• 대한지역사회영양학회지
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• 제26권4호
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• pp.259-269
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• 2021

Objectives: This study aimed to investigate the changes in the eating habits and lifestyle of middle-aged women in Gwangju during the COVID-19 pandemic. Methods: A total of 428 middle-aged women aged between 40 and 60 participated in a survey relating to general information, food and lifestyle, health functional food, and menopausal symptoms. The correlation between the variables was analyzed. Results: In the positive habits, the intake of nutritional supplements for immunity enhancement increased the most, followed by the use of media to learn healthy eating tips, and diets including healthy food. Negative habits increased in the order of frequency of taking delivery orders, levels of stress or anxiety, and time spent sitting or watching movies. In the case of recommended foods, the intake increased the most in the order of eggs, fruits, vegetables, milk/dairy products, and seaweed. Non-recommended foods increased in the order of meat, bread, rice, and noodles. The awareness of health functional foods was in the increasing order of interest, knowledge, consumption experience, and purchase amount. The type of health functional food intake was in the increasing order of probiotics, multivitamin and mineral supplements, vitamin C, collagen, and omega-3. Menopausal symptoms were in the increasing order of bone and joint pain, poor sleep quality, emotional ups and downs, loneliness, and feeling of emptiness. In the correlation of major variables, positive habits showed a significant positive correlation with recommended food intake and the recognition of health functional foods. Negative habits showed a significant positive correlation with non-recommended food intake and a significant positive correlation with menopausal symptoms. Recommended food intake showed a significant positive correlation with health functional food recognition and intake and menopausal symptoms. Conclusions: This study suggests that it is necessary to establish social measures to reduce the negative effects of the COVID-19 pandemic on middle-aged women and to ensure effective self-management through a healthy lifestyle since the pandemic has a long-term impact.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2002년도 추계 학술대회논문집
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• pp.88-94
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• 2002

Curved intakes are commonly used from commercial aircraft to military missile. Sound radiation from the intake of air vehicle affects cabin noise, community noise and military detection. In this paper, Sound radiation from curved intake is computed using the high order, high resolution scheme. The generalized characteristic boundary conditions, adaptive nonlinear artificial dissipation model and conformal mapping for high order, high resolution scheme are used. The geometric change of curved intake and the frequency of acoustic source are considered. Two dimensional Euler equations are solved for theses analyses.

• 대한기계학회논문집
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• 제12권2호
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• pp.295-307
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• 1988

본 연구의 목적은 흡기관내의 유체유동을 Lax-Wendroff 방법을 이용한 유한차분법으로 해석함으로서 엔진 흡기효율에 영향을 미치는 흡기관내 압력을 관찰하고 이를 이용한 흡기관계 최적 설계기술을 확립하고자 한다.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2008년 영문 학술대회
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• pp.480-485
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• 2008

In this study, two types of ramjet intake were designed for the flight condition of Mach number 2 and 5 and numerical analysis was performed. In order to widen the flight envelope range(Mach number $2{\sim}6$), movable intake concept was applied. The central body was designed so that the capture area ratio which is one of most important factors of ramjet intake design could be adjusted. And various types of cowl and movable insert part of shell were designed in order to control throat area which could increase total pressure recovery. The numerical results showed that the designed ramjet intake could be applied in various flights Mach number.

• 혜화의학회지
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• 제15권2호
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• pp.149-158
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• 2006

Objectives : This study is in order to contribute in straight dietary intake to paient and people through Oriental medicine literary investigation. Methods : Contents from 20 classical texts is investigated by importance, control, notice of Dietary intake. Results : Oriental Medicine regard control of dietary intake for important medical treatment.

• 한국생활과학회지
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• 제9권3호
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• pp.395-403
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• 2000

This study was carried out with 200 students of Chungbuk National University to investigate their dietary behavior and calcium intake and to find out variables among general characteristics of subjects which influence dietary behavior and calcium intake. Questionaires and interviews were used for data collection. The results obtained were as follows: 1) Dietary behavior of college students were not desirable as a whole. The percentages of skipping breakfast and irregular meal among students were over one third, respectively. Especially students living alone skipped breakfast more frequently, took their meals more irregularly, and their eating frequencies of 6 food groups were lower compared to students eating at home. 2) Calcium intake was significantly different according to gender. Mean calcium intake of male students was 744.0 mg/day and that of female students was 480.8 mg/day. Average %RDA of calcium intake of female students was 68.5%. Resource food contributing to calcium intake in the first order was milk, next was yogurt, Small anchovies, kimchi made with Chinese cabbage, ice cream and soybean curd in that order. From the results of this study, we found that the students living alone and female students are exposed to high risk of poor dietary behavior and undernutrition of calcium. In conclusion, nutrition education programs for them are required as soon as possible.

