Arecaceae |
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| Many; see list of Arecaceae genera |
Arecaceae (also known as Palmae), the Palm Family, is a family of flowering plants, belonging to the monocot order, Arecales. There are 202 currently known genera with around 2,600 species, most of which are restricted to tropical or subtropical climates. Of all the families of plants, the Arecaceae is the most easily recognizable as distinct by most persons. The type member of this family is the areca palm, the fruit of which is chewed with the betel leaf and often confused with it. The Date Palm, Rattans, and Coconut also belong to this family. Palm oil is an edible vegetable oil produced by the oil palms in the genus Elaeis. Several species are harvested for heart of palm. Palm sap is sometimes fermented to produce palm wine. The Palm Sunday festival uses palms, hence the name.
Palms first appear in the fossil record around 70-80 million years ago, during the late Cretaceous Period.
Economically important genera include:
See list of Arecaceae genera for a complete listing.
Palm trees line Ocean Avenue in Santa Monica, California. Washingtonia filifera Fruit of Phoenix dactyliferaFew palms tolerate severe cold, and the majority of the species are tropical or subtropical. The three most cold-tolerant species are Trachycarpus fortunei, native to eastern Asia, and Rhapidophyllum hystrix and Sabal minor, both native to the southeastern United States. For more details, see hardy palms.
In the United States, different types of palm trees can be seen in tropical and mediterranean climate areas, such as Florida, (southern) California and Hawaii and along the Gulf Coast through southern Georgia, Mississippi, Alabama, and Louisiana to Texas. The southeastern state of South Carolina is nicknamed the Palmetto State because of the number of palms that line the state's Atlantic coast. Some palms can be grown as far north as Maryland, Arkansas, and even up along the Pacific coast to Oregon and Washington. There have even been known species of transplanted palms that have survived as far north as southern New Jersey [1]. The desert areas of Nevada, Arizona, Utah and New Mexico are also home to some native palms.
Southern Europe has two native palms, Chamaerops humilis (widespread, but mainly seen in Portugal, Spain, France, Italy and Malta) and Phoenix theophrastii (Crete; also southern Turkey). Many other palms are widely planted, with the Japanese Trachycarpus wagnerianus being grown successfully as far north as Iceland.
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Many other palms are widely planted, with the Japanese Trachycarpus wagnerianus being grown successfully as far north as Iceland. Some manufacturers, notably AMD, have started using a new, slightly more environmentally friendly alternative to expanded plastic packaging made out of paper, known commercially as "paperfoam." The packaging has very similar mechanical properties to some expanded plastic packaging, but is biodegradable and can also be recycled with ordinary paper. Southern Europe has two native palms, Chamaerops humilis (widespread, but mainly seen in Portugal, Spain, France, Italy and Malta) and Phoenix theophrastii (Crete; also southern Turkey). The type of cotton fibres used for making paper are discarded as unusable waste from the textile industry, and can be manufactured using fewer chemicals and less energy. The desert areas of Nevada, Arizona, Utah and New Mexico are also home to some native palms. Their reasons for doing this are that the cotton based tissue papers are less abrasive, less likely to cause allergic reactions, and far more environmentally friendly than wood papers, as they are made from renewable materials. There have even been known species of transplanted palms that have survived as far north as southern New Jersey [1]. However, at least one company (Cloudy Bay Cotton) has recently tried to introduce cotton based tissue papers to westernised countries as an alternative to wood based ones. Some palms can be grown as far north as Maryland, Arkansas, and even up along the Pacific coast to Oregon and Washington. Paper made in the west since the industrial revolution has been almost exclusively wood based, except for a few specialized papers like those used in banknotes. The southeastern state of South Carolina is nicknamed the Palmetto State because of the number of palms that line the state's Atlantic coast. The majority of modern book publishers now use acid-free paper. In the United States, different types of palm trees can be seen in tropical and mediterranean climate areas, such as Florida, (southern) California and Hawaii and along the Gulf Coast through southern Georgia, Mississippi, Alabama, and Louisiana to Texas. Documents written on more expensive rag paper were more stable. For more details, see hardy palms. Unfortunately, the original wood-based paper was more acidic and more prone to disintegrate over time, through processes known as slow fires. The three most