
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• 2017

The purpose of this study was to compare and analyze changes in body composition and bone mineral density (BMD) during combined exercise in premenopausal women who did not take regular diet or regular physical activity within 6 months, In addition to being able to recognize the importance of pre-menopausal women's health and exercise, it also provides basic data for the development of educational programs for early prevention of osteoporosis prevention education I want to. The average age of the subjects in their 30s was 35.44 years and their height was 158.89 cm in their 30s. The average age of the subjects in their 40s was 41.89 and their average height was 160.78 cm in their 40s. Body composition, BMI, and body fat percentage were higher in the 30s, and bone mineral content, lean body mass, skeletal muscle mass, body weight, body fat mass and waist circumference were higher in their forties. Lumbar spine BMD and femur density were higher in their 30s than their 40s. Body composition, skeletal muscle mass, and fat mass increased in the 30s body composition by age - related complex exercise in premenopausal women, body fat mass, body fat percentage, waist circumference decreased. Body mass, body fat, body fat percentage, and BMI decreased in the 40s. The lumbar spine, the lumbar spine, the lumbar spine, and the femur were increased in the lumbar spine, the lumbar spine, the femur, and the femur. In the post-analysis results, changes in body composition were statistically significant due to decrease in muscle mass, body weight, body fat mass and BMI after combined exercise. In the change of bone density, lumbar spine BMD was measured as lumbar spine 1, lumbar spine 2, lumbar spine 3, And the femur density was increase.

• Journal of Nutrition and Health
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• v.47 no.4
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• pp.258-267
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• 2014

Purpose: The current study was designed to investigate the relationship of dietary calcium and riboflavin and their main dietary source (milk and dairy products) with the risk of periodontitis using data from 2007 to 2010 Korea National Health and Nutrition Examination Surveys. Methods: A total of 1,690 adults aged ${\geq}40$ years were included. We used results of dental examination regarding all sextant information on probing depth of at least two index teeth, nutritional assessment by a single 24-hour dietary recall, and demographic and medical information. The periodontitis group was defined as those who had 3-4 points, and the normal group was defined as those who had 0 points of Community Periodontal Index at all locations of six examination sites using a probe. Results: Using multiple logistic regression analysis, after adjustment for age, body mass index, energy intake, income, smoking, and alcohol drinking, we found an inverse relationship between consumption of dairy products and risk for periodontitis (OR: 0.465, 95% CI: 0.224-0.964) and between dietary riboflavin intake more than the estimated average requirements and risk for periodontitis (OR: 0.535, 95% CI: 0.300-0.954) in males. Conclusion: Adequate intake of milk dairy products and riboflavin may be recommended for prevention of periodontitis in the Korean male population.

• Journal of the Korea Organic Resources Recycling Association
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• v.2 no.2
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• pp.89-98
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• 1994

A survey was carried out in Seoul Metropolitan area during December of 1993 and January of 1994. The objective of the survey was to provide a useful information for the development and improvement of recycling policies, regulations and systems in Korea. Of the 782 individuals contacted, 473 individuals completed and retured surveys, of which 437 were usable. The results were analyzed using a statistical package SAS(Statistical Analysis System). The results indicated that 86% of apartment area has recycling bins, while only 33% of individual house(detached dwelling) area has those. About half of the respondents felt that food waste is the major source of household waste. The most serious problem to recycle more household waste is to provide space to store recyclables at the source. The majority of Seoul Metropolitans(78.5%) are willing to participate in recycling programs, while 14.4% want to participate only when there are economic incentives or benefits. Respondents who want economic incentives appeared to be low income people. 66.1% of total respondents said that they do not use disposables. However, only 53,0% among respondents under 30 years old answered they do not use disposables. People who graduated from middle high school only and are under 30 years old have tendency to dispose of used milk cartons without rincing and drying, while those who are over 40 years old and graduated from university prefered to rinse and dry used milk cartons before disposal. Regarding disposal of newspapers, only 43.9% of the total respondents separated newspaper from other types of used paper. In the case of alumium cans, 22.5% of the total respondents answered that used aluminum cans are not recyclables. Much higher portion (30. 4%) of the respondents who graduated from middle high school only felt that aluminum cans have no value to recycle. The results indicated that education and information regarding recycling are highly desirable.