• Journal of Mechanical Science and Technology
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• 제19권3호
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• pp.894-904
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• 2005

The flow structure inside the intake head greatly affects the working efficiency of a vacuum cleaner such as suction power and aero-acoustic noise. In this study, the flow inside intake heads of a vacuum cleaner was investigated using qualitative flow visualization and quantitative PIV (Particle Image Velocimetry) techniques. The aerodynamic power, suction efficiency and noise level of the intake heads were also measured. In order to improve the performance of the vacuum cleaner, inner structure of the flow paths of the intake head, such as trench height and shape of connection chamber were modified. The flow structures of modified intake heads were compared with that of the original intake head. The aero-acoustic noise caused by flow separation was reduced and the suction efficiency was also changed due to flow path modification of intake head. In this paper, the variations of flow fields for different intake heads are presented and discussed together with results of aerodynamic power, suction efficiency and noise level.

• 한국식품위생안전성학회:학술대회논문집
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• 한국식품위생안전성학회 2002년도 춘계학술발표대회 및 심포지움
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• pp.139-142
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• 2002

This study carried out to evaluate TMDI(theoretical maximum daily intake) and EDI(estimated daily intake) for Korean by using MRLs, food intake, residue data, and correction factors and compare with ADI(acceptable daily intake) in order to estimate the health risk based on the pesticide exposure.

• 한국식품영양과학회지
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• 제24권6호
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• pp.892-900
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• 1995

본 연구대상자들은 열량공급 영양소인 탄수화물 : 단백질 : 지방으로 부터 각각 전체 열량의 63% : 14% : 24%를 공급받아 한국인의 권장비인 65 : 15 : 20에 근사한 값을 보여주고 있다. 이러한 이상적인 섭취양상은 sucrose/starch ratio나 P/S ratio cholesterol 등에서도 바람직한 섭취수준을 보여주고 있어 본 조사대상자는 식이를 통한 고혈압 위험인자를 비교적 적게 갖고 있는 것으로 나타났다. 단, 섭취량이 위험수준 이상 보다 높을 것으로 기대되는 나트륨의 섭취량은 조리과정에서 첨가되는 식염의 양을 측정하지 못하여 그 위함의 심각성을 도출하지 못했다. 영양소 섭취의 식품공급원의 순위와 개인간의 변이식품의 순위는 일반적으로 모든 영양소(열량, 단백질, 지방, 나트륨, 칼륨)에서 크게 다른 것으로 나타나 영양소의 주된 공급식품을 중심으로 빈도조사법의 설문지를 작성할 경우 개인간의 섭취량의 차이를 찾아내는데 크게 실패할 가능성을 보여주고 있다. 단, cholesterol의 경우는 제한된 식품에 의존해서 공급받는 것으로 나타나 공급식품과 변이식품의 순위가 크게 차이 나지않아 빈도조사법 설문지 개발시 주된 공급식품의 섭취빈도 조사만으로도 개인간의 변이를 충분히 반영할 수 있는 것으로 나타났다. 그러므로 질병과의 관련성을 규명하기 위해 식이조사에서 식품섭취 빈도법을 이용하여 설문지를 개발할 경우 주된 급원식품만을 포함시킨다면 개인간의 섭취량의 차이를 도출해 낼 수 없으나, 포함되는 식품항목의 금원식품 뿐 아니라 변이식품도 포함시키는 것이 개인간의 영양소 섭취의 차이를 찾아낼 수 있는 좋은 방법임을 본 연구결과는 시사하고 있다. 본 연구는 고혈압의 식이성 위험인자가 되는 영양소를 중심으로 개인간의 섭취량의 차이를 규명하기 위한 식이조사를 한다는 전제하에 조사에 사용될 식품섭취 빈도법의 설문지 개발시 포함시켜야 할 식품항목의 타당성을 공급식품과 변이식품의 순위 분석을 통해 관찰해 봄으로써 조사표 작성의 기초자료를 제공하고자 하였다. 앞으로 고혈압 이오의 다른 질병인 경우에도 이와같은 연구가 진행되어 각각의 질병연구에 적절한 조사표 작성의 기초자료들이 제공되어야 역학연구에서 식이조사의 효율성을 기대할 수 있을 것이다.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 1998년도 추계 학술대회논문집
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• pp.19-22
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• 1998

Automatic mesh generation procedures applied to industrial now problems lead to complex mesh topologies where usually no special considerations to mesh resolution are taken. In the present study a fast and flexible solution algorithm in combination with generalized higher order discretization schemes is presented and its application to intake port calculation is demonstrated.