When the poorly perfused alveoli empty at the same rate and the normal alveoli, it is possible to measure the alveolar dead space.

When in the lungs, M. tuberculosis is taken up by alveolar macrophages, but they are unable to digest the bacterium.

When pronouncing these sounds the tongue touches (,, ), or nearly touches (, ) the upper alveolar ridge which can also be referred to as gum ridge.

When small silica dust particles are inhaled, they can embed themselves deeply into the tiny alveolar sacs and ducts in the lungs, where oxygen and carbon dioxide gases are exchanged.

When computed tomography or, more specifically, cone beam computed tomography or CBCT ( 3D X-ray imaging ) is used preoperatively to accurately pinpoint vital structures including the inferior alveolar canal, the mental foramen, and the maxillary sinus, the chances of complications might be reduced as is chairtime and number of visits.

Part of the confusion in naming laminal consonants is, quite literally, a matter of point of view: When looking at a person pronouncing a laminal alveolar or denti-alveolar, the tip of the tongue can be seen touching the back of the teeth, or even protruding between the teeth.

When the phoneme / z /, a voiced apical alveolar fricative, represented in runic writing by the * Algiz-rune, changed to / R / an apical post-alveolar approximant, is debated.

When such blood is added to blood from well ventilated alveoli, the mix has a lower oxygen partial pressure than the alveolar air, and so the A-a difference develops.

When open, doors admit people, animals, ventilation, and light.

When the ventilation does not match the perfusion through the paranchyema of the lung.

When CO2 concentrations are elevated indoors relative to outdoor concentrations, it is only an indicator that ventilation is inadequate to remove metabolic products associated with human occupancy.

* Tracheostomy — When patients require mechanical ventilation for several weeks, a tracheostomy may provide the most suitable access to the trachea.

When a train passes through the tunnel it pushes out the air in front of it toward the closest ventilation shaft in front, and " sucks-in " the air to the tunnel from the closest ventilation shaft behind it.

When the cause for the disease was discovered, the ventilation in the production process was improved, but the dangerous type of phosphorus were soon forbidden to use for matches.

When using any type of gas sterilizer, prudent work practices will include good ventilation ( 10 air exchanges per hour ), a continuous gas monitor for hydrogen peroxide as well as good work practices and training.

When working with the pitch, make sure you are working with gloves, safety glasses and good ventilation and as always, when working with any type of open flame, make sure there is an appropriate fire extinquisher close by.

When people or animals are present in buildings, ventilation air is necessary to dilute odors and limit the concentration of carbon dioxide and airborne pollutants such as dust, smoke and volatile organic compounds ( VOCs ).

When this is insufficient, the patient might require mechanical ventilation.

When ventilation was not used such as in Crematoria IV and V ( although a ventilation system was later installed in Crematorium V in May 1944 ), Sonderkommando prisoners wore gas masks when removing the bodies.

When presented in court with a document by the chief Auschwitz architect SS-Sturmbannführer Karl Bischoff, Leuchter misconstrued aeration ( Belüftung ) and ventilation ( Entlüftung ) as part of the furnace blower systems, when they were actually in reference to the ventilation channels in the walls that straddle the gas chambers.

When tested under laboratory conditions, the SIP, included in a wall, foundation, floor, or roof system, is installed in a steady-state ( no air infiltration ) environment ; systems incorporating fiberglass insulation are not installed in steady-state environments as they require ventilation to remove moisture.

When series production started by the end of the year, many details had been altered: brakes, ventilation system, grille and parking lights.

When combined with other systems in order to control the building climate, the whole system may be an HVAC ( heating, ventilation and air conditioning ) system.

When heat recovery is not required, it is typical for the device to be bypassed by use of dampers arranged within the ventilation distribution system.

When ranges lack proper ventilation, employees and users are exposed to lead dust from bullets or cartridge primers.

When making multiple copies of an original no more than four or five copies can typically be made at a time, due to the build-up of ammonia fumes, even with ventilation fans in the duplication room.

