Search results
Results from the WOW.Com Content Network
Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces.
Transrapid 09 at the Emsland test facility in Lower Saxony, Germany A full trip on the Shanghai Transrapid maglev train Example of low-speed urban maglev system, Linimo. Maglev (derived from magnetic levitation) is a system of rail transport whose rolling stock is levitated by electromagnets rather than rolled on wheels, eliminating rolling resistance.
Some species may only be able to detect north and south, while others may only be able to differentiate between the equator and the poles. Although the ability to sense direction is important in migratory navigation, many animals have the ability to sense small fluctuations in earth's magnetic field to map their position to within a few kilometers.
The African clawed frog or platanna, Xenopus laevis, was first widely used in laboratories in pregnancy assays in the first half of the 20th century.When human chorionic gonadotropin, a hormone found in substantial quantities in the urine of pregnant women, is injected into a female X. laevis, it induces them to lay eggs.
This is China's second maglev line, after Shanghai Maglev, and the first domestically built maglev line, which uses indigenous technology. [5] The line stretches over 18.55 kilometers (11.53 mi) and runs between Changsha Huanghua International Airport, Langli station and the high-speed railway station Changsha South railway station. [6]
The first location is on top of the Monte Iberia tableland where the frog was discovered. The second is smaller (less than 100 km 2 ) and sparsely occupied, near Nibujón at sea level. This latter area has suffered great disturbances over the past 40 years from human activities.
The tomato frog breeds in shallow pools, swamps and areas of slow-moving water. These frogs are found from sea level to elevations of around 200 metres. [ 5 ] Its natural habitats are subtropical or tropical moist lowland forests , rivers , swamps , freshwater marshes , intermittent freshwater marshes, arable land , plantations , rural gardens ...
The Shanghai maglev is the world's first commercial high-speed maglev and has a maximum cruising speed of 300 km/h (186 mph). [3] Prior to May 2021 the cruising speed was 431 km/h (268 mph), at the time this made it the fastest train service in commercial operation.