Misplaced Pages

#657342

40-598: [REDACTED] Look up eburnean in Wiktionary, the free dictionary. Eburnean means made of, or relating to ivory . Other uses: Eburnean orogeny , a series of major tectonic events around 2100 Ma Eburnean Democratic Bloc , a splinter group of the Democratic Party of Côte d'Ivoire formed in 1949 Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with

80-401: A protective measure against predators. Alongside the use of protective measures, the tusks were used during the mating season to be used for dominance, as their antlers were smaller back then compared to now. Evolution made the antlers bigger and the use of their tusks diminished as antlers grew, making them nothing more than teeth in their mouths. These teeth have the same chemical compound as

120-483: A range of items from ivory carvings to false teeth , piano keys , fans , and dominoes . Elephant ivory is the most important source, but ivory from mammoth , walrus , hippopotamus , sperm whale , orca , narwhal and warthog are used as well. Elk also have two ivory teeth, which are believed to be the remnants of tusks from their ancestors. The national and international trade in natural ivory of threatened species such as African and Asian elephants

160-549: A rock crusher. The Wildlife Conservation Society has pointed out that the global ivory trade leads to the slaughter of up to 35,000 elephants a year in Africa. In June 2018, Conservative MEPs' Deputy Leader Jacqueline Foster MEP urged the EU to follow the UK's lead and introduce a tougher ivory ban across Europe. China was the biggest market for poached ivory but announced they would phase out

200-400: A short description of the ancient world, with remarks on historical, social, religious, and natural history questions. The greater part is taken from Pliny 's Natural History and the geography of Pomponius Mela . According to Mommsen, Solinus also relied upon a chronicle (possibly by Cornelius Bocchus ) and a chorographia Pliniana , an epitome of Pliny's work with additions made about

240-503: A strong anisotropy to ivory's mechanical characteristics. Separate hardness measurements on three orthogonal tusk directions indicated that circumferential planes of tusk had up to 25% greater hardness than radial planes of the same specimen. During hardness testing, inelastic and elastic recovery was observed on circumferential planes while the radial planes displayed plastic deformation. This implies that ivory has directional viscoelasticity . These anisotropic properties can be explained by

280-517: Is illegal. The word ivory ultimately derives from the ancient Egyptian âb, âbu ('elephant'), through the Latin ebor- or ebur . Both the Greek and Roman civilizations practiced ivory carving to make large quantities of high value works of art, precious religious objects, and decorative boxes for costly objects. Ivory was often used to form the white of the eyes of statues. There

320-641: Is some evidence of either whale or walrus ivory used by the ancient Irish. Solinus , a Roman writer in the 3rd century claimed that the Celtic peoples in Ireland would decorate their sword-hilts with the 'teeth of beasts that swim in the sea'. Adomnan of Iona wrote a story about St Columba giving a sword decorated with carved ivory as a gift that a penitent would bring to his master so he could redeem himself from slavery. The Syrian and North African elephant populations were reduced to extinction, probably due to

360-702: Is used today to make handcrafted knives and similar implements. Mammoth ivory is rare and costly because mammoths have been extinct for millennia, and scientists are hesitant to sell museum-worthy specimens in pieces. Some estimates suggest that 10 or more million mammoths are still buried in Siberia. Fossil walrus ivory from animals that died before 1972 is legal to buy and sell in the United States, unlike many other types of ivory. The ancestors of elk had teeth, also known as elk ivory, that protruded outwards, similar to animals that have tusks, they were used as

400-434: The ivory nut palm commonly found in coastal rainforests of Ecuador , Peru and Colombia . Gaius Julius Solinus Gaius Julius Solinus , better known simply as Solinus , was a Latin grammarian , geographer, and compiler who probably flourished in the early 3rd century AD. Historical scholar Theodor Mommsen dates him to the middle of the 3rd century. Solinus was the author of De mirabilibus mundi ("On

