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  • Prospect Park (Illinois, United States)

    Glen Ellyn, village, DuPage county, northeastern Illinois, U.S. It is a suburb of Chicago, lying 23 miles (37 km) west of downtown. Glen Ellyn’s phases of development were marked by seven name changes: Babcock’s Grove (1833), for the first settlers, Ralph and Morgan Babcock; DuPage Center (1834);

  • prospect poetry (literature genre)

    topographical poetry: A subgenre, the prospect poem, details the view from a height. The form was established by John Denham in 1642 with the publication of his poem Cooper’s Hill. Topographical poems were at their peak of popularity in the 17th and 18th centuries, though there are examples from the…

  • prospect theory (psychology)

    Prospect theory, psychological theory of decision-making under conditions of risk, which was developed by psychologists Daniel Kahneman and Amos Tversky and originally published in 1979 in Econometrica. The model has been imported into a number of fields and has been used to analyze various aspects

  • prospecting (mining)

    Prospecting, search for economically exploitable mineral deposits. Until the 20th century prospecting involved roaming likely areas on foot looking for direct indications of ore mineralization in outcrops, sediments, and soils. Colours have been a traditional guide to ores. The reds, browns, and

  • prospective study (demography)

    Cohort analysis, method used in studies to describe an aggregate of individuals having in common a significant event in their life histories, such as year of birth (birth cohort) or year of marriage (marriage cohort). The concept of cohort is useful because occurrence rates of various forms of

  • Prosper of Aquitaine, Saint (Christian polemicist)

    Saint Prosper of Aquitaine, ; feast day July 7), early Christian polemicist famous for his defense of Augustine of Hippo and his doctrine on grace, predestination, and free will, which became a norm for the teachings of the Roman Catholic church. Prosper’s chief opponents were the Semi-Pelagians,

  • prosperity (economics)

    postmaterialism: Conversely, conditions of prosperity and security are conducive to tolerance of diversity in general and democracy in particular. This helps explain a long-established finding: rich societies are much likelier to be democratic than poor ones. One contributing factor is that the authoritarian reaction is strongest under conditions of…

  • Prospero (satellite)

    Prospero, the first and only Earth satellite launched by Great Britain. It was launched with a British Black Arrow missile on Oct. 28, 1971, from the rocket-testing facility at Woomera, Australia. Prospero weighed 145 pounds (66 kg) and was primarily designed to test the efficiency of various

  • Prospero (fictional character)

    Prospero, the exiled rightful duke of Milan and a master magician in Shakespeare’s The Tempest. Prospero has used the experience of shipwreck on an enchanted island to master all sorts of supernatural powers. He uses this knowledge to transform the island and its inhabitants and eventually to

  • Prospero Farinaccius (Italian jurist)

    Prospero Farinacci, Italian jurist whose Praxis et Theorica Criminalis (1616) was the strongest influence on penology in Roman-law countries until the reforms of the criminologist-economist Cesare Beccaria (1738–94). The Praxis is most noteworthy as the definitive work on the jurisprudence of

  • Prospettive (magazine by Malaparte)

    Curzio Malaparte: …in his own literary magazine, Prospettive (1937), and in many articles written for fascist periodicals. He also wrote a particularly controversial and influential discussion of violence and means of revolution published in French, Technique du coup d’état (1931; Coup d’État, the Technique of Revolution; Italian trans., Tecnica del colpo di…

  • Prosser, Gabriel (American bondsman)

    Gabriel, American bondsman who planned the first major slave rebellion in U.S. history (Aug. 30, 1800). His abortive revolt greatly increased the whites’ fear of the slave population throughout the South. The son of an African-born mother, Gabriel grew up as the slave of Thomas H. Prosser. Gabriel

  • Prossnitz (Czech Republic)

    Prostějov, town, south-central Czech Republic, just southwest of Olomouc, in the farming region of the Haná Valley. Founded in the 12th century, the town became a centre for publishing Czech and Hebrew books after 1500. The town hall has a Renaissance portal (1521) and contains a museum featuring a

  • Prost, Alain (French race-car driver)

    Michael Schumacher: …51, held by French driver Alain Prost. In December 2009 Schumacher announced that he would return to F1 for the 2010 season as a driver for the Mercedes team. He spent three seasons with Mercedes, but he never won a race and never finished higher than eighth in the overall…

