town (parish), Breckland district, administrative and historic county of Norfolk, England. The town lies on the edge of Thetford Chase Forest. It possesses the remains of a Cluniac priory, a ...
(from the article "organosulfur compound") ...active sulfur compounds were sulfonium salts, prepared in 1900. A number of sulfonium salts occur in nature; some examples include S-adenosyl methionine, a key biological source of the methyl group; ...
in Greek mythology, a Nereid loved by Zeus and Poseidon. When Themis (goddess of Justice), however, revealed that Thetis was destined to bear a son who would be mightier than ... [1 Related Articles]
(from the article "Aphrodite Terra") ...of two large curving ridges that partially surround a broad circular region of low-lying rugged terrain. Most of Aphrodite is formed by two broad upland regions, Ovda Regio in the ...
(from the article "Theudis") ...complete his mastery of the diocese of Spain by occupying Mauritania Tingitana, but he was defeated by the Roman imperial officers at Ceuta. He was in due course murdered at ...
the first Visigothic king of Spain (531-548), in the sense that he was the first to reside there permanently. An Ostrogoth, he had been sent to Spain with an army ... [2 Related Articles]
(from the article "Judaism") ...defined. There is no clear boundary line between mysticism and metaphysics, cosmology, theosophy (a system of thought claiming special insights or revelation into the divine nature), occultism, theurgy (the art ...
(from the article "Lothar (II)") In 855 Lothar had been forced by his father to marry Theutberga, a sister of Hicbert, the lay abbot of St. Maurice. Theutberga, however, remained childless, and from 857 the ...
(from the article "Fashions") ...a fashion venture involving the French designer Roland Mouret, who in October 2005 had quit his eponymous label owing to a creative fallout with his financial backers. After the surprise ...
(from the article "trichinosis") ...Pieces of muscle may be taken for microscopic examination, and cysts may then be seen in the muscle fibres. Treatment consists of the use of anti-inflammatory drugs for symptomatic relief; ...
water-soluble organic compound that is necessary for carbohydrate metabolism in both plants and animals. It carries out these functions in its active form, as a component of the coenzyme thiamin ... [13 Related Articles]
(from the article "metabolism") Pyruvate first reacts with the coenzyme of pyruvic acid decarboxylase (enzyme 1), thiamine pyrophosphate (TPP); in addition to carbon dioxide a hydroxyethyl-TPP-enzyme complex ("active acetaldehyde") is formed [34]. Thiamine is ...
(from the article "barbiturate") ...relieve insomnia. Short-acting barbiturates, such as pentobarbital and secobarbital, are used to overcome difficulty in falling asleep. Ultrashort-acting barbiturates, such as thiopental sodium and thiamylal, are used intravenously to induce ...
(from the article "gastropod") Minute to large, generally elaborately sculptured shells, common in mud flats and mangroves, many species sand dwellers, with 1 group of families (Thiaridae, Pleuroceridae, Melanopsidae) especially abundant and varied in ...
(from the article "Greek religion") ...(wands tipped with a pinecone and wreathed with grapevine or ivy leaves) and known as maenads (literally "mad women"), were reputed to wander in thiasoi (revel bands) ...
(from the article "Skadi") in Norse mythology, the giant wife of the sea god Njord. In order to avenge the death of her father, the giant Thiazi, Skadi took up arms and went to ...
(from the article "pharmaceutical industry") ...from cardiovascular diseases and stroke, one of the most important developments was the discovery of effective treatments for hypertension (high blood pressure)-i.e., the discovery of thiazide diuretics. For decreasing death ...
any of three organic compounds of the heterocyclic series, having molecular structures that include a ring of four atoms of carbon and one each of nitrogen and sulfur. [1 Related Articles]
any of a class of organic compounds of the heterocyclic series characterized by a ring structure composed of three carbon atoms, one nitrogen atom, and one sulfur atom. This ring ... [1 Related Articles]
(from the article "sports") ...by the ballet, which developed in France during this period, choreographers trained horses to perform graceful movements rather than to win races. French and Italian fencers such as the famed ...
