Skip to content. Skip to navigation
Sections
Personal tools
You are here: Home Alchemist The Alchemist Newsletter: November 11, 2009
Document Actions

The Alchemist Newsletter: November 11, 2009

by chemweb last modified 11-25-09 01:27 AM
The Alchemist - November 11, 2009
The Alchemist Newsletter Logo
spacer
Not a subscriber? Join now.

November 11, 2009
 

headliner

arrow
issue overview
arrow
biochem: Shelled yeast
arrow
geochem: Ancient oceanic oxygen
arrow
physical: Fine-tuning protein potential
arrow
computational: Computing interactivity
arrow
materials: Plastic fillings
arrow
grants: Gen F scientists

 

 

headliner

First to fall under The Alchemist's gaze this week is Korean work into coating yeast particles with a protective silica shell to stabilize the organism for new lines of research. Geochemistry billions of years old reveals a sulfidic past and answers questions about how the Earth got its oxygen-rich atmosphere. In biophysical chemistry, US scientists have found a way to extend the redox range of copper-containing proteins and in computational chemistry Dutch scientists explain precisely how hydrogen interacts with copper surfaces. Good news for those fearful of mercury dental fillings, as a new composite material emerges from polymer and nanochemistry research. Finally, a cash injection from US recovery funds could see the establishment of yet another "Facebook for scientists", only this time it's aimed squarely at American institutions.

arrowback to top

 

headliner

Shelled yeast

Researchers in Korea have found a way to give yeast particles a hard shell composed of silicon dioxide. By coating Saccharomyces cerevisiae with a protective, synthetic shell, Insung Choi and colleagues can triple the life of the yeast and also block replication. Previous researchers have coated yeast with a phosphate layer, but the current biomimetic approach could open up new avenues of research for this favorite organism of molecular biology.

arrowYeast in a shell

arrowback to top

 

headliner

Ancient oceanic oxygen

New research from geoscientists at the University of California, Riverside, corroborates recent evidence about the Great Oxidation Event. It has thus helped solve some outstanding questions surrounding the theory that the Earth's atmosphere underwent a dramatic rise in oxygen 2.4 billion years ago. An analysis of 2.5 billion-year-old black shales from Western Australia add to the evidence that oxygen production began in the Earth's oceans at least 100 million years before the GOE. The findings, which bring to light sulfidic conditions, could also have implications for understanding other geologic periods.

arrowA New Wrinkle in Ancient Ocean Chemistry

arrowback to top

 

headliner

Fine-tuning protein potential

Tailor-made proteins for applications such as artificial photosynthetic centers, long-range electron transfers, and fuel-cell catalysts for energy conversion might be possible thanks to advances in natural redox processes. Yi Lu of the University of Illinois and colleagues have shown that hydrophobic interactions and hydrogen bonding can be exploited to fine-tune the redox potential of copper-containing cupredoxin proteins. "We have now extended the range both above and below what had previously been found in nature," Lu says.

arrowMimicking Nature, Scientists Can Now Extend Redox Potentials

arrowback to top

 

headliner

Computing interactivity

An international team led by chemists at Leiden University in The Netherlands have demonstrated that computers can now be used to make accurate predictions of the reactions of hydrogen molecules with surfaces. The team has developed a new method for modeling what happens when hydrogen molecules separate on a copper surface. The researchers suggest that the way is now open for calculating the interaction between more complex molecules and surfaces. Understanding the interaction of hydrogen with a metal surface is an important aspect of developing hydrogen storage materials for future "clean" power devices, such as fuel cells.

arrowComputer predicts reactions between molecules and surfaces, with 'chemical precision'

arrowback to top

 

headliner

Plastic fillings

Current dental fillings to replace damaged tooth enamel are based mainly on nineteenth century technology of mercury amalgams. The familiar silvery-black fillings that so many people have could soon be a thing of the past, thanks to the development of a tough material for twenty-first century dentistry. Kent Coulter and his colleagues at Southwest Research Institute in San Antonio have developed a new proof-of-concept dental restorative material based on zirconia nanoplatelets trapped in a polymer matrix. The material is produced in rolls, which could be cut to fit, packed into a cavity and then cured with ultraviolet light to form hard, long-lasting, and light-colored filling.

arrowLook Ma, No Mercury in Fillings!

arrowback to top

 

headliner

Gen F scientists

A cash injection of $12.2 million from the American Recovery and Reinvestment Act of 2009 could help The University of Florida, Cornell University and a handful of other schools build a social media site for scientists. "The goal of the program is national networking of all scientists," explains Michael Conlon, interim director of biomedical informatics for the University of Florida. Initially, the network will hook together seven institutions but could later be rolled out across the USA. Critics have pointed out that science is an international effort and that such a parochial system could unnecessarily exclude scientific talent and creativity from across the globe.

arrowFacebook for scientists gets millions in funding

arrowback to top

 
SPONSORED BY

Molecular Informatics - Where Design Meets Experiment

The new journal for interdisciplinary research on all molecular aspects of bio/cheminformatics and computer-assisted molecular design. Editors: Knut Baumann (Braunschweig, Germany), Gerhard Ecker (Vienna, Austria), Jordi Mestres (Barcelona, Spain), Gisbert Schneider (Frankfurt, Germany)

Submit your excellent paper now


Informex 2010

Informex brings together serious buyers and sellers of chemicals, biologics, chemical technologies and related services. It is the global meeting place to efficiently showcase as well as learn about the capabilities of high-value, high-quality, specialty and custom chemical manufacturers, from pilot to commercial scale.

