Sentences with phrase «decreased oxygen in»

One hypothesis has been that decreased oxygen in the deep ocean may weaken respiration of organic carbon to CO2, causing organic carbon to accumulate there.

Warming waters are decreasing oxygen in the oceans, creating dead zones for marine plants and animals.

«We find that climate change will move the onset of hypoxia ~ 7 days earlier, while also decreasing oxygen in the bay primarily due to increased temperature.

Not exact matches

And as your baby grows and pushes up on your lungs, you'll notice a decreased ability to breathe in more air (and the oxygen it contains) when you exercise.

The level of oxygen being carried throughout the body decreases in proportion to the amount of hemoglobin converted to methemoglobin.

It's also important to note that a frequently cited 2009 study published in the journal Pediatrics found that healthy newborns sitting in a car seat had significantly decreased blood oxygen levels compared to those laying flat and the researchers concluded that infant car seats should be used for car travel and not as a replacement for a flat sleeping surface.

According to Dr. Jennifer Peterson, from the Cleveland Clinic Children's, «Kangaroo care can actually decrease the heart rate, improve the breathing pattern, improve the oxygen levels in the premature babies.

One researcher notes that the supine position (lying on the back) may contribute significantly to hypotension and FHR abnormalities when an epidural is in place.73 Another found that the supine position (plus epidural) was associated with a significant decrease in the oxygen supply to the baby's brain (fetal cerebral oxygenation).74

Hypothermia is the body's attempt to preserve heat in extreme cold; it decreases heart rate and blood pressure, so less oxygen is required.

This test can last 1 to 2 hours depending on hospital policy and any repeated decreases in oxygen saturation will result in a failure.

Apnea can cause the «B,» bradycardia, which is a decrease in the baby's blood oxygen level and a heart rate under 80 beats per minute.

Sarah Updegraft, RN: When you're in an extended state of anxiety and fear during labor, it can actually affect your labor by decreasing the amount of blood and oxygen getting to your uterus, which can affect your contraction pattern and over time might affect how the baby is tolerating the labor.

Introduced in the 1970s, EFM was supposed to decrease perinatal mortality and cerebral palsy (CP) by detecting fetal heart rate patterns that indicate oxygen deprivation during labor.

By comparing the two sets of data, the researchers saw a 30 to 50 percent decrease in maximal oxygen uptake.

Carl Ade, assistant professor of exercise physiology, and collaborators partnered with the Johnson Space Center to find that astronauts» exercise capacity decreases between 30 and 50 percent in long - duration spaceflight because the heart and small blood vessels are not as effective at transporting oxygen to the working muscle.

The NASA - funded research appears in the Journal of Applied Physiology in the publication «Decreases in maximal oxygen uptake following long - duration spaceflight: Role of convective and diffusive O2 transport mechanisms.»

Based on instrumental records of oxygen in the lake water, the scientists calculated that since 1946 the amount of oxygenated lake - bottom habitat decreased by 38 percent.

In humans, abnormal and excessive blood vessel growth related to decreased oxygen supply is the most common cause of blindness in premature babies, diabetics, and the elderlIn humans, abnormal and excessive blood vessel growth related to decreased oxygen supply is the most common cause of blindness in premature babies, diabetics, and the elderlin premature babies, diabetics, and the elderly.

Keeling has documented a decrease in oxygen levels that is due to fossil - fuel combustion, which uses up oxygen and releases CO2.

Lothar Stramma, a physical oceanographer at the Christian Albrechts University of Kiel in Germany and his associates describe the hypoxic problem as global in a paper accepted for publication in Deep - Sea Research, stating that tropical low - oxygen zones have expanded horizontally and vertically around the world, and that subsurface oxygen has decreased adjacent to most continental shelves.

Scientists say reserves can help marine ecosystems and people adapt to five key impacts of climate change: ocean acidification; sea - level rise; increased intensity of storms; shifts in species distribution, and decreased productivity and oxygen availability.

In this regard, one of the key questions is: How will the warming of the oceans and resultant decrease in dissolved oxygen impact marine life forms» productivitIn this regard, one of the key questions is: How will the warming of the oceans and resultant decrease in dissolved oxygen impact marine life forms» productivitin dissolved oxygen impact marine life forms» productivity?

But the balance between DVMs and the limited deep - water oxygen supply could be easily upset, Bianchi said — particularly by climate change, which is predicted to further decrease levels of oxygen in the ocean.

