• Journal of Biosystems Engineering
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• 제41권4호
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• pp.389-395
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• 2016

Purpose: Drying is one of the most widely used methods for preserving agricultural products or food. The main purpose of drying agricultural products is to reduce their water content for minimizing microbial spoilage and deterioration reaction during storage. Methods: Although numerous drying methods are successfully applied to dehydrate various agricultural products with little drying time, the final quality of dried samples in terms of appearance and shape cannot be guaranteed. Therefore, based on published literature, this review was conducted to study the drying characteristics of various agricultural products when different drying methods were applied. Results: An increase in the drying power of sources-for example, increase in hot air temperature or velocity, infrared or microwave power-and the combination of drying power levels can reduce the drying time of various agricultural products. In addition, energy efficiency in drying significantly relies on the compositions of the dried samples and drying conditions. Conclusions: The drying power source is the key factor to control entire drying process of different samples and final product quality. In addition, an appropriate drying method should be selected depending on the compositions of the agricultural products.

• 한국산학기술학회논문지
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• 제16권2호
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• pp.1175-1181
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• 2015

본 연구는 국민건강영양조사의 제5기 원시자료를 이용하여 구강검진조사에 참여한 19세 이상 성인을 대상으로 주관적 구강건강상태와 실제 검진조사 결과의 치료필요도 조사를 비교 분석하였다. 상악과 하악 좌.우 대구치의 치료 필요도를 조사한 결과, 상악의 좌,우측 제1대구치와 제2대구치에서 본인 스스로 구강건강상태가 좋지 않다고 응답한 경우에 오히려 치료가 불필요한 경우가 90% 이상으로 매우 높았고, 하악의 좌,우 제1대구치와 제2대구치에서도 역시 같은 결과를 보였다. 또한 상.하악의 좌우 제1대구치와 제2대구치 모두에서 본인 스스로 구강건강상태를 매우 좋다고 인지한 경우는 전체의 10% 수준으로 매우 낮게 나타났으며, 구강건강상태가 좋지도 나쁘지도 않다는 응답인 '보통'에는 치료가 불필요하다는 검진결과가 96% 이상이었다.

• ALGAE
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• 제35권1호
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• pp.91-106
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• 2020

Incorporating renewable fuel into practice, especially from algae, is a promising approach in reducing fossil fuel dependency. Algae are an exceptional feedstock since they produce abundant biomass and oils in short timeframes. Algae also produce high-valued lipid products suitable for human nutrition and supplement. Achieving goals of producing algae fuels and high-valued lipids at competitive prices involves further improvement of technology, especially better control over cultivation. Manipulating microalgae cultivation conditions to prevent contamination is essential in addition to promoting optimal growth and lipid yields. Contamination of algal cultures is a major impediment to algae cultivation that can however be mitigated by choosing extremophile microalgae. This work describes the isolation of alkali-tolerant / alkaliphilic microalgae native to South Florida with ideal characteristics for cultivation. For that purpose, water samples from Lake Okeechobee were inoculated into Zarrouk's medium (pH 9-12) and incubated for 35 days. Selection resulted in isolation of three strains that were screened for biomass and lipid accumulation. Two alkali-tolerant algae Chloroidium sp. 154-1 and Chlorella sp. 154-2 were poor lipid accumulators. One of the isolates, the diatom Fistulifera sp. 154-3, was identified as a lipid accumulating, alkaliphilic organism capable of producing 0.233 g L^-1 d^-1 dry biomass and a lipid content of 20-30% dry weight. Lipid analysis indicated the most abundant fatty acid within Fistulifera sp. was palmitoleic acid (52%), or omega-7, followed by palmitic acid (17%), and then eicosapentanoic acid (15%). 18S rRNA phylogenetic analysis formed a well-supported clade with Fistulifera species.

• 대한예방한의학회지
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• 제16권3호
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• pp.15-26
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• 2012