440-555: The "Accra Declaration" calling for a total ivory trade ban, and twenty range states attended a meeting in Kenya calling for a 20-year moratorium in 2007. Methods of obtaining ivory can be divided into: The use and trade of elephant ivory have become controversial because they have contributed to seriously declining elephant populations in many countries. It is estimated that consumption in Great Britain alone in 1831 amounted to

SECTION 10

#1732772817658

480-523: The Indian elephant in their annual tribute caravans to China. Chinese craftsmen carved ivory to make everything from images of deities to the pipe stems and end pieces of opium pipes . In Japan, ivory carvings became popular in the 17th century during the Edo period , and many netsuke and kiseru , on which animals and legendary creatures were carved, and inro , on which ivory was inlaid, were made. From

520-689: The Philippines, ivory was also used to craft the faces and hands of Catholic icons and images of saints prevalent in the Santero culture. Tooth and tusk ivory can be carved into a vast variety of shapes and objects. Examples of modern carved ivory objects are okimono , netsukes , jewelry, flatware handles, furniture inlays, and piano keys. Additionally, warthog tusks, and teeth from sperm whales , orcas and hippos can also be scrimshawed or superficially carved, thus retaining their morphologically recognizable shapes. As trade with Africa expanded during

560-570: The Wonders of the World") which circulated under the titles Collectanea Rerum Memorabilium ("A Collection of Curious Things"), Mirabilia , and Polyhistor , the latter title being favoured by the author himself. The work is indeed a description of curiosities in a chorographic framework. Adventus, to whom it is dedicated, is identified with Oclatinius Adventus , Roman consul in AD 218. It contains

600-492: The ban, disallowing any sales of ivory on eBay. A more recent sale in 2008 of 108 tonnes from the three countries and South Africa took place to Japan and China. The inclusion of China as an "approved" importing country created enormous controversy, despite being supported by CITES, the World Wide Fund for Nature and Traffic . They argued that China had controls in place and the sale might depress prices. However,

640-686: The deaths of nearly 4,000 elephants. In 1975, the Asian elephant was placed on Appendix I of the Convention on International Trade in Endangered Species ( CITES ), which prevents international trade between member states of species that are threatened by trade. The African elephant was placed on Appendix I in January 1990. Since then, some southern African countries have had their populations of elephants "downlisted" to Appendix II, allowing

680-669: The demand for ivory in the Classical world . The Chinese have long valued ivory for both art and utilitarian objects. Early reference to the Chinese export of ivory is recorded after the Chinese explorer Zhang Qian ventured to the west to form alliances to enable the eventual free movement of Chinese goods to the west; as early as the first century BC, ivory was moved along the Northern Silk Road for consumption by western nations. Southeast Asian kingdoms included tusks of

720-514: The desired form. Other applications, such as ivory piano keys, introduce repeated wear and surface handling of the material. It is therefore essential to consider the mechanical properties of ivory when designing alternatives. Elephant tusks are the animal's incisors, so the composition of ivory is unsurprisingly similar to that of teeth in several other mammals. It is composed of dentine, a biomineral composite constructed from collagen fibers mineralized with hydroxyapatite . This composite lends ivory

760-603: The domestic trade of non-ivory items; there have also been two "one off" sales of ivory stockpiles. In June 2015, more than a ton of confiscated ivory was crushed in New York City 's Times Square by the Wildlife Conservation Society to send a message that the illegal trade will not be tolerated. The ivory, confiscated in New York and Philadelphia , was sent up a conveyor belt into

800-586: The first half of the 20th century, Kenyan elephant herds were devastated because of demand for ivory, to be used for piano keys. During the Art Deco era from 1912 to 1940, dozens (if not hundreds) of European artists used ivory in the production of chryselephantine statues. Two of the most frequent users of ivory in their sculptured artworks were Ferdinand Preiss and Claire Colinet . While many uses of ivory are purely ornamental in nature, it often must be carved and manipulated into different shapes to achieve

