Silicic
Igneous rocks are classified by geologists using various schemes. One of the several schemes based on chemical composition divides igneous rocks into four categories according to silica (silic...
Read more
Silicates
Silicates are compounds of silicon, oxygen and other elements. Silica (silicon dioxide), silicate, and aluminosilicate minerals make up over 90% of the Earth's crust. Naturally occurring sil...
Read more
Scientists taking their first "sniffs of air" from planets outside our solar system are a bit baffled by what they didn't find: water.One of the more basic assumptions of astronomy is that the two ...
Read more
The first "sniffs of air" of two huge far-away planets reveal that they seem to be missing water, a surprising finding amid weather unlike any planets in our solar system with blast furnace-like gu...
Read more
Microporous membrane filtration is the technique often applied to the aseptic processing of drug preparations. This is especially appropriate when the ingredients are heat labile. Certain filter pe...
Read more
Silicic
Silicates
Waterless planets surprise astronomers
