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The air in the incubator was kept at 37 degrees Celsius, the same temperature as the human body, and the incubator maintained the atmospheric carbon dioxide and nitrogen levels necessary to promote cell growth. At this time, incubators also began to be used in genetic engineering. Scientists could create biologically essential proteins, such as ...
It is for this reason that oxygen has to be at 5% and carbon dioxide at 6% (depending on altitude). On the other hand, temperature must be set at 37 degrees. In addition, the pH levels should be between 7.2 and 7.5. Regarding the incubator, technicians should place one patient per incubator and avoid frequent door opening.
Carbogen, also called Meduna's Mixture after its inventor Ladislas Meduna, is a mixture of carbon dioxide and oxygen gas. Meduna's original formula was 30% CO 2 and 70% oxygen, but the term carbogen can refer to any mixture of these two gases, from 1.5% [ 1 ] to 50% [ 2 ] CO 2 .
The hidden city went 18 stories underground and was built with ventilation to provide fresh air and shafts to provide water to its inhabitants. Derinkuyu also had space for stables, storage rooms ...
[5] In the species that incubate, the work is divided differently between the sexes. Possibly the most common pattern is that the female does all the incubation, as in the Atlantic canary and the Indian robin, or most of it, as is typical of falcons. In some species, such as the whooping crane, the male and the female take turns incubating the egg.
A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas. Other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats such as scuba equipment, surface supplied diving equipment, recompression chambers, high-altitude mountaineering, high-flying aircraft, submarines ...
In the case of mammalian cells, this requires heating to 37 °C (99 °F). Alternatively, insect cells can be grown at room temperature. Most bioreactors are maintained at 5% carbon dioxide. [2] [128] Cells can be cultivated in either continuous or fed-batch systems. The former entails inoculating and harvesting cells in a constant process so ...
Inhaled air is by volume 78% nitrogen, 20.95% oxygen and small amounts of other gases including argon, carbon dioxide, neon, helium, and hydrogen. [18] The gas exhaled is 4% to 5% by volume of carbon dioxide, about a hundredfold increase over the inhaled amount. The volume of oxygen is reduced by about a quarter, 4% to 5%, of total air volume.