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

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Stylophorum diphyllum. Stylophorum diphyllum, commonly called the celandine poppy or wood poppy, is an herbaceous plant in the poppy family (Papaveraceae). It is native to North America, where it is found in the eastern United States and Ontario. Its typical natural habitat is moist forests over calcareous rock, particularly in ravines.It is occasionally cultivated for its bright yellow flowers. The common name is derived from greater celandine ("Chelidonium majus"), a closely related European plant with similar flowers and leaves.## Description."Stylophorum diphyllum" is an herbaceous perennial. It grows to about 1.5 (feet) tall, from underground rhizomes. Leaves are pinnately cut and lobed. They.

Stylophorum diphyllum. grow from the base of the plant, and in a pair at the top of the flowering stems. Apart from its normal sap, "Stylophorum diphyllum" produces a yellow-orange latex that stains.In spring, the deep yellow flowers of the celandine poppy appear as a brilliant display on the forest floor. The flowers have 4 yellow petals, two soon-falling sepals, many yellow-orange stamens, and a single knobby stigma. They appear singly or in umbels of two to four flowers from early spring to early summer. The flowers issue from between a pair of leaves at the top of the flowering stems. They.

Stylophorum diphyllum. produce pollen, but no nectar.After fertilization, a bristly blue-green pod hangs below the leaves. Seeds with white elaiosomes ripen in midsummer and the pod opens by four flaps.## Propagation.Propagation is done by seed or by dividing established clumps in spring. It grows best in moist, high-humus soil, and prefers to be in the shade. Division should be done early in the morning, preferably on a cloudy and mild day.Plants are relatively long lived and readily self-seed under garden conditions.## Conservation."Stylophorum diphyllum" is a conservative species, and is somewhat uncommon throughout its range. Forest clearance is responsible for the loss of.

Stylophorum diphyllum. some stands of this species. As the wood poppy requires semi-shaded conditions, even selective logging can have negative effects by creating large openings that allow too much sun to reach the forest floor.Due to its limited distribution in Canada, it is listed under Ontario's Endangered Species Act, 2007, which protects the species and its habitat. One Ontario population of the wood poppy is in a conservation area. Bioimages.


Question: What is the length of the incubation period (in day) of this bird's egg?

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Great kiskadee. Tobago in about 1970.## Taxonomy.The great kiskadee was described and illustrated in 1648 by the German naturalist Georg Marcgrave in the "Historia Naturalis Brasiliae". He used the name , the word for a large flycatcher in the Tupi language. In 1760 the French zoologist Mathurin Jacques Brisson included a description of the species in his "Ornithologie" based on a specimen collected in Cayenne, French Guiana. He used the French name and the Latin name . Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. At.

Great kiskadee. The nest is placed in a wide range of sites, often in an exposed position high up in a tree or on man-made structures. Occasionally the nest is placed in a cavity. The clutch is 3 to 4 eggs. These are moderately glossy, light yellowish cream in colour with purplish black and purplish brown spots. The average size is 27.9 x 20.0 (mm). Only the female incubates the eggs; the male guards the nest while she leaves the nest to feed. The eggs hatch after 16–17 days. The chicks are fed by both parents and fledge after 17–18 days.## Food.


Question: What equipment or engine is used by this item to provide power?

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Electric motor. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy.Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators.Electric.

Electric motor. braking with traction motors, electric motors can be used in reverse as generators to recover energy that might otherwise be lost as heat and friction.Electric motors produce linear or rotary force (torque) intended to propel some external mechanism, such as a fan or an elevator. An electric motor is generally designed for continuous rotation, or for linear movement over a significant distance compared to its size. Magnetic solenoids are also transducers that convert electrical power to mechanical motion, but can produce motion over only a limited distance.## History.## Early motors.Before modern electromagnetic motors, experimental motors that worked by electrostatic force.

Electric motor. persistent electric currents. Hans Christian Ørsted discovered in 1820 that an electric current creates a magnetic field, which can exert a force on a magnet. It only took a few weeks for André-Marie Ampère to develop the first formulation of the electromagnetic interaction and present the Ampère's force law, that described the production of mechanical force by the interaction of an electric current and a magnetic field. The first demonstration of the effect with a rotary motion was given by Michael Faraday on 3 September 1821 in the basement of the Royal Institution. A free-hanging wire was dipped into a.

Electric motor. pool of mercury, on which a permanent magnet (PM) was placed. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. Faraday published the results of his discovery in the "Quarterly Journal of Science", and sent copies of his paper along with pocket-sized models of his device to colleagues around the world so they could also witness the phenomenon of electromagnetic rotations. This motor is often demonstrated in physics experiments, substituting brine for (toxic) mercury. Barlow's wheel was an early refinement.

Electric motor. to this Faraday demonstration, although these and similar homopolar motors remained unsuited to practical application until late in the century.In 1827, Hungarian physicist Ányos Jedlik started experimenting with electromagnetic coils. After Jedlik solved the technical problems of continuous rotation with the invention of the commutator, he called his early devices "electromagnetic self-rotors". Although they were used only for teaching, in 1828 Jedlik demonstrated the first device to contain the three main components of practical DC motors: the stator, rotor and commutator. The device employed no permanent magnets, as the magnetic fields of both the stationary and revolving components were produced.

Electric motor. then higher performance.In 1855, Jedlik built a device using similar principles to those used in his electromagnetic self-rotors that was capable of useful work. He built a model electric vehicle that same year.A major turning point came in 1864, when Antonio Pacinotti first described the ring armature (although initially conceived in a DC generator, i.e. a dynamo). This featured symmetrically-grouped coils closed upon themselves and connected to the bars of a commutator, the brushes of which delivered practically non-fluctuating current. The first commercially successful DC motors followed the developments by Zénobe Gramme who, in 1871, reinvented Pacinotti's design and adopted.

Electric motor. from such tasks as handling grain or pumping water. Household uses (like in washing machines, dishwashers, fans, air conditioners and refrigerators (replacing ice boxes)) of electric motors reduced heavy labor in the home and made higher standards of convenience, comfort and safety possible. Today, electric motors consume more than half of the electric energy produced in the US.## AC motors.In 1824, French physicist François Arago formulated the existence of rotating magnetic fields, termed Arago's rotations, which, by manually turning switches on and off, Walter Baily demonstrated in 1879 as in effect the first primitive induction motor. In the 1880s many.

Electric motor. stator, which does not. It also includes two electrical parts, a set of magnets and an armature, one of which is attached to the rotor and the other to the stator, together forming a magnetic circuit: Field magnets - The magnets create a magnetic field that passes through the armature. These can be electromagnets or permanent magnets. The field magnet is usually on the stator and the armature on the rotor, but in some types of motor these are reversed.## Bearings.The rotor is supported by bearings, which allow the rotor to turn on its axis. The bearings are in turn.

Electric motor. supported by the motor housing.## Rotor.The rotor is the moving part that delivers the mechanical power. The rotor typically holds conductors that carry currents, which the magnetic field of the stator exerts force on to turn the shaft. Alternatively, some rotors carry permanent magnets, and the stator holds the conductors. Permanent magnets offer high efficiency over a larger operating speed and power range.An air gap between the stator and rotor allows it to turn. The width of the gap has a significant effect on the motor's electrical characteristics. It is generally made as small as possible, as a large gap.

Electric motor. weakens performance. It is the main source of the low power factor at which motors operate. The magnetizing current increases and the power factor decreases with the air gap, so narrow gaps are better. Conversely, gaps that are too small may pose mechanical problems in addition to noise and losses.The motor shaft extends through the bearings to the outside of the motor, where the load is applied. Because the forces of the load are exerted beyond the outermost bearing, the load is said to be overhung.## Stator.The stator surrounds the rotor, and usually holds field magnets, which are either electromagnets.

Electric motor. consisting of wire windings around a ferromagnetic iron core or permanent magnets. These create a magnetic field that passes through the rotor armature, exerting force on the windings. The stator core is made up of many thin metal sheets that are insulated from each other, called laminations. Laminations are used to reduce energy losses that would result if a solid core were used. Resin-packed motors, used in washing machines and air conditioners, use the damping properties of resin (plastic) to reduce noise and vibration. These motors encapsulate the stator in plastic.## Armature.The armature consists of wire windings on a ferromagnetic.

Electric motor. core. Electric current passing through the wire causes the magnetic field from the field magnet to exert a force (Lorentz force) on it, turning the rotor, which delivers the mechanical output. Windings are wires that are laid in coils, usually wrapped around a laminated, soft, iron, ferromagnetic core so as to form magnetic poles when energized with current.Electric machines come in salient- and nonsalient-pole configurations. In a salient-pole motor the ferromagnetic cores on the rotor and stator have projections called poles facing each other, with a wire winding around each pole below the pole face, which become north or south.

Electric motor. poles of the magnetic field when current flows through the wire. In a nonsalient-pole (or distributed field or round-rotor) motor, the ferromagnetic core is a smooth cylinder, with the windings distributed evenly in slots about the circumference. Supplying alternating current in the windings creates poles in the core that rotate continuously. A shaded-pole motor has a winding around part of the pole that delays the phase of the magnetic field for that pole.## Commutator.A commutator is a rotary electrical switch that supplies current to the rotor. It periodically reverses the flow of current in the rotor windings as the shaft.

