A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9 acetyl-S-ACP ... Acoemeti acetyl-S-ACP (from the article "metabolism") ...ACP-SH is involved in all of the reactions leading to the synthesis of a fatty ... acetylation (from the article "poison") Two types of conjugations, acetylations and methylation, do not enhance the excretion of the parent ... acetylcholine (ACh), an ester of choline and acetic acid that is the transmitter substance at many ... [20 Related Articles] acetylcholine receptor (from the article "muscle") Acetylcholine receptors are ion channels that span the postsynaptic membrane, and they have extracellular, intramembranous, ... acetylcholinesterase (from the article "acetylcholine") ...and a change in the nature of a generator potential results. The effects of successive ... acetylene the simplest and best-known member of the hydrocarbon series containing one or more pairs of ... [14 Related Articles] acetylide (from the article "acetylene") The hydrogen atoms in acetylene can be replaced by metallic elements to form acetylides-e.g., acetylides ... Acevedo Diaz, Eduardo writer and politician, considered Uruguay's first novelist. acey-deucy (from the article "red dog") In one version of red dog-also known as yablon, acey-deucey, and between the sheets-each player ... Achaea nomos (department) and historic region of Greece on the north coast of ... [4 Related Articles] Achaean any of the ancient Greek people, identified in Homer, along with the Danaoi and the ... [1 Related Articles] Achaean League 3rd-century-BC confederation of the towns of Achaea in ancient Greece. The 12 Achaean cities of ... [11 Related Articles] Achaemenes son of the Achaemenid king Darius I of Persia. Achaemenes eponymous ancestor of the Persian Achaemenid dynasty; he was the father of Teispes (Chishpish) and ... [1 Related Articles] Achaemenian Dynasty (559-330 BC), ancient Iranian dynasty whose kings founded and ruled the Achaemenian Empire. Achaemenes (Persian ... [29 Related Articles] Achaemenid Dynasty the Persian 27th dynasty of Egypt (525-404 BC), founded by Cambyses II of Persia and ... Achaeus (from the article "Antiochus III") The son of Seleucus II, Antiochus succeeded his brother Seleucus III as king. He retained ... Achagua South American Indian people of Venezuela and eastern Colombia. They speak a language of the ... [1 Related Articles] achalasia (from the article "esophagus") Disorders of the esophagus include ulceration and bleeding; heartburn, caused by gastric juices in the ... Achariaceae (from the article "Malpighiales") Achariaceae contains 30 genera and 145 species of shrubs to trees, or rarely climbing herbs, ... Achatina (from the article "gastropod") In some places, introductions of Achatina and Helix have resulted in damage to crops and ... Achatina achatina (from the article "gastropod") ...and forest-litter snails (Stenopylis, Punctum) are less than one ... Achatinacea (from the article "gastropod") ...altered in sluglike forms; about 18,000 species.Suborder HolopodopesA group of 4 superfamilies.Superfamily AchatinaceaBesides the giant ... Achatinellacea (from the article "gastropod") ...into mantle cavity (part of the viscera) near anterior margin of lung after ureter passes ... Ache nomadic South American Indian people living in eastern Paraguay. The Ache speak a Tupian dialect ... [3 Related Articles] Acheampong, Ignatius Kutu Ghanaian army officer, who, after leading a military revolt that overthrew the government of Kofi ... [3 Related Articles] Achebe, Chinua prominent Igbo (Ibo) novelist acclaimed for his unsentimental depictions of the social and psychological disorientation ... [1 Related Articles] Acheiropoietos, Church of the (from the article "Western architecture") The ecclesiastical architecture of the East is more varied, partly as a result of differences ... Achelous River one of the longest rivers in Greece, rising in the Pindus Mountains of central Epirus ... Achen Pass (from the article "Bavarian Alps") ...to the north its gentle slopes allow the grazing of cattle. The mountains hold lignite ... Achenbach, Andreas landscape painter, a pioneer of the German realist school. He studied at the Dusseldorf academy ... Achenbach, Oswald landscape painter of the Dusseldorf school who is distinguished for his colourful renderings of the ... achene dry, one-seeded fruit lacking special