|
Janka Wood Hardness Rating
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 Indentation hardness, 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, or one square centimeter.) A common use of Janka hardness ratings is to determine whether a species is suitable for use as Wood flooring, flooring. For hardwood flooring, the test usually requires an 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, perpen ... [...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, or one 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 an 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 b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Ebony
''Swartzia panacoco'', known as panococo or Brazilian ebony, is a tree of the bean family, growing in Guyana, South America. Its wood is hard and durable. The heartwood ranges from an olive brown to a near black color and can have lighter or darker markings that are sharply separated from the sapwood, which is lighter and yellow in appearance. The wood of the panococo is used much like ebony Ebony is a dense black/brown hardwood, coming from several species in the genus '' Diospyros'', which also includes the persimmon tree. A few ''Diospyros'' species, such as macassar and mun ebony, are dense enough to sink in water. Ebony is fin ... but more limited due to smaller size logs. According to "The Treasury of Botany" published by Longmans, Green, and Co. of London in 1899 for John Lindley, Ph.D., F.R.S., F.L.S., an Emeritus Professor of Botany in University College, London, ''panococo'' is also a French name for '' Ormosia coccinea''. In 1997, it was listed in the IUCN Red ... [...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 l ... [...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 includes the persimmon tree. A few ''Diospyros'' species, such as macassar and mun ebony, are dense enough to sink in water. Ebony is finely textured and has a mirror finish when polished, making it valuable as an ornamental wood. It is often cited as one of the most expensive woods in the world. Etymology 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; '' D. humilis'' (Queensland ebony), native to Queensland, the Northern Territory, New Guinea and Timor; 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 ... [...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 in Mexico and 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 pinnate leaf petio ... [...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 h ... [...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 Rosewood is any of a number of richly hued hardwoods, often brownish with darker veining, but found in other colours. It is hard, tough, strong, and dense. True rosewoods come from trees of the genus '' Dalbergia'', but other woods are often ca ..., African blackwood, 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 ... [...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 .... The genus includes two species native to tropical South America and Costa Rica. * '' Bowdichia nitida'' Spruce ex Benth. – northern Brazil and northern Bolivia * '' Bowdichia virgilioides'' Kunth – Costa Rica to Bolivia, Paraguay, and southern Brazil References Leptolobieae Fabaceae genera Flora of Southern America Taxa named by Carl Sigismund Kunth {{Faboideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabebuia
''Tabebuia'' is a genus of flowering plants in the Family (biology), 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. ''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 Gardening, cultivated as flowering trees.David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. Etymology The genus name is derived from the Tupi people, Tupi words for "ant" and "wood", referring to the fact that many ''Tabebuia'' species have twigs with soft pith which forms hollows within which ants live, defending the trees from other herbivores. The ants are attracted to the plants by special extra-floral nectar glands ... [...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 peri ... * SS ''Bolivian'', later SS ''Alfios'', a British-built standard cargo ship {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey Ironbark
''Eucalyptus paniculata'', commonly known as grey ironbark, is a species of tree that is Endemism, 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 (botany), 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 (botany), petiole long. The flower buds are mostly arranged in groups of seven on a branched peduncle long, the individual buds on Pedicel (botany), ped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baillonella Toxisperma
''Baillonella'' is a genus of trees in the family Sapotaceae. ''Baillonella toxisperma'' (also called African pearwood, djave nut, or moabi) is only species in the genus. It is found in Angola, Cameroon, the Republic of the Congo, the Democratic Republic of the Congo, Gabon and Nigeria. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss. The moabi tree's nut oil is a key component of Baka and other indigenous people's subsistence. Conservation ''Baillonella toxisperma'' is declining over large parts of its range due to overexploitation, as it is both a highly desired hardwood for international export, and can provide a locally prized edible oil. Although minimum diameter logging restrictions are in place, the species appears to be in decline and has been classified as vulnerable by the IUCN. The building products retailer The Home Depot The Home Depot, Inc., often referred to as Home Depot, is an American multinational c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
