Tag: "sulfur" at biology news
Carnegie Mellon's Peter Adams receives EPA research grant
...nts collectively account for 67 percent of all the sulfur
dioxide emissions in the U.S., which is a major pr...50 coal-fired power plants averaged 21.1 pounds of sulfur
dioxide per megawatt-hour, compared to only one pound per megawatt hour for plants equipped with sta...
Invisible gases form most organic haze in urban, rural areas
...nclude VOCs, surface ozone, nitrogen compounds and sulfur
dioxide. All play a major role in the chemistry of the atmosphere and as such are heavily involved in interrelations between atmospheric chemistry and climate. VOCs are released by cars and trucks, gasoline evaporation that occurs during gas stat...
ACS News Service Weekly PressPac -- May 16, 2007
...llution control efforts are reducing the amount of sulfur
dioxide from coal, with increased OC emissions from motor vehicle exhaust. With less sulfur
dioxide (toxic to microorganisms) and more OC, microbes can grow in crusts on buildings and transfor...
From the deep -- Researchers find new species of sea anemone
... "A whole community of aquatic creatures uses that sulfur
to make energy, much like plants convert light into energy." Daly doesn't know much about A. pearseae beyond its physical description. She and Gusmo aren't sure how old the creatures are, and say that sea anemones can live for hundreds of years. No...
Use of wind energy in US growing, but planning and guidelines are lacking
...ficantly reduce emissions of two other pollutants, sulfur
dioxide and nitrogen oxides, because current and expected regulations of these are largely based on cap-and-trade programs. The degree to which emissions would be further reduced through special provisions to encourage wind-energy use -- such as se...
Scientists uncover link between ocean's chemical processes and microscopic floating plants
...ed. "In the atmosphere, DMS is rapidly oxidized to sulfur
dioxide, which can form sulfate aerosols in the atmosphere," said Wingenter. These aerosols can act as nuclei for cloud formation. Increased cloudiness could block sunlight, thereby cooling Earth. "Therefore, additional DMS production in a higher car...
David H. Baker to be honored for work in animal and nutritional science
...research interest involves the nutritional role of sulfur
compounds and the sulfur
amino acids methionine and cysteine. "Methionine is a critical amino acid in poultry diets, but I...
Academy honors 18 for major contributions to science
...innovative and insightful tracer experiments using sulfur
hexafluoride to understand vertical diffusivity and turbulent mixing in the open ocean." The medal was established by a gift of Sir John Murray and has been awarded since 1913. JOHN J. CARTY AWARD FOR THE ADVANCEMENT OF SCIENCE a medal and a pr...
Lead with a poisonous electron shield
...on binds to four ligands, three of which involve a sulfur
atom. When lead replaces zinc, it only binds to the three sulfur
atoms. The reason for this is the emerging free electron pair of the lead cation. It acts as an elec...
Chemical switch triggers critical cell activities
... between two biological molecules that form when a sulfur
atom on one of the molecules binds to an atom that is part of the other molecule. Understanding how the thioester bond switch works is important not only because it explains a critical step in the NEDD8 hand-off from E1 to E2, but also because enz...
Adenine 'tails' make tailored anchors for DNA
...A sensors (developed at NIST) is to use DNA with a sulfur
atom attached to one end, which acts as "glue" because sulfur
readily reacts with gold. But a potentially less expensive and even simpler approach, according to ...
Structure of iron regulatory protein-RNA complex solved
...s alternate form, IRP1 binds a cluster of iron and sulfur
atoms to act as an important metabolic enzyme called aconitase. The assembly and disassembly of the iron/sulfur cluster in the aconitase form appears to be an effective mechanism for regulating IRP1 activity. "We found that when IRP1 releases the i...
Drop in acid rain altering Appalachian stream water
...ince 1990. They are studying the effect of reduced sulfur
emissions required under the Clean Air Act on th...he streams is gradually improving from the reduced sulfur
emissions, and researchers are also seeing less nitrogen from the atmosphere and in the streams. "Th...
ORNL aids diesel parts manufacturers
...tudying how catalysts can be adversely affected by sulfur
and other gaseous exhaust components, Cummins and HTML worked together to characterize the fatigue life of cordierite diesel soot filters, which remove more than 98% of particulate emissions from diesel exhaust. These exhaust after-treatment devices...
Symposium 'Changes on Earth' honors Yale Geologist Robert Berner
... Widely known for his modeling of the carbon and sulfur
cycles, he has calculated the evolution of atmospheric CO2 and O2 over the past 500 million years, or the Phanerozoic era, the time of abundant paleontologic record in rocks on Earth. These studies have encompassed the effect of CO2 on climate and th...
Icelandic volcano caused historic famine in Egypt, says Rutgers-based team
...ic miles of lava and more than 100 million tons of sulfur
dioxide and toxic gases, killing vegetation, livestock and people. These eruptions were followed by a drought in a swath across northern Africa, producing a very low flow in the Nile. Laki's far-flung effects were chronicled by the French scholar C...
Scientists discover two-component lantibiotic with therapeutic potential
...ttributed to their structure. They possess unusual sulfur
bridged rings that provide structural rigidity for...ould modify many synthetic substrates, and produce sulfur
bridged rings of different sizes and shapes. This offered us the opportunity to control and alter th...
Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere
...etermine whether certain marine plankton convert a sulfur
compound to one that rises into the atmosphere, wh...e question of how these plankton are involved with sulfur
exchange between the ocean and atmosphere," said Mary Ann Moran, marine microbial ecologist at the U...
UGA scientists discover bacterial 'switch gene' that regulates oceans' sulfur emissions into the air
... whether certain marine bacterioplankton convert a sulfur
compound to one that rises into the atmosphere and...acterioplankton are involved with ocean-atmosphere sulfur
exchange," said Moran. The study was published today in the journal Science. Other authors of the...
Mass extinction's cause: 'Sick Earth'
...has measured large changes in the concentration of sulfur
isotopes that support the hydrogen sulfide theory....
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