key sequence period

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• Period (gene) — period serina Identifiers Organism D. melanogaster Symbol per Entrez …   Wikipedia

• Key signature — For use in cryptography, see Key signature (cryptography). Key signature A major / F♯ minor with three sharps placed after the clef. In musical notation, a key signature is a series of sharp or …   Wikipedia

• Key (music) — Scale degree names[1] (C major scale). In music theory, the term key is used in many different and sometimes contradictory ways. A common use is to speak of music as being in a specific key, such as in the key of C major or in the key of F sharp …   Wikipedia

• Key frame — A key frame in animation and filmmaking is a drawing which defines the starting and ending points of any smooth transition. They are called frames because their position in time is measured in frames on a strip of film. A sequence of keyframes… …   Wikipedia

• Sequence alignment — In bioinformatics, a sequence alignment is a way of arranging the sequences of DNA, RNA, or protein to identify regions of similarity that may be a consequence of functional, structural, or evolutionary relationships between the sequences.[1]… …   Wikipedia

• Sequence (music) — For the unrelated genre of Gregorian chant, see Sequence (poetry). For the means of triggering musical notes, see Music sequencer. Sequence ascending by step   …   Wikipedia

• Period 1 element — A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… …   Wikipedia

• Derived unique key per transaction — In cryptography, Derived Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore, if a derived key is compromised, future and past transaction …   Wikipedia

• Surrogate key — A surrogate key in a database is a unique identifier for either an entity in the modeled world or an object in the database. The surrogate key is not derived from application data. Definition Two definitions of a surrogate appear in the… …   Wikipedia

• Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …   Universalium

• Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …   Universalium