(from the article "Cape Town") Much of Cape Town's early architecture reflected prototypes from the Netherlands that were modified for the region. Characteristics included flat roofs, projecting porches, and distinctive gables. Louis-Michel Thibault, a French ...
(from the article "Blois") ...(d. 866), duke of the entire region between the Seine and Loire rivers and ancestor of the French royal house of Capet, Blois was an appointive viscounty. About 940 the ...
(from the article "Crusades") ...levied on all clerical incomes-later to become a precedent for systematic papal income taxes-and Fulk of Neuilly, a popular orator, was commissioned to preach. At a tournament held by Thibaut ...
(from the article "Italy") ...money and manpower to oppose Frederick, who, in turn, warned his fellow rulers of the danger that these efforts posed. The papacy accused Frederick of failing to support the Crusade ...
(from the article "France") ...its greatest strength under Theobald IV (the Great; Theobald II of Champagne, 1125-52), who was a formidable rival of Kings Louis VI and Louis VII. The main lands were divided ...
German jurist and leader of the philosophical school that maintained the tradition of natural law in a spirit of moderate rationalism. He is remembered chiefly because his call for the ... [1 Related Articles]
city, seat (1808) of Lafourche parish, southeastern Louisiana, U.S., on Bayou Lafourche, 49 miles (79 km) southwest of New Orleans. The area was occupied by the Colapissa Indians in the ...
(from the article "Vietnam War") ...Strikes and demonstrations by Buddhists in Saigon and Hue were met with violence by the army and Nhu's security forces and resulted in numerous arrests. The following month a Buddhist ...
(from the article "muscle") In the middle portion of the thick filament, the molecules are assembled in a tail-to-tail fashion. Along the rest of the filament, they are arranged head to tail. The tail ...
(from the article "murre") The thick-billed, or Brunnich's, murre (U. lomvia), with a somewhat heavier beak, often nests farther north, to Ellesmere Island and other islands within the Arctic Circle, where the common murre ...
any member of a family of elongated, wasplike flies (order Diptera) that have a head thicker than the thorax. They are brownish in colour and often have yellow markings. Most ...
(from the article "coal mining") Coal seams as much as five metres thick can be mined in a single "lift" by the longwall method, and seams up to seven metres thick have been extracted by ...
(from the article "opossum") The thick-tailed opossum, or little water opossum (Lutreolina crassicaudata), of South America east of the Andes is found chiefly along watercourses but may enter cities. As long as 70 cm, ...
(from the article "Processing additives and their uses") Stabilizers and thickeners have many functions in foods. Most stabilizing and thickening agents are polysaccharides, such as starches or gums, or proteins, such as gelatin. The primary function of these ...
any of about 35 species constituting the songbird family Pachycephalidae (order Passeriformes), considered by some authors to be a subfamily of Muscicapidae. Thickheads have heavy-looking, seemingly neckless foreparts and are ... [1 Related Articles]
any of numerous shorebirds that constitute the family Burhinidae (order Charadriiformes). The bird is named for the thickened intertarsal joint of its long, yellowish or greenish legs; or, alternatively, for ... [2 Related Articles]
American painter and printmaker who is perhaps best known for his crisp American still lifes of such items as foods and cosmetics. He is often incorrectly associated with American Pop ...
(from the article "police") ...a commodity, available to anyone who had sufficient resources. In addition, victims of theft who could not recover their property offered rewards for its return, often resorting to hiring "thieftakers." ...
Australian children's author (b. Nov. 16, 1920, Eudunda, S.Aus., Australia-d. Sept. 4, 2006, Brisbane, Australia), published more than 100 books, including poetry, plays, and historical works, but was best known ...
(from the article "Palladio, Andrea") Palladio further developed the basic plan of his Palazzo Iseppo Porto in the Palazzo Thiene (c. 1545-50), Vicenza, the largest and most problematical of his palace designs, of which only ...
