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Bambooworking
Bambooworking is the activity or skill of making items from bamboo, and includes architecture, carpentry, furniture and cabinetry, carving, joinery, and weaving. Its historical roots in Asia span cultures, civilizations, and millennia, and is found across East, South, and Southeast Asia. Functional uses Writing surface Bamboo was in widespread use in early China as a medium for written documents. The earliest surviving examples of such documents, written in ink on string-bound bundles of bamboo strips (or "slips"), date from the fifth century BC, during the Warring States period. References in earlier texts surviving on other media indicate some precursor of these Warring States period bamboo slips was used as early as the late Shang period (from about 1250 BC). Bamboo or wooden strips were used as the standard writing material during the early Han dynasty, and excavated examples have been found in abundance. Subsequently, paper began to displace bamboo and wooden strips ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bamboo Feb09
Bamboos are a diverse group of mostly evergreen perennial plant, perennial flowering plants making up the subfamily (biology), subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family, in the case of ''Dendrocalamus sinicus'' having individual stalks (Culm (botany), culms) reaching a length of , up to in thickness and a weight of up to . The internodes of bamboos can also be of great length. ''Kinabaluchloa, Kinabaluchloa wrayi'' has internodes up to in length. and ''Arthrostylidium schomburgkii'' has internodes up to in length, exceeded in length only by Cyperus papyrus, papyrus. By contrast, the stalks of the tiny bamboo Raddiella, ''Raddiella vanessiae'' of the savannas of French Guiana measure only in length by about in width. The origin of the word "bamboo" is uncertain, but it most likely comes from the Dutch language, Dutch or Portuguese language, Portuguese language, which originally borrowed it from Malay langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joss Paper
Joss paper, also known as incense papers, are papercrafts or sheets of paper made into burnt offerings common in Chinese ancestral worship (such as the veneration of the deceased family members and relatives on holidays and special occasions). Worship of deities in Chinese folk religion also uses a similar type of joss paper. Joss paper, as well as other papier-mâché items, are also burned or buried in various Asian funerals, "to ensure that the spirit of the deceased has sufficient means in the afterlife". In Taiwan alone, the annual revenue that temples received from burning joss paper was US$400 million (NT$13 billion) as of 2014. Use Spirit money is most often used for venerating those departed but has also been known to be used for other purposes such as a gift from a groom's family to the bride's ancestors. Spirit money has been said to have been given for the purpose of enabling their deceased family members to have all they will need or want in the afterlife. It ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Competition Bureau
The Competition Bureau () is the independent law enforcement agency in charge of regulating competition in Canada, responsible for ensuring that markets operate in a competitive manner. Headed by the Commissioner of Competition, the agency is responsible for the administration and enforcement of the '' Competition Act'', as well as the '' Consumer Packaging and Labelling Act'' (except as it relates to food), '' Textile Labelling Act'', and the '' Precious Metals Marking Act''. The Bureau falls within the scope of Innovation, Science and Economic Development Canada, and its minister. Commissioner of Competition The Competition Bureau is headed by the Commissioner of Competition. The current Commissioner of Competition is Matthew Boswell, who was appointed on March 5, 2019, for a five-year term. Boswell previously served as Senior Deputy Commissioner of Competition before being appointed to his current position. Under the ''Competition Act'', the Commissioner can launch inq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Disulfide
Carbon disulfide (also spelled as carbon disulphide) is an inorganic compound with the chemical formula and structure . It is also considered as the anhydride of thiocarbonic acid. It is a colorless, flammable, neurotoxic liquid that is used as a building block in organic synthesis. Pure carbon disulfide has a pleasant, ether- or chloroform-like odor, but commercial samples are usually yellowish and are typically contaminated with foul-smelling impurities.. History In 1796, the German chemist Wilhelm August Lampadius (1772–1842) first prepared carbon disulfide by heating pyrite with moist charcoal. He called it "liquid sulfur" (''flüssig Schwefel''). The composition of carbon disulfide was finally determined in 1813 by the team of the Swedish chemist Jöns Jacob Berzelius (1779–1848) and the Swiss-British chemist Alexander Marcet (1770–1822). Their analysis was consistent with an empirical formula of CS2. Occurrence, manufacture, properties Small amounts of carbon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rayon
Rayon, also called viscose and commercialised in some countries as sabra silk or cactus silk, is a semi-synthetic fiber made from natural sources of regenerated cellulose fiber, cellulose, such as wood and related agricultural products. It has the same molecular structure as cellulose. Many types and grades of viscose fibers and films exist. Some imitate the feel and texture of natural fibers such as silk, wool, cotton, and linen. The types that resemble silk are often called artificial silk. It can be woven or knit to make textiles for clothing and other purposes. Rayon production involves solubilizing cellulose to allow turning the fibers into required form. Three common solubilization methods are: * The Cuprammonium rayon, cuprammonium process (not in use today), using ammoniacal solutions of copper salts * The viscose process, the most common today, using alkali and carbon disulfide * The Lyocell process, using amine oxide, avoids producing neurotoxic carbon disulfide but is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papermaking
