In a study published last month in mSystems, researchers from Osaka University revealed that the interaction between two common types of oral bacteria leads to the production of a chemical compound that is a major cause of ...
Cell & Microbiology
Feb 15, 2024
0
287
Nitrogen oxides, poisonous gases that contribute to acid rain and suffocating smog, are found in the fumes of diesel cars like the ones Volkswagen has admitted to fitting with emissions-cheating software.
Environment
Sep 23, 2015
1
29
A strain of bacteria that "breathes" uranium may hold the key to cleaning up polluted groundwater at sites where uranium ore was processed to make nuclear weapons.
Cell & Microbiology
Jun 15, 2015
0
1094
The physiological processes associated with an acute psychological stress response produce changes in human breath and sweat that dogs can detect with an accuracy of 93.75%, according to a new study published this week in ...
Plants & Animals
Sep 28, 2022
0
1256
Eating nuts and acorns may have helped hunter-gatherers survive 15,000 years ago in northern Africa but the practice wreaked havoc on their teeth, researchers said Monday.
Archaeology
Jan 6, 2014
0
1
(Phys.org) —In a major evolutionary discovery, Flinders University palaeontologist Professor John Long (pictured) has found evidence to show that four-legged animals first developed the ability to breathe air as ancient ...
Evolution
Jan 24, 2014
14
0
(Phys.org) —Two British research teams have begun using micro-CT scanners to watch butterfly pupae develop into butterflies while still alive inside their chrysalis shells. The first team did so as a means of studying the ...
Scientists have been exploring new ways to "smell" signs of cancer by analyzing what's in patients' breath. In ACS' journal Nano Letters, one team now reports new progress toward this goal. The researchers have developed ...
Bio & Medicine
Sep 30, 2015
0
123
With Memorial Day weekend approaching and temperatures across the nation steadily increase to summertime highs, thoughts turn to picnics, ballgames -- and bug bites. Now, a new way of stopping mosquitoes could come from a ...
Other
May 27, 2011
2
0
Air flows mostly in a one-way loop through the lungs of monitor lizards – a breathing method shared by birds, alligators and presumably dinosaurs, according to a new University of Utah study.
Plants & Animals
Dec 11, 2013
0
1
Breathing is the process that moves air in and out of the lungs. Aerobic organisms require oxygen to release energy via respiration, in the form of the metabolism of energy-rich molecules such as glucose. Breathing is only one process that delivers oxygen to where it is needed in the body and removes carbon dioxide. Another important process involves the movement of blood by the circulatory system. Gas exchange occurs in the pulmonary alveoli by passive diffusion of gases between the alveolar gas and the blood in lung capillaries. Once these dissolved gases are in the blood, the heart powers their flow around the body (via the circulatory system). The medical term for normal relaxed breathing is eupnea.
In addition to removing carbon dioxide, breathing results in loss of water from the body. Exhaled air has a relative humidity of 100% because of water diffusing across the moist surface of breathing passages and alveoli.
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