cold-tolerant species are Trachycarpus fortunei, native to eastern Asia, and Rhapidophyllum hystrix and Sabal minor, both native to the southeastern United States. The office worker or the white-collar worker was slowly born of this transformation, which can be considered as a part of the industrial revolution. Few palms tolerate severe cold, and the majority of the species are tropical or subtropical. Cheap wood based paper also meant that keeping personal diaries or writing letters ceased to be reserved to a privileged few. See list of Arecaceae genera for a complete listing. With the gradual introduction of cheap paper, schoolbooks, fiction, non-fiction, and newspapers became slowly available to nearly all the members of an industrial society. Economically important genera include:. Before this era a book or a newspaper was a rare luxury object and illiteracy was the norm. Palms first appear in the fossil record around 70-80 million years ago, during the late Cretaceous Period. Together with the invention of the practical fountain pen and the mass produced pencil of the same period, and in conjunction with the advent of the steam driven rotary printing press, wood based paper caused a major transformation of the 19th century economy and society in industrialized countries. The Palm Sunday festival uses palms, hence the name. Although older machines predated it, the Fourdrinier paper making machine became the basis for most modern papermaking. Palm sap is sometimes fermented to produce palm wine. Paper remained a luxury item through the centuries, until the advent of steam-driven paper making machines in the 19th century, which could make paper with fibres from wood pulp. Several species are harvested for heart of palm. According to this theory, Chinese culture was less developed than the West in ancient times because bamboo, while abundant, was a clumsier writing material than papyrus; Chinese culture advanced during the Han Dynasty and preceding centuries due to the invention of paper; and Europe advanced during the Renaissance due to the introduction of paper and the printing press. Palm oil is an edible vegetable oil produced by the oil palms in the genus Elaeis. Some historians speculate that paper was the key element in global cultural advancement. The Date Palm, Rattans, and Coconut also belong to this family. The oldest known paper document in the West is the Missel of Silos from the 11th century. The type member of this family is the areca palm, the fruit of which is chewed with the betel leaf and often confused with it. They used hemp and linen rags as a source of fiber. Of all the families of plants, the Arecaceae is the most easily recognizable as distinct by most persons. After further commercial trading and the defeat of the Chinese in the Battle of Talas, the invention spread to the Middle East, where it was adopted in India and subsequently in Italy in about the 13th century. There are 202 currently known genera with around 2,600 species, most of which are restricted to tropical or subtropical climates. The technology was first transferred to Korea in 600 and then imported to Japan by a Buddhist priest, Dam Jing (曇徴) from Goguryeo, around 610, where fibres (called bast) from the mulberry tree were used. Arecaceae (also known as Palmae), the Palm Family, is a family of flowering plants, belonging to the monocot order, Arecales. Instruction in the manufacturing process was required, and the Chinese were reluctant to share their secrets. Moore, Jr. (Allen Press, Lawrence, Kansas). It spread slowly outside of China; other East Asian cultures, even after seeing paper, could not figure out how to make it themselves. Genera palmarum: a classification of palms based on the work of Harold E. Other sources trace the invention of this type of papermaking to China in 150 BC. Dransfield (1987). The Chinese court official Cai Lun described the modern method of papermaking in AD 105; he was the first person to describe how to make paper from cotton rags. Uhl, J. Indeed, most of the above materials were rare and costly. W. Silk was sometimes used, but was normally too expensive to consider. N. In China, documents were ordinarily written on bamboo, making them very heavy and awkward to transport. Berlin, Germany. Further north, parchment or vellum, made of processed sheepskin or calfskin, replaced papyrus, as the papyrus plant requires subtropical conditions to grow. Natürliches System des Pflanzenreichs..., 317. Papyrus was produced as early as 3000 BC in Egypt, and in ancient Greece and Rome. Schultz-Schultzenstein (1832). The word paper comes from the ancient Egyptian writing material called papyrus, which was woven from papyrus plants. H. The heat produced by these can easily dry the paper to less than 6% moisture. C. These dryer cans heat to temperatures above 200ºF and are used in long sequences of more than 40 cans. Washingtonia. On the paper machine, the most common is the steam-heated can dryer. Wallichia. In more modern times, various forms of heated drying mechanisms