descreening. Definition: Process in image processing of avoiding or removing moirÃ© effects in images due to scanning of photomechanically reproduced photographs or the capture of subjects with fine, regular pattern e.g. weave of jacket. * May take place during image capture or in post-processing. Why is it never straightforward?
In the above reaction between hydrogen and oxygen gases, oxygen is the oxidizing agent. Oxygen is a good oxidizer in reactions. Further, hydrogen peroxide, sulfuric acid, nitric acid, halogens, permanganate compounds, and Tollenâs reagent are some of the common oxidizing agents. Reducing Agent.
In one sense, an oxidizing agent is a chemical species that undergoes a chemical reaction that removes one or more electrons from another atom. In that sense, it is one component in an oxidationâreduction (redox) reaction. In the second sense, an oxidizing agent is a chemical species that transfers electronegative atoms, usually oxygen, to a substrate. Combustion, many explosives, and organic redox reactions involve atom-transfer reactions.