Electric motor. each rotor winding would reverse with each half turn, so the rotor would stop. Commutators are inefficient and commutated motors have been mostly replaced by brushless direct current motors, permanent magnet motors, and induction motors.## Motor supply and control.## Motor supply.A DC motor is usually supplied through a split ring commutator as described above. AC motors' commutation can be achieved using either a slip ring commutator or external commutation. It can be fixed-speed or variable-speed control type, and can be synchronous or asynchronous. Universal motors can run on either AC or DC.## Motor control.DC motors can be operated at variable.

Electric motor. speeds by adjusting the voltage applied to the terminals or by using pulse-width modulation (PWM).AC motors operated at a fixed speed are generally powered directly from the grid or through motor soft starters.AC motors operated at variable speeds are powered with various power inverter, variable-frequency drive or electronic commutator technologies.The term electronic commutator is usually associated with self-commutated brushless DC motor and switched reluctance motor applications.## Types.Electric motors operate on one of three physical principles: magnetism, electrostatics and piezoelectricity.In magnetic motors, magnetic fields are formed in both the rotor and the stator. The product between these two fields gives rise.

Electric motor. to a force, and thus a torque on the motor shaft. One, or both, of these fields must change with the rotation of the rotor. This is done by switching the poles on and off at the right time, or varying the strength of the pole.The main types are DC motors and AC motors, with the latter replacing the former. AC electric motors are either asynchronous or synchronous.Once started, a synchronous motor requires synchrony with the moving magnetic field's speed for all normal torque conditions.In synchronous machines, the magnetic field must be provided by means other than induction, such as.

Electric motor. from separately excited windings or permanent magnets.A fractional-horsepower motor either has a rating below about 1 horsepower (0.746 kW), or is manufactured with a standard-frame size smaller than a standard 1 HP motor. Many household and industrial motors are in the fractional-horsepower class.Notes: Rotation is independent of the frequency of the AC voltage. Rotation is equal to synchronous speed (motor-stator-field speed). In SCIM, fixed-speed operation rotation is equal to synchronous speed, less slip speed. In non-slip energy-recovery systems, WRIM is usually used for motor-starting but can be used to vary load speed. Variable-speed operation. Whereas induction- and synchronous-motor drives are.

Electric motor. typically with either six-step or sinusoidal-waveform output, BLDC-motor drives are usually with trapezoidal-current waveform; the behavior of both sinusoidal and trapezoidal PM machines is, however, identical in terms of their fundamental aspects. In variable-speed operation, WRIM is used in slip-energy recovery and double-fed induction-machine applications. A cage winding is a shorted-circuited squirrel-cage rotor, a wound winding is connected externally through slip rings. Mostly single-phase with some three-phase.Abbreviations: BLAC – Brushless AC BLDC – Brushless DC BLDM – Brushless DC motor EC – Electronic commutator PM – Permanent magnet IPMSM – Interior permanent-magnet synchronous motor PMSM – Permanent magnet synchronous motor.

Electric motor. SPMSM – Surface permanent magnet synchronous motor SCIM – Squirrel-cage induction motor SRM – Switched reluctance motor SyRM – Synchronous reluctance motor VFD – Variable-frequency drive WRIM – Wound-rotor induction motor WRSM – Wound-rotor synchronous motor LRA – Locked-rotor amps: The current you can expect under starting conditions when you apply full voltage. It occurs instantly during start-up. RLA – Rated-load amps: The maximum current a motor should draw under any operating conditions. Often mistakenly called running-load amps, which leads people to believe, incorrectly, that the motor should always pull these amps. FLA – Full-load amps: Changed in 1976 to.

Electric motor. "RLA – rated-load amps".## Self-commutated motor.## Brushed DC motor.Most DC motors are small permanent magnet (PM) types. They contain a brushed internal mechanical commutation to reverse motor windings' current in synchronism with rotation.## Electrically excited DC motor.A commutated DC motor has a set of rotating windings wound on an armature mounted on a rotating shaft. The shaft also carries the commutator. Thus, every brushed DC motor has AC flowing through its windings. Current flows through one or more pairs of brushes that touch the commutator; the brushes connect an external source of electric power to the rotating armature.The rotating armature.

Electric motor. consists of one or more wire coils wound around a laminated, magnetically "soft" ferromagnetic core. Current from the brushes flows through the commutator and one winding of the armature, making it a temporary magnet (an electromagnet). The magnetic field produced interacts with a stationary magnetic field produced by either PMs or another winding (a field coil), as part of the motor frame. The force between the two magnetic fields rotates the shaft. The commutator switches power to the coils as the rotor turns, keeping the poles from ever fully aligning with the magnetic poles of the stator field, so that.

Electric motor. – A set of windings that produces a magnetic field. Commutation: A mechanical technique in which rectification can be achieved, or from which DC can be derived.The five types of brushed DC motor are: Shunt-wound Series-wound Compound (two configurations): Cumulative compound Differentially compounded Permanent magnet (not shown) Separately excited (not shown).## Permanent magnet.A permanent magnet (PM) motor does not have a field winding on the stator frame, relying instead on PMs to provide the magnetic field. Compensating windings in series with the armature may be used on large motors to improve commutation under load. This field is fixed and cannot.

Electric motor. be adjusted for speed control. PM fields (stators) are convenient in miniature motors to eliminate the power consumption of the field winding. Most larger DC motors are of the "dynamo" type, which have stator windings. Historically, PMs could not be made to retain high flux if they were disassembled; field windings were more practical to obtain the needed flux. However, large PMs are costly, as well as dangerous and difficult to assemble; this favors wound fields for large machines.To minimize overall weight and size, miniature PM motors may use high energy magnets made with neodymium; most are neodymium-iron-boron alloy. With.

Electric motor. their higher flux density, electric machines with high-energy PMs are at least competitive with all optimally designed singly-fed synchronous and induction electric machines. Miniature motors resemble the structure in the illustration, except that they have at least three rotor poles (to ensure starting, regardless of rotor position) and their outer housing is a steel tube that magnetically links the exteriors of the curved field magnets.## Electronic commutator (EC).## Brushless DC.Some of the problems of the brushed DC motor are eliminated in the BLDC design. In this motor, the mechanical "rotating switch" or commutator is replaced by an external electronic switch.

Electric motor. synchronised to the rotor's position. BLDC motors are typically 85%+ efficient, reaching up to 96.5%, while brushed DC motors are typically 75–80% efficient.The BLDC motor's characteristic trapezoidal counter-electromotive force (CEMF) waveform is derived partly from the stator windings being evenly distributed, and partly from the placement of the rotor's permanent magnets. Also known as electronically commutated DC or inside-out DC motors, the stator windings of trapezoidal BLDC motors can be single-phase, two-phase or three-phase and use Hall effect sensors mounted on their windings for rotor position sensing and low cost closed-loop commutator control.BLDC motors are commonly used where precise speed.

Electric motor. motors are usually used in small equipment such as computers and are generally used in fans to remove heat. They make little noise, which is an advantage in equipment that is affected by vibrations.Modern BLDC motors range in power from a fraction of a watt to many kilowatts. Larger BLDC motors rated up to about 100 kW are used in electric vehicles. They also find use in electric model aircraft.## Switched reluctance motor.The switched reluctance motor (SRM) has no brushes or permanent magnets, and the rotor has no electric currents. Torque comes from a slight misalignment of poles on the.

Electric motor. rotor with poles on the stator. The rotor aligns itself with the magnetic field of the stator, while the stator field windings are sequentially energized to rotate the stator field.The magnetic flux created by the field windings follows the path of least magnetic sending the flux through rotor poles that are closest to the energized poles of the stator, thereby magnetizing those poles of the rotor and creating torque. As the rotor turns, different windings are energized, keeping the rotor turning.SRMs are used in some appliances and vehicles.## Universal AC/DC motor.A commutated, electrically excited, series or parallel wound motor is.

Electric motor. referred to as a universal motor because it can be designed to operate on either AC or DC power. A universal motor can operate well on AC because the current in both the field and the armature coils (and hence the resultant magnetic fields) synchronously reverse polarity, and hence the resulting mechanical force occurs in a constant direction of rotation.Operating at normal power line frequencies, universal motors are often used in sub-kilowatt applications. Universal motors formed the basis of the traditional railway traction motor in electric railways. In this application, using AC power on a motor designed to run on.

Electric motor. DC would experience efficiency losses due to eddy current heating of their magnetic components, particularly the motor field pole-pieces that, for DC, would have used solid (un-laminated) iron. They are now rarely used.An advantage is that AC power may be used on motors that specifically have high starting torque and compact design if high running speeds are used. By contrast, maintenance is higher and lifetimes are shortened. Such motors are used in devices that are not heavily used, and have high starting-torque demands. Multiple taps on the field coil provide (imprecise) stepped speed control. Household blenders that advertise many speeds.

