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93rd Scripps National Spelling Bee
The 93rd Scripps National Spelling Bee was held at the ESPN Wide World of Sports Complex in Bay Lake, Florida. The finals were held on July 8, 2021, and televised on ESPN2 and ESPN. It was won by Zaila Avant-garde, the first African American to win the Scripps National Spelling Bee, and the second black person to do so (after Jody-Anne Maxwell of Jamaica). Field Due to the COVID-19 pandemic, the 2020 spelling bee had been canceled for the previous year. For 2021, the first round was held virtually on June 12 and had 209 spellers from the United States and several other countries. There were eleven finalists: ten Americans and one Bahamian, the first from his country to make it to the final. Competition Jill Biden, the current First Lady of the United States, First Lady of the United States, attended in person. She previously attended back in 2009. The competition went 18 rounds in total. The third-to-last speller was eliminated in round 14 after misspelling ''athanor'', a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ESPN Wide World Of Sports Complex
The ESPN Wide World of Sports Complex is a multi-purpose sports complex located at Walt Disney World Resort in Bay Lake, Florida, United States, near Orlando. The complex allows families to combine tournaments and competition with a visit to vacation destinations in the area. The complex includes nine venues and hosts numerous professional and amateur sporting events throughout the year. In reference to the weekly ABC Sports television show, '' Wide World of Sports'' (Disney bought ABC in 1996), the complex was originally known as Disney's Wide World of Sports Complex from 1997 until 2010, when it was rebranded with the name of the Disney-owned ESPN. The complex is a part of the sports tourism emerging market. The complex is mainly used for AAU tournaments; however, many prominent professional sporting events have taken place here, including the 2020 NBA Bubble, MLS is Back Tournament, 2016 Invictus Games, Pro Bowl skills competition from 2017 to 2020, 1997 U.S. Men's Cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neroli Oil
Neroli oil is an essential oil produced from the blossom of the bitter orange tree (''Citrus aurantium subsp. amara'' or ''Bigaradia''). Its scent is sweet, honeyed and somewhat metallic with green and spicy facets. Orange blossom is also extracted from the same blossom and both extracts are extensively used in perfumery. Orange blossom can be described as smelling sweeter, warmer and more floral than neroli. The difference between how neroli and orange blossom smell and why they are referred to with different names, is a result of the process of extraction that is used to obtain the oil from the blooms. Neroli is extracted by steam distillation and orange blossom is extracted via a process of enfleurage (rarely used nowadays due to prohibitive costs) or solvent extraction. Production The blossoms are gathered, usually by hand, in late April to early May. The oil is extracted by steam distillation. Tunisia, Morocco, and Egypt are the leading producers of neroli. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shedu
''Lama'', ''Lamma'', or ''Lamassu'' (Cuneiform: , ; Sumerian: lammař; later in Akkadian: ''lamassu''; sometimes called a ''lamassuse'') is an Assyrian protective deity. Initially depicted as a goddess in Sumerian times, when it was called ''Lamma'', it was later depicted from Assyrian times as a hybrid of a human, bird, and either a bull or lion—specifically having a human head, the body of a bull or a lion, and bird wings, under the name ''Lamassu''. In some writings, it is portrayed to represent a goddess. A less frequently used name is ''shedu'' (Cuneiform: , ; Sumerian: alad; Akkadian, ''šēdu''), which refers to the male counterpart of a ''lamassu''. ''Lamassu'' represent the zodiacs, parent-stars or constellations. Goddess Lama The goddess Lama appears initially as a mediating goddess who precedes the orans and presents them to the deities. The protective deity is clearly labelled as Lam(m)a in a Kassite stele unearthed at Uruk, in the temple of Ishtar, goddess t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heliconius
''Heliconius'' comprises a colorful and widespread genus of brush-footed butterflies commonly known as the longwings or heliconians. This genus is distributed throughout the tropical and subtropical regions of the New World, from South America as far north as the southern United States. The larvae of these butterflies eat passion flower vines (Passifloraceae). Adults exhibit bright wing color patterns which signal their distastefulness to potential predators. Brought to the forefront of scientific attention by Victorian naturalists, these butterflies exhibit a striking diversity and mimicry, both amongst themselves and with species in other groups of butterflies and moths. The study of ''Heliconius'' and other groups of mimetic butterflies allowed the English naturalist Henry Walter Bates, following his return from Brazil in 1859, to lend support to Charles Darwin, who had found similar diversity amongst the Galápagos finches. Model for evolutionary study ''Heliconius' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torticollis