Objective : Only a few studies have investigated the life expectance and health related quality of life (HRQOL) about stroke patients. The purpose of this study is to analyze the life expectancy, preference based quality of life(QOL) and quality adjusted life years(QALYs) of stroke patients. Methods : We used data of 10,533 adults from 4th Korean national health and nutritional examination survey 2009 for evaluating HRQOL of stroke patients. We also analyzed the life expectancy for stroke patients using life table from national public health data. Finally we calculated the QALYs with and without stroke conditions and assumed the difference of QALYs. Results : The mean age of stroke patients was assumed to be 65. Lower income and less educated groups were prone to be exposed to the stroke conditions. Common comorbidities of stroke patients were ischemic heart attack, hypertension, diabetes and hyperlipidemia. The proportions of participants who reported problems in each of the five EQ-5D dimensions increased significantly at chronic stroke group. Participants with chronic stroke conditions had an almost 6-fold higher risk of impaired health utility(the lowest quartile of EQ-5D utility score) compared with non stroke participants, after adjustment of age, gender, income, education, comorbidity variables. The differences of life expectancy and QALYs between non-stroke and stroke group from the age of 65 till death were assumed to be 0.767 year and 3.103 QALYs. Conclusions : Although the authors analyzed the affecting factors of QOL and assumed the differences of life expectance and QALYs about stroke patients using domestic national data and statistic references, well designed cohort studies should be needed to prove the causal effects of affecting factors and to assume more correct QALY differences.

• Journal of Preventive Medicine and Public Health
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• 제39권4호
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• pp.359-364
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• 2006

Objectives: The object of this study is to assess the relationship between socioeconomic factors and the predicted 10-year risk of cardiovascular disease by using health risk appraisal of ischemic heart disease. Methods: The study population was taken from The 2001 Korea National Health and Nutrition Survey, and it consisted of 1,566 men and 1,984 women aged 30-59. We calculated 10-year risk using the risk function of ischemic heart disease as developed by Jee. The educational level and equivalized household income were dichotomized by a 12 years education period and the median income level. Occupation was dichotomized into manual/non-manual work. We stratified the population by age(10 years) and sex, and then we rated the risk differences according to socioeconomic factors by performing t-tests for each strata. Results: There were gradients of the predicted 10-year risk of ischemic heart disease with the educational level and the equivalized household income, and thet was an increasing tendency of risk differences with age. Manual workers didn't show significant risk difference from non-manual workers. Conclusions: There was definite relationship between low socioeconomic position and the predicted risk of ischemic heart disease in the future.

• 한국식품조리과학회지
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• 제15권4호
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• pp.338-352
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• 1999

This research was carried to investigate the food preference of students, from elementary school, middle school, high school, university and industrial workers on Jinju, Sacheon and Jinyang by age and sex. The results were obtained as follows. In case of rice as the stationary food, plain white boiled rice showed the highest preference among all the groups. Most of groups liked most of one-dish meals such as kimbab, fried rice with kimchi, dumplings and bibimbab, especially the elementary school students and middle school students. On the other hand, high percentage of industrial workers disliked the western food such as pizza, hamburger and sphagetti. Most of subjects liked jajangmun, nangmun and bibimgooksu as noodles. As the side dishes generally they prefer the soup to stew. Male prefer the soup with beef and female prefer soup with vegetables. Stew with kimchi and stew with soybean paste showed high preference among most of groups. Most of broil food showed high preference, and students prefer meat to fish as broil cooking materials especially younger students. As a general they liked soybean sprout, spinach and wild sesame leaf as namul cooking method and they liked korean cabbage kimchi, chonggak kimchi, kackdoogi and dongchimi as kimchi. As a dessert subjects liked most of fruits and they liked yoghurt, fruit juice, milk, sikhae and soda as drinks generally. On the other hand snacks such as cooky, candy, cake, corn, rice cake, sweet potato have the lowest percentage preferance as a dessert, but students from elementary schools showed the highest preferance to sweet such as cooky, cake and candy than any other group. These food preferance results showed some nutritional problems especially young age students. They should eat more green-yellow vegetables, liver food and dried small sardine and they should reduce snacks such as candy and cooky and soda drinks. Therefore it is necessary to conduct nutrition education by parents, teachers and dietician together to improve their food habits and their health.

• 여성건강간호학회지
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• 제16권2호
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• pp.157-165
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• 2010

Purpose: The purpose of this study was to identify differences in Health Locus of Control (HLOC), depression, wellbeing, and Health Promoting Lifestyle Profile II (HPLP) between middle aged Korean and Korean-American women. Methods: Data from 80 Korean-American women living in Los Angeles, USA and 82 Korean women living in W-city, Korea, were collected using a self administered questionnaire including items on HLOC, HPLP, a Wellbeing Index and Major Depression Inventory. Results: There were statistically significant differences between the middle aged Koreans and Korean-Americans on mean age, education, religion, and current health insurance. Significant differences were found on HLOC (F= 2.504, p=.033) and Wellbeing (F=2.451, p=.036). The results also showed significant differences on HPLP (total HPLP, F=4.655, p=.001; physical activity, F=2.967, p=.014; nutrition, F=4.250, p=.001; spiritual growth, F=4.398, p=.001; interpersonal relations, F=2.648, p=.025; and stress management, F=5.201, p<.001) using ANCOVA. However, there were no significant differences on depression, or health responsibility in HPLP between the groups. Conclusion: Understanding middle aged women's health adjustments based on their culture will enhance the ability of health professionals to provide culturally congruent care and enable middle aged women to develop healthy lifestyles.

