Thin-layer chromatography is one of the chromatography techniques which are used to separate the non-volatile mixtures. Thin-layer chromatography can be performed on glass sheets, aluminium foil, which is coated with adsorbent material like silica gel and cellulose. The progress of a reaction can be monitored by Thin-layer chromatography. It is also used to determine the purity of a substance.
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 September, 2024
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