Sentences with phrase «decreases the oxygen by»

The combustion of fossil fuel that increases carbon dioxide by 0.7 per cent per year decreases the oxygen by only 0.001 per cent per year (Ehrlich, Ehrlich & Holdren 1977, p. 79).

Not exact matches

They found that exercise may help cognition by increasing blood and oxygen to the brain, increasing levels of norepinephrine, and endorphins to decrease stress and improve mood, and increasing growth factors that help create new nerve cells and support synaptic plasticity.

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.

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.

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.

«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.

Additionally, increasing the algae blooms would likely wreak havoc by decreasing the oxygen available for other 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.

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 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.

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

When microorganisms decompose this biomass, they thereby consume more oxygen than can be supplied by surrounding waters and thus the oxygen concentration decreases.

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.»

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

That helps them avoid serious problems caused by too much hemoglobin, but Tibetans with this so - called decreased hemoglobin phenotype must somehow use small amounts of oxygen efficiently to get enough of it to their limbs while exercising at high altitude.

The ExoHiker is designed to actually decrease the wearer's oxygen consumption by 15 percent.

«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.

When water used as a coolant is returned to the natural environment at a higher temperature, the change in temperature impacts organisms by (a) decreasing oxygen supply, and (b) affecting ecosystem composition.

the additional oxygen decrease beyond that is strongly correlated with decreased subsurface primary production and strengthened poleward flows by the California Undercurrent.

The regions that comprise the functionally connected resting - state default - mode network (DMN) in adults appear to be the same as those that are characterized by task - induced decreases in blood - oxygen - level - dependent (BOLD) signal.

During the rest period the blood flow in the triceps decreases, the oxygen flow to the triceps decreases and the disposal of by - products from the muscle is slower.

They've also been shown to help decrease DNA damage by reducing inflammation (the underlying cause of many diseases) and reactive oxygen species.

Hair loss can be caused by a decrease in blood flow to the hair follicles, which reduces oxygen and nutrients needed for hair to thrive.

The body learned to tolerate the meager portions of food you served it by lowering oxygen uptake — decreased oxygen means decreased metabolism.

By decreasing the amount of oxygen you need to run at given speeds you will be able to keep a faster pace.

WHAT IT DOES: Using a combination of premium ingredients at clinically tested dosages, FIT is able to enhance and boost your endurance, power, and strength capabilities by increasing your oxygen uptake and efficiency, decreasing lactate, as well as raise and improve your antioxidant capacity.

Using a combination of premium ingredients at clinically tested dosages, FIT is able to enhance and boost your endurance, power, and strength capabilities by increasing your oxygen uptake and efficiency, decreasing lactate, as well as raise and improve your antioxidant capacity.

It does this by accelerating the production of erythropoietin (EPO)-- a hormone released from the kidneys that increases the rate of production of red blood cells in response to a decrease in oxygen in the blood and muscles.

Circulation to the brain can be decreased by atherosclerosis, leading to lower available oxygen.

The tyrosol and hydroxytyrosol in EVOO may decrease the likelihood of cancer cell regeneration by interfering with angiogenesis and lowering the supply of oxygen that would otherwise be available for new blood vessel formation.

For example, KBs were recently reported to act as neuroprotective agents by raising ATP levels and reducing the production of reactive oxygen species in neurological tissues, 80 together with increased mitochondrial biogenesis, which may help to enhance the regulation of synaptic function.80 Moreover, the increased synthesis of polyunsaturated fatty acids stimulated by a KD may have a role in the regulation of neuronal membrane excitability: it has been demonstrated, for example, that polyunsaturated fatty acids modulate the excitability of neurons by blocking voltage-gated sodium channels.81 Another possibility is that by reducing glucose metabolism, ketogenic diets may activate anticonvulsant mechanisms, as has been reported in a rat model.82 In addition, caloric restriction per se has been suggested to exert neuroprotective effects, including improved mitochondrial function, decreased oxidative stress and apoptosis, and inhibition of proinflammatory mediators, such as the cytokines tumour necrosis factor - α and interleukins.83 Although promising data have been collected (see below), at the present time the real clinical benefits of ketogenic diets in most neurological diseases remain largely speculative and uncertain, with the significant exception of its use in the treatment of convulsion diseases.

