우리나라 건강과 환경 관련 산업 분야에서 많이 활용되고 있는 황토는 삶의 질이 향상됨에 따라 그 수요가 급증할 것으로 예상된다. 그러나 황토에 대한 전문적인 지식이 관련 산업 분야에 축적되어 있지 않기 때문에 제대로 활용되고 있지 못하다. 황토는 점토광물과 산화-수산화 철-알루미늄 광물로 주로 구성되어 있지만, 그 종류와 양적인 비는 산출 지역에 따라 다르고, 심도에 따라서도 달라진다. 이에 따라 물리-화학적특성이 달라짐은 물론이다. 황토는 제대로 활용하기 위해서는 황토의 법정광물 지정과 매장량 조사, 광물학적 특성조사, 물리-화학적 특성조사와 같은 기본적인 연구를 철저히 한후, 이용 산업분야와 연계적인 연구를 통하여 활용을 극대화할 수 있을 것으로 생각된다.
The purpose of this study is to shed some light on how market orientation, mediators such as employee satisfaction, service quality and commitment, and business performance are related and to offer important managerial implication for managements or marketing practioners in the International logistics service industry.
Air-lift biofilm reactor should be an admirable process substituting conventional activated sludge process, because of its small area requirement as well as high volumetric loading capacity and stability against loading and chemical shocks. However most of the past research on the performance of ABR was focused on the sewage treatment. This research studied the applicability of ABR to treat high strength wastewater. A bench-scale ABR was operated to treat high strength synthetic wastewater, tannery wastewater and petrochemical wastewater, and its applicability was conclusive.
In case of synthetic wastewater, ABR showed good performance in which the substrate removal efficiency was higher than 80 % even under short HRT(1.4 hr) and high volumetric loading rate(9.3 ㎏CODcr/㎥ day). When ABR was applied to treat tannery wastewater, it was suggested that the maximum volumetric loading rate and F/M ratio should be 7.7 ㎏CODcr/㎥ day, 0.76 day-1, respectively. And high substrate removal efficiency over than 90 % was observed with 4,000 ㎎CODcr/L of petrochemical wastewater. Even though effluent concentration was quite high, ABR should be applicable to treat the high strength wastewater, because of its high loading capacity.
한동안 일본의 급성장 수출경제는 멈출 수 없는 것처럼 보였었다. 그러나 이제 지난 10년간 경제가 후퇴하면서 그 희생을 치르고 있다. 제조업 전 분야가 하락세를 면치 못하고 있거나, 기껏해야 현상 유지함으로서 결국 광물 소비량에 영향을 미치고 있다. 대규모 석회석 백운석 자원, 상당한 벤토나이트 및 납석 자원, 그리고 소다회, 융합광물(fused minerals) 등의 합성 원료를 제외하면, 일본에는 규모 있는 광물자원이 거의 없다. 광물자원의 부족과 최근의 엔고 현상 때문에 일본은 중국과 같은 나라의 주요 광물 수출 시장이 되고 있다.
This study is focused on the industrial symbiosis based on industrial ecosystem theory. At first, the concept of industrial ecosystem was introduced. Industrial symbiosis is a good tool in order to make a harmony between industry and natural ecosystem. The good example of industrial symbiosis is the case of Kalundborg in Denmark, where 11 networks are working in four enterprises and one community nearby. It was proved that savings of natural resources and economic benefit are achieved by use of industrial symbiosis. Moreover, the control of pollutant emission was also done by use of advanced technology and investments. Based on this case, It was shown that industrial symbiosis through eco-industrial complex in Korea was confronted with many difficulties. First of all, loose emmision criteria, recycling system on wastes, and the absence of will for industrial symbiosis should be solved in Korea.
중국에서 약용식물은 서양의학과 동등한 수준으로 인간의 건강증진과 유지 및 치료를 위해 매우 중요한 역할을 수행하고 있는데 본 논문에서는 중국에서 약용식물의 산업적 발달에 관해서 간략히 고찰하였다. 현계 중국에서 약용식물로 이용되고 있는 식물은 11, 118종에 달한다. 이들 약용식물이 가공되지 않고 천연산물로 이용되는 연간 총 생산액은 60억달러에 달하며 조제형태로 이용되는 총 생산액은 30억달러에 달한다. 지금까지 약용식물로부터 100여종 이상의 신약이 개발되었으며 천연자원에 의존하려는 세계적인 추세를 감안한다면 약용식물의 중요성은 더욱 증대할 것이며 산업적 개발이 인류의 건강을 유지하는데 결정적 역할을 할 것으로 기대된다.
Today the number of high school drop-outs is increasing , and also it is serious social problems. But almost factor analyses on the drop-outs are projected by questionnaire. This paper find out by the real data form the concerned documents what factors of drop-outs are. In order to accomplish this study purpose, the methodology are used such as Fequency Analysis, Correlation Analysis, Crosstabulation Analysis. Through the this study this paper could siome suggestions as followings. The first , all education authority should analysis what factors of drop-outs and what drop-out situation is . The second, every teacher should counsel with all problem students sincerely regarding to their characters, future occupations, life course and etc. The third, the most and worst important factors of drop-out is runaway. Because it is very difficult for teacher to teach, lead and guide a runaway student, therefore thepreventino of runaway is efficient for reducing of drop-outs. The fouth, the students violating rules are retrained propoerly in view of guide for good path. The fifth, besides of the above factors. there are drop-out factors such as the health, disease, dafety accidents . All parents. teachers, and students should try their best to solve. To the end, education authority try to encourage teachers to do their role with maximum sense of duty.