Archipelago

An archipelago (ⁱ/ɑːrkᵻˈpɛləɡoʊ/ ark-i-PEL-ə-goh), sometimes called an island group or island chain, is a chain, cluster or collection of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- ("chief") and πέλαγος – pélagos ("sea") through the Italian arcipelago. In Italian, possibly following a tradition of antiquity, the Arcipelago (from medieval Greek *ἀρχιπέλαγος and Latin archipelagus) was the proper name for the Aegean Sea and, later, usage shifted to refer to the Aegean Islands (since the sea is remarkable for its large number of islands). It is now used to refer to any island group or, sometimes, to a sea containing a small number of scattered islands.

Types

Archipelagos may be found isolated in bodies of water or neighboring a large land mass. For example, Scotland has more than 700 islands surrounding its mainland which constitute an archipelago. Archipelagos are often volcanic, forming along island arcs generated by subduction zones or hotspots, but may also be the result of erosion, deposition, and land elevation. Depending on their geological origin, islands forming archipelagos can be referred to as oceanic islands, continental fragments, and continental islands. Oceanic islands are mainly of volcanic origin. Continental fragments correspond to land masses that have separated from a continental mass due to tectonic displacement. Finally, sets of islands formed close to the coast of a continent are considered continental archipelagos when they form part of the same continental shelf so islands are just exposed continental shelf.

Archipelago (disambiguation)

An archipelago is a landform which consists of a chain or cluster of islands.

It may also refer to:

In geography:

In music:

In film

In literature

In other fields:

Vibrasphere

Vibrasphere was a progressive psytrance music duo from Uppsala, Sweden. Its founding members were Rickard Berglöf and Robert Elster.

History

Rickard was previously a member of early Goa group Subcouds and at around the same time Robert had started musical production on an Amiga. After meeting through Rickard's younger cousin, the pair decided to start studio recordings in June 1998 with the creation of Vibrasphere.

Robert decided to quit the group half a year after the release of their second album, Lime Structure, due to constant touring. Rickard continued both touring and studio recording. In 2005 Robert decided to rejoin the group, leaving Rickard still in charge of touring duties.

Current events

Their fourth album, Exploring the Tributaries (2007), took a few more leaps towards progressive, fading the barriers between trance and house music while also featuring dub, downbeat and ambient tracks.

In November 2010, Vibrasphere announced it was disbanding. The group's website stated "We are very sorry to inform you that we have decided to close down the Vibrasphere project. This is due to several reasons, but mainly we feel it is time to move on to other projects within the music. After all, 12 years is a very long time for any music project. We are very grateful to all the fans, promoters, labels, djs and other people that have supported us in the past 12 years."

Magnetic resonance imaging

Magnetic resonance imaging (MRI), nuclear magnetic resonance imaging (NMRI), or magnetic resonance tomography (MRT) is a medical imaging technique used in radiology to image the anatomy and the physiological processes of the body in both health and disease. MRI scanners use strong magnetic fields, radio waves, and field gradients to form images of the body.

Mri (fictional alien species)

The mri are a fictional alien species in the Faded Sun Trilogy of C. J. Cherryh's Alliance-Union universe. Their culture appears to be drawn upon those of the Apache, Berbers (especially Tuaregs), and Japanese samurai. Their name means simply "the people," and they refer to all other races as "tsi-mri," which literally means not people.

Physical appearance

The mri are a tall and slender humanoid species. Their skin is golden in color and their hair is coarse and golden-brown, generally worn shoulder-length. Their eyes are yellow, with epicanthic folds and a functional nictitating membrane to protect them against wind-blown grit. Their ears are slightly pointed, with a tuft of hair at the tip resembling that of a lynx.

Social structure

The mri are divided into a rigid structure of three castes: kel, sen, and kath. These are functional rather than hereditary castes, but each has a clearly defined role in their society, and the mri regard any change in those traditional functions as completely unacceptable.

Magnetic resonance microscopy

Magnetic resonance microscopy (MRM, µMRI) is magnetic resonance imaging (MRI) at a microscopic level down to the scale of 5-10 µm³. The first definition of MRM was MRI having voxel resolutions of better than 100 µm³.

Nomenclature

Magnetic resonance microscopy refers to very high resolution MRI imaging (down to nanometer scale, in some cases comparable with histopathology). The term MR microscopy is most widely used by the High Resolution Magnetic Resonance Imaging department at Duke University, headed by Dr. G. Allan Johnson, and the National High Magnetic Field Lab group at AMRIS, University of Florida/Florida State University.

Differences between MRI and MRM