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Okoumé Tree
''Aucoumea klaineana'' (angouma, gaboon, or okoumé) is a tree in the family Burseraceae, native to equatorial west Africa in Gabon, the Republic of the Congo, and Río Muni. It is a large hardwood tree growing to tall, rarely larger, with a trunk diameter above the often large basal buttresses. The tree generally grows in small stands, with the roots of the trees intertwined with neighboring trees. In Gabon, it is the primary timber species. Uses It is a weak wood, with low decay resistance and moderate dimensional stability. The major use of gaboon is in the manufacture of plywood. It is about 8–12% lighter than the other main marine plywood, meranti, that is commonly used in boatbuilding, but is not as stiff. This is useful when a boat design calls for tight-radius bends, such as near the bow in a single chine design, because of its flexibility. However, it does not resist impact damage as well as meranti. It is often sheathed in epoxy resin to increase strength and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Baptiste Louis Pierre
Jean Baptiste Louis Pierre (23 October 1833 – 30 October 1905), also known as J. B. Louis Pierre, was a French Botany, botanist known for his Asian studies. Early life Pierre was born in Saint-André, Réunion, Saint-André, Réunion, and studied in Paris before working in the botanical gardens of Calcutta, India. Career In 1864 he founded the Saigon Zoo and Botanical Gardens, which he directed until 1877. Afterward, he returned to Paris and lived at 63 rue Monge, near the Paris Herbarium. In 1883, he moved to Charenton, then to Villeneuve-Saint-Georges, then (circa 1893) to Saint-Mandé. Finally, he settled at 18 rue Cuvier in Paris, where he resided until his death. Pierre made many scientific explorations in tropical Asia. His publications include the ''Flore forestière de la Cochinchine'' (1880-1907), an article "Sur les plantes à caoutchouc de l'Indochine" (''Revue des cultures coloniales'', 1903) and the section on Sapotaceae in the ''Notes botaniques'' (1890-18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood Veneer
Veneer refers to thin slices of wood and sometimes bark that typically are glued onto core panels (typically, wood, particle board or medium-density fiberboard) to produce flat panels such as doors, tops and panels for cabinets, parquet floors and parts of furniture. They are also used in marquetry. Unlike laminates, no two veneer sheets look the same. Plywood consists of three or more layers of veneer. Normally, each is glued with its grain at right angles to adjacent layers for strength. Veneer beading is a thin layer of decorative edging placed around objects, such as jewelry boxes. Veneer is also used to replace decorative papers in wood veneer high pressure laminate. Background Veneering dates back to at least the ancient Egyptians who used expensive and rare wood veneers over cheaper timbers to produce their furniture and sarcophagi. During the Roman Empire, Romans also used veneered work in mass quantities. Production Veneer is obtained either by "peeling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Gabon
The wildlife of Gabon is composed of its flora and fauna. Gabon is a largely low-lying country with a warm, humid climate. Much of the country is still covered by tropical rainforest and there are also grasslands, savannas, large rivers and coastal lagoons. Overview Wildlife includes forest elephants, forest buffalos, various antelope and monkey species, sitatungas, leopards, three species of crocodiles, chimpanzees and gorillas, and several marine turtle species which nest along the coast. As of 2002, there were at least 190 species of mammals. Fauna Mammals Gabon has important populations of many mammals including about 35,000 gorillas, 50,000 forest elephants and 64,000 chimpanzees. About a quarter of Africa's gorillas live in Gabon. Other large mammals include the hippopotamus, forest buffalo, bongo and red river hog. A variety of monkeys occur, including the endemic sun-tailed monkey, and the near-endemic mandrill and white-collared mangabey (here near-endemic meanin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Plants
Vulnerable may refer to: General *Vulnerability *Vulnerability (computing) * Vulnerable adult *Vulnerable species Music Albums * ''Vulnerable'' (Marvin Gaye album), 1997 * ''Vulnerable'' (Tricky album), 2003 * ''Vulnerable'' (The Used album), 2012 Songs * "Vulnerable" (Roxette song), 1994 * "Vulnerable" (Selena Gomez song), 2020 * "Vulnerable", a song by Secondhand Serenade from '' Awake'', 2007 * "Vulnerable", a song by Pet Shop Boys from '' Yes'', 2009 * "Vulnerable", a song by Tinashe from '' Black Water'', 2013 * "Vulnerability", a song by Operation Ivy from ''Energy'', 1989 Other uses * Climate change vulnerability Climate change vulnerability is a concept that describes how strongly people or ecosystems are likely to be affected by climate change. Its formal definition is the " propensity or predisposition to be adversely affected" by climate change. It can ..., vulnerability to anthropogenic climate change used in discussion of society's response to climate change * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of Africa
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only plants that are usable as lumber, or only plants above a specified height. But wider definitions include taller palms, tree ferns, bananas, and bamboos. Trees are not a monophyletic taxonomic group but consist of a wide variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some trees reaching several thousand years old. Trees evolved around 400 million years ago, and it is estimated that there are around three trillion mature trees in the world currently. A tree typically has many secondary branches supported clear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mahogany
