• Restorative Dentistry and Endodontics
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• v.41 no.4
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• pp.246-254
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• 2016

Objectives: The aim of this investigation was to give insights into the impact of carbohydrate-electrolyte drinks on the likely capacity of enamel surface dissolution and the influence of human saliva exposure as a biological protective factor. Materials and Methods: The pH, titratable acidity (TA) to pH 7.0, and buffer capacity (${\beta}$) of common beverages ingested by patients under physical activity were analyzed. Then, we randomly distributed 50 specimens of human enamel into 5 groups. Processed and natural coconut water served as controls for testing three carbohydrate-electrolyte drinks. In all specimens, we measured surface microhardness (Knoop hardness numbers) and enamel loss (profilometry, ${\mu}m$) for baseline and after simulated intake cycling exposure model. We also prepared areas of specimens to be exposed to human saliva overnight prior to the simulated intake cycling exposure. The cycles were performed by alternated immersions in beverages and artificial saliva. ANOVA two-way and Tukey HDS tests were used. Results: The range of pH, TA, and ${\beta}$ were 2.85 - 4.81, 8.33 - 46.66 mM/L and 3.48 - $10.25mM/L{\times}pH$, respectively. The highest capacity of enamel surface dissolution was found for commercially available sports drinks for all variables. Single time human saliva exposure failed to significantly promote protective effect for the acidic attack of beverages. Conclusions: In this study, carbohydrate-electrolyte drinks usually consumed during endurance training may have a greater capacity of dissolution of enamel surface depending on their physicochemical proprieties associated with pH and titratable acidity.

• The Journal of the Convergence on Culture Technology
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• v.6 no.1
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• pp.215-221
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• 2020

The purpose of this study was to investigate convergence factors associated with cardiovascular disease in Korean elderly and use them as basic data for developing a customized health program for elderly. This was a secondary data analysis study using the 2017 National Health and Nutrition Survey and the study subjects included 1,617 individuals aged 65 and over. Regression analysis showed that perceived health status, walking practice and hypercholesterolemia were related to cardiovascular disease in elderly. In case of perceived health status, the incidence of cardiovascular disease was higher in 'good', 'fair', 'poor', and 'very poor' compared to 'very good'. Also, the incidence of cardiovascular disease was higher in the 'No' than in rhe 'Yes' of the walking practice, and higher in the case of elderly with the hypercholesterolemia. Based on the results, it is necessary to develop an active prevention nursing intervention program considering the underlying disease of the elderly.

• Journal of the Korean Society of Radiology
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• v.13 no.3
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• pp.489-493
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• 2019

Obesity is increasing in our country due to lack of lifestyle and physical activity. Semi-automatic program is used in existing fat calculation program using computed tomography. Although methods for solving related problems have been proposed, this study proposes an algorithm using morphology operation and We want to solve the problem with a new method that has a simple procedure and a relatively small amount of computation. As a result of repetition of erosion and expansion Automatic fat mass calculation can be done in the future by using the developed partitioning result. By providing an accurate segmentation tool, it will be helpful to doctors and reduce the expense and inspection cost of retesting. through morphology operation, it was found that the problem was solved from the image.Automatic fat mass calculation can be done in the future by using the developed partitioning result. By providing an accurate segmentation tool, it will be helpful to doctors and reduce the expense and inspection cost of retesting.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.5
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• pp.667-676
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• 2021

Recently, adolescents in Korea are exposed to the risk of postural imbalance due to overuse of smartphones and lack of physical activity due to the amount of learning. In addition, the need for effective non-face-to-face exercise services is increasing due to Corona 19. With this in mind, this study proposes an exercise service using an EMG sensor to overcome the limitations of non-face-to-face services while providing the effect of improving round shoulders for adolescents. An exercise program that can improve round shoulders was constructed, and an application in conjunction with an EMG sensor was implemented to exercise effectively. The exercise program was configured to alternately exercise the target muscle area for 4 weeks, and the function to provide feedback was added by measuring the EMG values that change accordingly. Through this study, we intend to provide the basis for exercise-based posture correction digital service, and improve the unbalanced body through this, thereby promoting the possibility of health promotion.

• Journal of Korean Public Health Nursing
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• v.14 no.1
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• pp.68-79
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• 2000

In order to provide a desirable direction for the health education on preventing drinking of elementary school students. by understanding the views held by elementary school teachers on drinking prevention education. 529 teachers at elementary schools located in Seoul were responded by constructed questionnaires during the period of Nov. 15 to Dec. 18 1999. The results of the survey analysis were as follows: 1. $84.6\%$ of the respondents said that schools should offer education programs on preventing drinking, and this view was more strongly shared by teachers with religions than non-religious ones. 2. $35.0\%$ of teachers responded that the education should start with 6th graders, while $28.3\%$ opted for 4th to 5th grades. With regard to the appropriate class in providing such education, $41.0\%$ selected physical education (PE), followed by extracurricular activity class with $35.4\%.\; 45.6\%$ of the respondents said discussion would be the most effective education method. while $35.4\%$ recommended using experiments. Growth and developmental defect and fall in diseases were pointed out as the most interesting topic for students by $39.4%$ and $31.2\%$ of the surveyed, respectively. As for the most effective media for education, $56.0\%$ recommended video, followed by cartoons $(21.5\%)$ and computer games $(19.5\%),\;63.7\%$ of the teachers picked school nurses as the most appropriate person in carrying out the education. The results of the finding show that it would be most desirable to provide health education on preventing drinking to senior elementary schoolers during the PE or extracurricular activity class by school nurses. The program would be structured to first show video clips on growth and developmental defect or fall in diseases resulting from drinking and to have discussions or experiments on related matters.

