• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.7 no.6
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• pp.11-20
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• 1986

최근 각종 언론매체나 소비자단체에 의해 과장되고 있는 무공해농산물 주장은 수확량감소 및 위화감조성등 득보다는 실이 많은 과학의 후퇴를 의미한다 할 수 있다. 일반농산물은 과연 오염됐는가? 아니면 무공해 농산물이란 용어자체가 공해란 말에 민감하게 반응하는 맹점을 이용한 유명무실한 허상은 아닌지 살펴보도록 한다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.12 no.3 s.102
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• pp.13-18
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• 1991

• The Journal of the Convergence on Culture Technology
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• v.5 no.1
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• pp.377-384
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• 2019

To cope with severe global warming and environmental pollution problem regulations on automobile emissions and fuel efficiency has been tightened around the world. Therefore zero emission vehicles which do not use fossil fuels such as electric vehicles have attracted attention by government and both industry and academia at developed countries. In the market, electric vehicles are being selected from more and more consumers because of technological advances and policy support. Recently another zero emission vehicle, hydrogen fuel cell vehicle, is drawing attention and is expected to become deployed widely. This paper reviews technology, current status and global trends of zero emission vehicle. The economical analysis of zero emission vehicles are also presented.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.1
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• pp.74-82
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• 2002

The present study is aimed to investigate the effect of the safety hat on the balance of body temperature by observation of the physiological response under hot working environment. The experiment was carried out in a climate chamber of 3$0^{\circ}C$, 50%RH for 70 minutes. To compare the two kinds of safety hat, 5 healthy male subjects worn safety hat without hole (called 'without hole') or safety hat with hole (called 'with hole') according to a randomized cross-over design. The main results of this study are as fellows: Rectal temperature and heart rate were significantly lower level in 'with hole'than in 'without hole'. The mean skin temperature was significantly higher in 'without hole'than in 'with hole'. Blood pressure were significantly low in 'with hole'. Sweat rate which was measured by weight loss before and after experiment was higher in 'without hole'. In subjective ratings, subjects replied more hot, more uncomfortable and more wet, they felt more fatigue in condition of 'without hole'. Work ability which was measured by a grip strength dynamometer was higher in 'with hole'. Safety hat which can be used for safety of the brain in work place is meaningful device of behavioral thermoregulatory response under the hot working environment. The safety hat which is designed for proper ventilation and hygiene can maintain the homeostasis of body temperature by releasing body temperature efficiently.

• Journal of the Korean Society of Food Culture
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• v.9 no.4
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• pp.379-394
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• 1994

The purpose of this study was to identify the correlation between the factors influencing on housewives' decision-making processes of organic foods and the relating variables, and the 5 stages of decision-making processes of the EBK model is utilized in this study. The sample was selected from 411 housewives living in Seoul from 1st of September through 20th of September, 1993. Frequency, Percentage, Mean, Factor analysis, One-way ANOVA, Duncan's multiple range test, t-Test, Correlation, Multiple regression analysis and Path analysis were measured. Major results are as follows: 1. Purchasing motivation of the organic foods were in order of the health care, nutritive value and taste care. 2. The major informations source for the knowledge of organic foods were in order of TV/radio, newspaper/magazine, recommendations informations and advice through a family/friends/acquaintances. 3. Evalution criteria in shopping of organic foods, the total degree of consideration over the purchasing factors of organic foods was fairly high level: consumers thought much of the sanitation/freshness, nutritive value and the food safety. In this regard opinion leaders was dominantly mass media. Consumers have a tendency to purchase organic foods in consideration of their children and husband. 4. Major place to purchase organic foods are super markets and department stores. And When shopping organic foods, housewives by all means confirm the check points in their own mind, which were expiry date, manufactured date and packing condition, but unexpectedly manufactured company was out of concern. 5. Housewives usually satisfy with decision after purchasing organic foods, while they were fairly unsatisfied with the price, quality, incomplete description for ingredients and manufactured date. 6. The variables influencing to the sincerity when selecting the most desired organic foods is how be cares about the natural freshness of the foods and the types of residents in order. Another interesting tendency is the richer they are very considerate to decide. It is to say the people who cares more about the natural freshness is the sincerer when making decision and also the class who lives in the apartment house enjoying high income do not easily accept the product quality.