  • prostacyclin (chemical compound)

    prostaglandin: Vasodilation and blood clotting: Thromboxanes and prostacyclins play an important role in the formation of blood clots. The process of clot formation begins with an aggregation of blood platelets. This process is strongly stimulated by thromboxanes and inhibited by prostacyclin. Prostacyclin is synthesized in the walls of blood vessels and serves…

  • prostaglandin (chemical compound)

    Prostaglandin, any of a group of physiologically active substances having diverse hormonelike effects in animals. Prostaglandins were discovered in human semen in 1935 by the Swedish physiologist Ulf von Euler, who named them, thinking that they were secreted by the prostate gland. The

  • prostagma (Byzantine document)

    diplomatics: The Roman and Byzantine empire: …Byzantine imperial chancery include the prostagma, or horismos, a plain and short document known since the beginning of the 13th century. If directed to a single person, the document starts out with a short address, but, in all other cases, it begins immediately with the narratio, followed by the dispositio.…

  • prostanoid (chemical compound)

    drug: Drugs that affect smooth muscle: …function as local hormones are prostanoids. Prostanoids (e.g., prostaglandins) and leukotrienes (a related group of lipids) are derived by enzymatic synthesis from one of three 20-carbon fatty acids, the most important being arachidonic acid. These substances are important especially in producing tissue responses to injury. Among their most important sites

  • Prostanthera (plant genus)

    mint: …Australian genus Prostanthera are called mint bushes.

  • prostate cancer (pathology)

    Prostate cancer, disease characterized by uncontrolled growth of cells within the prostate gland, a walnut-sized organ surrounding the urethra just below the bladder in males. Prostate cancer is a frequently diagnosed cancer among males, particularly among those who are older (the disease is rare

  • prostate gland (anatomy)

    Prostate gland, chestnut-shaped reproductive organ, located directly beneath the urinary bladder in the male, which adds secretions to the sperm during the ejaculation of semen. The gland surrounds the urethra, the duct that serves for the passage of both urine and semen. Rounded at the top, the

  • prostate-specific antigen (protein)

    prostate cancer: Diagnosis: A blood test for prostate-specific antigen (PSA) may be used to detect prostate tumours in their earliest stages in high-risk individuals. If any of these tests suggest cancer, a biopsy is done to confirm the diagnosis. When caught early, prostate cancer is treatable. A large majority of prostate cancers…

  • prostatic acid phosphatase (biochemistry)

    cancer: Immunotherapy: …laboratory in the presence of prostatic acid phosphatase (PAP), an enzyme that is overproduced by prostate cancer cells. The cells, now “activated” (capable of provoking an immune response), are infused back into the patient, leading to the expansion of populations of PAP-specific T cells and a more effective immune response…

  • prostatic disorder (medicine)

    Prostatic disorder, any of the abnormalities and diseases that afflict the prostate gland in the male reproductive system. The prostate gland is dependent on the hormonal secretions of the testes for growth and development. When production of the male hormone (androgen) decreases, the prostate

  • prostatic utricle (anatomy)

    human reproductive system: Ejaculatory ducts: …reach the floor of the prostatic urethra. This part of the urethra has on its floor (or posterior wall) a longitudinal ridge called the urethral crest. On each side is a depression, the prostatic sinus, into which open the prostatic ducts. In the middle of the urethral crest is a…

  • Prostějov (Czech Republic)

    Prostějov, town, south-central Czech Republic, just southwest of Olomouc, in the farming region of the Haná Valley. Founded in the 12th century, the town became a centre for publishing Czech and Hebrew books after 1500. The town hall has a Renaissance portal (1521) and contains a museum featuring a

  • prosthecae (biology)

    bacteria: Budding: …cell or on filaments called prosthecae. As growth proceeds, the size of the mother cell remains about constant, but the bud enlarges. When the bud is about the same size as the mother cell, it separates. This type of reproduction is analogous to that in budding fungi, such as brewer’s…

  • prosthesis (medicine)

    Prosthesis, artificial substitute for a missing part of the body. The artificial parts that are most commonly thought of as prostheses are those that replace lost arms and legs, but bone, artery, and heart valve replacements are common (see artificial organ), and artificial eyes and teeth are also

  • prosthetic group (biochemistry)

    enzyme: Chemical nature: …is referred to as a prosthetic group.

