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American Chemical Society's weekly PressPac -- May 6, 2009
Date:5/10/2009

t methyl halides instead of alcohol. In laboratory studies, the two engineered microbes helped boost methyl halide production from switchgrass, corn cob husks, sugar cane waste, and poplar wood to levels with commercial potential. MTS

ARTICLE #1 FOR IMMEDIATE RELEASE
"Synthesis of Methyl Halides from Biomass Using Engineered Microbes"

DOWNLOAD FULL TEXT ARTICLE: http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/ja809461u

CONTACT:
Christopher A. Voigt, Ph.D.
Department of Pharmaceutical Chemistry
Chemistry and Chemical Biology Program
University of California
San Francisco, Calif. 94158-2330
Phone: 415-502-7050
Email: cavoigt@picasso.ucsf.edu


ARTICLE #2 FOR IMMEDIATE RELEASE

Working on the railroad? Using concrete could help environment
Environmental Science & Technology

Wood or concrete? Railroads around the world face that decision as they replace millions of deteriorating cross ties, also known as railway sleepers, those rectangular objects used as a base for railroad tracks. A new report concludes that emissions of carbon dioxide one of the main greenhouse gases contributing to global warming from production of concrete sleepers are up to six times less than emissions associated with timber sleepers. The study is scheduled for the June 1 issue of ACS' Environmental Science & Technology, a semi-monthly journal.

In the study, Robert Crawford points out that there have been long-standing concerns about environmental consequences of manufacturing railway sleepers because it involves harvesting large amounts of timber. Reinforced concrete sleepers are an alternative that offer greater strength, durability and long-term cost savings, he said. Critics of using concrete sleepers have charge
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Contact: Michael Woods
m_woods@acs.org
202-872-6293
American Chemical Society
Source:Eurekalert  

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