From these results he concludes that active oxygen may be detected by its power of oxidizing carbon monoxide, and states that this fact enables us to decide whether in oxidations effected by ozone there occur free atoms of oxygen.
Graham has described the energetic reducing power of this compound but that it can also cause oxidations Hoppe-Seyler showed by bringing some strips of palladium charged with hydrogen into a solution of indigo in the presence of air.
Since the general result of these oxidations is the substitution of an OH group for an H atom, it was of interest to determine the behaviour of furfural with the peroxide.
The study of these oxidations was then extended to typical unsaturated hydrocarbons--viz.
Ruff, who has applied these oxidations with important results in the systematic investigation of the carbohydrates.
The conclusion is certainly justified that the origin of the pentoses is referable to oxidations of the hexoses, in which this form of 'active oxygen' plays an important part.
Consequently, addition of alkali favors the oxidation of luciferin, and it is quite generally true that biological oxidations are favored by an alkaline reaction.
Before considering luciferin and luciferase, however, let us study a few well-known chemiluminescent oxidations with special reference to concentration of reacting substances and temperature.
And finally, the same author showed that the oxidations in the sea-urchin egg are due to a catalytic process in which iron acts as a catalyzer.
The former effect raises the rate of oxidationsin the egg, the latter does not.
It appears from this as though the change in the cortical layer which leads to the development of the egg and the increase in the rate of oxidations were reversible in the egg of Arbacia.
Loeb and Wasteneys found that the hypertonic solution does not increase the rate of oxidations in a fertilized egg.
Oxidations and reductions in the animal body/ (this series) 92 DAKIN, H.
When the experiment is often repeated with the same coin, and the oxidations successively removed after each experiment, the film of oxide continues to diminish, and at last ceases to make its appearance.
Both of these substances express the result of oxidationsgoing on in the body.
In fact, the life of the tissues is dependent upon a continual succession of oxidations and deoxidations.
It is known, however, that the cells are the places where most of the oxidations of the body occur and that materials taking part in theseoxidations must, at least, come in close contact with the protoplasm.
Somewhat as the power of the steam engine is derived from the combustion of fuel in the furnaces, the energy of the body is supplied through the oxidations at the cells.
The oxidations at the cells are, therefore, under such control that the quantity of kinetic energy supplied to the body as a whole, and to the different organs, is proportional to the work that is done.
In the oxidations that occur in the body it is not supposed that the nutrients are immediately converted to carbon dioxide, water, and urea.
It is the purpose of oxygen to keep up these oxidations and, by so doing, to aid in supplying the body with energy.
For causing the chemical changes that occur in the storage of foods, as well as the oxidations at the cells, the presence of active agents, or enzymes, is necessary.
As a result of the oxidations and other changes at the cells, substances are produced that can no longer serve a purpose in the body.
All body oxidations may be classified in two groups: (1.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "oxidations" in a variety of sentences. We hope that you will now be able to make sentences using this word.
