Sentences with phrase «of oxygen production»

Using modern spatiotemporal records of oxygen production and oxygen isotopes in terrestrial precipitation, the authors demonstrate that their proposed relationship is robust over the modern seasonal cycle.

The past record was 320 millivolts, but the new catalysts only needed between 270 and 290 millivolts of overpotential to reach the same level of oxygen production.

The team presents new isotopic data showing that a burst of oxygen production by photosynthetic cyanobacteria temporarily increased oxygen concentrations in Earth's atmosphere.

Because they are some guy (or gal's) business, each tree that gets cut down for Christmas gets another one planted in its stead and the cycle of oxygen production continues.

Not exact matches

• EIV Capital has made a «significant» investment in EcoVapor Recovery Systems, a Denver, Colo. - based provider of vapor recovery and oxygen removal solutions at hydrocarbon production facilities.

Using software, the machine can calibrate production by letting in just the correct amounts of oxygen and light.

From blast furnaces, basic oxygen furnaces, electric arc furnaces, pickling and rolling operations, to galvanizing - coating, coke and sinter plants, copper and aluminum production facilities — we have worked with all types and sizes of operations.

This water is usually released, untreated, into nearby streams, where its acidity kills aquatic life and the breakdown of its organic material not only fosters the production of bacteria that are harmful to humans but also starves aquatic fauna of oxygen.

They also are rich in iron, which helps transport oxygen from the lungs to the rest of the body, and is integral for energy production and metabolism.

EPO boosts red blood cell production which enable athletes to carry much more oxygen with the same volume of blood.

The way Haisley puts it in the above passage assumes not only the benefit of hindsight (which, goddamn dude, take this into account the next time you lose enough oxygen to your brain to think writing about Arsenal is a good idea), but also that his level of production from 2011 - 2012 would continue well into his twilight years at Arsenal.

This formula is fortified with iron, which is crucial to your baby's development, especially in the production of more red blood cells to transport the oxygen through your baby's growing body.

Columbia University biologists have revealed a mechanism by which bacterial cells in crowded, oxygen - deprived environments access oxygen for energy production, ensuring survival of the cell.

Alas, using radio waves to tap hydrogen and oxygen as a combustible source of energy is inefficient, and scientists have so far been unable to adapt the process for energy production.

The technology can be applied to upstream production of gas as well as in petrochemical plants and for medical uses to harvest oxygen from other gases.

What differentiates this process from tradition biofuel production is the infusion of hydrogen — it removes the dilutive oxygen that most biofuels contain, leaving only the combustible isoparaffins and paraffins, which are indistinguishable from the molecules in refined petroleum.The only byproduct of the process is propane, which can be reintroduced into the production loop as a source of hydrogen.

This happens because the loss of blood flow in a vessel causes the local oxygen level to drop, which stimulates local production of vascular endothelial growth factor, or VEGF, a protein which in most tissues causes the growth of new blood vessels to repair damage.

When blood flow and oxygen levels are low, a transcription factor called hypoxia - inducible factor (HIF) triggers the production of a chemical called VEGF.

In the case of cisplatin - induced hearing loss, kenpaullone appears to protect hair cells by preventing CDK2 from stimulating the production of toxic reactive oxygen species from the cells» mitochondria.

An oxygen production demonstration is of particular interest to NASA's human exploration and science - led directorates.

At the hearing, Carpenter suggested that cell phones may increase the brain's production of reactive forms of oxygen called free radicals, which can interact with and damage DNA.

To see whether cancer stem cell renewal involves a chain of events similar to that used by embryonic stem cells, and whether the process was affected by oxygen levels, Semenza and graduate student Chuanzhao Zhang focused their studies on two human breast cancer cell lines that responded to low oxygen by ramping up production of the protein ALKBH5, which removes methyl groups from mRNAs.

Using mice in which the production of the enzyme was blocked, the researchers found that mice lacking FIH in their muscles require more oxygen than normal when exercising.

Because the kidney makes erythropoietin (EPO), a hormone that triggers the production of red blood cells, people whose kidneys degenerate can develop anaemia — not having enough red blood cells to carry oxygen around the body.

Because nitric oxide breaks down very quickly, as soon as the chemical is no longer being produced, the oxygen molecules are again trapped by the mitochondria and are not available for the production of light.

Such initiatives include research focused on more efficient production of gaseous hydrogen fuel by using solar energy to break water down into its components of hydrogen and oxygen.

