The Viva columns are based on a wide pore material designed for optimal large-molecule separations. The commercial wide-pore silicas meet the standard 300 Å mean pore size, most have very broad ...

An identity column is a special column that is generated automatically from an implicit sequence. It can be used to generate key values. Similarly, the keyword DEFAULT can be used in UPDATE commands.

A generated column is a special column that is always computed from other columns. Thus, it is for columns what a view is for tables. There are two kinds of generated columns: stored and virtual. A ...

There's much to enjoy about the retirement years - and you don't need a million dollars to do so. Photo / 123rf Q: I quit my job to look after my terminally ill husband. I am 62 years old. We have ...

From there, a wide variety of phases are bonded to give chromatographers a stable and selective column. particle size: 1.9 μm, 3 μm, or 5 μm, spherical pore size: 140 Å ...