Sentences with phrase «oxygen pressures in»

The researchers» latest study, «Microvascular oxygen pressures in muscles comprised of different fiber types: Impact of dietary nitrate supplementation,» was published in the Journal of Nitric Oxide, Biology and Chemistry.

Not exact matches

The problem isn't the percentage of oxygen in the air, which stays relatively constant at about 21 % until about 70,000 feet — it's the lack of air pressure.

One of the most often - repeated explanations states that a yawn helps draw in large amounts of air to increase blood pressure, heart rate and blood oxygen levels.

(From a personal communication) Research studies reveal that various forms of meditation and relaxation produce significant changes in body chemistry, blood pressure, and oxygen consumption that probably benefit physical, mental, and spiritual health.

Greg — I can use a couple sensors and show you the partial pressure of oxygen, nitrogen, carbon dioxide, etc. in the «air».

Bacteria thrive virtually everywhere on Earth — from sub-zero temperatures to over 750 degrees F (in hydrothermal vents at the bottom of the ocean), and in widely varying oxygen, pressure and nutrient conditions.

- Heart health and healthy blood pressure - Healthy circulation of blood and oxygen in the body - Stamina, endurance, and energy

Oxygen by mask or by CPAP [or continuous positive airway pressure] can easily be arranged while in skin - to - skin contact, drips and feeding tubes can be secured sideways.

The pediatric bag holds a D tank of compressed air, regulator, T - piece resuscitator, newborn bag and mask, neonatal blood pressure cuff, Thermo - warmer used in the event of a transport, non-rebreather oxygen mask, oral airways, oxygen tubing, DeLee suction, 8F feeding tube, syringes of all sizes, pulse oximeter, and an umbilical line kit.

Some birthing people will experience a sudden drop in their blood pressure after getting the epidural, resulting in oxygen and other medicines» being administered.

Recently, Oliveira et al. (2017) have postulated that prone position during sleep in pregnancy is safe, comfortable and helps improve oxygen saturation, reducing systolic blood pressure and respiratory rate.

Umbilical cord compression can cause changes in your baby's blood pressure due to the changes in heart rate and lack of oxygen.

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

Although the drop in blood pressure is unlikely to harm the mother, the concern is that if a pregnant woman's oxygen levels drop, her baby's might too.

In rare cases, the drop in blood pressure is severe enough to reduce heart output, lower oxygen going to the brain, and cause faintinIn rare cases, the drop in blood pressure is severe enough to reduce heart output, lower oxygen going to the brain, and cause faintinin blood pressure is severe enough to reduce heart output, lower oxygen going to the brain, and cause fainting.

«In the unlikely event that the cabin loses pressure, an oxygen mask will drop from above.

Those of you who fly a lot with kids know what I'm talking about: if there is a loss of pressure in the cabin, mama's are supposed to put their oxygen mask on before they assist their children to put their masks on.

Dizziness and lightheadedness: Largely abated by eating small meals throughout the day and drinking copious amount of water to keep hydrated, dizziness and lightheadedness result from a lack of available oxygen in addition pressure placed upon blood vessels.

An example of what rocketeers call a pintle engine, even to a lay observer it is brilliantly straightforward, with one high - pressure coaxial fuel injector to mix rocket - grade kerosene and liquid oxygen instead of the hundreds of smaller injector holes used in other rocket engines.

In an article published today in the Proceedings of the National Academy of Sciences titled «Solar photothermochemical alkane reverse combustion,» the researchers demonstrate that the one - step conversion of carbon dioxide and water into liquid hydrocarbons and oxygen can be achieved in a photothermochemical flow reactor operating at 180 to 200 C and pressures up to 6 atmosphereIn an article published today in the Proceedings of the National Academy of Sciences titled «Solar photothermochemical alkane reverse combustion,» the researchers demonstrate that the one - step conversion of carbon dioxide and water into liquid hydrocarbons and oxygen can be achieved in a photothermochemical flow reactor operating at 180 to 200 C and pressures up to 6 atmospherein the Proceedings of the National Academy of Sciences titled «Solar photothermochemical alkane reverse combustion,» the researchers demonstrate that the one - step conversion of carbon dioxide and water into liquid hydrocarbons and oxygen can be achieved in a photothermochemical flow reactor operating at 180 to 200 C and pressures up to 6 atmospherein a photothermochemical flow reactor operating at 180 to 200 C and pressures up to 6 atmospheres.

Among the grantees is Evert de Jonge of Leiden University Medical Center, who will redo a randomized controlled trial published in JAMA 2016 that showed that keeping oxygen pressure low in the veins of intensive care patients reduced mortality.

While lying in a cylindrical chamber, patients breathe in 100 percent oxygen (normal air is about 21 percent oxygen) at 2 to 3 times regular atmospheric pressure, for at least an hour.

For example, when a disease biomarker is present, it causes a chain reaction in the device that results in oxygen being released and pressure building.

«Hydrogen combustion would not occur necessarily in the containment building,» Bergeron pointed out, «which is inert — it doesn't have any oxygen — but they have had to vent the containment, because this pressure is building up from all this steam.