  • prosthetics (medicine)

    prosthesis: …deals with prostheses is called prosthetics. The origin of prosthetics as a science is attributed to the 16th-century French surgeon Ambroise Paré. Later workers developed upper-extremity replacements, including metal hands made either in one piece or with movable parts. The solid metal hand of the 16th and 17th centuries later…

  • prosthodontia (dentistry)

    Prosthodontics, dental specialty concerned with restoration and maintenance of oral function, appearance, and comfort by use of prostheses. The oral prostheses replacing teeth may be removable dentures or partial dentures or permanently fixed tooth prostheses, connected to remaining teeth or i

  • prosthodontics (dentistry)

    Prosthodontics, dental specialty concerned with restoration and maintenance of oral function, appearance, and comfort by use of prostheses. The oral prostheses replacing teeth may be removable dentures or partial dentures or permanently fixed tooth prostheses, connected to remaining teeth or i

  • Prostigmata (arachnid)

    Chigger, (suborder Prostigmata), the larva of any of approximately 10,000 species of mites in the invertebrate subclass Acari (the mites and ticks). The name is also erroneously applied to an insect better known as the chigoe, jigger, or jigger flea. Chiggers range in length from 0.1 to 16 mm

  • prostitution

    Prostitution, the practice of engaging in relatively indiscriminate sexual activity, in general with someone who is not a spouse or a friend, in exchange for immediate payment in money or other valuables. Prostitutes may be female or male or transgender, and prostitution may entail heterosexual or

  • Prostoma (ribbon worm genus)

    ribbon worm: Within the genera Prostoma and Geonemertes, the species may be either dioecious (i.e., separate male and female animals) or hermaphroditic (i.e. male and female reproductive organs in one animal). All ribbon worms have the ability to regenerate lost or damaged parts of their bodies; some species actually break…

  • prostomium (anatomy)

    annelid: External features: The first segment, the prostomium, is in front of the mouth and may be a simple lobe or a highly developed projection. The next segment, the peristome, surrounds the mouth and is followed by a series of segments, the total number of which may be limited or unlimited. The…

  • prostrate pigweed (plant)

    pigweed: Prostrate pigweed, or mat amaranth (A. graecizans), grows along the ground surface with stems rising at the tips; spiny pigweed, or spiny amaranth (A. spinosus), has spines at the base of the leafstalks; and rough pigweed, or redroot (A. retroflexus), is a stout plant up…

  • prostrate spurge (plant)

    spurge: …as the weedy North American prostrate spurge (E. supine), which grows out of sidewalk cracks—to shrubs and trees. They have one female flower consisting of a single female reproductive structure, the pistil, surrounded by numerous male flowers of one stamen each. All these reduced flowers are enclosed in a cup-shaped,…

  • prostration (ritual)

    Alexander the Great: Campaign eastward to Central Asia: …the Persian court ceremonial, involving prostration (proskynesis), on the Greeks and Macedonians too, but to them this custom, habitual for Persians entering the king’s presence, implied an act of worship and was intolerable before a human. Even Callisthenes, historian and nephew of Aristotle, whose ostentatious flattery had perhaps encouraged Alexander…

  • Prota Matija (Serbian priest)

    Matija Nenadović, Serbian priest and patriot, the first diplomatic agent of his country in modern times. He is often called Prota Matija, because, as a boy of 16, he was made a priest and, a few years later, became archpriest (prota) of Valjevo. His father, Aleksa Nenadović, was a local magistrate

  • protacanthopterygian (fish)

    Protacanthopterygian, (superorder Protacanthopterygii), any member of a diverse and complex group of bony fishes made up of the orders Salmoniformes, Osmeriformes, and Esociformes. The superorder Protacanthopterygii, considered to be the most primitive of the modern teleosts, contains about 366

  • Protacanthopterygii (fish)

    Protacanthopterygian, (superorder Protacanthopterygii), any member of a diverse and complex group of bony fishes made up of the orders Salmoniformes, Osmeriformes, and Esociformes. The superorder Protacanthopterygii, considered to be the most primitive of the modern teleosts, contains about 366

  • protactinium (chemical element)