840-535: The first part of the 1800s, ivory became readily available. Up to 90 percent of the ivory imported into the United States was processed, at one time, in Connecticut where Deep River and Ivoryton in 1860s became the centers of ivory milling, in particular, due to the demand for ivory piano keys. Ivory usage in the last thirty years has moved towards mass production of souvenirs and jewelry. In Japan,

SECTION 20

#1732772817658

880-612: The impressive mechanical properties—high stiffness, strength, hardness, and toughness—required for its use in the animal's day-to-day activities. Ivory has a measured hardness of 35 on the Vickers scale , exceeding that of bone. It also has a flexural modulus of 14 GPa, a flexural strength of 378 MPa a fracture toughness of 2.05 MPam . These measured values indicate that ivory mechanically outperforms most of its most common alternatives, including celluloid plastic and polyethylene terephthalate . Ivory's mechanical properties result from

920-527: The increase in wealth sparked consumption of solid ivory hanko – name seals – which before this time had been made of wood. These hanko can be carved out in a matter of seconds using machinery and were partly responsible for massive African elephant decline in the 1980s, when the African elephant population went from 1.3 million to around 600,000 in ten years. Before plastics were introduced, ivory had many ornamental and practical uses, mainly because of

960-423: The ivory found in the highly used and poached elephant tusks, making it another good alternative when it comes to taking ivory as the teeth can be possibly removed without harming the elk themselves. Among Indian tribes, elk teeth has major significance when it comes to jewelry. Among women, men wore them as well. Either through bracelets, earrings, and chokers, there was deeper meaning for both men and women within

1000-490: The legal domestic manufacture and sale of ivory products in May 2015. In September of the same year, China and the U.S. announced they would "enact a nearly complete ban on the import and export of ivory." The Chinese market has a high degree of influence on the elephant population. Trade in the ivory from the tusks of dead woolly mammoths frozen in the tundra has occurred for 300 years and continues to be legal . Mammoth ivory

1040-541: The microstructure of the dentine tissue. It is thought that the structural arrangement of mineralized collagen fibers could contribute to the checkerboard-like Schreger pattern observed in polished ivory samples. This is often used as an attribute in ivory identification. As well as being an optical feature, the Schreger pattern could point towards a micropattern well-designed to prevent crack propagation by dispersing stresses. Additionally, this intricate microstructure lends

1080-553: The mid-1800s, the new Meiji government's policy of promoting and exporting arts and crafts led to the frequent display of elaborate ivory crafts at World's fair . Among them, the best works were admired because they were purchased by Western museums, wealthy people, and the Japanese Imperial Family . The Buddhist cultures of Southeast Asia , including Myanmar , Thailand , Laos and Cambodia , traditionally harvested ivory from their domesticated elephants. Ivory

1120-454: The piano industry abandoned ivory as a key covering material in the 1970s. Ivory can be taken from dead animals – however, most ivory came from elephants that were killed for their tusks. For example, in 1930 to acquire 40 tons of ivory required the killing of approximately 700 elephants. Other animals which are now endangered were also preyed upon, for example, hippos, which have very hard white ivory prized for making artificial teeth. In

1160-567: The price of ivory in China has skyrocketed. Some believe this may be due to deliberate price fixing by those who bought the stockpile, echoing the warnings from the Japan Wildlife Conservation Society on price-fixing after sales to Japan in 1997, and monopoly given to traders who bought stockpiles from Burundi and Singapore in the 1980s. A 2019 peer-reviewed study reported that the rate of African elephant poaching

1200-449: The reinforcement of collagen fibers in the composite oriented along the circumference. Owing to the rapid decline in the populations of the animals that produce it, the importation and sale of ivory in many countries is banned or severely restricted. In the ten years preceding a decision in 1989 by CITES to ban international trade in African elephant ivory, the population of African elephants declined from 1.3 million to around 600,000. It

