Sampling is a technique in which samples are drawn at random (without any favor or bias). For this, suitable measures or procedures may be laid down and adopted according to the nature and ...

This is a preview. Log in through your library . Abstract Background: Current methodology for multidrug-resistant tuberculosis (MDR TB) surveys endorsed by the World Health Organization provides ...

Hydrologists from the Department of Energy's Pacific Northwest National Laboratory are using a simple apparatus of quarter-inch-diameter plastic tubing to collect samples at varying levels in the ...

There are few things more depressing for an arable farmer than having a load of grain rejected. While losing a premium for low Hagbergs in milling wheat or high nitrogen in malting barley is ...