• Journal of radiological science and technology
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• v.29 no.4
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• pp.241-247
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• 2006

Recently, interests and utilization on Computed Radiography(CR) and Digital Radiography(DR) tends to increase owing to an introduction of Picture Archiving and Communication System(PACS) and an accuracy control of special medical equipment for a breast imaging examination. This study was intended to compare and analyze a detector's imaging quality by each system to be used for the breast imaging examination by using ACR Phantom used at the accuracy control. As an evaluation method, a significance and reliability of image's value using the ACR Phantom was analyzed by using SPSS program. The results are followed. 1. For the fiber, there was 3.9 score in Screen-Film, 4.2 score in CR($50{\mu}m$), 3.2 score in CR($100{\mu}m$), and 4.2 score in DR. There was the high score in the order of CR($50{\mu}m$), DR, Screen-Film, and CR($100{\mu}m$)(P<0.05). 2. For the calcification, there was 2.7 score in Screen-Film, 2.5 score in CR($50{\mu}m$), 2.0 score in CR($100{\mu}m$), and 2.9 score in DR. There was the high score in the order of DR, Screen-Film, CR($50{\mu}m$), and CR($100{\mu}m$).(0.025(P<0.05). 3. For Mass, there was 3.8 score in Screen-Film, 3.8 score in CR($50{\mu}m$), 3.6 score in CR($100{\mu}m$), and 4.5 score in DR. There was the high score in the order of DR, CR($50{\mu}m$), Screen-Film, and CR($100{\mu}m$) (P<0.1). 4. As the total score, there was 10.4 score in Screen-Film, 10.6 score in CR($50{\mu}m$), 8.7 score in CR($100{\mu}m$), and 11.3 score in DR. There was the high score in the order of DR, $CR(50{\mu}m$), Screen-Film, and $CR(100{\mu}m$). As shown in the above results, it can be known that DR and Screen-Film System has higher image quality than CR. But, DR has unstability caused by element, and Screen-Film has the low image quality caused by artifact as disadvantages. When Dual-Side CR($50{\mu}m$) was used among CR systems which had the problem of low image quality, it was indicated that there was no difference with Screen-Film System. Because the radiation imaging examination tends to become digitalized, each system for the breast imaging examination will need to be developed and supplemented.

• Journal of radiological science and technology
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• v.33 no.1
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• pp.19-24
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• 2010

The aim of this study was to evaluate the change of bone mineral density according to distal radius rotation and the correlations of the lowest BMD measured by DXA at the lumba versus distal radius. The eleven males were projected distal radius by DR X-ray and the measurement of BMD by DXA of the appropriate position of the forearm were performed on 21 males. The healthy 11 and 21 volunteers without any history of operations, anomalies, or trauma were enrolled. The experiment was performed by two methods. First, The DR X-ray was measured distal radius of 11 males in pronation and supination with three, six and nine degrees, including a neutral position. The ROI was measured by the m-view program on the PACS monitor. Second, The DXA was measured distal radius of 21 males in pronation and supination with five and ten degrees, including a neutral position to evaluate the changes of BMD according to the rotation. A correlation of the BMD in the distal radius with BMD that lumbar spine was performed, along with analysis of the data by SPSS 12.0v. The mean rotation angle of the distal radius about eleven males DR X-ray measured $7^{\circ}$ of pronation (82%, n = 9), $6^{\circ}$ of supination and $0^{\circ}$ of neutral of (9%, n = 1), The total average rotation angle in 11 male was $5.1^{\circ}$ of pronation. The rotation angle of the distal radius about twenty one males on DXA measured $7.2^{\circ}$ of pronation (43%, n = 9), $7^{\circ}$ of supination (24%, n = 5), and $0^{\circ}$ of neutral (33%, n = 7), The total average rotation angle in 21 people was $4.1^{\circ}$ of pronation. The correlation of the analysis of lumba and distal radius were r = 3.0, p = 0.18. consequently, The correlation was not significance. Because BMD of lumba was not coverd for BMD of the distal radius, with a neutral position, Pronation is needed for BMD in the distal radius with the rotation angle measuring at the lowest BMD. the rotation angle about five degrees of pronation of the distal radius is recommended.

• Journal of Chest Surgery
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• v.32 no.10
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• pp.863-873
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• 1999

