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Pontederia crassipes. Pontederia crassipes (formerly "Eichhornia crassipes"), commonly known as common water hyacinth is an aquatic plant native to South America, naturalized throughout the world, and often invasive outside its native range. It is the sole species of the subgenus "Oshunae" within the genus "Pontederia". Anecdotally, it is known as the "terror of Bengal" due to its invasive growth tendencies.## Description.Water hyacinth is a free-floating perennial aquatic plant (or hydrophyte) native to tropical and sub-tropical South America. With broad, thick, glossy, ovate leaves, water hyacinth may rise above the surface of the water as much as 1 (m) in height. The leaves.

Pontederia crassipes. are 10–20 (cm) across on a stem which is floating by means of buoyant bulb-like nodules at its base above the water surface. They have long, spongy and bulbous stalks. The feathery, freely hanging roots are purple-black. An erect stalk supports a single spike of 8–15 conspicuously attractive flowers, mostly lavender to pink in colour with six petals. When not in bloom, water hyacinth may be mistaken for frog's-bit ("Limnobium spongia") or Amazon frogbit ("Limnobium laevigatum").One of the fastest-growing plants known, water hyacinth reproduces primarily by way of runners or stolons, which eventually form daughter plants. Each plant additionally can.

Pontederia crassipes. produce thousands of seeds each year, and these seeds can remain viable for more than 28 years. The common water hyacinth ("Pontederia crassipes") are vigorous growers and mats can double in size in one to two weeks. And in terms of plant count rather than size, they are said to multiply by more than a hundredfold in number, in a matter of 23 days.In their native range, these flowers are pollinated by long-tongued bees and they can reproduce both sexually and clonally. The invasiveness of the hyacinth is related to its ability to clone itself and large patches are likely.

Pontederia crassipes. to all be part of the same genetic form.Water hyacinth has three flower morphs and is termed "tristylous". The flower morphs are named for the length of their pistil: long, medium and short. Tristylous populations are however limited to the native lowland South America range of water hyacinth; in the introduced range, the M-morph prevails, with the L-morph occurring occasionally and the S-morph is absent altogether. This geographical distribution of the floral morphs indicates that founder events have played a prominent role in the species' worldwide spread.## Habitat and ecology.Its habitat ranges from tropical desert to subtropical or warm temperate.

Pontederia crassipes. desert to rainforest zones. The temperature tolerance of the water hyacinth is the following; its minimum growth temperature is 12 (C); its optimum growth temperature is 25 - 30 (C); its maximum growth temperature is 33 - 35 (C), and its pH tolerance is estimated at 5.0–7.5. Leaves are killed by frost and plants do not tolerate water temperatures > 34 (C). Water hyacinths do not grow where the average salinity is greater than 15% that of sea water (around 5 g salt per kg). In brackish water, its leaves show epinasty and chlorosis, and eventually die. Rafts of harvested.

Pontederia crassipes. water hyacinth have been floated to the sea where it is killed."Azotobacter chroococcum", a species of nitrogen-fixing bacteria, is probably concentrated around the bases of the petioles, but the bacteria do not fix nitrogen unless the plant is suffering extreme nitrogen deficiency.Fresh plants contain prickly crystals. This plant is reported to contain hydrogen cyanide, alkaloids, and triterpenoids, and may induce itching. Plants sprayed with 2,4-dichlorophenoxyacetic acid may accumulate lethal doses of nitrates, and other harmful elements in polluted environments.## Invasive species.Water hyacinth grows and reproduces quickly, so it can cover large portions of ponds and lakes. Particularly vulnerable are bodies.

Pontederia crassipes. of water that have already been affected by human activities, such as artificial reservoirs or eutrophied lakes that receive large amounts of nutrients. It outcompetes native aquatic plants, both floating and submerged. In 2011, Wu Fuqin et al. tracked the results of Yunnan Dianchi Lake and also showed that water hyacinth could affect the photosynthesis of phytoplankton, submerged plants and algae by water environment quality and inhibit its growth. The decay process depletes dissolved oxygen in the water, often killing fish.Water hyacinth can absorb a large amount of harmful heavy metals and other substances. After death, it will rot and.

Pontederia crassipes. sink to the bottom of the water, causing secondary pollution to the water body, destroying the natural water quality, and may even affect the quality of residents' drinking water in severe cases. Water where water hyacinth grows heavily is often a breeding place for disease vectors (e.g. mosquitoes and snails) and harmful pathogens, posing a potential threat to the health of local residents. On the other hand, water hyacinth can also provide a food source for goldfish, keep water clean and help to provide oxygen.The invasion of water hyacinth also has socioeconomic consequences. Since water hyacinth is comprised up of.

Pontederia crassipes. 95% water, the evapotranspiration rate is high. As such, small lakes that have been covered with the species can dry out and leave communities without adequate water or food supply. In some areas, dense mats of water hyacinth prevents the use of a waterway, leading to the loss of transportation (both human and cargo) as well as a loss of fishing possibilities. Large sums of money are allocated to the removal of water hyacinth from the water bodies as well as figuring out how to destroy the remains harvested. Harvesting water hyacinth mechanically requires a lot of effort. A million.

Pontederia crassipes. tons of fresh biomass would require 75 trucks with a capacity of 40m^3, per day, for 365 days to get rid of a million tons of water hyacinth. The water hyacinth would then be transferred to a dumping site and allowed to decompose which releases CO2, CH4 and nitrogen oxides which would all negatively impact the air quality and contribute to global warming.Water hyacinth has been widely introduced in North America, Europe, Asia, Australia, Africa, and New Zealand. In many areas, it has become an important and pernicious invasive species. In New Zealand, it is listed on the National Pest.

Pontederia crassipes. Plant Accord, which prevents it from being propagated, distributed, or sold. In large water areas such as Louisiana, the Kerala Backwaters in India, Tonlé Sap in Cambodia, and Lake Victoria, it has become a serious pest. The common water hyacinth has become an invasive plant species on Lake Victoria in Africa after it was introduced into the area in the 1980s.## United States.## Introduction into the U.S..Various accounts are given as to how the water hyacinth was introduced to the United States.The claim that the water hyacinth was introduced to the U.S. in 1884 at the World's Fair in New.

Pontederia crassipes. Orleans, also known as the World Cotton Centennial, has been characterized as the "first authentic account", as well as "local legend".At some time, versions of the "legend" asserted that the plants had been given away as a gift by a Japanese delegation at the fair. This claim is absent in a pertinent article published in a military engineer's trade journal dating to 1940, but appears in a piece penned in 1941 by the director of the wildlife and fisheries division at the Louisiana Department of Conservation, where the author writes, "the Japanese government maintained a Japanese building" at the fair,.

Pontederia crassipes. and the "Japanese staff imported from Venezuela considerable numbers of water hyacinth, which were given away as souvenirs". The claim has been repeated by later writers, with various shifts in the details. Thus NAS fellow Noel D. Vietmeyer (1975) wrote that "Japanese entrepreneurs" introduced the plant into the U.S., and the plants had been "collected from the Orinoco River in Venezuela", and the claim was echoed along the same gist by a pair of NASA researchers (), who asserted that the souvenir plants were carelessly dumped in various waterways. Canadian biologist Spencer C. H. Barrett (2004) meanwhile favored the theory.

Pontederia crassipes. they were first cultivated in garden ponds, after which they multiplied and escaped to the environs. The account gains a different detail as told by children's story-teller Carole Marsh (1992), who says "Japan gave away water hyacinth seeds" during the exposition, and another Southern raconteur, Gaspar J. "Buddy" Stall (1998) assured his readership that the Japanese gave each family a package of those seeds.One paper has also inquired into the role which catalog sales of seeds and plants may have played in the dissemination of invasive plants. It has been found that "P. crassipes" was offered in the 1884 issue.

Pontederia crassipes. of Bordentown, New Jersey-based Edmund D. Sturtevant's "Catalogue of rare water lilies and other choice aquatic plants", and of Germany has offered the plant since 1864 (since the firm was founded). By 1895, it was offered by seed-purveyors in the states of NJ, NY, California, and Florida.The "Harper's Weekly" magazine (1895) printed an anecdotal account stating that a certain man from New Orleans collected and brought home water hyacinths he collected from Colombia, c. 1892, and the plant proliferated in a matter of 2 years.## Infestation and control in the Southeast.As the hyacinths multiply into mats, they eliminate the presence.

Pontederia crassipes. of fish, and choke waterways for boating and shipping. This effect was well taking hold in the state of Louisiana by the turn of the 20th century.The plant invaded Florida in 1890, and an estimated 50 kg/m2 of the plant mass choked Florida's waterways. The clogging of the St. Johns River was posing a serious threat, and in 1897 the government dispatched a task force of the United States Army Corps of Engineers to solve the water hyacinth problem plaguing the Gulf states such as Florida and Louisiana.Thus in the early 20th century, the U.S. War Department (i.e., the Army.

Pontederia crassipes. Corps of Engineers) tested various means of eradicating the plants, including the jet-streaming of steam and hot water, application of various strong acids, and application of petroleum followed by incineration. Spraying with saturated salt solution (but not dilute solutions) effectively killed the plants; unfortunately this was considered prohibitively expensive, and the engineers selected Harvesta brand herbicide, whose active ingredient was arsenic acid, as the optimal cost-effective tool for eradication. This herbicide was used until 1905, when it was substituted with a different, white arsenic based compound. An engineer charged with the spraying did not think the poison to be a.

Pontederia crassipes. matter of concern, stating that the crew of the spraying boat would routinely catch fish from their working areas and consume them. However, spraying had little hope of completely eradicating the water hyacinth, due to the vastness of escaped colonies and the inaccessibility of some of the infested areas, and the engineer suggested that some biological means of control may be needed. In 1910, a bold solution was put forth by the New Foods Society. Their plan was to import and release hippopotamus from Africa into the rivers and bayous of Louisiana. The hippopotamus would then eat the water hyacinth.

Pontederia crassipes. and also produce meat to solve another serious problem at the time, the American meat crisis.Known as the American Hippo bill, H.R. 23621 was introduced by Louisiana Congressman Robert Broussard and debated by the Agricultural Committee of the U.S. House of Representatives. The chief collaborators in the New Foods Society and proponents of Broussard's bill were Major Frederick Russell Burnham, the celebrated American Scout, and Captain Fritz Duquesne, a South African Scout who later became a notorious spy for Germany. Presenting before the Agricultural Committee, Burnham made the point that none of the animals that Americans ate, chickens, pigs, cows,.

