(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.
Pull
Definition:
(v. t.) To draw, or attempt to draw, toward one; to draw forcibly.
(v. t.) To draw apart; to tear; to rend.
(v. t.) To gather with the hand, or by drawing toward one; to pluck; as, to pull fruit; to pull flax; to pull a finch.
(v. t.) To move or operate by the motion of drawing towards one; as, to pull a bell; to pull an oar.
(v. t.) To hold back, and so prevent from winning; as, the favorite was pulled.
(v. t.) To take or make, as a proof or impression; -- hand presses being worked by pulling a lever.
(v. t.) To strike the ball in a particular manner. See Pull, n., 8.
(v. i.) To exert one's self in an act or motion of drawing or hauling; to tug; as, to pull at a rope.
(n.) The act of pulling or drawing with force; an effort to move something by drawing toward one.
(n.) A contest; a struggle; as, a wrestling pull.
(n.) A pluck; loss or violence suffered.
(n.) A knob, handle, or lever, etc., by which anything is pulled; as, a drawer pull; a bell pull.
(n.) The act of rowing; as, a pull on the river.
(n.) The act of drinking; as, to take a pull at the beer, or the mug.
(n.) Something in one's favor in a comparison or a contest; an advantage; means of influencing; as, in weights the favorite had the pull.
(n.) A kind of stroke by which a leg ball is sent to the off side, or an off ball to the side.
Example Sentences:
(1) "I pulled the microphone in front of my seat, not a knife.
(2) Critics say he is unelectable as prime minister and will never be able to implement his plans, but he has nonetheless pulled attention back to an issue that many thought had gone away for good.
(3) It pulled to a halt and a bodyguard got out and knocked me unconscious.
(4) The visitors did have a chance to pull another back with three minutes remaining but Henry blazed a free-kick from within range on the left over the bar, summing up Wolves’ day out in the East Midlands.
(5) Nango's dwellings are built on skis so can be pulled around the beach, and have a glass roof to view the northern lights.
(6) The effect of 5 beta- and 5 alpha-reduced progestins on luteinizing hormone-releasing hormone (LH-RH) release was examined using either an in vitro superfusion or an in vivo push-pull perfusion (PPP) technique.
(7) The person responsible for pulling the trigger was equally likely to be a friend, a family member, or the victim.
(8) The cull in 2013 required a policing effort costing millions of pounds and pulling in officers from many different forces.
(9) Asymmetries occur less often whilst using the low-cervical-pull according to Sander, due to the reduced friction between the two plastic parts of this headgear system.
(10) Harvest the bulbs once they reach 7-8cm across; if you cut them off at ground level rather than pulling the whole plant up, the roots should produce a second crop of feathery shoots.
(11) Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth.
(12) All the others, all that bullshit, they just want to pull me down from the top but I will not go.
(13) Even the landscape is secretive: vast tracts of crown land and hidden valleys with nothing but a dead end road and lonely farmhouse, with a tractor and trailer pulled across the farmyard for protection.
(14) A Zliten hospital spokesman told Associated Press that 60 bodies had been pulled from the wreckage, though Fozi Awnais, from the health ministry in Tripoli, later said 47 people had died and 118 more were injured.
(15) "The rise in those who are self-employed is good news, but the reality is that those who have turned to freelance work in order to pull themselves out of unemployment and those who have decided to work for themselves face a challenging tax maze that could land them in hot water should they get it wrong," says Chas Roy-Chowdhury, head of taxation at the Association of Certified Chartered Accountants.
(16) Last week, Cohen estimated the militants were still earning “several million dollars per week from the sale of stolen and smuggled energy resources” – down on what they pulled in before the coalition air strikes, but still a substantial amount.
(17) The comedian Daniel O’Reilly, who gives laddish advice on how to “pull birds” under the guise of a deliberately provocative character in the ITV2 series, has proved controversial for lines such as “Just show her your penis.
(18) The second national multiplex was handed to 4 Digital, but was handed back after Channel 4 pulled out.
(19) AJ Green was waiting just behind him, and the receiver gratefully pulled in the softly fluttering ball.
(20) By simultaneously pushing the foot bar and pulling the hand bar, the monkey lifts a weight and triggers a microswitch which releases a banana-flavored food pellet into a well close to the animal's mouth.