What's the difference between ascertain and check?

Ascertain


Definition:

  • (v. t.) To render (a person) certain; to cause to feel certain; to make confident; to assure; to apprise.
  • (v. t.) To make (a thing) certain to the mind; to free from obscurity, doubt, or change; to make sure of; to fix; to determine.
  • (v. t.) To find out or learn for a certainty, by trial, examination, or experiment; to get to know; as, to ascertain the weight of a commodity, or the purity of a metal.

Example Sentences:

  • (1) We have investigated the effect of methimazole (MMI) on cell-mediated immunity and ascertained the mechanisms of immunosuppression produced by the drug.
  • (2) Prior to oral feeding, little or no ELA was detected in stools and endotoxinemia was ascertained in only six of 45 infants (13%).
  • (3) A total of 13 ascertainments of folate sensitive autosomal fragile sites is observed, of which 10q23 fragility appears to be the most frequent.
  • (4) A similar examination of the effects of PD was also carried out in vitro to ascertain whether PD itself or its metabolites are involved in its action.
  • (5) The purity and configuration of each isomer of the free acid and N-chloroacetylated derivative were ascertained by: (a) paper chromatography in five solvent systems, (b) elemental analysis, (c) Van Slyke nitrous acid determination of alpha-carbonyl carbon, and (d) Van Slyke ninhydrin determination of alpha-carbonyl carbon, and (e) optical rotation.
  • (6) In an anthropologic study of illness referral among Latin-American immigrants three phases were ascertained: First, there was extended use of self-treatment.
  • (7) In 20 adult patients with asthma, we evaluated bronchodilation to a single administration of metered-dose glycopyrrolate aerosol (GA) to ascertain its onset and duration of action along with evaluation of safety.
  • (8) 64% of the patients without nodular metastases and 45% of the patients with histologically ascertained nodular metastases and 45% of the patients with histologically ascertained nodular metastases survived the 3-year interval.
  • (9) The results indicated a very good comparability between the dot-blot assay and IF-tests, and this dot-blot method was ascertained as a simple and useful method for the scrub typhus serodiagnosis.
  • (10) Combinations of YM534 with other anti-cancer agents were examined to ascertain whether YM534 potentiated other anti-cancer agents against the KB cell line and its multidrug-resistant counterpart, VJ-300.
  • (11) Three experiments in person perception were conducted to investigate the conditions under which naive observers label an actor as aggressive and to ascertain how this label affects the reactions of the observers to the actor.
  • (12) This study was designed to ascertain the frequency of these problems in our RS patients, whether they were related to other clinical features of RS and what was the extent of the resulting disability.
  • (13) The nutritional requirements for optimal production of biologically active l-asparaginase by a strain of Escherichia coli have been ascertained.
  • (14) Fifty-seven strains of enterotoxigenic Escherichia coli isolated from humans and pigs and producing thermolabile (LT) enterotoxin were used to ascertain the efficiency of the Biken test compared to the passive immune haemolysis test (PIH), considered as very sensitive for detecting that enterotoxin.
  • (15) In the formation of the transformation index the difference between the two groups could be statistically ascertained.
  • (16) This was a highly significant (p less than 0.0001) predictor of 5-year total mortality, whose ascertainment was virtually complete.
  • (17) On the basis of segregating phenotypes, the genetic potentials of these compatible nocardiae were ascertained as follows: the formation of a diploid with subsequent segregation of parental or haploid recombinant genomes or both; persistence of the diploid through many generations; continuing reassortment of genetic information by multiple matings between parental or recombinant organisms; and, very probably, second-round recombinations within the diploid.
  • (18) Based on the ratio of plasma membrane marker enzyme activity determined in the nuclear preparation, the purity of the isolated nuclei was ascertained.
  • (19) The amount of free testosterone in the saliva was also ascertained for 23 of the subjects.
  • (20) In addition, re-analysis of previous investigations of the MAB underscores the importance of ascertaining the reading level of subjects prior to the administration of the MAB.

