Vicodin is a combination drug made up of acetaminophen and hydrocodone. Acetaminophen is not tested for in urine drug screens, but hydrocodone is - it's part of the 'opioid' family of pain-relievers. Hydrocodone has a 1/2 life of 3.3-4.4 hours: this means it takes that long for 1/2 of the drug in your blood to leave your body.
The definition of barrage is a large volume of something, or a huge amount of things happening all at once. An example of a barrage is when 100 reporters all shoot questions at the president at the same time.
Instead, the X-ray data point to this galaxy being the remnants of a larger galaxy that had its outer stars ripped away by tidal forces, leaving behind the dense inner core of the galaxy. A tidal barrage is a dam-like structure that captures energy from the tidal forces of masses of water such as bays or rivers. Scientists aren't quite sure how close Apophis will skim by Earth then, since the rock's close flyover in 2029 will probably alter its path due to both tidal forces on Earth and (http://en.