are used. Veitchia. In the earliest days of papermaking this was done by hanging the paper sheets like laundry. Trachycarpus. Drying involves using air and or heat to remove water from the paper sheet. Salacca - Salak. When making paper by hand, a blotter sheet is used. Sabal - Palmettos. On a paper machine this is called a felt (not to be confused with the traditional felt). Roystonea - Royal palm. Once the water is forced from the sheet, another absorbant material must be used to collect this water. Rhapis. Pressing the sheet removes the water by force. Raphia - Raffia palm. The methods of doing so vary between the different processes used to make paper, but the concepts remain the same. Phoenix - Date palm. This is accomplished through pressing and drying. Orbignya. After the paper web is produced, the water must be removed from it in order to create a usable product. Jubaea - Chilean Wine palm and Coquito palm. Standard sheet sizes are prescribed by governing bodies such as the International Organization for Standardization (ISO). Jessenia. When dried, this continuous web may be cut into rectangular sheets by slicing the web vertically and horizontally to the desired size. Euterpe - Cabbage Heart palm, and Açaí palm. Most mass-produced paper is made using the continuous Fourdrinier process to form a reel or web of fibers in a thin sheet. Elaeis - Oil palm. The paper may then be removed from the mould, wet or dry, and go on to further processing. Copernicia - Carnauba wax palm. Pressure may be applied to help remove additional water. Cocos - Coconut. In the mould process, a quantity of pulp is placed into a form, with a wire-mesh base, so that the fibers form a sheet on the mesh and excess water can drain away. Calamus - Rattan palm. This moving web is pressed and dried into a continuous sheet of paper. Borassus - Palmyra palm. A watermark may be impressed into the paper at this stage of the process. Bactris. This dilute slurry is drained through a fine-mesh moving screen to form a fibrous web. Attalea. The pulp mixture is further diluted with water resulting in a very thin slurry. Arenga. For example, Kaolin (or calcium carbonate) is added to produce the glossy papers typically used for magazines. Areca. Once the fibers have been extracted, they may also be bleached, dyed, or have additional ingredients added to alter the appearance of the final product. These fibres have already been treated once, so instead they need a more gentle process to break the fibers apart while preserving their integrity. Recycled fibres do not need to be pulped in the conventional sense. Removing the lignin from wood chips also serves to break them apart into the fibers that compose pulp. Pulp that is broken down chemically is known as "chemical pulp." The main purpose of a chemical pulping process is to break down the chemical structure of lignin and render it soluble in a liquid (most often water) so it may be washed from the remaining fibers. However, because the lignin will cause this paper to yellow, mechanical pulp is most often used for newspapers and other non-permanent goods. Since the lignin is not removed from mechanical pulp, yields are relatively high, approximately 90-98%. Pulp that has been broken down mechanically is often known as "groundwood pulp." The mechanical process to break down wood chips into pulp requires no chemicals. If the lignin is retained in the pulp, the paper will yellow when exposed to air and light. These processes are not needed when breaking down recycled fibers, as the lignin has already been removed from the source material. This is done via a chemical process. When natural materials are used to make paper, it is usually necessary to break down the lignin inside of the plant's cell walls. The source of fiber is often natural (softwood or hardwood trees or other plants) or recycled, such as old corrugated boxes, newsprint, or mixed paper. The material to be used for making paper is first converted into pulp, a concentrated mixture of fibers suspended in liquid. Whether done by hand or with a paper machine, the paper making process has three simple steps:. . Though generally considered a flexible material, the edges of paper sheets can act as very thin, fine-toothed saws, leading to paper cuts. A stack of 500 sheets of paper is called a ream. However, other vegetable fiber materials including cotton, hemp, linen, and rice may be used. The most common source of these fibers is wood pulp from pulpwood trees, (largely softwoods) such as spruce. The fibers used are usually natural and composed of cellulose. Paper was invented in Ancient China by a man named Ts'ai Lun in AD 105.Paper is a thin, flat material produced by the compression of fibers (or fibres). paper machines- paper-engineering. origami. papier-mâché. For construction
toilet paper. For cleaning (see also tissue, Kleenex):
envelope. For packaging:
book. For entertainment:
security. check. bank note. paper money. To represent a value:
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