What's the difference between exhaust and expend?

Exhaust


Definition:

  • (v. t.) To draw or let out wholly; to drain off completely; as, to exhaust the water of a well; the moisture of the earth is exhausted by evaporation.
  • (v. t.) To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury.
  • (v. t.) To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources.
  • (v. t.) To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject.
  • (v. t.) To subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether.
  • (a.) Drained; exhausted; having expended or lost its energy.
  • (a.) Pertaining to steam, air, gas, etc., that is released from the cylinder of an engine after having preformed its work.
  • (n.) The steam let out of a cylinder after it has done its work there.
  • (n.) The foul air let out of a room through a register or pipe provided for the purpose.

Example Sentences:

  • (1) Peak Expiratory Flow and Forced Expiratory Mean Flows in the ranges 0-25%, 25-50% and 50-75% of Forced Vital Capacity were significantly reduced in animals exposed to gasoline exhaust fumes, whereas the group exposed to ethanol exhaust fumes did not differ from the control group.
  • (2) The use of functional test with the ACTH administration demonstrated organic affection of the CNS to sharply aggravate the weakening and even the exhaustion of the functional reserves of the glomerular and the reticular zones of the adrenal cortex developing during thyrotoxicosis, and also the reserve possibilities of the sympathico-adrenal system.
  • (3) Administration of one of the precursors of noradrenaline l-DOPA not only prevented the decrease in tissue noradrenaline content in myocardium, but restored completely its reserves, exhausted by electrostimulation of the aortic arch.
  • (4) Respiratory muscle endurance at a given level of load was assessed from the time of exhaustion and from the time course of the change in the power spectrum (centroid frequency) of the diaphragm electromyogram (EMG).
  • (5) 9 Women performed plantarflexion and dorsalflexion with maximum strength and at constant load of 60% MVC to exhaustion.
  • (6) The results suggest that, in PMA-stimulated neutrophils, cytosolic activation factors may be consumed or exhausted with an increasing period of time after the stimulation of neutrophils, and that the affinity of PMA-stimulated neutrophil NADPH oxidase to NADPH may almost be the same as that of control neutrophil oxidase.
  • (7) During heavy exercise at 65-75% of VO2 max, time till exhaustion correlates with the pre-exercise muscle glycogen concentration and exhaustion coincides with empty glycogen stores.
  • (8) Glycogen content of the rabbit vastus lateralis muscle was also significantly depleted after exhaustive, intermittent exercise.
  • (9) Currently, entitlement to CTC for families with one to three children is fully exhausted when gross household earnings reach about £26,000 and £40,000 a year respectively.
  • (10) Pseudomonas aeruginosa PAO and 15 other strains of this species synthesized a polyester with 3-hydroxydecanoate as the main constituent (55 to 76 mol%) if the cells were cultivated in the presence of gluconate and if the nitrogen source was exhausted; 3-hydroxyhexanoate, 3-hydroxyoctanoate, and 3-hydroxydodecanoate were minor constituents of the polymer.
  • (11) It is concluded that acute intravenous injections of AVT augment the LH-releasing activity of LRH; chronic treatment for 48 h, however, with LRH + AVT leads to a significant depression of plasma LH perhaps due to an exhaustion of the releasable pool of LH in the anterior pituitary.
  • (12) On exhaustion of NADH, with residual oxygen, decay occurs in two phases to give a form in which haem b and flavin are oxidized.
  • (13) Their lipid metabolism did not seem to be affected at least partially by NO3- exhaustion.
  • (14) She was so exhausted from her trip to London she said she might stay there for 48 hours.
  • (15) Are we moving from a culture where MPs stayed in parliament until booted out, to one where many do five years and move on, frustrated and exhausted?
  • (16) The effect of various fuel additives on the ability of platinum-palladium catalytic converters to remove the carbon monoxide and hydrocarbon components of automotive exhaust has been examined.
  • (17) Regional functional recovery following 2-minute CO was examined under two different conditions in eight dogs: patent coronary artery stenosis and fixed CSS that exhausted coronary reserve but did not cause a deficit in resting coronary flow or regional function.
  • (18) The reduction in the mechanical clearance in adult humans caused by exposure to high concentrations of diesel exhaust was found to be much less than that observed in rats.
  • (19) A timed sprint to exhaustion was performed after 45 min of exercise at 70% of VO2max, and a Wingate anaerobic test was used to measure total work and peak power.
  • (20) Oxygenator exhaust capnographic measurements systematically underestimated PaCO2 measured by a bench blood gas analyzer.

