Sentences with phrase «negative air pressure»

Burning a piece of cotton inside the cup removed oxygen from the air, causing negative air pressure.

Not exact matches

The advanced air vent system was created to eliminate negative pressure forming inside the bottle as a baby sucks the milk out of it.

This way the negative pressure is never created and air bubbles are not forming.

This bottle helps to reduce negative pressure and air bubbles so that your baby can sleep.»

Dr. Brown's is known for their Dr. Brown's Natural Flow ® bottle, which is the only bottle «to feature an internal vent system that helps reduce colic, spit - up, burping and gas by eliminating negative pressure and air bubbles, helps preserve vitamins C, A, & E by minimizing oxidation of breastmilk and formula, and provides vacuum - free feeding similar to breastfeeding.»

Designed by a doctor in 1996, Dr. Brown's Natural Flow is the only baby bottle to feature an internal vent system that helps reduce colic, spit - up, burping and gas by eliminating negative pressure and air bubbles.

Perhaps the most important contribution by the researchers at Fort Detrick is the insistence that rooms in level - three and level - four labs, which contain lethal agents, must be at negative pressure compared with the outside, so that if there's a breach, air will flow in.

When the pressure in a house becomes negative (because little air is coming in and more is going out through the roof vents), the air at the lowest levels of the home gets pulled upward.

The net result is a negative inspiratory pressure, which draws air into the lungs.

I Believe It's a Hose Connection Point Unmetered air whether it's a negative pressure or positive pressure is bad.

This is because it will have a race camshaft which opens the inlet valves very early, it may hold the inlet and exhuast valves open at the same time to improve chamber filling using the negative pressure in the exhaust (i.e. scavange it's inlet plenum) and it will keep the valves open for as long as possible to let the maximum about of air / fuel mixture into the cylinders.

This aerodynamic device acts to define air flow at the rear with such precision that it negates the effect of disruptive air swirl and keeps the braking effect of negative pressure to a minimum.

Negative pressure going back into the pipe apparently reduces resonance at low revs but then helps the air flow out at higher revs.

The accommodations are spacious, and our negative pressure cage ventilation system gives a constant flow of fresh air that is continually exhausted out of the building.

It seems very possible that the low solar activity forced areas of low pressures into a southern route or caused a negative Arctic Oscillation, AO, which in turn allowed cold air from the North Pole to flow across Europe.

Along with the negative AO index, we've seen an increased frequency of the the Arctic Dipole Anomaly, whereby the deep polar closed low that normally keeps the Arctic air contained is split into a pressure zones on both sides of the pole (i.e. a dipole) creating zonal winds across the Arctic shunt both cold air (and ice) more vigorously out of the Arctic.

With the Blower Door running and the house pressure at negative 50 Pascals, a typical existing home might leak at the rate of 15 air changes per hour, which is written 15 ACH50.

Negative pressure inside a composting toilet means you never have to worry about walking into a bathroom that's had all the oxygen sucked out of the air (as I heard it described once).

The pattern comes in two phases: a negative one where there is high air pressure over the North Pole and low pressure at the mid-latitudes, and a positive phase when the pressure systems has reversed.

When the AO index is negative there tends to be low pressure in the polar region, weaker zonal winds, and greater movement of frigid polar air into middle latitudes.

In mechanically cooled buildings in hot - humid climates, if interior negative pressure causes moisture - laden outdoor air to enter the building envelope, moisture can condense on cool surfaces, and, if restricted from drying to the inside, problems of material durability and indoor air quality can result.

The negative state involves relatively high pressure at the pole pushing winds, cold air and storms into lower latitudes.

Global climate negotiations remain important, of course, and a global deal towards a good climate outcome has never been more desirable, but the changing costs of technologies, and domestic measures on air quality show the building and varied negative pressures on fossil fuel industries.

As snow isolates the relatively warm soil, the air above it can cool quicker, causing it to compact — a process that increases air pressure and may lead to the formation (and fixation) of high pressure systems, and indeed a negative phase in the Arctic Oscillation.

In «negative» mode, air pressure isn't quite as low over the Arctic and isn't quite as high over the mid-latitudes.

The negative phase is different, and quite rare: high pressure over the Arctic forces the cold air to spill out over North America and Eurasia, allowing warm air to rush in to the polar region.

Though there can be significant differences in regional surface impacts between one SSW event and another, the typical pattern includes changes in sea level pressure resembling the negative phase of the North Atlantic Oscillation (NAO) / Arctic Oscillation (AO), (representing a southward shift in the Atlantic storm track), wetter than average conditions for much of Europe, cold air outbreaks throughout the mid-latitudes, and warmer than average conditions in eastern Canada and subtropical Asia (see figure below, left panel).

Somewhat late, but if condensation drives winds by a decreasing the number density of water vapor in the air, then as clouds form they should shrink in size due to the negative pressure.

«Working with data pertaining to 7450 cardiovascular - related deaths that occurred within Budapest, Hungary, between 1995 and 2004 — where the deceased were «medico - legally autopsied» — Toro et al. looked for potential relationships between daily maximum, minimum and mean temperature, air humidity, air pressure, wind speed, global radiation and daily numbers of the heart - related deaths... scientists report and restate their primary finding numerous times throughout their paper, writing that (1) «both the maximum and the minimum daily temperatures tend to be lower when more death cases occur in a day,» (2) «on the days with four or more death cases, the daily maximum and minimum temperatures tend to be lower than on days without any cardiovascular death events,» (3) «the largest frequency of cardiovascular death cases was detected in cold and cooling weather conditions,» (4) «we found a significant negative relationship between temperature and cardiovascular mortality,» (5) «the analysis of 6 - hour change of air pressure suggests that more acute or chronic vascular death cases occur during increasing air pressure conditions (implying cold weather fronts),» (6) «we found a high frequency of cardiovascular death in cold weather,» (7) «a significant negative relationship was detected between daily maximum [and] minimum temperature [s] and the number of sudden cardiovascular death cases,» and (8) «a significant negative correlation was detected between daily mean temperature and cardiovascular mortality.»

With the open composting toilets, there is a negative pressure (air is sucked into the toilet) from a small, low - power fan.

Yes, air goes in the lungs, but it's drawn there by the negative pressure created by your diaphragm contracting.