Pontederia crassipes. sheep, lambs, were native to the U.S.; all had been imported by European settlers centuries before, so why should Americans hesitate to introduce hippopotamus and other large animals into the American diet? Duquesne, who was born and raised in South Africa, further noted that European settlers on that continent commonly included hippopotamus, ostrich, antelope, and other African wildlife in their diets and suffered no ill effects. The American Hippo bill nearly passed, but fell one vote short.Water hyacinths have also been introduced into waters inhabited by manatees in Florida, for the purpose of bioremediation (cf. §Phytoremediation below) of the waters.

Pontederia crassipes. that have become contaminated and fallen victim to algal blooming. The manatees include the water hyacinth in their diet, but it may not be the food of first choice for them.## Legality of sale and shipment in the United States.In 1956 "E. crassipes" was banned for sale or shipment in the United States, subject to a fine and/or imprisonment. This law was repealed by HR133 [116th Congress (2019-2020)] on 12/27/2020.## Africa.The water hyacinth may have been introduced into Egypt in the late 18th to early 19th century during Muhammad Ali of Egypt's era, but was not recognized as an invasive.

Pontederia crassipes. threat until 1879. The invasion into Egypt is dated between 1879 and 1892 by Brij Gopal. Gopal; Junk; Davis (2000) ", Biodiversity in Wetlands" 2p. 109.</ref>The plant (Afrikaans: "waterhiasint") arguably invaded South Africa in 1910, although earlier dates have been claimed.The plant was introduced by Belgian colonists to Rwanda to beautify their holdings. It then advanced by natural means to Lake Victoria where it was first sighted in 1988. There, without any natural enemies, it has become an ecological plague, suffocating the lake, diminishing the fish reservoir, and hurting the local economies. It impedes access to Kisumu and other harbors.The.

Pontederia crassipes. water hyacinth has also appeared in Ethiopia, where it was first reported in 1965 at the Koka Reservoir and in the Awash River, where the Ethiopian Electric Light and Power Authority has managed to bring it under moderate control at considerable cost of human labor. Other infestations in Ethiopia include many bodies of water in the Gambela Region, the Blue Nile from Lake Tana into Sudan, and Lake Ellen near Alem Tena. By 2018, it has become a serious problem on Lake Tana in Ethiopia.The water hyacinth is also present on the Shire River in the Liwonde National Park in.

Pontederia crassipes. Malawi.## Asia.Water hyacinth was introduced to North America in 1884 and later to Asia, Africa, and Australia. Since there are no natural enemies in the new location, it can multiply quickly and cause disaster.The water hyacinth was introduced to Bengal, India because of its beautiful flowers and shapes of leaves, but turned out to be an invasive weed draining oxygen from the water bodies and resulted in devastation of fish stock. The water hyacinth was referred to as the "(Beautiful) Blue Devil" in Bengal, and "Bengal Terror" elsewhere in India; it was called "German weed" (Bengali: "Germani pana") in Bangladesh.

Pontederia crassipes. out of belief the German Kaiser submarine mission was involved in introducing them at the outbreak of World War I; and called "Japanese trouble" in Sri Lanka, due to the rumor that the British had planted them in order to entice Japanese aircraft to land on the insecure pads.In Bangladesh, projects have begun to utilize water hyacinth for the construction of floating vegetable gardens.Water hyacinth has also invaded the Tonlé Sap lake in Cambodia. An Osmose project in Cambodia is trying to fight it by having local people make baskets from it.The plant entered Japan in 1884 for horticultural appreciation,.

Pontederia crassipes. according to conventional wisdom, but a researcher devoted to the study of the plant has discovered that ukiyo-e artist Utagawa Kunisada (aka Utagawa Toyokuni III, d. 1865) produced a wood-block print featuring the water hyacinth, goldfish, and beautiful women, dated to 1855. The plant is floated on the water surface of filled (glassware) fishbowls, or glazed earthenware waterlily pots (hibachi pots serving as substitute).In the 1930s, water hyacinth was introduced into China as a feed, ornamental plant and sewage control plant, and it was widely planted in the south as an animal feed. Beginning in the 1980s, with the rapid.

Pontederia crassipes. development of China's inland industry, the eutrophication of inland waters has intensified. With the help of its efficient asexual reproduction and environmental adaptation mechanisms, water hyacinth has begun to spread widely in the river basin. The hyacinths blocked the river and hindered the internal water traffic. For example, many waterways in Zhejiang and other provinces were blocked by the rapidly growing water hyacinth. In addition, a large number of water hyacinths floating in the water will block sunlight from entering the water, and its decay consumes a lot of dissolved oxygen in the water, pollutes the water quality, and can.

Pontederia crassipes. kill other aquatic plants. The outbreak of water hyacinth has seriously affected the biodiversity of the local ecosystem and threatened the production, life and health of community residents.In Iraq, water hyacinth which was imported in the 1990s as a decorative plant, caused major problems for water supply systems and fishermen at the Euphrates.## Europe.In 2016, the European Union banned any sales of the water hyacinth in the EU. The species features on the list of Invasive Alien Species of Union Concern. This means that not only the sales but also importation, cultivation, or intentional release into the environment are forbidden.

Pontederia crassipes. in the whole of the European Union.## Oceania.In Papua New Guinea, water hyacinth blocked sunlight to other aquatic organisms, created habitat for malaria-carrying mosquitoes, clogged waterways to the point that boats could not get through and reduced the quality of water for purposes such as cooking, washing and drinking. People have lost income or even died due to being unable to travel to get food or medical care, or due to diseases from contaminated water or mosquitoes.## Control.Control depends on the specific conditions of each affected location such as the extent of water hyacinth infestation, regional climate, and proximity to.

Pontederia crassipes. human and wildlife.## Chemical control.Chemical control is the least used out of the three controls of water hyacinth, because of its long-term effects on the environment and human health. The use of herbicides requires strict approval from governmental protection agencies of skilled technician to handle and spray the affected areas. The use of chemical herbicides is only used in case of severe infiltration of water hyacinth. However, the most successful use of herbicides is when it is used for smaller areas of infestation of water hyacinth. This is because in larger areas, more mats of water hyacinths are likely to.

Pontederia crassipes. survive the herbicides and can fragment to further propagate a large area of water hyacinth mats. In addition, it is more cost-effective and less laborious than mechanical control. Yet, it can lead to environmental effects as it can penetrate into the ground water system and can affect not only the hydrological cycle within an ecosystem but also negatively affect the local water system and human health. It is also notable that the use of herbicides is not strictly selective of water hyacinths; keystone species and vital organisms such as microalgae can perish from the toxins and can disrupt fragile food.

Pontederia crassipes. webs.The chemical regulation of water hyacinths can be done using common herbicides such as 2,4-D, glyphosate, and diquat. The herbicides are sprayed on the water hyacinth leaves and leads to direct changes to the physiology of the plant. The use of the herbicide known as 2,4-D leads to the death of water hyacinth through inhibition of cell growth of new tissue and cellular apoptosis. It can take almost a two-week period before mats of water hyacinth are destroyed with 2, 4-D. Between 75000 and 150000 (acre) of water hyacinth and alligator weed are treated annually in Louisiana.The herbicide known as.

Pontederia crassipes. diquat is a liquid bromide salt that can rapidly penetrate the leaves of the water hyacinth and lead to immediate inactivity of plant cells and cellular processes. For the herbicide glyphosate, it has a lower toxicity than the other herbicides; therefore, it takes longer for the water hyacinth mats to be destroyed (about three weeks). The symptoms include steady wilting of the plants and a yellow discoloration of the plant leaves that eventually leads to plant decay.## Physical control.Physical control is performed by land-based machines such as bucket cranes, draglines, or boom or by water based machinery such as aquatic.

Pontederia crassipes. weed harvesters, dredges, or vegetation shredder. Mechanical removal is seen as the best short-term solution to the proliferation of the plant. A project on Lake Victoria in Africa used various pieces of equipment to chop, collect, and dispose of 1500 (ha) of water hyacinth in a 12-month period. It is, however, costly and requires the use of both land and water vehicles, but it took many years for the lake to become in poor condition and reclamation will be a continual process.It can have an annual cost from $6 million to $20 million and is only considered a short-term solution.

Pontederia crassipes. to a long-term problem. Another disadvantage with mechanical harvesting is that it can lead to further fragmentation of water hyacinths when the plants are broken up by spinning cutters of the plant-harvesting machinery. The fragments of water hyacinth that are left behind in the water can easily reproduce asexually and cause another infestation.However, transportation and disposal of the harvested water hyacinth is a challenge because the vegetation is heavy in weight. The harvested water hyacinth can pose a health risk to humans because of the plant's propensity for absorbing contaminants, and it is considered toxic to humans. Furthermore, the practice.

Pontederia crassipes. of mechanical harvesting is not effective in large-scale infestations of the water hyacinth, because this aquatic invasive species grows much more rapidly than it can be eliminated. Only 1 to 2 (acre) of water hyacinth can be mechanically harvested daily because of the vast amounts of water hyacinths in the environment. Therefore, the process is very time-intensive.## Biological control.As chemical and mechanical removal is often too expensive, polluting, and ineffective, researchers have turned to biological control agents to deal with water hyacinth. The effort began in the 1970s when USDA researchers released into the United States three species of weevil.

Pontederia crassipes. known to feed on water hyacinth, "Neochetina bruchi", "N. eichhorniae", and the water hyacinth borer "Sameodes albiguttalis". The weevil species were introduced into the Gulf Coast states, such as Louisiana, Texas, and Florida, where thousands of acres were infested by water hyacinth. It was found that a decade later in the 1980s that there was a decrease in water hyacinth mats by as much as 33%. However, because the life cycle of the weevils is ninety days, it puts a limitation on the use of biological predation to efficiently suppress water hyacinth growth. These organisms regulate water hyacinth by limiting.

