(n.) A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied; -- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.
(n.) A bar, as a capstan bar, applied to a rotatory piece to turn it.
(n.) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.
Example Sentences:
(1) In this experiment animals were trained to lever press in two distinctive contexts.
(2) Orientation and lever responding were not functionally related.
(3) In older stages, the cervical joints rotate according to geometric and lever arm principles.
(4) In EastEnders , the mystery surrounding the identity of Kat's secret squeeze continues amid the grinding of narrative levers and the death rattle of overflogged script-horses.
(5) Cats were trained to press a lever for 0.5--1.0 ml of milk reward both in the presence and absence of ambient light.
(6) Setting out how Britain would have a lever over the rest of the EU to demand repatriation of UK competences, Cameron said: "What's happening in Europe right now is massive change being driven by the existence of the euro.
(7) When lever pressing was established, the 2-kHz signal was presented through a speaker adjacent to the response lever according to a different set of variable intertrial intervals.
(8) Officials said the changes to the planning rules will mean it is possible to lever in billions of private sector development in low-cost housing.
(9) Rats were allowed to bar press on either of two levers (left and right).
(10) Knee flexion is synchronized with ankle dorsiflexion by a synchronizer rod and lever.
(11) In order to study the interactions between serotonergic mechanism and electrical stimulation of the mesencephalic central gray substance, rats were trained to lever-press for terminating aversive electric stimuli applied at the Periaqueductal gray and adjoining tectum of the mesencephalon.
(12) Rats were trained to press a lever to obtain a brief burst of pulses to the lateral hypothalamus.
(13) But its original meaning is the practice of using the levers of the state and of government to get difficult things done that otherwise wouldn't happen.
(14) Intact rats and rats bearing lesions of the suprachiasmatic nuclei (SCNX rats) were trained to obtain food by pressing either of two levers located on opposite sides of a cylindrical cage.
(15) We found that attenuation of lever-pressing and water intake by raclopride were not more separated in dose than after, for example, haloperidol.
(16) Young rats weaned at 16 days were taught to press a lever by shaping at 18 days and trained for 11 days (from 20 to 30 days of age) on a fixed-interval 60-sec schedule, at a rate of 5 half-hour sessions per day.
(17) In contrast, the selective norepinephrine uptake inhibitors, desipramine and talsupram, and the selective serotonin uptake inhibitor, citalopram, occasioned averages of only 13 to 19% drug-lever responding.
(18) When reinforcement was not available, each lever response produced a 0.5-sec green light on the key.
(19) Rats implanted with placebo pellets and given access to morphine reestablished lever pressing, while those given access to isotonic saline extinguished their lever pressing.
(20) Levels of acetylcholine were significantly elevated in the telencephalon and diencephalon + mesencephalon of rats killed by near-freezing during conditioned suppression of food-reinforced lever pressing, whereas levels of serotonin, dopamine, and norepinephrine were not altered.
Winch
Definition:
(v. i.) To wince; to shrink; to kick with impatience or uneasiness.
(n.) A kick, as of a beast, from impatience or uneasiness.
(n.) A crank with a handle, for giving motion to a machine, a grindstone, etc.
(n.) An instrument with which to turn or strain something forcibly.
(n.) An axle or drum turned by a crank with a handle, or by power, for raising weights, as from the hold of a ship, from mines, etc.; a windlass.
(n.) A wince.
Example Sentences:
(1) We see people who are grossly fat, their wobbling, sad bodies being winched out of windows, and class that as "obesity", distancing ourselves from the term.
(2) Because of the centrally placed winch and simple design, it withstands strong pulling and is very reliable.
(3) The $2.5bn (£1.6bn) trundling science lab began its mission on Mars after a dramatic arrival last month in which the rover was winched to the surface from a spacecraft hovering overhead on rocket thrusters.
(4) The Dp was measured at 1.40 m.s-1, using a mechanical winch and a strain gauge with a load cell connected to a strain bridge.
(5) As their hot blood pours in torrents into the sea, the defenceless whales are finished off by winching them up by the tail to force their massive heads beneath the surface and electrocuting them as they thrash and drown in panicked desperation.
(6) With more than 50,000 supporters remaining commendably calm, engineers eventually arrived and were winched up to re-attach the screen.
(7) "We'll black it out, drop Barry the dummy down, and they can practise winching and rescue."
(8) Once full, the bags will be winched by helicopters and flown down the mountain.
(9) The Aylesbury itself is one of London's largest estates and its long construction throughout the 1960s and 70s was overseen by architects Derek Winch and Hans Peter Trenton of Southwark council.
(10) Shrimp boat winch injury to the upper extremity was identified in three patients.
(11) On Monday, the bodies were winched to the top of the 550ft (168 metre) cliffs, as detectives broke into a silver Volkswagen people carrier found in a nearby car park that was believed to have belonged to the group.
(12) But this was to be expected – the first stage of tightening the dozens of winches around the vessel and starting to ease it off the rocks was always expected to be the most delicate.
(13) Charlie Winch, a third-year international relations student, says: "This small group of occupiers risk widening the already growing divide between the university and its students.
(14) As a consequence of inaccessible accident sites in the mountains, 23% of the rescues had to be performed by winch.
(15) In October a terminally ill woman was left stranded in the hydraulic lift that was to winch her onto a Ryanair flight which took off without her, and in 2011 a person with multiple sclerosis successfully sued the same airline after the lift failed to arrive and she had to be hauled up the aircraft steps over her husband’s shoulder.
(16) The pirate boat, Coopepes 20, is a rusting 60ft fishing vessel, its longline winch clear on the rear deck, alongside a barrel brimming with shining hooks.
(17) "The oil industry is moving away from helicopters for in-field operations because of safety concerns and, in any case, being winched on to the top of a 100m turbine in a gale is not an attractive proposition."
(18) The results were discussed in terms of their implications for Winch's theory of complementary needs and for past and future investigation of need compatibility.
(19) Swiss Air Rescue (REGA) teams execute more than 3000 aeromedical missions annually, of which some require the use of a winch.
(20) His green shirt balloons round his body, baggy slacks winched up high.