«Oxygen is less soluble in warmer water, and there are already suggestions of such decreases.

Zeroing in on NANOG, the scientists found that low oxygen conditions increased NANOG's mRNA levels through the action of HIF proteins, which turned on the gene for ALKBH5, which decreased the methylation and subsequent destruction of NANOG's mRNA.

The researchers discovered there was no change in aerobic (oxygen - dependent) resting metabolic rate for mice fed risperidone compared to control mice, but there was a significant decrease in non-aerobic resting metabolic rate sufficient to account for the animals» weight gain

«By measuring the oxygen - binding properties of these engineered hemoglobins, we discovered that the same individual mutations produced an increased oxygen - affinity in some combinations and they produced a decreased oxygen - affinity in other combinations.

Burning all the tropical forests in the world would decrease the proportion of oxygen by four - hundredths of 1 percent.

To his surprise, he found that mutations allowing the bacterium to adapt to low - oxygen conditions in the mucus also decrease its susceptibility to antibiotics.

The researchers undertook the study in light of concerns about decreasing levels of oxygen in coastal waters worldwide, and how the growing prevalence of low - oxygen «dead zones» might affect populations and management of blue crabs and other coastal marine life.

By the 1950s, a declining mayfly population in the western basin of Lake Erie indicated widespread anthropogenic eutrophication (human activities resulting in more nutrients such as phosphorus in the water, leading in turn to decreased oxygen levels).

When they restored normal nitric oxide levels by having mice breathe in the short - lived gas — as patients have done in clinical trials — cell adhesion did not increase when oxygen levels decreased.

From 1990 to 2010, the nitrogen isotope record indicates that oxygen content steadily decreased in the area, as expected.

The main conclusions are that the strength of doubly ionized oxygen increases going back in time, while the strength of singly ionized oxygen increases up to 11 billion years ago and then decreases for the remaining one to two billion years.

By triggering a process called autophagy — in which cells literally engulf their own insides — researchers from Drexel University and Yale University were able to decrease lung injury in mice that were exposed to high concentrations of oxygen.

This in turn triggered decreases in marine phosphate concentrations, productivity, organic carbon burial and ultimately oxygen.

«One, as water becomes warmer, the solubility of oxygen decreases in it, so it can hold less oxygen.

This means that (1) animals are directly involved in an oxygen - regulating cycle or feedback loop that has previously been overlooked, and (2) we can directly test the idea (despite the uncertainties associated with looking so far back in time) by looking for a decrease in ocean oxygenation in conjunction with the spread of bioturbation.

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.

By early August, concentrations decreased until they returned to background levels when normal oxygen conditions returned in late September.

Importantly, our study suggests that, by focusing research exclusively on adults, it is likely that we will underestimate the number of species vulnerable to decreasing levels of oxygen in the marine environment.»

For VO2 max, decreases in maximum oxygen can mean decreased athletic performance.

«We already know there are physiological benefits in the newborns when they are held skin - to - skin,» Dr. Isaza said, such as stabilization of heart rate, breathing patterns and blood oxygen levels, gains in sleep time and weight, decreased crying, greater breastfeeding success and earlier hospital discharge.

The researchers, thus, conclude that an increase in carbon dioxide levels caused by extremely strong vulcanism was accompanied by a decrease of atmospheric oxygen.

Breathing in bursts may be the insect's way of decreasing oxygen deliveries to tissues when their metabolic needs are low, says Bradley.

A decrease in temperature means that the hydrogen and oxygen atoms of the water no longer have enough energy to bounce out of the six - sided pattern they naturally nestle into.

Although the Cambrian explosion generated a large number of new phyla of Earth - type life, it actually crashed in a mass extinction not long after it began when oxygen levels fell and hydrogen sulphide levels rose again so that biodiversity at the family, genus, and species levels was decreasing around 515 million years ago (Gill et al, 2011; and Michael Marshall, New Scientist, January 5, 2011).

«Understanding such processes is especially important today since oxygen in the ocean is decreasing, largely due to the warming of ocean waters driven by climate change,» said the study's lead author Andrew Margolin, a postdoctoral researcher at the College of William & Mary's Virginia Institute of Marine Science and an alumnus of the UM Rosenstiel School.

Observed decreases in oxygen content of the global ocean.

The most common animal model used to study OSA today is intermittent hypoxia (IH) which relies solely on exposing animals to a decrease in blood oxygen levels.