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Medemia
''Medemia argun'' is a rare species of the palm tree family ( Arecaceae) native to Egypt and Sudan. It is the only species in the genus ''Medemia''. The palm's dried dates have been found in ancient Egyptian tombs. Description ''Medemia argun'' is a robust, solitary-stemmed, dioecious palm up to tall with fan leaves forming a dense rounded crown. It grows in extreme desert conditions. It is typically found in dry river beds in which ground water is likely to occur. Distribution ''Medemia argun'' is found only in oases inside of the Nubian Desert, in southern Egypt and northern Sudan. The global population is divided in several sub-populations, with the most important (>90%) part of the population occurring in northern Sudan. The global population of ''Medemia argun'' was estimated at about 7,400 individuals in the middle of the 2000s. In Egypt, only 32 individuals were counted at Dungul Oases in 2007 (Ibrahim and Baker 2009). Its area of occupancy is restricted to 880 km². ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nubian Desert
The Nubian Desert ( ar, صحراء النوبة, ''Şaḩrā’ an Nūbyah'') is in the eastern region of the Sahara Desert, spanning approximately 400,000 km2 of northeastern Sudan and northern Eritrea, between the Nile and the Red Sea. The arid region is rugged and rocky and contains some dunes, it also contains many wadis that die out before reaching the Nile. The average annual rainfall in the Nubian Desert is less than . The native inhabitants of the area are the Nubians. The River Nile goes through most of its cataracts while traveling through the Nubian Desert. This is right before the Great Bend of the Nile. The Nubian Desert affected the civilization in ancient Egypt in many ways. Merchants and traders from ancient Egypt would travel over the Nubian Desert to buy gold, cloth, stone, food, and much more from the ancient civilization of Nubia. The largest city of the Nubian Desert is Port Sudan, located on the eastern end of the desert, on the Red Sea. Other importa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coryphoideae
The Coryphoideae is one of five subfamilies in the palm family, Arecaceae. It contains all of the genera with palmate leaves, excepting '' Mauritia'', '' Mauritiella'' and '' Lepidocaryum,'' all of subfamily Calamoideae, tribe Lepidocaryeae, subtribe Mauritiinae. However, all Coryphoid palm leaves have induplicate (V-shaped) leaf folds (excepting ''Guihaia''), while Calamoid palms have reduplicate (inverted V-shaped) leaf folds. Pinnate leaves do occur in Coryphoideae, in '' Phoenix'', '' Arenga'', '' Wallichia'' and bipinnate in '' Caryota''. Classification Subfamily Coryphoideae is divided into 8 tribes: * Sabaleae ** ''Sabal'' * Cryosophileae ** ''Schippia'' ** '' Trithrinax'' ** '' Zombia'' ** ''Coccothrinax'' ** '' Hemithrinax'' ** ''Thrinax'' ** '' Chelyocarpus'' ** '' Cryosophila'' ** '' Itaya'' ** '' Sabinaria'' * Phoeniceae ** '' Phoenix'' * Trachycarpeae ** '' Chamaerops'' ** ''Guihaia'' ** '' Trachycarpus'' ** '' Rhapidophyllum'' ** '' Maxburretia'' ** ''Rhapis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duke Paul Wilhelm Of Württemberg
Duke Friedrich ''Paul Wilhelm'' of Württemberg (german: Friedrich Paul Wilhelm, Herzog von Württemberg; 25 June 1797, in Bad Carlsruhe, Silesia, Kingdom of Prussia – 25 November 1860, in Mergentheim, Kingdom of Württemberg) was a member of the House of Württemberg and a Duke of Württemberg. Paul Wilhelm was a German naturalist and explorer, who in the early 19th century, undertook several expeditions in North America, North Africa, and Australia. In 1829, he discovered the sources of the Missouri River. Family Paul Wilhelm was the fifth and youngest child of Duke Eugen of Württemberg and his wife Princess Luise of Stolberg-Gedern. Through his father, Paul Wilhelm was a grandson of Frederick II Eugene, Duke of Württemberg and his wife Friederike Dorothea of Brandenburg-Schwedt. He was a nephew of Frederick of Württemberg, the first King of Württemberg. Expeditions Between the years 1822 to 1824, Paul Wilhelm's undertook his first major research trip to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (element)
Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum ( ) from the Greek words, ''hydor'' (water) and ''argyros'' (silver). A heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar ( mercuric sulfide). The red pigment vermilion is obtained by grinding natural cinnabar or synthetic mercuric sulfide. Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices, though concerns about the element's toxicity have led to mercury thermometers and sphygmomanometers being largely p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. Among other things, a taxonomy can be used to organize and index knowledge (stored as documents, articles, videos, etc.), such as in the form of a library classification system, or a search engine taxonomy, so that users can more easily find the information they are searching for. Many taxonomies are hierarchies (and thus, have an intrinsic tree structure), but not all are. Originally, taxonomy referred only to the categorisation of organisms or a particular categorisation of organisms. In a wider, more general sense, it may refer to a categorisation of things or concepts, as well as to the principles underlying such a categorisation. Taxonomy organizes taxonomic units known as "taxa" (singular "taxon")." Taxonomy is different from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Arecaceae Genera
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, ''Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of North Africa
Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring ( indigenous) native plants. The corresponding term for animals is ''fauna'', and for fungi, it is '' funga''. Sometimes bacteria and fungi are also referred to as flora as in the terms ''gut flora'' or ''skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Egypt
Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. The corresponding term for animals is ''fauna'', and for fungi, it is ''funga''. Sometimes bacteria and fungi are also referred to as flora as in the terms ''gut flora'' or ''skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Fruits
A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About one-third of the land surface of the Earth is arid or semi-arid. This includes much of the polar regions, where little precipitation occurs, and which are sometimes called polar deserts or "cold deserts". Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location. Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks, which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter, and the resulting fragments and rubble strewn over the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, Scramble for Africa, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aswan University
Aswan University is a university located in Aswan, Egypt. Established in 2012, it was previously known as the Aswan branch of the South Valley University. History Aswan University branch was established in 1976 as a branch of Assiut University. The study started on October of the academic year 1973/1974 in the faculty of education and the first bachelor was given in 1978 then started the enrollment in master degree in the faculty of science in the academic year 1977/1978 after that the enrollment in Ph.D. started in the academic year 1977/1978. In 1995 the presidential decree no. 23 of 1995 was issued to establish South Valley University South Valley University (SVU) is in Egypt and provides teaching and research facilities. The President of South Valley University is Prof. Dr. Youssuf Gherbawy. One of the country’s more modern higher education institutions, Egypt’s Sou ... and then Aswan branch was affiliated to it, new faculties were established (faculty of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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