    Protactinium (Pa), radioactive chemical element of the actinoid series of the periodic table, rarer than radium; its atomic number is 91. It occurs in all uranium ores to the extent of 0.34 part per million of uranium. Its existence was predicted by Russian chemist Dmitry Mendeleyev in his 1871

  • protactinium-231 (isotope)

    protactinium: The long-lived isotope protactinium-231 (originally called protoactinium for “before actinium” and later shortened to protactinium) was discovered (1917) independently by German chemist Otto Hahn and Austrian physicist Lise Meitner in pitchblende, by Fajans, and by British chemists Frederick Soddy, John Cranston, and Sir Alexander Fleck. This isotope

  • protactinium-231–thorium-230 dating (geology)

    Protactinium-231–thorium-230 dating, method of age determination that makes use of the quantities of certain protactinium and thorium isotopes in a marine sediment. Protactinium and thorium have very similar chemical properties and appear to be precipitated at the same rates in marine sediments.

  • protactinium-233 (isotope)

    nuclear reactor: Fissile and fertile materials: …decays through electron emission to protactinium-233, whose half-life is 26.967 days. The protactinium-233 nuclide in turn decays through electron emission to yield uranium-233.

  • protactinium-234 (isotope)

    Kasimir Fajans: …with Otto Gohring, he discovered uranium X2, which is now called protactinium-234m. In 1917 he joined the Institute of Physical Chemistry, Munich, where he rose from associate professor to director. From 1936 to 1957, when he retired, Fajans was a professor at the University of Michigan, Ann Arbor. He became…

  • protagonist (literature)

    Protagonist, in ancient Greek drama, the first or leading actor. The poet Thespis is credited with having invented tragedy when he introduced this first actor into Greek drama, which formerly consisted only of choric dancing and recitation. The protagonist stood opposite the chorus and engaged in

  • Protagoras (Greek philosopher)

    Protagoras, thinker and teacher, the first and most famous of the Greek Sophists. Protagoras spent most of his life at Athens, where he considerably influenced contemporary thought on moral and political questions. Plato named one of his dialogues after him. Protagoras taught as a Sophist for more

  • Protagoras (work by Plato)

    Plato: Happiness and virtue: The Protagoras addresses the question of whether the various commonly recognized virtues are different or really one. Proceeding from the interlocutor’s assertion that the many have nothing to offer as their notion of the good besides pleasure, Socrates develops a picture of the agent according to…

  • protamine (protein)

    Protamine, simple alkaline protein usually occurring in combination with a nucleic acid as a nucleoprotein. In the 1870s Johann Friedrich Miescher discovered a protamine, salmine, in the sperm of salmon. Other typical protamines include sturine, from sturgeon, and clupeine, from herring sperm. The

  • protamine sulfate (drug)

    protamine: The drug protamine sulfate, prepared from the sperm of various fishes, is used as an antidote to overdoses of the anticoagulant heparin.

  • protandry (botany)

    plant breeding: Mating systems: , protandry (pollen shed before the ovules are mature, as in the carrot and walnut), dioecy (male and female parts are borne on different plants, as in the date palm, asparagus, and hops), and genetically determined self-incompatibility (inability of pollen to grow on the stigma of…

  • protandry (hermaphroditism)

    reproductive behaviour: Fishes: …than the reverse situation (protandrous hermaphroditism). The selective reasons for the predominance of the former are presumably associated with the relationship between smaller body size in females and the greater energy requirements needed to produce eggs. In addition, in some promiscuous mating systems, it may be selectively advantageous to…

  • protanomaly (physiology)

    colour blindness: Types of colour blindness: In protanomaly, for example, sensitivity to red is reduced as a result of abnormalities in the red cone photopigment. In deuteranomaly, in which sensitivity to green is reduced, the green cones are functionally limited. Two forms of blue-yellow colour blindness are known: tritanopia (blindness to blue,…

  • protanopia (colour blindness)

    colour blindness: Types of colour blindness: …to red is known as protanopia, a state in which the red cones are absent, leaving only the cones that absorb blue and green light. Blindness to green is known as deuteranopia, wherein green cones are lacking and blue and red cones are functional. Some persons experience anomalous dichromatic conditions,…

