Encyclopedia

Uremic toxins Numerous uremic toxins (see link) are accumulating in chronic renal failure patients treated with standard dialysis. These toxins show various cytotoxic activities in the serum, have different molecular weights and some of them are bound to other proteins, primarily to albumin.
Urenco Group The Urenco Group operates uranium enrichment plants in Germany, The Netherlands and the United Kingdom and supplies nuclear power stations in about 15 countries in Europe and overseas. Worldwide Urenco has a 18% share (in 2004) of the market for enrichment services.
Urengoy gas field Urengoy gas field is the world's second largest natural gas field, with over ten trillion cubic meters (10¹³ m³) in total deposits. It lies in Yamalo-Nenets Autonomous Okrug in Tyumen Oblast of Russia, just south of the Arctic circle and named after the settlement of Urengoy.
Ureshino, Saga Ureshino (嬉野市; -shi) is a city located in Saga prefecture on the island of Kyūshū, Japan. The city was created on January 1, 2006 by merging with the former town of Ureshino with town of Shiota from Fujitsu District.
Ureteroscopy Ureteroscopy is an examination of the upper urinary tract, usually performed with an endoscope that is passed through the urethra, bladder, and then directly into the ureter. The procedure is useful in the diagnosis and the treatment of disorders such as kidney stones.
Ureterosigmoidostomy A ureterosigmoidostomy is a surgical procedure where the ureters which carry urine from the kidneys, are diverted into the sigmoid colon. It is done as a treatment for bladder cancer, where the urinary bladder had to be removed.
Urethra In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. The urethra has an excretory function in both sexes to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm.
Urethral syndrome Urethral syndrome is defined as 'symptoms suggestive of a lower tract urinary infection but in the absence of significant bacteruria with a conventional pathogen. There are other non-infective causes that should be considered such as trauma, allergies, and anatomical features like diverticula and post surgical scarring.
Urey (crater) Urey is a lunar impact crater located in the narrow niche of terrain between the western halves of the Rayleigh and Lyapunov craters. It lies near the east-northeastern limb of the Moon, and thus appears very foreshortened when viewed from the Earth.
Urga (film) Urga (English title Close To Eden) is a 1991 Russian movie directed by Nikita Mikhalkov. It won the Golden Lion at the Venice Film Festival and Best European Film and the European Film Awards, and was nominated for an Academy Award for Best Foreign Film, and a Golden Globe in the same category.
Urge Overkill Urge Overkill is an alternative rock band, formed in Chicago, United States, consisting of Nathan "Nash Kato" Kaatrud (vocals/guitar), and Eddie "King" Roeser (vocals/guitar/bass guitar). Their cover of Neil Diamond's song "Girl, You'll Be a Woman Soon" appeared prominently in the movie Pulp Fiction, and became a hit in 1994.
Urgell Urgell is one of the historical Catalan counties, bordering on the counties of Pallars and Cerdanya. Its maximal extension territory was between the Pyrenees and the taifa of Lleida, that is, the current comarques of Alt Urgell, Noguera, Solsonès, Pla d'Urgell, Urgell itself, and the still independent country of Andorra.
Urgent "Urgent" is the title of a 1981 song by prominent American Rock band Foreigner, from their album 4. It reached #4 on the US Billboard Hot 100 chart in the same year of its release, and the album it was on has been certifed multi-platinum, and has sold over 6 million copies External links ==
Urgent care Urgent care is the delivery of ambulatory care in a facility dedicated to the delivery of unscheduled, walk-in care outside of a hospital emergency department. The initial urgent care centers opened in the 1970s.
Urheimat Urheimat (German: ur- original, ancient; Heimat home, homeland) is a linguistic term denoting the original homeland of the speakers of a proto-language. Since many peoples tend to wander and spread, there is no absolute Urheimat, e.