Pontederia crassipes. water hyacinth size, its vegetative propagation, and seed production. They also carry microorganisms that can be pathological to the water hyacinth. These weevils eat stem tissue, which results in a loss of buoyancy for the plant, which will eventually sink. Although meeting with limited success, the weevils have since been released in many other countries. However, the most effective control method remains the control of excessive nutrients and prevention of the spread of this species.In May 2010, the USDA's Agricultural Research Service released "Megamelus scutellaris" as an additional biological control insect for the invasive water hyacinth species. "Megamelus scutellaris" is.

Pontederia crassipes. a small planthopper insect native to Argentina. Researchers have been studying the effects of the biological control agent in extensive host-range studies since 2006 and concluded that the insect is highly host-specific and will not pose a threat to any other plant population other than the targeted water hyacinth. Researchers also hope that this biological control will be more resilient than existing biological controls and the herbicides that are already in place to combat the invasive water hyacinth.Another insect being considered as a biological control agent is the semi-aquatic grasshopper "Cornops aquaticum". This insect is specific to the water hyacinth.

Pontederia crassipes. and its family, and besides feeding on the plant, it introduces a secondary pathogenic infestation. This grasshopper has been introduced into South Africa in controlled trials.The introduction of manatees into waterways was reportedly successful in controlling the plant's growth in Guyana.The Rhodes University Centre for Biological Control is rearing "Megamelus scutellaris" and the water hyacinth weevils "Neochetina eichhorniae" and "Neochetina bruchi" en masse for biological control at dams in South Africa; of importance is the Hartbeespoort Dam.The moth "Niphograpta albiguttalis" (Warren) (Lepidoptera: Pyralidae) has been introduced to North America, Africa and Australia. Larvae of this moth bore in the stems.

Pontederia crassipes. and flower buds of water hyacinth.## Uses.Since water hyacinth is so prolific, harvesting it for various uses also serves as a means of environmental control.## Bioenergy.Because of its extremely high rate of development, "Pontederia crassipes" is an excellent source of biomass. 1 (ha) of standing crop thus produces more than 70000 (m3/ha) of biogas (70% , 30% ). According to Curtis and Duke, 1 (kg) of dry matter can yield 370 (l) of biogas, giving a heating value of 22000 (kJ/m3) compared to pure methane (895 Btu/ft3)Wolverton and McDonald report approximately 0.2 (m3/kg) methane, indicating biomass requirements of 350 (t/ha).

Pontederia crassipes. to attain the 70000 (m3/ha ) yield projected by the National Academy of Sciences (Washington). Ueki and Kobayashi mention more than 200 (t/ha) per year. Reddy and Tucker found an experimental maximum of more than 1/2 (t/ha) per day.Bengali farmers collect and pile up these plants to dry at the onset of the cold season; they then use the dry water hyacinths as fuel. The ashes are used as fertilizer. In India, 1 (t) of dried water hyacinth yields about 50 liters ethanol and 200 kg residual fiber (7,700 Btu). Bacterial fermentation of 1 (t) yields 26,500 ft3 gas (600.

Pontederia crassipes. Btu) with 51.6% methane (), 25.4% hydrogen (), 22.1% carbon dioxide (), and 1.2% oxygen (). Gasification of 1 (t) dry matter by air and steam at high temperatures (800 (C)) gives about 40,000 ft3 (1,100 m3) natural gas (143 Btu/ft3) containing 16.6% , 4.8% , 21.7% (carbon monoxide), 4.1% , and 52.8% (nitrogen). The high moisture content of water hyacinth, adding so much to handling costs, tends to limit commercial ventures. A continuous, hydraulic production system could be designed, which would provide a better utilization of capital investments than in conventional agriculture, which is essentially a batch operation.The labor.

Pontederia crassipes. involved in harvesting water hyacinth can be greatly reduced by locating collection sites and processors on impoundments that take advantage of prevailing winds. Wastewater treatment systems could also favorably be added to this operation. The harvested biomass would then be converted to ethanol, biogas, hydrogen, gaseous nitrogen, and/or fertilizer. The byproduct water can be used to irrigate nearby cropland.## Phytoremediation, waste water treatment.Water hyacinth removes arsenic from arsenic-contaminated drinking water. It may be a useful tool in removing arsenic from tube well water in Bangladesh.Water hyacinth is also observed to enhance nitrification in wastewater treatment cells of living technology. Their.

Pontederia crassipes. root zones are superb micro-sites for bacterial communities.Water hyacinth is a common fodder plant in the third world especially Africa though excessive use can be toxic. It is high in protein (nitrogen) and trace minerals and the goat feces are a good source of fertilizer as well.Water hyacinth is reported for its efficiency to remove about 60–80% nitrogen and about 69% of potassium from water. The roots of water hyacinth were found to remove particulate matter and nitrogen in a natural shallow eutrophicated wetland.The plant is extremely tolerant of, and has a high capacity for, the uptake of heavy metals,.

Pontederia crassipes. including cadmium, chromium, cobalt, nickel, lead, and mercury, which could make it suitable for the biocleaning of industrial wastewater.The roots of "Pontederia crassipes" naturally absorb some organic compounds believed to be carcinogenic, in concentrations 10,000 times that in the surrounding water. Water hyacinths can be cultivated for waste water treatment (especially dairy waste water).In addition to heavy metals, "Pontederia crassipes" can also remove other toxins, such as cyanide, which is environmentally beneficial in areas that have endured gold-mining operations.Water hyacinth can take in and degrade ethion, a phosphorus pesticide.## Agriculture.In places where water hyacinth is invasive, overabundant, and in need.

Pontederia crassipes. of clearing away, these traits make it free for the harvesting, which makes it very useful as a source of organic matter for composting in organic farming. It is used internationally for fertilizer and as animal feed and silage for cattle, sheep, geese, pigs, and other livestock.In Bengal, India the "kachuri-pana" has been used primarily for fertilizer, compost or mulch, and secondarily as fodder for livestock and fish. In Bangladesh, farmers in the southwestern region cultivate vegetables on "floating gardens" usually with a bamboo-built frame base, with dried mass of water hyacinth covered in soil as bedding. As a large.

Pontederia crassipes. portion of cultivable land goes under water for months during monsoon in this low-lying region, farmers have grown this method for many decades now. The method of this agriculture is known by many names including "dhap chash" and "vasoman chash".In Kenya, East Africa, it has been used experimentally as organic fertilizer, although there is controversy stemming from the high alkaline pH value of the fertilizer.## Other uses.In various places in the world, the plant is used for making furniture, handbags, baskets, rope, and household goods/interior products (lampshades, picture frames) by businesses launched by NGOs and entrepreneurs.## Woven products.American-Nigerian Achenyo Idachaba.

Pontederia crassipes. has won an award for showing how this plant can be exploited for profit as woven procuts in Nigeria.## Paper.Though a study found water hyacinths of very limited use for paper production, they are nonetheless being used for paper production on a small scale. Goswami pointed out in his article that water hyacinth has the potential to make tough and strong paper. He found that adding water hyacinth pulp to the raw material of bamboo pulp for anti-grease paper can increase the physical strength of paper.## Edibility.The plant is used as a carotene-rich table vegetable in Taiwan. Javanese sometimes cook.

Pontederia crassipes. and eat the green parts and inflorescence. Vietnamese also cook the plant and sometimes add its young leaves and flower to their salads.## Medicinal use.In Kedah (Malaysia), the flowers are used for medicating the skin of horses. The species is a "tonic".## Potential as bioherbicidal agent.Water hyacinth leaf extract has been shown to exhibit phytotoxicity against another invasive weed "Mimosa pigra". The extract inhibited the germination of "Mimosa pigra" seeds in addition to suppressing the root growth of the seedlings. Biochemical data suggested that the inhibitory effects may be mediated by enhanced hydrogen peroxide production, inhibition of soluble peroxidase activity,.

Pontederia crassipes. and stimulation of cell wall-bound peroxidase activity in the root tissues of "Mimosa pigra". (Complete List of References) "Eichhornia crassipes"Species Profile – Water Hyacinth ("Eichhornia crassipes"), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Water Hyacinth.Eichhornia crassipes Israel Wildflowers and native plantsPractical uses of Water HyacinthIUCN Leaflet on "E. crassipes" in the context of Lake Tanganyika"Water hyacinth", AquaPlant Profile.


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Power inverter. A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC.The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.A power inverter can be entirely electronic or may be a combination of mechanical effects (such as.

Power inverter. a rotary apparatus) and electronic circuitry.Static inverters do not use moving parts in the conversion process.Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and voltages, are called oscillators. Circuits that perform the opposite function, converting AC to DC, are called rectifiers.## Input and output.## Input voltage.A typical power inverter device or circuit requires a stable DC power source capable of supplying enough current for the intended power demands of the system. The input voltage depends on the.

Power inverter. are two basic designs for producing household plug-in voltage from a lower-voltage DC source, the first of which uses a switching boost converter to produce a higher-voltage DC and then converts to AC. The second method converts DC to AC at battery level and uses a line-frequency transformer to create the output voltage.## Square wave.This is one of the simplest waveforms an inverter design can produce and is best suited to low-sensitivity applications such as lighting and heating. Square wave output can produce "humming" when connected to audio equipment and is generally unsuitable for sensitive electronics.## Sine wave.A power inverter.

Power inverter. device that produces a multiple step sinusoidal AC waveform is referred to as a "sine wave inverter". To more clearly distinguish the inverters with outputs of much less distortion than the "modified sine wave" (three-step) inverter designs, the manufacturers often use the phrase "pure sine wave inverter". Almost all consumer grade inverters that are sold as a "pure sine wave inverter" do not produce a smooth sine wave output at all, just a less choppy output than the square wave (two-step) and modified sine wave (three-step) inverters. However, this is not critical for most electronics as they deal with the.

Power inverter. output quite well.Where power inverter devices substitute for standard line power, a sine wave output is desirable because many electrical products are engineered to work best with a sine wave AC power source. The standard electric utility provides a sine wave, typically with minor imperfections but sometimes with significant distortion.Sine wave inverters with more than three steps in the wave output are more complex and have significantly higher cost than a modified sine wave, with only three steps, or square wave (one step) types of the same power handling. Switch-mode power supply (SMPS) devices, such as personal computers or DVD.