• Osong Public Health and Research Perspectives
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• 제9권6호
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• pp.289-298
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• 2018

Objectives: To describe the distribution of social factors, lifestyle habits and anthropometric measurements according to hypertension and Type-2 diabetes. Methods: A cross-sectional study was conducted in Gaza City, Palestine that included 379 patients (20-60 years) who had hypertension and/or diabetes. Three groups of patients were involved; 106 hypertensive (HT), 109 diabetic (T2DM) and 164 hypertensive diabetics (HT + T2DM). Results: The HT + T2DM group were older and had a higher body mass index compared to HT and T2DM groups. There were 62.3% patients who were female, 49.2% were highly educated HT patients, and 49.3% patients had a low level of education and were HT + T2DM. There were 55.8% patients who lived in large families. Patients who were passive smokers or never smoked before were mostly HT + T2DM, while active smokers and past smokers had T2DM. There were 48.2% patients who were highly physically active who had HT, 40.9% whom were moderately active had T2DM, and 53.8% of patients who had a low level of activity were HT + T2DM. Multivariate linear regression showed that having a diseased mother, living in a large family, being a past or passive smoker, or never having smoked, having a low or moderate level of activity, and having HT or HT + T2DM, were significantly associated with an increased body mass index. Conclusion: Parental health/disease conditions and environmental factors (social network and lifestyle habits) played the greatest role in the development of obesity and disease.

• 한국융합학회논문지
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• 제10권11호
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• pp.501-510
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• 2019

본 논문은 당뇨병의 관리전략 수립을 위해 일상생활에서 조절가능한 혈당조절 요인을 파악하고자 하였다. 개인이 조절하기 어려운 성별, 당뇨병 유병기간, 당뇨병 치료방법, 교육수준, 가구소득 등을 매칭한 코호트내 환자-대조군 디자인으로 분석을 하였다. 7기 국민건강영양조사(2016-2017) 원시자료를 이용하여, 983명의 당뇨병 환자를 분석한 결과, 289명(30%)만이 당화혈색소가 6.5% 미만으로 혈당이 조절되었다. 일상생활에서 조절이 가능한 당화혈색소 조절 요인 파악하기 위해 조건부 다변량 로짓스틱 회귀분석 시행한 결과, 매칭전 코호트에서는 당뇨병 유병기간, 당뇨병 치료 여부, 매칭 코호트에서는 체질량지수, 흡연, 안저검사가 당화혈색소 달성에 유의한 영향을 미치는 것으로 파악되었다. 본 결과는 집중 관리가 필요한 대상선정(장기 유병기간, 약물치료 대상자) 및 생활습관(체질량지수, 흡연, 안저검사 등) 관리전략을 마련하는데 근거자료로 활용되고, 지역사회내 국민건강 증진에 기여할 것으로 사료된다.

• 디지털융복합연구
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• 제19권12호
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• pp.477-486
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• 2021

본 연구의 목적은 국민건강영양조사 2016-2019년 자료 중 성인을 대상으로 대사증후군의 위험요인 탐색하고, 성별에 따른 위험요인의 차이를 규명하여 대사증후군 예방 및 치료에 기초자료로 제공하기 위함이다. 다양한 선행연구를 통해 대사증후군 위험요인을 수집하고, 4개의 머신러닝(Logistic Regression, Decision Tree, Naïve Bayes, Random Forest)의 방법을 이용하여 분석하였다. 남성과 여성 모두에서 Random Forest의 대사증후군 예측 정확도가 높았다. 대사증후군 유병에 영향을 주는 상위 위험요인으로는 여성과 남성 모두에서 BMI, 식이(지방, 비타민 C, 비타민 A, 단백질, 에너지 섭취), 기저질환의 개수, 연령으로 나타났다. 여성의 경우 교육수준과 초경 연령, 폐경 여부가 추가적으로 주요 위험요인으로 나타났고, 남성에 비해 연령과 기저질환의 개수에서 영향력이 큰 것으로 나타났다. 대사증후군을 예방하기 위해선 BMI, 식이, 질환의 이환, 초경 및 폐경여부를 고려하여 접근해야하며 후속 연구를 통해 다양한 중재 전략을 수립하고 검증해야 할 것이다.