가정에서 가족의 식생활을 책임지고 있는 주부들은 식품안전과 관련된 정보에 매우 민감하여 주부들에게 어떤 정보를 제공했을 때 안심하고 식품을 구매하는지를 알아보는 것은 매우 중요하다. 이 연구는 건강신념모형에서 건강행동을 촉진한다고 알려진 지각된 위협, 행동평가, 자기효능감 같은 요인들이 주부들의 실제 식품안전 인식과 행동에 얼마나 영향을 미치는지를 알아보기 위해 이루어졌 다. 본 연구는 191명의 가정주부를 대상으로 이루어졌으며, 건강신념모형의 주요변수인 지각된 이익과 지각된 장애, 자기효능감, 지각된 심각성과 지각된 개연성 그리고 식품안전 행동에 영향을 미친다고 알려진 건강지향성과 지식수준을 측정하기 위한 설문지가 사용되었다. 일반적 특성을 분석한 결과를 보면 교육수준이 높을수록 그리고 대도시에 살수록 식품안전에 대한 위협을 더 많이 느끼고 안전한 식품을 구매하려는 경향이 더 높았다. 또한 연구 변수간의 상관관계를 분석한 결과를 보면 안전한 식품에 대한 지식이 더 많을수록 그리고 건강에 대한 관심이 높을수록 상대적 이익이나 자기효능감도 높으며 그에 따라 안전한 식품을 구매하려는 경향이 높은 경향을 보였다. 한편 건강신념모형에 근거한 식품안전 행동에 대한 개념모형을 구조방정식분석으로 검증한 결과 적합한 모형 적합도를 보였으며 구매행동에 지각된 위협보다 지식수준과 상대적 이익이 큰 영향을 미치는 것으로 나타났다. 이러한 결과를 볼 때 주부가 안전한 식품을 구매하도록 돕기 위해서는 방송이나 신문 같은 공적 경로를 적극 활용하는 식품안전에 대한 정보의 지속적인 제공으로 지식수준을 높여주고 위해성 정보보다는 예방이 가능한 정보 제공으로 안전한 식품을 구매하려는 노력이 실제로 가정의 건강을 지키는데 도움이 된다는 점을 홍보해야 한다는 것을 시사한다.

It is essential for medical equipment sterilization operations to prevent infections in the hospital. The low temperature plasma sterilization method using oxygenated water has the advantage of high efficiency and short time in sterilizing processes. However, a chamber which can hold constant vacuum condition without deformation is essential in the sterilizing system to apply plasma sterilization technique. In this study, therefore, the vacuum chamber is developed for 70 liter plasma sterilization device. The vacuum chamber is designed by checking the thickness, edge fillet value and rib of chamber through each simulation. And the performance of the chamber is investigated by vibrational modes and heat stress simulation. The prototype vacuum chamber is tested by experiments to verify the safety and efficiency for 0.1 Torr vacuum, and the result shows the expected vacuum level and displacement.

In this study, high thermal efficiency and eco-friendly coffee roaster is developed. The core element of coffee roaster is a roasting drum and most of the coffee roasting drum is a flat cylindrical barrel type. From the traditional shape of cereal puffing machine, we got the idea of the roasting drum. Oak barrel shape is well known high thermal efficiency system in korean heating cook system. Therefore, we designed the coffee roaster containing the oak barrel shaped drum and combustor nozzles which has an ability of roasting 3kg of coffee beans within 10 minutes of roasting time. With our developed coffee roasting machine, the heating speed of roasting process is very fast, and the roasting of coffee beans can be quickly finished. We experimented the roasting time and compared the results with other coffee roasting machines of the same amount of roasting capacity. The results were outstanding in roasting time and the quality of roasting. In spite of smaller fuel consumption, the roasting time was more shorter than flat cylindrical roasting drum.