Expend


Definition:

  • (v. t.) To lay out, apply, or employ in any way; to consume by use; to use up or distribute, either in payment or in donations; to spend; as, they expend money for food or in charity; to expend time labor, and thought; to expend hay in feeding cattle, oil in a lamp, water in mechanical operations.
  • (v. i.) To be laid out, used, or consumed.
  • (v. i.) To pay out or disburse money.

Example Sentences:

  • (1) In the present study, respirometric quotients, the ratio of oral air volume expended to total volume expended, were obtained using separate but simultaneous productions of oral and nasal airflow.
  • (2) The increase in membrane resistance at low pH allowed S. bovis to maintain its membrane potential and expend less energy when its ability to ferment glucose was impaired.
  • (3) Approximately 76.5 percent of the funds was expended for treatment services, 12.6 percent for prevention services, and 10.9 percent for other services (for example, administration, research, training).
  • (4) Total hydraulic power expended per unit of forward flow was computed as an index of right ventricular-pulmonary artery coupling.
  • (5) Intuitively, weight lost should be determined by the difference between the total energy consumed and the total energy expended.
  • (6) We conclude that a greater effort should be expended to encourage and even direct patients toward this form of therapy.
  • (7) However, the shadow foreign secretary, Douglas Alexander , is adamant Labour could not afford to spend the first two years of government wrestling with a referendum on Europe, pointing to the energy it had expended on the near-disastrous no campaign for the Scotland independence vote.
  • (8) Both required regions are near the carboxyl terminus, and they are separated by a region which is expendable for binding (K. W. Ryan and A. Portner, 1990, Virology 174, 515-521).
  • (9) The full duplex of tetramer d(G4).d(C4) was prepared by expending about a month.
  • (10) There's no doubt that MacMaster expended an enormous amount of effort compiling the blog and creating Gay Girl's persona: poems, long imaginary reminiscences – even warning readers to treat some other websites "with a very large grain of salt" – but to what purpose?
  • (11) The FSB expends enormous effort on keeping track of its targets.
  • (12) For a club of such means, with fortunes expended already, the focus on Carlos Tevez alone in attack should be troubling.
  • (13) Portions of the carbon of methane expended for synthesis of the biomass, carbon dioxide, and exometabolites was different among methanotrophic cultures belonging to different genera.
  • (14) The percentage of individuals expending 2000 kcal or more per week in LTPA was significantly lower in black men than white men (25 vs. 35%; p = .01) but was not different in black versus white women (18 vs. 17%).
  • (15) "When it became clear that they wouldn't help themselves, Nick wasn't going to expend political capital defending them.
  • (16) This scheme not only maximizes the size of the coated vesicle generated, but also minimizes the number of transformations, thus minimizing the energy expended.
  • (17) It has stoked an existing paranoia that the lives of ordinary Africans are expendable.
  • (18) But on the strength of the effort expended on the right royal cover-up thus far, it seems a fair guess that officials and ministers will have given the prince’s letters rather more favourable attention than routine correspondence with a member of the public.
  • (19) This is probably because the grafted cell clone, reactive to mouse antigens, is small and has to be expended in order to be effective.
  • (20) Effects of levels-of-processing on retention of visually presented target and nontarget letter words were studied in relation to the amount of processing resources expended on the attended task.