1240-652: The retrieval of the material from animals. Tagua nuts can also be carved like ivory. The trade of finished goods of ivory products has its origins in the Indus Valley . Ivory is a main product that is seen in abundance and was used for trading in Harappan civilization . Finished ivory products that were seen in Harappan sites include kohl sticks, pins , awls, hooks , toggles, combs , game pieces, dice , inlay and other personal ornaments. Ivory has been valued since ancient times in art or manufacturing for making

Eburnean - Misplaced Pages Continue

1280-654: The sale of 49 tonnes of ivory from Zimbabwe, Namibia and Botswana in 1997 to Japan. In 2007, under pressure from the International Fund for Animal Welfare , eBay banned all international sales of elephant-ivory products. The decision came after several mass slaughters of African elephants, most notably the 2006 Zakouma elephant slaughter in Chad . The IFAW found that up to 90% of the elephant-ivory transactions on eBay violated their own wildlife policies and could potentially be illegal. In October 2008, eBay expanded

1320-467: The time of Hadrian . Schanz, however, suggests the Roma and Prata of Suetonius . A greatly revised version of his original text was made, perhaps by Solinus himself. This version contains a letter that Solinus wrote as an introduction to the work, which gives the work the title Polyhistor . Both versions of the work circulated widely and eventually Polyhistor was taken for the author's name. It

1360-552: The title Eburnean . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Eburnean&oldid=512966620 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Ivory Besides natural ivory, ivory can also be produced synthetically, hence (unlike natural ivory) not requiring

1400-399: The tribes. For the women, it was believed that it would bring in good luck and good health. As for the men, it was seen that they were a good hunter. Ivory can also be produced synthetically. A species of hard nut is gaining popularity as a replacement for ivory, although its size limits its usability. It is sometimes called vegetable ivory , or tagua, and is the seed endosperm of

1440-402: The white color it presents when processed. It was formerly used to make cutlery handles, billiard balls , piano keys , Scottish bagpipes , buttons and a wide range of ornamental items. Synthetic substitutes for ivory in the use of most of these items have been developed since 1800: the billiard industry challenged inventors to come up with an alternative material that could be manufactured ;

1480-857: Was found by investigators from the Environmental Investigation Agency (EIA) that CITES sales of stockpiles from Singapore and Burundi (270 tonnes and 89.5 tonnes respectively) had created a system that increased the value of ivory on the international market, thus rewarding international smugglers and giving them the ability to control the trade and continue smuggling new ivory. Since the ivory ban, some Southern African countries have claimed their elephant populations are stable or increasing, and argued that ivory sales would support their conservation efforts. Other African countries oppose this position, stating that renewed ivory trading puts their own elephant populations under greater threat from poachers reacting to demand. CITES allowed

1520-595: Was in decline, with the annual poaching mortality rate peaking at over 10% in 2011 and falling to below 4% by 2017. The study found that the "annual poaching rates in 53 sites strongly correlate with proxies of ivory demand in the main Chinese markets, whereas between-country and between-site variation is strongly associated with indicators of corruption and poverty." Based on these findings, the study authors recommended action to both reduce demand for ivory in China and other main markets and to decrease corruption and poverty in Africa. In 2006, nineteen African countries signed

1560-590: Was popular in the Middle Ages , hexameter abridgments being current under the names of Theodericus and Petrus Diaconus . The commentary by Saumaise in his Plinianae Exercitationes (1689) was considered indispensable; the 1895 edition by Mommsen includes a valuable introduction on the manuscripts, the authorities used by Solinus, and subsequent compilers. See also Teuffel , History of Roman Literature (English translation, 1900), 389; and Schanz , Geschichte der Römischen Litteratur (1904), iv. I. There

1600-482: Was prized for containers due to its ability to keep an airtight seal. It was also commonly carved into elaborate seals utilized by officials to "sign" documents and decrees by stamping them with their unique official seal. In Southeast Asian countries, where Muslim Malay peoples live, such as Malaysia , Indonesia and the Philippines , ivory was the material of choice for making the handles of kris daggers. In

#657342