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Clavus
Clavus may refer to: * Claudius Clavus (born 1388), 15th-century Danish cartographer * ''Clavus'' (gastropod), a genus of snails in the family Drilliidae * The Roman ''clavus'', a reddish-purple stripe on garments that distinguished members of the senatorial and equestrian orders; see laticlave and angusticlavia * A shooting pain in the forehead, associated with hysteria, also called ''clavus hystericus'' * Corn (medicine), type of callus formed on the toes * The plant disease ergot * The pseudo-tail of the Molidae (sunfish) * In Hemiptera, a usually narrow strip of the hemelytron An elytron (; ; , ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs ( Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometimes altern ... adjacent to the scutellum See also * Clav (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavus (gastropod)
''Clavus'' is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae. Description Apart from the general characteristics of the genera in the family Drilliidae, the species in the genus ''Clavus'' have a shell with peripheral tubercles, spines or wing-like processes. The aperture is rather large. The outer lip is produced below the sinus. The shell of ''Clavus'' is characterised by the following features:— Flat indefinite fasciole, indicated only by the curve of growth lines. A smooth subulate protoconch. An insinuation of the outer lip, near the base, like that of '' Strombus''. A major sculpture of prominent arched scales on the shoulder, and a minor sculpture of dense, microscopic, waved, spiral striae. Most species in this genus have a dorsal varix. But this is absent in a few species such as '' Clavus beckii'', '' Clavus humilis'' and '' Clavus pica''. G.W. Tryon correctly preserved the genus for smooth specimens with a short body whorl, long s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claudius Clavus
Claudius Clavus (Suartho) also known as ''Nicholas Niger'', ( da, Claudius Claussøn Swart), (born 14 September 1388), was a Denmark, Danish geographer sometimes considered to be the first Nordic countries, Nordic cartographer. It is believed that he was born in the village of Salling (Funen), Salling on the Danish island of Funen. He is commemorated by a plaque in the local ''Aagaarden''. In 141213 at the age of 25 he started to travel around Europe and appeared eleven years later (142324) in Rome. It is believed he travelled as far north as the 70°10' N. latitude, lat. In Rome he became friends with the cardinal Giordano Orsini (died 1438), Giordano Orsini and the pope's secretary Gian Francesco Poggio Bracciolini, who were among those working to update the old Roman cartography. Claudius contributed to a more realistic description of Nordic countries, in particular Iceland and Greenland, and was probably the first cartographer to put Greenland on a map. He is also known for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corn (medicine)
A corn or clavus (plural ''clavi'' or ''clavuses'') is a cone-shaped and often painful inwardly directed callus of dead skin that forms at a pressure point near a bone, or on a weight-bearing part of the body. When on the feet, corns can be so painful as to interfere with walking. The visible portion of the corn tends to be more-or-less round, but corns are defined by having a hard tapering root that is directed inward, and pressure on the corn pushes this root deeper into the flesh. (Thus the Latin term ''clavus'' 'nail'.) Pressure corns usually occur on thin or glabrous skin, glabrous (hairless and smooth) skin surfaces, especially on the Dorsal (anatomy), dorsal surface of toes or fingers, but corns triggered by an acute injury (such as a thorn) may occur on the thicker skin of the Anatomical terms of location#Hands and arms, palms or plantar, bottom of the feet (palmar corns and plantar corns). Pressure corns form when chronic pressure on the skin against an underlying bone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molidae
The Molidae comprise the family of the molas or ocean sunfishes, unusual fish whose bodies come to an end just behind the dorsal and anal fins, giving them a "half-fish" appearance. They are also the largest of the ray-finned bony fish, with the southern sunfish, ''Mola alexandrini'', recorded at in length and in weight. Description Molidae have the fewest vertebrae of any fish, with only 16 in ''Mola mola''. They also completely lack all caudal bones, and most of their skeleton is made of cartilage. No bony plates occur in the skin, which is, however, thick and dense like cartilage and is fairly rough. They also lack swim bladders. Molids mostly swim by using their anal and dorsal fins; the pectoral fins are probably just stabilizers. To steer, they squirt a strong jet of water out of their mouths or gills. They can also make minor adjustments in the orientation of the anal fin or the dorsal fin so as to control the amount of force it produces and the angle at which the for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laticlave