• Korean Journal of Childcare and Education
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• v.11 no.5
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• pp.1-18
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• 2015

Following the protocols for meta-analysis process, this study aims to determine the current state and effectiveness of stress reduction programs for young children. A population, intervention, comparisons, outcomes, study design strategy was established, and 2,322 pieces of literature from 3 electronic databases of RISS, KISS and DBpia using the key words such as"young children stress"were reviewed. Twenty-seven of these references met inclusion and exclusion criteria for systematic review and 19 references were selected for meta-analysis. Analysis results are as follows. (1) Most of the literature was published around 2010. Many types of stress reduction programs were related to physical activity for 5-year-old children. (2) Stress reduction programs were found to have positive effects on young children's stress reduction and especially, psychological therapy activity programs are more effective than others. The implications of the systematic review findings are discussed in the article.

• Journal of the Korean housing association
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• v.19 no.2
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• pp.1-10
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• 2008

The purpose of this research is to compare residents' movement and activities in SH apartment in Yangcheon-Gu, Seoul (SH apartment) and PHA apartment in St. Paul, Minnesota (PHA apartment) in order to improve the quality of rental housing environment. This study had surveyed 418 residents of SH apartments in Korea and used the secondary data gathered from 1,462 residents of PHA apartments in the United States. The results of this study are as follows: The criteria of Korean residents in SH apartments when choosing their residences are lower rent payment and shorter waiting time. They seemed to have no other options than public rental housing. On the contrary, American residents in PHA apartment had more option to choose from. Therefore, Korea needs to offer more variety types of residents that can be lead to better satisfaction of low income classes. Most of the SH apartments residents has lived for long-term, in the average of more than 6 years, and wanted to live continually at their current dwelling. PHA residents showed similar tendency. However, long term residency may lead to permanent occupation of the public rental apartment by the same family. Hence, a system which can provide equal residency opportunities to all low-income classes need to be developed. Residents of SH apartment were satisfied with the personal activities but were not satisfied with group activities among residents or regarding resident meetings. However, residents of PHA apartments were more satisfied with their management because there is more in-housing-complex activity programs. Therefore, more activity program for a resident should be developed after analysing programs of different apartments and current conditions in Korea. There were some noticeable divergences among residents, based on their age, term of residence and physical, emotional and mental problem, when evaluating in-housing-complex's programs. Thus, these factors are also need to be considered when planning and examining evaluation about the management of rental apartments.

• Polymer(Korea)
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• v.29 no.4
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• pp.331-337
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• 2005

In general, alkanethiolates having carboxylic acid in the tail group have been used as biorecepton. In this study, we have immobilized a cytochrome c protein using conjugated aromaticthiolates in order to improve the electrical property and physical stability of alkanethilolates. The pattern formation of self-assembled aromaticthiolate monolayers was as follow. Aromatic thiolates bound on the gold surface by the adsorption of 4'-mercapto-biphenyl-4-carboxylic acid and 4-mercapto-[1,1';4',1']terphenyl-4'-carboxylic acid were oxidized by the irradiation of deep UV light through a negative mask. The negative type pattern of the self-assembled monolayer (SAM) was obtained by developing with a deionized water. The pattern formation and electrical conductivity of aromaticthiolate SAMs was investigated by the measurements of STM and AFM. In addition, cytochrome c or ferrocene amide was immobilized onto the patterned substrate. We also studied on the effect of conjugated aromatic thiolates on the electrical activity of cytochrome c or ferrocene amide by cyclic voltammetry.

• Journal of Digital Convergence
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• v.15 no.1
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• pp.329-338
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• 2017

This study aims to identify factors to affect cancer screening utilization and differences in cancer screening by household income. This research selected 3,393 adults aged ${\geq}40years$ among surveyees from the 6th(2014) Korea National Health and Nutrition Examination Survey. We analyzed state of cancer screening utilization according to general characteristics, life style, health status, income level using descriptive statistics. Logistic regression analysis was used to examine the factors associated with cancer screening utilization. In result, cancer screening rate was significantly different according to household income. And the significant factors associated with cancer screening utilization were sex, age, marital status, education level, economic activity, private insurance, smoking, presence or absence of high physical activity, number of chronic diseases, and household income. This indicates that the effective cancer screening program on the low household income, chronic disease patients is needed, suitable for digital age. We believe that these results will be used positively for the equity of cancer screening utilization, providing the basic materials for the further research on the establishment of the health-related policy.

• Child Health Nursing Research
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• v.6 no.3
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• pp.305-315
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• 2000

In order to provide a desirable direction for the health education on preventing smoking of elementary school students, by understanding the views held by elementary school teachers on smoking prevention education, 529 teachers at elementary schools located in Seoul were responded by constructed questionnaires during the period of Nov. 15 to Dec. 18 1999. The results of the survey analysis were as follows: 1. 91.9% of the respondents said that schools should offer education programs on preventing smoking, and this view was more strongly shared by teachers with religions than non-religious ones. 2. 37.6% of teachers responded that the education should start with 4th-5th graders, while 36.0% opted for 6th grades. With regard to the appropriate class in providing such education, 41.1% selected physical education (PE), followed by extracurricular activity class with 28.8%, 45.1% of the respondents said discussion would be the most effective education method, while 39.9% recommended using experiments. fall in diseases and growth and developmental defect were pointed out as the most interesting topic for students by 33.2% and 28.1% of the surveyed, respectively. As for the most effective media for education, 57.2% recommended video, followed by computer games(19.2%) and cartoons (20.0%). 64.1% of the teachers picked school nurses as the most appropriate person in carrying out the education. The results of the finding show that it would be most desirable to provide health education on preventing smoking to senior elementary schoolers during the PE or extracurricular activity class by school nurses. The program would be structured to first show video clips on growth and developmental defect or fall in diseases resulting from smoking and to have discussions or experiments on related matters.