• NEWSLETTER 전기공업
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• no.93-6 s.79
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• pp.1-25
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• 1993

• Journal of the Korean Geosynthetics Society
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• v.18 no.4
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• pp.193-204
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• 2019

Reliability analyses of sixteen domestic design cases of open cell caisson breakwaters against circular sliding failure were conducted in this study. For the reliability analyses, uncertainties of parameters of soils, mound, and concrete cap were assessed. Bishop simplified method was used to obtain load and resistance of open cell caisson breakwater for randomly generated open cell caisson breakwater. Sufficient number of Monte Carlo simulations were conducted for randomly generated open cell caisson breakwaters, and statistical analysis was conducted on loads and resistances collected from the large number of Monte Carlo simulations. Probability of failure produced from Monte Carlo simulation has a nonconvergence issue for very low probability of failure; therefore, First-Order Reliability Method (FORM) was conducted using the statistical characteristics of loads and resistances of open cell caisson breakwaters. In addition, effects of safety factor, uncertainties of load and resistance, and correlation between load and resistance on reliability of open cell caisson breakwaters against circular sliding failure were examined.

• Journal of Veterinary Clinics
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• v.29 no.4
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• pp.348-351
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• 2012

A vaginal speculum examination of a 17-month-old Holstein heifer with a history of repeated artificial insemination (AI) failures via the cranial vagina revealed the presence of an intact hymen (imperforate hymen) beyond the external urethral orifice, which resembled the vaginal wall. An ultrasonographic examination detected hypoechoic fluid within the vaginal cavity between the intact hymen and the cervix, indicating the presence of hydrocolpos. After sedation and epidural anesthesia, the intact hymen was incised using a scalpel and scissors and removed, while the incised portions were sutured using a simple interrupted method. The heifer became pregnant after three consecutive estruses with the intervals of approximately 20 days and concomitant AIs. The heifer gave birth to a healthy male calf with no complications after a 291-day gestation period. This case reports the presence of an imperforate hymen with hydrocolpos in a Holstein heifer, followed by successful insemination, conception and delivery after removal of the imperforate hymen.

• 산림경영
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• s.148
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• pp.54-55
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• 2001

산림청 임업연구원(원장 서승진)은 몬트리올의정서에서 오존층 파괴물질로 지정되어 2005년부터 세계적으로 사용이 금지되게 되는 훈증농약인 메틸브로마이드(Methyl Bromide : MB)를 대체할 수 있는 훈증활성물질 이소치오시아네트(Isothiocyanate)를 양고추냉이(겨자무)로부터 추출하는데 성공하였다. 메틸브로마이드는 세계적으로 토양소득, 검역, 시설물 훈증에 약 7만톤이 사용되는 유독성 물질로서 대체물질 개발을 위해 여러나라에서 연구 중에 있으며 우리나라도 OECD 가입국으로서 환경친화적 무공해 농약의 개발이 시급한 실정이었다. 이소치오시아네이트는 쌀, 옥수수, 콩 등 각종 곡물에 피해를 주는 쌀바구미, 팥바구미, 화랑곡나방, 권연벌레 등 저장곡물해충에 메틸보로마이드와 대등한 살충효과가 있는 무공해 천연물로서 메틸브로마이드를 대체할 수 있을 것으로 전망하고 있다. 앞으로 제형개발 등 상품화가 되면 수입에 의존하고 있는 저장곡물 방충농약을 대체할 수 있어 연간 300만 달러의 외화 절감은 물론 지구환경파괴를 막을 수 있는 획기적 계기를 마련하였다.

• Cement
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• s.127
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• pp.19-22
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• 1992