carbon dioxide content


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carbon dioxide

 
an odorless, colorless gas, CO2, resulting from oxidation of carbon, formed in the tissues and eliminated by the lungs; used in some pump oxygenators to maintain the carbon dioxide tension in the blood. It is also used in solid form; see carbon dioxide snow and carbon dioxide slush.
carbon dioxide combining power the ability of blood plasma to combine with carbon dioxide; indicative of the alkali reserve and a measure of the acid-base balance of the blood.
carbon dioxide content the amount of carbonic acid and bicarbonate in the blood; reported in millimoles per liter.
carbon dioxide–oxygen therapy administration of a mixture of carbon dioxide and oxygen (commonly 5 per cent CO2 and 95 per cent O2 or 10 per cent CO2 and 90 per cent O2); used for improvement of cerebral blood flow, stimulation of deep breathing, or treatment of singultation (hiccupping). Carbon dioxide acts by stimulating the respiratory center; it also increases heart rate and blood pressure. Therapy is given for 6 minutes or less with a 5 per cent mixture and 2 minutes or less with a 10 per cent mixture. Potential adverse effects include headache, dizziness, dyspnea, nausea, tachycardia and high blood pressure, blurred vision, mental depression, coma, and convulsions.
carbon dioxide slush solid carbon dioxide combined with a solvent such as acetone, and sometimes also alcohol; used as an escharotic to treat skin lesions such as warts and moles and as a peeling agent in chemabrasion.
carbon dioxide snow the solid formed by rapid evaporation of liquid carbon dioxide, giving a temperature of about −79°C (−110°F). It has been used in cryotherapy to freeze the skin, thus producing local anesthesia and arrest of blood flow. See also carbon dioxide slush.

car·bon di·ox·ide con·tent

the total carbon dioxide available from serum or plasma following addition of acid; measured routinely in hospital laboratories as a component of electrolyte profiles.

carbon dioxide content

CO2 content Arterial blood gases A measure of the relative blood concentration of CO2, measured using pH electrodes, by enzymes, or based on changes in pH Ref range < age 2–18-28 mmol/L; > 2 yrs–venous 22-26 mmol/L; > 2 yrs–arterial 22-32 mmol/L ↓ in Respiratory alkalosis–DKA, lactic acidosis, alcoholic ketoacidosis, hyperventilation, metabolic acidosis, kidney disease, renal failure, diarrhea, Addison's disease, ethylene glycol poisoning, methanol poisoning ↑ in Severe vomiting, gastric drainage, hypoventilation–eg, emphysema or pneumonia, hyperaldosteronism, Cushing syndrome. See Arterial blood gases.
References in periodicals archive ?
The growth rate of the air's carbon dioxide content, for example, has been constant since approximately 1975 and smaller than that assumed by the IPCC.
"Wheat beers have an aroma of cloves and a freshness from the high carbon dioxide content that makes it ideal for a spring drink," says brewmaster Luxhoj.
But the other main idea from the US -- massive planting of forests to help reduce the carbon dioxide content of the atmosphere -- is surely worth consideration as part of global policy.
"It measures the difference between the carbon dioxide content of the air at two different levels--one just above the plants and the other about three feet above the canopy [of rangeland plants]," explains ARS scientist Raymond Angell.
The government subsidizes corn-alcohol production, which slightly reduces the carbon dioxide content of engine gas discharge.
At the same time clamshell packages are wrapped in MAP to lower and maintain the oxygen content at 5%, increase the carbon dioxide content to 1%, and allow enough water vapor to pass through the package to prevent condensation and fungal growth.
When connected to a natural gas system, the company says the metering device can provide a fast, accurate, close to real time measurement of physical gas properties such as thermal conductivity, speed of sound and carbon dioxide content. From these measurements it infers an effective gas mixture comprising five components: methane, ethane, propane, nitrogen, and measured carbon dioxide.
In a 1969 September memo, Moynihan wrote that there was a widespread agreement that carbon dioxide content would rise 25 percent by 2000.
All other influencing fermenting parameters, such as pitching rate, yeast generation, fermenting vessel geometry, the amount of assimilable nitrogen, yeast nutrients, oxygen and carbon dioxide content, and sugar content were the same for all trials regardless of the yeast used.
If we removed every last soul of the UK's 60 million people, and bulldozed the entire human edifice of industry, buildings and transport into the sea it would reduce global carbon dioxide emission by less than 2% and would not measurably alter atmospheric carbon dioxide content.
Sumaira Abdul Ali, an environmentalist and founder of Awaaz Foundation, said, "We need to increase Mumbai's tree cover urgently as that is the only way to reduce the carbon dioxide content in the air.
Hail has a high carbon dioxide content. Similarly, the Bab sour gas development originally tendered along with Shah forms part of Adnoc's future plans, but it may be many years before the project reaches the implementation phase.

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