Electric motor. an asynchronous AC motor where power is transferred to the rotor by electromagnetic induction, much like transformer action. An induction motor resembles a rotating transformer, because the stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side. Polyphase induction motors are widely used in industry.## Cage and wound rotor.Induction motors may be divided into Squirrel Cage Induction Motors (SCIM) and Wound Rotor Induction Motors (WRIM). SCIMs have a heavy winding made up of solid bars, usually aluminum or copper, electrically connected by rings at the ends of the rotor. The.

Electric motor. bars and rings as a whole are much like an animal's rotating exercise cage.Currents induced into this winding provide the rotor magnetic field. The shape of the rotor bars determines the speed-torque characteristics. At low speeds, the current induced in the squirrel cage is nearly at line frequency and tends to stay in the outer parts of the cage. As the motor accelerates, the slip frequency becomes lower, and more current reaches the interior. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, a variable resistance is effectively.

Electric motor. steering wheels.Another common application is to control the throttle of an internal combustion engine with an electronic governor. The motor works against a return spring to move the throttle in accord with the governor output. The latter monitors engine speed by counting electrical pulses from the ignition system or from a magnetic pickup and depending on the speed, makes small adjustments to the amount of current. If the engine slows down relative to the desired speed, the current increases, producing more torque, pulling against the return spring and opening the throttle. Should the engine run too fast, the governor reduces.

Electric motor. the current, allowing the return spring to pull back and reduce the throttle.## Synchronous motor.A synchronous electric motor is an AC motor. It includes a rotor spinning with coils passing magnets at the same frequency as the AC and produces a magnetic field to drive it. It has zero slip under typical operating conditions. By contrast induction motors must slip to produce torque. One type of synchronous motor is like an induction motor except that the rotor is excited by a DC field. Slip rings and brushes conduct current to the rotor. The rotor poles connect to each other and.

Electric motor. when slip rate decreases sufficiently, the rotor (a smooth cylinder) becomes temporarily magnetized. Its distributed poles make it act like a permanent magnet synchronous motor. The rotor material, like that of a common nail, stays magnetized, but can be demagnetized with little difficulty. Once running, the rotor poles stay in place; they do not drift.Low-power synchronous timing motors (such as those for traditional electric clocks) may have multi-pole permanent magnet external cup rotors, and use shading coils to provide starting torque. "Telechron" clock motors have shaded poles for starting torque, and a two-spoke ring rotor that performs like a discrete.

Electric motor. allows for a smaller electronic converter but the cost of the rotor winding and slip rings may offset the saving in the power electronics components. Difficulties affect controlling speed near synchronous speed limit applications.## Special magnetic motors.## Rotary.## Ironless or coreless rotor motor.The coreless or ironless DC motor is a specialized permanent magnet DC motor. Optimized for rapid acceleration, the rotor is constructed without an iron core. The rotor can take the form of a winding-filled cylinder, or a self-supporting structure comprising only wire and bonding material. The rotor can fit inside the stator magnets; a magnetically soft stationary cylinder.

Electric motor. inside the rotor provides a return path for the stator magnetic flux. A second arrangement has the rotor winding basket surrounding the stator magnets. In that design, the rotor fits inside a magnetically soft cylinder that can serve as the motor housing, and provides a return path for the flux.Because the rotor is much lower mass than a conventional rotor, it can accelerate much more rapidly, often achieving a mechanical time constant under one millisecond. This is especially true if the windings use aluminum rather than (heavier) copper. The rotor has no metal mass to act as a heat sink;.

Electric motor. even small motors must be cooled. Overheating can be an issue for these designs.The vibrating alert of cellular phones can be generated by cylindrical permanent-magnet motors, or disc-shaped types that have a thin multipolar disc field magnet, and an intentionally unbalanced molded-plastic rotor structure with two bonded coreless coils. Metal brushes and a flat commutator switch power to the rotor coils.Related limited-travel actuators have no core and a bonded coil placed between the poles of high-flux thin permanent magnets. These are the fast head positioners for rigid-disk ("hard disk") drives. Although the contemporary design differs considerably from that of loudspeakers,.

Electric motor. it is still loosely (and incorrectly) referred to as a "voice coil" structure, because some earlier rigid-disk-drive heads moved in straight lines, and had a drive structure much like that of a loudspeaker.## Pancake or axial rotor motor.The printed armature or pancake motor has windings shaped as a disc running between arrays of high-flux magnets. The magnets are arranged in a circle facing the rotor spaced to form an axial air gap. This design is commonly known as the pancake motor because of its flat profile.The armature (originally formed on a printed circuit board) is made from punched copper sheets.

Electric motor. with 180 (C), Class H rating.The unique advantage of ironless DC motors is the absence of cogging (torque variations caused by changing attraction between the iron and the magnets). Parasitic eddy currents cannot form in the rotor as it is totally ironless, although iron rotors are laminated. This can greatly improve efficiency, but variable-speed controllers must use a higher switching rate (>40 kHz) or DC because of decreased electromagnetic induction.These motors were invented to drive the capstan(s) of magnetic tape drives, where minimal time to reach operating speed and minimal stopping distance were critical. Pancake motors are widely used in.

Electric motor. high-performance servo-controlled systems, robotic systems, industrial automation and medical devices. Due to the variety of constructions now available, the technology is used in applications from high temperature military to low cost pump and basic servos.Another approach (Magnax) is to use a single stator sandwiched between two rotors. One such design has produced peak power of 15 kW/kg, sustained power around 7.5 kW/kg. This yokeless axial flux motor offers a shorter flux path, keeping the magnets further from the axis. The design allows zero winding overhang; 100 percent of the windings are active. This is enhanced with the use of rectangular-crosssection.

Electric motor. copper wire. The motors can be stacked to work in parallel. Instabilities are minimized by ensuring that the two rotor discs put equal and opposing forces onto the stator disc. The rotors are connected directly to one another via a shaft ring, cancelling out the magnetic forces.Magnax motors range in size from 0.15-5.4 (m) in diameter.## Servo motor.A servo motor is a motor that is used within a position-control or speed-control feedback system. Servomotors are used in applications such as machine tools, pen plotters, and other process systems. Motors intended for use in a servomechanism must have predictable characteristics for.

Electric motor. speed, torque, and power. The speed/torque curve is important and is high ratio for a servo motor. Dynamic response characteristics such as winding inductance and rotor inertia are important; these factors limit performance. Large, powerful, but slow-responding servo loops may use conventional AC or DC motors and drive systems with position or speed feedback. As dynamic response requirements increase, more specialized motor designs such as coreless motors are used. AC motors' superior power density and acceleration characteristics tends to favor permanent magnet synchronous, BLDC, induction, and SRM drive approaches.A servo system differs from some stepper motor applications in that position.

Electric motor. feedback is continuous while the motor is running. A stepper system inherently operates open-loop—relying on the motor not to "miss steps" for short term accuracy—with any feedback such as a "home" switch or position encoder external to the motor system.## Stepper motor.Stepper motors are typically used to provide precise rotations. An internal rotor containing permanent magnets or a magnetically soft rotor with salient poles is controlled by a set of electronically switched external magnets. A stepper motor may also be thought of as a cross between a DC electric motor and a rotary solenoid. As each coil is energized in.

Electric motor. turn, the rotor aligns itself with the magnetic field produced by the energized field winding. Unlike a synchronous motor, the stepper motor may not rotate continuously; instead, it moves in steps—starting and then stopping—advancing from one position to the next as field windings are energized and de-energized in sequence. Depending on the sequence, the rotor may turn forwards or backwards, and it may change direction, stop, speed up or slow down at any time.Simple stepper motor drivers entirely energize or entirely de-energize the field windings, leading the rotor to "cog" to a limited number of positions. Microstepping drivers can proportionally.

Electric motor. made them uncompetitive—thus newer hard disk drives use voice coil-based head actuator systems. (The term "voice coil" in this connection is historic; it refers to the structure in a cone-type loudspeaker.)Stepper motors are often used in computer printers, optical scanners, and digital photocopiers to move the active element, the print head carriage (inkjet printers), and the platen or feed rollers.So-called quartz analog wristwatches contain the smallest commonplace stepping motors; they have one coil, draw little power, and have a permanent magnet rotor. The same kind of motor drives battery-powered quartz clocks. Some of these watches, such as chronographs, contain more.

Electric motor. 1978 era HP 7225A pen plotter used two linear stepper motors to move the pen along the X and Y axes.## Electromagnetism.## Force and torque.An electric motor converts electrical energy to mechanical energy through the force between two opposed magnetic fields. At least one of the two magnetic fields must be created by an electromagnet through the magnetic field caused by an electrical current.The force between a current formula_1 in a conductor of length formula_2 perpendicular to a magnetic field formula_3 may be calculated using the Lorentz force law: formula_4Note: X denotes vector cross product. The most general approaches to.

Electric motor. resistance Ir2 – square of current induced in the rotor s – motor slip; i.e., difference between synchronous speed and slip speed, which provides the relative movement needed for current induction in the rotor.## Back EMF.The movement of armature windings of a direct-current or universal motor through a magnetic field, induce a voltage in them. This voltage tends to oppose the motor supply voltage and so is called "back electromotive force (EMF)". The voltage is proportional to the running speed of the motor. The back EMF of the motor, plus the voltage drop across the winding internal resistance and brushes,.

