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Half-life is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo, or how long stable atoms survive, radioactive decay. The term is also used more generally to characterize any type of exponential or non-exponential decay. For example, the medical sciences refer to the biological half-life of drugs and other chemicals in the human body. The converse of half-life is doubling time.
The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet.
In Norse mythology, Ragnarök is a series of events, including a great battle, foretold to lead to the death of a number of great figures, natural disasters and the submersion of the world in water. After these events, the world will resurface anew and fertile, the surviving and returning gods will meet and the world will be repopulated by two human survivors. Ragnarök is an important event in Norse mythology and has been the subject of scholarly discourse and theory in the history of Germanic studies.
A troll is a class of being in Norse mythology and Scandinavian folklore. In Old Norse sources, beings described as trolls dwell in isolated rocks, mountains, or caves, live together in small family units, and are rarely helpful to human beings.
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An electric field surrounds an electric charge, and exerts force on other charges in the field, attracting or repelling them. Electric fields are created by electric charges, or by time-varying magnetic fields. Electric fields and magnetic fields are both manifestations of the electromagnetic force, one of the four fundamental forces of nature.
Black supremacy or black supremacism is a racial supremacist belief which maintains that black people are superior to people of other races. The term has been used by the Southern Poverty Law Center (SPLC), an American legal advocacy organization, to describe several fringe religious groups in the United States.
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Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans.
Dream pop is a subgenre of alternative rock and neo-psychedelia that developed in the 1980s. The style is typified by a preoccupation with sonic texture and atmosphere as much as melody. It often overlaps with the related genre of shoegazing, and the two genre terms have at times been used interchangeably.
A formation or geological formation is the fundamental unit of lithostratigraphy. A formation consists of a certain amount of rock strata that have a comparable lithology, facies or other similar properties. Formations are not defined by the thickness of their rock strata; therefore the thickness of different formations can vary widely.
Medical Subject Headings (MeSH) is a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences. It serves as a thesaurus that facilitates searching. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE/PubMed article database and by NLM's catalog of book holdings. MeSH is also used by ClinicalTrials.gov registry to classify which diseases are studied by trials registered in ClinicalTrials.
The following is a defined list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple or compound. The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article.
Dark fantasy is a subgenre of fantasy literary, artistic, and cinematic works that incorporate darker and frightening themes of fantasy. It also often combines fantasy with elements of horror or has a gloomy, dark tone, or a sense of horror and dread.
In the Hebrew Bible, the Twelve Tribes of Israel or Tribes of Israel descended from the 12 sons of the patriarch Jacob and his two wives, Leah and Rachel, and two concubines, Zilpah and Bilhah.
Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relative to the anatomical position of the joints. Anatomists use a unified set of terms to describe most of the movements, although other, more specialized terms are necessary for describing the uniqueness of the movements such as those of the hands, feet, and eyes.
Metadata is "data that provides information about other data". In other words, it is "data about data." Many distinct types of metadata exist, including descriptive metadata, structural metadata, administrative metadata, reference metadata and statistical metadata.
Anatomical terminology is a form of scientific terminology used by anatomists, zoologists, and health professionals such as doctors.
Al-Masdar News is an online newspaper founded by Leith Abou Fadel. Al-Masdar is Arabic for "the source". Al-Masdar's coverage focuses largely on conflict zones in the Middle East: Syria, Yemen, and Iraq. Al-Masdar has been described as being favorable to President Bashar al-Assad.
References
- ↑ "GlobIZ search". Global Information System on Pyraloidea. Retrieved 2011-09-29.
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