What's the difference between befoul and impede?

Befoul


Definition:

  • (a.) To make foul; to soil.
  • (a.) To entangle or run against so as to impede motion.

Example Sentences:

  • (1) But there’s another set of rationalizations: we would never undertake such risky behavior; we would never live in such a neighborhood, work for such a company, visit such a fallen or disreputable establishment; we would never befoul ourselves with incautiousness as to almost welcome the violence.
  • (2) Variety called it “the ugliest gay-panic humour to befoul a studio release in recent memory” while the Guardian’s Alex Needham wrote “I suspect that in years to come, media studies students will watch this film and be astonished that such a negative portrayal of homosexuality persisted in the mainstream in 2015.” While the balanced treatment of sexuality in Hollywood is still considered be well behind that of both race and gender, recent moves in the industry have been perceived as a slow turning of the tide.
  • (3) The Russian Railways boss, Vladimir Yakunin, a close associate of Putin's and now placed on the US sanctions list, said the west wanted "to befoul everything" to do with Russia and thus criticised the Sochi games; while the influential defence analyst Sergei Karaganov complained about an "avalanche of lies" about Russia over Sochi.
  • (4) And it is the great polluter of the atmosphere , so befouled by our outpourings of greenhouse gases as to threaten the entire global climate system and – without serious and immediate evasive action – condem future generations to live on a hothouse Earth similar to that of 55 million years ago, when temperatures were 10 degrees warmer, and sea levels 80 metres higher.
  • (5) Where some saw an acid comedy of American mores, others detected something altogether more queasy: a befouled gallery of grotesques in which the paedophile comes touted as the most decent and sympathetic exhibit.
  • (6) Almost everywhere, beeping monitors alert visitors to the invisible foe that has befouled entire communities: radiation.

Impede


Definition:

  • (v. t.) To hinder; to stop in progress; to obstruct; as, to impede the advance of troops.

Example Sentences:

  • (1) The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T).
  • (2) Technically speaking, this modality of brief psychotherapy is based on the nonuse of transferential interpretations, on impeding the regression od the patient, on facilitating a cognitice-affective development of his conflicts and thus obtain an internal object mutation which allows the transformation of the "past" into true history, and the "present" into vital perspectives.
  • (3) It was the purpose of this study to examine the relationship between body fluid compartments and multi-frequency bioelectrical impedance analysis (MF-BIA).
  • (4) For the different age categories the best prediction formula for the FFM from body impedance, sex, age and anthropometric variables was calculated.
  • (5) One is the right not to be impeded when they are going to the House of Commons to vote, which may partly explain why the police decided to arrest Green and raid his offices last week on Thursday, when the Commons was not sitting.
  • (6) HFV was delivered at frequencies (f) of 3, 6, and 9 Hz with a ventilator that generated known tidal volumes (VT) independent of respiratory system impedance.
  • (7) ECG and chest impedance were continuously monitored and recorded.
  • (8) Combined clinical observations, stroke volume measured by impedance cardiography, and ejection fractions calculated from systolic time intervals, all showed significant improvement in parallel with CoQ10 administration.
  • (9) The solution of these differential equations gives the velocity of the basilar membrane and hence other related quantities, e.g., displacement, pressure, driving-point impedance at the stapes.
  • (10) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
  • (11) Based on the timing and direction of the changes, the data imply that the traditional band impedance measurement is more closely related to the right heart event than to that of the left heart.
  • (12) Phenobarbital did not retard growth nor impede the response to vitamin D therapy of concomitant rickets.
  • (13) The possible use of impedance measurement with scalp electrodes to detect intracranial events non-invasively was investigated by measuring the localised impedance changes during cortical spreading depression (CSD) in anaesthetised rats.
  • (14) Of these patients, 27 (acute phase) and 36 (chronic phase) were studied for tissue impedance (RT) and interface impedance (Faraday resistance RF and Helmholtz capacity CH).
  • (15) We conclude that Doppler flow velocity waveform analysis is a valuable and non-invasive method to assess impedance to blood flow through the placental circulation in pregnant sheep.
  • (16) The resistive, but not the reactive, component of longitudinal impedance was significantly greater than predicted by the models at all frequencies.
  • (17) Observations were recorded by three distinctly different methods of measurement: the surgeon, the MD-2 Impedance Analyzer, and the Acoustic Otoscope immediately before and after induction of anesthesia.
  • (18) The factors which impeded good recovery were primary brain damage due to preceding diseases such as cerebral infarct or hemorrhage, initial head injury, parkinsonism, and postoperative psychiatric disturbances.
  • (19) No protection from stimulation-associated impedance modifications was provided by the systemic administration of a material of high osmolarity (Mannitol) but the usual impedance decrease was not seen after systemic administration of a glucocorticoid.
  • (20) Twenty preterm infants ventilated for the respiratory distress syndrome were studied on 44 occasions to identify the pattern of interaction between their spontaneous respiratory efforts and the ventilator, using three techniques: (1) an oesophageal balloon and pneumotachograph, (2) impedance respirography and (3) clinical scoring.