배경: 혈전 생성은 심혈관계 삽입물이나 순환 보조장치의 발전에 있어서 중요한 문제이므로 이러한 장치들의 혈전성에 대한 평가는 필수적이다. 따라서 이러한 장치들의 혈전성 연구를 시행하기 위한 효과적인 생체 외 실험 방식이 개발되어 원심성 순환 펌프의 발전에 큰 도움이 되고 있으며, 최근 엄밀하게 혈액과 공기의 접촉을 차단하는 방식이 믿을 수 있는 생체 외 실험 방식으로 강조되고 있다. 본 논문에서는 모의 순환 회로를 이용하여 기존에 행해진 연구 방법 상의 공기 접촉에 따른 핼액 응고 기전의 활성화 여부를 알아보기 위하여 공기 접촉 여부에 따른 혈액 인자의 변화를 관찰하여 확인하고, 또한 회로 내에서 생성된 혈전을 생체 내에서 형성된 혈전과 비교 분석하여 이 모의 순환 회로를 이용한 생체 외 검사가 새로 고안된 심혈관계 장치들의 혈전성을 평가하는데 있어서 동물실험을 대신할 수 있다는 기존의 주장을 검증하고자 하였다. 연구재료 및 방법: 바이오펌프를 이용한 같은 모의 순환 회로 한 쌍을 준비하고 동일 개체에서 얻은 헤파린을 첨가한(1u/$m\ell$) 신선한 혈액을 공기와 접촉시키지 않도록 한 A-회로와 공기와 접촉시킨 B-회로에 충전시켜 실험을 동시에 진행하여 결과를 얻었으며 총 12번 시행하였다. 회로에 충전한 혈액의 activated clotting time(ACT)은 정상의 3~5배였으며 ACT가 정상 범위의 1.5배가되면 실험을 끝냈고, Hematocrit(HCT), 혈소판, 동맥혈가스분석(ABGA), factor Ⅷ, factor \ulcorner, 섬유소원, thromboxane B2(TXB2), free hemoglobin(fHb) 등을 측정하였다. 실험이 끝난 후 A-회로와 B-회로에서 얻은 각 검사를 평가하고 분석하였으며 생성된 혈전을 생체 내에서 생성된 혈전과 조직 검사로 비교하였다. 본 연구의 자료분석은 SPSS 통계 프로그램을 이용하였고 유의수준 0.05를 기준으로 유의도를 판단하였다. 결과: 정상 ACT는 186.9$\pm$20.5초(평균$\pm$표준편차)이었고, 헤파린을 넣은 초기 ACT는 982.2$\pm$165.5초이었으며, 실험시간은 보통 60분에서 180분 사이였다. HCT, fHb, 혈소판, TXB2, factor Ⅷ, factor \ulcorner, 섬유원소의 초기값은 35.5$\pm$3.2%, 12.4$\pm$6.5 mg/dL, 354$\pm$56($\times$103)/$\mu$L, 72.6$\pm$15.1 mg/dL, 29.3$\pm$1.2%, 137.9$\pm$42.1 mg/dL, 그리고 17.7$\pm$9.7%이었다. 공기 접촉에 따른 차이를 보았을 때 ACT(p=0.398), HCT(p=0.988), fHb(p=0.898), 혈소판 (p=0.904), TXB2(p=0.985), factor Ⅷ(p=0.872), factor \ulcorner(p=0.489), 섬유원소(p=0.973)으로 전 예에서 통계적 유의성이 없었다. 실험 후 양 군에서 생성된 혈전의 현미경 소견은 B-회로의 혈전에 여러 군데 공기 방울이 관찰되는 것 이외에 A-회로에서 생성된 혈전과 차이가 없었고, 생체에서 생성된 혈전과 비교했을 때 그 양상이 같았다. A-회로와 B-회로에서 생성된 혈전의 총 량은 8.4$\pm$3.7 mL와 9.4$\pm$3.1 mL로 통계상 유의성은 없었다. (p=0.624). 결론: 모의 순환 회로를 이용한 혈전성 평가를 위한 생체 외 실험에 있어서 공기와의 접촉 여부는 혈액 응고 기전의 활성화나 혈전 생성에 별다른 영향을 미치지 않는다. 모의 순환 회로에서 형성된 혈전과 문헌에 있는 인체 내에서 형성된 혈전을 비교한 결과 그 형태가 일치하므로 이 모의 순환회로를 이용한 실험이 동물실험을 대신할 수 있다고 판단된다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.7 no.2
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• pp.132-140
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• 2005

This study was conducted to develop regional site index equations for main tree species in Gangwon, Gyunggi-Chungcheong, Gyungsang, and Jeolla area of Korea, using environmental and soil factors obtained from a digital forest site map. Using the large data set obtained from the digital forest map, a total of 28 environmental and soil factors were regressed on site index by tree species for developing the best site index equations for each of the regions. The selected main tree species were Larix 1eptolepis, Pinus koraiensis, Pinus densiflora, Pinus thunbergii, and Quercus acutissima. Finally, four to five environmental and soil factors by species were chosen as independent variables in defining the best regional site index equations with the highest coefficients of determination $(R^2)$. For those site index equations, three evaluation statistics such as mean difference, standard deviation of difference and standard error of difference were applied to the data sets independently collected from fields within the region. According to the evaluation statistics, it was found that the regional site index equations by species developed in this study conformed well to the independent data set, having relatively low bias and variation. It was concluded that the regional site index equations by species had sufficient capability for the estimation of site productivity.