Electric motor. enacted legislation to encourage the manufacture and use of higher-efficiency motors. Electric motors have efficiencies ranging from at least 15% for shaded pole motors, up to 98% for permanent magnet motors, with efficiency also dependent on load. Peak efficiency is usually at 75% of the rated load. So (as an example) a 10 HP motor is most efficient when driving a load that requires 7.5 HP. Efficiency also depends on motor size; larger motors tend to be more efficient. Some motors can not operate continually for more than a specified period of time (e.g. for more than an hour per.

Electric motor. run)## Goodness factor.Eric Laithwaite proposed a metric to determine the 'goodness' of an electric motor: formula_21Where: formula_22 is the goodness factor (factors above 1 are likely to be efficient) formula_23 are the cross sectional areas of the magnetic and electric circuit formula_24 are the lengths of the magnetic and electric circuits formula_25 is the permeability of the core formula_20 is the angular frequency the motor is driven atFrom this, he showed that the most efficient motors are likely to have relatively large magnetic poles. However, the equation only directly relates to non PM motors.## Performance parameters.## Torque.Electromagnetic motors derive torque.

Electric motor. from the vector product of the interacting fields. Calculating torque requires knowledge of the fields in the air gap. Once these have been established, the torque is the integral of all the force vectors multiplied by the vector's radius. The current flowing in the winding produces the fields. For a motor using a magnetic material the field is not proportional to the current.A figure relating the current to the torque can inform motor selection. The maximum torque for a motor depends on the maximum current, absent thermal considerations.When optimally designed within a given core saturation constraint and for a given.

Electric motor. active current (i.e., torque current), voltage, pole-pair number, excitation frequency (i.e., synchronous speed), and air-gap flux density, all categories of electric motors/generators exhibit virtually the same maximum continuous shaft torque (i.e., operating torque) within a given air-gap area with winding slots and back-iron depth, which determines the physical size of electromagnetic core. Some applications require bursts of torque beyond the maximum, such as bursts to accelerate an electric vehicle from standstill. Always limited by magnetic core saturation or safe operating temperature rise and voltage, the capacity for torque bursts beyond the maximum differs significantly across motor/generator types.Electric machines without a.

Electric motor. transformer circuit topology, such as that of WRSMs or PMSMs, cannot provide torque bursts without saturating the magnetic core. At that point, additional current cannot increase torque. Furthermore, the permanent magnet assembly of PMSMs can be irreparably damaged.Electric machines with a transformer circuit topology, such as induction machines, induction doubly-fed electric machines, and induction or synchronous wound-rotor doubly-fed (WRDF) machines, permit torque bursts because the EMF-induced active current on either side of the transformer oppose each other and thus contribute nothing to the transformer coupled magnetic core flux density, avoiding core saturation.Electric machines that rely on induction or asynchronous principles.

Electric motor. the air-gap area and the back-iron depth, which are determined by the power rating of the armature winding set, the speed of the machine, and the achievable air-gap flux density before core saturation. Despite the high coercivity of neodymium or samarium-cobalt permanent magnets, continuous torque density is virtually the same amongst electric machines with optimally designed armature winding sets. Continuous torque density relates to method of cooling and permissible operation period before destruction by overheating of windings or permanent magnet damage.Other sources state that various e-machine topologies have differing torque density. One source shows the following:where—specific torque density is normalized.

Electric motor. to 1.0 for the surface permanent magnet (SPM)—brushless ac, 180° current conduction.Torque density is approximately four times greater for liquid cooled motors, compared to those which are air cooled.A source comparing direct current, induction motors (IM), PMSM and SRM showed:Another source notes that PMSM up to 1 MW have considerably higher torque density than induction machines.## Continuous power density.The continuous power density is determined by the product of the continuous torque density and the constant torque speed range. Electric motors can achieve densities of up to 20KW/KG, meaning 20 Kilowatts of output power per kilogram.## Acoustic noise and vibrations.Acoustic noise.

Electric motor. and vibrations are usually classified in three sources: mechanical sources (e.g. due to bearings) aerodynamic sources (e.g. due to shaft-mounted fans) magnetic sources (e.g. due to magnetic forces such as Maxwell and magnetostriction forces acting on stator and rotor structures)The latter source, which can be responsible for the "whining noise" of electric motors, is called electromagnetically induced acoustic noise.## Standards.The following are major design, manufacturing, and testing standards covering electric motors: American Petroleum Institute: API 541 Form-Wound Squirrel Cage Induction Motors – 375 kW (500 Horsepower) and Larger American Petroleum Institute: API 546 Brushless Synchronous Machines – 500 kVA and.

Electric motor. 60072 Dimensions and output series for rotating electrical machines National Electrical Manufacturers Association: MG-1 Motors and Generators Underwriters Laboratories: UL 1004 – Standard for Electric Motors Indian Standard: IS:12615-2018 – Line Operated Three Phase a.c. Motors (IE CODE) “Efficiency Classes and Performance Specification” (Third Revision)## Non-magnetic motors.An electrostatic motor is based on the attraction and repulsion of electric charge. Usually, electrostatic motors are the dual of conventional coil-based motors. They typically require a high-voltage power supply, although small motors employ lower voltages. Conventional electric motors instead employ magnetic attraction and repulsion, and require high current at low voltages. In the.

Electric motor. produces acoustic or ultrasonic vibrations to produce linear or rotary motion. In one mechanism, the elongation in a single plane is used to make a series of stretches and position holds, similar to the way a caterpillar moves.An electrically powered spacecraft propulsion system uses electric motor technology to propel spacecraft in outer space. Most systems are based on electrically accelerating propellant to high speed, while some systems are based on electrodynamic tethers principles of propulsion to the magnetosphere. Electric generator Regenerative brake Goodness factor Motor capacitor Traction motor Motor controller Houston, Edwin J.; Kennelly, Arthur, "Recent Types of Dynamo-Electric Machinery",.


Question: What is the source that produces this food?

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Mango. A mango is an edible stone fruit produced by the tropical tree "Mangifera indica". It is believed to have originated in the region between northwestern Myanmar, Bangladesh, and northeastern India. "M. indica" has been cultivated in South and Southeast Asia since ancient times resulting in two types of modern mango cultivars: the "Indian type" and the "Southeast Asian type". Other species in the genus "Mangifera" also produce edible fruits that are also called "mangoes", the majority of which are found in the Malesian ecoregion.Worldwide, there are several hundred cultivars of mango. Depending on the cultivar, mango fruit varies in size,.

Mango. shape, sweetness, skin color, and flesh color which may be pale yellow, gold, green, or orange. Mango is the national fruit of India, Pakistan and the Philippines, while the mango tree is the national tree of Bangladesh.## Etymology.The English word "mango" (plural "mangoes" or "mangos") originated in the 16th century from the Portuguese word, "manga", from the Malay "mangga", and ultimately from the Tamil "man" ("mango tree") + "kay" ("fruit"). The scientific name, "Mangifera indica", refers to a plant bearing mangoes in India.## Description.Mango trees grow to 30 – 40 (m) tall, with a crown radius of 10-15 (m). The.

Mango. while underripe with green peels. Although producing ethylene while ripening, unripened exported mangoes do not have the same juiciness or flavor as fresh fruit.## Etymology.The English word "mango" (plural "mangoes" or "mangos") originated from the Portuguese word, "manga", from the Malay "mangga", probably ultimately from the Tamil "man" ("mango tree") + "kay" ("fruit").## Distribution and habitat.From tropical Asia, mangoes were introduced to East Africa by Arab and Persian traders in the ninth to tenth centuries. The 14th-century Moroccan traveler Ibn Battuta reported it at Mogadishu. It was spread further into other areas around the world during the Colonial Era. The.

Mango. at risk for mango contact dermatitis. Other mango compounds potentially responsible for the dermatitis or allergic reactions include mangiferin. Cross-reactions may occur between mango allergens and urushiol. Sensitized individuals may not be able to safely eat peeled mangos or drink mango juice.When mango trees are flowering in spring, local people with allergies may experience breathing difficulty, itching of the eyes, or facial swelling, even before flower pollen becomes airborne. In this case, the irritant is likely to be the vaporized essential oil from flowers. During the primary ripening season of mangoes, contact with mango plant parts – primarily sap, leaves.

Mango. sitting under a mango tree. Mango blossoms are also used in the worship of the goddess Saraswati. Mango leaves are used to decorate archways and doors in Indian houses and during weddings and celebrations such as Ganesh Chaturthi. Mango motifs and paisleys are widely used in different Indian embroidery styles, and are found in Kashmiri shawls, Kanchipuram and silk sarees. In Tamil Nadu, the mango is referred to as one of the three royal fruits, along with banana and jackfruit, for their sweetness and flavor. This triad of fruits is referred to as "ma-pala-vazhai". The classical Sanskrit poet Kālidāsa sang.


Question: What is the magnitude of the velocity of this animal kilometre per hour?