(from the article "Palladio, Andrea") At the Villa Thiene (c. 1550) at Quinto, he started to build a grandiose house planned on the lines of his reconstruction of a Roman villa shown in the Quattro ...
(from the article "ecology") While some ecologists were studying the dynamics of communities and populations, others were concerned with energy budgets. In 1920 August Thienemann, a German freshwater biologist, introduced the concept of trophic, ...
(from the article "heterocyclic compound") ...although these compounds are usually stable and some of them have found practical application. Of the seven-membered ring compounds, one-heteroatom heterocycles-azepines, oxepines, and thiepines-and their derivatives are the most comprehensively ...
count of Flanders (1128-68), son of Thierry II, duke of Upper Lorraine, and Gertrude, daughter of Robert I the Frisian, count of Flanders. He contested the county of Flanders with ... [4 Related Articles]
French historian whose discursive method of presenting history in picturesque and dramatic terms makes him one of the outstanding Romantic historians. [1 Related Articles]
French statesman, journalist, and historian, a founder and the first president (1871-73) of the Third Republic. His historical works include a 10-volume Histoire de la revolution francaise and a 20-volume ... [10 Related Articles]
city, west-central Senegal. Situated 35 miles (56 km) east of Dakar, it is an important transportation centre, serving as the junction of the eastern Dakar-Niger River railway and the northern ...
(from the article "heterocyclic compound") Azetidine, oxetane, and thietane-four-membered rings containing, respectively, one nitrogen, oxygen, or sulfur atom-are prepared by nucleophilic displacement reactions similar to those used to prepare the corresponding three-membered rings.
also spelled Dietmar, or Dithmar bishop of Merseburg and chronicler whose history of the three Ottos and Henry II, Saxon kings of Germany and Holy Roman emperors, is an important ...
(from the article "Vietnamese literature") ...but then, going backward, ideogram by ideogram, became poems in Chinese, switching languages on the reversal. Perhaps the most extraordinary proponent of this kind of virtuoso play was the emperor ...
any protozoan of the ciliate order Thigmotrichida, found living parasitically in and about the gills or in the mantle cavity of bivalve mollusks. On the anterior part of the cell ...
(from the article "tropism") ...alteration. Forms of tropism include phototropism (response to light), geotropism (response to gravity), chemotropism (response to particular substances), hydrotropism (response to water), thigmotropism (response to mechanical stimulation), traumatotropism (response to ...
American actress (b. Dec. 22, 1948, Joliet, Ill.-d. March 12, 2003, Los Angeles, Calif.), worked as a character actress on stage, screen, and television. Thigpen was best known for her ...
(from the article "heterocyclic compound") Molecules containing thiirane rings are more bactericidal than those containing oxirane rings, and some thiirane derivatives have found application as tuberculostats (drugs that inhibit the growth of tuberculosis-causing bacteria), whereas ...
town, south-central Kenya. It lies in the highland region just northeast of the capital city of Nairobi, at an elevation of 4,943 feet (1,507 metres) above sea level. Situated in ...
small, bell-shaped implement designed to protect the end of the finger when sewing. Among the earliest known thimbles, dating from before AD 79, were those made of bronze and found ...
(from the article "coneflower") ...Rudbeckia, has about 25 annual, biennial, and perennial species with simple or segmented leaves, yellow ray flowers, and brown or black disk flowers. Black-eyed Susan (R. hirta), thimble-flower (R. bicolor), ...
organic compound used as an antiseptic for the skin and mucous membranes, sometimes marketed under the trade name Merthiolate. It is related to merbromin (Mercurochrome) and nitromersol (Metaphen). Thimerosal disinfects ...