Torticollis, also known as wry neck, is an extremely painful, dystonic condition defined by an abnormal, asymmetrical head or neck position, which may be due to a variety of causes. The term ''torticollis'' is derived . The most common case has no obvious cause, and the pain and difficulty in turning the head usually goes away after a few days, even without treatment in adults. Signs and symptoms Torticollis is a fixed or dynamic tilt, rotation, with flexion or extension of the head and/or neck. The type of torticollis can be described depending on the positions of the head and neck. * laterocollis: the head is tipped toward the shoulder * rotational torticollis: the head rotates along the longitudinal axis towards the shoulder * anterocollis: forward flexion of the head and neck and brings the chin towards the chest * retrocollis: hyperextension of head and neck backward bringing the back of the head towards the back A combination of these movements may often be observed. To ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euxinic
Euxinia or euxinic conditions occur when water is both wikt:anoxic, anoxic and wikt:sulfidic, sulfidic. This means that there is no oxygen (O2) and a raised level of free hydrogen sulfide (H2S). Euxinic bodies of water are frequently strongly stratified; have an oxic, highly productive, thin surface layer; and have anoxic, sulfidic bottom water. The word "euxinia" is derived from the Greek name for the Black Sea (Εὔξεινος Πόντος (''Euxeinos Pontos'')) which translates to "hospitable sea". Euxinic deep water is a key component of the Canfield ocean, a model of oceans during part of the Proterozoic, Proterozoic eon (a part specifically known as the Boring Billion) proposed by Donald Canfield, an American geologist, in 1998. There is still debate within the scientific community on both the duration and frequency of euxinic conditions in the ancient oceans. Euxinia is relatively rare in modern bodies of water, but does still happen in places like the Black Sea and certain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archedictyon
Archedictyon (from Greek ''Arche'' meaning first, original, ancient, primitive, or most basic and ''dictyo-'' meaning net or netlike, plural "archedictya") is a name given to a hypothetical scheme of wing venation proposed for the common ancestor of all winged insects. Description The nature of the archedictyon is an important consideration in the taxonomic classification of the large, primitive Palaeozoic insects known as Palaeodictyoptera and was used by Adolphe-Théodore Brongniart for this purpose as early as 1854. A National Museum of Natural History database for the study of ants, wasps, bees and termites describes the archedictyon as: ...the primitive original vein network characterizing the wings of many of the most ancient insect fossils (T-B, after Needham; Mackerras, in CSIRO); in Mastotermitidae and Hodotermitidae (Isoptera), the complex network or reticulum of irregular veinlets between the veins in the apical 3 quarters of both wings, including the anal lobe (Eme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolamite
A Rolamite is a technology for very low friction bearings developed by Sandia National Laboratories in the 1960s. It consists of two cylindrical rollers held captive in a channel by an S-shaped metal strip. The strip is under tension, which keeps the rollers pressed together with the strip between them. The rollers move linearly within the channel as they counter-rotate. During the motion each contact surface has the same surface velocity, which results in very low friction. The Rolamite can be used in various ways such as a component in switches, thermostats, valves, pumps, and clutches. Development The Rolamite was invented by Sandia engineer Donald F. Wilkes and was patented on June 24, 1969. It was invented while Wilkes was working on a miniature device to detect small changes in the inertia of a small mass. After testing an S-shaped metal foil, which he found to be unstable to support surfaces, the engineer inserted rollers into the S-shaped bends of the band, producing a mec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylloxera
Grape phylloxera is an insect pest of grapevines worldwide, originally native to eastern North America. Grape phylloxera (''Daktulosphaira vitifoliae'' (Fitch 1855) belongs to the family Phylloxeridae, within the order Hemiptera, bugs); originally described in France as ''Phylloxera vastatrix''; equated to the previously described ''Daktulosphaera vitifoliae'', ''Phylloxera vitifoliae''. The insect is commonly just called phylloxera (; from , leaf, and , dry). These almost microscopic, pale yellow sap-sucking insects, related to aphids, feed on the roots and leaves of grapevines (depending on the phylloxera genetic strain). On ''Vitis vinifera'', the resulting deformations on roots ("nodosities" and "tuberosities") and secondary fungal infections can girdle roots, gradually cutting off the flow of nutrients and water to the vine.Wine & Spirits Education Trust ''"Wine and Spirits: Understanding Wine Quality"'' pgs 2–5, Second Revised Edition (2012), London, Nymphs also for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