seams that split to release the seed. The seed coat ... [5 Related Articles] Acheng former city, central Heilongjiang sheng (province), far northeastern China. In 2006 it ... Acheron river in Thesprotia in Epirus, Greece, that was thought in ancient times to go to ... Achery, Jean-Luc d' (from the article "canon law") ...code. About 800 the Hadriana and the Hispana were developed into a systematic whole, the ... Acheson process (from the article "refractory") Silicon carbide (SiC) ceramics are made by a process referred to as reaction bonding, invented ... Acheson, Dean U.S. secretary of state (1949-53) and adviser to four presidents, who became the principal creator ... [4 Related Articles] Acheson, Edward Goodrich American inventor who discovered the abrasive Carborundum and perfected a method for making graphite. [3 Related Articles] Acheson, Lila Bell American publisher and philanthropist who, with her husband, DeWitt Wallace, created and published [2 Related Articles] Acheson-Lilienthal Report (from the article "international relations") ...press, Congress, and the military against any giveaway of atomic secrets, Byrnes appointed a committee ... Acheulean industry first standardized tradition of toolmaking of Homo erectus and early Homo sapiens. Named for the ... [16 Related Articles] achievement (from the article "heraldry") The term achievement, properly armorial achievement, means the whole display showing shield, helmet, crest, mantling, ... achievement motivation (from the article "motivation") Achievement was initially recognized as an important source of human motivation by the American psychologist ... achievement test (from the article "psychological testing") ...distant future behaviour (e.g., success in school), such a device is called an aptitude test. ... Achill Island mountainous island off the west coast of Ireland. It is part of County Mayo, joined ... Achillas (from the article "Arsinoe IV") ...landing in Alexandria in 48, Caesar captured the members of the Ptolemaic royal family, but ... Achilles in Greek mythology, son of the mortal Peleus, king of the Myrmidons, and the Nereid, ... [12 Related Articles] Achilles (from the article "Troilus and Cressida") ...of Sparta but now the mistress of the Trojan prince Paris. Their one scene together ... Achilles (from the article "Wolf, Max") ...to use the stereocomparator (a type of stereoscopic viewer), which greatly helps in the discovery ... Achilles Painter Athenian vase painter known by and named for an amphora attributed to him with a ... Achilles paradox in logic, an argument attributed to the 5th-century BC Greek philosopher Zeno, and one of ... [5 Related Articles] Achilles Tatius author of Leucippe and Cleitophon, one of the Greek prose romances that influenced the development ... Achilles tendon strong tendon at the back of the heel that connects the calf muscles to the ... [1 Related Articles] Achillini, Alessandro Italian philosopher and physician, an advocate of the teachings of William of Ockham. Achinsk city, Krasnoyarsk kray (region), south-central Russia. It lies along the Chulym River, which is a ... Achinstein, Peter (from the article "science, philosophy of") ...strategy began by questioning the Hempelian proposal that ordinary explanations consist in explanation sketches whose ... Achlya (from the article "fungus") ...in the other. In Allomyces (order Blastocladiales) a pheromone named sirenin, secreted by the female ... Acholi ethnolinguistic group of northern Uganda and southernmost Sudan. Numbering more than one million at the ... [3 Related Articles] achondrite any stony meteorite containing no chondrules (small, roughly spherical objects that formed in the solar ... [4 Related Articles] achondroplasia genetic disorder characterized by an abnormality in the conversion of cartilage into bone. As a ... [3 Related Articles] Achong, Larry (from the article "Trinidad and Tobago") Trinidad and Tobago's labour minister, Larry Achong, resigned from Prime Minister Patrick Manning's cabinet in ... Achoris (from the article "Egypt, ancient") ...independence, 4th-century Egypt was characterized by continual internal struggle for the throne. After a long ... achroite (from the article "tourmaline") ...usually recognized: iron tourmaline (schorl), black in colour; magnesium tourmaline (dravite), brown; and alkali tourmaline, ... achromatic lens (from the article "biology") ...microscope languished for nearly 200 years, mainly because the early lenses tended to break up ... achromatic point (from the article "colour") ...closed curve, as shown in the standard chromaticity diagram. Points along the circumference correspond to ... Achromatium (from the article "bacteria") ...Some bacteria are relatively large, such as Azotobacter, which has diameters of 2 to 5 ... achromatopsia (from the article "colour blindness") Acquired colour blindness is usually of the blue-yellow type and can be due to retinal ... Achterberg, Gerrit Dutch poet whose use of surreal language and imagery influenced a generation of post-World War ... Achterhoek (from the article "Gelderland") ...with sandy soil; south is fertile clay alluvium. The northern portion is divided by the ... Achyuta Deva Raya (from the article "India") Krishna Deva had passed over his infant son and his young nephew and picked his ... acicular texture (from the article "mineral") ...flat, platelike individuals arranged in layers; bladed, elongated crystals flattened like a knife blade; fibrous, ... acid any substance that in water solution tastes sour, changes the colour of certain indicators (e.g., ... [17 Related Articles] acid anhydride (from the article "chemical compound") Esters have an alkoxy (OR) fragment attached to the acyl group; amides have attached amino ... acid bite (from the article "printmaking") The acid bite of the plate is a critical stage in the making of an ... Acid Black 1 (from the article "dye") ...groups direct in weakly acidic media. H-acid (8-amino-1-naphthol-3,6-disulfonic acid) has both functional groups and can ... acid dye any bright-coloured synthetic organic compound whose molecule contains two groups of atoms-one acidic, such as ... [1 Related Articles] acid halide neutral compound that reacts with water to produce an acid and a hydrogen halide. Acid ... [1 Related Articles] acid house (from the article "house") ...such as Frankie Knuckles and Marshall Jefferson, house reached Europe by 1986, with tracks on ... acid hydrolase (from the article "lysosome") ...and microorganisms. Each lysosome is surrounded by a membrane that maintains an acidic environment within ... acid leaching (from the article "uranium processing") Acid leaching is commonly performed by agitating an ore-leach mixture for 4 to as long ... acid lead (from the article "lead processing") ...for piping and as a lining material. Common lead is fully refined and desilvered lead, ... acid phosphatase (from the article "enzyme analysis") ...usually shows elevated serum values in such conditions as Paget's disease (inflammation of the bone) ... acid rain form of precipitation containing a heavy concentration of sulfuric and nitric acids. The term is ... [10 Related Articles] acid-base catalysis acceleration of a chemical reaction by the addition of an acid or a base, the ... acid-base equilibrium (from the article "acid-base reaction") Certain general principles apply to any solvent with both acidic and basic properties-for example, water, ... acid-base reaction a type of chemical process typified by the exchange of one or more hydrogen ions, ... [12 Related Articles] acid-base titration (from the article "titration") ...will signal the end point at, or very close to, the equivalence point. Such titrations, ... Acidalia Planitia (from the article "Mars") ...encompass all of the terrain within 30° of the pole except for the layered terrains ... acidity (from the article "The Environment") ...reef tourism or fishing. Seawater is naturally alkaline, with an average pH of 8.2. (On ... acidity exponent (from the article "acid-base reaction") ...Since readily accessible values of Ka are always much less than unity, it is often ... acidity function (from the article "acid-base reaction") ...H9O4+), and a decrease in water content increases the proton-donating power of the solution. The ... acidosis abnormally high level of acidity, or low level of alkalinity, in the body fluids, including ... [5 Related Articles] acidulation (from the article "nitrogen group element") Two principal techniques for converting phosphate rock to usable materials are practiced. One involves acidulation ... Acier Noir (from the article "Cassandre") ...cofounded the advertising agency Alliance Graphique and soon turned his attention to experimental typography. In ... Acier, Michel Victor (from the article "pottery") ...Sevres, and the work of Meissen for the next 50 years is much less important ... acinar cell (from the article "pharmaceutical industry") ...to allow him use of a laboratory to search for the active substance from the ... Acinonyx (from the article "feline") ...leopard, or ounce)1 Asian species.Subfamily AcinonychinaeGenus Acinonyx (cheetah)1 almost exclusively African... acinus (from the article "respiratory disease") ...trachea-there are about 650,000 terminal bronchioles. The cross-sectional area of the bronchial tree increases with ... Acipenser guldenstadtii (from the article "sturgeon") A. guldenstadtii is one of the most valuable species inhabiting the rivers of Russia and ... Acipenser oxyrhynchus (from the article "sturgeon") The common Old World sturgeon (Acipenser sturio) occurs from Scandinavia to the Mediterranean. A very ... Acipenser stellatus (from the article "sturgeon") ...in the rivers feeding the Black and Caspian seas. A smaller species, the sterlet (A. ... Acipenseriformes (from the article "chondrostean") The origin of the order Acipenseriformes (which includes the sturgeon) is not known, although they ... Acireale town and episcopal see, eastern Sicily, Italy, on terraces above the Ionian Sea at the ... Acis in the Greek mythology of Ovid, the son of Faunus (Pan) and the nymph Symaethis. ... Acker, Kathy American novelist whose writing style and subject matter reflect the so-called punk sensibility that emerged ... Ackerley, J.R. British novelist, dramatist, poet, and magazine editor known for his eccentricity. Ackerman, Diane American writer whose works often reflect her interest in natural science. Ackerman, Edward A. (from the article "geography") ...belief that the methods for defining regions were out of line with the scientific approaches ... Ackermann system (from the article "truck") Steering of trucks, with their relatively heavy loads, was a problem until power steering came ... Ackermann, Konrad Ernst actor-manager who was a leading figure in the development of German theatre. Ackermann, Louise-Victorine French poet who is best-known for works characterized by a deep sense of pessimism. Ackermann, Wilhelm (from the article "logic, history of") ...of the semantic and syntactic notions necessary to characterize consistency precisely. The first clear proof ... Ackland-Snow, Brian (from the article "1986: Other Winners") ...Screenplay: Woody Allen for Hannah and Her SistersAdapted Screenplay: Ruth Prawer Jhabvala for A Room ... Ackroyd, Peter British novelist, critic, biographer, and scholar whose technically innovative novels present an unconventional view of ... Acmaeidae (from the article "gastropod") ...rocky areas.Superfamily Patellacea (Docoglossa)Conical-shelled limpets, without slits or holes, found in rocky shallow waters (Acmaeidae ... Acme Colored Giants (from the article "baseball") ...being raised. Black players were in the minor leagues for the next few years, but ... Acmeist member of a small group of early-20th-century Russian poets reacting against the vagueness and affectations ... [5 Related Articles] acmite (from the article "aegirine") ...occurs in crystalline schists. Aegirine forms a continuous chemical series with aegirine-augite, in which calcium ... acne any inflammatory disease of the sebaceous, or oil, glands of the skin. There are some ... [3 Related Articles] acne vulgaris (from the article "childhood disease and disorder") Acne vulgaris (common acne) is a prevalent skin condition that has its onset during adolescence. ... Acocella, Joan (from the article "Literature") ...trance. He would stare straight ahead and utter a low hum and beat time with ... Acochlidacea (from the article "gastropod") ...shell; operculum present; gill and radula absent; long proboscis with stylet; ectoparasitic; in warm oceanic ... Acoela (from the article "flatworm") ...endocommensal (i.e., living, respectively, outside or inside another organism without harming it), or parasitic; about ... acoelomate (from the article "animal") Flatworms (phyla Platyhelminthes, Nemertea, and Mesozoa) lack a coelom, although nemerteans have a fluid-filled cavity ... Acoemeti monks at a series of 5th- to 6th-century Byzantine monasteries who were noted for their ... [1 Related Articles]

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