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Cheetah. in the Sahara, impala in the eastern and southern African woodlands, springbok in the arid savannas to the south and Thomson's gazelle in the Serengeti. Smaller antelopes like the common duiker are a frequent prey in the southern Kalahari. Larger ungulates are typically avoided, though nyala, whose males weigh around 120 (kg), were found to be the major prey in a study in the Phinda Game Reserve. In Namibia cheetahs are the major predators of livestock. The diet of the Asiatic cheetah consists of chinkara, desert hare, goitered gazelle, urial, wild goats and livestock; in India cheetahs used to prey.


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

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Hanauma Bay. the vicinity, the area was not inhabited, although archeologists have found fishing tools and other indications of human presence there. The bay was used as a recreational area by "aliʻi" (Hawaiian nobility), including King Kamehameha and Queen Ka‘ahumanu, who fished, entertained visitors, and sponsored games there. It was also used as a layover and as a navigational lookout point, since the waters between Oʻahu and Molokaʻi are at times difficult.Hanauma Bay was purchased from the Bernice Pauahi Bishop estate by the City and County of Honolulu, and subsequently opened for public use. It was initially a favorite fishing and picnic.


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Abbey of Saint-Georges, Boscherville. The Abbey of Saint-Georges, Boscherville, is a former Benedictine abbey located in the commune of Saint-Martin-de-Boscherville, in Seine-Maritime, France. It was founded in about 1113 on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. Abbaye Saint-Georges.


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

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Pomelo. The pomelo ( ), "Citrus maxima", is the largest citrus fruit from the family Rutaceae and the principal ancestor of the grapefruit. It is a natural, non-hybrid, citrus fruit, native to Southeast Asia. Similar in taste to a sweet grapefruit, the pomelo is commonly consumed and used for festive occasions throughout Southeast Asia. As with the grapefruit, phytochemicals in the pomelo have the potential for drug interactions.## Etymology and common names.According to the Oxford English Dictionary, the etymology of the word "pomelo" is uncertain. It may be derived from Dutch "pompelmoes". Its botanical name, "Citrus maxima", means "the biggest citrus".

Pomelo. tree they grow on and therefore pomelo is typically grown from seed in Asia. Seeds can be stored for 80 days at a temperature of 41 (F) and with moderate relative humidity. "Citrus maxima" is usually grafted onto other citrus rootstocks outside Asia to produce trees that are identical to the parent; high-quality varieties are propagated by air-layering or by budding onto favored rootstocks.The physical and chemical characteristics of pomelo vary widely across South Asia. Dangyuja Banpeiyu## Varieties.## Hybrids.The pomelo is one of the original citrus species from which cultivated citrus fruits have been hybridized, others being citron, mandarin, and.

Pomelo. artificial breeding programs: The common sweet orange (Citrus × sinensis) is a pomelo × mandarin hybrid The bitter orange (Citrus × aurantium) is another pomelo × mandarin hybrid The tangelo is a hybrid between pomelo or grapefruit and any tangerine; it generally has a thicker skin than a tangerine and is less sweet 'K–Early' ('Sunrise Tangelo') 'Minneola tangelo': Bowen grapefruit × Dancy tangerine 'Orlando' (formerly 'Take'): Bowen grapefruit × Dancy tangerine (pollen parent) 'Seminole': Bowen grapefruit × Dancy tangerine 'Thornton': tangerine × grapefruit, unspecified 'Ugli fruit' (Jamaican tangelo): mandarin × grapefruit, probable (wild seedling) Grapefruit is a pomelo backcross: pomelo.

Pomelo. × sweet orange (see above) Forbidden fruit another Caribbean pomelo/sweet orange cross 'Nova': Clementine × Orlando tangelo cross The Oroblanco and Melogold grapefruits are hybrids between "Citrus maxima" and the grapefruit Mandelos: pomelo × mandarin Mato buntan: a variety in Taiwan Hyuganatsu is a pomelo hybrid Kawachi Bankan: ujukitsu x unidentified## Nutrition.Raw pomelo flesh is 89% water, 10% carbohydrates, 1% protein, and contains negligible fat (table). A 100-gram reference amount provides 159 (kJ) of food energy, and is rich in vitamin C (73% of the Daily Value), with no other micronutrients in significant content (table).## Potential for drug interaction.Pomelo may.


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

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Epitheca canis. Epitheca canis, the beaverpond baskettail, is a species of emerald dragonfly in the family Corduliidae. It is found in North America.The IUCN conservation status of "Epitheca canis" is "LC", least concern, with no immediate threat to the species' survival. The population is stable.


Question: What is the weight of a female of this bird in kilogram?

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Coscoroba swan. the South American Classification Committee of the American Ornithological Society, the International Ornithological Committee (IOC), and the Clements taxonomy treat the Cape Barren goose as basal to other geese, which themselves precede the coscoroba and other swans in a linear sequence. Even those three systems differ, with the IOC placing the coscoroba before "Cygnus" and the other two after it in their lists.The coscoroba swan is the only member of genus "Coscoroba" and has no subspecies.## Description.The coscoroba is the smallest swan at 90 to 115 (cm) long with a wingspan of about 155 (cm). Males weigh 3.8 to 5.4.


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30 St Mary Axe. dome, known as the "lens", recalls the iconic glass dome that covered part of the ground floor of the Baltic Exchange and much of which is now displayed at the National Maritime Museum. "The Gherkin" nickname was applied to the current building at least as early as 1999, referring to the plan's highly unorthodox layout and appearance.On 10 April 1992, the Provisional IRA detonated a bomb close to the Baltic Exchange, causing extensive damage to the historic building and neighbouring structures. The United Kingdom government's statutory adviser on the historic environment, English Heritage, and the City of London's governing body,.

30 St Mary Axe. Barclays' former city headquarters in Lombard Street, the idea was that the passer-by in neighbouring streets would be nearly oblivious to the tower's existence until directly underneath it.## Design and construction.The building was constructed by Skanska, completed in December 2003 and opened on 28 April 2004. The primary occupant of the building is Swiss Re, a global reinsurance company, which had the building commissioned as the head office for its UK operation. The tower is thus sometimes known as the Swiss Re Building, although this name has never been official and was never in popular usage anyway, unlike the Gherkin.

30 St Mary Axe. "Johnny Mackintosh and the Spirit of London".In September 2006, the building was put up for sale with a price tag of £600 million. Potential buyers included British Land, Land Securities, Prudential, ING, and the Abu Dhabi royal family. On 21 February 2007, IVG Immobilien AG and UK investment firm Evans Randall completed their joint purchase of the building for £630 million, making it Britain's most expensive office building. Swiss Re made a gain of more than £300 million from the sale. The new owners are seeking compensation from four of their former managers on the deal, in which about £620.


Question: Who/what operates this vehicle?

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Hospital ship. imaging capabilities, such as X-ray, CT-scan and ultrasound. Italian Navy aircraft carrier – Has an on-board hospital with 2 operating rooms, 1 intensive care unit, laboratory, pharmacy and a 32-bed hospital ward. logistic ship – On-board hospital is NATO ROLE-level 2+, with operating room, intensive care unit and a laboratory. Japan Maritime Self-Defense Force – These ships have 2 operating rooms, 2 ICU beds, 35 hospital beds, 1 battle dressing station and several medical imaging (i.e.:X-ray) stations. – These ships have 1 operating room, 1 ICU bed, 8 hospital beds. - These ships have 1 operating room, 2 ICU beds,.


Question: In which year did this animal go extinct?

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Aurochs. Europe to the Holstein interglacial. As indicated by fossil remains in Northern Europe, it reached Denmark and southern Sweden during the Holocene. The aurochs declined during the late Holocene due to habitat loss and hunting, and became extinct when the last individual died in 1627 in Jaktorów forest in Poland.The aurochs is depicted in Paleolithic cave paintings, Neolithic petroglyphs, Ancient Egyptian reliefs and Bronze Age figurines. It symbolised power, sexual potency and prowess in religions of the ancient Near East. Its horns were used in votive offerings, as trophies and drinking horns.Two aurochs domestication events occurred during the Neolithic Revolution.

Aurochs. in 1627 from natural causes.## Behaviour and ecology.Aurochs formed small herds mainly in winter, but lived singly or in smaller groups during the summer. If aurochs had social behaviour similar to their descendants, social status was gained through displays and fights, in which both cows and bulls engaged. With its hypsodont jaw, the aurochs was probably a grazer, with a food selection very similar to domesticated cattle feeding on grass, twigs and acorns.Mating season was in September, and calves were born in spring. The bulls had severe fights, and evidence from the Jaktorów forest shows these could lead to death.


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

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Zürichhorn. Zürichhorn is a river delta on Zürichsee's eastern shore in the lower basin of the lake. The area is part of the parks and quays in the Seefeld quarter of the city of Zürich in Switzerland. The gardens are one of the most popular recreational areas within the city of Zürich.## Geography.Zürichhorn was formed mainly by the "Hornbach" stream, also known as "Wildbach" and "Werenbach", which flows, as of today embedded into a concrete canal, between "Tiefenbrunnen" lido and the landing gate of the Zürichsee-Schifffahrtsgesellschaft (ZSG) into Lake Zürich. Ending the last glacial period when the Linth glacier retreated, the.