The U of G researchers found that it is precisely under conditions of low oxygen that cancer cells trigger the production of cadherin - 22, putting in motion a kind of protein boost that helps bind cells together, enhancing cellular movement, invasion and likely metastasis.

To better understand the cycle of magma production, the researchers analyzed oxygen isotope ratios in quartz and zircon, water - and heat - resistant minerals, from volcanic rocks in the Yellowstone caldera.

One possibility, advanced by the Wisconsin team, is that restricting food consumption reduces the production of tissue - damaging oxygen free radicals that are a byproduct of food metabolism.

It has been theorized that the major cause of bleaching is the result of chloroplast damage due to heat stress, which results in the production of toxic, highly reactive oxygen molecules during photosynthesis.

Grossman explains: «One theory that we are exploring is that under heat - stress conditions the corals eject the algal symbionts at night in order to avoid the production and accumulation of photosynthetically - derived toxic oxygen molecules during the day.

In addition, the connection between iron levels and oxygen production found here will help researchers to reconstruct the long - term processes behind the evolution of animals — which need high levels of oxygen.

By applying millisecond laser light pulses to HCN channels tagged with a fluorescent photosensitizer, Zhou and colleagues were able to elicit the production of small amounts of singlet oxygen in a precise location and monitor its effects on the channels in open and closed states.

This lack of oxygen enables them to maintain their hydrogen - carbon bonds, a necessary ingredient for the production of oil and gas.

As the human population climbs, these cumulative changes will ultimately affect our economies and our well - being, because natural ecosystems perform — free of charge — many functions which we take for granted, such as purification of our wastes, production of harvestable resources, regulation of our climate, and restoration of the oxygen that we breathe.»

Says DePinto, «To the extent that the winter production of phytoplankton organic matter is still available for oxygen - demanding decomposition during the summer stratified period, it will contribute to Central Basin hypoxia.

«There is a growing body of data that points to oxygen production and accumulation in the ocean and atmosphere long before the GOE,» said Timothy W. Lyons, a professor of biogeochemistry in the Department of Earth Sciences and the lead author of the comprehensive synthesis of more than a decade's worth of study within and outside his research group.

«[T] he high seas provide a range of ecosystem services, from driving weather systems and modulating the climate to the production of a high percentage of the oxygen we breathe,» states a letter signed by hundreds of marine scientists, including conservation icon Sylvia Earle, in support of the Law of the Sea approach.

«We have developed a new type of protective coating that enables a key process in the solar - driven production of fuels to be performed with record efficiency, stability, and effectiveness, and in a system that is intrinsically safe and does not produce explosive mixtures of hydrogen and oxygen,» says Nate Lewis, the George L. Argyros Professor and professor of chemistry at Caltech and a coauthor of a new study, published the week of March 9 in the online issue of the journal the Proceedings of the National Academy of Sciences, that describes the film.

He added that using solar cells and abundantly available elements to split water into hydrogen and oxygen has enormous potential for reducing the cost of hydrogen production and that the approach could eventually replace the current method, which relies on fossil fuels.

Mitochondria help injured muscle cells (myofibers) repair by soaking up calcium that enters from the site of injury and using it to trigger increased production of reactive oxygen species.

Over the course of coming decades, though, trade wind speed is expected to decrease from global warming, Thunell says, and the result will be less phytoplankton production at the surface and less oxygen utilization at depth, causing a concomitant increase in the ocean's oxygen content.

It was important to make the calculations for a wide variety of cases, because the non-biological production of oxygen is subject to both the atmospheric and stellar environment of the planet.

When the scientists applied nitroglycerin patches, which cause increased blood flow to the skin, to nine normal mice breathing air with adequate oxygen, EPO and red blood cell levels shot up, confirming that diverting blood into the skin drives the production of EPO.

These elegant, microscopic creatures perform half of the photosynthesis and consequent oxygen production on Earth.

Likewise, the production and destruction of oxygen, ozone, and methane is driven by chemical reactions powered by light, making the type of star important to consider as well.

Because life dominates the production of oxygen, and oxygen is needed for ozone, both gases were thought to be relatively strong biosignatures.

«More specifically, different colors (or wavelengths) of ultraviolet light can affect oxygen and ozone production and destruction in different ways.»

They compared the production, combustion and gas emissions of biochar, which is produced by slow heating of the biomass at a temperature of 450 °C (842 °F) in an oxygen - free furnace with hydrochar.

Blood describes a diverse group of cells that includes those that carry oxygen, heal wounds, and fight off infection, and the production of clinical grade blood has remained a major goal of reprogramming science.