Power inverter. players, function on modified sine wave power. AC motors directly operated on non-sinusoidal power may produce extra heat, may have different speed-torque characteristics, or may produce more audible noise than when running on sinusoidal power.## Modified sine wave.The modified sine wave is the sum of two square waves, one of which is delayed one-quarter of the period with respect to the other. The result is a waveform which has voltage steps of zero, peak positive, zero, peak negative and again zero. This voltage value sequence is repeated continuously. The resultant voltage waveform better approximates the shape of a sinusoidal voltage.

Power inverter. entirely without problems, but if the item has a mains transformer, this can overheat depending on how marginally it is rated.However, the load may operate less efficiently owing to the harmonics associated with a modified sine wave and produce a humming noise during operation. This also affects the efficiency of the system as a whole, since the manufacturer's nominal conversion efficiency does not account for harmonics. Therefore, pure sine wave inverters may provide significantly higher efficiency than modified sine wave inverters.Most AC motors will run on MSW inverters with an efficiency reduction of about 20% owing to the harmonic content.

Power inverter. DC supply, in the manner of the MSN designs, but the switching takes place at a far faster rate, typically many KHz, so that the varying width of the pulses can be smoothed to create the sine wave. If a microprocessor is used to generate the switching timing, the harmonic content and efficiency can be closely controlled.## Output frequency.The AC output frequency of a power inverter device is usually the same as standard power line frequency, 50 or 60 hertz. The exception is in designs for motor driving, where a variable frequency results in a variable speed control.Also, if the.

Power inverter. output of the device or circuit is to be further conditioned (for example stepped up) then the frequency may be much higher for good transformer efficiency.## Output voltage.The AC output voltage of a power inverter is often regulated to be the same as the grid line voltage, typically 120 or 240 VAC at the distribution level, even when there are changes in the load that the inverter is driving. This allows the inverter to power numerous devices designed for standard line power.Some inverters also allow selectable or continuously variable output voltages.## Output power.A power inverter will often have an overall.

Power inverter. battery from the others.## Applications.## DC power source usage.An inverter converts the DC electricity from sources such as batteries or fuel cells to AC electricity. The electricity can be at any required voltage; in particular it can operate AC equipment designed for mains operation, or rectified to produce DC at any desired voltage.## Uninterruptible power supplies.An uninterruptible power supply (UPS) uses batteries and an inverter to supply AC power when mains power is not available. When mains power is restored, a rectifier supplies DC power to recharge the batteries.## Electric motor speed control.Inverter circuits designed to produce a variable output.

Power inverter. voltage range are often used within motor speed controllers.The DC power for the inverter section can be derived from a normal AC wall outlet or some other source. Control and feedback circuitry is used to adjust the final output of the inverter section which will ultimately determine the speed of the motor operating under its mechanical load. Motor speed control needs are numerous and include things like: industrial motor driven equipment, electric vehicles, rail transport systems, and power tools.Switching states are developed for positive, negative and zero voltages as per the patterns given in the switching Table 1. The generated.

Power inverter. gate pulses are given to each switch in accordance with the developed pattern and thus the output is obtained.## In refrigeration compressors.An inverter can be used to control the speed of the compressor motor to drive variable refrigerant flow in a refrigeration or air conditioning system to regulate system performance. Such installations are known as inverter compressors. Traditional methods of refrigeration regulation use single-speed compressors switched on and off periodically; inverter-equipped systems have a variable-frequency drive that control the speed of the motor and thus the compressor and cooling output. The variable-frequency AC from the inverter drives a brushless or.

Power inverter. induction motor, the speed of which is proportional to the frequency of the AC it is fed, so the compressor can be run at variable speeds—eliminating compressor stop-start cycles increases efficiency. A microcontroller typically monitors the temperature in the space to be cooled, and adjusts the speed of the compressor to maintain the desired temperature. The additional electronics and system hardware add cost to the equipment, but can result in substantial savings in operating costs. The first inverter air conditioners were released by Toshiba in 1981, in Japan.## Power grid.Grid-tied inverters are designed to feed into the electric power distribution.

Power inverter. hundred megawatts, are used to deliver power from high voltage direct current transmission systems to alternating current distribution systems.## Solar.A solar inverter is a balance of system (BOS) component of a photovoltaic system and can be used for both grid-connected and off-grid systems. Solar inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.Solar micro-inverters differ from conventional inverters, as an individual micro-inverter is attached to each solar panel. This can improve the overall efficiency of the system. The output from several micro-inverters is then combined and often fed to the electrical.

Power inverter. grid.In other applications, a conventional inverter can be combined with a battery bank maintained by a solar charge controller. This combination of components is often referred to as a solar generator.Solar inverters are also used in spacecraft photovoltaic system.## Induction heating.Inverters convert low frequency main AC power to higher frequency for use in induction heating. To do this, AC power is first rectified to provide DC power. The inverter then changes the DC power to high frequency AC power. Due to the reduction in the number of DC sources employed, the structure becomes more reliable and the output voltage has.

Power inverter. higher resolution due to an increase in the number of steps so that the reference sinusoidal voltage can be better achieved. This configuration has recently become very popular in AC power supply and adjustable speed drive applications. This new inverter can avoid extra clamping diodes or voltage balancing capacitors.There are three kinds of level shifted modulation techniques, namely: Phase Opposition Disposition (POD) Alternative Phase Opposition Disposition (APOD) Phase Disposition (PD)## HVDC power transmission.With HVDC power transmission, AC power is rectified and high voltage DC power is transmitted to another location. At the receiving location, an inverter in a static inverter.

Power inverter. plant converts the power back to AC. The inverter must be synchronized with grid frequency and phase and minimize harmonic generation.## Electroshock weapons.Electroshock weapons and tasers have a DC/AC inverter to generate several tens of thousands of V AC out of a small 9 V DC battery. First the 9 V DC is converted to 400–2000 V AC with a compact high frequency transformer, which is then rectified and temporarily stored in a high voltage capacitor until a pre-set threshold voltage is reached. When the threshold (set by way of an airgap or TRIAC) is reached, the capacitor dumps its.

Power inverter. entire load into a pulse transformer which then steps it up to its final output voltage of 20–60 kV. A variant of the principle is also used in electronic flash and bug zappers, though they rely on a capacitor-based voltage multiplier to achieve their high voltage.## Miscellaneous.Typical applications for power inverters include: Portable consumer devices that allow the user to connect a battery, or set of batteries, to the device to produce AC power to run various electrical items such as lights, televisions, kitchen appliances, and power tools. Use in power generation systems such as electric utility companies or solar.

Power inverter. generating systems to convert DC power to AC power. Use within any larger electronic system where an engineering need exists for deriving an AC source from a DC source. Frequency conversion - if a user in (say) a 50 Hz country needs a 60 Hz supply to power equipment that is frequency-specific, such as a small motor or some electronics, it is possible to convert the frequency by running an inverter with a 60 Hz output from a DC source such as a 12V power supply running from the 50 Hz mains.## Circuit description.## Basic design.In one simple inverter circuit,.

Power inverter. DC power is connected to a transformer through the center tap of the primary winding. A relay switch is rapidly switched back and forth to allow current to flow back to the DC source following two alternate paths through one end of the primary winding and then the other. The alternation of the direction of current in the primary winding of the transformer produces alternating current (AC) in the secondary circuit.The electromechanical version of the switching device includes two stationary contacts and a spring supported moving contact. The spring holds the movable contact against one of the stationary contacts and.

Power inverter. provide large power handling capability in a semiconductor device, and can readily be controlled over a variable firing range.The switch in the simple inverter described above, when not coupled to an output transformer, produces a square voltage waveform due to its simple off and on nature as opposed to the sinusoidal waveform that is the usual waveform of an AC power supply. Using Fourier analysis, periodic waveforms are represented as the sum of an infinite series of sine waves. The sine wave that has the same frequency as the original waveform is called the fundamental component. The other sine waves,.

Power inverter. car that is moving can turn into a source of energy and can, with the right inverter topology (full H-bridge) charge the car battery when decelerating or braking. In a similar manner, the right topology (full H-bridge) can invert the roles of "source" and "load", that is, if for example the voltage is higher on the AC "load" side (by adding a solar inverter, similar to a gen-set, but solid state), energy can flow back into the DC "source" or battery.Based on the basic H-bridge topology, there are two different fundamental control strategies called basic frequency-variable bridge converter and PWM.

Power inverter. control. Here, in the left image of H-bridge circuit, the top left switch is named as "S1", and others are named as "S2, S3, S4" in counterclockwise order.For the basic frequency-variable bridge converter, the switches can be operated at the same frequency as the AC in the electric grid. However, it is the rate at which the switches open and close that determines the AC frequency. When S1 and S4 are on and the other two are off, the load is provided with positive voltage and vice versa. We could control the on-off states of the switches to adjust the.

Power inverter. AC magnitude and phase. We could also control the switches to eliminate certain harmonics. This includes controlling the switches to create notches, or 0-state regions, in the output waveform or adding the outputs of two or more converters in parallel that are phase shifted in respect to one another.Another method that can be used is PWM. Unlike the basic frequency-variable bridge converter, in the PWM controlling strategy, only two switches S3, S4 can operate at the frequency of the AC side or at any low frequency. The other two would switch much faster (typically 100 KHz) to create square voltages.

Power inverter. level of distortion caused by harmonics. The waveform quality of AC produced directly by H-bridge mentioned above would be not as good as we want.The issue of waveform quality can be addressed in many ways. Capacitors and inductors can be used to filter the waveform. If the design includes a transformer, filtering can be applied to the primary or the secondary side of the transformer or to both sides. Low-pass filters are applied to allow the fundamental component of the waveform to pass to the output while limiting the passage of the harmonic components. If the inverter is designed to.

Power inverter. provide power at a fixed frequency, a resonant filter can be used. For an adjustable frequency inverter, the filter must be tuned to a frequency that is above the maximum fundamental frequency.Since most loads contain inductance, feedback rectifiers or antiparallel diodes are often connected across each semiconductor switch to provide a path for the peak inductive load current when the switch is turned off. The antiparallel diodes are somewhat similar to the "freewheeling diodes" used in AC/DC converter circuits.Fourier analysis reveals that a waveform, like a square wave, that is anti-symmetrical about the 180 degree point contains only odd harmonics,.

