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Crotalus Cerastes
''Crotalus cerastes'', known as the sidewinder, horned rattlesnake or sidewinder rattlesnake,Wright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates. (7th printing, 1985). 1105 pp. . is a Crotalinae, pit viper species belonging to the genus ''Crotalus'' (the rattlesnakes), and is found in the desert regions of the Southwestern United States and northwestern Mexico. Like all other pit vipers, it is venomous snake, venomous. Three subspecies are currently recognized. Description A small species, adult specimens measure between in length. Most adults are in length.Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. . The females are larger than the males, which is unusual for this group of snakes.Stidworthy J. 1974. Snakes of the World. Grosset & Dunlap Inc. 160 pp. . Usually, 21 rows of keeled scales, keeled dorsal scales occur midbody.Behler JL, King FW. 1979. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Hallowell (herpetologist)
Edward Hallowell (1808 – February 20, 1860) was an American herpetologist and physician. He studied and practiced medicine in Philadelphia. He also was a renowned herpetologist who described 61 new species of reptiles. In 1851, Hallowell was elected as a member of the American Philosophical Society. Hallowell is commemorated in the scientific names of two species of frogs: ''Hyla hallowellii'' and ''Leptodactylus hallowelli.Edward Drinker Cope, Cope ED (1862). "On some new and little known American ANURA". ''Proc. Acad. Nat. Sci. Philadelphia'' 14: 151-159. ("... dedicated to the memory of the late Dr. Edward Hallowell, whom the author holds in grateful and respectful recollection ...", p. 153). Publications in the ''Proceedings of the Academy of Natural Sciences of Philadelphia'' *(1844). "Description of New Species of African reptiles". 2: 169-172. *(1844). "Description of new species of Reptiles from Africa". 2: 118-120. *(1844). "Descriptions of new species of African Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the most populated subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento is the state's capital, while Los Angeles is the most populous city in the state and the second most populous city in the country. San Francisco is the second most densely populated major city in the country. Los Angeles County is the country's most populous, while San Bernardino County is the largest county by area in the country. California borders Oregon to the north, Nevada and Arizona to the east, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cybernetics
Cybernetics is a wide-ranging field concerned with circular causality, such as feedback, in regulatory and purposive systems. Cybernetics is named after an example of circular causal feedback, that of steering a ship, where the helmsperson maintains a steady course in a changing environment by adjusting their steering in continual response to the effect it is observed as having. Cybernetics is concerned with circular causal processes such as steering however they are embodied,Ashby, W. R. (1956). An introduction to cybernetics. London: Chapman & Hall, p. 1. including in ecological, technological, biological, cognitive, and social systems, and in the context of practical activities such as designing, learning, managing, conversation, and the practice of cybernetics itself. Cybernetics' transdisciplinary and "antidisciplinary" character has meant that it intersects with a number of other fields, leading to it having both wide influence and diverse interpretations. Cybernetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle Of Repose
The angle of repose, or critical angle of repose, of a granular material is the steepest angle of descent or dip relative to the horizontal plane to which a material can be piled without slumping. At this angle, the material on the slope face is on the verge of sliding. The angle of repose can range from 0° to 90°. The morphology of the material affects the angle of repose; smooth, rounded sand grains cannot be piled as steeply as can rough, interlocking sands. The angle of repose can also be affected by additions of solvents. If a small amount of water is able to bridge the gaps between particles, electrostatic attraction of the water to mineral surfaces will increase the angle of repose, and related quantities such as the soil strength. When bulk granular materials are poured onto a horizontal surface, a conical pile will form. The internal angle between the surface of the pile and the horizontal surface is known as the angle of repose and is related to the density, su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitis Peringueyi
''Bitis peringueyi'', also known as the Peringuey's adder, Spawls S, Branch B (1995). ''The Dangerous Snakes of Africa''. Dubai: Ralph Curtis Books. Oriental Press. 192 pp. . Peringuey's desert adder or desert sidewinding adder, Mallow D, Ludwig D, Nilson G (2003). ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. . is a venomous viper species found in Namibia and southern Angola. No subspecies are currently recognized. Description ''Bitis peringueyi'' is a small snake with an average total length (including tail) of 20–25 cm (8–10 in), its maximum recorded total length is . The head is short and flat with eyes located on top of the head. The head is covered with strongly keeled scales, the smallest of which are located anteriorly. The eyes are separated by six to 9 scales, while each eye is surrounded by 10-13 scales. Two to four scales separate the suborbitals from the supralabials. The l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitis Caudalis