Papermaking is the manufacture of paper and cardboard, which are used widely for printing, writing, and packaging, among many other purposes. Today almost all paper is Pulp and paper industry, made using industrial machinery, while handmade paper survives as a specialized craft and a medium for paper art, artistic expression. In papermaking, a dilute suspension consisting mostly of separate cellulose fibres in water is drained through a sieve-like screen, so that a mat of randomly interwoven fibres is laid down. Water is further removed from this sheet by pressing, sometimes aided by suction or vacuum, or heating. Once dry, a generally flat, uniform and strong sheet of paper is achieved. Before the invention and current widespread adoption of automated machinery, all paper was made by hand, formed or laid one sheet at a time by specialized laborers. Even today those who make paper by hand use tools and technologies quite similar to those existing hundreds of years ago, as origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Softwood
Scots pine, a typical and well-known softwood Softwood is wood from gymnosperm trees such as conifers. The term is opposed to hardwood, which is the wood from angiosperm trees. The main differences between hardwoods and softwoods is that the softwoods completely lack vessels (pores). The main softwood species (pines, spruces, larches, false tsugas) also have resin canals (or ducts) in their structure. Characteristics Softwood is wood from gymnosperm trees such as pines and spruces. Softwoods are not necessarily softer than hardwoods. The hardest hardwoods are much harder than any softwood, but in both groups there is enormous variation with the range of wood hardness of the two groups overlapping. For example, balsa wood, which is a hardwood, is softer than most softwoods, whereas the longleaf pine, Douglas fir, and yew softwoods are much harder than several hardwoods. Several specific natural, macroscopic and microscopic features of wood are used in the identification p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardwoods
Hardwood is wood from angiosperm trees. These are usually found in broad-leaved temperate and tropical forests. In temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen. Hardwood (which comes from angiosperm trees) contrasts with softwood (which is from gymnosperm trees). Characteristics Hardwoods are produced by angiosperm trees that reproduce by flowers, and have broad leaves. Many species are deciduous. Those of temperate regions lose their leaves every autumn as temperatures fall and are dormant in the winter, but those of tropical regions may shed their leaves in response to seasonal or sporadic periods of drought. Hardwood from deciduous species, such as oak, normally shows annual growth rings, but these may be absent in some tropical hardwoods. Hardwoods have a more complex structure than softwoods and are often much slower growing as a result. The dominant feature separating "hardwoods" from softwoods is the presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissolving Pulp
Dissolving pulp, also called dissolving cellulose, is bleached wood pulp or cotton linters that has a high cellulose content (> 90%). It has special properties including a high level of brightness and uniform molecular-weight distribution. This pulp is manufactured for uses that require a high chemical purity, and particularly low hemicellulose content, since the chemically similar hemicellulose can interfere with subsequent processes. Dissolving pulp is so named because it is not made into paper, but dissolved either in a solvent or by derivatization into a homogeneous solution, which makes it completely chemically accessible and removes any remaining fibrous structure. Once dissolved, it can be spun into textile fibers (viscose or Lyocell), or chemically reacted to produce derivatized celluloses, such cellulose triacetate, a plastic-like material formed into fibers or films, or cellulose ethers such as methyl cellulose, used as a thickener. Manufacture Pulpwood Dissolving pulp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bambusa Blumeana
''Bambusa spinosa'', also known as ''B. blumeana'', spiny bamboo or thorny bamboo, although in this respect it may be confused with ''Bambusa bambos'', is a species of clumping bamboo occurring in Tropical Asia. Description Culms (stems) of ''Bambusa blumeana'' are up to long and slightly arched. At the base they are up to thick with walls thick, or may be solid. The stem consists of a number of short sections separated by nodes. The main branches are borne on the upper half of the culms, those on the lower part being slender and armed with thorns. The leaves are alternate, lanceolate, and up to long, and one grows from each node, with the lower part of the leaf sheathing the stem. Distribution and habitat Where ''Bambusa blumeana'' originated is unclear, but it may have been native to Indonesia and Borneo. Its range now includes the Philippines, Thailand, Vietnam, southern China and Japan. It has also been introduced to Madagascar, Guam, and some other Indo-Pacific islands. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrocalamus Asper
''Dendrocalamus asper'', also known as giant bamboo or dragon bamboo (in China), is a giant, tropical, clumping species of bamboo native to Southeast Asia. In addition to its prolific nature across Asia, the plant's overall attractive appearance (and ease of care) has seen this species introduced widely across South America and Africa (namely Kenya, Malawi and Ghana), as well as Mexico and Florida. One advantage of this bamboo, especially for gardens, is its natural growth habit as a sympodial, colony-forming plant. Overall this bamboo maintains its own "personal" growing space, and does not grow laterally (runners), thus posing less risk of being environmentally-invasive. It is important to note, however, that although ''D. asper'' is widely considered to be "non-invasive", that is only a generalized experience of most gardeners. Any species of plant can grow one way in its early stages of life, only to then grow very differently in another, especially if relocated. This could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