Check


Definition:

  • (n.) A word of warning denoting that the king is in danger; such a menace of a player's king by an adversary's move as would, if it were any other piece, expose it to immediate capture. A king so menaced is said to be in check, and must be made safe at the next move.
  • (n.) A condition of interrupted or impeded progress; arrest; stop; delay; as, to hold an enemy in check.
  • (n.) Whatever arrests progress, or limits action; an obstacle, guard, restraint, or rebuff.
  • (n.) A mark, certificate, or token, by which, errors may be prevented, or a thing or person may be identified; as, checks placed against items in an account; a check given for baggage; a return check on a railroad.
  • (n.) A written order directing a bank or banker to pay money as therein stated. See Bank check, below.
  • (n.) A woven or painted design in squares resembling the patten of a checkerboard; one of the squares of such a design; also, cloth having such a figure.
  • (n.) The forsaking by a hawk of its proper game to follow other birds.
  • (n.) Small chick or crack.
  • (v. t.) To make a move which puts an adversary's piece, esp. his king, in check; to put in check.
  • (v. t.) To put a sudden restraint upon; to stop temporarily; to hinder; to repress; to curb.
  • (v. t.) To verify, to guard, to make secure, by means of a mark, token, or other check; to distinguish by a check; to put a mark against (an item) after comparing with an original or a counterpart in order to secure accuracy; as, to check an account; to check baggage.
  • (v. t.) To chide, rebuke, or reprove.
  • (v. t.) To slack or ease off, as a brace which is too stiffly extended.
  • (v. t.) To make checks or chinks in; to cause to crack; as, the sun checks timber.
  • (v. i.) To make a stop; to pause; -- with at.
  • (v. i.) To clash or interfere.
  • (v. i.) To act as a curb or restraint.
  • (v. i.) To crack or gape open, as wood in drying; or to crack in small checks, as varnish, paint, etc.
  • (v. i.) To turn, when in pursuit of proper game, and fly after other birds.
  • (a.) Checkered; designed in checks.

Example Sentences:

  • (1) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
  • (2) 119 representatives of this population were checked in their sexual contacts; of these, 13 persons proved to be infected with HIV.
  • (3) In 14 of the patients the imaging results were checked against the histological findings of a subsequent thymectomy, which revealed four thymomas and (with the exception of one normal thymus) hyperplastic changes in all the others.
  • (4) The results indicated that 48% of the sample either regularly checked their own skin or had it checked by another person (such as a spouse), and 17% had been screened by a general practitioner in the preceding 12 months.
  • (5) The government has blamed a clumsily worded press release for the furore, denying there would be random checks of the public.
  • (6) Photosynthetic activity of the cells was checked by placing the cell evenly illuminated in a (14)CO(2) atmosphere.
  • (7) The system of automated diagnosis makes it possible to significantly increase the quality and efficacy of wide-scale prophylactic check-ups of the population.
  • (8) I'll admit to not having realised that more than £100bn would be committed to Trident – I half-remembered reading that it would cost £20bn, so went online, only to discover that the higher figure checks out .
  • (9) After a four-week period on a placebo, hypertensive smokers were treated with slow-release nicardipine 40 mg twice daily for six months and were checked at the end of the placebo period, after the first dose of nicardipine and at the end of six months of therapy.
  • (10) Adverse events and life status were checked at regular intervals.
  • (11) His bracelets and his hair, neatly gathered in a colourful elasticated band, contrast with his unflashy day-to-day uniform of checked shirts, jeans or cheap chinos and trainers.
  • (12) Other details showed the wrong patient undergoing a heart procedure, and the wrong patient given an invasive colonoscopy to check their bowel.
  • (13) Also remember that each time you apply for a loan your credit record is checked, which will leave a footprint of the search.
  • (14) Check out the latest bill from Russia's parliament, the Duma: its aim is to ban the "unnecessary" usage of foreign words (in cases where there is a pre-existing Russian counterpart).
  • (15) Once outside the body they can be purified, expanded in culture, and checked via genome sequencing to ensure the editing has been successful.
  • (16) Indeed, the geographical nature of the division also keeps a check on the club's carbon footprint – Dartford rarely have to travel far outside the M25, with the trips to Bognor Regis and Margate about as distant as they get.
  • (17) No sick or dead monkeys were found in all the forests checked around Entebbe area during the epizootic.
  • (18) I tweet, check Facebook, chat with friends, keep in touch with colleagues, check in using Foursquare, use it to check work emails from home and organise notes using Evernote.
  • (19) At the centre of the Zyed and Bouna deaths is the continuing issue of police controls, stop and searches and identity checks.
  • (20) And all senior management will be required to drive Toyota vehicles and check where the problems lie.