The horned adder (''Bitis caudalis'') is a viper species. It is found in the arid region of southwest Africa, in Angola, Botswana, Namibia; South Africa, and Zimbabwe. It is easily distinguished by the presence of a single, large horn-like scale over each eye. No subspecies are currently recognized. Like all other vipers, it is venomous. Common names The species is commonly known as the horned adder,Spawls S, Branch B. 1995. ''The Dangerous Snakes of Africa''. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. . horned puff adder,Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Krieger Publishing Company, Malabar, Florida. 359 pp. . or horned viper.U.S. Navy. 1991. ''Poisonous Snakes of the World''. US Government. New York: Dover Publications Inc. 203 pp. . Description A short, stout little viper, it usually averages in total length (body + tail). The largest specimen reported being seen is a female from southern Botswana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sidewinding
Sidewinding is a type of locomotion unique to snakes, used to move across loose or slippery substrates. It is most often used by the Saharan horned viper, '' Cerastes cerastes'', the Mojave sidewinder rattlesnake, '' Crotalus cerastes'', and the Namib desert sidewinding adder, '' Bitis peringueyi'', to move across loose desert sands, and also by Homalopsine snakes in Southeast Asia to move across tidal mud flats. Any number of caenophidian snakes can be induced to sidewind on smooth surfaces, though the difficulty in getting them to do so and their proficiency at it vary greatly. The method of movement is derived from lateral undulation, and is very similar, in spite of appearances. A picture of a snake performing lateral undulation would show something like a sine wave, with straight segments of the body having either a positive or negative slope. Sidewinding is accomplished by undulating vertically as well as laterally, with the head tracing out an ellipse in a vertical pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert
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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sidewinder Death Valley
Sidewinder may refer to: Snakes * Sidewinding, a form of locomotion used by some snakes ** '' Bitis peringueyi'' or sidewinding adder, a venomous adder species found in Namibia and southern Angola ** ''Cerastes cerastes'' or Saharan horned viper, a venomous pit viper found in northern Africa and parts of the Middle East ** ''Crotalus cerastes'' or sidewinder rattlesnake, a venomous pit viper species found in the southwestern United States Amusement park rides * Sidewinder (roller coaster element), an inversion involving a half-loop followed by a half-corkscrew * Sidewinder (Elitch Gardens), a roller coaster in Denver, Colorado * Sidewinder (Hersheypark), a roller coaster in Hershey, Pennsylvania * Sidewinder, a ride at Sandcastle Waterworld in Blackpool, England Computing * Microsoft SideWinder, a family of digital game controllers * Sidewinder, firewall software from Secure Computing (now McAfee) Fiction * Sidewinder (character), a Marvel supervillain * Budd (''Kill B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of Baja California (). It has an area of (3.57% of the land mass of Mexico) and comprises the northern half of the Baja California Peninsula, north of the 28th parallel, plus oceanic Guadalupe Island. The mainland portion of the state is bordered on the west by the Pacific Ocean; on the east by Sonora, the U.S. state of Arizona, and the Gulf of California; on the north by the U.S. state of California; and on the south by Baja California Sur. The state has an estimated population of 3,769,020 as of 2020, significantly higher than the sparsely populated Baja California Sur to the south, and similar to San Diego County, California, to its north. Over 75% o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Federal Entities of Mexico. The state is divided into 72 municipalities; the capital (and largest) city of which being Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales (on the Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua to the east, Baja California to the northwest and Sinaloa to the south. To the north, it shares the U.S.–Mexico border primarily with the state of Arizona with a small length with New Mexico, and on the west has a significant share of the coastline of the Gulf of California. Sonora's natural geography is divided into three parts: the Sierra Madre Occidental in the east of the state; plains and rolling hills in the center; and the coast on the Gulf of California. It is pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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