Urho District Urho District (simplified Chinese: 乌尔禾区; pinyin: Wū'ěrhé Qū) is a district within the Xinjiang Uyghur Autonomous Region and is under the administrative jurisdiction of the Karamay City. It contains an area of 2,229 sq km.
Urho Kekkonen Urho Kaleva Kekkonen [IPA: urho kaleʋa kekːonen] (September 3, 1900 Pielavesi – August 31, 1986 Helsinki) was a Finnish politician who served as Prime Minister of Finland (1950-1953, 1954-1956) and later as President of Finland (1956–1981). Kekkonen continued the "active neutrality" policy of President Juho Kusti Paasikivi, which came to be known as the Paasikivi-Kekkonen Line.
Urho Lehtovaara Urho Lehtovaara (full name: Urho Sakari Lehtovaara) was born on October 27 1917 in Pyhäjärvi, northern Finland and died on January 5, 1949. He was to become one of the top scoring Finnish Air Force aces and he was awarded the Mannerheim cross on July 9, 1944.
Urhunden Prizes Urhunden Prizes have been given out each year by the Svenska Seriefrämjandet (Swedish Comic Promotion Association) (Svenska Seriefrämjandets) since 1987. There are currently three categories, Best Swedish (Domestic) Album of the Year (1987-2005), Best Foreign Album of the Year (1987-2005), and the "Unghunden" for best children's comics (1994-2005).
Urchin (software) Urchin is a web statistics analysis program developed by Urchin Software Corporation. Urchin is used to analyze web server log file content and display the traffic information on that website based upon the log data.
Urchin barren An urchin barren is an area in the open sea where the population growth of sea urchins has gone unchecked, causing massive kelp die-offs. The urchins usually only eat the holdfasts of the kelp, which sets the rest of it adrift.
Urchin Software Corporation Urchin Software Corporation was a San Diego, California based web analytics company, founded by Paul Muret and Scott Crosby. Muret wrote the first version of the Urchin software in 1997 and was Chief Executive Officer of the company.
Uri Adelman Uri Adelman (1955-2004) was an Israeli writer, musician, composer, and computer expert who taught at Tel Aviv University. Adelman , the author of four novels, exploited the exotic vagaries of his employer, TAU's musicology department, as a setting for his first thriller, Concerto for Spy and Orchestra.
Uri Avnery Uri Avnery also spelled Uri Avneri (), born September 10, 1923 in Beckum (Westphalia, Germany) as Helmut Ostermann, is an Israeli journalist, left wing peace activist, Knesset member, who was originally a member of the right wing Revisionist Zionist movement.
Uri Davis Uriel "Uri" Davis (born 1943 in Jerusalem) is an Israeli academic and activist with a focus on citizenship, apartheid and democracy in Israel and the Middle East.ZMag Bio: Uri Davis, accessed June 12, 2006 Davis has served as Vice-Chairman of the Israeli League for Human and Civil Rights and as lecturer in Peace Studies at the University of Bradford.
Uri Milstein Uri Milstein has been described as "Israel's most distinguished military historian". He is an authority on the War of Independence and author of the History of Israel's War of Independence, published in four volumes from 1996 to 1999.
Uri nation Uri Nation was a mildly successful current affairs/topical debate show hosted by and staring Uri Geller during the early to mid-nineties. It Featured regular guests such as Michael Coleman, and was one of the flagship programs of the then recently merged BSB and British Sky Broadcasting broadcasting corporation.
Uri Orlev Uri Orlev (; born Jerzy Henryk Orlowski in 1931) is an award-winning Israeli children's author and translator of Polish-Jewish origin. Born in Warsaw, Poland, he survived the war years in the Warsaw Ghetto and the Bergen-Belsen concentration camp (where he was sent after his mother was shot by the Nazis).
Uri Party The Yeollin Uri Party (en: "Our Open Party"), generally abbreviated to Uri Party (en: "Our Party"), is the ruling political party in South Korea with liberal political ideology. The party was formed when loyalists to president Roh Moo-hyun in the Millennium Democratic Party chose to break ranks from other party members who showed lukewarm support for the administration.
