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Saturation in Biological News

Emissions irrelevant to future climate change?

... although it may be some time before we reach this saturation point. The land and the oceans contain ... that we are heading inexorably towards the saturation peak, irrespective of how quickly we get there: Even weak but continuing emissions lead to eventual saturation of the climatecarbon cycle feedback, Mokhov and ...

AGU journal highlights -- March 25, 2009

... because carbon dioxide alters ocean chemistry and decreases aragonite saturation because it contributes to ocean acidification. As the aragonite saturation decreases, corals precipitate their skeletons (composed of calcium ...

Organic soils continue to acidify despite reduction in acidic deposition

... in 1984. The study showed that over the 17-yr interval, median base saturation in the Oa-horizon decreased from 56% in 1984 to 33% in 2001, while ... carbon concentration, showed no significant change. The change in base saturation was the result of almost equivalent changes in carbon-normalized ...

Soil's carbon storage capacity investigated

... study was conducted in a corn agroecosystem experiment to test the soil C saturation concept which postulates that there is an upper limit to the equilibrium ... potential show C saturation. Therefore, we need to consider soil C saturation levels to better predict the change in C sink capacity and fertility of ...

Penn research team tests bedside monitoring of brain blood flow and metabolism in stroke victims

... is a working prototype of a non-invasive brain probe that uses diffusing light to detect physiological changes such as blood flow, blood-oxygen saturation and hemoglobin concentration to inform clinicians about their treatments," Arjun Yodh, professor of physics in the School of Arts and Sciences at ...

Creation of a new material capable of eliminating pollutants by the hydrocarbon industry

... these pores must be the correct size and properly arranged. Thus, we achieve a high level of efficiency when eliminating and retrieving BTX after the saturation of the material, said David Fairn. Furthermore, the design of the adsorbent bed must allow a sufficient contact for the elimination of compounds and ...

Acid oceans warning

... base of the marine food web. They rely on sea water saturated with calcium carbonate to form their skeletons. However, as acidity intensifies, the saturation declines, making it harder for the animals to form their skeletal structures (calcify). Analysis of coral cores shows a steady drop in ...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

... network. The technology, known as fetal oxygen saturation monitoring, was designed for use along with ... Medical Center in Dallas. "Fetal oxygen saturation monitoring offered no apparent advantage in ... reason to warrant introducing fetal oxygen saturation monitoring into the delivery room. A previous ...

New success in engineering plant oils

... So the Brookhaven team set out to reduce KASII activity with the use of RNA-interference (RNAi) to see if they could further increase the level of saturation in plant seed oils. The Brookhaven scientists performed their experiments on Arabidopsis, a plant commonly used in research. Like other plants ...

Viagra improves high altitude exercise performance up to 45% for some

... per beat) and cardiac output (stroke volume times heart rate) compared to the placebo trial. Sildenafil also minimized the decline of arterial oxygen saturation of the arteries when the cyclists were at simulated altitude of 12,700 feet. But the researchers discovered that these improvements occurred ...

Insect predation sheds light on food web recovery after the dinosaur extinction

... mines show great abundance and taxonomic breadth," said Wilf. "There are fly, wasp and moth mines on the sycamores. We have not seen this kind of saturation of a flora with insect feeding anywhere else in North America, even in the Cretaceous before the extinction." What made this happen at Mexican ...

'Acid rain' and forest mass: Another perspective

... The total nitrogen deposition was greater that that deemed to be the admissible critical load in European forest ecosystems so that the nitrogen saturation of the ecosystems studied is, or shortly will be, a fact. The canopy of the forests was able to neutralise the atmospheric deposition in an effective ...
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