  • Protarchaeopteryx (dinosaur)

    feathered dinosaur: Discoveries in the Liaoning deposits: Other Liaoning discoveries, such as Protarchaeopteryx and the oviraptorosaur Caudipteryx, showed that these animals had some types of rudimentary feathers that are not represented in Archaeopteryx or later birds. Some individual feathers have simple branched filaments, whereas others have strong fused bases and a tuft of filaments, slightly similar to…

  • protea order (plant order)

    Proteales, the protea order of dicotyledonous flowering plants, with 3 families, around 75 genera, and nearly 1,060 species. Along with Buxales, Ranunculales, Trochodendrales, and Sabiaceae, Proteales is part of a group known as peripheral eudicots in the Angiosperm Phylogeny Group III (APG III)

  • Proteaceae (plant family)

    Proteales: …family in the order is Proteaceae, which has close to 75 genera and 1,050 species and is confined predominantly to the Southern Hemisphere, mostly in Australia, South Africa, and Madagascar. Platanaceae has a single Northern Hemisphere genus Platanus, with 8–10 species. Similarly, Nelumbonaceae has just one aquatic genus, Nelumbo (lotus),…

  • Proteales (plant order)

    Proteales, the protea order of dicotyledonous flowering plants, with 3 families, around 75 genera, and nearly 1,060 species. Along with Buxales, Ranunculales, Trochodendrales, and Sabiaceae, Proteales is part of a group known as peripheral eudicots in the Angiosperm Phylogeny Group III (APG III)

  • Protean figure (mythology)

    myth: Relationships of mixture: …characteristic of monsters is the Protean figure who can change into any form or combination of forms at will. In all of these monstrous forms, the central notion appears to be the danger associated with beings that are out of place or are fluid. But some contemporary anthropologists have argued…

  • protease (enzyme)

    Proteolytic enzyme, any of a group of enzymes that break the long chainlike molecules of proteins into shorter fragments (peptides) and eventually into their components, amino acids. Proteolytic enzymes are present in bacteria, archaea, certain types of algae, some viruses, and plants; they are

  • protease inhibitor (drug)

    Protease inhibitor, class of antiretroviral drugs used to treat HIV retrovirus infection in AIDS patients. Protease inhibitors are characterized by their ability to block activation of an HIV enzyme called protease. The protease enzyme is involved in the synthesis of new viral particles, which can

  • proteasome (biology)

    Aaron J. Ciechanover: The outer membrane of the proteasome admits only proteins carrying a ubiquitin molecule, which detaches before entering the proteasome and is reused.

  • Protect Our Nation’s Youth Baseball, Inc. (sports organization)

    baseball: Amateur baseball: …Babe Ruth League (1952) and PONY (Protect Our Nation’s Youth) Baseball, Inc. (1951).

  • protected cruiser (warship)

    cruiser: …were of two principal kinds: protected cruisers had steel armour plating only on their decks, while armoured cruisers also had armour extending down the sides of the hull. Though smaller than battleships, cruisers were powerful warships because of their great speed and relatively big guns.

  • protecting power (international politics)

    law of war: Prisoners of war: …states must ensure that a protecting power is appointed to act on their behalf. A protecting power is a neutral state acceptable to the state that holds prisoners of war. There were no protecting powers appointed during the Vietnam War or the Iran–Iraq War, but in the Falklands conflict Switzerland…

  • protecting powers (European history)

    20th-century international relations: …relations between states, especially the great powers, from approximately 1900 to 2000.

  • Protection and Development of the Marine Environment of the Wider Caribbean Region, Convention for the (international agreement)

    Caribbean Sea: Resources: …the Wider Caribbean Region (Cartegena Convention) was adopted officially by about half of the countries of the Caribbean in 1983, but its measures have since been implemented more broadly across the Caribbean community. The Cartegena Convention calls for its signatories to provide—individually and jointly—protection, development, and management of the…

  • protection and indemnity association (insurance)

    maritime law: Marine insurance: …owners banded together in “protection and indemnity” associations, commonly known as “P. and I. Clubs,” whereby they insured each other against the liabilities to which they were all exposed in the operation of their vessels. These included liability for cargo damage, personal injury, and damage to piers, bridges, and…

  • protection and indemnity clause (marine insurance)

    insurance: RDC clause: A companion clause, the protection and indemnity clause (P and I), covers the carrier or shipper for negligence that causes bodily injury to others.

