The sub pg/mg detection of endogenous steroid hormones and ECs in keratinized matrices is possible when using a washing ...

Also, you can do the same number of analyses with less instruments and solvents. The MicroSpher C18 HPLC column offers an HPLC column capable of very fast separation.

High performance liquid chromatography (HPLC) is a separation technique that uses liquid mobile phase to separate the components of a mixture. The sample is first dissolved in a solvent, then forced ...

Amino acids were separated by reverse phase HPLC ( octadecylsilyl silica gel column , Merck Hitachi LaChrome D-7000 HPLC System, Darmstadt, Germany) at 37 °C, using gradient mobile phase: eluent A ...

If the numbers are too high or too difficult to subtract in your head, write them down in columns. Separate the numbers into ones, tens, hundreds and thousands. List the numbers in a column and ...

List the numbers in a column and always start adding with the ones first. Estimate first and check afterwards - it's a good idea to estimate a rough answer first and then check your actual answer.

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 ...

The victory of the Roman emperor Trajan over the Dacians in back-to-back wars is carved in numerous scenes that spiral around a 126-foot marble pillar in Rome known as Trajan’s Column.