I then put the front tire on the rear, and a new tire on the front. On my roadie (700x23 Michelin Carbons) or my commuter (700x28 Specialized Armadillos), a brand new tire on the rear usually gets me about 1500-2000 miles. A 'front' tire on the rear gets a few hundred miles less.
Morphine is an opioid pain medication. An opioid is sometimes called a narcotic. Morphine is used to treat moderate to severe pain. Short-acting formulations are taken as needed for pain. The extended-release form of this medicine is for around-the-clock treatment of pain. This form of morphine is not for use on an as-needed basis for pain.
Morphine is a controlled drug from prescription point of view and is usually prescribed as morphine sulphate or under different trade names e.g. MST, MXL, Oramorph and Sevredol etc. The word morphine is derived from 'Morpheus' the god of dreams in Greek mythology. Chemical name for morphine is: (5 alpha, 6 alpha) 7,8 didehydro-4,5 epoxy-17methylmorphinan-3,5diol. It is an opiate alkaloid and a constituent of opium which is the name given to the dried juice of the unripe seedpods of poppy flower (Papaveretum somniferum). Codeine and heroin are derivatives of morphine. Codeine is methylmorphine and is well-known for its analgesic, anti-tussive and anti-diarrhoeal properties.