Uri Savir Uri Savir an ambassador, has extensive experience as a senior career diplomat, serving as head of Israeli diplomacy in the critical years 1993-96 when he was the Chief Negotiator of the Middle East Oslo Accords. Later as a Labor Member of the Israeli Parliament, he was head of the Sub-Committee for Foreign Affairs and has established two international non-profit organisations over which he presides today.
Uri Tracy Uri Tracy (February 8, 1764 - July 21, 1838) was a United States Representative from New York. Born in Norwich, Connecticut, he graduated from Yale College in 1789, became a Presbyterian clergyman and missionary to the Indians, and moved to Oxford, New York in 1791.
Uri Zvi Greenberg Uri Zvi Greenberg (1896-1981), the son of a distinguished Hasidic family was raised in Lvov (now in Ukraine) and received a traditional religious education. Before he was twenty, his first poems, written in Yiddish and Hebrew, were published in contemporary periodicals.
Uriah Uriah or Urijah (אוּרִיָּה "(My) light/flame of/is the Lord", Standard Hebrew Uriyya, Tiberian Hebrew ʾÛriyyāh; Uriah is pronounced yoo ri' uh, Urijah is pronounced yoo ri' juh in English.) was the name of several men in the Hebrew Bible.
Uriah Forrest Uriah Forrest (1746–July 6, 1805) was an American statesman and military leader from Maryland. He represented Maryland as a delegate to the Continental Congress in 1787 and in the third district of Maryland in the U.
Uriah Fuller Uriah Fuller is a pen name that Martin Gardner, a notable American skeptic, recreational mathematician, author, and amateur magician, used to write two booklets in the 1970s showing how purported psychics such as Uri Geller do their "seemingly impossible paranormal feats" such as bending spoons and apparently reading minds. The booklets are Confessions of a Psychic and Further Confessions of a Psychic.
Uriah Heep (band) Uriah Heep is an English rock band, formed in 1969 when record producer Gerry Bron invited keyboardist Ken Hensley (previously a member of The Gods and Toe Fat) to join Spice, a band signed to his own Bronze Records label. Sometimes jokingly referred to as "The Beach Boys of heavy metal" for their melodic songs, and trademark multi-part harmony backing vocals, although their music draws on diverse influences including progressive rock, hard rock, heavy metal, jazz, and even country on occasion.
Uriah Heep Live Uriah Heep Live is a 1973 live album by the British rock group Uriah Heep. In addition to a live version of the band's hit "Easy Livin'", the record includes classic live cuts such as "Sweet Lorraine", "Sunrise", and an extended live version of "July Morning".
Uriah P. Levy Uriah Phillips Levy (April 22, 1792 – March 26, 1862) was the first Jewish Commodore of the United States Navy and a veteran of the War of 1812. At the time, Commodore was the highest rank obtainable in the U.
Uriah the Hittite Uriah the Hittite was the husband of Bathsheba, a soldier in David’s army, whose death David ordered by having the soldiers retreat away from him in battle after he kept refusing to see his own wife, as ordered by David.
Uridine diphosphoglucose Uridine diphosphoglucose (UDPG) is a sugar nucleotide that is an important intermediate chemical in animal metabolism. It is a building block in the forming of polysaccharides such as galactose and glucuronic acid as well as sucrose lipopolysaccharides, and glycosphingolipids.
Uridium Uridium is a sci-fi horizontal scrolling shoot-'em-up for the Commodore 64 (and other 8-bit machines). It consisted of fifteen levels, each named after a metal element with the last level being called Uridium; a fictional metallic element.
Uriel Uriel (אוּרִיאֵל "Flame of God", Auriel/Oriel (light of god) Standard Hebrew Uriʾel, Tiberian Hebrew ʾÛrîʾēl) is one of the archangels of post-Exilic Rabbinic tradition, and also of certain Christian traditions. His name may have analogies with Uriah.
