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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 Aquifer, ground water is likely to occur. Distribution ''Medemia argun'' is found only in oasis, 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 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 k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nubian Desert
The Nubian Desert ( ) is in the eastern region of the Sahara, 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, and 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, before the Great Bend of the Nile. The Nubian Desert affected the civilization of 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 Cairo–Cape Town Highway passes through the Nubian Desert. The largest city of the Nubian Desert is Port Sudan, at the eastern end of the desert on the Red Sea. Other important cities of the Nubi ... [...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''. Coryphoids are well-represented in the fossil record from the Late Cretaceous ( Campanian) onwards, primarily due to the presence of the form genus '' Sabalites''. __TOC__ Classification Subfamily Coryphoideae is divided into 8 tribes: * Sabaleae ** '' Sabal'' * Cryosophileae ** '' Schippia'' ** '' Trithrinax'' ** '' Zombia'' ** '' Coccothrinax'' ** '' Hemithrinax'' ** '' Thrinax'' ** '' Chelyocarpus'' ** '' Cryosophila'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duke Paul Wilhelm Of Württemberg
Duke Friedrich ''Paul Wilhelm'' of Württemberg (; 25 June 1797, in Pokój, Opole Voivodeship, Bad Carlsruhe, Silesia, Kingdom of Prussia – 25 November 1860, in Bad Mergentheim, Mergentheim, Kingdom of Württemberg) was a member of the List of rulers of Württemberg, House of Württemberg and a Duke of Württemberg. Paul Wilhelm was a German Natural history, 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 Eugene Frederick Henry, Duke of Württemberg, Duke Eugen of Württemberg and his wife Princess Louise of Stolberg-Gedern (1764-1834), 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 Kingdom o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (element)
Mercury is a chemical element; it has Symbol (chemistry), symbol Hg and atomic number 80. It is commonly known as quicksilver. A Heavy metal element, 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 Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification. Mercu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme of classes (a taxonomy) and the allocation of things to the classes (classification). Originally, taxonomy referred only to the classification of organisms on the basis of shared characteristics. Today it also has a more general sense. It may refer to the classification of things or concepts, as well as to the principles underlying such work. Thus a taxonomy can be used to organize species, documents, videos or anything else. A taxonomy organizes taxonomic units known as "taxa" (singular "taxon"). Many are hierarchies. One function of a taxonomy is to help users more easily find what they are searching for. This may be effected in ways that include a library classification system and a search engine taxonomy. Etymology The word was coined in 1813 by the Swiss botanist A ... [...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. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical system. ... [...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'' for purposes of specificity. 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) wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Egypt
The wildlife of Egypt is composed of the flora and fauna of this country in northeastern Africa and southwestern Asia, and is substantial and varied. Apart from the fertile Nile Valley, which bisects the country from south to north, the majority of Egypt's landscape is desert, with a few scattered oases. It has long coastlines on the Mediterranean Sea, the Gulf of Suez, the Gulf of Aqaba and the Red Sea. Each geographic region has a diversity of plants and animals each adapted to its own particular habitat. Geography Egypt is bordered by the Mediterranean Sea to the north, Libya to the west and Sudan to the south. To the east lies the Red Sea, and the Sinai Peninsula, the Asian part of the country, which is bordered by the Gaza Strip and Israel. Egypt is a transcontinental nation, providing a land bridge between Africa and Asia. This is traversed by the Suez Canal which connects the Mediterranean Sea with the Indian Ocean by way of the Red Sea. This results in the flora and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Fruits
A desert is a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. 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 climate, semi-arid. This includes much of the Polar regions of Earth, 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 strain the Rock (geology), 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 frag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With nearly billion people as of , it accounts for about of the world's human population. Demographics of Africa, Africa's population is the youngest among all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Based on 2024 projections, Africa's population will exceed 3.8 billion people by 2100. Africa is the least wealthy inhabited continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including Geography of Africa, geography, Climate of Africa, climate, corruption, Scramble for Africa, colonialism, the Cold War, and neocolonialism. Despite this lo ... [...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 1974 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's 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 and then Aswan branch was affiliated to it, new faculties were established (faculty of arts – faculty of social work – faculty of engineering). In 2012 Aswan University was constructed as a governmental university by the presidential decree no. 311 in 2012 and it now included 15 faculties (the faculties of arts, education, science, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