(from the article "sewing machine") An early sewing machine was designed and manufactured by Barthelemy Thimonnier of France in 1841 to mass-produce uniforms for the French Army, but rioting tailors destroyed the machines. Thimonnier's design, ...
capital of Bhutan. The city, situated in the west-central part of the country, is in the Himalaya Mountains on the Raidak (also called Thimphu, or Wong) River at about 7,000 ... [5 Related Articles]
(from the article "muscle") The thin filaments contain three different proteins-actin, tropomyosin, and troponin. The latter is actually a complex of three proteins.
(from the article "advanced ceramics") ...In spin-coating a suspension of ceramic particles is deposited on a rapidly rotating substrate, with centrifugal force distributing the particles evenly over the surface. On the other hand, truly thin ...
(from the article "solids, mechanics of") The first steps in the theory of thin shells were taken by Euler in the 1770s; he addressed the deformation of an initially curved beam as an elastic line and ...
(from the article "light") Observable interference effects are not limited to the double-slit geometry used by Thomas Young. The phenomenon of thin-film interference results whenever light reflects off two surfaces separated by a distance ...
(from the article "liquid crystal display") ...monitors consists of an array of 640 by 480 picture elements, which for a colour LCD translates to 921,600 individual pixels. Excellent images can be built up from arrays of ...
in analytical chemistry, technique for separating dissolved chemical substances by virtue of their differential migration over glass plates or plastic sheets coated with a thin layer of a finely ground ... [4 Related Articles]
(from the article "property law") ...may be structured. What distinguishes property law from other kinds of law is that property law deals with the relationships between and among members of a society with respect to ...
in medieval Scandinavia, the local, provincial, and, in Iceland, national assemblies of freemen that formed the fundamental unit of government and law. Meeting at fixed intervals, the things, in which ... [4 Related Articles]
(from the article "metaphysics") ...Thus, it is possible to be certain of the world in its general structure but only insofar as it is an experienced, or phenomenal, world-that is, a world known by ...
lake, southwestern Iceland, 20 miles (32 km) east of Reykjavik. The lake is about 9 miles (14 km) long and up to 6 miles (10 km) wide and reaches a ...
historical site, southwestern Iceland, on the northern shore of Thingvallavatn. From 930 to 1798 it was the annual meeting place of the Althing (Parliament). Though little remains of any of ... [2 Related Articles]
(from the article "Bhutan") ...(2004 est.): 700,000 (excluding more than 100,000 refugees in Nepal) | Capital: Thimphu | Head of state: Druk Gyalpo (King) Jigme Singye Wangchuk | Head of government: Prime Ministers Lyonpo ...
(from the article "fruit farming") Removal of flowers or young fruit (thinning) is done to permit the remaining fruits to grow more rapidly and to prevent development of such a large crop that the plant ...
(from the article "ice in lakes and rivers") In the spring, when average daily air temperatures rise above the freezing point, ice begins to decay. Two processes are active during this period: a dimensional thinning and a deterioration ...
(from the article "South Africa") In September a Durban court struck from the roll the corruption case against Zuma, according to which he was alleged to have accepted a bribe from Thint, a French arms ...
(from the article "organosulfur compound") Thiols form sulfides and thioesters in reactions analogous to those of alcohols. They react readily with aldehydes and ketones to form thioacetals and thioketals, respectively. Thioacetals and thioketals are more ...
(from the article "organosulfur compound") The thiocarbonyl functional group (&singlehorzbond;C(&doublehorzbond;S)&singlehorzbond;), analogous to the carbonyl group, is found in thioaldehydes and thioketones, as well as in a variety of compounds with nitrogen or oxygen (or both) ...
(from the article "bacteria") ...europaea oxidizes ammonia (NH4+) to nitrite, and Nitrobacter winogradsky oxidizes nitrite to nitrate. Thiobacillus oxidizes thiosulfate and elemental sulfur to sulfate, and
(from the article "bacteria") ...bacterium is T. ferrooxidans. When coal seams are exposed to air through mining operations, the pyritic ferrous sulfide deposits are attacked by T. ferrooxidans ...
(from the article "accelerator") ...carbonate were used until early in the 20th century, when the superiority of aniline, an organic compound, was discovered. Despite its toxicity, aniline was used as an accelerator for several ...