  • Protection of Ancient Buildings, Society for the (British organization)

    William Morris: Iceland and socialism: …1877 he also founded the Society for the Protection of Ancient Buildings in an attempt to combat the drastic methods of restoration then being carried out on the cathedrals and parish churches of Great Britain.

  • Protection of Human Rights and Fundamental Freedoms, Convention for the (Europe [1950])

    European Convention on Human Rights (ECHR), convention adopted by the Council of Europe in 1950 to guard fundamental freedoms and human rights in Europe. Together with its 11 additional protocols, the convention—which entered into force on September 3, 1953—represents the most advanced and

  • Protection of Lawful Commerce in Arms Act (United States [2005])

    Beltway sniper attacks: …for the passage of the Protection of Lawful Commerce in Arms Act, a 2005 law that largely indemnified gun manufacturers and dealers from future liability suits.

  • protection of telomeres protein (protein)

    Thomas Robert Cech: …“protection of telomeres protein” (POT1) that caps the end of a chromosome, protecting it from degradation and ensuring the maintenance of appropriate telomere length. These discoveries had major implications in understanding the underlying mechanisms of cancer, as the disease was thought to be due in large part to the…

  • Protection of the Black Sea Against Pollution, Convention on the (international agreement)

    Black Sea: Economic aspects: …Black Sea countries signed the Convention on the Protection of the Black Sea Against Pollution (also called Bucharest Convention), a comprehensive agreement to implement an array of additional programs to control pollution, sustain the fisheries, and protect marine life.

  • Protection of the Marine Environment of the North-East Atlantic, Convention for the (international agreement)

    North Sea: The impact of human activity: …of the North-East Atlantic (OSPAR Convention) revised and incorporated earlier international agreements concerning marine pollution in the North Sea. The core of the convention was officially put into force in 1998. Various annexes and appendices to the agreement were implemented in subsequent years, and environmental monitoring has indicated a…

  • protection positive (photography)

    motion-picture technology: Film processing and printing: …is used to make a master positive, sometimes known as the protection positive, from which a printing negative is then made to run off the release prints. Alternatively, a “dupe” negative can be made by copying the original camera negative through the reversal process. This yields a colour reversal intermediate…

  • protection system (personal and property protection)

    Security and protection system, any of various means or devices designed to guard persons and property against a broad range of hazards, including crime, fire, accidents, espionage, sabotage, subversion, and attack. Most security and protection systems emphasize certain hazards more than others.

  • protection, effective rate of (economics)

    international trade: Measuring the effects of tariffs: The effective rate of protection is a more complex concept: consider that the same product—clothing—costs $100 on international markets. The material that is imported to make the clothing (material inputs) sells for $60. In a free-trade situation, a firm can charge no more than $100 for…

  • protection, equal (United States law)

    Equal protection, in United States law, the constitutional guarantee that no person or group will be denied the protection under the law that is enjoyed by similar persons or groups. In other words, persons similarly situated must be similarly treated. Equal protection is extended when the rules of

  • protection, nominal rate of (economics)

    international trade: Measuring the effects of tariffs: The nominal rate of protection is the percentage tariff imposed on a product as it enters the country. For example, if a tariff of 20 percent of value is collected on clothing as it enters the country, then the nominal rate of protection is that same…

  • protection, principle of (biology)

    plant disease: Protection: The principle of protection involves placing a barrier between the pathogen and the susceptible part of the host to shield the host from the pathogen. This can be accomplished by regulation of the environment, cultural and handling practices, control of insect carriers, and application of chemical…

  • protectionism (economics)

    Protectionism, policy of protecting domestic industries against foreign competition by means of tariffs, subsidies, import quotas, or other restrictions or handicaps placed on the imports of foreign competitors. Protectionist policies have been implemented by many countries despite the fact that

  • Protective Association of Professional Baseball Players

    baseball: Labour issues: …League war of 1900–03, the Protective Association of Professional Baseball Players got National League players to switch to the other league, but with the peace treaty the association died. In 1912 came the Baseball Players’ Fraternity, which included most professional players. It was organized after the suspension of Ty Cobb…

