All articles starting with E
17,681 articles
Estrone
Estrone (E1) is one of the major mammalian estrogens, an aromatized C18 steroid produced by the ovaries, placenta, and adipose tissue, and the first estrogen isolated, crystallized in 1929.
Estrone Sulfate
Estrone sulfate, also called estrone 3-sulfate, is the most abundant circulating estrogen in humans, serving as an inactive reservoir converted to estrone and estradiol in target tissues.
Estrous cycle
The estrous cycle is the recurring reproductive cycle of female mammals other than humans and some primates, driven by hormones and marked by receptivity to mating rather than menstruation.
Estrous synchronization
Estrous synchronization (estrus synchronization) coordinates livestock heat periods with progesterone, prostaglandin, and GnRH protocols, enabling timed artificial insemination, uniform calving, and 30–65% timed-AI pregnancy rates in cattle.
Estrus
Estrus, also called heat or oestrus, is the recurring phase in which females of nearly all mammals except the higher primates become sexually receptive and can conceive, triggered by surges of estrogen.
Estrus synchronization
Estrus synchronization is a reproductive management method using hormones like GnRH and prostaglandin to group herd estrus into a short window, concentrating breeding and artificial insemination.
Estuaire
Estuaire, Gabon's northwestern province around the Komo estuary, chef-lieu Libreville (Akanda since 2022), area 20,740 km2, holds over half of Gabon's population; named from Portuguese gabao.
Estuaire du Rio Del Rey
Estuaire du Rio Del Rey: a 165,000-hectare transboundary Ramsar wetland in Cameroon's Southwest Region on the Gulf of Guinea, designated 20 May 2010, holding about 10% of West African mangroves and habitat for the giant frog and manatee.
Estuans intrinsecus
Estuans intrinsecus, also known as the Confession of Golias, is a famous twelfth-century Latin goliardic poem by the anonymous Archpoet, written at Pavia in 1163 and later set by Carl Orff in his Carmina Burana.
Estuaries of New Zealand
New Zealand's estuaries are partly enclosed coastal waters where rivers meet the sea; about 301 exist, formed about 6,500 years ago, with Kaipara Harbour the largest.
Estuaries of South Africa
The estuaries of South Africa are about 290 river-mouth systems, mostly small and intermittently closed by sandbars; Lake St Lucia alone holds over half the country's estuarine area.
Estuarine conservation area
An estuarine conservation area is a legally protected estuary, or part of one, managed to conserve habitats, water quality, and the fish and wildlife that depend on it.
Estuary
Estuary: a semi-enclosed coastal water body, also called a ria or drowned river valley, where seawater is measurably diluted by fresh river water; brackish nurseries of the sea supporting most U.S. fish catches.
Estuary English
Estuary English (EE): name coined by David Rosewarne in 1984 for south-east English accent features between Cockney and RP; typified by T-glottalling, disputed by linguists as a social construct rather than a definable accent.
Estuary of the St. Lawrence
The Estuary of the St. Lawrence is the 400-km brackish section of the St. Lawrence River in Quebec, running from Île d'Orléans near Quebec City to Pointe-des-Monts.
Estudiantes de La Plata
Estudiantes de La Plata, nicknamed Pincha and León, is an Argentine sports club from La Plata founded in 1905, whose football team has won the Copa Libertadores four times.
Estuquiña culture
The Estuquiña culture was an archaeological culture of the Late Intermediate Period in southern Peru's Moquegua valley, from about 1200 until the Inka conquest around 1475.
Esuberaprost
Esuberaprost (beraprost-314d, APS-314D, CTO-1681) is the active single enantiomer of beraprost, an oral prostacyclin IP receptor agonist developed by United Therapeutics for pulmonary arterial hypertension; its phase 3 BEAT trial missed its primary endpoint.
Esukārī
Esukārī (欝瘦歌逻) was a brahmin who visited the Buddha at Jetavana near Sāvatthī to question him on caste, service, and wealth, then became his lay follower for life.
Eswarasamy
Eswarasamy, born 1976, in Udumalpet, Tamil Nadu, is a Dravida Munnetra Kazhagam politician elected from the Pollachi constituency to the 18th Lok Sabha in 2024.
Eswatini
Eswatini, formerly Swaziland until the 2018 renaming, is a landlocked southern African kingdom of about 1.2 million people, the last absolute monarchy in Africa, ruled by King Mswati III since 1986 with political parties banned since 1973.
ESWEEK
ESWEEK (Embedded Systems Week) is an annual event, created in 2005, that co-locates the embedded systems conferences CASES, CODES+ISSS, and EMSOFT with symposia, workshops, tutorials, and a PhD forum.
Eswin Computing
Eswin Computing (奕斯伟计算) is a Beijing-based fabless semiconductor company founded in 2019 by BOE co-founder Wang Dongsheng, designing RISC-V chips for smart terminals and embodied AI, and filing for a Hong Kong listing.
ESWIN Material
Xi'an ESWIN Material Technology Co., Ltd. (奕斯伟材料) is a Chinese manufacturer of 12-inch silicon wafers for integrated circuits, founded in 2016 and headquartered in Xi'an.
Eszopiclone
Eszopiclone (Lunesta), the S-enantiomer of zopiclone, is a cyclopyrrolone nonbenzodiazepine hypnotic acting at the GABA_A receptor; FDA-approved 2004 for insomnia, half-life about 6 hours, boxed warning for complex sleep behaviors.
Esztergom
Esztergom (Gran, Strigonium), a Hungarian city of about 28,000 on the Danube opposite Štúrovo; earliest royal seat until 1249, seat of the primate, home of Hungary's largest church, the 100 m Esztergom Basilica, and the Suzuki car plant.
Et cetera
Et cetera (etc.), Latin for "and the rest," entered English in the early 15th century; older texts abbreviated it &c., and style guides discourage it in formal writing and after "for example."
Et moi, et moi, et moi
"Et moi, et moi, et moi" is a 1966 French song by Jacques Dutronc, with lyrics by Jacques Lanzmann, and a hit of the summer of 1966.
Et tu, Brute?
Et tu, Brute? ("and you, Brutus?") is the Latin line Shakespeare gave Julius Caesar in Julius Caesar (1599), Act 3 Scene 1; ancient sources give Greek "kai su, teknon" or silence, and the phrase predates Shakespeare in Elizabethan drama.
ET-LDHCM
ET-LDHCM, an Indian DRDO hypersonic cruise missile program, was flight-tested in July 2025 and is reported at Mach 8 with a 1,500 km strike range under Project Vishnu.