Sentences with phrase «of oxygen release»

«In these periods, we often find no indicators of oxygen release,» says Elizabeth Swanner, the study's lead author.

The process of metabolizing food in the presence of oxygen releases much more energy than most anaerobic pathways.

Thawing permafrost also delivers organic - rich soils to lake bottoms, where decomposition in the absence of oxygen releases additional methane.116 Extensive wildfires also release carbon that contributes to climate warming.107, 117,118 The capacity of the Yukon River Basin in Alaska and adjacent Canada to store carbon has been substantially weakened since the 1960s by the combination of warming and thawing of permafrost and by increased wildfire.119 Expansion of tall shrubs and trees into tundra makes the surface darker and rougher, increasing absorption of the sun's energy and further contributing to warming.120 This warming is likely stronger than the potential cooling effects of increased carbon dioxide uptake associated with tree and shrub expansion.121 The shorter snow - covered seasons in Alaska further increase energy absorption by the land surface, an effect only slightly offset by the reduced energy absorption of highly reflective post-fire snow - covered landscapes.121 This spectrum of changes in Alaskan and other high - latitude terrestrial ecosystems jeopardizes efforts by society to use ecosystem carbon management to offset fossil fuel emissions.94, 95,96

Not exact matches

Because as you drink your wine, the ridges on the side of the aerating wine glass absorbs oxygen and releases carbon dioxide.

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.

and get blocked off from oxygen, which results in a slow break down process (anaerobic decomposition) and the release of methane, a greenhouse gas.

To help release the mommy guilt think of the airplane emergency oxygen mask.

Although at this time, lung surfactants, which aid in lung expansion after the birth of the baby, is already present, the lungs are still very immature to function properly like sending out oxygen to the bloodstream during inhalation and releasing carbon dioxide during exhalation.

In addition, the placenta acts like a «lung» for the baby, allowing for the transfer of oxygen and for any waste products to be released into the mother's circulation and to be disposed of in the mother's urine.

It can help restore blood pressure through the release of certain hormones, mostly oxytocin, so your fetus will receive the correct amount of oxygen and nutrients that he needs for his growth and development.

Also, the act of receiving a massage also releases endorphins into mother's body and increases blood flow throughout the body which in turn provides more nutrients and oxygen to both mother and baby.

Other studies claim an abnormality in the brains of children that prevent oxygen release is to blame.

There, the charged particles strike molecules in Earth's atmosphere that release photons of various colors (red hues come from oxygen, for example) and light up polar regions in frequent auroral displays.

These include the development of a biochemical sensor that can continuously and accurately measure different substances released by the organ - like system, as well as enhancements that allow the use of multiple physical sensors, which monitor features such as temperature, oxygen levels, and pH values.

Visible from North Carolina to upstate New York, the eerie trails were created by five suborbital NASA rockets that soared to altitudes of 50 to 80 miles, where they released chemical tracers that reacted with oxygen in the thin upper atmosphere.

As for the increase in phosphorus content, it was caused by the phosphorus that in the summer of 2014 flowed in from the deep waters in the north of the Baltic Sea main basin and the phosphorus that was released from the Gulf of Finland's own seabed in the poor oxygen conditions and mixed with the surface layer during last winter.

A low - voltage current applied to the electrodes drives a catalytic reaction that separates molecules of H2O, releasing bubbles of hydrogen on one electrode and oxygen on the other.

When the quantum dots absorb ambient light, they transfer some of that energy to nearby dye particles, causing the crystal violet to release a kind of high - energy oxygen molecule that kills microbes.

It shows that the blockage of one vessel causes a local loss of oxygen in the retina, which triggers release of VEGF that spreads over a larger region, which, in turn increases the probability of blockage in the surrounding vessels, creating a «domino effect.»

The interactions among those amino acids dictate the structure of a protein, which in turn determines its properties — how readily it binds with and releases oxygen, for instance.

The researchers found the chironomids burrowed into the sediment, moving water and oxygen into the sediment and increased the levels of nutrients released into the sediment porewater and water column.

Regulations on the amount of nitrate that may be released vary by state, but excess nitrate contributes to algal blooms in natural bodies of water, depleting oxygen levels for aquatic organisms.

This is partially because oxygen, which causes the iron to precipitate, had not yet entered the ocean to great depths, and also because the seafloor at that time contained abundant iron released by bursts of hydrothermal activity.

BLOOMS of algae in lakes and seas, sometimes called red tides, can release neurotoxins into the food chain or suffocate the local ecology by sucking up too much oxygen.

The chemical feature that enables this suppression is a bond between two oxygen atoms — an unstable peroxide bridge that releases a tiny barrage in the form of free radicals (unpaired electrons) that can fracture parasite proteins the way an F5 twister tears apart barns.

This material, called stripe - type - lambda - trititanium - pentoxide, is composed of only titanium atoms and oxygen atoms, and can absorb and release a large amount of heat energy (230 kJ L － 1).

For the fetus, limitations in nutrient and oxygen availability cause progressive oxidative stress which prompt the release of proteins into the maternal bloodstream in an effort to improve circulation.

Based on methane and oxygen distributions measured at 207 stations throughout the affected region, we find that within ~ 120 days from the onset of release ~ 3.0 × 1010 to 3.9 × 1010 moles of oxygen were respired, primarily by methanotrophs, and left behind a residual microbial community containing methanotrophic bacteria.

Further, current models used to predict the release of climate - active CO2 from soils fail to account for these microscopic, oxygen - free zones present in many upland soils, they say.

These, in turn, triggered reactions in the upper atmosphere in which oxygen and nitrogen molecules released photons of light.

This caused oxidative stress — too much oxygen that damages healthy cells — and allowed the release of harmful molecules, called free radicals, which resulted in serious illness.

Consequently, woodlands that now drain carbon will become carbon producers because plant respiration (a process in which oxygen is taken in and carbon dioxide is given out) and the decomposition of death organic matter will exceed photosynthesis processes (carbon sequestration and oxygen release).

However, when there is no oxygen in the water — as regularly occurs at the bottom of the Chesapeake Bay during the summer time — the microbes can't do their job and dissolved methane is released into the water column and rests there at the bottom.

If oxygenated haemoglobin is injected directly into the bloodstream — rather than as a component of red blood cells in a whole - blood transfusion — it will not release the oxygen unless triggered to do so artificially.

They looked for those that were triggered to release oxygen by bicarbonate ions, and found that human haemoglobin behaved like its counterpart in crocodiles if it contained a particular sequence of just 12 amino acids from the crocodile's haemoglobin.

Haemoglobin engineered to include the crocodile's triggering mechanism, however, would release the oxygen in the presence of bicarbonate in the bloodstream.

The hydrothermal conditions of the experiments, which also mimic early Earth settings (a proximity to volcanic activity and impact craters), released a complex mixture of oxygen - rich compounds, the probable result of oxidative processes that occurred in the parent body.

The authors hypothesize that this may be further evidence that some early life may have existed in single - celled layers on land, exhaling small amounts of oxygen that reacted with the rock to release molybdenum to the water.

After a while sediment stored carbon became released to the air again, and then there was a sudden need for a lot of oxygen to react with the released carbon.

Tests of gas levels in blood flowing to and from the replacement organs showed that they were taking in oxygen and releasing carbon dioxide at 95 % of normal efficiency.

This allowed the carbon to be stored in the seabed instead of being released into the air, and thus less oxygen was needed to react with carbon.

Today there is so much of the planet's carbon stored in underground rocks that can not be released and react with oxygen.

Oxidative states are generally considered to be indicative of cellular stress; however, cells inherently release harmful reactive oxygen species during energy production, neutralized by intracellular antioxidative buffering systems.

When fumes of methanol, hydrogen and oxygen pass over the platinum coating, they react, releasing heat that warms the wire, making it contract.

This is a key component of the immune system, when the body releases reactive oxygen species to fight against invading bacteria.

As the fuel reacts with oxygen above the surface of the nanotube sheet, it releases a charge that make the sheet expand.

To heat that boiler, the damp, crumbly brown coal known as lignite — which is even more polluting than the harder black anthracite variety — burns in the presence of pure oxygen, a process known as oxyfuel, releasing as waste both water vapor and that more notorious greenhouse gas, carbon dioxide (CO2).

The fish carry a set of enzymes that, when oxygen levels drop, helps convert carbohydrates into alcohol that can be released through the gills.

But releases of oxygen from upwelling of deep mantle FeO2 patches could provide an abiotic explanation for the phenomenon, they say.

Massive releases of methane from arctic seafloors could create oxygen - poor dead zones, acidify the seas and disrupt ecosystems in broad parts of the northern oceans, new preliminary analyses suggest.