Power inverter. simplifies the electronics, but the inductors and capacitors tend to be large and heavy. Its high efficiency makes this approach popular in large uninterruptible power supplies in data centers that run the inverter continuously in an "online" mode to avoid any switchover transient when power is lost.A closely related approach uses a ferroresonant transformer, also known as a constant voltage transformer, to remove harmonics and to store enough energy to sustain the load for a few AC cycles. This property makes them useful in standby power supplies to eliminate the switchover transient that otherwise occurs during a power failure while.

Power inverter. size and volume. In 2014, Google together with IEEE started an open competition named Little Box Challenge, with a prize money of $1,000,000, to build a (much) smaller power inverter.## History.## Early inverters.From the late nineteenth century through the middle of the twentieth century, DC-to-AC power conversion was accomplished using rotary converters or motor-generator sets (M-G sets). In the early twentieth century, vacuum tubes and gas-filled tubes began to be used as switches in inverter circuits. The most widely used type of tube was the thyratron.The origins of electromechanical inverters explain the source of the term "inverter". Early AC-to-DC converters.

Power inverter. used an induction or synchronous AC motor direct-connected to a generator (dynamo) so that the generator's commutator reversed its connections at exactly the right moments to produce DC. A later development is the synchronous converter, in which the motor and generator windings are combined into one armature, with slip rings at one end and a commutator at the other and only one field frame. The result with either is AC-in, DC-out. With an M-G set, the DC can be considered to be separately generated from the AC; with a synchronous converter, in a certain sense it can be considered to.

Power inverter. be "mechanically rectified AC". Given the right auxiliary and control equipment, an M-G set or rotary converter can be "run backwards", converting DC to AC. Hence an inverter is an inverted converter.## Controlled rectifier inverters.Since early transistors were not available with sufficient voltage and current ratings for most inverter applications, it was the 1957 introduction of the thyristor or silicon-controlled rectifier (SCR) that initiated the transition to solid state inverter circuits.The "commutation" requirements of SCRs are a key consideration in SCR circuit designs. SCRs do not turn off or "commutate" automatically when the gate control signal is shut off. They.

Power inverter. only turn off when the forward current is reduced to below the minimum holding current, which varies with each kind of SCR, through some external process. For SCRs connected to an AC power source, commutation occurs naturally every time the polarity of the source voltage reverses. SCRs connected to a DC power source usually require a means of forced commutation that forces the current to zero when commutation is required. The least complicated SCR circuits employ natural commutation rather than forced commutation. With the addition of forced commutation circuits, SCRs have been used in the types of inverter circuits described.

Power inverter. above.In applications where inverters transfer power from a DC power source to an AC power source, it is possible to use AC-to-DC controlled rectifier circuits operating in the inversion mode. In the inversion mode, a controlled rectifier circuit operates as a line commutated inverter. This type of operation can be used in HVDC power transmission systems and in regenerative braking operation of motor control systems.Another type of SCR inverter circuit is the current source input (CSI) inverter. A CSI inverter is the dual of a six-step voltage source inverter. With a current source inverter, the DC power supply is configured.

Power inverter. as a current source rather than a voltage source. The inverter SCRs are switched in a six-step sequence to direct the current to a three-phase AC load as a stepped current waveform. CSI inverter commutation methods include load commutation and parallel capacitor commutation. With both methods, the input current regulation assists the commutation. With load commutation, the load is a synchronous motor operated at a leading power factor.As they have become available in higher voltage and current ratings, semiconductors such as transistors or IGBTs that can be turned off by means of control signals have become the preferred switching components.

Power inverter. for use in inverter circuits.## Rectifier and inverter pulse numbers.Rectifier circuits are often classified by the number of current pulses that flow to the DC side of the rectifier per cycle of AC input voltage. A single-phase half-wave rectifier is a one-pulse circuit and a single-phase full-wave rectifier is a two-pulse circuit. A three-phase half-wave rectifier is a three-pulse circuit and a three-phase full-wave rectifier is a six-pulse circuit.With three-phase rectifiers, two or more rectifiers are sometimes connected in series or parallel to obtain higher voltage or current ratings. The rectifier inputs are supplied from special transformers that provide phase.

Power inverter. shifted outputs. This has the effect of phase multiplication. Six phases are obtained from two transformers, twelve phases from three transformers and so on. The associated rectifier circuits are 12-pulse rectifiers, 18-pulse rectifiers and so on...When controlled rectifier circuits are operated in the inversion mode, they would be classified by pulse number also. Rectifier circuits that have a higher pulse number have reduced harmonic content in the AC input current and reduced ripple in the DC output voltage. In the inversion mode, circuits that have a higher pulse number have lower harmonic content in the AC output voltage waveform.## Other.


Question: On what date did this building officially open?

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Pro Football Hall of Fame. Village, an estimated $900 million expansion project adjacent to the Pro Football Hall of Fame, has completed Phase I of construction; preparations for beginning Phase II are currently underway.Dick McCann (April 4, 1962 – November 1967)Dick Gallagher (April 1968 – December 31, 1975)Pete Elliott (February 1979 – October 31, 1996)John Bankert (November 1, 1996 – December 31, 2005)Steve Perry (April 24, 2006 – January 2014)David Baker (January 6, 2014 – October 16, 2021)Jim Porter (2021 – present)## Inductees.Through 2021, all players in the Hall, except Buffalo Bills guard Billy Shaw, played at least some part of their professional career in.

Pro Football Hall of Fame. 2002, the ceremony was moved to Fawcett Stadium (now Tom Benson Hall of Fame Stadium), where it was held from 1963 to 1965. Since 2007, the enshrinement ceremony has been held on the Saturday night, since 2017 two days after the Hall of Fame Game. In 2022, the ceremony was moved to noon ET.## Hall of Fame Game.The Hall of Fame Game, the annual NFL preseason opener, is played in Tom Benson Hall of Fame Stadium at Hall of Fame Village in Canton, Ohio. In 2017, the Hall of Fame Game was held for the first time on Thursday night.


Question: Which city or region does this park locate in?

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Mehrauli Archaeological Park. Mehrauli Archaeological Park is an archaeological area spread over 200 acre in Mehrauli, Delhi, adjacent to Qutub Minar World Heritage Site and the Qutb complex. It consists of over 100 historically significant monuments. It is the only area in Delhi known for 1,000 years of continuous occupation, and includes the ruins of Lal Kot built by Tomar Rajputs in 1060 CE, making it the oldest extant fort of Delhi, and architectural relics of subsequent period, rule of Khalji dynasty, Tughlaq dynasty, Lodhi dynasty of Delhi Sultanate, Mughal Empire, and the British Raj.## Overview.The region contains sites like Tomb of Balban,.

Mehrauli Archaeological Park. the area as an archaeological park and conservation of important structures started in 1997, in collaboration between Delhi Tourism and Transportation Development Corporation (DTTDC), the State Department of Archaeology, the Delhi Development Authority (DDA) and the Indian National Trust for Art and Cultural Heritage (INTACH), which first started systematic documentation of structures in the area and also started conducting heritage walks since 2000.Over the years, INTACH has restored some 40 monuments in the Park and added signages, heritage trails, and sandstone trail-markers. Qutb complex History of Delhi Baolis of Mehrauli List of Monuments of National Importance in Delhi Mehrauli Archaeological.

Mehrauli Archaeological Park. Park Conservation INTACH Heritage Walks: Mehrauli Archaeological Park at INTACH Monuments of Delhi Mehrauli Archaeological Park. World History Encyclopedia. Retrieved from https://www.worldhistory.org/article/1736/mehrauli-archaeological-park/.


Question: What is the conservation status of this animal? (The status is assigned by the international union for conservation of nature. Choose one among Endangered,Least Concern,Critically Endangered,extinct species,extinct in the wild,Vulnerable,Near Threatened,Data Deficient).

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Leatherback sea turtle. initiatives."D. coriacea" is listed on CITES Appendix I, which makes export/import of this species (including parts) illegal. It has been listed as an EDGE species by the Zoological Society of London.The species is listed in the IUCN Red List of Threatened Species as VU (Vulnerable), and additionally with the following infraspecific taxa assessments: East Pacific Ocean subpopulation: CR (Critically Endangered) Northeast Indian Ocean subpopulation: DD (Data Deficient) Northwest Atlantic Ocean subpopulation: EN (Endangered) Southeast Atlantic Ocean subpopulation: DD (Data Deficient) Southwest Atlantic Ocean subpopulation CR (Critically Endangered) Southwest Indian Ocean subpopulation CR (Critically Endangered) West Pacific Ocean subpopulation CR (Critically.


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Coprinellus disseminatus. Coprinellus disseminatus (formerly Coprinus disseminatus; commonly known as "fairy inkcap". or "trooping crumble cap") is a species of agaric fungus in the family Psathyrellaceae. Unlike most other coprinoid mushrooms, "C. disseminatus" does not dissolve into black ink ("deliquesce") in maturity. The species was given its current name in 1939 by Jakob Emanuel Lange."Coprinellus disseminatus" has about 143 sexes (mating types). The species is nonpoisonous. Mushroom Expert.


Question: Which significant event was held in this place?

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Blenheim Palace. 1720s. It is unique in its combined use as a family home, mausoleum and national monument. The palace is notable as the birthplace and ancestral home of Sir Winston Churchill.Following the palace's completion, it became the home of the Churchill (later Spencer-Churchill) family for the next 300 years, and various members of the family have wrought changes to the interiors, park and gardens. At the end of the 19th century, the palace was saved from ruin by funds gained from the 9th Duke of Marlborough's marriage to American railroad heiress Consuelo Vanderbilt.## Churchills.John Churchill was born in Devon. Although his.

Blenheim Palace. left (east) side of the plan on either side of the bow room "(marked "O")" can be seen a smaller but nearly identical layout of rooms, which were the suites of the Duke and Duchess themselves. Thus, the bow room corresponds exactly to the saloon in terms of its importance to the two smaller suites.Blenheim Palace was the birthplace of the 1st Duke's famous descendant, Winston Churchill, whose life and times are commemorated by a permanent exhibition in the suite of rooms in which he was born "(marked "K" on the plan)". Blenheim Palace was designed with all its principal.


