Juan Ismael Calzada
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Juan Ismael Calzada
Juan Ismael Calzada is a Mexican botanist and collector. Dr Calzada is credited with the discovery of the elm '' Ulmus ismaelis'', named in his honour. Partial works * ''El estropajo''. Xalapa Instituto Nacional de Investigaciones sobre Recursos Bioticos. 1982. INIREB informa 52 References Year of birth missing (living people) Living people Mexican botanists National Autonomous University of Mexico Place of birth missing (living people) {{Mexico-botanist-stub ...
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Ulmus Ismaelis
''Ulmus ismaelis'' is a small tree discovered circa 1997 in southern Mexico by Ismael Calzada in riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons. The tree has since been found in Honduras and El Salvador.Linares, J. L. (2005). First record of Ulmus ismaelis (Ulmaceae) in Central America. ''Rev. Mex. Biodiv.'' vol.76 no.1 México. Jun. 2005 (in Spanish)/ref> The tree is exceptional in its habitat: dry places, sometimes with less than 50 cm (19.7 in) per annum precipitation, and comparatively low altitudes of 450–750 m (1475–2460 ft). Description Rarely growing to over 15 m (49.2 ft) in height, typically less than 10 m (32.8 ft) with a trunk d.b.h., diameter of 30 cm (1 ft); the tree has exfoliating orangish bark. The ovate leaves are coriaceous, less than 9.6 cm (3.8 in) in length by 4.6 cm (1.8 in) broad, acute at the apex, pinnately veined, on short 2–5 mm (0.08–0.2 in) petioles; the col ...
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Year Of Birth Missing (living People)
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons a ...
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Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ...
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Mexican Botanists
Mexican may refer to: Mexico and its culture *Being related to, from, or connected to the country of Mexico, in North America ** People *** Mexicans, inhabitants of the country Mexico and their descendants *** Mexica, ancient indigenous people of the Valley of Mexico ** Being related to the State of Mexico, one of the 32 federal entities of Mexico ** Culture of Mexico *** Mexican cuisine *** historical synonym of Nahuatl, language of the Nahua people (including the Mexica) Arts and entertainment * "The Mexican" (short story), by Jack London * "The Mexican" (song), by the band Babe Ruth * Regional Mexican, a Latin music radio format Films * ''The Mexican'' (1918 film), a German silent film * ''The Mexican'' (1955 film), a Soviet film by Vladimir Kaplunovsky based on the Jack London story, starring Georgy Vitsin * ''The Mexican'', a 2001 American comedy film directed by Gore Verbinski, starring Brad Pitt and Julia Roberts Other uses * USS ''Mexican'' (ID-1655), United State ...
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National Autonomous University Of Mexico
The National Autonomous University of Mexico (, UNAM) is a public university, public research university in Mexico. It has several campuses in Mexico City, and many others in various locations across Mexico, as well as a presence in nine countries. It also has 34 research institutes, 26 museums, and 18 historic sites. A portion of (University City), UNAM's main campus in Mexico City, is a UNESCO World Heritage site that was designed and decorated by some of Mexico's best-known architects and painters. The campus hosted the main events of the 1968 Summer Olympics, and was the birthplace of the Mexican Movement of 1968, student movement of 1968. All Mexican Nobel laureates have been alumni of UNAM. In 2009, the university was awarded the Princess of Asturias Awards, Prince of Asturias Award for Communication and Humanities. More than 25% of the total scientific papers published by Mexican academics come from researchers at UNAM. UNAM was founded in its modern form, on 22 Septemb ...
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