처마 끝에 열리는 고드름은 흔히 겨울철에 내린 눈이 지붕위에 쌓여 있다가 따사로운 햇살이 비치면 녹은 눈이 중력에 의해 흘러내리면서 영하의 찬 기류에 얼면서 성장하여 길게 매달린다. 그러나 땅바닥이나 물그릇 속에서 위로 자라 올라오는 역고드름은 특별히 그곳에서만 지상의 역 중력이 작용할 이유가 없기 때문에 간단히 해석되기가 쉽지 않다. 겨울밤에 정안수를 놋그릇에 떠놓고 공불기도를 올리다가 물이 어면서 나타나는 기이한 역 고드름은 물이 얼면서 생긴 표면의 숨구멍을 통하여 물보다 저밀도인 얼음의 체적이 불어서 밀려나오면서 생길 수 있으나, 이 현상만으로는 역고드름이 그렇게 크게 자랄 수가 얼다. 따라서 이 경우는 주변에서 불어오는 찬 기류가 지형지물에 부딪히면서 회오리쳐 소슬바람을 일으킬 때 일시적인 부압이 작용하여 그릇속의 물이 숨구멍을 통해 나오면서 얼어 성장되는 현상이 부가적으로 상승작용을 일으켜 길게 자라 올라온 것이다.

21 century as the knowledge base society which demands an originality and a variety the updated technology and knowledge creation ability quality and national power of life of the citizen were under controlling. Consequently, the extension of development and originality of the ability which is various leads and studying voluntary character and the ability back the education which it considers actively it raises and the infield it does. With activation plan of cave resources home page of Speleological Society of Korean like home page of Speleological Society of Japan cave crane information, caving information, cave Q/A, cave publication, the relation site back the possibility of seeing information regarding the cave which is various in order to be, it reorganizes. The possibility of coming in contact in order to be, various branch information also the general rain specialist regarding the cave resources. Currently the possibility of seeing the various branch data for the application of the cave resources at any time it is, home page of Speleological Society of Korean the possibility of doing to lead in order to be, it proposes the plan. From one person it will be able to study the data regarding the cave of various field in order, all curricular materials regarding the cave resources the educational program which leads a home page about under developing it proposes the activation plan of the cave resources.

The magnetic polishing is the useful method to finish using magnetic power of magnet. This method is one of precision polishing techniques and has an aim of the clean technology using for the pure of gas and inside of the clean pipe for transportation. The magnetic abrasive polishing method is not so common for machine that it is not spreaded widely. There are rarely researcher in this field because of non-effectiveness of magnetic abrasive. Therefore, in this paper deals with development of the magnetic abrasive using worthless mineral. In this development, abrasive grain WA and GC used to resin bond fabricated low temperature. And magnetic material was fabricated from the worthless mineral which were closed into 200 mesh grit type. The XRD analysis result show that only WA and GC abrasive and worthless mineral crystal peaks detected which explains resin bond was not any more chemical reaction. From SEM analysis it is found that WA and GC abrasive and worthless mineral were strong bonding with each other by bond.

We should understand the wetlands in the environment not only large famous but also very small wetlands. Wetlands have been understood the habitat of waterfowls and the treasure house of ecology. But All wetlands must be cognized how to be wetlands and be valuable as environment. There are many small and nonfamous wetlands in our country. They are not understood as wetlands. They are known as leaved estate, so thought as developed economically. Many leaved small nonfamous wetlands supply various good things. Most of all, they are water service and maintain of climate. These are served the source of sustenance of earth environment and ecology. They must get supported and maintained. Therefore The paradigm is shifted on the wetlands.

The Wooro cave speleothem displays comparatively very less developed characteristics due to its unactive fluviation, less soluable carbonate rocks, 3nd disconnected short voids. The Weoro cave consists of stalactite, stalagmite, flowstone, rimstone, and moonmilk, however, it is not exhibite soda straw, cave pearl, pisolites, curtain, drapery, cave flower, anthodite, cave coral, helictite. heligmite, boxwork, pendent and, cemented shield. The main cause of the underdevelopment speleothem of the Wooro cave probably less peneturated waters or less calcite compostion of the carbonate rocks.

소리의 파동, 특히 밀폐된 동굴 속에서 일어나는 음향파동에 대한 과학적 접근과 함께 첨단과학을 통한 소리의 분석기법을 통하여 소리과학과 동굴 및 그 구조에 따른 음파의 공명(증폭)현상과 인류생활의 소리문화의 상관성을 재조명하였다. 따라서 동굴 속에서 음악을 연주하는 경우 작은 소리라도 매우 웅장한 소리효과를 낼 수 있으며, 고음보다는 저음에서의 울림효과를 크게 가져 올 수 있다. 특히 이러한 파동현상과 음향효과를 통하여 기 발굴된 동굴의 체계적 관리 방안과 미 발굴 지하 동굴의 발굴에도 적용할 수 있을 것으로 기대되며, 동굴의 음향파동현상을 응용한 기술로 지각운동과 변화 및 동굴의 상태 분석과 변화 요인을 관찰하는데 효과적인 역할과 방법을 제공할 수 있을 것으로 기대된다.