The article discusses various types of variance analysis: one-factor, two-factor, repeated measurements, including detailed analysis categorical data. criteria multiple comparisons are described: according to Bonferroni, Newman-Kales, Dunnet, Scheffe. All the methods considered accompanied by examples pharmacological

one of the disadvantages of conventional milling tools is to produce a large amount of heat in cutting zone and so making the tool warmer. as a result, the tool would be worn and its life time would be reduced. therefore, in long time machining, it is essential to change inserts and tools, continiously. a milling tool with self rotary cutting inserts was designed and manufactured that enables i...