In Ancient Roman regalia, a ''laticlave'', or ''clavus'', was a broad stripe or band of purple on the fore part of the tunic, worn by senators as an emblem of office. The name ''laticlavia'' translates to "broad nail" and figuratively "broad stripe", in contrast to the "narrow stripe" (''angusticlavia'') which appeared on the tunics of lower social ranks. This ornament, according to some, was called ''clavus'' ("nail") as being set with little round plates of gold, or silver, like the heads of nails. Cantelius maintained that the clavus consisted of a kind of purple flowers, sewn upon the cloth. The garment is mentioned in Suetonius, as citizens singing songs of disapproval against Julius Caesar Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, and ... for him having offered the opportuni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angusticlavia
In ancient Rome, an ''angusticlavia'', ''angusticlavus'', or ''angustus clavus'' was a narrow-strip tunic (''tunica'') with two narrow vertical Tyrian purple stripes (''clavi''). The tunic was typically worn under the toga with the right side stripe visible. Usage and significance The ''angusticlavia'' was the tunic associated with the rank and office of the ''eques'', or equestrians, one of the two highest legal orders in aristocratic Rome. Order members were military men, often patricians (''patrici''), who served as the cavalry units in war. During times of peace they frequently served as personal assistants to Roman senators. Equestrians wore the ''angusticlavia'' under the ''trabea'', a short toga of distinctive form and color. They also wore equestrian shoes ('' calcei''), and a gold ring ('' anulus aureus''). The tunic's stripes were about an inch wide, which contrasted with the senator's ''laticlavus'', which bore three-inch wide stripes. The ''angusticlavias purple-hued ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hysteria
Hysteria is a term used colloquially to mean ungovernable emotional excess and can refer to a temporary state of mind or emotion. In the nineteenth century, hysteria was considered a diagnosable physical illness in women. It is assumed that the basis for diagnosis operated under the belief that women are predisposed to mental and behavioral conditions; an interpretation of sex-related differences in stress responses. In the twentieth century, it shifted to being considered a mental illness. Many influential people such as Sigmund Freud and Jean-Martin Charcot dedicated research to hysteria patients. Currently, most doctors practicing medicine do not accept hysteria as a medical diagnosis. The blanket diagnosis of hysteria has been fragmented into myriad medical categories such as epilepsy, histrionic personality disorder, conversion disorders, dissociative disorders, or other medical conditions. Furthermore, lifestyle choices, such as choosing not to wed, are no longer consid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ergot
Ergot ( ) or ergot fungi refers to a group of fungi of the genus ''Claviceps''. The most prominent member of this group is ''Claviceps purpurea'' ("rye ergot fungus"). This fungus grows on rye and related plants, and produces alkaloids that can cause ergotism in humans and other mammals who consume grains contaminated with its fruiting structure (called ''ergot sclerotium''). ''Claviceps'' includes about 50 known species, mostly in the tropical regions. Economically significant species include ''C. purpurea'' (parasitic on grasses and cereals), ''C. fusiformis'' (on pearl millet, buffel grass), ''C. paspali'' (on dallis grass), ''C. africana'' (on sorghum), and ''C. lutea'' (on paspalum). ''C. purpurea'' most commonly affects outcrossing species such as rye (its most common host), as well as triticale, wheat, and barley. It affects oats only rarely. ''C. purpurea'' has at least three races or varieties, which differ in their host specificity: *G1 — land grasses of open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemelytron
An elytron (; ; , ) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometimes alternatively spelled as "hemielytra"), and in most species only the basal half is thickened while the apex is membranous, but when they are entirely thickened the condition is referred to as "coleopteroid". An elytron is sometimes also referred to as a shard. Description The elytra primarily serve as protective wing-cases for the hindwings underneath, which are used for flying. To fly, a beetle typically opens the elytra and then extends the hindwings, flying while still holding the elytra open, though many beetles in the families Scarabaeidae and Buprestidae can fly with the elytra closed (e.g., most Cetoniinae; ). In a number of groups, the elytra are reduced to various degrees, (e.g., the beetle families Staphylinidae and Ripiphoridae), or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