Uriel Crocker Uriel Crocker (September 12, 1796 - July 19, 1887) was a public-spirited Boston citizen, head of the Crocker & Brewster publishing house during its 58-year existence (1818-1876), and actively involved in other enterprises including railroads.
Uriel Jones Uriel Jones (born 1934 in Detroit, Michigan) is an African-American musician. Jones was a recording session drummer for Motown Records' in-house studio band, the Funk Brothers, during the 1960s and early 1970s.
Uriel Molina Father Uriel Molina was one of the most prominent leaders of the liberation theology-oriented "popular church" in Sandinista-era Nicaragua. Some of the most important Sandinistas had lived with him in a commune in Managua's poor El Riguero barrio before joining the FSLN, including JoaquĂ­n Cuadra and Luis CarrĂ­on.
Uriel Ventris Captain Uriel Ventris is a character from the fictional Warhammer 40,000 universe. He is the young captain of the Fourth Company of the Ultramarines chapter of Space Marines and the main protagonist of the Black Library's Ultramarines series of novels (McNeill, 2004a; McNeill, 2004b; McNeill, 2005).
Uriella Uriella (born Erika Bertschinger-Eicke on February 20, 1929 in ZĂĽrich, Switzerland) is the spiritual leader and founder of the new-revelationist (Neuoffenbarer) religious movement known as Fiat Lux (Latin for "let there be light").
Urien Urien, father of Owain mab Urien (later known as Ywain), was an historical king of Rheged in northern England and southern Scotland during the 6th century. He became the 'King Urien of Gore' of Arthurian legend.
Urien of Gwynedd In the fictional universe of the Deryni novels of Katherine Kurtz, Urien Haldane was the twenty-first King of Gwynedd, reigning from 994 to 1025. He was the sixteenth member of the House of Haldane to sit upon the throne of Gwynedd, and the tenth consecutive Haldane king since the end of the Festillic Interregnum.
Uriko the Half Beast Uriko (ウリコ) is a fictional character from the Bloody Roar series. She started out as a powerful final boss character in the first game and was changed completely to a weaker character to fit into the main reoccurring roster.
Urim and Thummim Urim and Thummim (Hebrew: , Standard Urim vəTummim Tiberian ; Arabic: اوريم وتميم, Ūrīm waṮummīm) — typically translated as "lights and perfections" or "revelation and truth" — were a scrying medium or divination process used by ancient Hebrews (usually Israelites) in revealing the will of God on a contested point of view or other problem. According to The Church of Jesus Christ of Latter-day Saints, they were also used to translate ancient manuscripts; however, their recorded use by Joseph Smith, Jr.
Urinal deodorizer block Urinal deodorizer blocks are the small disinfectant blocks found in urinals. Other informal terms include "urinal mint", "urinal cake," "toilet lolly" (Australian), "urinal puck" or "trough lolly" (chiefly British).
Urinalysis A urinalysis (or "UA") is an array of tests performed on urine and one of the most common methods of medical diagnosis. A part of a urinalysis can be performed by using urine dipsticks, in which the test results can be read as color changes.
Urinary bladder In the anatomy of mammals, the urinary bladder is a hollow, muscular and distensible or elastic organ that sits on the pelvic floor. It is the organ that collects urine excreted by the kidneys prior to disposal by urination.
Urinary Bladder (Fu) As distinct from the Western medical concept of Urinary bladder, this concept from Traditional Chinese Medicine is more a way of describing a set of interrelated functions than an anatomical organ. (See Zang Fu theory)
Urinary casts When present on microscopic evaluation during urinalysis, urinary casts hold significance as diagnostic and prognostic indicators of kidney disease. As reflected in their cylindrical form, casts are generated in the small tubules and collecting ducts of the kidney, and generally maintain their shape and composition as they pass the lower conveyances of the urinary system.