  • protective clothing

    chemical weapon: On the battlefield: …provided by gas masks and protective clothing and the collective protection of combat vehicles and mobile or fixed shelters. Filters for masks and shelters contain specially treated activated charcoal, to remove vapours, and paper membranes or other materials, to remove particles. Such filters typically can reduce the concentration of chemical…

  • protective covenant (law)

    Restrictive covenant, in Anglo-American property law, an agreement limiting the use of property. Known to Roman law but little used in England or the United States until the 19th century, restrictive covenants are now widely used. To protect property values and provide neighbourhood stability,

  • protective custody (ecology)

    conservation: Protective custody: Some species become so rare that there are doubts about whether they will be able to survive in the wild. Under such circumstances, the species may be brought into protective custody until areas can be made suitable for their release back into the…

  • protective magic (occult practice)

    Middle Eastern religion: The role of magic: White, or protective, magic was never seriously discouraged. Black, or destructive, magic was frowned on by organized society, regardless of whether the official religion was monotheistic or polytheistic, because black magic makes its victims unfit for functioning productively in society. Section II of the Babylonian…

  • protective mask (protective clothing)

    biological weapon: Military defense: …biological weapons is a good protective mask equipped with filters capable of blocking bacteria, viruses, and spores larger than one micron (one micrometre; one-millionth of a metre) in cross section from entry into the wearer’s nasal passages and lungs. Protective overgarments, including boots and gloves, are useful for preventing biological…

  • protective principle (international law)

    international law: Jurisdiction: The protective principle, which is included in the hostages and aircraft-hijacking conventions and the Convention on the Safety of United Nations and Associated Personnel (1994), can be invoked by a state in cases where an alien has committed an act abroad deemed prejudicial to that state’s…

  • Protective Service for the Indians (agency, Brazil)

    South America: Sociological changes: …example, institutions such as the Protective Service for the Indians (Serviço de Proteção do Indio) and the National Indian Foundation (Fundação Nacional do Indio) were established, although such organizations often have become agents for the relocation and control of Indian groups rather than for their interests and survival. Christian missionaries…

  • protective sports gear (sports)

    boxing: Professional boxing: Protective headgear is worn in amateur boxing, and some have called for this headgear to be adopted by professional boxers. Prizefighters have generally objected to such suggestions, arguing that headgear would make fighting yet more dangerous because it causes a boxer to be less vigilant…

  • protective tariff (economics)

    Grover Cleveland: Presidency: …the presidential campaign was the protective tariff. Cleveland opposed the high tariff, calling it unnecessary taxation imposed upon American consumers, while Republican candidate Benjamin Harrison defended protectionism. On election day, Cleveland won about 100,000 more popular votes than Harrison, evidence of the esteem in which the president was held and…

  • Protector (submarine)

    Simon Lake: Lake’s “Protector” (1906), about 60 feet (18 metres) long, was rejected by the Congress for purchase for the U.S. Navy. Lake sold it to Russia, and it was shipped to Vladivostok. Lake went there for several years to supervise its reassembly and the training of crews.…

  • Protector, The (Protector of England)

    Edward Seymour, 1st duke of Somerset, the Protector of England during part of the minority of King Edward VI (reigned 1547–53). While admiring Somerset’s personal qualities and motives, scholars have generally blamed his lack of political acumen for the failure of his policies. After the marriage

  • protectorate (international relations)

    Protectorate, in international relations, the relationship between two states one of which exercises some decisive control over the other. The degree of control may vary from a situation in which the protecting state guarantees and protects the safety of the other, such as the status afforded to

  • Protectorate (English government)

    Protectorate, the English government from 1653 to 1659. After the execution of King Charles I, England was declared a commonwealth (1649) under the rule of Parliament. But, after Oliver Cromwell had dissolved the Rump and Barebones parliaments in succession in 1653, he was installed on Dec. 16,

  • Protectorate People’s Party (political party, The Gambia)

    The Gambia: Independence: Yet Jawara and the PPP easily won reelection in 1987 and 1992, although opposition parties gained some support in each election.

  • proteid (amphibian)

    Caudata: Annotated classification: Family Proteidae (olms and mud puppies) The olm is blind, has little pigment, has an elongated body, and is cave-dwelling; mud puppies live in lakes and streams, have eyes, and are normally pigmented; elongate bodies, length to 45 cm; limbs with 3 (olm) or 4 fingers,…

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