Archive for May 18th, 2007|Daily archive page

in vitro meat

In Uncategorized on May 18, 2007 at 11:55 pm

another of my columns

Human 2.0

In Uncategorized on May 18, 2007 at 11:53 pm

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a variety of links related to the Neurotechnology Industry Organization

In Uncategorized on May 18, 2007 at 11:52 pm

The Neurotechnology Industry 2007 Report

DARPA unveils plans for “Luke’s Binoculars” (Connors)

In Uncategorized on May 18, 2007 at 11:44 pm

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WHO Unveils Life Expectancy Statistics

In Health on May 18, 2007 at 11:34 pm

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Nanotechnology timelines and mapviews in Google Experimental

In nano on May 18, 2007 at 11:30 pm

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Environmentally Beneficial Nanotechnologies Barriers and Opportunities

In nano on May 18, 2007 at 11:27 pm

A report for the Department for Environment, Food and Rural Affairs
May 2007 Report here

Nubot: DNA nanotechnology robots

In nano on May 18, 2007 at 11:21 pm

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Nanoethics bank

In nano on May 18, 2007 at 11:17 pm

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Natural Resources Defense Council Nanotechnology’s Invisible Threat Small Science, Big Consequences

In nano on May 18, 2007 at 11:16 pm

report here

Mapping The U.S. NanoMetro Economy

In nano on May 18, 2007 at 11:13 pm

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Zeptoliter pipette delivers nanodroplets

In nano on May 18, 2007 at 11:10 pm

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Sorting Nanotube Isomers

In nano on May 18, 2007 at 11:09 pm

Optical isomers of single-walled carbon nanotubes (SWNTs) now can be sorted from one another for the first time, thanks to a pair of chiral diporphyrin “tweezers” developed by researchers in Japan (Nat. Nanotechnol., DOI: 10.1038/nnano.2007.142). Commercially available SWNTs usually are a jumble of nanotubes of various lengths and diameters, and this lack of uniformity can make product development difficult. Nanotubes also possess a helical twist-either right- or left-handed-that gives them optical activity. Using one or the other of the chiral diporphyrin molecules, a group led by Xiaobin Peng and Naoki Komatsu of Shiga University of Medical Science was able to separate the optical isomers. The sorting process takes advantage of the diporphyrins’ affinity to bind more tightly to one of the two helices (one diporphyrin shown). The researchers suspended the SWNTs and a chiral diporphyrin in methanol, followed by sonication and centrifugation. The resulting supernatant liquid is enriched with the preferred diporphyrin-SWNT complex. The diporphyrin is easily washed away, leaving behind the SWNT isomer.

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