Urinary catheterization In urinary catheterization, a urinary catheter (such as a Foley catheter) is a plastic tube which is either inserted through a patient's urinary tract into their bladder or attached to a male patient's penis. A balloon located at the end of the catheter is usually inflated with sterile water to prevent the catheter from slipping out.
Urinary diversion Urinary diversion is any one of several surgical procedures to reroute urine flow from its normal pathway. It may be necessary for diseased or defective ureters, bladder or urethra, either temporarily or permanently.
Urinary retention Urinary retention also known as ischuria is a lack of ability to urinate. It is a common complication of benign prostatic hypertrophy (also known as benign prostatic hyperplasia or BPH), although anticholinergics may also play a role, and requires a catheter.
Urine collection device A urine collection device or UCD is a device that allows the collection of urine for analysis (as in medical or forensic urinalysis) or for purposes of simple elimination (as in vehicles engaged in long voyages and not equipped with toilets, particularly aircraft and spacecraft). UCDs of the latter type are sometimes called piddle packs.
Urine-indicator dye Urine-indicator dye is a fictional substance thought to form some sort of colored cloud in a pool to indicate the presence of urine. It's commonly believed to exist in the United States, Canada, and Spain amongst other countries.
Urinetown Urinetown the Musical is an award-winning satirical comedy musical, poking fun at local government, bureaucracy, corporate mismanagement, and petty-minded, smalltown politics. It rejects musical theatre convention, with parodies of Les Misérables, and also pokes fun at itself.
Urisk The Urisk is a Scottish faerie resembling a goat-man that haunts pools of water and waterfalls near the Scottish Highlands. He is said to be lonely and often seeks out human companionship; however, the unusual nature of his physical appearance often frightens away anyone he tries to interact with.
Urith Urith (more properly in Welsh Iwerydd, but also known in Latin as Hieritha and occasionally currupted to Erth), was a south-western Brythonic maiden, slain, possibly in the early 8th century and subsequently revered as a saint. The name is still common in the English county of Devon.
Uritorco The Cerro Uritorco is a mountain (cerro) and highest peak of the Sierras Chicas chain in the northwest of the province of CĂłrdoba, Argentina. It is located next to the Calabalumba River, 3 km from the center of the city of Capilla del Monte, and its summit is at 1,970 m above mean sea level.
Urizen In the complex mythology of William Blake, Urizen was the embodiment of conventional reason and law. He is usually depicted as a bearded old man; he sometimes bears architect's tools, to create and constrain the universe; or nets, with which he ensnares people in webs of law and conventional culture.
Urizura, Ibaraki Urizura (瓜連町; -machi) was a town located in Naka District, Ibaraki, Japan. On January 21, 2005 the town merged with the neighboring town of Naka forming the city of Naka and no longer exists as an independent municipality.
Urkesh Urkesh was a city situated at the base of the Taurus Mountains in what is now northern Syria near the modern city of Qamishli. It was founded during the third millennium BC by the Hurrians on a site which appears to have been inhabited on a small scale for centuries (at least since 5000 BC, the date of the earliest known remains found there).
Urkun Urkun (in English: "Exodus") is the Kyrgyz name for a 1916 revolt against Russian Tsarist forces and a mass flight to escape to China. The events occurred at the Bedel Pass border post near the Kyrgyz-Chinese border on July 30 1916.
Urkunden des Alten Reichs Urkunden des Alten Reichs is a collection of Egyptian documents written in Egyptian hieroglyphs edited by German Egyptologist Kurt Heinrich Sethe. Urkunden des Alten Reichs is the first book in the Urkunden des Ægyptischen Altertums series, and translates as "Documents from the Old Kingdom.
Urlingford Urlingford (Áth na nUrlainn in Irish) is a town in County Kilkenny in the southeastern part of the midlands of Irish midlands. The town lies on the main N8 Dublin-Cork road and is a bus hub, with major operator JJ Kavanagh based there.