(from the article "organosulfur compound") The thiocarbonyl functional group (&singlehorzbond;C(&doublehorzbond;S)&singlehorzbond;), analogous to the carbonyl group, is found in thioaldehydes and thioketones, as well as in a variety of compounds with nitrogen or oxygen (or both) ...
(from the article "organosulfur compound") ...as such; e.g., ethyl methyl sulfide is CH3SC2H5. In molecules with other functional groups of higher priority, the sulfide group is designated by thio- (as in thiodiacetic acid, HO2CCH2SCH2CO2H) or ...
(from the article "organosulfur compound") ...of a pi bond in thioketones makes these compounds reactive in Diels-Alder reactions and related cycloaddition reactions. Similar to carbonyl compounds, thioketones can also undergo enolization (thioenolization), giving isomeric enethiols, ...
(from the article "organosulfur compound") Thiols form sulfides and thioesters in reactions analogous to those of alcohols. They react readily with aldehydes and ketones to form thioacetals and thioketals, respectively. Thioacetals and thioketals are more ...
(from the article "organosulfur compound") ...double bond (pi bond) between carbon and sulfur uses orbitals of quite different sizes (2p on carbon and 3p on sulfur), which do not overlap well. The parent thiocarbonyl compound, ...
(from the article "organosulfur compound") Thiols form sulfides and thioesters in reactions analogous to those of alcohols. They react readily with aldehydes and ketones to form thioacetals and thioketals, respectively. Thioacetals and thioketals are more ...
(from the article "organosulfur compound") The thiocarbonyl functional group (&singlehorzbond;C(&doublehorzbond;S)&singlehorzbond;), analogous to the carbonyl group, is found in thioaldehydes and thioketones, as well as in a variety of compounds with nitrogen or oxygen (or both) ...
any of a class of organic chemical compounds similar to the alcohols and phenols but containing a sulfur atom in place of the oxygen atom. Thiols are among the odorous ... [4 Related Articles]
(from the article "organosulfur compound") Thiols and thiol-derived compounds have several important roles in biology. As thiolate, RS−, they can function as bases, as ligands (e.g., in the binding of metals, as in hemoglobin), and ...
(from the article "metabolism") ...step [25] enables the energy invested in step [21] to be conserved. The beta-ketoacyl coenzyme A that is the product of reaction [24] is split, not by water but by ...
town, Moselle departement, Lorraine region, northeastern France, on the canalized Moselle River, near the Luxembourg border. It has remains of a 13th-century castle, built by the counts of Luxembourg. Formerly ...
(from the article "carboxylic acid") Treatment of a carboxylic acid with thionyl chloride, SOCl2 (often in the presence of an amine such as pyridine, C5H5N), converts the carboxyl group to the corresponding acyl chloride (RCOOH ...
the simplest sulfur-containing aromatic compound, with molecular formula C4H4S, which closely resembles benzene in its chemical and physical properties. It occurs with benzene in coal tar, from which source it ... [3 Related Articles]
(from the article "organosulfur compound") ...as a substituent, as in mercaptoacetic acid, HSCH2COOH. A third naming system uses the prefix thio- in front of the name of the corresponding oxygen compound, as, for example, thiophenol ...
(from the article "heterocyclic compound") Positively charged ions (cations) of pyrylium and thiopyrylium are the parent six-membered, aromatic, monocyclic oxygen and sulfur compounds of their respective groups.
(from the article "sulfur bacterium") ...also corrodes concrete and steel. Desulfovibrio desulficans reduces sulfates in waterlogged soils and sewage to hydrogen sulfide, a gas with the rotten egg odour so common to such places. Thiothrix, ...
an organic compound that resembles urea (q.v.) but contains sulfur instead of oxygen; i.e., the molecular formula is CS(NH2)2, while that of urea is CO(NH2)2. Like urea, it can be ... [3 Related Articles]
