Phase 3

Phase 3 may refer to:

Planetary phase

Refers to the periods of time during which a planet's surface reflects different amounts of sunlight, revealing different portions of the planet's surface from the perspective of a given point in space.

Inferior planets

The two inferior planets, Mercury and Venus, which have orbits that are smaller than the Earth's, exhibit the full range of phases as does the Moon, when seen through a telescope. Their phases are "full" when they are at superior conjunction, on the far side of the Sun as seen from the Earth. (It is possible to see them at these times, since their orbits are not exactly in the plane of Earth's orbit, so they usually appear to pass slightly above or below the Sun in the sky. Seeing them from the Earth's surface is difficult, because of sunlight scattered in Earth's atmosphere, but observers in space can see them easily if direct sunlight is blocked from reaching the observer's eyes.) The planets' phases are "new" when they are at inferior conjunction, passing more or less between the Sun and the Earth. (Sometimes they appear to cross the solar disk, which is called a transit of the planet.) At intermediate points on their orbits, these planets exhibit the full range of crescent and gibbous phases.

Phase (waves)

Phase in sinusoidal functions or in waves has two different, but closely related, meanings. One is the initial angle of a sinusoidal function at its origin and is sometimes called phase offset or phase difference. Another usage is the fraction of the wave cycle that has elapsed relative to the origin.

Formula

The phase of an oscillation or wave refers to a sinusoidal function such as the following:

where , , and are constant parameters called the amplitude, frequency, and phase of the sinusoid. These functions are periodic with period , and they are identical except for a displacement of along the axis. The term phase can refer to several different things:

It can refer to a specified reference, such as , in which case we would say the phase of is , and the phase of is .

It can refer to , in which case we would say and have the same phase but are relative to their own specific references.

In the context of communication waveforms, the time-variant angle , or its principal value, is referred to as instantaneous phase, often just phase.

Drug metabolism

Drug metabolism also known as xenobiotic metabolism is the biochemical modification of pharmaceutical substances or xenobiotics respectively by living organisms, usually through specialized enzymatic systems. Drug metabolism often converts lipophilic chemical compounds into more readily excreted hydrophilic products. The rate of metabolism determines the duration and intensity of a drug's pharmacological action.

Xenobiotic metabolism (from the Greek xenos "stranger" and biotic "related to living beings") is the set of metabolic pathways that modify the chemical structure of xenobiotics, which are compounds foreign to an organism's normal biochemistry, such as drugs and poisons. These pathways are a form of biotransformation present in all major groups of organisms, and are considered to be of ancient origin. These reactions often act to detoxify poisonous compounds; however, in some cases, the intermediates in xenobiotic metabolism can themselves be the cause of toxic effects.

Metro (magazine)

Metro is a glossy monthly lifestyle magazine published in New Zealand. It has a strong focus on the city of Auckland, with reportage of issues and society. The magazine was first published independently by Warwick Roger and Bruce Palmer.

History

Metro was established in 1981. The debut of the magazine coincided with the rapid expansion of the New Zealand economy that occurred from 1984, following the election of the Fourth Labour Government, who implemented widespread neoliberal deregulation and economic reform. The increased access to imported luxury goods made Metro magazine an attractive media environment for advertisers.

Metro magazine's success led to the launch of a sister title North & South, edited by Robyn Langwell. This publication took a wider look at New Zealand regional stories. Langwell was editor of North & South until June 2007. A third title, women's interest magazine More, was launched before the stable was bought by ACP Media, an Australian publishing consortium.

Metro (Oregon regional government)

Metro is the regional government for the Oregon portion of the Portland metropolitan area. It is the only directly elected regional government and metropolitan planning organization in the United States. Metro is responsible for managing the Portland region's solid waste system, coordinating the growth of the cities in the region, managing a regional parks and natural areas system, and overseeing the Oregon Zoo, Oregon Convention Center, Portland's Centers for the Arts, and the Portland Expo Center.

History and evolution

Metro in its current form evolved from Columbia Region Association of Governments (CRAG) (1966–1978) and a predecessor Metropolitan Service District (MSD) (1957–1966). Measure 6, a 1978 statewide ballot measure established Metro, effective January 1, 1979. In 1992 voters approved a home-rule charter that identified Metro's primary mission as planning and policy making to preserve and enhance the quality of life and the environment, and changed the agency's name to Metro. This charter was amended in November 2000 when Ballot Measure 26-10 was passed by voters, although the principal changes did not take effect until January 2003. The measure eliminated the Executive Office and reorganized executive staff. The position of Executive Officer, elected by voters, was merged with that of council presiding officer, chosen annually by fellow Metro councilors, creating the position of Metro council president. Metro's first president was David Bragdon, who served in the office from January 2003 until September 2010.

Metro 21

Metro 21 is a local Government-access television (GATV) cable TV station in Baton Rouge, Louisiana. It is operated by the East Baton Rouge Parish Office of Public Information and broadcasts 24 hours a day. It began with a $50,000 donation from TCI Cable (now Cox Communications) in September 1999, and every year since then, Cox gives the station an operational donation. While the station broadcasts governmental programs, it also airs programming from the Classic Arts Showcase.

The station is available to 150,000 households in the Baton Rouge area. The channel provides information to the public about city services and activities including weekly council meetings and school board meetings and classes for credit from Louisiana State University. In addition, a city directory and airport flight times from the Baton Rouge Metropolitan Airport play intermittently on the station.