Plasma medicine Plasma medicine Plasma medicine is an emerging field that combines plasma physics, life sciences and clinical medicine. It is being studied in disinfection, healing, and cancer. Most of the research is in vitro and in animal models. It uses ionized gas (physical plasma) for medical uses or dental applications . Plasma, often called the fourth state of matter, is an ionized gas containing positive ions and negative ions or electrons, but is approximately charge neutral on the whole. The plasma sources used for plasma medicine are generally low temperature plasmas, and they generate ions, chemically reactive atoms and molecules, and
Negative and positive rights the help of some positive duties. Shue goes further, and maintains that the negative and positive rights distinction can be harmful, because it may result in the neglect of necessary duties. James P. Sterba makes similar criticisms. He holds that any right can be made to appear either positive or negative depending on the language used to define it. He writes: Sterba has rephrased the traditional "positive right" to provisions, and put it in the form of a sort of "negative right" "not to be prevented" from taking the resources on their own.. Thus, all rights may not only require