고염식식습관은 다양한 질병을 일으키고 공중보건을 위협할 수 있다. 그 동안 고염식식습관을 통제하기 위한 다양한 시도가 이루어져 왔으나 건강커뮤니케이션을 통해 고염식식습관을 변화시킬 수 있는지에 대한 연구는 아직 이루어지지 못하였다. 본 연구는 고염식의위험성과 식습관의 통제가능성에 대한 인식이 고염식식습관을 얼마나 예측하는지를 검토함으로써 식습관 개선 교육을 위한 시 사점을 찾고자 하였다. 이러한 연구목적을 달성하기 위해 보호동기 이론의 하위요인인심각성, 취약성, 효율성, 효능 및 행동 경향을 측정하기 위한 설문지를 개발하였으며 설 문지를 충남소재 대학의 대학생들과 그들의 가족을 대상 으로 배포하였다. 설문결과를 SPSS프로그램으로 분석한 결과를 보면 다음과 같다. 첫째, 청년층은 장년층보다 나 트륨섭취가 더 많았다. 둘째, 상관관계분석에서 장년층은 고염식으로 인한 위험에 취약하다는 것을 알고 있지만 고 염식을 억제할 수 있다고 확신할 때 까지는 식습관을 바꾸지 않는다. 셋째, 구조모델분석에 따르면 대처지각이 높을수록 고염식식습관의 경향성이 낮아지는 경향을 보인다. 이 결과는 고염식식습관을 줄이기 위해서는 실행 가능한 정보를 제공하고 저염식을 하였을 때 어떤 변화가 발생하는지를 인식 시킴으로써 대처지각을 높이는 방안이 더 효과적임을 시사한다.

In this study, manufacturing equipments for urushiol free raw rhus verniciflua stem(RRVS) extracts are developed which do not need for drying process and high pressure device. The three layered pressure tank and heating medium oil boiler are designed which are more efficient than the conventional ones, and the safety of the tank is assured by the structural analysis software. Finally, the RRVS extracts are prepared by water extraction technique at 100℃ using the developed equipments. In the physicochemical experiments for the RRVS extracts, an allergen such as urushiol is not detected, whereas the antioxidant such as polyphenol and flavonoid are contained.

There is a need for the development of insulation products with excellent insulation performance and durable insulation for building components. Various policies has been trying to improve the energy efficiency of buildings. The development of energy-saving building materials is also evolving as the energy saving of buildings becomes a main trend. In public and commercial buildings, reliability and beauty are emphasized with respect to the safety of buildings. The purpose of this study was to develop a manufacturing equipment and technology for the development of high airtight stainless steel insulation doors that can meet energy saving design standards of buildings.

Although excessive intake of sodium is known to cause various diseases and threaten public health and policies for reducing overconsumption of sodium are being implemented, the theoretical research on sodium intake is incomplete. This study attempted to provide a policy basis by examining whether or not planned behavior theory, which is a typical health communication theory used to describe health-related behaviors, can be applied to explain sodium intake behavior. Especially, sodium ingestion behaviors were compared using the theory of actions planned for men and women as well as young people, middle-aged, and elderly persons, who are predicted to show differences in eating habits. In this study, questionnaires were prepared to measure the daily eating habits of subjects and subordinate factors of planned behavior theory: behavioral beliefs, outcome expectations, normative beliefs, compliance motivation, and control beliefs. Questionnaires were given to 93 college students and their families. As a result of the difference analysis and path analysis of the questionnaire responses, the following suggestions were obtained. First, age difference is more obvious than sex difference in terms of low salt intentions. For example, older people are healthier than younger people in terms of eating habits and health concerns. Second, the elderly are more likely to practice the low-salt formula when they are provided information on the benefits and effects of the low-salt formula compared to younger ones. Third, systematic efforts are needed to promote a culture that emphasizes the health benefits of a low salt diet rather than providing piecemeal information on the advantages and effects of a low salt diet.

Pico hydropower, which refers to generation under 5kW, has been adopted in many places in the world as a cost effective and reliable power supply. The turbine units are important components for pico hydropower and must be portable, simple to maintain. In this study, therefore, Turgo turbine units were developed which reported to be reliable, robust and able to operate efficiently over a range of flow rates. A 2D steady-state mathematical model was developed to calculate the performance and design the optimal geometry of Turgo runner. Also, a laboratory-scale simulator was constructed to test the operating performance and experiments were carried out to determine the effect on turbine efficiency of variation in speed and jet diameter. Under the best conditions, developed Turgo turbine efficiency was observed to be over 90% at a speed of 900rpm.

Electric motors in electric vehicles has quite fast torque response, thus fast minor feedback loops can be applied for vehicle slip control. In this study, a model following control based slip ratio controller is suggested. This paper introduced a novel strategy of control for wheel slip in electric vehicle by computer simulations. This paper suggested that the control strategy in this paper can control the driving motor torque to drive the wheel on the slippery road surface.