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Shell Centre. The Shell Centre, in London, is the global headquarters of oil major Shell plc. It is located on Belvedere Road in the London Borough of Lambeth. It is a prominent feature on the South Bank of the River Thames near County Hall, and now forms the backdrop to the London Eye.The original Shell Centre comprised the tower building and three now demolished adjoining nine storey wings (collectively formerly known as the "Upstream Building"). The original development also included a separate building known as the "Downstream Building", which was separated from the Upstream Building by the railway viaduct between Charing Cross.


Question: What is the source that produces this material?

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Tortoiseshell. Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is a critically endangered species according to the IUCN Red List largely because of its exploitation for this trade. The large size, fine color, and unusual form of the hawksbill's scutes make it especially suitable. The distinctive patterning is referred to in names such as the tortoiseshell cat, several breeds of guinea pig, and the common names of several species of the butterfly genera "Nymphalis" and "Aglais", and some other uses.## Uses.Tortoiseshell was widely used.


Question: What is the parent organization of this aircraft?

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De Havilland. The de Havilland Aircraft Company Limited () was a British aviation manufacturer established in late 1920 by Geoffrey de Havilland at Stag Lane Aerodrome Edgware on the outskirts of north London. Operations were later moved to Hatfield in Hertfordshire.Known for its innovation, de Havilland was responsible for a number of important aircraft, including the Moth biplane which revolutionised aviation in the 1920s; the 1930s Fox Moth, a commercial light passenger aircraft; the wooden World War II Mosquito multirole aircraft; and the pioneering passenger jet airliner Comet.The de Havilland company became a member of the Hawker Siddeley group in 1960, but.

De Havilland. lost its separate identity in 1963. Later, Hawker Siddeley merged into what is eventually known today as BAE Systems, the British aerospace and defence business. The de Havilland name lives on in De Havilland Canada, which owns the rights to the name and the aircraft produced by de Havilland's former Canadian subsidiary, including the Dash 8 regional airliner previously produced by Bombardier Aerospace.## History.## Origins.In January 1920 Geoffrey de Havilland was working for Airco as technical director and chief designer. BSA bought Airco on 20 January 1920 from George Holt Thomas on the say-so of one BSA director, Percy Martin,.

De Havilland. stronger. As a result, the Comet was extensively redesigned, with oval windows, structural reinforcements and other changes. Rival manufacturers meanwhile heeded the lessons learned from the Comet while developing their own aircraft. The Comet 4 enabled the de Havilland airliner to return to the skies in 1958. By then the United States had its Boeing 707 jet and the Douglas DC-8, both of which were faster and more economical to operate. Orders for the Comet dried up.Hawker Siddeley bought de Havilland in 1960 but kept it as a separate company until 1963. In that year it became the de Havilland.

De Havilland. Division of Hawker Siddeley Aviation and all types in production or development changed their designations from "DH" to "HS". De Havilland's final designs became the Hawker Siddeley Trident (originally the DH.121) and the innovative Hawker Siddley HS.125, originally the DH.125.The DH.121 design was modified to be smaller to fit the needs of one airline—British European Airways. Other airlines found it unattractive and turned to a rival tri-jet, the Boeing 727 which was much the same size as the initial DH.121 design. De Havilland, as Hawker Siddley, built only 117 Tridents, while Boeing went on to sell over 1,800 727s.De Havilland.

De Havilland. was established in March 1939, and work commenced on New Zealand's first aircraft factory at Rongotai. After World War II, the company undertook maintenance and refurbishment work until taken over by Hawker Siddeley International NZ Ltd in 1964. The site of the factory is now part of Wellington International Airport.## de Havilland Engines.As well as a prolific aircraft builder, de Havilland was also a significant producer of aero engines. This went against usual practice: usually engines are designed and produced by a dedicated company though in the UK the Bristol Aeroplane Company had a substantial engine business and Armstrong Whitworth.

De Havilland. Hertfordshire County Council for educational use: the site was then developed as Hatfield Technical College, which is now the College Lane Campus of the University of Hertfordshire. De Havilland was purchased by Hawker Siddeley in 1960 and merged into British Aerospace in 1978. The BAE site then closed in 1993, and the University of Hertfordshire purchased part of the site for the de Havilland Campus. Hatfield's aerospace history is recorded today in the names of local streets, such as Comet Way and Dragon Road.In September 2003 part of the former British aerospace site became the de Havilland campus of the.


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Bedside. Bedside is a 1934 American pre-Code drama film starring Warren William, Jean Muir and Allen Jenkins. A man passes himself off as a doctor. Warren William as Bob Brown Jean Muir as Caroline Grant Allen Jenkins as Sam Sparks David Landau as Smith Katharine Sergava (Kathryn Sergava) as Mimi Maritza Henry O'Neill as Dr. William Chester Donald Meek as Dr. George Wiley Renee Whitney as Mme. Varsova Walter Walker as Dr. Michaels Marjorie Lytell as Patient with Sprained Ankle Frederick Burton as Hospital Superintendent Philip Faversham as Intern Attending Caroline (as Phillip Faversham) Louise Beavers as Pansy Earle Foxe as.


Question: What is the height of this place in metre?

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Fürstenzug. of Saxony (1547–1553)Augustus, Elector of Saxony (1553–1586)Christian I, Elector of Saxony (1586–1591)Christian II, Elector of Saxony (1591–1611)John George I, Elector of Saxony (1611–1656)John George II, Elector of Saxony (1656–1680)John George III, Elector of Saxony (1680–1691)John George IV, Elector of Saxony (1691–1694)Augustus II the Strong (1694–1733)Augustus III of Poland (1733–1763)Frederick Christian, Elector of Saxony (1763)Frederick Augustus I of Saxony (1763–1827)Anthony of Saxony (1827–1836)Frederick Augustus II of Saxony (1836–1854)John of Saxony (1854–1873)Albert of Saxony (1873–1902)George of Saxony (1902–1904)## Dimensions.The Fürstenzug is 101.9 (m) long and 10.5 (m) high. Due to 18 windows in the upper part, the tile area comprises only 968.


Question: What is the litter size of this bird?

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Laughing falcon. to 800 (g) compared to the males' 410 to 680 (g).Adults have a pale buff head, changeable between a more brownish and an almost white hue according to feather wear and individual variation. The broad black face mask stretches across the neck as a narrow collar, bordered with white. On the crown, the feather shafts are dark, producing a somewhat streaked effect. The upper wings and back are blackish brown. The uppertail coverts are whitish buff again, and the rectrices are barred black and whitish, ending in white. The underside is uniformly pale buff; there may be a bit of.

Laughing falcon. and "guaycurú" (Guaraní).## Distribution and habitat.It is found from both coastal slopes of Mexico through Central and South America south to the Peruvian Amazon and Bolivian Amazon region, practically all of Brazil, and northern Argentina and Paraguay, at altitudes up to 1500 (m) (rarely to 2400 (m) in Colombia), though it is often absent from mountainous regions. It occupies varied habitats, usually including at least scattered trees; it prefers humid regions to arid ones and tends to avoid closed forest. It is generally not migratory, though in some areas it may make seasonal movements.## Behavior.The flight is slow, with quick,.

Laughing falcon. imitate the call of a laughing falcon in order to cure a snake bite.Bassie-Sweet, Karen (2015): "The Ch'ol Maya of Chiapas"; University of Oklahoma Press, Norman. Channing, Keith & Hawk Conservancy Trust (HCT) (1996). Cuervo, Andrés M.; Hernández-Jaramillo, Alejandro; Cortés-Herrera, José Oswaldo & Laverde, Oscar (2007): Nuevos registros de aves en la parte alta de la Serranía de las Quinchas, Magdalena medio, Colombia [New bird records from the highlands of Serranía de las Quinchas, middle Magdalena valley, Colombia]. "Ornitología Colombiana" 5: 94-98 [Spanish with English abstract]. PDF fulltext Howell, Steven N.G. & Webb, Sophie (1995): "A Guide to the Birds.

Laughing falcon. of Mexico and Northern Central America". Oxford University Press, Oxford & New York. Jiménez, Mariano II & Jiménez, Mariano G. (2003): El Zoológico Electrónico – El Halcón Guaicurú "Herpetotheres cachinnans". Version of 2003-AUG-01. Retrieved 2007-FEB-22. Lewis, Charlton T. & Short, Charles (1879): "căchinno. In: A Latin Dictionary". Clarendon Press, Oxford. HTML fulltext Stiles, F. Gary & Skutch, Alexander Frank (1989): "A guide to the birds of Costa Rica". Comistock, Ithaca. Remsen, J. V., Jr.; Cadena, C. D.; Jaramillo, A.; Nores, M.; Pacheco, J. F.; Robbins, M. B.; Schulenberg, T. S.; Stiles, F. G.; Stotz, D. F.; and Zimmer, K. J.

Laughing falcon. Version (2008-12-22). A classification of the bird species of South America. American Ornithologists' Union. HTML fulltext Woodhouse, S.C. (1910): English-Greek Dictionary – A Vocabulary of the Attic Language. George Routledge & Sons Ltd., Broadway House, Ludgate Hill, E.C. Searchable JPEG fulltext Photos, videos and observations at Cornell Lab of Ornithologys Birds of the WorldLaughing falcon videos, photos & sounds on the Internet Bird Collection.


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Kon-Tiki expedition. attempt to show a possible link between the civilization of ancient Egypt and the New World.## The voyage."Kon-Tiki" left Callao, Peru, on the afternoon of April 28, 1947. To avoid coastal traffic it was initially towed 50 (mi) out by the Peruvian Navy fleet tug "Guardian Rios", then sailed roughly west carried along on the Humboldt Current.On 2 July Heyerdahl writes about an encounter with a rogue wave; in his book he describes a "Three Sister" phenomenon: "During a night-shift with quiet seas appears an 'abnormal huge wave' followed by two more waves. The raft is being swept up and.

Kon-Tiki expedition. built in Constitución, Chile, leaving on April 13, 1958, towards Callao, then towards the Marquesas. It missed its target and after four months, the raft began to sink. The crew built a new smaller raft, the "Tahiti Nui III", in the ocean out of the more buoyant parts of the "Tahiti Nui II". They were swept towards Cook Islands where on August 30, the raft went aground and was wrecked at Rakahanga atoll. Éric de Bisschop died in this accident.## "Tangaroa" (1965).A Peruvian expedition led by Carlos Caravedo crossed the Pacific Ocean in 1965 in 115 days in a raft.