When using a BVM, as with other methods of positive pressure ventilation, there is a risk of over-inflating the lungs.

When ambient climent is not condusive, mechanical heat recovery ventilation systems, with a heat recovery rate of over 80 % and high-efficiency electronically commutated motors ( ECM ), are employed to maintain air quality, and to recover sufficient heat to dispense with a conventional central heating system.

When worn on the ground, the suit is attached to a portable ventilation unit — a hand-held device that supplies air to the suit, cooling it first with an ice filled heat exchanger.

When following the SI convention of not-mixing unit names and unit symbols the torr can be mixed with SI units to form, for example, torr · liters / second ( Torr · L / s ).

When I enter the resupply ship, it jingles with a metallic sound, so when we separate it will sound like a brass band .” Progress 13 pumped 300 liters of water aboard on May 31.

When all of the eccrine sweat glands are working at maximum, the rate of perspiration for a human being may exceed three liters per hour, and dangerous fluid and electrolyte losses can occur.

When the drought is longer than usual the water in these tanks is exhausted and the people have to walk miles to the few villages with springs or wells, and queue up for a turn to draw a few liters of water.

When our eyes met the air was filled with an unuttered message of `` Me, too ''.

When air travel was in its infancy, the sky was considered big enough and high enough for all.

When the child raises his seat into the air, the teacher takes hold under both sides of the pelvis ; ;

When stacking wine on its side in a bin, care should always be taken to be sure there is no air bubble left next to the cork.

When they had gone, he stood for a minute breathing in the mustiness of old paper and leather which the busily thrumming air conditioner couldn't quite dispel.

When he turned into the highway that led to the outskirts of the city and then rose toward home, he had to pull over to the curb and wait for a few minutes, sucking in air and squinting and blinking his eyes to clear them of tears.

When a parcel of air descends, the pressure on the parcel increases.

When the pressure applied on a parcel of air decreases, the air in the parcel is allowed to expand ; as the volume increases, the temperature falls and internal energy decreases.

116 .</ ref > When air condenses it becomes visible, as mist and then rain and other forms of precipitation, and as the condensed air cools Anaximenes supposed that it went on to form earth and ultimately stones.

When people started to study scientifically how to fly, people began to understand the basics of air and aerodynamics.

When the particles are in great motion, they produce a Doppler shift for measuring wind speed in the laser light, which is used to calculate the speed of the particles, and therefore the air around the anemometer.

When surface to air missiles became capable of hitting high flying aircraft bombers, bombers used flight at low altitude to evade radar detection.

When Colonel de Gaulle did organize a counter-attack with superior French tanks, he did not have the air support to gain the upper hand and had to retreat.

" When Congress, in the summer of 1973, legislated an end to U. S. military action in, over, or off the shores of Indochina, the only U. S. military activity then going on was air support of a friendly Cambodian government and army desperately defending their country against a North Vietnamese and Khmer Rouge onslaught ... What destabilized Cambodia was North Vietnam's occupation of chunks of Cambodian territory from 1965 onwards for use as military bases from which to launch attacks on U. S. and South Vietnamese forces in South Vietnam.

When the stale air, warmed from the lungs, is exhaled, it condenses as it meets colder external air.

When the work was done, the artist, waving his wings, found himself buoyed upward and hung suspended, poising himself on the beaten air.

When he arrived home, Sullivan learned he would not be able to air the Bergman material from it.

When Ford approached the U. S. Federal Aviation Administration ( FAA ) about regulatory issues, the critical problem was that the ( then ) known forms of air traffic control were inadequate for the volume of traffic Ford proposed.

Allied fighters, by gaining air superiority over the European battlefield, played a crucial role in the eventual defeat of the Axis, which Reichmarshal Hermann Göring, commander of the German Luftwaffe summed up when he said: " When I saw Mustangs over Berlin, I knew the jig was up.

When forming a sibilant, one still is forcing air through a narrow channel, but in addition the tongue is curled lengthwise to direct the air over the edge of the teeth.

When the reactive substance comes in contact with the resin, it will bond to it, removing it from the air stream.