dioxide

Measurement of Green Fluorescent Protein in the SpectraMax Gemini XS Spectrofluorometer (MaxLine Application Note #44)

... and Salmonella on chill-stored vacuum or carbon dioxide packaged primal beef cuts. Int. J. Food Microbiol. , 64(3) : 401405. 8. Slebos R.J. & Taylor, J.A. (2001). A novel host cell reactivation assay to assess homologous recombination capacity in human cancer cell lines. Biochem. Biophys. Res. C...

Scaling-Up from Spinners, T-Flasks & Shakers: A versatile bioreactor for mammalian and microbial cells

...trol is through addition ofgasses. Sparging carbon dioxide (CO 2 ) into the liquid solution lowers the overall pH, while sparging nitrogen (N 2 ) neutralizes theeffect of CO 2 to raise pH. However, the amount of gas that can be physically dissolved into the medium is governed by HenrysLaw. The level of diss...

FERMENTATION BASICS

...ous substrate for microbialmetabolism, and carbon dioxide is the most important gaseous metabolic product. When oxygen is required as a microbial substrate, it is frequently a limiting factor infermentation. Because of its low solubility, only 0.3 mM O 2 , equivalent to 9 mg/l,dissolves in one liter ...

The 10 biggest events shaping biotech in 2006

...ivalent of 90 to 150 million metric tons of carbon dioxide annually. Another study by the University of Tenn...in Ten goal, or stopping the growth of U.S. carbon dioxide emissions within the next 10 years by requiring the production of 35 billion gallons of renewable an...

It's not exactly OPEC, but Midwest states are trading ideas on biofuels

...h on the potential of farmland to sequester carbon dioxide while providing benefits to producers. He also ser...he potential to offset 30 percent of annual carbon dioxide emissions worldwide, he said. Jordan took on the notion that greater biofuels production will dimin...

The science is clear: Ethanol yields a net increase in energy

... greenhouse gas emissions (Biofuels recycle carbon dioxide that was extracted from the atmosphere in producing biomass), and support for agriculture. None of that means ethanol is without its drawbacks, especially when its produced from corn. The UC-Berkeley study concluded ethanol was no worse than gasoli...

UW prof turns sugar into diesel fuel, chemicals

...els, we are trying to take advantage of the carbon dioxide and modern solar energy that crop plants pick up."...try - can also cut global warming caused by carbon dioxide emissions from fossil fuels, according to graduate student Yuriy Roman-Leshkov, first author on the ...

Biotech leads list of top U.S. companies to work for

...to Sweden and Japan). Ethanol releases less carbon dioxide than gasoline. The Brazil ethanol model is being looked at by China, India, and the U.S. In the U.S., the most recent energy bill signed into law last August stipulates that the use of ethanol must double by 2012. But U.S. ethanol is made from corn ...

Reducing brightness to make a better paper

... in bleaching, such as hydrogen peroxide, chlorine dioxide and alkali. Water-treatment costs would be reduced as well. Pulp yield could be increased as much as 1 percent, resulting in an annual savings of some 500,000 tons of green wood. Preliminary studies indicate that bleaching to only 80 or so brightnes...

UW students compete to make hydrogen cars, other renewable projects

...opment means that the car has absolutely no carbon dioxide emissions removing the need for an engine or a tailpipe. It operates on a sugar-derived hydrogen fuel developed by Virent Energy Systems . The wind generator and solar panel can be set up when the car is parked, giving it the capability to recharge...

Tech Digest (11/15/2004)

...VAC systems. The systems use transcritical carbon dioxide technology for cooling equipment employed by the military in extreme heat. Since carbon dioxide is naturally occurring, it releases no harmful gases if it leaks and has a higher safety rating than...

UW engineers clear bottleneck in hydrogen production

...lled water-gas shift, produces hydrogen and carbon dioxide (CO2). Additional steps then are taken to reduce the CO levels further before the hydrogen enters a fuel cell. James Dumesic, professor of chemical and biological engineering, postdoctoral researcher Won Bae Kim, and graduate students Tobias Voitl ...

Modine showcases CO2 cooled Jeep

...p the same amount of space under the hood. Carbon dioxide is a natural refrigerant, as it exists naturally in the environment. And, although carbon dioxide is a known greenhouse gas, its use as a refrigerant in automotive air conditioning systems poses no ...

Exclusive WTN Interview with Don Williamson

... are turned into harmless water, oxygen and carbon dioxide by other bacteria. WTN: What is the biggest challenge right now? DW: Aside from raising money, explaining to people where we fit (are you lifesciences or biotech?), building a team and finding more customers? WTN: Lets start with where you ...