What's the difference between handle and lever?

Handle


Definition:

  • (v. t.) To touch; to feel with the hand; to use or hold with the hand.
  • (v. t.) To manage in using, as a spade or a musket; to wield; often, to manage skillfully.
  • (v. t.) To accustom to the hand; to work upon, or take care of, with the hands.
  • (v. t.) To receive and transfer; to have pass through one's hands; hence, to buy and sell; as, a merchant handles a variety of goods, or a large stock.
  • (v. t.) To deal with; to make a business of.
  • (v. t.) To treat; to use, well or ill.
  • (v. t.) To manage; to control; to practice skill upon.
  • (v. t.) To use or manage in writing or speaking; to treat, as a theme, an argument, or an objection.
  • (v. i.) To use the hands.
  • (n.) That part of vessels, instruments, etc., which is held in the hand when used or moved, as the haft of a sword, the knob of a door, the bail of a kettle, etc.
  • (n.) That of which use is made; the instrument for effecting a purpose; a tool.

Example Sentences:

  • (1) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
  • (2) The most successful dyes were phenocyanin TC, gallein, fluorone black, alizarin cyanin BB and alizarin blue S. Celestin blue B with an iron mordant is quite successful if properly handled to prevent gelling of solutions.
  • (3) "The Samaras government has proved to be dangerous; it cannot continue handling the country's fate."
  • (4) Control of cell calcium handling and transport may be abnormal in hypertension.
  • (5) Equal numbers of handled and unhandled puparia were planted out at different densities (1, 2, 4 or 8 per linear metre) in fifty-one natural puparial sites in four major vegetation types.
  • (6) Arrogant, narcissistic, egotistical, brilliant – all of that I can handle in Paul,” Levinson writes.
  • (7) Isolated renal tubules and renal clearance techniques were used to characterize the renal handling of 2-deoxy-D-galactose (2-d-Gal) by the winter flounder (Pseudopleuronectes americanus).
  • (8) In this study, we examined renal tubular cell handling of digoxin and ouabain using LLC-PK1 cells, a model of proximal renal tubular cells.
  • (9) Just before Christmas the independent Kerslake report severely criticised Birmingham city council for its dysfunctional politics and, in particular, its handling of the so-called Trojan Horse affair, in which school governors were said to have set out to bring about an Islamic agenda into the curriculum contents and the day-to-day running of some schools.
  • (10) The effects of insulin on the renal handling of sodium, potassium, calcium, and phosphate were studied in man while maintaining the blood glucose concentration at the fasting level by negative feedback servocontrol of a variable glucose infusion.
  • (11) The Nd-Yag-Laser seems to be a useful device in transsphenoidal surgery due to its potent coagulation effect and comfortable handling.
  • (12) Techniques are described for the special handling of these cells as well as suitable assay procedures.
  • (13) The decision of the editors to solicit a review for the Medical Progress series of this journal devoted to current concepts of the renal handling of salt and water is sound in that this important topic in kidney physiology has recently been the object of a number of new, exciting and, in some instances, quite unexpected insights into the mechanisms governing sodium excretion.
  • (14) Possible reasons for the previous discrepancies between direct and isotopic methods are discussed, as are the effects of protein binding, sample handling, and storage conditions on oxalate values in plasma.
  • (15) In addition to working with hist colleagues on general review and health-policy matters, he also handled issues related to the special needs of children and helped to get third-party benefit packages altered to better suit the treatment needs of children.
  • (16) Furthermore, this system can be satisfactory handled by technical personnel after short periods of training.
  • (17) The major difficulty encountered with the current technique is the danger of neurologic injury during the passage and handling of conventional wires, especially in extensive procedures.
  • (18) Both techniques are used by industry and regulatory agencies to monitor levels of fungal contamination at various stages of food handling, storing, processing and marketing.
  • (19) The particular advantage of the method described here is the ease with which the supernatants can be collected and transferred to counting vials with minimal handling of radioactive samples.
  • (20) The greatest care should be exercised by industry in handling tremolite or materials contaminated with it.

Lever


Definition:

  • (a.) More agreeable; more pleasing.
  • (adv.) Rather.
  • (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.