Register today!


Enter to win
a new 32inch HDTV

The voice of the chemical community can now be heard on VendorRate! Share your experience working with IT and Telecom vendors with the rest of the chemical industry!

·See satisfaction scores for technology vendors
·Reduce risk before your next technology purchase
·Leverage contract negotiations using the collective voice of chemical industry
·Compare vendors before you buy
·Share your opinion with full confidentiality

Rate Now to enter to win a new 32inch HDTV!


FREE Magazines

Trade Publications FREE to Qualified subscribers of "The Alchemist" and Chemweb.com. No hidden or trial offers, and no purchase necessary. Publications are absolutely free to those who qualify.

Sign-up here


Free Newsletters

ChemIndustry.com's Newsletter Center invites you to subscribe to newsletters of your interest - free of charge.

Click here for details


Previous Issues

Oct 28, 2009
Oct 14, 2009
Sep 21, 2009
Sep 9, 2009
Aug 26, 2009
Aug 11, 2009
Jul 29, 2009
Jul 14, 2009
Jun 24, 2009
Jun 10, 2009
May 27, 2009
May 12, 2009
Apr 28, 2009
Apr 15, 2009
Mar 25, 2009
Mar 10, 2009
Feb 24, 2009
Feb 11, 2009
Jan 27, 2009
Jan 13, 2009
Dec 24, 2008
Dec 10, 2008
Nov 25, 2008
Nov 13, 2008
Oct 28, 2008
Oct 14, 2008
Sep 25, 2008
Sep 10, 2008
Aug 26, 2008
Aug 12, 2008
Jul 23, 2008
Jul 09, 2008
Jun 24, 2008
Jun 11, 2008
May 28, 2008
May 14, 2008
Apr 24, 2008
Apr 9, 2008
Mar 25, 2008
Mar 12, 2008
Feb 27, 2008
Feb 13, 2008
Jan 22, 2008
Jan 08, 2008
Dec 12, 2007
Nov 27, 2007
Nov 14, 2007
Oct 24, 2007
Oct 10, 2007
Sep 26, 2007
Sep 11, 2007
Aug 30, 2007
Aug 15, 2007
Jul 25, 2007
Jul 11, 2007
Jun 27, 2007
Jun 13, 2007
May 24, 2007
May 8, 2007
Apr 23, 2007
Apr 10, 2007
Mar 27, 2007
Mar 13, 2007
Feb 27, 2007
Feb 13, 2007
Jan 23, 2007
Jan 9, 2007
Dec 12, 2006
Nov 28, 2006
Nov 14, 2006
Oct 24, 2006
Oct 10, 2006
Sep 26, 2006
Sep 12, 2006
Aug 22, 2006
Aug 9, 2006
Jul 25, 2006
Jul 11, 2006
Jun 27, 2006
Jun 13, 2006
May 23, 2006
May 9, 2006
Apr 25, 2006
Apr 11, 2006
Mar 14, 2006
Feb 28, 2006
Feb 14, 2006
Jan 24, 2006
Jan 10, 2006
Dec 20, 2005
Dec 6, 2005
Nov 15, 2005
Nov 1, 2005
Oct 18, 2005
Oct 4, 2005
Sep 20, 2005
Sep 6, 2005
Aug 18, 2005
Aug 2, 2005
July 19, 2005
July 08, 2005
June 21, 2005
June 7, 2005
May 17, 2005
May 3, 2005
Apr 18, 2005
Apr 8, 2005
Mar 22, 2005
Mar 8, 2005
Feb 22, 2005
Feb 8, 2005
Jan 25, 2005
Jan 11, 2004
Dec 28, 2004
Dec 14, 2004
Nov 30, 2004
Nov 11, 2004
Oct 29, 2004
Oct 13, 2004
Sep 28, 2004
Sep 13, 2004
Aug 19, 2004

 
   

The Alchemist is published under the copyright of ChemIndustry.com Inc. ©2009. For additional information including contact information and sponsorship opportunities, please contact Rick Whiteman <Rick@ChemWeb.com> or visit our web sites at www.chemweb.com and www.chemindustry.com.

For assistance with your ChemWeb.com account or general support, please visit http://www.chemweb.com/contact-info.

Sponsors
Web Search
 

Powered by Plone CMS, the Open Source Content Management System

This site conforms to the following standards: