(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.
Vise
Definition:
(n.) An instrument consisting of two jaws, closing by a screw, lever, cam, or the like, for holding work, as in filing.
(n.) An indorsement made on a passport by the proper authorities of certain countries on the continent of Europe, denoting that it has been examined, and that the person who bears it is permitted to proceed on his journey; a visa.
(v. t.) To examine and indorse, as a passport; to visa.
Example Sentences:
(1) For rapid and fairly consistent splitting, a vise to the jaws of which triangular metal files have been welded has been found useful.
(2) In addition, most patients exhibited a marked shift from abnormal to normal platelet aggregation or vise-versa within a short time period.
(3) These results could not be interpreted on the basis of shift of 5 monodeiodinase to 5' form or vise versa, and imply that the two deionative process may be independent each other.
(4) The teeth were reproducibly repositioned in a bench-vise, where a profilometer repeatedly measured root surface levels at the same location.
(5) Thus, the action of the bisintercalating drug may be compared to a vise clamping the inner base pairs.
(6) A miniature vise built into a copper stub is described that holds bulk, pre-frozen, hydrated biological specimens during examination under the electron beam of the scanning electron microscope.
(7) The technique using the transfer vise is compared to other existing techniques, and its advantages and limitations are discussed.
(8) A recently developed vise for gluing ceramic cross-section specimens is described, and some examples of the effect of glue thickness on specimen quality are shown.
(9) Neurones which increased their firing rate during phrenic nerve activity tend to respond with decrease discharge to passive chest inflation, and vise versa.
(10) Professor Roger Jones, Professorial Research Fellow in the Victoria Institute of Strategic Economic Studies (VISES) at Victoria University “The perfect storm of stupidity.
(11) It has been established that the main features of the laminar picture of the maxillary sinuses can be determined by two main properties of tomography as a method: the possibility to lead the portions of the sinus osseous walls of greater-length as compared with conventional roentgenography out to the edge-forming zone due to oblique course of the ray beam, and vise versa, disappearance of outlines of these walls in those sections where they are considerably inclined in relation to the roentgen film plane.
(12) Teeth to be split were grooved on their opposing external surfaces and were then cracked open between the file blades upon application of pressure by the vise.
(13) The transfer vise and its technique are recommended for the routine treatment of fixed and removable prosthodontic patients.
(14) In group II (n = 20) the dogs were decapitated by means of a specially designed neck vise.
(15) In addition to its known influence on calcium exchange it gives vise to an analgesic effect within the central nervous system and this follows systemic administration or after bolus intrathecal injection.
(16) The transfer vise, a new instrument that is used for the adjustment of articulators, is described.
(17) The frozen pulps were removed with the help of a screw vise and analysed for ATP, ADP and AMP contents and Ca2+ and Mg2+-ATPases activities.
(18) A modified vise allowing easy handling and safe performing of bone grafts is described.
(19) Vise-grip pliers were used to twist the nail into a cigar-wrapper shape.
(20) Each femur was held in an angle vise that was placed on rollers on a table mounted on the servohydraulic testing machine.