Melanoma is a particular type of skin cancer. It happens when the melanocytes (the pigment cells) become cancerous. Most pigment cells are found in the skin, although melanoma can also occur in the eyes (ocular melanoma) and other parts of the body. There are many types of skin cancer but, of all skin cancers melanoma is one of the common types, though it is much less common than basal cell and squamous cell skin cancers. Melanoma is a rarer but more dangerous type of skin cancer than other types due to its faster spreading nature. It is very rare in people with dark skin. Melanoma is the best known and most important skin cancer to prevent. The treatment of skin cancer is much similar to that of other cancers, except that the aim of skin cancer therapy is invariably to completely remove it, which is possible because of its location. The other less common treatments for skin cancer include chemotherapy, photodynamic therapy (light and drug therapy, but not against melanoma), biological therapy and, although not usually, rarely radiation therapy.
High-impact journals are those considered to be highly influential in their respective fields. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on June, 2014