Question: What is the closest parent taxonomy of this animal?

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European green lizard. The European green lizard ("Lacerta viridis") is a large lizard distributed across European midlatitudes from Slovenia and eastern Austria to as far east as the Black Sea coasts of Ukraine and Turkey. It is often seen sunning on rocks or lawns, or sheltering amongst bushes.## Taxonomy.There is an ongoing discussion as to whether "Lacerta viridis" and "Lacerta bilineata" are separate species. Genetic data weakly supports their separation into two species but more investigation needs to be done.## Description.The lizard reaches up to 15 (cm) from the tip of the muzzle to the cloaca. The tail can be up to twice.


Question: What country does this building belong to?

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Trausnitz Castle. Trausnitz Castle is a medieval castle situated in Landshut, Bavaria in Germany.It was the home of the Wittelsbach dynasty, and it served as their ducal residence for Lower Bavaria from 1255–1503, and later as the seat of the hereditary rulers of the whole of Bavaria. The castle was founded in 1204 by Duke Ludwig I.## Castle features.## Knights' Hall.The Knights' Hall of Castle Trausnitz belongs to the main buildings of the 13th century and there were already around 1260/70. The room is 245 m2 and is separated in two naves, to four "Jochen" a nave. The constructions that were used.

Trausnitz Castle. belong to the time period of the so-called "Zisterziensergotik".Today the Knights' Hall is used for festival banquets or for short exhibitions.## Tower Terrace (Söller).The "Loggia", already called so since 1493, was finished in the 16th century. The Tower Terrace sports a great view of the city through the round arcs. On the east side there is a stair tower. The wooden ceiling with shaped rosettes is descended from the time of Wilhelm V. There is a stone walled music platform on the south side of the room. The "Söller" is today used for many different functions, and it holds a.

Trausnitz Castle. and 17th centuries, the cabinet of curiosities was in essence a personal collection of rare, unknown and marvelous objects. Popular, visual and encyclopedic in their approach, these cabinets, or Wunderkammern, included a diversity of specimens from both known and newly discovered worlds. These collections of curious objects that are seemingly not human in nature require the idea or application of human characteristics and traits to describe their inhuman state.The Trausnitz Chamber of Art and Curiosities which was arranged by Prince Wilhelm in 1579 and then taken to Munich is a collection of 750 exhibits including works of art, treasures from.

Trausnitz Castle. the Orient and curiosities typical of the collections owned by rulers in the Renaissance era. It was reopened in September 2004 as one part of the Bavarian National Museum. The chamber is divided into four different themes. "ARTIFICIALA"—wondrous legerdemains—contains sumptuous bronze and painting but also midget carving of plum stones. "NATURALIA"—the wonder of nature—gets shown stuffed animals, extraordinary horns, mussels and minerals. The hall of "EXOTICA"—marvellousness from foreign countries—contains craft of corals, ivory and nacre whereas "SCIENTIFICA"—scientific arranges the world—shows scientific instruments of rational acquisition of the world in year 1600.## History.Trausnitz Castle is situated atop a hill above Landshut.

Trausnitz Castle. Before the 16th century, it had the same name as the town, Landshut, which translates into "protector of the land". Previously, the castle guarded over the city and the surrounding land. The size of the castle has remained almost the same since Louis I of Bavaria in 1204. The castle was completed by the time of Emperor Frederick II's visit in 1235.During the first half of the 13th century, Trausnitz represented not only the centre of imperial politics but also of Staufer culture. Landshut was visited by famous minstrel singers, including Walter von der Vogelweide and Tannhäuser, during this period.

Trausnitz Castle. The patronage of art by the Dukes of Bavaria was so high that they sent for a sculptor from Strasbourg who created jewellery for a sculpture that now stands in the Castle's "Burgkapelle".The wealthy Duke of Landshut repeatedly renovated and expanded the buildings in Burg Trausnitz during the 15th century. The Dürnitz was built during this time. The outer defensive ring of walls were heightened and extended for the defensive towers.Duke Louis X of Bavaria furnished the castle in 1516 in the south German Renaissance style, though few examples remain today. The arcades of the courtyard were created 1568–1578 by.

Trausnitz Castle. Friedrich Sustris for Crown Prince William. Many paintings in the Florentine style were added at this time, but most were lost due to fires over the years. Later, Prince Ferdinand Maria (1675–1679) undertook restoration of the burned paintings and decorated other rooms with other paintings.During the 18th century, the castle was used a barracks and a prison for noble prisoners. At the beginning of the 19th century it was used as a hospital.King Ludwig II of Bavaria (who was the creator of Neuschwanstein Castle in Füssen) ordered the decoration of a new splendid private apartment in the second floor of.

Trausnitz Castle. the prince's wing (1869-1873).In 1961, a fire destroyed much of the interior decoration, including the king's rooms.http://www.schloesser.bayern.de/englisch/palace/objects/la_traus.htmhttp://www.burg-trausnitz.de/englisch/castle/index.htm.


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La Recoleta Cemetery. () and a church, Our Lady of Pilar ("), built in 1732.The order was disbanded in 1822, and the garden of the convent was converted into the first public cemetery in Buenos Aires. Inaugurated on 17 November of the same year under the name of " (Northern Cemetery), those responsible for its creation were the then-Governor Martin Rodríguez, who would be eventually buried in the cemetery, and government minister Bernardino Rivadavia.The 1822 layout was done by French civil engineer Próspero Catelin, who also designed the current facade of the Buenos Aires Metropolitan Cathedral. The cemetery was last remodeled in 1881,.


Question: What is the closest parent taxonomy of this bird?

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Red-throated loon. The red-throated loon (North America) or red-throated diver (Britain and Ireland) (Gavia stellata) is a migratory aquatic bird found in the northern hemisphere. The most widely distributed member of the loon or diver family, it breeds primarily in Arctic regions, and winters in northern coastal waters. Ranging from 55 to 67 (cm) in length, the red-throated loon is the smallest and lightest of the world's loons. In winter, it is a nondescript bird, greyish above fading to white below. During the breeding season, it acquires the distinctive reddish throat patch which is the basis for its common name. Fish form.

Red-throated loon. the others in terms of morphology, behaviour, ecology and breeding biology and may be the basal lineage of the genus. It is thought to have evolved in the Palearctic, and then to have expanded into the Nearctic. Analysis of molecular data together with the fossil record suggests the lineage of the red-throated loon diverged from that giving rise to the other loon species around 21.4 million years ago in the Miocene, and that it may be most closely related to the fossil Pliocene species "Gavia howardae".The genus name "Gavia" comes from the Latin for "sea mew", as used by ancient.

Red-throated loon. Roman naturalist Pliny the Elder. The specific epithet "stellata" is Latin for "set with stars" or "starry", and refers to the bird's speckled back in its non-breeding plumage. Members of the family Gavidae are known as "loons" in North America and "divers" in Great Britain and Ireland. The International Ornithological Congress uses the name "red-throated loon" for this species. "Diver" refers to the family's underwater method of hunting for prey, while "red-throated" is a straightforward reference to the bird's most distinctive breeding plumage feature. The word "loon" is thought to have derived from the Swedish "lom", the Old Norse or.


Question: Where is this plant originally discovered?

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Olive. The olive, botanical name Olea europaea, meaning 'European olive' in Latin, is a species of small tree or shrub in the family Oleaceae, found traditionally in the Mediterranean Basin. When in shrub form, it is known as "Olea europaea" 'Montra', dwarf olive, or little olive. The species is cultivated in all the countries of the Mediterranean, as well as in Australia, New Zealand, North and South America and South Africa. "Olea europaea" is the type species for the genus "Olea".The olive's fruit, also called an "olive", is of major agricultural importance in the Mediterranean region as the source of olive.

Olive. oil; it is one of the core ingredients in Mediterranean cuisine. The tree and its fruit give their name to the plant family, which also includes species such as lilac, jasmine, forsythia, and the true ash tree.Thousands of cultivars of the olive tree are known. Olive cultivars may be used primarily for oil, eating, or both. Olives cultivated for consumption are generally referred to as "table olives". About 90% of all harvested olives are turned into oil, while about 10% are used as table olives.## Etymology.The word "olive" derives from Latin ' ("olive fruit", "olive tree"), possibly through Etruscan 𐌀𐌅𐌉𐌄𐌋𐌄.

Olive. ("eleiva") from the archaic Proto-Greek form *ἐλαίϝα (*"elaíwa") (Classic Greek ', "olive fruit", "olive tree"). The word "oil" originally meant "olive oil", from ', (', "olive oil"). Also in multiple other languages the word for "oil" ultimately derives from the name of this tree and its fruit. The oldest attested forms of the Greek words are the Mycenaean , ', and , ' or , "", written in the Linear B syllabic script.## Description.The olive tree, "Olea europaea", is an evergreen tree or shrub native to Mediterranean Europe, Asia, and Africa. It is short and squat and rarely exceeds 8.

Olive. when ripe, thinner-fleshed and smaller in wild plants than in orchard cultivars. Olives are harvested in the green to purple stage. Canned black olives have often been artificially blackened (see below on processing) and may contain the chemical ferrous gluconate to improve the appearance. "Olea europaea" contains a pyrena commonly referred to in American English as a "pit", and in British English as a "stone".## Taxonomy.The six natural subspecies of "Olea europaea" are distributed over a wide range:"Olea europaea" subsp. "europaea" (Mediterranean Basin)"Olea europaea" var. "sylvestris", considered the "wild" olive of the Mediterranean, is a variety characterized by a smaller.

Olive. consistent crops.## History.## Mediterranean Basin.Fossil evidence indicates the olive tree had its origins 20–40 million years ago in the Oligocene, in what is now corresponding to Italy and the eastern Mediterranean Basin. Around 100,000 years ago, olives were used by humans in Africa, on the Atlantic coast of Morocco, for fuel management and most probably for consumption. Wild oleasters were present and collected in the Eastern Mediterranean since ~19,000 BP. The genome of cultivated olives reflects their origin from oleaster populations in the Eastern Mediterranean. The olive plant was first cultivated some 7,000 years ago in Mediterranean regions.The cultivated olive.