Mahogany is a straight- grained, reddish-brown timber of three tropical hardwood species of the genus ''Swietenia'', indigenous to the AmericasBridgewater, Samuel (2012). ''A Natural History of Belize: Inside the Maya Forest''. Austin: University of Texas Press. pp. 164–165. . and part of the pantropical chinaberry family, Meliaceae. Mahogany is used commercially for a wide variety of goods, due to its coloring and durable nature. It is naturally found within the Americas, but has also been imported to plantations across Asia and Oceania. The mahogany trade is believed to have started as early as the 16th century and flourished throughout the 17th and 18th centuries. In some countries, mahogany is classified as an invasive species. Mahogany is wood from any of three tree species: Honduran or big-leaf mahogany ('' Swietenia macrophylla''), West Indian or Cuban mahogany ('' Swietenia mahagoni''), and '' Swietenia humilis''. Honduran mahogany is the most widespread and the only g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Fiber
Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers ( Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon composite, or just carbon, are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications. The binding polymer is often a thermoset resin such as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The properties of the final CFRP product can be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiberglass
Fiberglass (American English) or fibreglass (English in the Commonwealth of Nations, Commonwealth English) is a common type of fibre-reinforced plastic, fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic Matrix (composite), matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than Carbon-fiber-reinforced polymers, carbon fiber, it is stronger than many metals by weight, non-magnetic, non-conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kayak
] A kayak is a small, narrow human-powered watercraft typically propelled by means of a long, double-bladed paddle. The word ''kayak'' originates from the Inuktitut word '' qajaq'' (). In British English, the kayak is also considered to be a kind of canoe. There are countless different types of kayaks due to the craft being easily adaptable for different environments and purposes. The traditional kayak has an enclosed deck and one or more cockpits, each seating one occupant or kayaker, differentiating the craft from an open-deck canoe. The cockpit is sometimes covered by a spray deck that prevents unwanted entry of water from waves or splashes. Even within these confines, kayaks vary vastly in respect to materials, length, and width, with some kayaks such as the sprint kayak designed to be fast and light, and others such as the whitewater kayak designed to be sturdy and maneuverable. Some modern paddlecrafts, which still claim the title "kayak", remove integral parts of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BS 1088
In materials, BS 1088 is the British Standard specification for marine plywood that applies to plywood produced with untreated tropical hardwood veneers that have a set level of resistance to fungal A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as one of the tradit ... attack. The plies are bonded with Weather Boil Proof (WBP) glue. Although this is a British Standard, the finished product does not have to be made in Britain, just manufactured to meet the standard. The standard is associated with Lloyd's Register since it performs testing of products to this standard. It does not follow that it is a structural plywood. WBP Glue Line – BS 1088 plywood must use an adhesive, which has been proven to be highly resistant to weather, micro-organisms, cold and boiling water, steam and dry heat. The pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jodel
Société Avions Jodel is a French aircraft company started in 1946 by Édouard Joly and his son-in-law Jean Délémontez. History Jodel designed a range of light aeroplanes shortly after the World War II, Second World War. Popular myth has it that the two industrialists, with no formal aerodynamics training, set about designing a single-seat aircraft with some spare plywood and a small engine, a Poinsard 25hp 2-cyl. The result was the 1948 Jodel D9, D9 Bébé (Baby) model. In fact, the two had much experience of building and designing aircraft, Délémontez being a trained aeronautical engineer, and Joly having built an aircraft before the war. The French government bought many of the aircraft, with more than 500 D9s being built during the next twenty years. Subsequently, the government expressed interest in a larger aircraft as a trainer (aircraft), trainer and the two-seat Jodel D11, D11 model followed in 1950. Jodel aircraft are all-wood, usually made from Sitka spruce an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avions Robin
Robin Aircraft is a French manufacturer of light aircraft. It succeeds to ''Centre-Est Aéronautique'', ''Avions Pierre Robin'' and Apex Aircraft (''Avions Robin'' and ''Robin Aviation''). History Centre-Est Aéronautique was formed by Pierre Robin and Jean Délémontez, the principal designer of Jodel aircraft, in October 1957. It began manufacturing aircraft at Darois, near Dijon, France. The first aircraft was designed by Robin and Délémontez. It was based on the D10, a four-seater designed by Édouard Joly and Délémontez at Jodel, that was shelved when work on the Jodel D11 became more urgent. In collaboration with Robin it became the 'Jodel Robin'. It later became the DR100 model (Jodel's models all had D followed by a number). Robin and Délémontez continued to upgrade the design between 1957 and 1972. The DR100 range was succeeded by the DR200 range. Production continued in November 1970 under the name Avions Pierre Robin. The Robin DR400 first flew in 197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