Urmar Urmar is a well known Pashtun tribe from the linage of Sarban from Qais Abdur Rashid the father of the Pashtuns. The Urmar tribe has settled in 3 locations, The Waziristan Mountains, Logar Valley and close to Peshawar.
Urmia Urmia (Persian: ارومیه, Azeri: Urmu, Urumiyə, Kurdish: Wurmê, Syriac: ܐܘܪܡܝܐ; previously called رضائیه, Rezaiyeh) is a district and a city located in northwestern Iran. It is also the capital of the West Azerbaijan province, situated on the western side of Lake Urmia near the Turkish border.
Urmston Urmston is a district of the Metropolitan Borough of Trafford in Greater Manchester, England. With a population of 40,963 (2001 Census), it encompasses the smaller suburb of Davyhulme and the village of Flixton and lies 6 miles (10 km) from Manchester City Centre, on the River Mersey and the Manchester Ship Canal.
Urmston Road Urmston Road (Chinese: 龍鼓水道, literally 'Dragon Drum Channel') is a broad body of water between Lantau Island and Tuen Mun in Hong Kong. It forms an inshore passage between the northwest end of Victoria Harbour and the mouth of the Pearl River.
Urn An urn is a vase, ordinarily covered and without handles that usually has a narrowed neck above a footed pedestal. Knife urns on pedestals flanking a dining-room sideboard were an English innovation of the late 1760s that went out of fashion as sideboards with deep cupboard drawers were introduced at the end of the following decade.
Urna An Urna is a concave circular dot- an auspicious mark manifested by a whorl of white hair on the forehead between the eyebrows. It is often found on the 2nd and 3rd Century sculptures of the Buddha and Bodhisattvas.
Urocanic acid Urocanic acid is an intermediate in the catabolism of L-histidine, from which it is formed through the action of histidine ammonialyase (also known as histidase or histidinase) by elimination of ammonium. In the liver, urocanic acid is transformed by urocanate hydratase (or urocanase) to 4-imidazolone-5-propionic acid and subsequently to glutamic acid.
Urocortin Urocortin is a potent anorexigenic peptide of 40 amino acids that induces fed-like motor activity when administered centrally or peripherally in fasted animals. Urocortin belongs to the corticotropin-releasing factor (CRF) family that includes CRF, urotensin I, sauvagine, urocortin II and urocortin III.
Urocortin II Urocortin II is a 38 amino acid peptide that is a member of the CRF family of peptides. Unlike Urocortin I, Urocortin II is highly selective for the CRF2 receptor and does not show affintiy for the CRF binding protein.
Urocortin III Urocortin III is a 38 amino acid peptide that is a member of the CRF family of peptides. Unlike Urocortin I, and similar to Urocortin II, Urocortin III is highly selective for the CRF2 receptor and does not show affinity for the CRF binding protein.
Urocyon The genus Urocyon is a genus contains two (possibly three) Western Hemisphere foxes in the family Canidae, the Gray Fox (Urocyon cinereoargenteus) and the closely-related Island Fox (Urocyon littoralis). They are the only canids able to climb trees.
Urogenital opening The urogenital opening is where waste products of the body and reproductive fluids are expelled to the environment outside of the body cavity. In some lower organisms, including birds and many fishes, discharge from the urological, digestive, and reproductive systems empty into a common sac called the cloaca.
Urogenital system The urogenital system includes the sex organs and the urinary system of vertebrates. These anatomical structures are grouped together because of their proximity to each other and the use of common pathways, like the male urethra.
Uroguanylin Uroguanylin is a 16 amino acid peptide that is secreted by enterochromaffin cells in the duodenum and proximal small intestine. Guanylin acts as an agonist of the guanylyl cyclase receptor GC-C and regulates electrolyte and water transport in intestinal and renal epithelia.
Urokinase Urokinase (Abbokinase), also called urokinase-type Plasminogen Activator (uPA), is a serine protease (). Urokinase was originally isolated from human urine, but is present in several physiological locations, such as blood stream and the extracellular matrix.
