搜尋結果
Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons Free media repository. MediaWiki Wiki software development. Meta-Wiki Wikimedia project coordination. Wikibooks Free textbooks and manuals. Wikidata Free knowledge base.
UNICEF (/ˈjuːniˌsɛf/ YOO-nee-SEF), originally called the United Nations International Children's Emergency Fund in full, now officially United Nations Children's Fund,[a] is an agency of the United Nations responsible for providing humanitarian and developmental aid to children worldwide.[3][4] The organization is one of the most widely ...
- UNICEF
- Active 11 December 1946; 76 years ago (as United Nations International Children's Emergency Fund)
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [10] [11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...
Adrenochrome is a chemical compound produced by the oxidation of adrenaline (epinephrine). It was the subject of limited research from the 1950s through to the 1970s as a potential cause of schizophrenia. While it has no current medical application, the semicarbazide derivative, carbazochrome, is a hemostatic medication. Despite this compound ...
- 115–120 °C (239–248 °F; 388–393 K) (decomposes)
- 3.264 g/cm³
- C₉H₉NO₃
- 179.175 g·mol−1
Synonyms. Sus hydrochaeris Linnaeus, 1766. The capybara [a] or greater capybara ( Hydrochoerus hydrochaeris) is a giant cavy rodent native to South America. It is the largest living rodent [2] and a member of the genus Hydrochoerus. The only other extant member is the lesser capybara ( Hydrochoerus isthmius ).
Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a female, the testicles in a male. In response to the signals, the gonads produce hormones that stimulate libido and the growth ...
Drake (musician) Aubrey Drake Graham (born October 24, 1986), known mononymously as Drake, is a Canadian rapper, singer and actor. An influential figure in contemporary popular music, he has been credited with popularizing R&B sensibilities in hip hop artists.