Cortright and chemical engineer James Dumesic discovered in their university lab back in 2001 that by starting with water and various carbohydrates from plants — basically, carbon, hydrogen and oxygen compounds — and using catalysts, heat and pressure, they could start creating CO2 and hydrogen and then use that hydrogen to eliminate the oxygen as water (the process produces more water than it consumes).

In theory, less oxygen and lower air pressure should make athletic flying tougher.

The FDA's medical reviewer's recommendation for approval says, in part, that more trials before approval would «significantly delay effective therapy,» which not only reduces body weight but exerts favorable effects on blood pressure and myocardial oxygen for «patients with a serious disease condition with few treatment options.»

A team led by Thomas Muehlemann at University Hospital Zurich in Switzerland has used it to see how oxygen keeps pilots conscious when cabin pressure drops.

The treatments, administered at the Institute of Hyperbaric Medicine at Assaf Harofeh Medical Center, headed by Dr. Efrati, consisted of 40 one - hour sessions, administered five times a week over two months, in a high pressure chamber, breathing 100 % oxygen and experiencing a pressure of 1.5 atmospheres, the pressure experienced when diving under water to a depth of 5 meters.

The increase in density, and a corresponding increase in stiffness of the molten material, results because the high pressure found deep within the planet would have forced each silicon atom to have six oxygen neighbors, not the four neighbors typically found at lower pressures.

Burning gasified coal in pure oxygen at high pressure concentrates the carbon dioxide, making it far easier to capture.

To do so, explains PurGen project manager Tim Bauer, coal is ground up and heated under pressure in the presence of oxygen.

Nitrogen oxides (NOx)-- Generated when nitrogen in the air reacts with oxygen at the high temperature and pressure inside the engine.

Schuerger has tried to grow hundreds of species of bacteria and fungi in the cold, low - pressure and low - oxygen conditions found on Mars.

This oxygen deprivation forces the heart to work harder and creates surges of adrenaline, which in turn cause blood pressure to spike.

Published today in the journal Plasma Sources Science and Technology, the research by the universities of Lisbon and Porto, and École Polytechnique in Paris, shows that the pressure and temperature ranges in the Martian atmosphere mean non-thermal (or non-equilibrium) plasma can be used to produce oxygen efficiently.

It turns out that water contained in some minerals that get pulled down into Earth due to plate tectonic activity could, under extreme pressures and temperatures, split up — liberating hydrogen and enabling the residual oxygen to combine with iron metal from the core to create a novel high - pressure mineral, iron peroxide.

The core is rich in iron and the atmosphere is rich in oxygen, and between them is the entire range of pressures and temperatures on the planet.

The sensors detected changes in oxygen pressure as small as 15 millimeters of mercury, and it took less than 10 minutes to see the effects of a change in inhaled gas.

Using time series and correlation analyses, she studies how factors such as the glass quality, the age of the tools and their coatings, and the oxygen partial pressure in the machine affect the quality of the finished lens.

It turns out that water contained in some minerals that get pulled down into the Earth due to plate tectonic activity could, under extreme pressures and temperatures, split up — liberating hydrogen and enabling the residual oxygen to combine with iron metal from the core to create a novel high - pressure mineral, iron peroxide.

The heavier oxygen isotope ratio varies dependent upon the difference in vapour pressure due to the different atomic weights of normal and heavy oxygen based water.

This highly mathematical study tries to find constraints when an event in a power plant, say a pressure wave, can be traced to a source fluctuation (fuel or oxygen).

As expected, the unmedicated rats in a low - oxygen environment had mildly elevated pulmonary artery pressures after three weeks and those that received SU5416 developed severe pulmonary hypertension.

For this work, he has used a number of ultra-high vacuum surface science techniques to, for example, identify and explain several very unusual mechanistic features of the heterogeneous chemistry occurring in a catalytic converter including: a) the dramatically different CO oxidation reaction mechanism on ruthenium metal relative to other late transition metals; b) the structure sensitive selectivity of the NO reduction reaction on rhodium metal; c) deactivation of rhodium metal at high oxygen partial pressures; and d) the significantly different CO oxidation reaction mechanism over oxidized rhodium metal.

Shock is a life - threatening condition in which blood pressure drops and not enough blood and oxygen can get to organs.

With the combination of in situ synchrotron infrared spectroscopic measurements carried out at high pressure, and ab initio calculations on the ferromagnesite structure, it was possible to identify a unique vibrational signature present only in the high - pressure phase, and thus a new carbon - oxygen bond forms in ferromagnesite under pressure.

On Earth, certain microbes living in the dark, high - pressure depths of the ocean where oxygen is scarce actually consume hydrogen and carbon dioxide, producing methane in the process.

That's because breathing into the diaphragm brings more oxygen into the body, which in turn slows heartbeat and lowers blood pressure.

Just like electrolyte balance needs to be maintained, the amount of sodium in our body also needs to be regulated to keep our blood pressure at just the right spot: Too high and it can increase our risk for heart disease, too low and we can feel faint since oxygen isn't getting to our cells quickly enough.