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Medium-density Fiberboard
Medium-density fibreboard (MDF) is an engineered wood product made by breaking down hardwood or softwood residuals into wood fibre, often in a defibrator, combining it with wax and a resin binder, and forming it into panels by applying high temperature and pressure. MDF is generally denser than plywood. It is made up of separated fibre but can be used as a building material similar in application to plywood. It is stronger and denser than particle board. The name derives from the distinction in density, densities of fibreboard. Large-scale production of MDF began in the 1980s, in both North America and Europe. Over time, the term "MDF" has become a generic name for any dry-process fibreboard. Physical properties MDF is typically made up of 82% wood fibre, 9% urea-formaldehyde resin glue, 8% water, and 1% paraffin wax. The density is typically between . The range of density and classification as light-, standard-, or high-density board is a misnomer and confusing. The density of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MDF Sample
MDF may refer to: Computing * Master Database File, a Microsoft SQL Server file type * ''MES Development Framework'', a .NET framework for building manufacturing execution system applications * ''Message Development Framework'', a collection of models, methods and tools used by Health Level 7 v3.0 methodology * Media Descriptor File, a proprietary disc image file format developed for Alcohol 120% * Measurement Data Format, one of the data formats defined by the Association for Standardisation of Automation and Measuring Systems (ASAM) * Multiple Domain Facility; see Logical partition Medicine * Map-dot-fingerprint dystrophy, a genetic disease affecting the cornea * ''Mean Diastolic Filling'' of the heart * Myocardial depressant factor, a low-molecular-weight peptide released from the pancreas into the blood in mammals during various shock states Organizations * Hungarian Democratic Forum (Hungarian: ''Magyar Demokrata Fórum''), a political party * Maraland Democratic Front, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardboard
Hardboard, also called high-density fiberboard (HDF), is a type of fiberboard, which is a ''pressed wood'' or ''engineered wood'' product. It is used in furniture and in the construction industry. Description Hardboard is similar to particle board and medium-density fiberboard, but is density, denser, stronger and harder because it is made out of exploded wood fibers that have been highly compressed. The density of hardboard is higher than , usually about . It differs from particle board and medium-density fiberboard in that the bonding of the wood fibers requires no additional adhesive, the original lignin in the wood fibers sufficing to bond the hardboard together, although resin is often added. Hardboard is produced in either a wet or dry process. The wet process, known as the Mason Method, leaves one smooth side and one textured side as a wire mesh is used to allow moisture to escape. Dry processed hardboard is smooth on both sides. Masonite is produced using the wet p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lignin
Lignin is a class of complex organic polymers that form key structural materials in the support tissues of most plants. Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily. Chemically, lignins are polymers made by cross-linking phenolic precursors. History Lignin was first mentioned in 1813 by the Swiss botanist A. P. de Candolle, who described it as a fibrous, tasteless material, insoluble in water and alcohol but soluble in weak alkaline solutions, and which can be precipitated from solution using acid. He named the substance "lignine", which is derived from the Latin word '' lignum'', meaning wood. It is one of the most abundant organic polymers on Earth, exceeded only by cellulose and chitin. Lignin constitutes 30% of terrestrial non-fossil organic carbon on Earth, and 20 to 35% of the dry mass of wood. Lignin is present in red algae, which suggest that the common ancestor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masonite
Masonite board Back side of a masonite board Isorel, Quartrboard, Masonite Corporation, Masonite, also called Quartboard or pressboard, is a type of engineered wood made of steam-cooked and pressure-molded wood or paper fibers. The fibers form a stiff, dense material in a range of weights. The process was formulated and patented by American inventor William H. Mason. Masonite has been widely used in traditional school and office products such as spiral-bound notebooks and three-ring binders, but its unique physical characteristics lend themselves readily to a variety of end-uses, including (but not limited to) document storage, filing supplies (classification and file folders), report covers, folding cartons, tags, labels, and industrial applications. History In 1898, a product resembling Masonite ( hardboard) was first made in England by hot-pressing waste paper.Akers, 1966, p. x In 1924, Masonite was patented in Laurel, Mississippi, by William H. Mason, who was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodchipper
A tree chipper or woodchipper is a machine used for reducing wood (generally tree limbs or trunks) into smaller woodchips. They are often portable, being mounted on wheels on frames suitable for towing behind a truck or van. Power is generally provided by an internal combustion engine from . There are also high-power chipper models mounted on trucks and powered by a separate engine. These models usually also have a hydraulic winch. Tree chippers are typically made of a hopper with a collar, the chipper mechanism itself, and an optional collection bin for the chips. A tree limb is inserted into the hopper (the collar serving as a partial safety mechanism to keep human body parts away from the chipping blades) and started into the chipping mechanism. The chips exit through a chute and can be directed into a truck-mounted container or onto the ground. Typical output is chips on the order of across in size. The resulting wood chips have various usages such as being spread as a g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Furnace
An industrial furnace is a device used to provide heat for an industrial process, typically operating at temperatures above 400 degrees Celsius. These furnaces generate heat by combusting fuel with air or oxygen, or through Electricity, electrical energy, and are used across various industries for applications such as chemical reactions, cremation, Oil refinery, oil refining, and Glass melting furnace, glasswork. The residual heat is expelled as flue gas. While the term industrial furnace encompasses a wide range of high-temperature equipment, one specific type is the direct fired heater, also known as a direct fired furnace or process furnace. Direct fired heaters are primarily used in refinery and petrochemical applications to efficiently transfer heat to process fluids by means of combustion. Unlike other industrial furnaces used in metallurgical furnace, metallurgy or batch ovens, direct fired heaters are optimized for precise temperature control and high thermal efficiency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomass
Biomass is a term used in several contexts: in the context of ecology it means living organisms, and in the context of bioenergy it means matter from recently living (but now dead) organisms. In the latter context, there are variations in how biomass is defined, e.g., only from plants, from plants and algae, from plants and animals. The vast majority of biomass used for bioenergy does come from plants and fecal matter. Bioenergy is a type of renewable energy that the bioenergy industry claims has the potential to assist with climate change mitigation. Uses in different contexts Ecology * Biomass (ecology), the mass of living biological organisms in a given area or ecosystem at a given time. This can be the biomass of particular species or the biomass of a particular community or habitat. Energy * Biomass (energy), biomass used for energy production or in other words: biological mass used as a renewable energy source (usually produced through agriculture, forestry or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landscaping
Landscaping refers to any activity that modifies the visible features of an area of land, including the following: # Living elements, such as flora or fauna; or what is commonly called gardening, the art and craft of growing plants with a goal of creating a beauty within the landscape. # Natural abiotic elements, such as landforms, terrain shape and elevation, or bodies of water. # Abstract elements, such as the weather and lighting conditions. Landscaping requires a certain understanding of horticulture and artistic design, but is not limited to plants and horticulture. Sculpting land to enhance usability (patio, walkways, ponds, water features) are also examples of landscaping being used. When intended as purely an aesthetic change, the term Ornamental Landscaping is used. Often, designers refer to landscaping as an extension of rooms in your house (each one has a function). Outdoor spaces have a vast amount of flexibility as far as materials and function. It is often said th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian National University
The Australian National University (ANU) is a public university, public research university and member of the Group of Eight (Australian universities), Group of Eight, located in Canberra, the capital of Australia. Its main campus in Acton, Australian Capital Territory, Acton encompasses seven teaching and research colleges, in addition to several national academies and institutes. Established in 1946, ANU is the only university to have been created by the Parliament of Australia. It traces its origins to Canberra University College, which was established in 1929 and was integrated into ANU in 1960. ANU enrols 13,329 undergraduate and 11,021 postgraduate students and employs 4,517 staff. The university's endowment stood at A$1.8 billion as of 2018. ANU counts six List of Nobel laureates, Nobel laureates and 49 Rhodes Scholarship, Rhodes scholars among its List of Australian National University people, faculty and alumni. The university has educated the incumbent Governor-Gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalypt
Eucalypt is any woody plant with Capsule (fruit), capsule fruiting bodies belonging to one of seven closely related genera (of the tribe Eucalypteae) found across Australia: ''Eucalyptus'', ''Corymbia'', ''Angophora'', ''Stockwellia'', ''Allosyncarpia'', ''Eucalyptopsis'' and ''Arillastrum''. In Australia, they are commonly known as gum trees or stringybarks. Taxonomy For an example of changing historical perspectives, in 1991, largely genetic evidence indicated that some prominent ''Eucalyptus'' species were actually more closely related to ''Angophora'' than to other eucalypts; they were accordingly split off into the new genus ''Corymbia''. Although separate, all of these genera and their species are allied and it remains the standard to refer to the members of all seven genera ''Angophora'', ''Corymbia'', ''Eucalyptus'', ''Stockwellia'', ''Allosyncarpia'', ''Eucalyptopsis'' and ''Arillastrum'' as "eucalypts" or as the eucalypt group. The extant genera ''Stockwellia'', ''A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiata Pine
''Pinus radiata'' ( syn. ''Pinus insignis''), the Monterey pine, insignis pine or radiata pine, is a species of pine native to the Central Coast of California and Mexico (on Guadalupe Island and Cedros island). It is an evergreen conifer in the family Pinaceae. ''Pinus radiata'' is a versatile, fast-growing, medium-density softwood, suitable for a wide range of uses and valued for rapid growth (up to two meters (6.5 feet) in one year), as well as desirable lumber and pulp qualities. Its silviculture reflects a century of research, observation and practice. It is often considered a model for growers of other plantation species. Although ''P. radiata'' is extensively cultivated as a plantation timber in many temperate parts of the world, it faces serious threats in its natural range, due to the introduction of a fungal parasite, the pine pitch canker (''Fusarium circinatum''). The pine shoot moth '' Rhyacionia buoliana'' is another serious problem. In cultivation in New Zealand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plantation
Plantations are farms specializing in cash crops, usually mainly planting a single crop, with perhaps ancillary areas for vegetables for eating and so on. Plantations, centered on a plantation house, grow crops including cotton, cannabis, tobacco, coffee, tea, cocoa, sugar cane, opium, sisal, oil seeds, oil palms, fruits, rubber trees and forest trees. Protectionist policies and natural comparative advantage have sometimes contributed to determining where plantations are located. In modern use, the term usually refers only to large-scale estates. Before about 1860, it was the usual term for a farm of any size in the southern parts of British North America, with, as Noah Webster noted, "farm" becoming the usual term from about Maryland northward. The enslavement of people was the norm in Maryland and states southward. The plantations there were forced-labor farms. The term "plantation" was used in most British colonies but very rarely in the United Kingdom itself i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
