![[Space Math] 지구 궤도 떠도는 시한폭탄! 우주 쓰레기 처리 기업](http://dl.dongascience.com/uploads/article/thumbnail/202307/Screenshot_2023-06-28_19.03_.02_NUhk2C_.png)
다른 목적으로 쓰도록 자원을 재처리하는 기술이다. 독일의 ‘오르빗 리사이클링(Orbit Recycling)’은 발사 임무 종료 후 지금도 우주 궤도를 떠돌고 있는 로켓의 상단부를 달로 가지고 가서 150t 이상의 알루미늄을 재활용하는 계획을 세우고 있다. 환경과 지속가능성은 지구 위에서만 고민할 것이 ...
제품으로 재탄생시키는 활동을 말해요. 쓰레기를 갈거나 녹여서 원료로 만드는 ‘재활용(recycling)’을 넘어, 더 멋지고 가치 있는 물건으로 업그레이드(upgrade)한다는 의미에서 ‘업사이클링(upcycling)’이라고도 부른답니다. 김자연 플라스틱방앗간 프로젝트매니저는 “직접 조그만 플라스틱을 ...
place to live. The people live in harmony with nature.Most people in GreenVille try to protect environment through recycling and conservation.GoGreen Man lives in the green castle. He invites his good friend Hannah Heart over to take care of his flowers. But all is not well outside of GreenVille. Dr. Pollution is watching with jealous eyes. Dr. Pollution used to be a good scientist, but ...
뽑을 수 있다는 말이다.폐플라스틱의 재활용은 일반적으로 ‘물질 재활용’(material recycling)과 ‘에너지 재활용’(thermal recycling), 그리고 ‘화학 재활용’(chemical recycling)으로 구분한다.물질 재활용 기술은 폐플라스틱의 물성을 변화시키지 않고 이를 다른 플라스틱 제품의 원료로 만드는 기술로, 가장 ...
steel and brass can be recycled just from the Russian bomb and bullet casings alone. Some of the high expense of the recycling might be met by selling the materials saved.No one knows what will happen in Russia now, but it's to be hoped that they will continue to recycle their weapons, and that the United States will do the same.(C) 1993, Los Angeles Times Syndicate ...
as much water, in the form of hydroxyl, as a good percentage of the oceans, and seem to be an important part of the recycling of water through the top layers of Earth. Recent studies also indicate that the hydrogen in the hydroxyl may contribute to the mantle's electrical conductivity. Beneath the mantle is the planet's core under pressure ranging from 10,000 tons per square inch at the top ...
won't be conventional pistons and lubricants that they would damage. These refrigerators will also be cheaper to run.Recycling garbage should be worked on more, but with care—some chemical companies were recently indicted on charges that they schemed to dispose of toxic heavy metals by mixing them with fertilizer for sale.Exporting garbage is difficult, as in the case of the garbage scow ...
may be toxic, or carcinogenic, or in other ways very damaging.Well, then, what do we do? There are those who say that recycling plastics or making them biodegradable won't solve the problem. They insist that he only things we can do is use less plastic, maybe no plastic. But then, as I said at the start, plastics are so useful. I think we'll just have to continue looking for solutions ...
동아사이언스
디라이브러리
DS스토어
팝콘플래닛