Zürichhorn. "Wehrenbach" stream dug over through the Linth glacier's moraine, met the rocky ground, the so-called molasse, and by its attachment the river delta at the Zürichhorn respectively the Seefeld quarter was formed.## Transportation.Zürichhorn can be reached preferably by foot (20 minutes from Bellevue) or by public transportation: Zürich tram routes 2 and 4 and bus line 33 to stops "Höschgasse" or "Fröhlichstrasse", or bus lines 912 and 916 from "Bellevue" to "Chinagarten". During summer season, three Limmat boats provide round trips between Landesmuseum–Wollishofen–Zürichhorn-Landesmuseum on the river Limmat through the city of Zürich respectively Zürichhorn is a stop of the roundtrips.

Zürichhorn. on Lake Zürich provided by Zürichsee-Schifffahrtsgesellschaft (ZSG).## Water airport Zürichhorn.In summer 1910 "Wagenfabrik C. & R. Geissberger" provided first test flights with so-called "Hydroplanes" (flying boats) at Zürichhorn. Initiated by Oskar Bider and Fritz Rihner, in July 1919 the «Schweizerische Gesellschaft für Lufttourismus» was established in Zürich. Tourist flights with flying boats were planned from sites at Zürichhorn, in Geneva, Interlaken/Thun, Locarno, Lugano, Lucerne, Lausanne-Ouchy, Romanshorn and St. Moritz. Switzerland, with its numerous lakes, appeared predestined for the use of seaplanes, so that no expensive airports had to be built. Oskar Bider was killed in an accident before the ambitious.

Zürichhorn. project was realized, but from Zürichhorn respectively (as of 2010) the area of the "Strandbad Tiefenbrunnen" (lido) the Swiss airline Ad Astra Aero operated with seaplanes, among them seven Macchi-Nieuport and five Savoia flying boats and the first large flying boat, Dornier Wal.## Quaianlagen.Hafen Riesbach, meaning Riesbach harbour area is situated between Seefeldquai and Blatterwiese. The harbour itself is as the Enge harbour used as a private-owned marina. In 2004 the old kiosk at the popular open lido at "Riesbachstrasse" was replaced by a polygonal pavilion was designed by the architects Andreas Furrimann and Gabrielle Hächler, and now houses a.

Zürichhorn. small restaurant. As well as the Seefeldquai, it is part of the historical Quaianlagen, and combines park designs from different design periods. The stone pillar "Klausstud" originally stood in the lake and served as a border designation of the medieval right of ban of the city republic of Zürich. At that place also ended the fishing rights of the urban fishermen, and from here the Einsiedeln Abbey pilgrims proved their honour to the Protestantic city by lowering the volume of their prayers and songs. Since the landfills in the construction of the quais, the pillar stands in the middle of.

Zürichhorn. the park. The sculpture by Henry Moore is named "Sheep Peace", and was donated in 1976. The Pavillon Le Corbusier, an art museum dedicated to the work of the Swiss architect Le Corbusier, is situated between Seefeldquai and Blatterwiese. Between Blatterwiese and "Bellerivestrasse", in 1993 the Chinese Garden Zürich was inaugurated.Sights include the spacious parks and quais with various sculptures including Jean Tinguely's "Heureka", "Chinagarten Zürich" at Blatterwiese, and in the northeast the last by Le Corbusier designed building, the formerly named "Heidi-Weber-Museum" respectively Pavillon Le Corbusier. On the southeastern side of the delta is the "Strandbad Tiefenbrunnen" located. The.

Zürichhorn. "Restaurant Fischstube" was built as part of the Swiss national exhibition 1939, it acclaims to be the only house within the city of Zürich with a thatched roof.Among the many major events at Zürichhorn are the "Schweizerische Landesausstellung" 1939 (Swiss national exposition, commonly "Landi39"), "Schweizerische Gartenbauausstellung G59" in 1959, and in 1991 the national research exhibition "Heureka". Since 1989, "Kino am See" (cinema on lake), the largest open-air cinema in Switzerland, will take place between mid-July and mid-August at Zürichhorn on Lake Zürich shore. The lakeside parks are annually frequented by 2.5 million visitors.## History.In 1238 the "Otinbach" stream is.

Zürichhorn. first mentioned, which can be derived from "Otto's stream" respectively Old High German "ôt" meaning heritage. The then used name "Oetenbach" may refer to the river on whose banks an estate, fishing or other rights were situated. About the same time, at Zürichhorn was the Oetenbach Nunnery established, lacking experience on swampy ground; therefore around 1280/85 the Dominican sisters of the convent moved to "Sihlbühl" at Lindenhof hill within the fortifications of the city of Zürich, and also to finance the northern town wall.In the 16/17th century rich Zürich citizens built their country seats outside the town walls of the.

Zürichhorn. city of Zürich on lakeshore in the Seefeld quarter. In the 1840s several construction companies settled around Zürichhorn: Raw material was delivered on the lake respectively shore-based on (as of today) "Fröhlichstrasse". The then "Hornegg" was developed until the end of the 19th century as the local center of construction and ship building companies. In 1894 the railway line "Rechtsufrige Zürichseebahn" was established, since then most of the companies moved to the more attractive Industriequartier in the western parts of the city of Zürich.1879/81 the "Wildbach" has been corrected to avoid recurrent floodings of the former municipality of Riesbach (as.

Zürichhorn. of today Zürich's district number 8). The stream was discharged to the south of Lake Zürich, and from then, it was called "Hornbach" nearby its mouth. Opening the Lake Zürich quais, in 1887 the park area was expanded from "Seefeld-Quai" to Zürichhorn, in order to promote "companionship, recreation and amusement". A spacious park landscape was built by the landscape architects Otto Froebel and Evariste Mertens.## Cultural heritage of national importance.Zürichhorn is listed in the Swiss inventory of cultural property of national and regional significance as a "Class A" object of national importance.


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Fontaines de la Concorde. The Fontaines de la Concorde are two monumental fountains located in the Place de la Concorde in the center of Paris. They were designed by Jacques Ignace Hittorff, and completed in 1840 during the reign of King Louis-Philippe. The south fountain commemorates the maritime commerce and industry of France, and the north fountain commemorates navigation and commerce on the rivers of France.## History.Before the French Revolution, during the period 1753–1772, when the square was called Place Louis XV, the architect Jacques-Ange Gabriel designed a plan for a monumental statue of Louis XV with two fountains, but because of a lack.

Fontaines de la Concorde. the Memory of King Louis XVI.The completion of the Canal de l'Ourcq in 1824, bringing water from outside the city to the Center of Paris, made it possible to build new fountains in the Place de la Concorde. In 1829, during the rule of King Charles X, the city sponsored a competition for a new plan for the square, which was to include no less than four fountains. One of the entrants in the competition was Jacques Ignace Hittorff, a German by birth, who had previously designed decorations for festivals, funerals, and the 1825 coronation of Charles X. The plan.

Fontaines de la Concorde. of Hittorff featured four fountains in four quadrants surrounding an equestrian statue of Louis XVI. His plan was not selected.After the 1830 July Revolution, the new King, Louis-Philippe, renamed the square Place de la Concorde and rejected the earlier project for the Place. In 1831, when the viceroy of Egypt, Mohammed Ali, gave the King the gift of an obelisk dating from the time of Ramses II from Luxor, Louis-Philippe selected Hittorff to design a setting for the obelisk in time for the 1833 July festival, intended to commemorate the anniversary of his rule. Shortly afterwards Louis-Philippe gave him a.

Fontaines de la Concorde. commission to redesign the entire square.Hittorff worked on the design for the square and for four fountains from 1833 to 1840, consulting closely with Claude Philibert Barthelot Rambuteau, the Prefect of the Seine. The principal influence on his fountain designs were the twin fountains in Piazza San Pietro in Rome, which also are placed on either side on an obelisk, and which Hittdorff had seen on a visit to Rome in the 1820s. Another influence was Piazza Navona in Rome, where two fountains were placed on either side of an obelisk. Like the fountains of Piazza Navona, the Fontaines de.

Fontaines de la Concorde. la Concorde were placed on an axis that connected the Church of the Madeleine and the Rue Royale to the north and the bridge to the Palais Bourbon to the south.Twelve different sculptors worked on the statuary of the fountains, closely supervised by Hittorff, who made sure that the entire ensemble would be harmonious and balanced.A prominent feature of the design of both fountains was a mushroom-shaped cap above the central vasque. Water was to jet from the top of the cap and then cascade downward into a circular vasque, then down into a large circular basin below. The major.

Fontaines de la Concorde. Sculptors.The sculptors who worked on the fountain were:Auguste-Hyacinthe Debay (The Atlantic and the Mediterranean)Antoine Desboeufs (Coral and Fish)Achille-Joseph-Étienne Valois (Shells and Pearls)Isidore-Hippolyte Brion (Maritime navigation, Astronomy and Commerce)Jean-François-Théodore Gechter (The Rhône and the Rhine)François-Gaspard Lanno (Flowers and Fruit)Honoré-Jean Husson (Wheat and Grapes)Jean-Jacques Feuchère (River Navigation, Industry and Agriculture)Jean-Jacques Elshoecht, Louis-Parfait Merlieux, Antonin-Marie Moine (tritons and neriads).## Symbolism.The Maritime Fountain, to the south, closer to the River Seine, represents the maritime spirit of France. Large semi-nude figures supporting the vasque represent the Mediterranean Sea and the Atlantic Ocean. Other figures beneath the vasque represent the industries of the sea; coral, fish,.

