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Janka Hardness Test
The Janka hardness test (; ), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an steel ball halfway into a sample of wood. (The diameter was chosen to produce a circle with an area of 100 square millimeters ne square centimeter) A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. For hardwood flooring, the test usually requires a sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037. When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the grain, is said to be of "side ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janka Hardness Test
The Janka hardness test (; ), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an steel ball halfway into a sample of wood. (The diameter was chosen to produce a circle with an area of 100 square millimeters ne square centimeter) A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. For hardwood flooring, the test usually requires a sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037. When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the grain, is said to be of "side ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handroanthus
''Handroanthus'' is a genus of flowering plants in the family Bignoniaceae.David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. It consists of 30 species of trees, known in Latin America by the common names poui, pau d'arco, or ipê. The latter sometimes appears as epay or simply ipe (unaccented) in English. The large timber species are sometimes called lapacho or guayacan, but these names are more properly applied to the species ''Handroanthus lapacho'' and '' Handroanthus guayacan'', respectively. The name ''Handroanthus'' was established in 1970,''Handroanthus'' in International Plant Names Index. (see ''External links'' below). but was not generally accepted. In 1992, its species were included in ''Tabebuia'' in the most recent revision of that genus.Alwyn H. Gentry. 1992. "Bignoniaceae: Part II (Tribe Tecomeae)". ''Flora Neotropica'' Monograph 25(part 2):1-150. ''Handroanthus'' was resurrected in 2007 when a compariso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Redwood
Brazilian commonly refers to: * Something of, from or relating to Brazil * Brazilian Portuguese, the dialect of the Portuguese language used mostly in Brazil * Brazilians, the people (citizens) of Brazil, or of Brazilian descent Brazilian may also refer to: Sports * Brazilian football, see football in Brazil * Brazilian jiu-jitsu, a martial art and combat sport system *''The Brazilians'', a nickname for South African football association club Mamelodi Sundowns F.C. due to their soccer kits which resembles that of the Brazilian national team Other uses * Brazilian waxing, a style of Bikini waxing * Brazilian culture, describing the Culture of Brazil * "The Brazilian "The Brazilian" is an instrumental piece by the English band Genesis that concludes their 1986 album '' Invisible Touch''. The song features experimental sounds and effects. The band wrote two instrumental pieces for the album, this and "Do the N ...", a 1986 instrumental by Genesis * Brazilian barbecue, known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manilkara Bidentata
''Manilkara bidentata'' is a species of ''Manilkara'' native to a large area of northern South America, Central America and the Caribbean. Common names include bulletwood, balatá, ausubo, massaranduba, quinilla, and (ambiguously) " cow-tree". Description The balatá is a large tree, growing to tall. The leaves are alternate, elliptical, entire, and long. The flowers are white, and are produced at the beginning of the rainy season. The fruit is a yellow berry, in diameter, which is edible; it contains one (occasionally two) seed(s). Its latex is used industrially for products such as chicle. Uses The latex is extracted in the same manner in which sap is extracted from the rubber tree. It is then dried to form an inelastic rubber-like material. It is almost identical to gutta-percha (produced from a closely related southeast Asian tree), and is sometimes called ''gutta-balatá''. Balatá was often used in the production of high-quality golf balls, to use as the outer layer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ebony
Ebony is a dense black/brown hardwood, coming from several species in the genus '' Diospyros'', which also contains the persimmons. Unlike most woods, ebony is dense enough to sink in water. It is finely textured and has a mirror finish when polished, making it valuable as an ornamental wood. The word ''ebony'' comes from the Ancient Egyptian ', through the Ancient Greek ('), into Latin and Middle English. Species Species of ebony include ''Diospyros ebenum'' (Ceylon ebony), native to southern India and Sri Lanka; '' D. crassiflora'' (Gabon ebony), native to western Africa; and '' D. celebica'' (Sulawesi ebony), native to Indonesia and prized for its luxuriant, multi-colored wood grain. Mauritius ebony, '' D. tessellaria'', was largely exploited by the Dutch in the 17th century. Some species in the genus yield an ebony with similar physical properties, but striped rather than the even black of ''D. ebenum''. Uses Ebony has a long history of use, and carved pieces hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olneya Tesota