By blocking this enzyme, the blood vessels can remain relaxed so the pet's blood pressure can decrease to allow the blood and oxygen to flow to the heart more effectively.

The therapeutic dotential of dietary precursor modulation by a fish - oil - supplemented diet (n - 3 fatty acids), such as eicosapentaenoic acid (C20: 5,n - 3) and docosahexaenoic acid (C22: 6,n - 3) in the therapy of ulcerative colitis has been shown to result in a 35 % to 50 % decrease in neutrophil production of LTB4.28 Significant improvement in symptoms and histologic appearance of the rectal mucosa has been observed in several small series of patients with Crohn's disease and ulcerative colitis given fish oil at 3 to 4 g daily for 2 to 6 months in uncontrolled studies.29 However, a larger, randomized, double - blind trial comprising 96 patients with ulcerative colitis failed to reveal any benefit in remission maintenance or treatment of relapse on 4.5 g of eicosapentaenoic acid daily, despite a significant reduction in LTB4 synthesis by blood peripheral polymorphonuclear cells.30 It should be emphasized, however, that the anti-inflammatory actions of the fish oils, in addition to inhibition of LTB4, include suppression of IL - 1 and platelet activating factor synthesis and scavenging of free oxygen radicals.30 The impact of increased lipid peroxidation after fish oil supplementation should be considered when altering the n - 6: n - 3 fatty acid ratio.31 Antioxidant supplementation may be able to counteract the potentially adverse effects of n - 3 fatty acids.

PRBCs are used to restore the oxygen carrying capacity to the blood of a patient that is suffering from anemia (a condition characterized by a decreased number of red blood cells or hemoglobin in the blood), and are one of the most important blood components used in transfusion medicine.

We find that the global methane hydrate inventory decreases by approximately 70 % (35 %) under four times (twice) the atmospheric CO2 concentration and is accompanied by significant global oxygen depletion on a timescale of thousands of years.

See: UK Green Party: «There exists a more serious crisis than the «CO2 crisis»: the oxygen levels are dropping and the human activity has decreased them by 1/3 or 1/2 — By Peter Tatchell of the UK Green party — UK Guardian — August 13, 20by 1/3 or 1/2 — By Peter Tatchell of the UK Green party — UK Guardian — August 13, 20By Peter Tatchell of the UK Green party — UK Guardian — August 13, 2008

(c) If the nitrogen — oxygen atmosphere of the Earth would be replaced by a CO2 atmosphere with the same pressure of 1 atm, then the average near - surface temperature would decrease by approximately 2.5 °C and not increase as commonly assumed.

Simulations with GCMs by Stevenson et al. (2000) and Grewe et al. (2001) for the 21st century indicate a decrease in the lifetime of tropospheric ozone as increasing water vapour enhances the dominant ozone sink from the oxygen radical in the 1D excited state (O (1D)-RRB- plus water (H2O) reaction.

While these dead zones are often caused by fertilizer runoff currently, it seems the decreasing ability of the oceans to hold dissolved oxygen with continued warming will increasingly become a problem for marine ecosystems and fisheries in the coming decades.

So the increase in CO2 is accompanied by a decrease in Oxygen.

Modest increases in the export of organic matter, or decreases in ventilation by the circulation, could decrease oxygen below the critical threshold for fixed nitrogen loss.

With a 2 °C warming, the solubility would decrease by 14 μM resulting in a large expansion of areas depleted of dissolved oxygen and turning large areas of the ocean into places where aerobic life disappears.

Furthermore, a hypothetical warming of 1 °C would decrease the oxygen solubility by 5 μM (a few percent of the saturation value).

Fish that are caught by the low oxygen levels suffer a host of debilitating reproductive problems, including lower egg counts, lack of spawning and the decreased size of reproductive organs.

Cerebral palsy, a movement disorder that can result in paralysis, seizures and cognitive impairments, is often caused by a sudden decrease in the amount of oxygen reaching a child's brain during delivery.

Most climbers use bottled oxygen above 7,000 m which, at the summit, lowers the physiological elevation of Everest by some 1,000 m — climbing without oxygen is a truly dangerous exercise because rational thought seriously decreases while chances of frostbite and exposure dramatically increase.