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2018-12-10 05:50發(fā)布了問答
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通常用溶液凝膠法制備的粉體材料有哪些?每種材料有哪些應(yīng)用
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2018-11-16 05:39發(fā)布了問答
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礦物硬度的附:常見礦物的硬度
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2017-03-13 23:29發(fā)布了問答
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海信65mu8600uc是不是第三代量子點(diǎn)
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2016-12-01 04:05發(fā)布了問答
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瓷器的密度是多少?(不是要計(jì)算的物理題)
- 告訴我吧,一般的瓷器密度是多少?我只想知道這個(gè)。
Z好2個(gè)格式都寫上 g/cm3 kg/m3
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2015-08-01 11:26發(fā)布了問答
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納米材料與高分子合成材料有哪些方面的區(qū)別?
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2015-05-26 03:42發(fā)布了問答
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什么是納米?定義是什么?
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2015-04-20 15:11發(fā)布了問答
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長虹65q2c是量子點(diǎn)電視機(jī)嗎
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2014-10-21 03:07發(fā)布了問答
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精油 能產(chǎn)生負(fù)離子嗎
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2011-05-09 09:44發(fā)布了問答
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吐溫溶解植物精油
- 吐溫溶解植物精油
(1)哪種吐溫較能溶解植物(精)油?1體積能溶解多少體積植物(精)油?
(2)植物油混入吐溫后,加入水中得乳化液,哪種吐溫的乳化液較澄清透明?
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2010-12-28 03:34發(fā)布了問答
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金屬材料和無機(jī)非金屬哪個(gè)相對好就業(yè)點(diǎn)
- 我是鄭州大學(xué)大1,大2就分專業(yè)了,還有高分子
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2009-05-20 23:18發(fā)布了問答
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納米盤分散的的壓縮包要怎么合到一起?
- 每個(gè)里面都有一個(gè)同名的文件夾 解壓出diyi個(gè) 就顯示了和25個(gè)壓縮文件加起來一樣的大小 剩下的要怎么辦? 里面的東西好像都是重復(fù)的 要不要依次解壓? 完成后這些分卷能不能刪?
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2009-04-15 21:30發(fā)布了問答
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紫外線消毒為什么波長在254納米效果Z好?
- 是不是這個(gè)波長對微生物傷害Z大?高手給點(diǎn)殺菌機(jī)理方面的
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2008-05-26 18:40發(fā)布了問答
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如何判斷屬于膠體還是溶液
- 例如澄清石灰水, 氫氧化鋁膠體 蛋白質(zhì)溶液 碘的四氯化碳溶液.油水混合物.只不過是個(gè)例子,我要的是方法,如何判斷出來類似的題.
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2007-05-22 05:30發(fā)布了問答
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納米技術(shù)現(xiàn)在存在的問題是什么?
- 納米技術(shù)有哪些優(yōu)點(diǎn)缺點(diǎn)呢?
納米技術(shù)Z多應(yīng)用在什么方面?
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2007-04-15 19:28發(fā)布了問答
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什么是表面納米技術(shù)
- 詳細(xì)了解表面納米技術(shù)
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2006-10-18 01:02發(fā)布了問答
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納米材料的摘要翻譯(7)
- Drivers and Directions In the United States, the EPA and NIOSH are spearheading research into nanoparticles and their associated health risks through a variety of funded research projects and information exchange programs. NIOSH’s Web si... Drivers and Directions
In the United States, the EPA and NIOSH are spearheading research
into nanoparticles and their associated health risks through a variety of funded research projects and information exchange programs. NIOSH’s Web site also cites its participation in the multiagency National Nanotechnology Initiative and the Nanoscale
Science, Engineering and Technology Subcommittee of the National Science and Technology Council’s Committee on Technology.
But on the whole, the study of nanotechnology in the workplace is still in its infancy. Or as Keith Rickabaugh, technical director of materials and analytical services for RJ Lee Group, Monroeville, Pa., puts it, “what has been learned is that there is much more to learn.” Rickabaugh goes on to say that, “We need to learn how to economically/reasonably establish safe work practices and engineering controls to protect workers from an ‘unknown’ exposure risk. That includes performing studies to document the health risks of nanosized particles, and training workers to understand and be able to characterize those materials.” 展開