''Olneya tesota'' is a perennial flowering tree of the family Fabaceae, legumes (peas, beans, etc.), which is commonly known as ironwood, desert ironwood, or palo fierro in Spanish. It is the only species in the monotypic genus ''Olneya''. This tree is part of the western Sonoran Desert complex in the Southwestern United States. Description The desert ironwood grows as a bush or tree, reaching heights of about and average trunk diameters of about . Exceptionally, in larger protected washes it can reach greater height and a more massive trunk. In younger trees, the bark is gray, shiny, and smooth; in older trees the bark is broken open. The tree is evergreen, but can lose its leaves if temperatures fall below . In continual drought conditions the leaves will be lost. The leaves are bluish-green and pinnately compound. They are arranged on a petiole, long, with 6–9 leaflets (or variously up to 15, with 7 opposite and one terminal), each measuring . At the base of each pinn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipteryx
''Dipteryx'' is a genus containing a number of species of large trees and possibly shrubs. It belongs to the "papilionoid" subfamily – Faboideae – of the family Fabaceae. This genus is native to South and Central America and the Caribbean. Formerly, the related genus '' Taralea'' was included in ''Dipteryx''. Description The largest members of ''Dipteryx'' are canopy-emergent trees of tropical rainforests. The tonka bean (''D. odorata'') is grown for its fragrant seeds. ''Baru'' (''D. alata'') is the only species which found in drier, seasonal areas, growing in the cerrado of Brazil; its fruit and seeds are used as food and fodder. Several species are used for timber, of which almendro (''D. oleifera'') wood is considered desirable, especially locally. ''Dipteryx'' can be distinguished from other members of the Dipterygeae by its compound leaves with asymmetric leaflets caused due to an eccentric primary vein, a drupaceous fruit, seeds with a leathery skin, a hilum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingwood (wood)
Kingwood is a classic furniture wood, almost exclusively used for inlays on very fine furniture. It was the most expensive wood in general use for furniture making in the seventeenth century, at which time it was known as princes wood. It is brownish-purple with many fine darker stripes and occasional irregular swirls. Occasionally it contains pale streaks of a similar colour to the sapwood, as in the picture. It is yielded by a smallish tree, '' Dalbergia cearensis'', restricted to a small area in Brazil. Other woods from the same genus are cocobolo, rosewood, African blackwood ''Dalbergia melanoxylon'' (African blackwood, grenadilla, or mpingo) is a flowering plant in the family Fabaceae, native to seasonally dry regions of Africa from Senegal east to Eritrea and south to the north-eastern parts of South Africa. The ..., Bombay blackwood and Brazilian tulipwood. The wood is very dense and hard, and can be brought to a spectacular finish. It turns well, but due to its de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowdichia
''Bowdichia'' is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae The Faboideae are a subfamily of the flowering plant family Fabaceae or Leguminosae. An acceptable alternative name for the subfamily is Papilionoideae, or Papilionaceae when this group of plants is treated as a family. This subfamily is widely .... References Leptolobieae Fabaceae genera {{Faboideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabebuia
''Tabebuia'' is a genus of flowering plants in the family Bignoniaceae.Eberhard Fischer, Inge Theisen, and Lúcia G. Lohmann. 2004. "Bignoniaceae". pages 9-38. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). ''The Families and Genera of Vascular Plants'' volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. The common name "roble" is sometimes found in English. ''Tabebuias'' have been called "trumpet trees", but this name is usually applied to other trees and has become a source of confusion and misidentification. ''Tabebuia'' consists almost entirely of trees, but a few are often large shrubs. A few species produce timber, but the genus is mostly known for those that are cultivated as flowering trees.David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. ''Tabebuia'' is native to the American tropics and subtropics from Mexico and the Caribbean to Argentina. Most of the species are from Cuba and H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolivian Cherry
Bolivian may refer to: * Something of, or related to Bolivia ** Bolivian people ** Demographics of Bolivia ** Culture of Bolivia Bolivia is a country in South America, bordered by Brazil to the north and east, Paraguay and Argentina to the south, Chile to the west, and Peru to the west. The cultural development of what is now Bolivia is divided into three distinct period ... * SS ''Bolivian'', a British-built standard cargo ship {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey Ironbark
''Eucalyptus paniculata'', commonly known as grey ironbark, is a species of tree that is endemic to New South Wales. It has dark-coloured, deeply furrowed ironbark on the trunk and branches, lance-shaped to curved adult leaves, flower buds in groups of seven on a branched peduncle, white flowers and conical, hemispherical or cup-shaped fruit. Description ''Eucalyptus paniculata'' is a tree that typically grows to a height of and forms a lignotuber. It has grey to black or brownish, deeply furrowed ironbark on the trunk and branches. Young plants and coppice regrowth have egg-shaped to lance-shaped leaves that are a lighter shade of green on the lower side, long and wide. Adult leaves are glossy green, a lighter shade on the lower side, lance-shaped to curved, long and wide, tapering to a petiole long. The flower buds are mostly arranged in groups of seven on a branched peduncle long, the individual buds on pedicels long. Mature buds are oval to diamond-shaped, long and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