Fontaines de la Concorde. the Rhine River. The other major figures represent the main harvests of France; Wheat and Grapes, Flowers and Fruit.The figures above the vasque who support the cap represent the spirits of River Navigation, Agriculture and Industry.## Water supply and the fountain design.Water for the fountains was supplied by the canal de l'Ourcq, begun by Napoleon at the beginning of his reign. The original fountains had no pumps and operated by gravity- water flowed from the basin at La Villette, where the water of the canal arrived in Paris, at a higher elevation than the Place de la Concorde. The overflow.

Fontaines de la Concorde. water went into the Seine. Beginning in 1840, 6,000 cubic meters of water per day from La Villette were set aside for the Fontaines de la Concorde.The fountains were carefully designed so that a sheet of water flowed evenly from the rim of the vasque, even if the wind was strong and the water supply was uneven. A small channel hidden just inside the rim of the vasque moderates the flow of water.In the 20th century, the gravity system was replaced with pumps, which recycle the water.Marilyn Symmes (editor), "Fountains - Splash and Spectacle - Water and Design from the.


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Prumnopitys ferruginea. Prumnopitys ferruginea, commonly called miro, is an evergreen coniferous tree which is endemic to New Zealand. Before the genus "Prumnopitys" was distinguished, it was treated in the related genus "Podocarpus" as "Podocarpus ferrugineus".It grows up to 25 m high, with a trunk up to 1.3 m diameter. The leaves are linear to sickle-shaped, 15–25 mm long and 2–3 mm broad, with downcurved margins. The plants are dioecious with pollen cones being solitary while those of female plants hang from a curved, scaly stalk. The seed cones are highly modified, reduced to a central stem 2–3 cm long bearing 1-3 scales,.


Question: In which year was this vehicle invented or discovered?

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Steam locomotive. another trio of locomotives, concluding with the "Catch Me Who Can" in 1808.In 1812, Matthew Murray's successful twin-cylinder rack locomotive "Salamanca" first ran on the edge-railed rack-and-pinion Middleton Railway. Another well-known early locomotive was "Puffing Billy", built 1813–14 by engineer William Hedley. It was intended to work on the Wylam Colliery near Newcastle upon Tyne. This locomotive is the oldest preserved, and is on static display at the Science Museum, London.## George Stephenson.George Stephenson, a former miner working as an engine-wright at Killingworth Colliery, developed up to sixteen Killingworth locomotives, including "Blücher" in 1814, another in 1815, and a (newly.


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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Red panda. dense bamboo cover close to water sources. It is solitary and largely arboreal. It feeds mainly on bamboo shoots and leaves, but also on fruits and blossoms. Red pandas mate in early spring, with the females giving birth to litters of up to four cubs in summer. It is threatened by poaching as well as destruction and fragmentation of habitat due to deforestation. The species has been listed as Endangered on the IUCN Red List since 2015. It is protected in all range countries.Community-based conservation programmes have been initiated in Nepal, Bhutan and northeastern India; in China, it benefits from.

Red panda. 2017 revealed only one in Yunnan offered hats made of red panda skins, and red panda tails were offered in an online forum.## Conservation.The red panda is listed in CITES Appendix I and protected in all range countries; hunting is illegal. It has been listed as Endangered on the IUCN Red List since 2008 because the global population is estimated at 10,000 individuals, with a decreasing population trend. A large extent of its habitat is part of protected areas.A red panda anti-poaching unit and community-based monitoring have been established in Langtang National Park. Members of Community Forest User Groups also.

Red panda. sent to other zoos; by 1969, about 250 red pandas had been exhibited in zoos. The Taronga Conservation Society started keeping red pandas in 1977.In 1978, a breed registry, the "International Red Panda Studbook", was set up, followed by the Red Panda European Endangered Species Programme in 1985. Members of international zoos ratified a global master plan for the captive breeding of the red panda in 1993. By late 2015, 219 red pandas lived in 42 zoos in Japan. The Padmaja Naidu Himalayan Zoological Park participates in the Red Panda Species Survival Plan and kept about 25 red pandas by.


Question: What country does this village belong to?

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Nelahozeves. Nelahozeves is a municipality and village in Mělník District in the Central Bohemian Region of the Czech Republic. It has about 2,200 inhabitants.## Administrative parts.Villages of Hleďsebe 1.díl, Hleďsebe 2.díl, Lešany and Podhořany are administrative parts of Nelahozeves.## Geography.Nelahozeves lies on the left bank of the Vltava River, about 19 (km) north of Prague.## History.The first written mention of Nelahozeves is from 1352, when the Church of Saint Andrew already existed.## Sights.The village has a three-winged Renaissance chateau in the Italianate Northern Mannerist style, featuring elaborate sgraffito designs that depict scenes from Greek mythology and the Old Testament. The castle.

Nelahozeves. adviser to Emperor Ferdinand I, who commissioned the building from royal master builder Bonifaz Wolmut. The castle took more than sixty years to build and was completed at the beginning of the 17th century, more than a decade after Florian's death. However, financial difficulties forced the von Griesbach family to sell the castle to Polyxena, 1st Princess Lobkowicz (1566–1642), in 1623. The castle was severely damaged during the Thirty Years' War, but was reconstructed by Václav Eusebius, 2nd Prince Lobkowicz (1609–1677), who used the castle as the center for administration and management of his estates. However, the castle never served.

Nelahozeves. as the Lobkowicz family's primary residence. In the late 19th and early 20th centuries, it was home to the Order of the Sisters of God's Love, a religious institution for widowed or unmarried noblewomen founded by Princess Wilhelmina Lobkowicz (1863–1945). Nelahozeves Castle was confiscated by the Communist government in 1948, and housed an exhibition of modern socialist art run by the Czech Regional Gallery in the 1970s and 80s. It was returned to the Lobkowicz family in 1993, and now features an exhibition of historical period rooms, demonstrating the lifestyle of a Bohemian noble family in the mid-19th century. The.

Nelahozeves. castle also houses part of the Lobkowicz collection of paintings.## Notable people.The 19th-century composer Antonín Dvořák was born in Nelahozeves in 1841, and lived there until the age of 13. In his childhood home, also owned by the Lobkowicz family, the National Museum operates a small museum focusing on his life.Nelahozeves Castle.


Question: What is the length of the wingspan in centimetre of this bird?

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Common kingfisher. shape. The adult male of the western European subspecies, "A. a. ispida" has green-blue upperparts with pale azure-blue back and rump, a rufous patch by the bill base, and a rufous ear-patch. It has a green-blue neck stripe, white neck blaze and throat, rufous underparts, and a black bill with some red at the base. The legs and feet are bright red. It is about 16 (cm) long with a wingspan of 25 (cm), and weighs 34 - 46 (g). The female is identical in appearance to the male except that her lower mandible is orange-red with a black tip.

Common kingfisher. two eggs in most clutches fail to hatch because the parent cannot cover them. Both sexes incubate by day, but only the female incubates at night. An incubating bird sits trance-like, facing the tunnel; it invariably casts a pellet, breaking it up with the bill. The eggs hatch in 19–20 days, and the altricial young are in the nest for a further 24–25 days, often more. Once large enough, young birds will come to the burrow entrance to be fed. Two broods, sometimes three, may be reared in a season.## Survival.The early days for fledged juveniles are more hazardous; during.

Common kingfisher. as it searches for prey. It bobs its head when food is detected to gauge the distance and plunges steeply down to seize its prey usually no deeper than 25 (cm) below the surface. The wings are opened underwater and the open eyes are protected by the transparent third eyelid. The bird rises beak-first from the surface and flies back to its perch. At the perch the fish is adjusted until it is held near its tail and beaten against the perch several times. Once dead, the fish is positioned lengthways and swallowed head-first. A few times each day, a.

Common kingfisher. intake was 73.5 kJ per chick (i.e., 1837 kJ per 25 days of the fledging period).A challenge for any diving bird is the change in refraction between air and water. The eyes of many birds have two foveae (the fovea is the area of the retina with the greatest density of light receptors), and a kingfisher can switch from the main central fovea to the auxiliary fovea when it enters water; a retinal streak of high receptor density which connects the two foveae allows the image to swing temporally as the bird drops onto the prey. The egg-shaped lens of.


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

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Orchid. or in the septa of the ovary, the most typical position amongst the Asparagales.In orchids that produce pollinia, pollination happens as some variant of the following sequence: when the pollinator enters into the flower, it touches a viscidium, which promptly sticks to its body, generally on the head or abdomen. While leaving the flower, it pulls the pollinium out of the anther, as it is connected to the viscidium by the caudicle or stipe. The caudicle then bends and the pollinium is moved forwards and downwards. When the pollinator enters another flower of the same species, the pollinium has taken.