Urokinase receptor The Urokinase receptor, also known as uPA receptor or uPAR, is multidomain glycoprotein tethered to the cell membrane with a glycosylphosphotidylinositol (GPI) anchor. uPAR was originally identified as a saturable binding site for urokinase on the cell surface.
Urology Urology is the field of medicine that focuses on the urinary tracts of males and females, and on the reproductive system of males. In men, the urinary system overlaps with the reproductive system, and in women the urinary tract opens into the vulva.
Uroš Knežević Uroš Knežević (1811-1876) (Урош Кнежевић) was a Serbian painter who was crucial in establishing the foundation of art in Serbia. He was born on January 2, 1811 in Sremski Karlovci (province of Vojvodina, then Austrian Empire, now Serbia), of father Teodor and mother Julijana.
Uroš Petrović Uros Petrovic is an Serbian fantasy author (born April 8, 1967, in Gornji Milanovac, Serbia), best known for his epic fantasy novel Aven (Original title - Aven i jazopas u Zemlji Vauka). He is also generally regarded as one of the finest fantasy writers currently writing in the Serbian language, and has been compared to such diverse figures as J.
Uroš Predić Uroš Predić (Orlovat, December 7 1857 - Belgrade, February 11 1953) was one of the greatest Serbian Realist painters, along with Paja Jovanović and Đorđe Krstić. Predic is perhaps best known for his monumental historical painting, Kosovo Maiden, as well as his many portraits.
Uromyrtus Uromyrtus is a genus of approximately 15-20 species in the myrtle family Myrtaceae. The greatest diversity of species are found in New Caledonia and the remainder are found in Australia, New Guinea and Malesia.
Uroplatus guentheri Uroplatus guentheri is a species of nocturnal gecko belonging to the genus Uroplatus, which is found in northwestern Madagascar in the area around Ankarafansika and near Morondava in western Madagascar. These geckos live on small trees and bushes.
Uropygid A uropygid, commonly known as a Whip Scorpion, is an invertebrate animal belonging to the former order "Uropygi" in the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda. They are also known as the vinegarone or vinegaroon (in Spanish, vinagrillo) because when agitated they can spray a vinegar-like mist.
Uros Uros is a group of 42 floating islets located in Lake Titicaca off Puno, Peru as well as to the pre-Inca people who fashioned them. The Uros originally created these artificial islands to escape the Inca, who dominated the mainland at the time; today they are best known as a major tourist destination.
Urosaurus The North American genus Urosaurus (the Tree and Brush Lizards) belongs to the New World Iguanian family Phrynosomatidae. They can be distinguished from members of the genus Sceloporus by the presence of a gular (under neck) fold and granular lateral scales.
Urosaurus graciosus The long-tailed brush lizard, Urosaurus graciosus, occurs in the Mojave and northern Colorado Deserts in the states of California, Arizona, Nevada, Sonora, and Baja California. This species received its common name due to its tail, which is more than twice the body length, and since it is almost always encountered on a tree or shrub.
Urosaurus ornatus The Tree lizard (Urosaurus ornatus) is a species of lizard native to the southwestern United States, and northern Mexico. The species has been used to research the physiological changes in the body during the fight-or-flight response as related to stress and aggressive competition [PMID 9145930].
Urpmi urpmi is a Mandriva Linux package management tool for installing, removing, updating and querying software packages of local or remote (networked) media. It wraps around the package manager rpm with the aim that the user should not have to suffer the often-encountered dependency hell.
Urraca Mesa Urraca Mesa is a large mesa located in northern New Mexico on the property of Philmont Scout Ranch. The mesa has a long "history" of mythical and supernatural associations, dating to the local indigenous tribes.

Information are taken from Wikipedia, the open encyclopedia, to which contribute many volunteers from around the whole world. Texts are available under the following conditions GNU Free Documentation License.