Sentences with phrase «oxidation processes at»

Not exact matches

Scientists at Oxford's Department of Earth Sciences, propose that the Martian surface reacted with the water and then absorbed it, increasing the rocks oxidation in the process, making the planet uninhabitable.

Researchers at the University of California, Riverside have discovered a method to dramatically improve the way pollutants are removed from wastewater using Advanced Oxidation Processes (AOPs).

The process of oxidation generates heat, but the process is kept at 80 degreeC by draining off excess heat.

Xue Feng, a professor at Tsinghua University, and his research team describe how mechanical stress can affect the oxidation process.

To fully examine intergranular oxidation rates, they noted that the transport processes along the grain boundary and reactions at the oxidation front had to be considered.

Fiona Sorrell graduated with a Masters degree in Chemistry from the University of Sheffield in 2008, spending a year in France at the Université Paul Sabatier Toulouse III studying the process of wine oxidation by electrochemistry as part of her degree program.

This chemical weathering process is too slow to damp out shorter - term fluctuations, and there are some complexities — glaciation can enhance the mechanical erosion that provides surface area for chemical weathering (some of which may be realized after a time delay — ie when the subsequent warming occurs — dramatically snow in a Snowball Earth scenario, where the frigid conditions essentially shut down all chemical weathering, allowing CO2 to build up to the point where it thaws the equatorial region, at which point runaway albedo feedback drives the Earth into a carbonic acid sauna, which ends via rapid carbonate rock formation), while lower sea level may increase the oxidation of organic C in sediments but also provide more land surface for erosion... etc..

As I discuss at length in my book «Misguided Medicine», unsaturated fats are chemically and physically structured in a way that free radicals can attack and bind to them via a process called oxidation.1 As we have to eat, it is nearly impossible to avoid all foods that can carry free radicals with them.

Stress resistance has not been assessed however and so the biological relevance of this finding is currently unknown.32 Several IER trials (75 - 85 % ER on restricted days) in overweight / obese populations have reported reductions in various markers of oxidative stress 37, 41, which in one study was accompanied by a complementary increase in the anti-oxidant uric acid.37 In a direct comparison of IER (75 % ER for two days / week) and CER, both ER strategies displayed equal efficacy in reducing levels of fast - acting advanced oxidation protein products (AOPP) after six months, which displayed a tendency to occur earlier (i.e. at three months) in the IER group.41 Levels of slow - acting (i.e. long term) AOPP tended to decrease in the IER group and increase in the CER group which the authors proposed may have resulted from IER - induced activation of autophagy, a key homeostatic cellular process in which dysfunctional or unnecessary cellular proteins are degraded and recycled.41 On the other hand, a follow - up study using similar IER / CER protocols demonstrated comparable reductions in AOPP in both groups after three months.48 Summary and Future Research Directions

So that beta - oxidation process can happen at multiple areas.

It must depend how the oxidation is being generated as well eg mitochondrial type energy processes, or chemical reaction like eicosanoid production, and where if at all do the two meet.

The oxygen content of the atmosphere is diminishing at a rate that corresponds to the increase in CO2, so the increase in CO2 is due to oxidation of carbonaceuos material of some kind, eg., burning, decay, etc., and not from, say, the oceans, volcanoes or some other geological process.

Conversely, specific oxidation processes can lead to depletion of GEM in the upper troposphere and lower stratosphere (36), and GEM concentrations in the boundary layer could be relevant information when measured far from large pollution sources (e.g., at Summit).

This oxidation process has also gone to completion on Venus and Mars, which are both highly oxidising at the surface — however, in both cases the lack of water to break down means no free oxygen; without a continuous source, even very slow geological processes will draw down all free oxygen.