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a functional group which is sensitive and selective for capturing arsenic. When even a trace amount of arsenic is present in water, these nanomaterial captors can quickly adsorbed and removed arsenic. As a distinctive feature, the detection/removal of arsenic can easily be confirmed because the color of the nanomaterial captors changes in the adsorption stage with the same frequency of human eyes, showing the user that the removal has occur.
http://www.nims.go.jp/nimsconf/2012/index.html http://samurai.nims.go.jp/Sherif_ELSAFTY-e.html
A study found that lung cells were not affected by short fibres that were less than five-thousandths of a millimetre long. However, longer fibres can reach the lung cavity, where they become stuck and cause disease. Ken Donaldson, Professor of Respiratory Toxicology: "We knew that long fibres, compared with shorter fibres, could cause tumours but until now we did not know the cut-off length at which this happened. Knowing the length beyond which the tiny fibres can cause disease is important in ensuring that safe fibres are made in the future as well as helping to understand the current risk from asbestos and other fibres."
Anja Schinwald, Fiona A. Murphy, Adriele Prina-Mello, Craig A. Poland , Fiona Byrne, Dania Movia, James R. Glass, Janet C. Dickerson, David A. Schultz, Chris E. Jeffree, WilliamMacNeeand Ken Donaldson: The Threshold Length for Fiber-Induced Acute Pleural Inflammation: Shedding Light on the Early Events in Asbestos-Induced Mesothelioma, In: Toxicological Sciences, Volume 128, Issue 2, August 02, 2012, Pages 461-470, DOI:10.1093/ toxsci/kfs171: http://toxsci.oxfordjournals.org/content/128/2/461.abstract
Harvard scientists have created a type of "cyborg" tissue for the first time by embedding a three- dimensional network of functional, biocompatible, nanoscale wires into engineered human tissues. "The current methods we have for monitoring or interacting with living systems are limited," said Lieber. "We can use electrodes to measure activity in cells or tissue, but that damages them. With this technology, for the first time, we can work at the same scale as the unit of biological system without interrupting it. Ultimately, this is about merging tissue with electronics in a way that it becomes difficult to determine where the tissue ends and the electronics begin."
Bozhi Tian, Jia Liu, Tal Dvir, Lihua Jin, Jonathan H. Tsui, Quan Qing, Zhigang Suo, Robert Langer, Daniel S. Kohane & Charles M. Lieber: Macroporous nanowire nanoelectronic scaffolds for synthetic tissues, In: Nature Materials AOP, August 26, 2012, DOI:10.1038/ nmat3404: