Sentences with phrase «low oxygen levels»

People living at high altitude have evolved different ways to cope with low oxygen levels.

The influence of climate change was evident in areas with either extreme incidents of oxygen depletion or longer - than - normal trends of low oxygen levels.

I welcome trials of the stunning of chickens using low oxygen levels, which lead to death with no warning.

Most aquatic species can not survive at such low oxygen levels.

The unexpected idea has been tested only in cells and animals so far, but some scientists are already considering whether lowering oxygen levels might treat certain rare but deadly conditions.

Thanks to evolution, the animals living there have adapted to these conditions and will have little chance to adjust when the combination of warming and lower oxygen levels hits.

Heavy metals promote low oxygen levels and a low body temperature, which allows pathogens to thrive — learn more from this 33 - page eBook!

The net effect was that cells continued dividing while coping with low oxygen levels.

The seats can compress the chest wall and reduce airway size, which could result in lower oxygen levels in the blood, the researchers found.

They will also delve into the newly discovered genes regulated by low oxygen levels that are distinct from HIF1?

Players in the World Cup soccer tournament, now underway in South Africa, will have to contend with low oxygen levels at high altitude — and with a new ball, which its scientist creators say is the roundest one ever.

With federal funding from the National Institutes of Health and the National Science Foundation, Dietrich, first author Jeanyoung Jo, and their colleagues set out to better understand whether specific terminal oxidases are important for P. aeruginosa metabolism in biofilm communities, how phenazines can compensate for low oxygen levels, and how these adapted strategies may contribute to P. aeruginosa's ability to cause infections.

«If these results are confirmed, we could dismiss low oxygen levels as a possibility» for explaining the gap, says Jesus Lozano Fernandez, a paleobiologist at the University of Bristol in England, who was not involved in the new work.

As a result, the benthos population became dominated by species that could survive with much lower oxygen levels throughout the 1960s.

After measuring water quality and going through thick bacterial slime and dead marine animal bodies on the ocean floor, the researchers found extremely low oxygen levels in greater depths while there was still high oxygen in shallow waters where corals were healthy — a symptom of a dead zone.

The research, led by the University of Southampton and UCL, which took place on Mount Everest, assessed the mechanisms by which low oxygen levels in the body — known as hypoxia — are associated with the development of insulin resistance.

Microbes that proliferate at very low oxygen levels produce lots of nitrous oxide, a greenhouse gas that is 300 times more potent than carbon dioxide.

Moreover, the new guidelines for American intensive care nurseries now recommend lower oxygen levels although according to that study, this better - dead - than - blind policy kills one baby for every two cases of blindness prevented.

My baby was born at 7 pm and was taken for four hours of observation for borderline low oxygen levels in the NICU.

* regulation of baby's heart rate * regulation of baby's breathing (baby has lower oxygen levels when alone) * regulation of baby's immune system (the skin to skin contact releases oxytocin to boost baby's immune system) * bonding continues through the night as well as during the day

This may have multiple causes, some of which include low oxygen levels in the mother's blood or reduced blood flow due to compression of the umbilical cord.

One hypothesis suggests that chokingly low oxygen levels kept insect diversity from soaring during the gap and that these creatures proliferated only once the life - giving gas increased.

A lack of diverse, winged hexapods — not low oxygen levels — could explain the gap in the fossil record

Analysis of seafloor sediment reveals lower oxygen levels in the ocean when the planet heated up 55.9 million years ago

Saurabh Saha of BioMed Valley Discoveries in Kansas City, Missouri, and his colleagues wondered whether they could use the bacteria to selectively kill mammalian cells within cancerous tumours, which often have a poor blood supply and therefore low oxygen levels.

A group of researchers led by physical anthropologist Cynthia Beall of Case Western Reserve University in Cleveland, Ohio, hypothesized that Tibetans might offset low oxygen levels by increasing blood flow.

«We think low oxygen levels at night might accelerate cognitive decline in old people, and studies have found that sleep apnoea causes changes in the grey matter in the brain.

So, at some point in each stage the caterpillar's body becomes too big for its respiratory system, the bug starts suffocating, and the resultant low oxygen levels spur exoskeleton shedding.

«We found that particularly low oxygen levels coincided with intervals of elevated global temperatures and high carbon dioxide concentrations,» explains Tappert.

But the OCWD aerated their water, so low oxygen levels were not to blame.

Other research groups have had some success with acclimating cells to lower oxygen levels before transplantation; another promising strategy has been to provide the stem cells with scaffolds that give them structure and help integrate them with the host.

Measuring oxygen levels could also reveal the metastatic potential of a tumor: Those with lower oxygen levels tend to spread more aggressively.

Off the coast of West Africa, swirling eddies carry dead zones with remarkably low oxygen levels at shallow depths, according to an international study.

Some marine animals, like jellyfish, can survive relatively low oxygen levels.

Ammonia gas can also fall back to Earth and enter lakes, streams and oceans, where it contributes to harmful algal blooms and «dead zones» with dangerously low oxygen levels.

The lichens might not survive on Mars for long, however, because of low oxygen levels in the atmosphere.

Nitrogen pollution causes algae blooms that lower oxygen levels as they decompose, causing dead zones.

«What this says is that it's possible for animals to be diversifying like normal even at much lower oxygen levels.»

These papers describe geochemical signatures in the rock record that track extremely low oxygen levels in the atmosphere, perhaps much less than 1 percent of modern values, up until about 800 million years ago, when they spiked dramatically.

Physicians are helping to prevent BPD by using lower ventilator pressures, by using CPAP instead of ventilators whenever possible, and by using lower oxygen levels.

What we can do is cheat those consumers by getting farmers to burn their crop waste at very low oxygen levels to turn it into charcoal, which the farmer then ploughs into the field.

Indeed, the fetus remains for the most part sedated by low oxygen levels and anaesthetic chemicals that are produced by the placenta, says Lagercrantz.

A new study in the Journal of Clinical Sleep Medicine revealed that 44 percent of adults with sickle cell disease who report trouble sleeping actually have a clinical diagnosis of sleep disordered breathing, including sleep apnea, which lowers their oxygen levels at night.

«Lungs started to appear in fish underwater when they evolved air breathing in response to low oxygen levels in water 350 to 400 million years ago,» says study author Peter Madsen, a biologist at Aarhus University in Denmark.

Anemia patients essentially suffer symptoms associated with low oxygen levels.

Researchers in parallel studies in Australia, New Zealand, and England looked at the same pooled data and recommended strongly to avoid the low oxygen levels because of this increased mortality.

The Commonwealth Environmental Water Holder is investigating whether there are opportunities to use the limited volumes of environmental water available to provide refuge habitat for aquatic species (particularly if the decay of the algal bloom leads to low oxygen levels in the waterways).

Letting an infant sleep in that position for extended periods of time can lower oxygen levels by 20 %,, cause suffocation, and also damage the spine.