Osmium is the least abundant stable element in the earth's crust and is the densest stable element. It is found in the alloys osmiridium and iridiosmium and as an uncombined element. Osmium was first discovered by Smithson Tennant in 1803.his compound forms spontaneously when pure osmium metal is in contact with air, and is both volatile and extremely toxic, and thus the pure metal is rarely used. Osmium is, however, the most dense naturally occurring element and imparts hardness when used in metal alloys.
2 ROLES OF SEX HORMONES: 1) organizational effects - permanent, influence brain and sex organ development. 2) activational effects - occur later in life, after development of sex organs. SEX ORGAN. gonads - testes or ovaries, first to develop. internal sex organs - precursors for male and female present in embryo.
High Reliability Organizing (HRO) developed as a means to make an organization or unit stronger. In its natural state we historically found it in environments of danger or uncertainty such as military combat, firefighting, or business activities.