Orchid. at several ranks to be recognized. The Orchidaceae is currently placed in the order Asparagales by the APG III system of 2009.Five subfamilies are recognised. The cladogram below was made according to the APG system of 1998. It represents the view that most botanists had held up to that time. It was supported by morphological studies, but never received strong support in molecular phylogenetic studies.In 2015, a phylogenetic study showed strong statistical support for the following topology of the orchid tree, using 9 kb of plastid and nuclear DNA from 7 genes, a topology that was confirmed by a phylogenomic.


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

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Mammillaria plumosa. Mammillaria plumosa, the feather cactus, is a species of flowering plant in the family Cactaceae, native to Northeastern Mexico.It grows to 12 (cm) tall by 40 (cm) broad. The clustering spherical stems, 7 (cm) in diameter, are completely covered in white downy spines. White or greenish yellow flowers are borne in late summer.Its status is listed as “Near Threatened” by the IUCN Red List. ## Cultivation."Mammillaria plumosa" is one of several "Mammillaria" species to be cultivated. In temperate regions it must be grown under glass with heat. It has gained the Royal Horticultural Society's Award of Garden Merit.


Question: What is the location of this island?

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Confederation Bridge. voted unanimously in favour of renaming the bridge to "Epekwitk Crossing", whereas Epekwitk ( ) is the traditional Mi'kmaq name for Prince Edward Island. The name change would need to be approved by the Canadian federal government in order to take effect.## Structure.The bridge is a two-lane toll bridge that carries the Trans-Canada Highway between Borden-Carleton, Prince Edward Island (at Route 1) and Cape Jourimain, New Brunswick (at Route 16).It is a multi-span balanced cantilever bridge with a post-tensioned concrete box girder structure. Most of the curved bridge is 40 (m) above water with a 60 (m) navigation span for.

Confederation Bridge. act as wind barriers, placing bridge deck and navigational lighting, constructing the Borden-Carleton toll plaza, and finishing the New Brunswick and Prince Edward Island approach roads. In separate construction, the federal and provincial governments built a new commercial and tourist development on the abandoned CN rail yards in Borden-Carleton, with phase I of this facility opening in spring 1997 as "Gateway Village". New Brunswick has never received similar federal support to improve the economy of Cape Tormentine, which has become a shadow of its former role in PEI transportation history, although in recent years a new eco-tourist and visitor centre.


Question: What is the street address of this building?

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Schaloen Castle. Schaloen Castle is a castle in Oud-Valkenburg in the South Limburg municipality of Valkenburg aan de Geul in The Netherlands. The castle is a national monument . Together with the Johannes de Doperkerk and Genhoes, it is part of the protected face of Oud Valkenburg. It is also part of the Buitengoed Geul & Maas. ## Location.The castle is located in the meadow of the river Geul near the village of Oud-Valkenburg. The canal around the house is fed with water from the Molenbeek, a Geul branch that formed the main branch of the Geul in the 16th century. The.

Schaloen Castle. castle is located north of the Oud-Valkenburgerweg, the through road from Valkenburg to Schin op Geul.At the end of a driveway, one arrives at a watermill and then, through a gatehouse, on a square where the castle and forecourt are located. The marlstone Schaloensmolen from 1699 was originally a ban mill, but nowadays only serves as a demonstration mill. In the castle garden, the local IVN association has created a Limburg botanical garden, which is open to the public.## Building history.The rectangular castle is built of marl and originally dates from the 12th century. Then it was a bit smaller.

Schaloen Castle. and 1457 the castle was owned by his son Reinier IV van Hulsberg van Schaloen called Sjaloen, according to the archives in Maastricht and Tongeren . His son Librecht van Hulsberg was his successor and after his death in 1530 his brother Johan van Hulsberg was well served. His sonReinier V van Hulsberg van Schaloen became the next lord of the castle. This was succeeded by his brother Gerard van Hulsberg , who acquired the rights to the manor of Oud-Valkenburg in 1605 . The family lived at Huys de Dohm in Welten. During the Spanish-Dutch war in the sixteenth.


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

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Calamagrostis purpurascens. Calamagrostis purpurascens, is a perennial grass commonly known as purple reedgrass, purple pinegrass, or alpine reedgrass. It grows 30 to 80 (cm) tall.## Description."Calamagrostis purpurascens" is a large, clump forming, perennial grass; growing 30-80 cm (12-31 in.) tall. It grows from short rhizomes and has dense, often purpled tinted flower heads that are 4 to 13 cm (1.6 to 5.1 in.) long. It has one flowered spikelets, two subequal glumes, and lemma with a dorsal awn. The awn is longer than the glum and sharply bent, and longer than the tip of the spiklet. Flowering stems have typically one or.

Calamagrostis purpurascens. two leaves.## Distribution."Calamagrostis purpurascens" is native from arctic Greenland, to much of Canada (Alberta, British Columbia, Manitoba, Newfoundland, Northwest Territories, Nunavut, Ontario, Quebec, Saskatchewan, and Yukon Territory) and the western and northern U.S. (Alaska, California, Colorado, Idaho, Minnesota, Montana, Nevada, New Mexico, Oregon, South Dakota, Utah, Washington, and Wyoming). It is rare and scattered in the southern U.S. states, such as Louisiana, where it is a post-glacial relict.Further south, "C. purpurascens" is also known in Chile, where it was recorded by Rodolfo Amando Philippi in 1860. Philippi gave it the name "Deyeuxia robusta", now relegated to synonymy.It is also found.

Calamagrostis purpurascens. in Asia (in eastern Siberia).## Habitat."Calamagrostis purpurascens" grows in dry mountainous zones, from high up on the foothills to close to the snow-line, often taking root in gaps in the talus, where few other plants can grow. It is an arctic-alpine species with disjunct boreal populations in eastern North America. In Minnesota it is an endangered species found growing in the north eastern part of the state in the coniferous region in Cook county where it is found on tall north facing cliffs composed of slate and diabase; these locations are cool, moist, and lack heavy competition from other plant.

Calamagrostis purpurascens. species.## Ecology."Carterocephalus palaemon" (arctic skipper) butterflies eat the nectar from "C. purpurascens" flowers, and their caterpillars feed on the shoots. "Ovis canadensis" (bighorn sheep) are known to graze this grass.


Question: In which year did this animal go extinct?

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Aurochs. Europe to the Holstein interglacial. As indicated by fossil remains in Northern Europe, it reached Denmark and southern Sweden during the Holocene. The aurochs declined during the late Holocene due to habitat loss and hunting, and became extinct when the last individual died in 1627 in Jaktorów forest in Poland.The aurochs is depicted in Paleolithic cave paintings, Neolithic petroglyphs, Ancient Egyptian reliefs and Bronze Age figurines. It symbolised power, sexual potency and prowess in religions of the ancient Near East. Its horns were used in votive offerings, as trophies and drinking horns.Two aurochs domestication events occurred during the Neolithic Revolution.

Aurochs. in 1627 from natural causes.## Behaviour and ecology.Aurochs formed small herds mainly in winter, but lived singly or in smaller groups during the summer. If aurochs had social behaviour similar to their descendants, social status was gained through displays and fights, in which both cows and bulls engaged. With its hypsodont jaw, the aurochs was probably a grazer, with a food selection very similar to domesticated cattle feeding on grass, twigs and acorns.Mating season was in September, and calves were born in spring. The bulls had severe fights, and evidence from the Jaktorów forest shows these could lead to death.


Question: What country does this building belong to?

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Château de Hautefort. The Château de Hautefort is a French château and gardens located in the town of Hautefort in the Dordogne. The castle was originally a medieval fortress that was reconstructed in the 17th century, and embellished with a jardin à la française. In 1853 the landscape architect redesigned the gardens, adding a landscape garden, geometric flower gardens, topiary gardens imitating the domes of the château, and a long tunnel of greenery. Next to the formal gardens is a hill with an Italian garden with winding shaded paths. Notable trees in the park include a "Magnolia grandiflora" and a Cedar of Lebanon.

Château de Hautefort. The gardens are listed by the Committee of Parks and Gardens of the Ministry of Culture of France as one of the Notable Gardens of France.## In popular culture.The Château de Hautefort features in two films: "Eye of the Devil", a 1966 British mystery/horror film with supernatural and occult themes, where the château (named Château Bellenac in the film) features extensively. Directed by J. Lee Thompson, the film has many top stars of the era including Deborah Kerr, David Niven, Flora Robson, Donald Pleasence, David Hemmings, Kim Novak (briefly), and a young Sharon Tate. "Ever After", a 1998 romantic drama.

Château de Hautefort. inspired by the "Cinderella" tale, with the château portraying the character Prince Henry's castle; many scenes were shot in and around the Dordogne. The film stars Drew Barrymore, Anjelica Huston, Dougray Scott and Jeanne Moreau. http://www.chateau-hautefort.com Official Site Visiting information (See pictures and description on the site of the Committee of Parks and Gardens of France).


Question: Which location has this plant invaded?

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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. 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. 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. 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. 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. 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. 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. 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.