Olive. Macedonia and other places around the Mediterranean, indicating that this genus is an original element of the Mediterranean flora. Fossilized leaves of "olea" were found in the palaeosols of the volcanic Greek island of Santorini and dated to about 37,000 BP. Imprints of larvae of olive whitefly "Aleurobus olivinus" were found on the leaves. The same insect is commonly found today on olive leaves, showing that the plant-animal co-evolutionary relations have not changed since that time. Other leaves found on the same island are dated back to 60,000 BP, making them the oldest known olives from the Mediterranean.## Outside the.

Olive. Mediterranean.Olives are not native to the Americas. Spanish colonists brought the olive to the New World, where its cultivation prospered in present-day Peru, Chile, and Argentina. The first seedlings from Spain were planted in Lima by Antonio de Rivera in 1560. Olive tree cultivation quickly spread along the valleys of South America's dry Pacific coast where the climate was similar to the Mediterranean. Spanish missionaries established the tree in the 18th century in California. It was first cultivated at Mission San Diego de Alcalá in 1769 or later around 1795. Orchards were started at other missions, but in 1838, an.

Olive. inspection found only two olive orchards in California. Cultivation for oil gradually became a highly successful commercial venture from the 1860s onward.In Japan, the first successful planting of olive trees happened in 1908 on Shodo Island, which became the cradle of olive cultivation in Japan. An estimated 865 million olive trees were in the world as of 2005, and the vast majority of these were found in Mediterranean countries, with traditionally marginal areas accounting for no more than 25% of olive-planted area and 10% of oil production.## Symbolic connotations.Olive oil has long been considered sacred and holy. The olive branch.

Olive. olive tree itself, as well as olive oil and olives, play an important role in the Bible.## Islam.The olive tree and olive oil are mentioned seven times in the Quran, and the olive is praised as a precious fruit. Olive tree and olive oil health benefits have been propounded in prophetic medicine. Muhammad is reported to have said: "Take oil of olive and massage with it – it is a blessed tree" (Sunan al-Darimi, 69:103). Olives are substitutes for dates (if not available) during Ramadan fasting, and olive tree leaves are used as incense in some Muslim Mediterranean countries.## United.

Olive. olive oil, fine wood, olive leaf, ornamental reasons, and the olive fruit. About 90% of all harvested olives are turned into oil, while about 10% are used as table olives. The olive is one of the "trinity" or "triad" of basic ingredients in Mediterranean cuisine, the other two being wheat for bread, pasta, and couscous; and the grape for wine.## Olive oil.Olive oil is a liquid fat obtained from olives, produced by pressing whole olives and extracting the oil. It is commonly used in cooking, for frying foods or as a salad dressing. It is also used in cosmetics, pharmaceuticals,.

Olive. the water treatment stage and involves a mixed yeast/bacteria ecosystem. Sometimes, the olives are lightly cracked with a blunt instrument to trigger fermentation and speed up the fermentation process. Once debittered, the olives are brined to concentrations of 8–12% NaCl and acid corrected and are then ready to eat.Salt-cured fermentationApplied only to ripe olives, since it is only a light fermentation. They are usually produced in Morocco, Turkey, and other eastern Mediterranean countries. Once picked, the olives are vigorously washed and packed in alternating layers with salt. The high concentration of salt draws the moisture out of olives, dehydrating and.

Olive. (55.6 (km)) as the limit. Modern experience does not always confirm this, and, though showing a preference for the coast, they have long been grown further inland in some areas with suitable climates, particularly in the southwestern Mediterranean (Iberia and northwest Africa) where winters are mild. An article on olive tree cultivation in Spain is brought down in Ibn al-'Awwam's 12th-century agricultural work, "Book on Agriculture".Olives are cultivated in many regions of the world with Mediterranean climates, such as South Africa, Chile, Peru, Pakistan, Australia, Oregon, and California, and in areas with temperate climates such as New Zealand. They are.

Olive. the most extensively cultivated fruit crops in the world. In 2011, about 9.6 (e6ha) were planted with olive trees, which is more than twice the amount of land devoted to apples, bananas, or mangoes. Only coconut trees and oil palms command more space. Cultivation area tripled from 2.6 to 7.95 (e6ha) between 1960 and 1998 and reached a peak of 10 (e6ha) in 2008. The 10 most-producing countries, according to the Food and Agriculture Organization, are all located in the Mediterranean region and produce 95% of the world's olives.## Nutrition.One hundred grams of cured green olives provide 146 calories, are.


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Avenue of the Baobabs. The Avenue of the Baobabs, or Alley of the Baobabs, is a prominent group of Grandidier's baobabs ("Adansonia grandidieri") lining the dirt road between Morondava and Belon'i Tsiribihina in the Menabe region of western Madagascar. Its striking landscape draws travelers from around the world, making it one of the most visited locations in the region. It has been a center of local conservation efforts, and was granted temporary protected status in July 2007 by the Ministry of Environment, Water and Forests – a step toward making it Madagascar's first natural monument.## Description.Along a 260 (m) stretch of the road is.


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Richmond Castle. Richmond Castle in Richmond, North Yorkshire, England, stands in a commanding position above the River Swale, close to the centre of the town of Richmond. It was originally called Riche Mount, 'the strong hill'. The castle was constructed by Alan Rufus from 1071 onwards following the Norman Conquest of England, and the "Domesday Book" of 1086 refers to 'a castlery' at Richmond.In the 12th century, his great-nephew Conan expanded the castle and built the keep. Although it was derelict by 1540, it was restored centuries later. The property is the best-preserved early Norman castle in England and an important tourist.

Richmond Castle. attraction.## Layout.Richmond Castle consists of four main parts: a triangular main enclosure, an outer enclosure to the east, a keep at the northern corner of the main enclosure, and a small enclosure around the keep.## History.In 1069 William the Conqueror had put down a rebellion at York which was followed by his "harrying of the North" – an act of ethnic cleansing which depopulated large areas for a generation or more. As a further punishment, he divided up the lands of North Yorkshire among his most loyal followers. Alan Rufus, of Brittany, received the borough of Richmond and began constructing.

Richmond Castle. the castle became the headquarters of the North Yorkshire Militia, and a military barracks block was constructed in the great courtyard. For two years, from 1908 to 1910, the castle was the home of Robert Baden-Powell, later founder of the Boy Scouts, while he commanded the Northern Territorial Army but the barracks building was demolished in 1931. The castle was used during the First World War as the base of the Non-Combatant Corps made up of conscientious objectors – conscripts who refused to fight. It was also used to imprison some conscientious objectors who refused to accept army discipline and.


Question: What is the mohs' hardness of this material?

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Water. (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.## Polar molecule.In a water molecule, the hydrogen atoms form a 104.5° angle with the oxygen atom. The hydrogen atoms are close to two corners of a tetrahedron centered on the oxygen. At the other two corners are "lone pairs" of valence electrons that do not participate in the bonding. In a perfect tetrahedron, the atoms would form a 109.5° angle, but the repulsion between the lone pairs is greater than the repulsion between.


Question: What is the closest upper taxonomy of this bird?

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Red-vented bulbul. The red-vented bulbul (Pycnonotus cafer) is a member of the bulbul family of passerines. It is a resident breeder across the Indian subcontinent, including Sri Lanka extending east to Burma and parts of Bhutan and Nepal. It has been introduced in many other parts of the world and has established itself in New Zealand, Argentina, Tonga and Fiji, as well as parts of Samoa, Australia, USA and Cook Islands. It is included in the list of the world's 100 worst invasive alien species.## Taxonomy and systematics.In 1760 the French zoologist Mathurin Jacques Brisson included a description of the red-vented bulbul.

Red-vented bulbul. red-vented bulbul. Linnaeus included a brief description, coined the binomial name "Turdus cafer" and cited Brisson's work. The red-vented bulbul does not occur in Africa. The type location was later changed to Sri Lanka and then in 1952 designated as Pondicherry in India by the German naturalist Erwin Stresemann. The specific epithet "cafer" is New Latin for South Africa. This species is now placed in the genus "Pycnonotus" that was introduced by the German zoologist Friedrich Boie in 1826.Two formerly designated races, "P. c. nigropileus" in southern Burma and "P. c. burmanicus" of northern Burma, are now considered as hybrids.##.

Red-vented bulbul. race "wetmorei" is between "cafer", "humayuni" and "bengalensis". The Sri Lankan race "haemorrhous" (="haemorrhousus") has a dark mantle with narrow pale edges. Race "humayuni" is known to hybridize with "Pycnonotus leucogenys" and these hybrids were once described as a subspecies "magrathi" marked by their pale rumps and yellow-orange or pink vents. In eastern Myanmar there is some natural hybridization with "Pycnonotus aurigaster".Sexes are similar in plumage, but young birds are duller than adults. The typical call has been transcribed as "ginger beer", but a number of sharp single note calls sounding like "pick" are also produced. Their alarm calls are.

Red-vented bulbul. frequently kept as cage pets and for fighting especially in the Carnatic region. They would be held on the finger with a thread attached and when they fought they would seize the red feathers of the opponents.In the state of Assam, India, (the Bulbul (বুলবুলী) bird as it is known in Assamese), the male birds were held captive for a few days and were engaged in fights as a spectator sport in the Bihu festival during the Ahom rule. This practice was banned in January 2016. Bellary, Sadananda A; Desai,RN (2000) Unusual nesting activity of the Red-vented Bulbul "Pycnonotus cafer":.

Red-vented bulbul. two peculiar features. "Newsletter for Birdwatchers" 40(6):83–84. Chowdhury, SR; Bhattacharyya, SP (1989) Circannual variation in the alveolar histodynamics and secretory activity of the uropygial gland of the male Redvented Bulbul "Pycnonotus cafer" (Linnaeus). Pavo 27(1&2), 5–14. Dasgupta, P; Bhattacharyya, SP (1988) Circannual changes in the testicular activity of the Red-vented Bulbul "Pycnonotus cafer" (Linnaeus). Pavo 26(1&2):37–48. Deignan,HG (1949) Races of "Pycnonotus cafer" (Linnaeus) and "P. aurigaster" (Vieillot) in the Indo-Chinese subregion. J. Washington Acad. Sci. 39(8):273–279. Vijayan, VS. (1975) Ecological isolation of bulbuls (Family Pycnonotidae, Class Aves) with special reference to "Pycnonotus cafer cafer" (Linn.) and "Pycnonotus luteolus luteolus" (Lesson).