... computer simulations, researchers have shown that the oxygen molecule (O2) is stable up to pressures of 1.9 ... higher than atmosphere pressure. Above that, it polymerizes, i.e. builds larger molecules or structures ...
... and create a ‘tortuous’, lengthy pathway for water and oxygen molecules, making it more difficult to travel through ... ’s defects, the nanoparticles absorb and retain the water and oxygen molecules. This concept helps reduce the number ...
... because of the large surface area that delivers oxygen molecules through a thin membrane directly to the blood. The health risk to astronauts increases as dust ...
... changes in important biomolecules. These are caused by reactive oxygen molecules, including the notorious “free radicals” that are formed as a by-product of cellular respiration and attack cellular ...
... changes in important biomolecules. These are caused by reactive oxygen molecules, including the notorious “free radicals ... that captures a large portion of reactive oxygen molecules within a cell by oxidation. If much of a cell ...
... of the equation: splitting water into its constituent hydrogen and oxygen molecules. This can be done well, but it remains difficult to actually separate the molecules. But Nocera and postdoctoral fellow Matthew Kanan ...
... , changing the location of the orbitals, and bringing the four oxygen molecules together to form the (O2)4 ... to pair with electrons in the neighboring molecules." To study the dense solid phases of oxygen, the researchers developed ...
Gold nanocluster catalysts split oxygen molecules – but cluster size is crucial
... unknown. Now, scientists from the USA have discovered that a molecule produced by a common gut bacterium activates ... . When the bacteria use fermentation they release by-products. One of these is a kind of oxygen molecule called superoxide, which can damage DNA ...
... in a single line in an airflow, which results in some of the nitrogen and oxygen molecules in the line being converted into nitric oxide ... is irradiated with a second laser and this causes the molecules to fluoresce. As these molecules move with the airflow, the speed of the airflow ...
... free radicals," unpaired oxygen molecules that can fatally react with other molecules in a cell, forcing cell death. In this theory, vitamin C could sop ...
... that break ozone down into individual oxygen molecules. A single molecule of chlorine has the potential to break down thousands of molecules of ozone. Julian Meyer-Arnek of the German ...
... involves directing a focused laser beam in a single line in an airflow, which results in some of the nitrogen and oxygen molecules in the line being converted into nitric oxide ...
... breaks down heme, a common iron molecule found in blood, into carbon monoxide, iron and biliverdin ... cell damage. Free radicals are toxic oxygen molecules that are produced when cells die. According to Dor ...
... organic free radicals, by deactivating excited oxygen molecules, or both, to prevent tissue damage." Some previous observational studies have supported a role for vitamin ...
