Member

A member is a person who belongs to a social group or an entity such as a company or nation. By extension it can refer to any part of a whole.

Member may also refer to:

See also

Stratigraphic unit

A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it.

Units must be mappable and distinct from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%".

Lithostratigraphic units

Sequences of sedimentary and volcanic rocks are subdivided on the basis of their lithology. Going from smaller to larger in scale, the main units recognised are Bed, Member, Formation, Group and Supergroup.

Bed

A bed is a lithologically distinct layer within a member or formation and is the smallest recognisable stratigraphic unit. These are not normally named, but may be in the case of a marker horizon.

Member

A member is a named lithologically distinct part of a formation. Not all formations are subdivided in this way and even where they are recognized, they may only form part of the formation.

Local church

A local church, sometimes called a particular church, is a Christian religious organization or community that meets in a particular location. Many are formally organized, with constitutions and by-laws, maintain offices, are served by clergy or lay leaders, and, in nations where this is permissible, often seek non-profit corporate status.

Local churches often relate with, affiliate with, or consider themselves to be constitutive parts of denominations, which are also called churches in many traditions. Depending on the tradition, these organizations may connect local churches to larger Christian traditions, ordain and defrock clergy, define terms of membership and exercise church discipline, and have organizations for cooperative ministry such as educational institutions and missionary societies. Non-denominational churches are not part of denominations, but may consider themselves part of larger Christian movements without institutional expression.

Types

A local church may be an independently run congregational church and may be associated with other similar congregations in a denomination or convention, as are the churches of the Southern Baptist Convention or like German or Swiss Landeskirchen. It may be united with other congregations under the oversight of a council of pastors as are Presbyterian churches. It may be united with other parishes under the oversight of bishops, as are Methodist, Anglican, and Eastern churches. Finally, the local church may function as the lowest subdivision in a large, global hierarchy under the leadership of one priest, such as the Pope of the Roman Catholic Church. Such association or unity is a church's ecclesiastical polity.

Radium

Radium is a chemical element with symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is almost colorless, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra₃N₂). All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1600 years and decays into radon gas (specifically the isotope radon-222). When radium decays, ionizing radiation is a product, which can excite fluorescent chemicals and cause radioluminescence.

Radium, in the form of radium chloride, was discovered by Marie Curie and Pierre Curie in 1898. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1910.

Radium (disambiguation)

Radium is a chemical element with atomic number 88.

Radium may also refer to:

See also

Radium (software)

Radium is a proprietary Internet radio player application, used for listening to internet radio streams. It emphasizes a minimalist user interface. The application does not have a main window, instead opting to provide the entire user interface through its main menu. Users can either listen to Radium's built-in selection of internet radio networks, or add their own networks provided that the their stream URL's are known. The program has been praised for its unobtrusiveness, low system resource usage, and intuitive user interface, but has also been criticized for its lack of recording functionality as of version 2.5.1.

Radium is available as a free 30-day trial for Mac OS X, after which users are required to buy a license for $9.99 USD to continue using the program; minor updates are free for all users.

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