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American Chemical Society's weekly PressPac -- April 29, 2009
Date:5/3/2009

at when another droplet comes close the newcomer it is trapped by the trail of wastes released by the first droplet. Then the two move together in a "communicative" manner. When the fuel was exhausted, the droplets slowed down and stopped. The study serves as a long-awaited blueprint for designing similar locomotion systems in artificial cells, the scientists say. MTS

ARTICLE #3 FOR IMMEDIATE RELEASE
"Self-Propelled Oil Droplets Consuming "Fuel" Surfactant"

DOWNLOAD FULL TEXT ARTICLE: http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/ja806689p

Video footage of a self-propelled oil droplet in motion: ja806689p_si_001.mpg (5.61 MB)

CONTACT:
Tadashi Sugawara, Ph.D.
Department of Basic Science
The University of Tokyo
Tokyo, Japan
Email: suga@pentacle.c.u-tokyo.ac.jp


ARTICLE #4 FOR IMMEDIATE RELEASE

Mercury levels in Arctic seals may be linked to global warming
Environmental Science & Technology

Researchers in Canada are reporting for the first time that high mercury levels in certain Arctic seals appear to be linked to vanishing sea ice caused by global warming. Their study, a new insight into the impact of climate change on Arctic marine life, is scheduled for the May 1 issue of ACS' Environmental Science & Technology, a semi-monthly journal.

Gary Stern and colleagues note in the new study that Canadian Arctic ringed seals, like many Arctic marine animals, have relatively high levels of mercury. However, researchers have never determined how these levels are linked to sea ice extent and the resulting composition of arctic cod and other prey containing mercury available to ringed seals.


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Contact: Michael Woods
m_woods@acs.org
202-872-6293
American Chemical Society
Source:Eurekalert  

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